JPS58200413A - Recording and reproducing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording/reproduction value (2) of a co-rotating head type having a plurality of channels by AD converting a video signal and an audio signal.

Various proposals have been made in the past regarding the configuration of a co-rotating head having multiple channels. Figure 1 (a) is one of them.The data recorder) is wound around the cylinder (13) over a length of approximately 180', and the signal is time-divided to the heads A and H. B is A1 and A respectively! * B1 and Uma no Tomi Channel ~ 11 minutes
1 # has been written. Note that arrow C represents one rotation of the cylinder (1), and arrow F:4JD represents the running direction of one rotation (1-pυ). FIG. 1(h) shows the tape format in this case.

(T1) to (T,) are heads AI and A!, respectively. , B
The track locus drawn by m and B2 is shown as a diagonal straight line.

Arrow E represents the head running direction. Head, A&B1
．． B, or V Linda (placed on the 17th, t
If the endothelium formed by them is 900, the intervals of the rack trajectories will be constant. Now, if one track trajectory in h 111(b) has a length equivalent to one field of a telegraph station, the position of superposition on the tape pattern is # ! M is as shown by the circle. That is, even if heads As and Bs are non-segment F, Am and Bm cause head switching in one segment, that is, in the middle of the - plane. Figure ＠g is another example of the conventional (b) rotation head configuration. In this case also 2
Eight sets of channel heads A1 and Ah2, channel heads B, and B time-divisionally record eight types of signals, and the signals are almost aligned to WMa on the paper. Therefore, in FIG. 2(b), the track trajectories of A1 and At (Bt and B8) are drawn aligned perpendicularly to the track trajectories.
) position, tape no (on the turn, (7)
), (corresponds to position 75. And head B,,B
, is at the position (i) of the 1800 opposite hook, and in Figure 2 (b) it is at the position (a), (Jl). In such a configuration, the head Bl is on the track. At the beginning of the track @Iku (・) - the same amount of information is not recorded, and similarly at the end of the track wms, there remains a portion where no information is recorded by the head B1.

As described above, the conventional configuration has the following drawbacks.

Even if it is a non-segment, if you use two channels, one of them will be a segment, which means a head switching part will occur in one wheel.

Measures against skew are required.

Data is organized into 10 blocks depending on the platform and channel of the O shift 1 diagram, and error correction is performed accordingly.

Since it becomes necessary to change the preamplifier ~, ■, D number, etc., the V stem configuration becomes complicated.

In the case of KLL, the time correspondence of the channels on the tape pattern is shifted by half a hook, making it complicated to play back at a speed other than the standard speed.

In the case of the 0-1 diagram, the last part of the recorded pattern ends at the center of the track.

If you subsequently record another inertia, the transition will be disrupted.

#b In the case of #1aO, there remains a portion on the tape pattern where information cannot be recorded, and the tape cannot be used effectively.

The conventional rotary head recording device having multiple channels is not limited to the one shown in FIG. 1 and FIG.

In any case, ξ can be seen as a modification of Figure 1 and the first intention.

The present invention provides a recording button that includes a converter for digitally converting at least one of a video signal and an audio signal, a divider for dividing the converted signal into a plurality of channels, and at least 11 of the channels. In addition to the above, a plurality of simultaneous rotating heads are provided to record the signals of the same number and lit recording channels on the recording medium, respectively, to delay the signal.
The invention is characterized by being provided with a maximum bill extender inserted into at least one or more of the channels detected through the transducer head to correct the time difference between the channels at the time of recording, The effect of moxibusting all the unreasonableness on the tape pattern of the platform divided into channels.

An embodiment of the present invention will be described in detail below based on FIG. 1 and 1114m.

Embodiment A- is a recording system block diagram for explaining an embodiment of the present invention. 01 is an input terminal into which a video signal, an audio signal, or an analog-discitter A/conversion signal is input. Ql is a channel divider that divides the signal input from input terminal O into two channels. - is iI! Head A with all (b) output for channels in m-.

Only the hook system is delayed. Note that this delay amount is shown in Figure 1 Q.
, half a truckload of model stroking. The respective channel signals are subjected to parity addition processing in a digital processing circuit, further modulated by 10, and are missed by the head A1. Recorded by AI.

At ^1 o'clock, as shown in the distance 4 factor, each is played from the head Ale AI, passes through the head amp "# axis, and is turned into a cram school, low-pass filter!

- It is sent to an analog processing unit 1iif11*■4 consisting of a mountain number, etc., where it is converted into a digital signal, and then sent to a digital processing unit consisting of a time page 7 collector
Sent to M&ee-. Thereafter, only the chaff book N of the head Aha is passed through the delay l1I(2) which has the same delay amount as the w delivery-one wheel. Then the two channel signals are sent to mixer i1@ to be made into one signal.

It is sent to the next block from the output terminal (2). Here, only the digit channel head At, 4 has been described.
Even when there are two or more number channel heads, the same thing is done for each number channel head.

According to this configuration, Nadekura, head A, of the model in FIG.
The track drawn by , B, may be in the 11th place (
3) is M@ of the J sea urchin track, which is the same as heads A, B1.
I'm coming. In other words, all of them become non-drugs, and as a result, all of the drawbacks of Φ~O described in lij can be overcome. In the case of the model shown in FIG. 2, heads A1 and A in FIGS. 1118 and 4 are interchanged. And the music delay bulk is Hera) "m II (1) - Time opening when passing through the ring of ceramics, that is, in the case of head B1, 1st place & (7) to place, :,.

This is the transit time up to (2). ′:゛The track trajectory of head B1 needs to extend the track end by the amount of the delay, so the total track trajectory of head B1 is equal to W(2
) to ), where the W wheel is electric type m1(a)
That is, head A1. B1 is the place @ (5) to (65
Draw with m.

Heads A, , B are drawn from position (4) at (411!).

And Fig. 8 (1st place 5ite on W tape pattern)
Records from * to +9/. If you configure it like this, it will work as before.

The pattern occupied from position te) to (65m) can be worked out from position 4 to 161, i.e., as described in (e) above.
The shortcomings of will also be overcome and overcome.

As mentioned in * above, the recording system processes the video signal and the sound p4 by converting them, but the same applies when at least one of them is digitally converted.

As described above, according to the present invention, it is possible to solve all the problems caused by the tape pattern being divided into a plurality of channels.

[Brief explanation of drawings]

1111 E (a) (- indicates the plan view of the conventional cylinder and the tape pattern m, lk!
FIG. 8 and FIG. 4 are block diagrams of a recording system and a reprinting system according to an embodiment of the present invention. (2)...Channel division -1Q1...Delay device [first delay device], 94 (2) Cap 1...Digital processing H path, Zeng...Delay device [movement 2 delay device], -...Mixer,
(At) (Av) ”・(b) Head turning agent Yoshihiro Morimoto Figure 1 (a) (b) Figure 2 ((1) (b>

Claims (1)

[Claims] l. A converter for digitally converting at least one of a video signal and an audio signal, and a divider for dividing the digital fi/converted signal into a plurality of channels;
An SLL delay device inserted into at least one of the channels to delay a signal, and a plurality of diversion heads each recording the signals of the plurality of channels on a recording medium, and 1142 delay device installed in at least one of the detected channels to correct the time difference between the channels during recording.