JPH04212712A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To record and reproduce frame photographing as well by subjecting a magnetic tape in a stop state to recording with 180 deg. symmerically disposed magnetic heads which have the diameter of a rotary drum and the magnetic tape lead angle of a stationary drum for the recording traces of the same type as the magnetic tape of a standard traveling speed. CONSTITUTION:The recording traces formed in correspondence to the rotating loci Tra, Trb in the predetermined time of 180 deg. symmerically disposed rotary magnetic heads Ha, Hb which rotate at a predetermined rotating speed NS have the length LS and exhibit the angle thetaS formed by the direction where the recording traces extend and the reference edge Te of the magnetic tape T. The angle at the stationary drum provided by making a pair with the rotary drum 5d0 is set as thetaS. A drum structural body of the special construction constituted by determining the diameter D0 of the rotary drum 5d is used together therewith. The recording traces with which the rotating loci Tra, Trb... successively formed on the tape T by the rotary magnetic heads Ha, Hb exhibit the same thetaS, L as the recording traces formed on the tape T traveling at the predetermined traveling speed VS are obtd. in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording and reproducing device.
Ru. [Prior Art] A rotating magnetic head is used to record information on a magnetic tape.
Magnetic recording and reproducing device for recording and reproducing information signals
A typical example is the video tape recorder (VTR).
can be mentioned. And the current VTR was developed.
Since then, dramatic advances have been made in improving image quality and functionality.
It is well known that the
In addition, digital signals are recorded as digital signals.
At present, the development of VTRs is progressing. On the other hand, using a rotating magnetic head on a magnetic tape, information signals can be
A VTR designed to record and playback is a television broadcaster.
Recordings of program content and images captured by television cameras
For continuous image recording, such as signal recording, etc.
Although it was commonly used, magnetic
Focusing on the fact that tape has a large storage capacity,
For example, a VTR can be used as a storage device in a digital information processing device.
There have been no attempts to use it as one of the other components.
It started to be done. By the way, a VTR is a digital information processing device.
For example, as a component in the
``Auxiliary storage device'' and ``Computer graphics image
The images are recorded sequentially at the end of the calculation and played back continuously.
When used as a device for producing moving images by
, the recording of information signals on magnetic tape is a single recording trace.
(1 track) ~ Recording format in units of several tracks
In some cases, VTRs are used to store digital information.
In order to be used as a component of a processing device, the above-mentioned
For example, information in units of one track to several tracks.
The recording operation is also highly stable and reliable.
It is necessary to do so. Rotating magnetic head on magnetic tape
A VTR that uses a card to record and play back information signals.
record to a specific track on the magnetic tape.
or track specific tracks on a magnetic tape.
If you wish to rewrite recorded contents, please
Pre-roll allows magnetic recording to occur at a position before the scheduled recording start position.
The tape is rewound, and when recording, the tape is rewound.
The magnetic tape starts running from this position and the recording is scheduled to start from this position.
is passed at a predetermined tape feed speed, and the recording is scheduled to start.
Enables recording of a predetermined number of tracks from the position.
■Control pulse and capstan motor rotation
Position control ensures that the magnetic field is placed at the position where recording is to be performed.
Stop the tape and insert the rotating magnetic head into the stopped magnetic tape.
Recording is done using a header. There are two methods such as
This has been done for a long time. [0004] Assembly notes for VTR editing functions
The above-mentioned operations performed in recording/insert recording mode
In method (2), each time recording is performed on a magnetic tape, the magnetic
It is necessary to repeatedly unwind and feed the tape in the forward direction.
The mechanism of the tape running system and the magnetic tape
Recording operations are performed frequently because it puts a burden on the printer.
It is not suitable for such cases, and it is also not suitable for moving magnetic tape.
Traps where recording is performed because the running speed of the truck is unstable.
It is difficult to set the position of the
Shorten the recording time interval because it takes time to pre-roll etc.
Problems arise, such as the inability to reduce the size. In addition, the above-mentioned ■
In this method, the volume required for method ① mentioned above is
In addition to not requiring a return operation, the recording operation does not stop the magnetic tape.
The tape running mechanism is
without putting a big burden on the rhythm and magnetic tape.
Furthermore, it is also possible to set the track position with high precision.
This has the advantage of being easy to use, but the recording operation may stop.
A rotating magnetic head is used to
Tracks formed on magnetic tape for recording
The magnetic pattern runs at a predetermined speed.
Records are formed on the tape in accordance with the rotation trajectory of the rotating magnetic head.
The track pattern will be different from the one shown.
Magnetic tape on which information signals are recorded by this method
is played while running at a predetermined speed.
Tracks can be accurately tracked using a rotating magnetic head.
It cannot be traced, and it was also recorded using this ■ method.
A truck running at a predetermined speed
The tracks formed on the magnetic tape using the same magnetic
Do not record and use them in a mixed state on tape.
Have difficulty. [0005] Problems in the prior art mentioned above as ■ and ■
Traditionally, in order to solve a problem, for example, a predetermined
The rotation trajectory of a rotating magnetic head is applied to a magnetic tape running at a linear speed.
It is similar to the record trace of the information signal that is formed in correspondence with the trace.
The recording trace of the information signal is in the tape running direction mentioned above.
A magnetic field that moves a predetermined distance intermittently and then stops.
recorded by the rotation trajectory of the rotating magnetic head relative to the magnetic tape.
The tape on the magnetic tape described above is
Corresponds to the absolute position of the rotating magnetic head based on the reference edge
time based on the position signal of the rotating magnetic head generated by
Controls the rotation trajectory of the rotating magnetic head during missing recording operations
VTRs and magnetic tapes equipped with actuators that
The inclination angle of the recording trace when the machine is stopped and the magnetic tape is running.
The magnetic tape leader is used to match the inclination angle of the recorded trace.
The VTR that was designed to do this by setting the door angle
Proposed. Problems to be Solved by the Invention: However, as mentioned above,
Rotation during intermittent recording using an actuator
A VTR that controls the rotation trajectory of the magnetic head.
is an actuator for controlling the rotation trajectory of the rotating magnetic head.
must be installed in a narrow space inside the rotating drum.
The shape and dimensions of the actuator are small in order to
What is required is something that is configured as a
The small geometry actuator is used for rotating magnetic heads.
A relatively large displacement can be applied, and the actuation
The rotating magnetic head displaced by the tuator causes the displacement
Therefore, the state of head contact with the magnetic tape is poor.
It must be structured so that it does not become
A small actuator with good operating characteristics can be used to
It is difficult to configure a VTR that performs good recording and playback operations.
In addition, as mentioned above, the predetermined running speed
The rotation trajectory of the rotating magnetic head and the
The information signal similar to the record trace of the information signal formed in response to the
The recording trace of the issue is recorded on the magnetic tape in a stopped state by a rotating magnetic head.
The rotating magnetic field is
The rotation trajectory of the air head is changed by an actuator.
When the magnetic tape is running and
The relationship between the rotating magnetic head and the magnetic tape when the tape is stopped.
formed on magnetic tape based on differences in relative linear velocity
This will result in a difference in the length of the recorded trail, so
When performing good recording operations on magnetic tape,
There is a predetermined time axis compression for the signal to be recorded.
Otherwise, it will be necessary to extend the time axis.
(Please note that time axis compression is applied to the signal to be recorded.
The direction of movement of the rotating magnetic head (
direction of rotation) and the direction of movement of the magnetic tape are the same.
, performs time axis expansion on the signal to be recorded.
The direction of movement of the rotating magnetic head (direction of rotation)
) and the direction of movement of the magnetic tape is opposite). Next, a magnetic tape running at a predetermined speed is
Records are formed in correspondence with the rotation locus of the rotating magnetic head.
The record trace of the information signal similar to the record trace of the information signal is stopped.
The rotation trajectory of the rotating magnetic head is applied to the magnetic tape in the state of
The rotational trajectory of the rotating magnetic head so as to form a record.
When changed by an actuator,
, the rotating magnetic head when the magnetic tape is running and when it is stopped.
recording traces based on the difference in relative linear velocity between the magnetic tape and the magnetic tape.
Regarding the problem mentioned above regarding the difference in length between
The specific details are as follows. Figure 3(a) is
A rotating drum 5ds and a pair with the rotating drum 5ds
A fixed drum is provided.
FIG. 3 is a plan view showing a schematic configuration of the vicinity of the ram structure;
, 4 are inclined guides, Ha, Hb are rotating magnetic heads, T is
Magnetic tape, a is rotating magnetic head Ha, Hb (rotating drive
5ds), and b is the moving direction of the magnetic tape.
Ru. A rotating drum 5ds with a diameter Ds is rotated a predetermined number of times.
It is driven to rotate in the direction of arrow a with rotation number Ns, and
In addition, a part of the circumferential surface of the rotating drum 5ds having the diameter Ds described above.
While sliding the magnetic tape T on the
In the state where the vehicle is running at the set running speed Vs,
As illustrated in FIG. 3(b), the magnetic tape T has
Each rotating magnetic field at a predetermined time Ts.
Corresponding to the rotation locus of heads Ha and Hb, each length is
A record trace of length Ls is formed. In FIG. 3(b), T is a magnetic tape;
Arrow a indicates the rotation direction of the rotating magnetic heads Ha and Hb, and arrow b
is the moving direction of the magnetic tape T, surrounded by points c, d, e, and f.
and the quadrilateral shown surrounded by points k, u, m, and n.
are the rotation trajectory of the magnetic head Ha at time Ts, respectively.
A recording trace Tra formed on the magnetic tape T corresponding to the trace
Yes, and the quadrilateral surrounded by points g, h, i, and j is
Corresponding to the rotation locus of the magnetic head Hb during the interval Ts, the magnetic
This is a recording trace Trb formed on the tape T. and,
A rotating drum 5ds with a diameter Ds rotates at a predetermined number of revolutions.
It is driven to rotate in the direction of arrow a by Ns, and
A part of the circumferential surface of the rotating drum 5ds having the diameter Ds described above is magnetized.
In the direction of arrow b, slide the tape T in sliding contact with the
When the car is running at the specified running speed Vs, the front
Each recorded trace Tra, Trb is the recorded trace Tr.
a, the direction in which Trb extends and the reference edge Te of the magnetic tape T
The angle formed by
. Next, the drum shown in FIG.
Using the structure, a rotating drum 5ds with a diameter Ds is predetermined.
Rotate in the direction of arrow a at the set rotational speed Ns, and
A part of the circumferential surface of the rotating drum 5ds having the diameter Ds described above is rubbed.
The running of the magnetic tape T in contact was stopped.
In this case, the rotation trajectory of the rotating magnetic heads Ha, Hb for a time Ts is
The recording marks formed on the magnetic tape T by the marks are, for example,
This will be explained using as an example the case of recording traces caused by the rotating magnetic head Hb.
Then, the quadrilaterals c, d, i, surrounded by the broken line in FIG. 3(b),
Record traces indicated by j; those indicated as Trbo;
However, this record trace Trbo is recorded when the magnetic tape T is
When the magnetic tape T is running at the running speed Vs
Surrounded by points g, h, i, and j in Figure 3(b) formed by
This corresponds to the record trace shown by the quadrilateral.
, the recording trace Tr formed when the magnetic tape T is stopped.
bo has a length Lo and a record trace Trbo.
Angle between the direction of extension and the reference edge Te of the magnetic tape T
indicates the angle θo. In the example of FIG. 3, the rotating magnetic head
The rotation direction (movement direction) a of Ha and Hb and the movement of the magnetic tape
Since the moving direction b is the same, the magnetic tape is formed on the magnetic tape T.
The length of the track recorded by the rotational trajectory of the rotating head over the same period of time
The difference is with respect to Ls of the recording trace when the magnetic tape T is running.
Then, the Lo side of the recording trace when the magnetic tape T stops
is long, that is, Ls<Lo, and the recorded trace is
Angle between the direction of extension and the reference edge Te of the magnetic tape T
is a way to extend the recording trace when the magnetic tape T runs.
The angle θs between the direction and the reference edge Te of the magnetic tape T is
, the direction in which the recording trace extends when the magnetic tape T stops
and the reference edge Te of the magnetic tape T.
, that is, θo<θs. So, magnetic tape T
The inclination angle θo of the recording trace when the magnetic tape T is stopped is
so that it is equal to the inclination angle θs of the recorded trace when traveling.
The rotating magnetic head is changed by an actuator and stopped.
It is possible to perform a recording operation on the magnetic tape T in a stopped state.
it was thought. However, if the inclination angle θo of the recorded trace is
be equal to the inclination angle θs of the recorded trace when the drive T is running.
The rotating magnetic head is changed by an actuator so that
At the same time, a recording operation is performed on the stopped magnetic tape T.
The recording trace formed on the magnetic tape T is shown in FIG. 3(b).
Records indicated by quadrilaterals c, d, i, and j surrounded by broken lines
The trace Trbo is located at the points d, p, h, i, j in (b) of FIG.
, e, g, and d.
be done. Points d, p, h, in FIG. 3(b) mentioned above,
Records as shown by the rectangle surrounded by i, j, e, g, d
The trace is defined by the direction in which it extends and the reference edge Te of the magnetic tape T.
The angle formed by the magnetic tape moving at a predetermined traveling speed Vs
The angle θs of the recording trace formed on the loop T is taken as the same value.
However, the recording trace by the signal of the time length corresponding to the time Ts is
Since the length remains Lo, the magnetic tape T is
The same record as the one recorded when traveling at a speed of Vs.
In order to form a recording on the stopped magnetic tape T,
Compress the time axis of the signal being recorded (rotating magnetic
When the direction of rotation of the magnetic head and the direction of movement of the magnetic tape are opposite,
In some cases, it is necessary to extend the time axis of the signal.
. That is, the above figure is obtained by changing the inclination angle of the rotating drum.
Surrounded by points d, p, i, and j shown in 3(b)
If you create a record trace as shown by the rectangle, the rotating magnetic head will
The angle between the rotation locus of the magnetic tape T and the reference edge Te of the magnetic tape T is
Must match the inclination angle θs of the recording trace when the magnetic tape is running.
However, there is no complete record on the magnetic tape T.
In order to form a video signal that is being recorded,
Do you have to compress (or expand) the time axis of the issue?
However, the time axis compression circuit and control circuit are large and complex.
VTRs with complicated circuit layouts are used for broadcasting and special business purposes.
This results in an expensive device that is only suitable for such uses. [0012] However, as mentioned above, VTR is
For example, "computer" is used as a component in an information processing device.
external auxiliary storage devices for computers” and “computer graph
At the end of the calculation, the images of the
Used for "devices that create moving images by continuously playing back"
functions required when
One recording trace (one track) of the information signal for the
~Recording operation in a recording mode that takes several tracks as a unit
A VTR that can perform this with high stability and reliability.
In this case, a time axis compression device such as the one mentioned above is used.
Same as a cheap VTR such as a home VTR.
If it can be realized using a device of
It has great practical value. Also, recording devices generally
The recorded contents recorded by a recording device can be recorded by that recording device.
There is a function that allows you to play back and check as still images or moving images.
However, it is desirable that the
When a playback operation is performed on a recording device that is
horizontal synchronization signal discontinuity (scanning) in the reproduced video signal.
(cue distortion).
Ru. Means for Solving the Problems The present invention provides a driver with a diameter Ds.
A predetermined running speed while sliding on a part of the circumferential surface of the
For the magnetic tape running at Vs, a predetermined
A predetermined rotational speed of a rotating magnetic head rotating at a rotation speed Ns
The rotation locus at the time Ts
A separately formed record trace with a length Ls is the length of the record trace.
The angle between the length direction and the reference edge of the magnetic tape mentioned above
is formed to indicate the angle θs, then
, with the drum stopped running on a part of the circumferential surface of the drum.
A predetermined number of times is applied to the magnetic tape that is in sliding contact.
A predetermined value of a rotating magnetic head rotating at a rotation number Ns.
Corresponding to the rotation locus of time Ts, the length is Ls, and
, the relationship between the direction in which the recording trace extends and the reference edge of the magnetic tape.
A record trace is formed as the angle indicates the angle θs.
The lead angle of the magnetic tape on the drum is defined as the angle θs
and the drum diameter Do.
In a recording/playback device, intermittently moves by one recording trace interval.
A stopped state on a magnetic tape that is designed to be
Sometimes, they are placed at 180 degree symmetrical positions on the rotating drum.
The first and second rotating magnetic heads have different azimuth angles.
One record at a time by sequentially alternating recording operations of the heads.
means for forming a record;
(0.5+n)H for the position of the rotating magnetic head 2
However, n is a natural number and H corresponds to one horizontal scanning period}
The distance that the rotating magnetic head moves in time
At the same time, the azimuth angle of the adjacent and farthest rotating magnetic head is
Rotating magnetic head for reproduction only with the same azimuth angle
a pair of rotations having the same azimuth angle as described above;
Magnetic tape in a stopped state using magnetic heads sequentially and alternately
A magnet that allows still image playback in field units.
A recording/reproducing device and a part of the circumferential surface of a drum with a diameter Ds.
is traveling at a predetermined traveling speed Vs while touching the vehicle.
Rotates at a predetermined number of rotations Ns against the magnetic tape.
At a predetermined time Ts of the rotating magnetic head
Lengths formed individually corresponding to the rotational loci
The recorded trace of Ls is the same as the direction in which the recorded trace extends.
The angle between the magnetic tape and the reference edge indicates the angle θs.
If the circumferential surface of the drum is formed as
The magnetic tape is in sliding contact with a part of the
The motor is rotating at a predetermined rotation speed Ns with respect to the loop.
The rotation trajectory of the rotating magnetic head for a predetermined time Ts
Correspondingly, the length is Ls and the record trace is extended.
The angle between the direction and the reference edge of the magnetic tape indicates the angle θs.
on the drum so that a record is formed as an object.
Set the lead angle of the magnetic tape to angle θs and
In a magnetic recording/reproducing device in which the diameter Do of the ram is determined
, is intermittently moved by one record interval.
When the magnetic tape is stopped, the rotating drum is
180 degree symmetrical positions with different azimuth angles.
sequentially alternating recording of the first and second rotating magnetic heads
Each movement causes one record to be formed one by one.
and means for the first and second rotating magnetic heads described above.
(0.5+
n) H {where n is a natural number and H is one horizontal scanning period}
separated by the distance that the rotating magnetic head moves in the corresponding time.
At the position where the adjacent rotating magnetic head is
Rotating magnetism for playback with the same azimuth angle as the mass angle
A head is provided, and the above-mentioned rotary magnetic head for reproduction only and
The same azimuth angle near a position approximately 180 degrees symmetrical to that
A pair of rotating magnetic heads consisting of a rotating magnetic head having a
at a predetermined traveling speed Vs by sequentially and alternately using
A magnetic device that plays back from a moving magnetic tape.
air recording and reproducing device, and a part of the circumferential surface of a drum with a diameter Ds.
The vehicle is traveling at a predetermined traveling speed Vs while making sliding contact.
The magnetic tape is rotated at a predetermined number of rotations Ns.
At a predetermined time Ts of the rotating magnetic head
The lengths formed individually corresponding to the rotation trajectories at
The record trace Ls is in the direction in which the record trace extends and the record trace is
The angle formed with the reference edge of the magnetic tape indicates the angle θs.
If the drum is formed as a
A magnet that is in sliding contact with a part of the circumferential surface while the vehicle is stopped.
Rotate at a predetermined number of rotations Ns against the air tape.
Rotation of the rotating magnetic head for a predetermined time Ts
Corresponding to the trajectory, the length is Ls and the length of the recorded trace is
The angle between the direction of the magnetic tape and the reference edge of the magnetic tape is the angle θs.
on the drum so that a record is formed as an indication of the
When the lead angle of the magnetic tape is set to the angle θs,
In a magnetic recording/reproducing device in which the diameter Do of the drum is determined by
and installed at 180 degree symmetrical positions on the rotating drum.
The first and second rotating magnetic heads have different azimuth angles.
at the positions of the head and the first and second rotating magnetic heads described above.
deviated by a predetermined distance in the direction of rotation of the rotating magnetic head.
at the same position and shifted by one recording trace interval in the width direction of the recording trace.
The above-mentioned first and second rotating magnets are placed at 180 degree symmetrical positions.
the third, which has the same azimuth angle as the azimuth angle of the air head;
A fourth rotary magnetic head is provided, and the azimuth angles are different from each other.
a pair of first and fourth rotating magnetic heads having
A pair of second and third rotating magnetic heads are used alternately.
, is moved intermittently by two record trace intervals.
When the magnetic tape is in a stopped state, the pair of rotations described above
Two recordings are made sequentially by the sequentially alternating recording operation of the rotating magnetic head.
means for causing the recording to be formed one by one, and intermittently;
A magnetic tape that is moved by two recording trace intervals.
When the rotary drum is stopped,
by sequentially alternating reproducing operations of a pair of rotating magnetic heads.
Magnetic recording playback that reproduces two sequential recording traces at a time
sliding contact with the device and a part of the peripheral surface of the drum with diameter Ds.
While traveling at a predetermined traveling speed Vs
The tape is rotated at a predetermined number of rotations Ns.
At a predetermined time Ts of the rotating magnetic head
Length Ls formed individually corresponding to the rotation locus
The recorded trace is determined by the direction in which the recorded trace extends and the magnetic field described above.
The angle formed with the reference edge of the air tape indicates the angle θs.
a first drum configured to be formed as a first drum;
While slidingly contacting the structure and a part of the circumferential surface of the drum having a diameter Ds.
Magnetic tape running at a predetermined running speed Vs
, the number of rotations at a predetermined number of rotations Ns.
Rotation trajectory of the rotating magnetic head at a predetermined time Ts
Record of length Ls formed individually corresponding to each trace
The traces are aligned with the direction in which the recorded traces extend and the magnetic tape described above.
Assuming that the angle between the tip and the reference edge indicates the angle θs,
If formed, on a part of the circumferential surface of the drum
For magnetic tape that is in sliding contact with the tape while it is stopped.
A rotating magnet rotating at a predetermined rotation speed Ns
corresponds to the rotation trajectory of the air head for a predetermined time Ts.
, the length is Ls, and the direction in which the recording trace extends and the magnetic
The angle formed with the reference edge of the tape indicates the angle θs.
The magnetic tape on the drum is
Set the lead angle of the drum to the angle θs and
A second drum structure having a defined diameter Do is provided.
In the first drum structure and the second drum structure described above,
Recording and reproducing operation by passing magnetic tape in series
Provides a magnetic recording and reproducing device that enables
do. [Operation] While slidingly contacting a part of the circumferential surface of the drum having a diameter Ds,
Magnetic tape running at a predetermined running speed Vs
, the number of rotations at a predetermined number of rotations Ns.
At each predetermined time Ts of the rotating magnetic head
The length L is formed individually corresponding to the rotation locus.
The recorded trace of s is in the direction in which the recorded trace extends as described above.
The angle formed with the reference edge of the magnetic tape indicates the angle θs.
A part of the circumferential surface of the drum when it is formed as
The magnetic tape is in sliding contact with the magnetic tape while it is stopped running.
On the other hand, a rotation rotating at a predetermined rotation speed Ns
Rotational trajectory of the magnetic head at a predetermined time Ts
The record trace formed corresponding to the length is Ls, and
The direction in which the recording trace extends and the reference edge of the magnetic tape
so that the angle formed represents the angle θs.
Then, let the lead angle of the magnetic tape on the drum be the angle θs.
In addition to setting the drum diameter Do,
A predetermined range of the circumferential surface of the drum in a specially configured drum structure
A predetermined magnetic tape is
One rotating magnetic head is rotating at a given rotation speed Ns.
Therefore, when recording the signal at time Ts, the recorded signal becomes
Therefore, the recording traces formed on the stopped magnetic tape are not directly recorded.
While slidingly contacting a part of the circumferential surface of the drum having a diameter Ds,
For a magnetic tape running at a running speed Vs,
One rotating magnet rotating at a predetermined rotation speed Ns
The signal at time Ts was recorded on the magnetic tape by a magnetic head.
The length Ls of the recorded trace and the length of the recorded trace formed when
The angle θs between the direction of the magnetic tape and the reference edge of the magnetic tape mentioned above.
Exactly the same record trace is formed. [0015] Also, two magnetic heads are sequentially and alternately used.
One frame period consists of two recording traces on a stopped magnetic tape.
Only 2 recording trace intervals after forming the recording trace of the video signal between
After moving, one frame is added to the stopped magnetic tape again.
The operation of recording the video signal during the time period is performed sequentially.
This allows frame-by-frame recording on magnetic tape. that
Then, the magnetic tape on which the sequential recording traces were formed as described above.
(1) The lead angle of the magnetic tape at the drum.
Set the angle θs and set the drum diameter Do.
A predetermined range of the circumferential surface of the drum of a drum structure with a special configuration
The magnetic tape is wound in a stopped state, and the signals of the sequential recording traces are
to a rotating magnetic field rotating at a predetermined rotation speed Ns.
For example, when playing a still image using a magnetic tape
The tape is moved intermittently by one recording trace interval to connect the two magnetic heads.
Still images can be played back in single field units using the
, or move the magnetic tape intermittently at intervals of two recording traces.
TV signals are transmitted using two magnetic heads.
You can play still images frame by frame, or
A magnetic tape on which sequential recording traces are formed as described above.
(2) Do not make sliding contact with a part of the circumferential surface of the drum with diameter Ds.
While driving at a predetermined running speed Vs, sequential recording is made.
The recorded content of the record is rotated at a predetermined number of rotations Ns.
Continuously on the time axis by multiple rotating magnetic heads
You can play it. [0016] Furthermore, a part of the circumferential surface of the drum having a diameter Ds is slidably contacted.
A magnet running at a predetermined running speed Vs while
Rotate at a predetermined number of rotations Ns against the air tape.
At a predetermined time Ts of the rotating magnetic head
each individually corresponding to the rotation locus of the rotating magnetic head.
The formed record trace of length Ls is extended by extending the record trace described above.
The angle between the direction of the magnetic tape and the reference edge of the magnetic tape mentioned above is an angle.
It is configured so that it can be formed as an indicator of the degree θs.
The first drum structure is
against a magnetic tape that is in sliding contact with the
, a rotating magnetic head rotating at a predetermined rotation speed Ns.
Rotation trajectory and correspondence at a predetermined time Ts of the head
, the length is Ls, and the direction in which the recording trace extends and the magnetic
A record showing the angle θs between the tape and the reference edge.
The magnetic tape rolls on the drum so that tracks are formed.
The field angle is set to the angle θs, and the drum
and a second drum structure having a defined diameter Do.
, the above-described first drum structure and second drum structure are provided with a magnet.
The recording and reproducing operation is performed by passing the tape in series.
By making it possible to perform frame-by-frame recording, continuous
You can freely perform various recording operations and various editing operations.
Ru. [Example] The magnetic recording of the present invention will be described below with reference to the accompanying drawings.
The specific contents of the playback device will be explained in detail. Figure 1
The following is a schematic structure of a part of an embodiment of the magnetic recording/reproducing device of the present invention.
FIGS. 2 and 3 are perspective views showing the magnetic recording and reproducing structure of the present invention.
Rotating magnetism to explain the principle of construction and operation of the device
A plan view showing an example of head arrangement and recording pattern, and a rotating drive.
The plan view used to explain the diameter of the ram, and Figures 4 to 7 are for the regeneration operation.
Figures 8 and 9 for explaining the operation are shown in other embodiments.
FIG. 10 is a diagram for explaining the arrangement of the rotating magnetic head.
This is a partial outline of another embodiment of the magnetic recording/reproducing device of the present invention.
A plan view showing the configuration, Figure 11, shows the
Lead angle of magnetic tape on fixed drum
It is a front view of the drum structure used for explanation. Figure 1
1 and 2 are guide poles, 3 and 4 are inclined guides, T
is a magnetic tape, and 5do is a rotating drum with a diameter of Do.
. The rotating drum 5do is paired with a fixed drum 11.
Both constitute a drum structure, and the fixed drum 11 has
The magnetic tape T is set at a predetermined lead angle θ as described below.
In order to wind it around the drum of the drum structure with s.
Conventional guiding means are provided. Figure 2 is shown in Figure 1.
A plan view of the vicinity of the rotating drum 5do {Fig. 2(a)
}, a rotating magnetic head Ha,
Record trace pattern (track pattern) formed by Hb
Fig. 2(b) is a plan view of the
, Te is the reference edge of the magnetic tape, Tra is the magnetic head
Recording traces formed by the magnetic head Trb
This is a record formed by Hb. Now, in the magnetic recording/reproducing apparatus of the present invention, the predetermined
A rotating magnet is applied to a magnetic tape running at a set speed.
The information signal recorded and formed in correspondence with the rotation trajectory of the head.
A record trace of an information signal similar to the record trace is recorded by the tape running described above.
It moves intermittently by a predetermined distance in the row direction and then stops.
Rotation of a rotating magnetic head against a stationary magnetic tape
In order to form records based on trajectories, it is necessary to
Actuates the rotation trajectory of the rotating magnetic head during recording operation.
Applying means such as displacing it with an eta
Magnetic recording has a configuration that allows it to be realized without any problems.
Regarding the playback device, first of all, FIGS. 2 and 3 and
In the magnetic recording/reproducing apparatus of the present invention with reference to FIG. 11 etc.
I would like to explain the components as mentioned above.
Ru. As already mentioned, the drum structure shown in Fig. 3(a)
Using the body, rotate the rotating drum 5ds with a diameter Ds in a predetermined manner.
Rotate it in the direction of arrow a at the rotational speed Ns, and then
A magnetic tape is attached to a part of the circumferential surface of the rotating drum 5ds with a diameter Ds.
Run in a predetermined direction in the direction of arrow b while sliding the
When running at the line speed Vs, the recording type on the magnetic tape T
The record trace created is as illustrated in Figure 3(b).
, each rotating magnet at a predetermined time Ts.
The rotation trajectories of the air heads Ha and Hb and the corresponding individual
are the recording traces Tra, Trb... whose length is Ls.
The above-mentioned recording traces Tra, Trb... are the base of the magnetic tape T.
As the inclination angle of θs with respect to the quasi-edge Te
It is formed. Furthermore, the drum shown in FIG. 3(a)
Using the structure, a rotating drum 5ds with a diameter Ds is predetermined.
Rotate it in the direction of arrow a at the specified rotational speed Ns, and then
In sliding contact with a part of the circumferential surface of the rotating drum 5ds having a diameter Ds,
Assuming that the running of the magnetic tape T is stopped, the rotating
Due to the rotation trajectory of the magnetic heads Ha and Hb during the time Ts, the magnetic
For example, the recording trace formed on the tape T is shown in FIG. 3(b).
The quadrilaterals c, d, i, and j enclosed by broken lines are illustrated as
Like the record trace Trbo, its length is Lo, and
The direction in which the recording trace Trbo extends and the reference edge of the magnetic tape T
Assuming that the angle formed with Te indicates the angle θo
It is formed. Figure 3(c) shows that the magnetic tape T is
While traveling at a predetermined traveling speed Vs,
The length Ls and the inclination angle θs of the recording trace formed on the loop T,
Formed on the magnetic tape T when the magnetic tape T is stopped
It shows the length Lo and the inclination angle θo of the recorded trace,
Symbols such as i, h, and d in the figure are used in Figure 3 (b).
It corresponds to the symbol in the figure, and to in the figure corresponds to
The magnetic tape T runs at a predetermined running speed Vs.
In this state, the sequential records formed on the magnetic tape T
This is the distance corresponding to the interval between the recordings. And before
The lengths of the two types of traces shown in Figure 3(c)
The angles Ls, Lo, and the inclination angles θs, θo of the two types of recording traces.
, track pitch to, the above two types of
The relationship between the lengths of the recording traces Ls and Lo is as follows (1) and (2)
It becomes something expressed by the equation, and we can also change equation (1) to (
By dividing by equation (2), the slope angle θs can be calculated as shown in equation (3).
recorded by using the Pythagorean theorem.
The length Ls of the trace is obtained as in equation (4). ##EQU00001## By the way, in a conventional magnetic recording/reproducing device,
Originally, a rotating magnetic head was attached to the magnetic tape T in a stopped state.
The length Lo and the inclination angle θo to be formed by the rod are
The vehicle travels at a predetermined travel speed Vs on the recorded track it has.
is formed by a rotating magnetic head on a magnetic tape T.
A record similar to a record having a length Ls and an inclination angle θs
Rotating magnetic head as a means to form traces
The actuator displaces the magnetic tape in a stopped state.
The magnetic tape T is placed on the tape T at a predetermined running speed Vs.
The recording marks formed on the magnetic tape T while it is running.
The recording traces showing the same inclination angle θs are configured,
The records that would result if such a method of creating a trail were adopted.
Relative linear velocity between magnetic tape and rotating magnetic head during recording
A large-scale time axis compression (or decompression) circuit
As mentioned above, compensation was provided based on the use of the product.
However, in the magnetic recording/reproducing apparatus of the present invention, the above-mentioned conventional
In today's magnetic recording and reproducing devices, the trace pattern on the magnetic tape is
Make the turns the same regardless of whether the magnetic tape moves or not.
This is completely different from the above-mentioned measures adopted to
The idea is from the standpoint of
The structure of the drum structure used shall be of a special configuration.
The trace pattern on the magnetic tape is determined by
It is said that it can be made the same regardless of whether it is moved or not.
Configuring a magnetic recording and reproducing device based on a completely new idea.
By doing so, the conventional magnetic recording/reproducing device described above
Recording on magnetic tape during a stopped state, such as that used in
At the same time, the rotating magnetic head is displaced by an actuator.
compression of the time axis of the signal being recorded.
There is no need for any means of (or extension), and it is in a stopped state.
At a predetermined running speed Vs for the magnetic tape T of
The recording marks formed on the magnetic tape T while it is running.
Easily create records showing the same inclination angle θs and length Ls
We are making it happen. FIG. 2(a) shows the magnetic tape T in a stopped state.
, a magnetic field running at a predetermined running speed Vs.
The same inclination angle θs and length as the recording trace formed on the tape T
To be able to form a record that shows the
In order to
A rotating drum with a diameter Do of
As a fixed drum paired with 5do, magnetic tape T was used.
It can be introduced into the drum structure with a predetermined lead angle θs as described above.
A special configuration of a driver is used, in which
system structure, that is, used in the magnetic recording and reproducing device of the present invention.
FIG. 3 is a plan view of the vicinity of the drum structure shown in FIG.
) is a specially configured drive shown in Figure 2(a) above.
Magnetism that is wound around a part of the outer circumference of the ram structure and is driven intermittently
Rotates at a predetermined number of rotations Ns when the tape T is stopped.
It is formed by rotating magnetic heads Ha and Hb.
3 is a plan view of a record trace pattern showing the state of the record traces in sequence; FIG.
Ru. And the trace pattern shown in Figure 2(b)
, that is, the drum structure shown in FIG. 2(a).
A magnet that is wound around a part of the outer circumference of the drum and is driven intermittently.
When the tape T is stopped, a predetermined rotation speed Ns
Formed by rotating magnetic heads Ha and Hb rotating at
Each recorded trace Tra, Trb... is a predetermined run.
It is formed on the magnetic tape T running at the line speed Vs.
so as to show the same inclination angle θs and length Ls as the recorded trace.
It is said to be a historical record. [0023] The above point will be explained in detail as follows.
It is. In the magnetic recording/reproducing apparatus of the present invention, a predetermined
A rotary drum with a diameter Ds rotating at a set rotational speed Ns
A predetermined running speed while sliding on a part of the circumferential surface of the
For the magnetic tape running at Vs,
The rotational trajectory of each rotating magnetic head at a predetermined time Ts
Record of length Ls formed individually corresponding to each trace
The traces are aligned with the direction in which the recorded traces extend and the magnetic tape described above.
Assuming that the angle between the tip and the reference edge indicates the angle θs,
If formed, at a predetermined rotation speed Ns
The running is stopped on a part of the circumference of the rotating rotating drum 5do.
With respect to the magnetic tape T that is in sliding contact with the stopped state,
A rotating magnetic head rotating at a predetermined rotation speed Ns.
corresponds to the rotation locus at a predetermined time Ts of the
The recorded trace formed by
The relationship between the direction in which the recorded trace extends and the reference edge of the magnetic tape.
so that the angle θs is formed as representing the angle θs.
, a fixed door provided in a pair with the rotating drum 5do.
The lead angle of the magnetic tape in the ram 11 is expressed as the angle θs (Fig.
11) and the diameter Do of the rotating drum.
Use a drum structure with a special structure that specifies and configures
Therefore, the rotating magnetic heads Ha and Hb rotate the magnetic tape.
The recording traces Tra, Trb... sequentially formed on T are
A magnetic tape running at a predetermined running speed Vs.
The same inclination angle θs and length Ls as the record trace formed on the tape T
A record trail is created to show that
There is. Next, by the magnetic recording/reproducing apparatus of the present invention,
The recorded magnetic tape is recorded in the VHS (registered trademark) system.
For magnetic recording and reproducing equipment (VTR) that operates in standard mode.
Therefore, it is configured so that it can be played continuously.
The specific configuration will be explained by taking a case as an example. Ma
First, it is related to the explanation of the configuration of the magnetic recording and reproducing device in this case.
Among the various standards of the VHS (registered trademark) system that are considered to exist:
The main ones are listed below. Rotating drum diameter Ds...62mm±10μm, rotating drum diameter
Rotation speed Ns: 1800 revolutions per minute, magnetic tape feeding speed
...Magnetic tape T travels at 33.35mm±0.5% per second
The video track angle at the time (the tilt of the recording trace mentioned above)
Oblique angle θs)...5°58'9.9", stop of magnetic tape T
Video track angle at time (tilt of recorded track mentioned above)
Angle θo)...5°56'7.4"0025 Magnet of the present invention
recorded on magnetic tape recorded by a magnetic recording and reproducing device.
Each recorded trace is recorded in VHS (registered trademark) format.
Magnetic recording and reproducing device (VTR) operating in standard mode
Good tracking by the rotating magnetic head in
A recording pattern that can be traced back to a stopped magnetic tape.
Magnetic recording according to an embodiment of the present invention that can be formed in a T-shape
In the playback device, the drum structure of the special configuration described above is used.
The diameter Do of the rotating drum 5do in the body and the rotating head
It is provided on the fixed drum 11 that is paired with 5do.
The lead angle of the introduction part of the magnetic tape T with respect to the drum structure
θs is the standard in the VHS (registered trademark) system described above.
When calculated using the case value, Lo=Ds×π/2=6
2mm×π/2to=33.35/60mm The diameter Do of the rotating drum 5do is 61.648mm, the rotation
It is provided on the fixed drum 11 that is paired with the drum 5do.
The lead-in part of the magnetic tape T for the drum structure
The recorded angle θs is calculated as 5°58'9.9''. That is, as described above,
Each recording trace in the recording pattern is VHS (registered trademark)
A magnetic recording and reproducing device operating in standard mode in
The rotating magnetic head on the machine (VTR) provides excellent tracking.
Create a trail pattern that could be tracked in a stopped state.
An embodiment of the present invention that can be formed on a magnetic tape T
In the magnetic recording and reproducing device, the rotating drum 5do
Then, use one with a diameter Do of 61.648 mm.
, and a fixed drum paired with the rotating drum 5do.
Introducing part of the magnetic tape T to the drum structure provided in 11
Special configuration with lead angle θs of 5°58'9.9"
It uses a drum structure of the same type, and when recording, magnetic
The magnetic tape is transferred intermittently, and when the magnetic tape T stops,
Sequentially onto the magnetic tape T by rotating magnetic heads Ha, Hb
When recording traces Tra, Trb... are formed in
The sequential record traces are recorded when running at a predetermined running speed Vs.
It is the same as the recording trace formed on the magnetic tape T while it is running.
Create a record that shows one inclination angle θs and length Ls.
It will be done. Next, in the case of the above example, the rotating drum diameter Ds is
41mm, which is 2/3 of that, compared to 62mm.
In addition, the rotational speed Ns of the rotating drum in the case of the above example is
In addition to changing 30 revolutions per second to 45 revolutions per second, the above example
Four rotating magnetic heads instead of two rotating magnetic heads in the case of
VHS-C system (registered trademark)
) in the case of carrying out the present invention,
Used in the magnetic recording/reproducing device of the present invention equipped with a ram structure
The diameter Do of the rotating drum in the drum structure is as described above.
In the case of the example, the diameter Do of the rotating drum (=61.648 m
m) and is paired with a rotating drum.
Magnetic tape for the drum structure installed on the fixed drum
The lead angle θs of the introduction part of the loop T is set to 5° as in the previous example.
When using a drum structure configured with 58'9.9"
That's fine. It also has a drum structure with a special configuration.
Recording of information signals is performed using the magnetic recording and reproducing device of the present invention.
The recorded magnetic tape T obtained by
standard) type magnetic recording/reproducing device (VTR), that is,
As a rolling drum 5ds, the diameter Ds is 62mm.
is used, and is paired with a rotating drum 5ds.
The magnetic tape for the drum structure installed on the fixed drum
The lead angle θo of the introduction part of the loop T is 5°56'7.4".
It is equipped with a drum structure having a normal construction mode.
Continuous playback using a magnetic recording and reproducing device (VTR)
For example, the present invention includes a drum structure having a special configuration.
A recorded magnetic field on which information signals are recorded using a magnetic recording/reproducing device.
There is no theory that recorded information can be successfully reproduced from tape T.
It is obvious that there is no need to clarify. By the way, as mentioned above, the rotary drive with diameter Do
The ram 5do is paired with the rotating drum 5do.
A magnetic tape having a lead angle of θs is mounted on a fixed drum 11.
Special configuration consisting of a stationary drum with a T-introduction
Using a similar drum structure, magnetic tape can be used for recording.
Rotating magnets that are transferred intermittently and have different azimuth angles.
When the magnetic tape T is stopped, the magnetic heads Ha and Hb
The recording traces Tra, Trb, etc. formed sequentially on the tape T
The recorded trace pattern is at a predetermined traveling speed Vs.
The recording marks formed on the magnetic tape T while it is running.
From records that show the same inclination angle θs and length Ls
Tape a recorded magnetic tape with a pattern of traces.
The above notes are carried out while the robot is moving at a traveling speed of Vs.
Using a drum structure with a special configuration used during recording,
Reproduction operation was performed by rotating magnetic heads Ha and Hb.
Considering the case, if the driver of the special configuration described above
The system structure performs a preliminary operation on the stopped magnetic tape T.
A magnetic tape T running at a predetermined running speed Vs is rotated.
Information recorded and formed in correspondence with the rotation trajectory of the rotating magnetic head
It has the same length Ls and inclination angle θs as the signal recording trace.
The structure is such that a record trail can be created.
Therefore, it is not possible to use a drum structure with a special configuration as described above.
A magnetic tape that runs at a predetermined running speed Vs.
A record having a length Ls and an inclination angle θs recorded in T.
Recorded from the recording by two rotating magnetic heads Ha and Hb
Even if the signal is reproduced, the two rotating magnetic heads mentioned above
The rotation trajectories of Ha and Hb are recorded on magnetic tape T.
A length different from the recorded trace having a length Ls and an inclination angle θs
Since it indicates the angle of inclination and
Although it is easy to see that a raw signal cannot be obtained,
Two rotating magnetic heads Ha and Hb with different angles are
, the corresponding records of each are traced, albeit incompletely.
Please be sure to check the recorded contents carefully.
I can do it. Next, the above-mentioned configuration example has a rotary drum 5ds.
The diameter Ds is 62 mm and paired with a rotating drum 5ds.
Magnetism for the drum structure installed on the fixed drum
The lead angle θo of the introduction part of the tape T is 5°56'7.4"
A drum with a special configuration that has the configuration specified as
VHS (registered trademark) magnetic recording and reproducing system equipped with a structure
Continuously reproduce normal reproduction signals using video recording equipment (VTR)
Traces identical to the trace pattern that can be obtained
A pattern is formed on a magnetic tape that runs intermittently.
A drum structure with a special configuration that allows
It was related to the magnetic recording and reproducing device it has,
Magnetic devices that operate according to standards other than the VHS (registered trademark) system
A normal playback signal is transmitted by a recording and playback device (VTR).
The same trace pattern that can be obtained continuously
The recorded trace pattern is transferred to a magnetic tape that runs intermittently.
The diameter Do of the rotating drum so that it can be formed
, provided on the fixed drum that is paired with the rotating drum.
The lead angle θ of the introduction part of the magnetic tape with respect to the drum structure
A special configuration mode in which s and s are each set to a predetermined value.
Even if a magnetic recording/reproducing device is constructed using a drum structure,
Good things are natural. Also used in the configuration example above.
Each of the rotating magnetic heads Ha and Hb has a plurality of
A configuration with a magnetic air gap of
Needless to say, it may be done in the same manner as described above.
For example, each rotating magnetic head Ha, Hb is made of N.
(However, N is a natural number greater than or equal to 2) Parallel records are recorded at the same time
If a configuration that allows recording to be formed is used,
In this case, one of the rotating magnetic heads Ha and Hb is used.
Then, N parallel recording traces are placed on the stopped magnetic tape T.
After a group of records are formed simultaneously, each rotating magnetic field
N records recorded by the other heads Ha and Hb.
A group of recorded traces is one of the N parallel recorded traces mentioned above.
A record is formed adjacent to a group of already recorded tracks.
In other words, the magnetic tape T is transported intermittently.
It is. Now, as mentioned above, the special configuration of the driver
Magnetic recording and reproducing device of the present invention configured using a magnetic structure
In the device, two rotating drums are provided on the rotating drum.
If the magnetic heads Ha and Hb have the same azimuth angle,
If there is a
One of the two rotating magnetic heads Ha and Hb
The traces recorded by one of the two are transferred to two rotating magnetic fields.
It is made to be played repeatedly by the heads Ha and Hb.
It goes without saying that good still images can be obtained by
Ru. However, as mentioned above, the drum has a special configuration.
The magnetic recording/reproducing device of the present invention is configured with a structure.
For example, the standard model in the VHS (registered trademark) system.
Rotation of a magnetic recording/reproducing device (VTR) operating on a
that can be tracked well by a magnetic head.
The recording trace pattern is formed on the magnetic tape T in a stopped state.
Special features used as components of the
A drum structure having a configuration mode, the diameter Do is 61.648 m.
The rotary drum 5do of m and the lead of the introduction part of the magnetic tape T.
Fixed door angle θs is set to 5°58'9.9"
The recording movement
During operation, the magnetic tape T is intermittently transferred so that they are aligned with each other.
Due to the rotating magnetic heads Ha and Hb having different angles,
Sequential formation on the magnetic tape T when the magnetic tape T is stopped
The recording trace pattern by the recorded traces Tra, Trb... is V
It is operating in standard mode in HS (registered trademark) system.
In a magnetic recording/reproducing device (VTR), a predetermined
A shaped magnetic tape T is running at a running speed Vs.
Indicates the same inclination angle θs and length Ls as the recorded trace
It is the same as the record trace pattern consisting of record traces, and this
Sequential recording traces T formed on the magnetic tape T in the case of
Adjacent recording traces in ra, Trb... are azimuthal from each other.
Recording is performed by rotating magnetic heads Ha and Hb with different angles.
As shown in Figures 1 and 2,
The azimuth angles of the rotating magnetic heads 5do are different from each other.
The system is stopped by two rotating magnetic heads Ha and Hb.
Repeating a single recording trace recorded on the static magnetic tape T
Even if you trace and obtain a reproduced signal, the reproduced signal
The signal is recorded on the recording trace where the reproduced signal was obtained.
A rotating magnetic head with an azimuth angle (
one of the two rotating magnetic heads Ha, Hb)
Therefore, only the reproduced signal is in good condition.
and record the signal on the recording trace where the above-mentioned reproduced signal was obtained.
Rotating magnetism with azimuth angle not used when turning
head (the other of the two rotating magnetic heads Ha, Hb)
The signal reproduced by
In order to generate a reproduced signal, a driver with the above-mentioned special configuration is used.
The two rotating magnetic heads Ha and Hb in the system structure are
If the azimuth angle is different, the recorded
The entire drum structure used to obtain the new magnetic tape T.
In other words, a rotating drum of diameter Do and a lead angle of θs are shown.
a fixed magnetic drum having an introduction section for magnetic tape T;
Therefore, using the drum structure constructed as described above, the two
The stopped state has been recorded by the rotating magnetic heads Ha and Hb.
By repeatedly reproducing one recording trace on the magnetic tape T of
If the still image playback operation is performed on a field-by-field basis,
It is not possible to play a good still image, but like this
Recorded data created by the recording operation of a magnetic recording/reproducing device
The recorded state of the magnetic tape can be determined by creating the recorded magnetic tape.
Even if it is reproduced using the magnetic recording and reproducing device used for
, it is preferable that the recording status cannot be checked.
isn't it. [0031] The magnetic recording/reproducing apparatus of the present invention is as described above.
The objective is to provide a magnetic recording and reproducing device that does not cause any problems.
A specific example of its configuration is shown in the figures starting from Figure 4.
Ru. In the embodiment shown in FIG. 4, (c) of FIG.
is a plan view of the vicinity of the rotating drum 5do, and (
a) shows different azimuth angles on the stopped magnetic tape T.
formed by rotating magnetic heads Ha and Hb having
It is a plan view of a record trace pattern (track pattern),
The record trace pattern illustrated in Fig. 4(a) has already been
Same as the record trace pattern shown in Figure 2(b) mentioned above.
It is. In Figure 4(a), Te is the standard for magnetic tape.
The edge and Tra are the recording traces formed by the magnetic head Ha.
, Trb is the recording trace formed by the magnetic head Hb.
4(b) is the rotation shown in FIG. 4(c).
Rotating magnetic heads Ha, Hb shown on drum 5do
, Hpa, Hpb on the rotating drum.
In the figure, the arrow a in the figure indicates the rotation direction of the rotating drum, 1
80° is the angle between the rotating magnetic head Ha and the rotating magnetic head Hb.
They are placed in 180 degree symmetrical positions on the rotating drum 5do.
, and do indicates that the rotating magnetic head Ha
and the rotating magnetic head Hpb, and the rotating magnetic head Hpb.
It shows the distance between Hb and the rotating magnetic head Hpa.
The indicated do is the rotating magnetic head H during the 1.5 horizontal scanning period.
a, Hb, Hpa, Hpb, etc. move on the magnetic tape T.
This is the distance. Here, the above-mentioned rotating magnetic head Ha and rotating
Distance do from rotating magnetic head Hpb and rotating magnetic head
As the distance do between Hb and the rotating magnetic head Hpa, 1.
5 During the horizontal scanning period, the rotating magnetic head scans the magnetic tape T.
The reason why the distance traveled is used will be explained. well known
The 2:1 interlaced scanning method is adopted as the scanning standard.
Horizontal scanning period in each one field period when
The interval will be a fraction of 0.5, and for example
For example, in Japan's standard color television system,
One field period is 262.5 horizontal scanning periods (262.5 horizontal scanning periods).
5H). For this purpose, for example, as shown in FIG. 4(c),
Like the installation position of the rotating magnetic heads Ha and Hb,
The same azimuth angle provided at 180 degree symmetrical positions
The two magnetic heads shown in FIG. 4(a)
One record trace Tra is sequentially and alternately traced,
When the video signal of one field period is repeatedly played back continuously.
If there is a discontinuity in the horizontal sync signal between successive fields,
This causes so-called skew distortion in the reproduced image. [0033] Skew distortion due to the above causes does not occur.
Rotating magnetic head used for playback
1/2 horizontal scanning period from a position 180 degrees symmetrical to
The rotating magnetic head moves at the time corresponding to (0.5H).
A rotating magnetic head for playback is placed at a distance of
All you have to do is arrange it and play it. However, the said
At the time corresponding to the 1/2 horizontal scanning period (0.5H)
The distance that the rotating magnetic head moves is the rotation that should be used.
If the magnetic head is too small considering its physical size
A rotating magnetic head for reproduction only is placed at the position mentioned above.
It is impossible to do so. By the way, due to the reasons mentioned above,
In order to prevent the occurrence of skew distortion, the above
180 mm for the rotating magnetic head used for reproduction.
From the symmetrical position, 1/2 horizontal scanning period (0.5H)
Shift by the distance that the rotating magnetic head moves in the corresponding time.
Rotating magnetism used for playback as well as
1.5 horizontal run from a position 180 degrees symmetrical to the head
scanning period (1.5H), 2.5 horizontal scanning period (2.5H)
Generally speaking, (0.5+n)H {however,
n is a natural number, H is one horizontal scanning period}
Within each position shifted by the distance traveled by the rotating magnetic head.
A rotating magnetic head dedicated to playback is placed at one of the positions of the
This can also be achieved by However, the value of n mentioned above
Rotating magnetic head dedicated to playback at large distance positions
is placed, the length of one field period is standard
Because it deviates greatly from the length of one field period of
This will cause deterioration of the reproduced image. [0034] Therefore, it is determined corresponding to the value of n mentioned above.
Rotating magnetic heads Hpa, Hpb for reproduction only in each position
The actual location of the rotating magnetic head Ha
and the rotating magnetic head Hpb, and the rotating magnetic head Hpb.
The distance do between the head Hb and the rotating magnetic head Hpa is 1.
5 During the horizontal scanning period, the rotating magnetic head scans the magnetic tape T.
The distance to be moved is selected (in addition, VHS (registered trademark)
VTRs with the standard configuration of this system have a head dedicated to stop and playback.
Because it is required to play back across recordings,
Must be at 180 degrees to the mating playback head
However, the position must be shifted for the same reason as mentioned above.
Therefore, horizontal running in the relationship of 1H, 2H, etc.
The rotating magnetic head moves over the magnetic tape T during the scanning period.
Rotate during two horizontal scanning periods from positions separated by a distance
separated by the distance that the magnetic head moves on the magnetic tape T.
A dedicated head for stop and playback is installed at the same position.
is common}. Now, (b) and (c) in Figure 4 mentioned above.
The rotating magnetic heads Ha and Hb shown in the figure have a diameter D.
It is installed at a 180 degree symmetrical position on the rotating drum 5do of o.
Magnetic heads with different azimuth angles
These two magnetic heads Ha and Hb are as shown in FIG.
1 for the rotating drum 5do whose diameter is Do shown in (a).
Same as the rotating magnetic head installed at 80° symmetrical position.
During the recording operation, data is sequentially written on the stopped magnetic tape T.
It is used to form records Tra and Trb.
Stop on magnetic tape T that is intermittently transferred during operation
Sometimes, the trace pattern shown in Figure 2 (b) mentioned above is
The same recording trace pattern as that of the two rotating magnets mentioned above
Due to the air heads Ha and Hb, the length is Ls and the inclination angle is θs.
The record traces Tra, Trb... are shown in Figure 4 (a).
A record is formed. Next, the two rotating magnetic heads shown in FIG.
The length is Ls and the inclination angle is θs by the heads Ha and Hb.
The record trace pattern of sequential record traces is shown in Figure 4 (
A magnetic tape T with recording formed as shown in a)
The playback operation of still images in field units is based on the magnetic tape T.
The rotating magnetic head used during recording is in a stopped state.
Ha, Hb and read-only rotating magnetic heads Hpa, Hpb
The reproduction of recorded information from the recording trace Tra is performed by rotating
The magnetic head is the same as Ha→Hpa→Ha→Hpa→...
Two rotating magnetic heads Ha, Hp with the same azimuth angle
This is done by sequentially and alternately using a for reproduction, and then:
After intermittently moving the magnetic tape T by one recording trace interval
With the magnetic tape T in a stopped state, the recording trace Trb is
Recorded information is transferred to the rotating magnetic head Hb→Hpb→Hb→Hpb
→ Two rotating magnetic heads with the same azimuth angle as...
The recording trace Tr is sequentially and alternately used for reproduction of the heads Hb and Hpb.
The reproduction operation of the recorded information from b is performed. That is, Figure 4
In the magnetic recording/reproducing device of the embodiment shown in FIG.
In a drum structure with a special configuration, the diameter is Do.
Provided at 180 degree symmetrical positions on the rotating drum 5do.
Two rotating magnetic heads with different azimuth angles
Using heads Ha and Hb, sequentially move to the stopped magnetic tape T.
Next, the recorded magnetic field on which the recording traces Tra and Trb were formed
Playback of still images in field units from tape T.
In the drum structure with a special configuration used during recording
The same machine provided on the rotating drum 5do with a diameter of Do
A rotating magnetic head Ha having a mass angle and a magnetic head dedicated for reproduction
The head Hpa is used in a pair of rotating magnetic heads for reproduction.
, recording from a recorded magnetic tape T that is in a stopped state.
Records recorded by the rotating magnetic head Ha during recording operation
Replay the recorded trace Tra on the magnetic tape T and feel it.
to obtain a still image of each card, or to obtain an identical image as described above.
A rotating magnetic head Hb having an azimuth angle of
magnetic head Hpb as a pair of rotating magnetic heads for reproduction.
A recorded magnetic tape T that is in a stopped state using
is recorded by the rotating magnetic head Hb during the recording operation.
The recording trace Trb in the recorded magnetic tape T is played back and
I am trying to obtain still images for each field.
Therefore, the playback operation is performed without skew distortion.
It is. A drum structure with a special configuration is used.
In the magnetic recording/reproducing apparatus of the present invention shown in FIG.
, as mentioned above, frame-by-frame recording is performed with the magnetic tape T stopped.
Still image playback is performed from the recorded recording medium in the state in which
If you follow the instructions, you can scan from the recorded magnetic tape T.
Obtain field-by-field still images with no signal distortion.
magnetic recording as shown in Figure 4.
Recorded running at standard speed by playback device
When playing back from a magnetic tape,
Of course, skew distortion occurs in the reproduced image.
Considering the above-mentioned principles of construction and operation, etc.
It is also obvious. Then, confirm that some skew has occurred.
In this case, the magnetic recording and reproducing method shown in Figure 4
Recorded magnet running at standard running speed by device
It is also possible to perform playback operations from a free tape. In that case
Try to minimize the skew distortion that occurs as much as possible.
For example, playback as illustrated in FIG. 5(b)
A rotating magnetic head paired with the rotating magnetic head Hα used in
18 as a head for the above-mentioned rotating magnetic head Hα.
From the 0 degree symmetrical position, (0.5+n)H {where n is
natural number, H is one horizontal scanning period}
How many positions in each position are shifted by the distance that the head moves?
At either position is the axis of the rotating magnetic head Hb used for recording.
Rotating magnetism for playback with the same azimuth angle as the mass angle
The head Haα is arranged, and the above-mentioned pair of rotating magnetic heads
A record of running at standard speed with Hα and Haα.
It would be better if the playback operation was performed from a recorded magnetic tape.
stomach. FIG. 5(a) shows the rotating magnetic heads Hα, Hb, Hpα
FIG. Next, FIG. 6 shows a drum structure with a special configuration.
The magnetic recording/reproducing device of the present invention shown in FIG.
A plurality of rotating magnetic heads Ha, Hb, Hpa,
Hpb arrangement and multiple rotating magnetic heads shown in Figure 5.
In accordance with the arrangement of both heads Hα, Hb, and Haα.
A plurality of rotating magnetic heads Ha, Hb, Hpa, .
By placing Hpb, Hα, and Haα, special
The above-mentioned rotating magnetic field provided in a drum structure having a configuration of
The head removes a file in good condition from the recorded magnetic tape T.
Playback of still images in units of fields, with relatively little skew.
Magnetism that enables video playback with minimal
7 is a diagram showing an example of the configuration of a recording/reproducing device, and is similar to that in FIG. 6.
(a) shows the rotating magnetic head Hα in the rotating drum 5do.
, Hb, and Hpα.
(b) shows the rotating magnetic head Hα in the rotating drum 5do.
, Hb, and Hpα. Next, regarding the embodiment illustrated in FIG.
explain. The embodiment of FIG. 4 described above has different azimuth angles.
The length is L due to the two rotating magnetic heads Ha and Hb.
Sequentially record trace patterns based on record traces with an inclination angle of θs at s
The playback operation from the magnetic tape T recorded on the
Two records each having the same azimuth angle
Rotating magnetic head Ha, Hpa (or Hb, Hpb)
Playback in so-called field units that play back in sequence
In contrast, as shown in Figure 8,
The embodiment shown in FIG. 9 and the embodiment shown in FIG. 9 described below are different.
Two rotating magnetic heads Ha and Hb with azimuth angles
Therefore, a record trace with a length Ls and an inclination angle θs
It is possible to sequentially record and form patterns on the magnetic tape T.
As for what can be done, please refer to the actual implementation described above with reference to Figures 2 and 4.
Same as in the example, but with other recorded magnetic tape.
One record of two consecutive playback operations from the loop T.
Specify that each record trace has a predetermined azimuth angle.
Continuous and repeated playback using a rotating magnetic head.
It is also possible to perform so-called frame playback operations.
frame recording operations can also be performed to
is being done. First, in the embodiment shown in FIG.
, FIG. 8(c) is a plan view of the vicinity of the rotating drum 5do.
, and (a) in FIG. 8 shows that the magnetic tape T in the stopped state is different from each other.
The rotating magnetic heads Ha and Hb have an azimuth angle of
A track pattern is formed in sequence.
FIG. 8(a) is a plan view of the
The recorded trace patterns shown in Figure 2 (b) and Figure 4 (
It is the same as the record trace pattern shown in a) (in addition,
The record trace pattern illustrated in FIG. 9(a) described later
The same goes for turns). In FIG. 8(a), Te is
Reference edges of magnetic tape, Tr1, Tr3... (odd numbered records)
The recording trace) is the recording trace formed by the magnetic head Ha, T
r2 (even numbered recording trace) is formed by the magnetic head Hb.
Figure 8(b) is the record trace of the work done in Figure 8(c).
Rotating magnetism shown on the shown rotating drum 5do
How are the heads Ha, Hb, Hc, Hd connected to the rotating drive?
It is an exploded view showing how it is arranged on the system.
, arrow a in the figure indicates the rotation direction of the rotating drum, 180 in the figure
The display of 0 indicates the rotating magnetic head Ha and the rotating magnetic head Hb.
are placed at 1800 symmetrical positions on the rotating drum 5do.
It shows that Also, β in the figure is the rotating magnetic head.
The distance between the head Ha and the rotating magnetic head Hc, and the distance between the rotating magnetic head Hc and the rotating magnetic head Hc.
The distance between the head Hb and the rotating magnetic head Hd is shown. The above β is the rotating magnetic field during the 1.5 horizontal scanning period.
Heads Ha, Hb, Hc, Hd, etc. move on the magnetic tape T.
This is the distance and the corresponding interval. The above-mentioned rotating magnetic heads Hc and Hd are
1800 symmetry position in rotating drum 5do with diameter Do
The magnetic head is installed at the same position, but one rotating magnetic head
The magnetic head Hc rotates during the 1.5 horizontal scanning period.
is rotated by a distance corresponding to the distance traveled on the magnetic tape T.
The rotating magnetic head Ha is separated from the rotating magnetic head Ha.
To the rotating drum by one recording trace interval to the head Ha.
They are provided with different mounting heights, and
The rotating magnetic head Hd shown below rotates during the 1.5 horizontal scanning period.
Corresponds to the distance that the magnetic head moves on the magnetic tape T
It is separated from the rotating magnetic head Hb by a distance and
, the rotating magnetic head Hb is rotated by one recording trace interval.
They are installed at different mounting heights relative to the ram.
Ru. 1800 pairs in a rotating drum 5do with a diameter of Do
have mutually different azimuth angles provided at nominal positions.
The two rotating magnetic heads Ha and Hb shown in the figure
The diameter shown in Figure 2 (a) and Figure 4 (c) is Do.
Provided at 1800 symmetrical positions on the rotating drum 5do.
Similar to the magnetic head that is used in the
A magnetic tape T that is transported by a distance of one recording trace interval during recording.
One recording trace is sequentially recorded on the magnetic tape T each time the
A so-called frame-by-field record that is formed
Due to the operation, the state shown in FIG. 2(b) and FIG. 4(a)
Trace pattern identical to the trace pattern shown
In other words, the record trace Tr has a length Ls and an inclination angle θs.
1, Tr2... are sequentially transferred to the magnetic tape T as shown in FIG. 8(a).
The record can be formed as shown. [0041] Also, when not recording on the magnetic tape, two
Every time the magnetic tape T is stopped, it is transported by the distance of the recording interval.
Two specific rotating magnets with different azimuth angles
Each of the magnetic heads (e.g. rotating magnetic heads Ha, Hd)
One magnetic head Ha is used to generate one magnetic head.
Recording of recording trace → One recording trace by rotating magnetic head Hd
Recording → Rapid transfer operation for 2 recording trace intervals → Rotating magnetic head
Recording of one recording trace by Hd → Rotating magnetic head Hd
Recording one record trace → rapid transfer for two record trace intervals
Two consecutive recordings are made by recording operations such as operation →...
Record each trace on the magnetic tape T sequentially.
This is achieved by the so-called frame-by-frame recording operation.
This is shown in FIG. 2(b) and FIG. 4(a), which were already mentioned.
A record trace pattern that is identical to a record trace pattern that
That is, record traces Tr1 and Tr2 with length Ls and inclination angle θs
...is sequentially transferred to the magnetic tape T as shown in FIG. 8(a).
A record can be formed. As mentioned above, for example 2
The rotating magnetic heads Ha, Hd are used to tilt the head with a length Ls.
A trace pattern of traces whose oblique angle is θs is
A magnetic tape is recorded as shown in FIG. 8(a).
The frame playback operation from loop T is performed as follows.
It will be done. [0042] With the magnetic tape T in a stopped state, the magnetic tape
Two adjacent records in T (for example, records Tr1,
The recording information from the Tr2) is reproduced by the rotating magnetic head H.
By a and Hd, Ha→Hd→Ha→Hd→...
Two rotating magnetic heads Ha with different azimuth angles
, Hd are sequentially and alternately used for reproduction, and the next
, the magnetic tape T was rapidly moved by two recording trace intervals.
Later, the recorded information is reproduced by the rotating magnetic head Ha→Hd→H.
Two having different azimuth angles as a→Hd→…
The rotating magnetic heads Ha and Hd are used alternately for reproduction.
As a result, the frame playback operation is performed satisfactorily. Said
In the above example, the frame playback operation consists of two rotations.
The case where the magnetic heads Ha and Hd are used is explained.
However, the frame reproduction operation is performed by two rotating magnetic heads Hb and H.
Depending on the
Two rotating magnetic heads Hb and Hc have an azimuth angle of
This is done by sequentially and alternately using the magnetic
After rapidly moving the tape T by two recording trace intervals,
Reproduction of recorded information is performed by rotating magnetic head Hb→Hc→Hb→H
Two rotating magnets with different azimuth angles as c→...
The air heads Hb and Hc are used alternately for regeneration.
may be performed. Next, in the ninth embodiment, the ninth embodiment
(c) is a plan view of the vicinity of the rotating drum 5do;
9(a) shows that magnetic tape T in a stopped state has different edges.
Sequentially by rotating magnetic heads Ha and Hb having mass angles
The flat record pattern (track pattern) formed on
This is a side view of the records exemplified in this No. 9 (a).
The pattern is as shown in Fig. 2 (b) and Fig. 4 (a) as described above.
This is the same as the trace pattern shown in Figure 8(a).
be. In the ninth (a), Te is the reference edge of the magnetic tape.
, Tr1, Tr3... (odd numbered recording traces) are magnetic heads
Record trace formed by Ha, Tr2 (even numbered record)
The recording trace) is the recording trace formed by the magnetic head Hb.
9th (b) is the rotary drive shown in 9th (c).
The rotating magnetic heads Ha, Hb, shown on the ram 5do
How are He and Hf arranged on the rotating drum?
This is a developed diagram showing how the
The direction of rotation of the rotating drum, 1800 in the diagram is rotational magnetism.
The head Ha and the rotating magnetic head Hb are mounted on a rotating drum 5do.
The above shows that it is placed at a 1800 symmetrical position.
There is. In addition, α in the figure is between the rotating magnetic head Ha and the rotating magnetic head.
In addition, β in the figure is the distance from the above-mentioned circuit.
From a position 1800 degrees symmetrical to the rotating magnetic head He,
It shows the distance to the head Hf. And the above β is
1.5 Rotating magnetic heads Ha, Hb, H during the horizontal scanning period
It corresponds to the distance that e, Hf, etc. move on the magnetic tape T.
It is the interval. The rotating magnetic head Hf described above has a diameter of D.
o in the rotating drum 5do, another rotating magnetic head H
For a, Hb, and He, one record interval is applied to the rotating drum.
The mounting heights are different from each other. 1 in the rotating drum 5do with a diameter of Do
Different azimuths provided at 800 symmetrical positions
Two rotating magnetic heads Ha and Hb having corners are shown in the figure.
2(a) and each of FIGS. 4 and 8(c).
1800 symmetry position in rotating drum 5do with diameter Do
Similar to the magnetic head installed in the
When the magnetic field is not recorded, the magnetic field is transported by a distance of one recording trace interval.
Each time the magnetic tape T stops, one recording trace is left on the magnetic tape T.
Records are formed sequentially, in so-called field units.
Due to the frame recording operation, the previously described FIG. 2(b) and FIG.
The trace pattern as shown in (a) of Figure 8 and Figure 8.
The same trace pattern as , that is, the length is Ls and the slope is
Record traces Tr1, Tr2... whose angle is θs are sequentially transferred to the magnetic tape T.
Next, form a record as shown in section 9 (a).
I can do it. Also, 2 recordings can be made when not recording on magnetic tape.
Each time the magnetic tape T stops being transferred by the distance of the trace interval.
, two specific rotating magnets with different azimuth angles
Each one of the heads (for example, rotating magnetic heads He, Hf)
One recording using a rotating magnetic head He.
Recording of a record → one record by a rotating magnetic head Hf
Recording → Rapid transfer operation for 2 recording trace intervals → Rotating magnetic head
Recording of one recording trace by He → to rotating magnetic head Hf
Recording of one record trace → Rapid transport movement corresponding to the interval of two record traces
Two consecutive recording traces are created by recording operations such as creation →...
One recording trace of each is sequentially formed on the magnetic tape T.
This is achieved through the so-called frame-by-frame recording operation.
In (b) of FIG. 2 and (a) of FIG. 4 and FIG.
Trace pattern identical to the trace pattern shown
In other words, the record trace Tr1 has a length Ls and an inclination angle θs.
, Tr2... are sequentially transferred to the magnetic tape T as shown in Part 9 (a).
The record can be formed as shown below. As mentioned above, for example, two rotating magnetic heads
By He and Hf, the length is Ls and the inclination angle is θs.
The record trace pattern by the eel record trace is shown in Part 9 (a).
A frame from a magnetic tape T recorded as shown in
The program playback operation is performed as follows. magnetic tape T
is in a stopped state, and two adjacent records on the magnetic tape T are recorded.
Recorded information from traces (for example, recorded traces Tr1, Tr2)
is reproduced by rotating magnetic heads He and Hf.
They have different azimuth angles like Hf→He→Hf→...
The two rotating magnetic heads He and Hf are sequentially and alternately used for reproduction.
This is done by using the magnetic tape T.
After moving 2 recording trace intervals, playback of the recorded information is restarted.
The rotating magnetic head is different as He → Hf → He → Hf →...
Two rotating magnetic heads He, Hf have an azimuth angle of
By sequentially and alternately using the
The work is done well. [0046] The explanation so far is based on a predetermined number of revolutions.
Part of the circumferential surface of a rotating drum with diameter Ds rotating at Ns
The vehicle travels at a predetermined travel speed Vs while sliding in contact with
A predetermined period of time for each magnetic tape
Corresponding to the rotation locus of each rotating magnetic head at Ts,
A record trace of length Ls formed individually for each of the above-mentioned records
The direction in which the recording trace extends and the reference edge of the magnetic tape mentioned above
Suppose that the angle formed represents the angle θs.
If the
It slides into contact with a part of the circumferential surface of the rotating drum while it is stopped.
The rotating magnetic head is placed in a predetermined position on the magnetic tape.
is formed corresponding to the rotation locus at the specified time Ts.
The record trace whose length is Ls and the record trace mentioned above is
The angle between the extending direction of the magnetic tape and the reference edge of the magnetic tape is an angle.
The rotating driver is formed as a
The magnetism in the fixed drum paired with the drum
Set the lead angle of the tape to angle θs and rotate
Recording in a magnetic recording/reproducing device that determines the drum diameter Do
The recording state of the recorded magnetic tape created by the operation
, the magnetic recording used to make the recorded magnetic tape.
Various means for playback using a recording/playback device
However, Fig. 10 shows the predetermined times.
The circumferential surface of a rotating drum of diameter Ds that is rotating at the number of revolutions Ns.
Travels at a predetermined traveling speed Vs while sliding on some parts
Each predetermined
Corresponding to the rotation locus of each rotating magnetic head at time Ts
The recorded traces of length Ls formed individually by the above-mentioned
The direction in which the recorded trace extends and the reference edge of the magnetic tape mentioned above.
Let us form the angle θs as the angle between
a first drum structure configured to
One of the circumferential surfaces of the rotating drum rotating at the rotation speed Ns
Magnetic tape that is in sliding contact with the part while it is stopped running
, at a predetermined time Ts of the rotating magnetic head.
The trace formed in correspondence with the rotation locus of the
The length is Ls, and the direction in which the recording trace extends and the magnetic
The angle formed with the reference edge of the air tape indicates the angle θs.
It is provided in a pair with the rotating drum so that it is formed as a
The lead angle of the magnetic tape on the fixed drum is
The angle θs is set and the diameter of the rotating drum
If a second drum structure is provided, the Do is determined.
Also, the first drum structure and the second drum structure described above.
The recording and reproducing operation is performed by passing the magnetic tape in series.
a magnetic recording and reproducing device configured to allow the recording of
That is, as mentioned above, the first,
Magnetic recording and reproducing configured using a second drum structure
The device is shown. In FIG. 10, 6 is a tension arm;
7 is the full width erase head, 8 is the control head, and 9 is the key.
10 is a pinch roller, and T is a magnetic tape.
5do is a rotating drum with a diameter of Do, 5ds
is a rotating drum of diameter Ds. The magnetic tape mentioned above
T is tension arm 6 → full width erasing head 7 → tilt guide
The structure includes a rotary drum 5do whose diameter is Do.
A part of the outer periphery of the second drum structure → inclined guide
Door 4a → Inclined guide 3b → Rotating drum with a diameter of Ds
The outer periphery of the first drum structure including 5ds
part → inclined guide 4b → control head 8 → cap
You can drive along the route of Pushtan 9 and Pinch Roller 10.
It is being done. Rotating drum 5ds with diameter Ds
has a special configuration as described in detail with reference to Figure 3.
The rotating drum in the drum structure (first drum structure)
The rotating drum 5do has a diameter of
, Fig. 1, Fig. 2, Fig. 6, Fig. 8, Fig. 9, etc., for details.
A drum structure with a special configuration as described above (second drum structure)
This is the rotating drum in the ram structure. The first mentioned above
The drum structure is paired with a rotating drum 5ds with a diameter of Ds.
A magnetic tape T is placed on a fixed drum at a predetermined lead angle θo.
Magnetism for winding around the drum of the drum structure
A tape introduction section is provided, and the above-mentioned second
The drum structure is paired with a rotating drum 5do having a diameter of Do.
A magnetic tape T is placed on a fixed drum 11 at a predetermined lead angle θ.
In order to wind it around the drum of the drum structure with s.
A magnetic tape introduction section is provided. In the magnetic recording/reproducing apparatus shown in FIG.
, by using its first drum structure.
A rotary drum with a diameter Ds rotating at a set rotational speed Ns
A predetermined running speed while sliding on a part of the circumferential surface of the
For the magnetic tape running at Vs,
Rotation trajectory of the rotating magnetic head at a predetermined time Ts
correspondingly, each has a length Ls individually, and the front
The direction in which the recorded trace extends and the standards for the magnetic tape mentioned above.
A record trace such that the angle formed with the edge Te shows the angle θs
It can be formed sequentially, and the second driver of it
By using the system structure, a predetermined rotation speed Ns can be achieved.
When a part of the circumferential surface of a rotating drum is stopped,
Rotating against the magnetic tape T that is in sliding contact with the
Rotational trajectory of the magnetic head at a predetermined time Ts
correspondingly, its length is Ls, and the record trace is
The angle between the direction of extension of the magnetic tape and the reference edge Te of the magnetic tape
It is possible to form a record that shows the angle θs.
Wear. Therefore, in the magnetic recording/reproducing apparatus shown in FIG.
is within the frame recording recorded by the second drum structure.
the content is continuously reproduced by the first drum structure,
Or record recorded frame by frame by the second drum structure.
Recorded content can be played back as still images using the second drum structure.
In addition, frame shots were recorded by the first drum structure.
The recorded content can be played back as a still image using the first drum structure.
, the recorded contents continuously recorded by the first drum structure.
The first drum structure allows continuous playback, and other
1. Change the usage mode of the second drum structure appropriately on the time axis.
If you perform recording/playback operations or edit/record without changing the
It can be operated in various operating modes, such as by In the magnetic recording/reproducing apparatus shown in FIG. 10, the drive of the magnetic tape T is
This is done by a pair of capstans 9 and a pinch roller 10.
Although it is structured so that it can be carried out, it is difficult to implement it.
Individually for each drum structure in two drum structures.
A separate capstan and pinch roller may be provided.
Also, the first drum structure and the second drum structure may be
The tension arm or
A tape reservoir may also be provided. Furthermore, the first
The rotating drum of the drum structure and the rotating drum of the second drum structure
It is desirable to rotate the
This is a new implementation mode. Furthermore, the first drum structure
and the second drum structure are opposite to the state shown in FIG.
Of course, it may also be implemented as follows. In addition, the first
The recording and reproducing operation by the second drum and the second drum is simultaneous.
If this is not done, one signal system is used for the first and second signals.
It may be made to be used interchangeably for drums of
stomach. [0050] In each of the embodiments described so far,
The drum structure used in magnetic recording and reproducing devices rotates.
A rotating circuit configured to rotate integrally with the magnetic head.
a rotating drum; and a stationary drum paired with the rotating drum.
However, the magnetic recording of the present invention
When implementing a recording/playback device, two parts of the drum are
Also configured as a fixed drum and a rotating magnetic head
The rotating magnetic head structure is driven at a predetermined rotation speed.
A drum structure configured to be dynamically rotated is used.
Of course, this is a good thing. [0051] Effect of the invention: It is clear from the detailed explanation above.
As such, the magnetic recording/reproducing device of the present invention has a driver with a diameter Ds.
A predetermined running speed while sliding on a part of the circumferential surface of the
A predetermined value is set for the magnetic tape running at Vs.
Each of the rotating magnetic heads rotates at a rotation speed Ns.
Corresponding to the rotation locus at a predetermined time Ts,
A record trace of length Ls formed individually for each of the above-mentioned records
The direction in which the recording trace extends and the reference edge of the magnetic tape mentioned above
If the angle formed is formed as representing the angle θs, then
When a part of the circumferential surface of the drum stops running,
The magnetic tape is in sliding contact with the magnetic tape in a predetermined manner.
A predetermined rotational speed of a rotating magnetic head rotating at a rotation speed Ns
is formed corresponding to the rotation locus at the time Ts
The length of the recorded trace is Ls, and the length of the recorded trace is
The angle between the direction of the magnetic tape and the reference edge of the magnetic tape is the angle θs.
magnetic field in the drum to be formed as an indication of
Set the lead angle of the air tape to the angle θs, and
The drum structure has a special configuration that determines the diameter Do of the ram.
The stop shape is wound around a predetermined area on the circumferential surface of the drum.
The magnetic tape is rotated at a predetermined number of rotations Ns.
A signal at time Ts is recorded by one rotating magnetic head.
When recording, the magnetic tape in the stopped state is activated by the recording signal.
The record mark formed on the drum is one part of the circumferential surface of the drum having a diameter Ds.
The vehicle travels at a predetermined travel speed Vs while sliding in contact with the
A predetermined number of rotations Ns is applied to the magnetic tape.
One rotating magnetic head rotating at a time Ts
The traces formed when signals are recorded on magnetic tape.
The length Ls and the direction in which the recording trace extends and the magnetic tape described above.
If there is a record trace where the angle θs with the reference edge of the tap is exactly the same,
As described above, a sequential record trace is formed.
(1) Place the magnetic tape on the drum.
Set the lead angle of the drum to the angle θs, and
Circumference of the drum of a specially configured drum structure with a diameter Do
Wrap the stopped magnetic tape over a predetermined area of the surface and sequentially
The signal of the recorded trace is rotated at a predetermined number of rotations Ns.
For example, it can be played back as a still image using a rotating magnetic head.
The magnetic tape is moved intermittently one record at a time so that
or in sequence as described above.
(2) Diameter D
While slidingly contacting a part of the circumferential surface of the drum of s,
The contents of the recorded traces are recorded sequentially while traveling at the traveling speed Vs.
A plurality of rotating magnets rotating at a predetermined rotation speed Ns
Continuous playback on the time axis using the air head.
It is also possible to make sliding contact with a part of the circumferential surface of the drum having a diameter Ds.
While traveling at a predetermined traveling speed Vs
The tape is rotated at a predetermined number of rotations Ns.
At a predetermined time Ts of the rotating magnetic head
Each shape is individually shaped to correspond to the rotation locus of the rotating magnetic head.
Extend the recorded trace of length Ls created by the above recorded trace.
The angle between the direction and the reference edge of the magnetic tape mentioned above is the angle.
θs
The first drum structure and a portion of the circumferential surface of the drum are
When the magnetic tape is in sliding contact with the stopped state,
A rotating magnetic head rotating at a predetermined rotation speed Ns.
corresponds to the rotation locus at a predetermined time Ts of the
, the length is Ls, and the direction in which the recording trace extends and the magnetic
A record showing the angle θs formed with the reference edge of the tape
The magnetic tape leads in the drum so that
The drum angle is set to the angle θs, and the drum is
a second drum structure having a defined diameter Do;
The first drum structure and the second drum structure described above are magnetically attached.
Recording and playback operations are performed by passing the tape serially.
By making it possible to record frames, continuous
You can freely perform various recordings and various editing operations.
Therefore, according to the present invention, all the problems mentioned above are solved.
can be solved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a schematic configuration of a part of an embodiment of a magnetic recording/reproducing apparatus of the present invention.

FIG. 2 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern for explaining the configuration principle and operating principle of the magnetic recording/reproducing device of the present invention, and a plan view used for explaining the diameter of a rotating drum. .

FIG. 3 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern for explaining the configuration principle and operating principle of the magnetic recording/reproducing device of the present invention, and a plan view used for explaining the diameter of the rotating drum. .

FIG. 4 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern of the magnetic recording/reproducing apparatus of the present invention, and a plan view used to explain the diameter of a rotating drum.

FIG. 5 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern of the magnetic recording/reproducing apparatus of the present invention, and a plan view used to explain the diameter of a rotating drum.

FIG. 6 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern of the magnetic recording/reproducing apparatus of the present invention, and a plan view used to explain the rotating drum.

FIG. 7 is a plan view used to explain the reproducing operation of the magnetic recording and reproducing apparatus of the present invention.

FIG. 8 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern in another embodiment of the present invention, and a plan view used to explain the rotating drum.

FIG. 9 is a plan view showing an example of the arrangement of a rotating magnetic head and a recording trace pattern in another embodiment of the present invention, and a plan view used to explain the rotating drum.

FIG. 10 is a plan view showing a schematic configuration of another embodiment of the present invention.

FIG. 11 is a front view of a drum structure used to explain the lead angle of a magnetic tape in a fixed drum provided as a pair with a rotating drum.

[Explanation of symbols]

Claims (4)

[Claims] Claim 1: A magnetic tape that is rotating at a predetermined number of rotations Ns with respect to a magnetic tape that is running at a predetermined running speed Vs while slidingly contacting a part of the circumferential surface of a drum having a diameter Ds. Lengths L each formed individually corresponding to the rotation locus of the magnetic head at a predetermined time Ts
If the recorded trace s is formed such that the angle between the extending direction of the recorded trace and the reference edge of the magnetic tape represents an angle θs, then a part of the circumferential surface of the drum The magnetic tape is in sliding contact with the magnetic tape in a state where the running is stopped. The lead angle of the magnetic tape on the drum is set to the angle θs so that the recording trace is formed with the length Ls and the angle between the direction in which the recording trace extends and the reference edge of the magnetic tape indicates the angle θs. In a magnetic recording/reproducing device in which the diameter Do of the drum is determined, when the magnetic tape is in a stopped state and the magnetic tape is moved intermittently by one recording track interval, the magnetic tape is provided at 180 degree symmetrical positions on the rotating drum. means for sequentially forming recording marks one by one by sequentially alternating recording operations of first and second rotating magnetic heads having different azimuth angles, and the first and second rotating magnetic heads described above; At a position that is separated by the distance that the rotating magnetic head moves at a time corresponding to (0.5+n)H {where n is a natural number and H is one horizontal scanning period} with respect to the position of the magnetic head, the adjacent far side is A read-only rotating magnetic head having the same azimuth angle as that of the rotating magnetic head described above is provided, and a pair of rotating magnetic heads having the same azimuth angle as described above are sequentially and alternately used to read from a stopped magnetic tape. A magnetic recording and reproducing device that reproduces still images on a field-by-field basis. [Claim 2] A magnetic tape that is rotating at a predetermined number of revolutions Ns with respect to a magnetic tape that is running at a predetermined running speed Vs while slidingly contacting a part of the circumferential surface of a drum having a diameter Ds. Lengths L each formed individually corresponding to the rotation locus of the magnetic head at a predetermined time Ts
If the recorded trace s is formed such that the angle between the extending direction of the recorded trace and the reference edge of the magnetic tape is an angle θs, then a part of the circumferential surface of the drum The magnetic tape is brought into sliding contact with the magnetic tape in a state where the running is stopped. The lead angle of the magnetic tape on the drum is set to the angle θs so that the recording trace is formed with the length Ls and the angle between the direction in which the recording trace extends and the reference edge of the magnetic tape indicates the angle θs. In a magnetic recording/reproducing device in which the diameter Do of the drum is determined, when the magnetic tape is in a stopped state and is moved intermittently by one recording track interval, the magnetic tape is provided at 180 degree symmetrical positions on the rotating drum. means for sequentially forming recording marks one by one by sequentially alternating recording operations of first and second rotating magnetic heads having different azimuth angles, and the first and second rotations described above; (0.5+n) for the position of at least one of the magnetic heads
H {where n is a natural number and H is one horizontal scanning period} At a position that is separated by the distance that the rotating magnetic head moves in the time corresponding to A pair of rotating magnetic heads consisting of the aforementioned rotating magnetic head for reading only and a rotating magnetic head having the same azimuth angle near a position approximately 180 degrees symmetrical thereto are sequentially alternated. A magnetic recording and reproducing apparatus is used for reproducing data from a magnetic tape running at a predetermined running speed Vs. 3. Rotating at a predetermined number of revolutions Ns with respect to a magnetic tape running at a predetermined running speed Vs while slidingly contacting a part of the circumferential surface of a drum having a diameter Ds. Lengths L each formed individually corresponding to the rotation locus of the magnetic head at a predetermined time Ts
If the recorded trace s is formed such that the angle between the extending direction of the recorded trace and the reference edge of the magnetic tape represents an angle θs, then a part of the circumferential surface of the drum The magnetic tape is in sliding contact with the magnetic tape in a state where the running is stopped. The lead angle of the magnetic tape on the drum is set to the angle θs so that the recording trace is formed with the length Ls and the angle between the direction in which the recording trace extends and the reference edge of the magnetic tape indicates the angle θs. In a magnetic recording and reproducing device in which the diameter Do of the drum is determined, first and second rotating magnetic heads are provided at 180-degree symmetrical positions on the rotating drum and have different azimuth angles;
180 at a position shifted by a predetermined distance in the rotation direction of the rotary magnetic head with respect to the positions of the first and second rotary magnetic heads described above, and shifted by one recording trace interval in the width direction of the recording trace.
Third and fourth rotary magnetic heads having the same azimuth angle as the first and second rotary magnetic heads are provided at symmetrical positions, and a pair of first and fourth rotary magnetic heads having different azimuth angles are provided. , a fourth rotary magnetic head, or a pair of second and third rotary magnetic heads are sequentially and alternately used, and the magnetic tape is intermittently moved by two recording trace intervals when the magnetic tape is in a stopped state. means for sequentially forming two recording traces by sequentially alternating recording operations of a pair of rotating magnetic heads, and a stopped state in a magnetic tape that is intermittently moved by two recording trace intervals; Sometimes, by the sequentially alternating reproducing operation of the above-mentioned pair of rotating magnetic heads on the rotating drum, two
A magnetic recording and reproducing device that reproduces recorded traces one by one. 4. A magnetic tape that is rotating at a predetermined number of rotations Ns with respect to a magnetic tape that is running at a predetermined running speed Vs while slidingly contacting a part of the circumferential surface of a drum having a diameter Ds. Lengths L each formed individually corresponding to the rotation locus of the magnetic head at a predetermined time Ts
a first drum structure configured to form a recording trace of s such that the angle between the extending direction of the recording trace and the reference edge of the magnetic tape represents an angle θs; A rotating magnetic head rotating at a predetermined number of rotations Ns with respect to a magnetic tape running at a predetermined running speed Vs while slidingly contacting a part of the circumferential surface of the drum Ds. Recording traces each having a length Ls formed individually corresponding to the rotation trajectory at time Ts, and the angle between the extending direction of the recording trace and the reference edge of the magnetic tape representing an angle θs. When the magnetic tape is in sliding contact with a part of the circumferential surface of the drum in a stopped state, the rotation is rotating at a predetermined number of rotations Ns. A recording trace is defined as a track whose length is Ls and which corresponds to the rotation locus of the magnetic head for a predetermined time Ts, and where the angle between the extending direction of the recording trace and the reference edge of the magnetic tape is an angle θs. The lead angle of the magnetic tape on the drum is set to the angle θs, and the drum diameter D
and a second drum structure having a predetermined o.
A magnetic recording and reproducing apparatus is configured such that a magnetic tape is passed through the first drum structure and the second drum structure in series to perform a recording and reproducing operation.