JPH0363985A - Tape travel control mechanism for video cassette tape - Google Patents

Abstract

PURPOSE:To easily and speedily execute the program search of a video cassette tape and to reduce power to be used as well by providing a liquid crystal shutter, which can open and close an optical path, in an optical fiber, detecting a marker, which is provided in a magnetic tape, by a sensor for marker detection and stopping the travel of a driving motor. CONSTITUTION:The marker 23 is provided in the desired position of the magnetic tape 10 and on the other hand, the sensor 24 for marker detection is provided in the cassette case of the cassette tape 18. Then, in a part where light can be emitted to a light reception part 16 of an optical sensor 19 for driving motor control, cassette tape side light emission parts 35 and 36 are provided to be interlocked with the sensor 24 for marker detection. Accordingly, the program search can be executed to the recorded contents of the cassette tape 18 without applying any changes to a mechanism on a video cassette deck 15 side. By using the optical fiber 56 and liquid crystal shutter 93, a cassette tape side light emission part 29 is constituted by utilizing the light of a light emission part 17 provided in the cassette deck 15. Thus, the power to be used can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape running control mechanism for a video cassette tape, and in particular to a video cassette that can easily locate the beginning of the content recorded on a magnetic tape. The present invention relates to a tape running control mechanism for a tape.

[Prior Art] To explain the so-called cueing of a video cassette tape, in which playback is performed from a desired position on a video cassette tape, in the past, a counter provided in a video cassette deck was used to match numerical addresses to the contents of the video cassette tape. You can use these values to fast-forward or rewind the tape and play back the contents of the tape, or you can play the contents of the tape as an image on the monitor and use the "fast-forward" mode to display the monitor screen. The tape was advanced while visually observing the tape, and when the desired screen was reproduced, the rotation of the tape was stopped and the tape was reproduced.

[Technical Problem of the Present Invention] However, all of these conventional methods for finding the beginning of a tape are complicated. , a video cassette with a built-in cue mechanism configured to record an address signal at the same time as recording on a tape, and when playing back, detects the address signal using the playback-only circuit and plays back the desired image. A day 2 kit was also being developed.

However, video cassette decks configured to use such electrical means to locate the beginning of the tape had the disadvantages of a complicated mechanism and high production costs. .

Therefore, a technical object of the present invention is to easily and quickly locate the beginning of a video cassette tape without increasing production costs.

[Means for Solving the Problems] In order to solve such technical problems, in the present invention, transparent portions are provided at the start and end ends of the magnetic tape housed in the cassette half, and the video cassette deck is provided with transparent parts. A tape of a video cassette tape that detects the light-transmitting part by a drive motor control optical sensor consisting of a light emitting part and a light receiving part, and controls the operation of a drive motor installed in a video cassette deck to stop tape running. In the travel control mechanism.

A marker is provided at the start position of the recorded content on the magnetic tape, and a marker detection sensor capable of detecting the marker is provided inside the cassette half, and is capable of emitting light to a light receiving section of the optical sensor for controlling the drive motor. A video cassette tape side light emitting section that emits light in conjunction with the detection of a marker by the marker detection sensor is provided at the site, and one end of this cassette tape side light emitting section receives the light from the light emitting section of the drive motor control moonlight sensor. an optical fiber disposed at a location where light can be collected and whose other end is disposed at a location where light can be emitted to a light receiving section of a drive motor control optical sensor;
Liquid crystal technology that can open and close the optical path within this optical fiber
When the marker detection sensor detects the marker provided on the magnetic tape, the light emitting part on the cassette tape side is activated by the light receiving part 16a of the drive motor control moonlight sensor, and the drive motor installed in the video cassette deck is activated. The tape is configured to stop running of the tape by controlling the operation of the tape.

[Example] Hereinafter, a tape running control mechanism for a video cassette tape according to the present invention will be described in detail based on an example shown in the accompanying drawings.

As shown in FIG. 2, in the tape running control mechanism 22 of the cassette tape according to the present embodiment, the starting end 21 and the ending end 20 of the magnetic tape 10 of the video cassette tape 18 loaded in the video cassette deck 15 are , a transparent part 12.13 consisting of a transparent leader tape is provided.

On the other hand, the video cassette deck 15 is provided with a drive motor control optical sensor 19 consisting of a light emitting section 17 and light receiving sections 16a and 16b. The light emitting section 17 constituting the optical sensor 19 for controlling the drive motor is inserted into the video cassette tape 18 . The light receiving sections 16a, 16
b are provided at the side portions of both lengthwise ends of the video cassette tape 18, respectively, and the light emitting portion 1
It is arranged so that it can receive the light emitted from 7.

Then, the user operates the operation section provided on the video cassette deck 15 as appropriate to operate the drive motor 14 in, for example, fast forward mode, and transfers the magnetic tape 10 to the supply reel 3.
The entire magnetic tape 1O is wound up from 8 to the take-up reel 39, and a light-transmitting part 13 made of a transparent leader tape provided at the terminal end 20 of the magnetic tape 10 serves as a light-emitting part of the optical sensor 19 for controlling the drive motor. 17 to the light receiving section 16b, passing through the light transmitting section 13 and reaching the light receiving section 16b, the light receiving section 16b detects the light emitted from the light emitting section 17 and controls the drive motor. Optical sensor 1
9 sends an electric signal to the system control section built in the video cassette deck to the effect that the transparent section 13 has been detected. In this case, the system control section controls the drive motor 1
A is configured to stop the operation of 4 and stop the tape running.

If the video cassette deck is equipped with a so-called auto-rewind mechanism, the user operates the playback switch to run the magnetic tape 10 from the supply reel 38 to the take-up reel 39 in playback mode. When the drive motor control optical sensor 19 detects the transparent portion 13 at the end 20 of the magnetic tape 1o, the system control circuit (not shown) temporarily controls the operation of the drive motor 14. Immediately after stopping, the drive motor 14 is reversely rotated to wind the magnetic tape 10 onto the supply reel 38.

The video cassette tape 1 used in the tape running control mechanism 22 of the video cassette chip according to the present embodiment is
8, four pieces of music and images corresponding to the four pieces of music are recorded in advance on the wound magnetic tape 10. In the video cassette tape tape running control mechanism 22 according to this embodiment, as shown in FIG. At the start positions of each of the above four songs recorded on the magnetic tape 10 wound on the magnetic tape 39.

Four markers 23 each made of aluminum foil are attached to the inner surface of the magnetic tape IO. A marker detection optical sensor 24 is located near the tape guide 25 provided on the take-up reel 39 side of the cassette half 26 of the video cassette tape 18 and on the inside of the magnetic tape 10. is provided. In this embodiment, as shown in FIG. 3, the marker detection optical sensor 24 is composed of a reflective photoinstructor, and includes a light emitting section 29 and a light receiving section 30 inside.

As shown in FIG. 3, the marker 23 affixed to the start position of the masterpiece on the magnetic tape 10 is
When passing the position in front of the marker detection optical sensor 24 as the light travels, the light emitted from the light emitting section 29 is
The marker 23 attached to the inner surface of the magnetic tape 10 is irradiated, and the light from the light emitting section 29 that irradiates the marker 23 is reflected and reaches the light receiving section 30, and the marker detection optical sensor 24 detects the marker 23. It is configured so that it can be done.

Further, in the video cassette tape tape running control mechanism 22 according to the present embodiment, as shown in FIG. Outside the video cassette tape 18, there are two cassette tape individual light emitting units 3.
5.36 is provided. That is, the side ribs 37, 41 forming the frame of the cassette half 26b include the parts that can emit light to the two light receiving parts lea, 16b forming the optical sensor 19 for controlling the drive motor provided on the video cassette deck 15. , cassette tape individual light emitting sections 35 and 36 are provided, respectively.

The light emitting parts 35 and 36 of the cassette tape have one end 91.
91 is the light emitting part 17 of the optical sensor 19 for controlling the drive motor.
The other end 9
2.92 is the light receiving part 18 of the drive motor control optical sensor 19
It consists of an optical fiber 56.56 disposed in a position capable of emitting light with respect to the optical fibers 56.56 and 16b, and a liquid crystal shutter 93.93 provided in the middle of the optical fiber 56.56.

That is, in this embodiment, as shown in FIG. 1, the cassette tape individual light emitting sections 35 and 36 each emit light from the light emitting 's17 of the drive motor control optical sensor 19 provided on the video cassette deck side. and the optical fiber 56.
By controlling the opening and closing of the optical path within the optical fibers 56 and 56 using liquid crystal shutters 93 and 93, the light can be emitted to the light receiving sections 16a and 16b.

Since the light emitting section 17 provided on the video cassette deck side is configured to be lit at all times, the liquid crystal shutters 93 and 93 are normally closed.
When this liquid crystal shutter 93.93 is in an open state, the light emitting section 17 moves from the cassette tape individual light emitting section 35.3.
6 is opened by an optical fiber 56.56,
The light is emitted to the light receiving sections 16a and 16b.

On one optical path 4Oa of the light emitted from the light emitting unit 17 constituting the optical sensor 19 for controlling the drive motor provided in the video cassette deck 15, the side lip 37 constituting the frame of the cassette half 26 is opened. Hole 42
and an opening 43 are provided so that the light emitted from the light emitting section 17 reaches the light receiving section 16a. The cassette tape individual light emitting section 35 is provided on the side of the aperture 42 provided in the side rib 37, and is connected to the drive provided in the video power setting/ticking device 15 through the aperture 43. It is configured to emit light to one of the light receiving sections 16a that constitutes the motor control optical sensor 19.

On the other hand, the cassette half 26 of the video cassette tape 18 is on the optical path 40b from the light emitting section 17 constituting the drive motor control optical sensor 19 to the other light receiving section 156b.
An outer aperture 47 and an inner aperture 48 are provided in the side surface 49 of the cassette tape, and the other cassette tape light emitting section 36 is provided near the aperture 48. A tape guide 44 is provided on the inside of the opening 48, and a tape roller 45 is provided on the tape guide 44 at a position closer to the inside of the cassette half 26.

The magnetic tape 10 is then wound around a tape guide 44 and a tape roller 45 so as to reach a supply reel 38 . Furthermore, the tape guide 44 has
A tape retainer 46 is provided to prevent the supply reel 38 of the magnetic tape 10 from sagging, and one end of the tape retainer 46 is fixed to the tape guide 44.
The other end is slightly folded back and is in sliding contact with the tape roller 45, and is provided so as to be in pressure contact with the inner side surface of the wound magnetic tape 10. And this tape retainer 46 is
The other cassette tape light-emitting section 36 is made of a metallic material that can reflect light, and the other cassette tape light-emitting section 36 can emit light to this tape holder 46, and is also reflected to the tape holder 4B and reaches the other light-receiving part 18b. installed.

Then, as shown in FIG. 4, the video cassette tape 18
An input section 32 and a display section 33 are provided on the back side 31 of the magnetic tape 10. The input section 32 can arbitrarily designate a desired recording content among the plurality of recorded contents recorded on the magnetic tape IO. The input section 32 is provided with a display (track number) corresponding to each recorded content. It consists of a select switch 34 consisting of a button switch of 4 ([) corresponding to the number of recorded contents (4 songs),
It is configured so that each of the four pieces of music recorded on the magnetic tape 10 can be selected and six pieces of music can be played back in an appropriate order. The display section 33 is composed of four sections 57, each of which is formed by a 7-segment LED, and the user operates the input section 32, which is composed of the select switch 34 consisting of the button switch, to generate a magnetic field. If the order of the songs desired to be played out of the four songs recorded on the tape IO is determined appropriately, the numbers for displaying songs 1 and 6 can be displayed in each section 57 in the determined order. There is.

Further, as shown in FIG. 1, a control section 27 consisting of a microcomputer is provided in a region defined by a rib 50 adjacent to the take-up side reel 39 and the supply side reel 38, and furthermore, a control section 27 consisting of a microcomputer is provided. A power supply unit 28 made of a battery is provided at a corner provided at one end of the back surface of the battery 26 and defined by the rib 54 .

Further, in a region adjacent to the supply side reel 38 and defined by a rib 53 provided at the other end of the back surface of the cassette half 26, a marker detection sensor 24 or a drive motor control device is provided. A signal sound generating means 94 is provided that generates a signal sound in conjunction with the detection of the transparent portion by the optical sensor.

That is, in this embodiment, the marker detection sensor 2
4 detects the marker 23 provided at the start position of the recorded content, or the optical sensor 1 for controlling the drive motor
9 detects the light-transmitting part 12.13 of the magnetic tape IO, the cassette tape emits light gs35.38 or the light-receiving part 1 of the drive motor control optical sensor 19 from the light-emitting part 17.
6a.

16b, and controls the operation of the drive motor 14 installed in the video cassette deck 15 to stop tape running, and also activates the signal sound generating means 94,
In these cases, a signal sound is emitted to notify the user that the tape has stopped running from the playback, fast forward, or rewind state.

Further, when the marker detection sensor 24 detects the marker 23 provided in the input unit 32 at the start position of the recording content specified by the user as appropriate, the control unit 27 controls the cassette tape. Luminous! 35.38
From the light receiving part lea, 16b of the optical sensor for drive motor control
By emitting light, the operation of the drive motor 14 built into the video cassette deck 15 can be controlled to stop tape running and the signal sound generating means 94 can be activated.

On the other hand, as shown in FIG. 5, in the video cassette tape 18 according to this embodiment, reels 38, 39
A transmission mechanism 68 consisting of a gear mechanism is provided inside, and a video force set device is provided.

The rotation of the tape drive shaft 73 provided at the rear is amplified and transmitted to the reels 38 and 39.

As shown in FIG. 5, the reels 38 and 39 installed in the video cassette chip 18 according to the present embodiment have a circular hub portion 61 having a cylindrical magnetic tape winding device s60,
It consists of a disc-shaped reel flange part 62 fixed almost horizontally to the upper end of a cylindrical magnetic tape winding part 60. The reel hub portion 61 is located at the inner side of the cassette half 26.
The reel flange portion 62 is provided with a protruding support portion 64 formed at the rotation center of the reel flange portion 62, and this support portion 64 is rotatably mounted on the cassette. It is rotatably supported within a recess 66 formed in the inner upper surface portion 65 of the half 26 .

Inside the magnetic tape winding section 60 of the reel 38, 39,
Transmission mechanism 6 consisting of tape drive shaft housing 67 and gear device
8 is provided. The entire tape drive shaft housing portion 67 is formed into a substantially cylindrical shape, and is provided with a flange portion 69 projecting outward from the lower end portion over the side surface area. - On the other hand, a ring-shaped protrusion 72 is formed inward of the cassette half 26 on the circumference of the drive shaft insertion hole 71 provided in the back surface 70 of the cassette half 26, and the tape drive The shaft 73 is arranged in the tape drive shaft insertion hole 71 with a flange portion 96 rotatably placed on the convex portion 72 on the ring.

When the video cassette tape 18 is loaded, the tape drive shaft 73 is housed and fixed in the tape drive shaft storage part 67 whose tip end is placed in the tape drive shaft insertion hole 71, and the tape drive shaft 73 is rotated. is configured to transmit the information to the tape drive shaft storage section 67.

The transmission mechanism 6B is composed of a gear device as described above, and includes a driving rotation gear 74, a variable speed rotation gear 75, and a reel rotation gear 76.

The driving rotation gear 74 is fixed to the upper surface of a cylindrical tape drive shaft storage section 67, and is configured to rotate at the same speed as the tape drive shaft 73 through the tape drive shaft storage section 67. There is.

The speed change rotation gear 75 includes a support arm 79 fixed substantially horizontally to a support 78 erected on the inner lower surface 77 of the cassette half 26, and a shaft portion 80 erected substantially perpendicularly to the support arm 79. Speed change gear B fixed to this shaft portion 80
1, and a drive gear 82 fixed to the upper end of the transmission gear 81.
It consists of The speed change gear 81 is the driving rotary gear 7
It is formed to have a diameter smaller than that of 4, has a cylindrical shape as a whole, and is arranged so as to mesh with the driving rotation gear 74.

Further, as described above, the drive gear 82 is the transmission gear 8
1, and the same shaft portion 83 as the transmission gear 81.
It rotates around the transmission gear 81, and consists of a disc-shaped gear with a diameter larger than that of the transmission gear 81. The variable speed rotating gear 75 constituted by these gears 781 and 82 is
The drive gear 82 is configured to be interlocked with the driving rotation gear 74 and to output rotation at a higher speed than the driving rotation gear 74 .

The reel rotation gear 76 is connected to the reel 38.39.
The drive gear 8 is fixed to the back surface of the rotation center portion 84 of the reel flange portion 62 that constitutes the reel flange portion 62 and meshes with the drive gear 82 that constitutes the speed change rotation gear 75.
It is arranged to rotate in conjunction with 2.

This reel rotating gear 76 is formed to have a larger diameter than the drive gear 82, and has a rotating shaft 85 protruding from its center.
hanging downwards. The rotating shaft 85 is rotatably inserted into a hole 86 provided at the center of rotation of the drive rotating gear 74 and a hole 87 provided in the upper surface of the tape drive shaft housing 67 .

Next, a case will be described in which the video cassette tape 18 according to this embodiment is loaded into a video cassette deck and, for example, fast-forwarding is performed.

First, when the fast forward button provided on the video cassette deck is pressed, the main brake of the reel stand 88 is released, the built-in drive motor is activated, the clutch pulley rotates clockwise, and the fast forward rewind idler 89 is activated. It is pressed onto the reel stand 88 on the take-up side, and the reel No. 88 on the take-up side is rotated at high speed. In this case, the tape drive shaft 73
transmits the clockwise rotation of the 88th take-up reel to the tape drive shaft accommodating portion 67, and the driving rotation gear 74 constituting the transmission mechanism 68 fixed to the tape drive shaft 73 is transmitted together with the tape drive shaft accommodating portion 67. Rotate at high speed. The rotation of the driving rotary gear 74 is transmitted to a speed change gear 81 that constitutes a speed change rotating gear 75 that meshes with the driving rotary gear 74 .

In this case, the speed change rotation gear 75 is as described above.

Since it is formed to have a much smaller diameter than the driving rotary gear 74, the rotational speed of the variable speed rotary gear 75 is much higher than the rotational speed of the driving rotary gear 74.

A drive gear 82 fixed to the upper end of the speed change rotation gear 75 rotates at the same speed as the speed change rotation gear 75, and the high speed rotation of the drive gear 82 is caused by the reel rotation gear 76 meshing with the drive gear 82. transmitted to.

Since the reel rotation gear 76 is fixed to the rotation center portion 84, the high-speed rotation from the driving rotation gear 74 output in the drive gear 82 is transmitted to the reel flange portion 62 via the reel rotation gear 76. supplied to

As a result, the rotational driving force transmitted from the drive motor built into the video cassette deck to the reel stand 88 and tape drive shaft 73 via the fast forward/rewind idler 89 is as follows:
By passing through the transmission mechanism 68, it is much amplified and supplied to the reel 38.39, and as a result, the reel 38.39 rotates at a much higher speed than the rotational speed of the reel stand 88 and the tape drive shaft 73. , magnetic tape lO
It winds up at a higher speed.

The above description has been made using the video cassette tape 18 according to the present embodiment as an example to perform a fast forward operation, but the same applies to the case where a rewind operation is performed. When the rewind button provided on the deck is pressed, the main brake of the reel stand 88 is released, the built-in drive motor is activated, the clutch pulley rotates counterclockwise, and the fast forward rewind idler 89 moves the reel. The reel is crimped onto the stand (supply side) and the reel stand (supply side) is rotated counterclockwise at high speed.

In this case, as in the case described above, the rotational driving force on the reel stand 88 is amplified via the transmission mechanism 68 provided inside the reel 38.39 housed in the cassette half 26, and is transmitted to the reel 38.39. The magnetic tape IO is fed and rewound at high speed.

Next, using the video cassette tape tape running control mechanism according to this embodiment, four
An example will be explained in which only the second and fourth songs out of the music of the song and the videos corresponding to the six songs are played. Also, in this case,
The description will be made assuming that the magnetic tape 10 is completely wound up on the supply reel 38.

First, as shown in FIG. 4, the operator selects a song by pressing the select switch 34, which is a button switch that displays the second and fourth songs, on the input section 32 provided on the back surface 31 of the video cassette tape 18. The operation is performed to display on each section 57 of the display section 33 consisting of LEDs that the second and fourth songs will be played, and to operate the video cassette deck 15 loaded with the video cassette tape 18 in fast forward mode.

In this case, by the song selection operation on the video cassette tape 18, the controller 27 built in the video cassette tape 18 causes the marker detection optical sensor 24 to
When the second marker 23 pasted on the magnetic tape 10 is detected, the cassette tape individual light emitting section 36 is made to emit light to control the operation of the drive motor 14, stopping the running of the magnetic tape 10, and the third marker 23 is detected. Marker 23 is detected by marker detection optical sensor 2
4 is detected, both the cassette tape accidental light section 35 and the cassette tape individual light emitting section 36 are made to emit light, and the operation of the drive motor is controlled to stop the running of the magnetic tape 10 and to stop the stopped state. It is configured to be maintained.

In other words, the video cassette deck used in this embodiment is equipped with a so-called auto-rewind mechanism.
This auto-rewind mechanism is such that when the light emitting section 17 on the video cassette deck side emits light to the light receiving section 16b in the fast forward mode of the video cassette deck, the running of the magnetic tape 10 is stopped; When the light is emitted to the light receiving section 16b, it is configured to be rewound immediately after stopping.

Therefore, the second track has finished playing, and the third marker 2
3 (marker indicating the start position of the third track) is detected by the marker detection optical sensor 24 and the control unit 27 causes the cassette tape individual light emitting unit 36 to emit light, the system control built in the video cassette deck The controller determines that the signal indicates that the magnetic tape 10 has been completely wound onto the take-up reel 39 in the playback mode, and immediately rewinds the magnetic tape after tape running is stopped. Therefore, the cassette tape accidental light section 35
By also emitting light, it is assumed to the system control section of the video cassette deck that the magnetic tape 10 is completely wound onto the supply reel 38, and the running of the magnetic tape 10 is stopped.

Moreover, the control section 27 built into the video cassette 18 is
When the marker detection optical sensor 24 detects the fourth marker 23 (marker indicating the start position of the fourth track) when the magnetic tape 10 is in the fast forward mode, the cassette tape individual light emitting section 36 is caused to emit light, and the magnetic tape It is configured to stop the running of lO.

Therefore, an operation to select the second and fourth songs is performed on the input section 32 of the video set tape 18,
Video cassette tape 18 is video cassette deck 15
loaded and operating in fast-forward mode,
When the marker detection optical sensor 24 detects the second marker 23 (marker indicating the start position of the second song) attached to the magnetic tape 10, the control unit 27 performs the following operations as shown in FIG. The liquid crystal shutter 93 is opened and the cassette tape individual light emitting section 3 is inserted into the optical fiber 56 from the light emitting section 17.
6, and causes the cassette tape individual light emitting section 36 to emit light to the light receiving section 16b.

Then, the light receiving section 1 provided on the video cassette deck side
6b receives the light emitted from the cassette tape individual light emitting section 36, and the light receiving section 16b inputs an electric signal to a system control section provided in the video cassette deck. Then, the system control section stops the drive motor 14, and as a result, the ai magnetic tape 10 stops running.

The control section 27 also controls the cassette tape individual light emitting section 36.
emits light and energizes the signal sound generating means 94 to operate the signal sound generating means 94 to generate a signal sound,
The user will be notified that fast forward mode has ended and tape running has stopped.
Notify that the file is ready for playback.

In this case, the operator can play the music and video of the second song by pressing the playback switch on the operating section provided on the video cassette deck to enter the playback mode.

After that, the magnetic tape IO runs, the second song ends, and the marker detection optical sensor 24 detects the third marker 23 (provided at the start position of the third song) among the markers 23 affixed to the magnetic tape IO. marker) is detected, as shown in FIG.

The control section 27 opens the liquid crystal shutter 93 to form an optical path in the optical fiber 56 from the light emitting section 17 to the cassette tape individual light emitting section 36, and first causes the cassette tape individual light emitting section 36 to emit light to the light receiving section 16b. . In this case, since the mode on the video cassette deck side is currently the playback mode, the light receiving section 16 of the light emitting section 36 on the cassette 7 side
The system control unit of the video cassette deck determines that this is a signal indicating that all the magnetic tape 10 has been wound onto the take-up reel 39, and the auto-rewind mechanism stops the magnetic tape 10 from running. After stopping, it immediately tries to switch to rewind mode.

Therefore, the control section 27 controls the cassette tape side light emitting section 3.
At approximately the same time as the light emission of the magnetic tape 6, the other cassette tape light emitting section 35 is caused to emit light to the light receiving section 16a, and the magnetic tape l
This simulates a state in which all of the magnetic tape 10 has been wound onto the supply reel 38, sets the mode on the video cassette deck side to a stop mode, and stops the running of the magnetic tape 10.

Thereafter, the operator operates the operating section of the video cassette deck as appropriate to fast-forward the third track, for example, by setting it to fast-forward mode, and the marker detection optical sensor 24 detects four of the markers attached to the magnetic tape 10. th marker 23 (
When the marker set at the start position of the fourth song) is detected, the marker detection optical sensor 24 detects the second marker 23 (the marker set at the start position of the second song). As shown in FIG.
7 operates the liquid crystal shutter 93 to form an optical path in the optical fiber 56, causes the cassette tape individual light emitting section 36 to emit light to the light receiving section 16b provided on the video cassette deck side, and stops the operation of the drive motor. , stops the running of the magnetic tape IO, and operates the @ sound generating means 94 to generate a signal sound to announce the stop of the tape running.

Then, at this stage, the operator can appropriately operate the operation section on the video cassette deck side to set the playback mode, thereby making it possible to play the music of the fourth track and the corresponding video on the monitor, etc. . After that, when the fourth song ends and the video cassette deck light emitting section 17 detects the light transmitting section 13 provided at the end 20 of the magnetic tape 10, the video cassette deck light emits as shown in FIG. The light emitted from the section 17 reaches the video cassette deck side light receiving section 16b, and the light receiving section 16b issues a predetermined signal to a system control section (not shown) to operate a so-called auto-rewind mechanism.

That is, the system control section stops the operation of the drive motor 14 built into the video cassette deck, and immediately thereafter shifts to the rewind mode, and reverses the rotation of the drive motor 14. As a result, the magnetic tape 10 is rewound and wound onto the supply side tape 38, and the video cassette deck individual light emitting unit 17
When the light transmitting section 12 provided at the starting end 21 of 0 is detected, the light emitted from the light emitting section 17 reaches the light receiving section lea as shown in FIG. The operation of the motor 14 is stopped and the running of the magnetic tape IO is stopped, thereby returning to the initial state of operation.

In this case, the control section 27 operates the signal sound generating means 94 to generate a signal sound to notify the user that the video cassette tape 18 has reached the tape start position.

Tape running control mechanism 2 for cassette tape according to the present embodiment
In the video cassette tape 18 used in 2,
The internally installed reels 38 and 39 are provided with a transmission mechanism 68 consisting of a gear device, and are configured to amplify the rotation of the tape drive shaft 73 and transmit it to the reels 38 and 39. When the deck is in fast forward mode or rewind mode, the reels 38 and 39 can be rotated at a higher speed than a general video cassette tape. This makes it possible to easily and quickly locate the beginning of the content recorded on the magnetic tape 10.

In this embodiment, the optical fiber 56 and the liquid crystal shutter 9
3, the light emitting section 1 provided on the video cassette chip
Since the cassette tape individual light emitting sections 35 and 36 are configured using the light of 7, the power consumption can be reduced compared to when using other light emitting means, such as LEDs, and the power source section 28 can be made compact. It becomes possible to make it a thing.

Furthermore, in the above embodiment, the auto rewind mechanism built into the video cassette deck operates only in the playback mode, but is not limited to the above embodiment, and may also operate in the fast forward mode. It is also possible to apply the tape running control mechanism of the cassette tape according to this embodiment to the case where the cassette tape is configured as follows. If the auto-rewind mechanism is configured to operate not only in the playback mode but also in the fast-forward mode, it is necessary to cause both of the cassette tape individual light emitting sections 35 and 36 to emit light at all times.

Furthermore, in the above embodiment, the case where a marker made of aluminum foil was used as the marker 23 affixed to the magnetic tape IO was explained as an example, but it is also possible to affix silver paper. In addition to the markers attached to the tape 10, holes may be provided in appropriate parts of the magnetic tape 10 to transmit the light emitted from the optical sensor for marker detection.In this case, the marker detection light The sensor needs to be an optical sensor in which the light emitting part and the light receiving part are arranged on both sides of the magnetic tape 10, instead of being a reflective type optical sensor equipped with a light emitting part and a light receiving part as in the above embodiment. becomes.

In addition, in this embodiment, the video cassette chip 18
Although the case has been described as an example in which music and video are pre-recorded on the magnetic tape 10 of 2008, and a marker 23 is provided at the start position of the recorded masterpiece, the present invention is not limited to this embodiment. It may also be a video cassette tape that includes a magnetic tape that is not recorded in advance.

In other words, when using a so-called blank video cassette tape in which nothing is recorded, the user can record desired recorded contents on the magnetic tape 10 as appropriate, but the starting position of the recorded contents cannot be changed. By attaching a removable marker to the tape drive control mechanism of the video cassette tape according to the present invention, it can be applied.

In addition, in this embodiment, the video cassette tape 18
The input section 32 provided in the magnetic tape IO has been described using as an example a case in which the select switch 34 is composed of four pushbutton switches each having a display corresponding to each recording content of the magnetic tape IO. The present invention is not limited to this example, and as shown in FIG. 9, the input section 32 may use a so-called numeric keypad composed of ten switches each numbered 0 to 9.

Furthermore, in this embodiment, a signal sound generating means 94 is provided in the cassette half 26, and is configured to emit a signal sound when tape running stops in the play mode, fast forward mode, and rewind mode. Although the case has been described as an example, the present invention is not limited to this embodiment, and the signal sound generating means may not be provided.

In addition, as shown in FIG.
and an adapter 9 provided with a control section 27, a power supply section 28, etc.
5 and a video cassette tape main body 96 containing a reel wound with magnetic tape constitute a video cassette tape 97, and this adapter 95 may be detachably formed. When a video cassette tape 97 is constituted by an adapter 95 containing a built-in part 32, a control part 27, etc., and a video cassette chip main body 96, unlike the case of the video cassette tape 18 in the above embodiment, a large number of video cassettes can be used. When manufacturing the tape 97, it is sufficient to manufacture a small amount of the adapter 95 equipped with the control section 27, the input section 32, etc., and a large amount of the video cassette chip body 96, and the control section 27 and the input section are required for each video cassette chip 18. 32 etc., it becomes possible to reduce the manufacturing cost of the video cassette tape 97.

In addition, in the video cassette tape 18 used in the video cassette tape tape running control mechanism according to this embodiment, an optical sensor 24 made of a reflective photoinstructor is used as the marker detection sensor 24, and the marker is optically detected. Although the case where 23 is detected has been described as an example, the present invention is not limited to this embodiment.

For example, it may be configured to detect electrically using a sensing coil or the like.

[Effects of the Invention] As described above, in the tape running control mechanism for a video cassette tape according to the present invention, while utilizing the tape running control mechanism provided on the video cassette deck side, it is possible to move the magnetic tape to a desired position. While the marker is provided, the cassette case of the cassette tape is provided with a marker detection sensor, and a cassette tape side light emitting part that is linked to the marker detection sensor is provided in a part that can emit light to the light receiving part of the optical sensor for controlling the drive motor. It is possible to locate the beginning of the contents recorded on a cassette tape without making any changes to the mechanism on the video cassette deck side.

Therefore, unlike the conventional cassette deck cueing mechanism, there is no need to provide a circuit or the like on the video cassette deck side, and the cueing of the video cassette tape can be done easily and quickly without increasing manufacturing costs.

Furthermore, in the present invention, since the cassette tape side light emitting section is constructed by using an optical fiber and a liquid crystal shutter and using the light from the light emitting section provided on the video cassette deck, other light emitting means are separately provided. It is possible to reduce the amount of power used.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the structure of a video cassette used in a 4-meter tape running control system for a video cassette tape according to the present invention, and FIG. FIG. 3 is a conceptual diagram showing a tape running system provided in a video cassette deck used as a control mechanism, and FIG. FIG. 4, a perspective view showing an example, is a side view showing an embodiment of the input section and display section provided on the back side of the video cassette tape used in the tape running amount wa structure of the video cassette tape according to the present invention. 5 is a sectional view showing an example of the internal structure of a reel of a video cassette tape used in the tape running control mechanism for a video cassette tape according to the present invention, and FIG. A cross-sectional view showing a state in which the recorded contents of the cassette tape are cued using the tape running amount faJ1 configuration of the cassette tape;
FIG. 7 similarly shows a state in which the video cassette tape tape running control mechanism according to the present invention is used to cue the recorded contents of the video cassette tape, and both cassette tape side light emitting parts are made to emit light. FIG. 8 is a cross-sectional view showing a state in which tape running is stopped; FIG. FIG. 1O is a side view showing another embodiment of the video cassette tape input section used in the video cassette tape tape running control mechanism according to the present invention. FIG. 3 is a perspective view showing another example of the video cassette tape used. 10...Magnetic tape 12.13...Transparent part 1
4... Drive motor 15... Video cassette deck 16... Light receiving section 17... Light emitting section 18...
・Video cassette tape 19...Optical sensor for drive motor control 20...Terminal end 21...Starting end Tape running control 22...Video force setting mechanism 23...Marker 24...Light for marker detection Sensor 25...Tape guide 26...Cassette 27...
・Control unit 28... Power supply unit 29... Light emitting unit 30... Light receiving unit 31... Back part
32... Input section 33... Display section 34.
...Sereno 35.36...Cassette tape individual light emitting section 3
7... Side rib 38... Supply side reel 39
. . . Take-up reel 40 . . . Optical path 42. 43 . . . Opening portion 45 . 54... Rib 56... Optical fiber 41... Side rib 44... Tape guide 46 - Tape presser 48... Inner opening 50... Rib 52... Side part 55... ...Insertion hole 57...Division switch half 0...Magnetic tape winding part 1...Reel hub part 62...Reel flange part 3...Inside 64...Support part 5... Inner upper surface part 66... Recessed part 7... Tape drive shaft housing part 8... Transmission mechanism 69... Flange part 0...
- Back part 71... Drive shaft insertion hole 2... Convex part 73... Tape drive shaft 4... Driving rotating gear 75... Variable speed rotating gear 6... Reel rotating gear 77... Inside Lower surface part 8... support
79... Support arm O... Shaft part 81.
...Transmission gear 2...Drive gear 83...Shaft part 4...Rotation center part 85...Rotation shaft 6.87.
... Hole 88 ... Reel stand 9 ... Fast forward rewind idler... One end 92 ... Other end 3 ... Liquid crystal shutter 94 ... Signal sound generating means 5 ... Adapter 6 ... Video cassette tape body 97...video cassette tape

Claims (1)

[Claims] Translucent parts are provided at the beginning and end of the magnetic tape installed in the cassette half, and an optical sensor for controlling a drive motor consisting of a light emitting part and a light receiving part provided in the video cassette deck. In the video cassette tape tape running control mechanism, which detects the transparent part and controls the operation of the drive motor built into the video cassette deck to stop tape running, a marker is placed at the start position of the recorded content on the magnetic tape. A marker detection sensor capable of detecting a marker is provided on the inner side of the cassette half, and a marker detection sensor of the marker detection sensor is provided at a portion capable of emitting light to a light receiving section of the drive motor control optical sensor. A video cassette tape side light emitting section is provided which emits light in conjunction with the video cassette tape side light emitting section, and one end of the cassette tape side light emitting section is disposed at a position where light from the light emitting section of the drive motor control optical sensor can be collected. an optical fiber, the other end of which is placed at a location where it can emit light to the light receiving section of the optical sensor for controlling the drive motor;
It consists of a liquid crystal shutter that can open and close the optical path in this optical fiber, and when the marker detection sensor detects the marker provided on the magnetic tape, the light emitting part on the cassette tape side is activated by the light receiving part of the optical sensor for controlling the drive motor. 1. A tape running control mechanism for a video cassette tape, characterized in that it emits light to control the operation of a drive motor built into a video cassette deck to stop tape running.