JPS62266787A - Recorder - Google Patents

Abstract

PURPOSE:To automatically set the location for recording a programs to effectively use a recording medium by determining the location of a program pertinent to an information that is simultaneously recorded by using plural recording areas prior to an information using single recording area. CONSTITUTION:When a timer program including a program number, record starting date and time, record ending, date and time, input channel, etc. is set by a console panel 24, a timer device 60 stores this set program in a memory 61. The storage area numbers of locations of the programs pertinent to information that area simultaneously recorded by using plural recording areas are determined in the order from the one of the largest number of simultaneously used recording areas downward by a system controller 25 and the timer device 60 based on the content of storage in the memory 61, prior to the program pertinent to an information using signal recording area. In accordance with the result of the said determination, the programs stored in the memory 61 are re-arranged. As a result, the suitable locations of program recording are automatically determined without requiring any complicated operation, and the recording medium can be used effectively.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for selectively recording first information in any one of a plurality of recording areas extending in the longitudinal direction of a tape-shaped recording medium. The present invention relates to a recording device that records second information by simultaneously using at least two of the plurality of areas.

[Prior Art] Hereinafter, a multi-track digital audio tape recorder capable of time-base compression of audio signals and digital modulation recording of six tapes extending in parallel in the longitudinal direction of the magnetic tape will be explained as an example. .

FIG. 5 is a diagram showing part of a tape running system of a conventional digital audio tape recorder of this type. In FIG. 5, 1 is a magnetic tape, and 2 is a rotating cylinder that holds a rotating cylinder 3.4. As a result, the head 3.4 traces the tape 1 diagonally and records the audio signal, and each time the head 3.4 rotates 36'', it traces the tape 1 diagonally to six areas formed in the longitudinal direction of the tape 1. By recording time-base compressed audio signals, an audio-only tape recorder capable of recording a total of six channels of audio signals can be obtained.

In addition, as is well known, the head 3
,4. It is also possible to record one field of video signals while the tape rotates 180', and record digital audio signals during the remaining 36 degrees of tape winding as described above.

In FIG. 6, CHI to CH& are audio signals during the period when head 3 or head 4 is tracing from A to B, B to C9C, D to E, E to F, and F to G in FIG. This is the area where is recorded. It is possible to record audio signals separately in each area.
(The so-called azimuth ball fortune-telling is performed in each area, but a pilot signal for tracking control is recorded in each area, and a predetermined rotation (
f l−f 2→f,→f,), and there is no correlation between the regions.

In addition, the areas indicated by CH1 to CH3 are tape l in FIG.
If it is assumed that recording and reproduction is performed when the vehicle is traveling at a predetermined speed in the direction shown by arrow 7, and recording and reproduction is performed in the area shown by CH2-CH2 when it is also traveling in the direction shown by arrow 9, then As shown in FIG. 6, the slope of each track of Tashiro shown in CHI-CH3 is different by 1-. However, regarding the difference in relative speed at this time, the difference in relative speed due to the running of the tape l is extremely small compared to the difference due to the rotation of the head 3.4, so it does not pose a problem.

FIG. 7 is a Tinu chart for recording and reproducing the tape recorder as described above. In FIG.
“High level (11)” and “low level (L)” every 60 seconds.
)" is repeated. It is a funeral wave of 30H, and (b)
is a PG of opposite polarity to PG(a). Here PG(a)
is H, PG while the head 3 rotates from B to G in Fig. 5.
(b) is assumed to be H while the head 4 rotates from B to G.

Figure 7 (C') shows the data reading pulse obtained from PG (a), which corresponds to 1 field of the video signal (1/60 seconds).
This is for sampling the audio signal of the period corresponding to every other field. In FIG. 7(b), H indicates a signal processing period for adding redundant code 1 for error correction or changing the arrangement using a RAM or the like to sampled audio data for 1 field.

In FIG. 7(e), the data recording period is indicated by H, and the timing at which the recording data obtained by the above-mentioned signal processing is recorded on the tape 1 is indicated.

For example, if we follow the signal flow in time using Fig. 7, t
The period from l to t3 (while head 3 is moving from B to G), the sampled data is from t3 to t5 (when head 3 is moving from G to A)
Signal processing is performed at t5-t6 (head 3 is A-B)
recorded over a period of IQ+5 is recorded in the area of CHI in FIG. 6 by Rad3. The data sampled during the period when PG (b) is H is subjected to signal processing at the same timing and recorded in the CHI area by the head 4.

FIG. 7(f) shows a PG obtained by shifting PG(a) to a predetermined phase (in this case, 36'' phase for l region).

Hereinafter, a case will be described in which an audio signal is recorded using PG(f) and a PG (not shown) having the opposite characteristics. The data sampled at 7th [% t2 to t4 is t4
The signal is processed according to the signal shown in FIG. 7(g) between 76 and t6, and is recorded in accordance with the signal shown in FIG. 7(h) between 76 and t7.

That is, data is recorded by the head 3 in the areas shown at C and H2 in FIG. 6 during the period when the head 3 traces B to C.

Similarly, data sampled during the period from t4 to t7 is recorded by the helad 4 in the area indicated by CH2.

Next, the operation of reproducing the signal recorded in the area indicated by CH2 will be explained.

The head 3 reads data from the tape 1 at the 7th rI.
? The belief shown in I(h) is 6 to 7 (t 1
- t2), and signal processing opposite to that during recording is performed from t7 to t8 (t2 to t3) according to the signals shown in FIG. 7(i). That is, error correction and the like are performed during this period, and a reproduced audio signal is output from t8 to t9 (from t3 to t6) in accordance with the signal shown in the seventh UA(i). Of course, the reproduction operation by the head 4 is performed with a phase difference of 180@ from the above-mentioned operation, and thus a continuous reproduction audio signal is obtained.

Also, regarding other areas CH3 to C)16, PG(a)
Needless to say, it is sufficient to shift the phase by nX36@ and perform the recording/reproducing operation described in 1-1 based on this, and this does not depend on the running direction of the tape.

Next, an example of a data format conventionally used in the above-mentioned apparatus will be explained. FIG. 8 is a diagram showing an example of the data format recorded on the l track of each area in FIG. 6, that is, the format of data containing PMC audio data corresponding to a two-channel audio signal of l/60 seconds. .

In the data madrisk shown in FIG. 8, the column indicated by 5ync is a synchronization data column, the column indicated by address is an address data column, the columns indicated by P and Q are redundant data columns for error correction, and the column indicated by CRCC is a well-known data column. The CRCC check code data strings DI and D2 each include a plurality of columns, and are data strings each containing two channels of audio signal information. On the other hand, b(0) to b(3x-1) respectively indicate each row of this data matrix, and each row is recorded sequentially from the left side to the right side in the figure as a data block of person t(l). 0 For example, after the 5 sync column data of b (o), the next address column data of b (o), and then the b (o) address column data.
(0) is recorded sequentially, and after the last column data of b(1), 5y of b(1+1) is recorded.
When the nc column data is recorded and the final data of b(3x-1) is recorded, data recording for one track is completed.

Here, in the first column of the month included in DI, b (0)
, b (1), b (x), b (x+1).

6 data of b (2x), b (2x+1) (summer D
o to ID5) is data (hereinafter referred to as ID data) corresponding to additional information other than audio signal information.

By the way, in the multi-track digital audio tape recorder as described above, when performing so-called timer recording,
It is possible to provide a function for recording or reproducing by changing the track. This function is extremely useful because it enables continuous recording over a long period of time, and is especially useful when recording with a timer when setting multiple programs.

[Problem to be solved by the invention] While conventional recording devices can record for a long time,
In which track M' should each program be recorded during timer recording? ! You need to decide whether 1 is enough. Furthermore, when recording multiple programs with a timer, including a video signal recording program and an audio-only recording program, the tape cannot be used effectively if it is used in a wide time shift manner. There is a problem in that the operation becomes sloppy when the recording level is set.

The present invention has been made in order to solve such problems, and provides a recording device that reduces the complexity of operations by automatically determining the recording position of each program in a manner that enables effective use of the recording medium. The purpose is to

[To solve the problem] Record Sc2 according to this invention! is the length of the tape recording medium f
A program related to first information that is selectively recorded in any one area □ of a plurality of recording areas extending in the direction, and a program that is recorded simultaneously using at least two recording areas among the plurality of recording areas. When timer recording a plurality of programs including a program related to the second information, the means includes means for determining the recording position of each program, and the means determines the recording position of the program related to the simplified second information. 1
The recording position of the program related to the information is determined in advance.

[Operation] By configuring as described above, recording positions are determined sequentially starting from a program that uses many areas at the same time, so that the recording medium can be used effectively without any operation by the user.

[Embodiment] FIG. 1 is a diagram showing a schematic configuration of a tape recorder as an embodiment in which the present invention is applied to the tape recorder as described above. Components in FIG. 1 that are similar to those in FIGS. 5 and 6 are given the same numbers.

PG obtained from the rotation detector 11 of the rotating cylinder 2 is supplied to the cylinder motor control circuit 16, which rotates the cylinder 2 at a predetermined rotational speed and a predetermined rotational phase. 12.
13 is the flywheel 1 of the capstan 14 and 15 respectively
7.18 rotation detectors, the outputs (FG) of which are alternatively supplied to a capstan motor control circuit 20 via a switch 19. The output of the circuit 20 is supplied to each capstan motor via a switch 21 so that the capstan 14 or 15 rotates at a predetermined speed during recording. Switches 19 and 21 are connected to the F side in the figure when the tape is run in the direction shown by arrow 7 (forward direction), and to the R side in the figure when the tape is run in the direction shown by arrow 9 (reverse direction).

By manually operating the operating section 24.

An operation mode for recording, reproduction, etc., and an area to be recorded and reproduced are specified. Also, do you want to record only audio?
It is also specified whether the video signal is to be recorded using the recording pattern shown in Figure 6. Further, the track pitch and tape running direction during recording are also specified using this operation section 24.

Furthermore, if you wish to change the playback track as described above,
The changed track number, tape running direction, and track pitch can also be specified using the operating section 24.

These data are supplied to the system controller 25, which controls the capstan motor control circuit 20, the switch 19.21, the area designation circuit 26,
The gate circuit 27.10 controls the signal control circuit 51 and the like. Then, the area designation circuit 26 supplies the area designation data to the gate pulse generation circuit 23 to obtain a desired gate pulse. Incidentally, in the case where a video signal is also recorded, the designated area is naturally C) (1).

As the att gate pulse of the gate circuit 28, the head 3. The aforementioned window pulses are selectively supplied to each of the heads 4.

During recording, the analog audio signal input from the terminal 29 is supplied to the PCM audio signal processing circuit 30, sampled at the above-described timing related to the window pulse, converted into digital data, and then subjected to the above-described signal processing. In addition to this audio data, the aforementioned 10 data are also generated. The recording audio data obtained in this way is added to a tracking pilot signal (TPS) generated by the pilot signal generation circuit 32 in a rotation of f, → f2 → f3 → f4 for each field, and other pilot signals to be described later. Add x
be done. The w; force of mx:+s3s is appropriately gated as described above by the gate circuit 28, and written into a desired area by the head 3.4.

During playback, playback signals from the heads 3 and 4 are similarly extracted by the gate circuit 28 using window pulses, and this playback signal is passed through the A-side terminal of the switch 34 to a low-pass filter (
(LPF) 35 and is also supplied to a PCM audio signal processing circuit 30C. In the PCM audio signal processing circuit 39, error correction and time axis expansion are performed, contrary to recording.

Digital-analog change! ! ! ! etc., and a reproduced analog audio signal is output from the terminal 36.

The LPF 35 separates the aforementioned TPS and supplies it to the ATF circuit 37. The ATF circuit 37 is a circuit for obtaining a tracking error signal using a well-known four-frequency power formula, and uses a reproduced tracking pilot signal and a pilot signal generated by the pilot signal generation circuit 32 in the same rotation as during recording. It is well known that this is the case.

However, since a tracking error signal is obtained for each region, this is sampled and held. The tracking error signal thus obtained is supplied to the capstan motor control circuit 20, which controls the running of the tape 1 during playback via the capstans 14 and 15 to perform tracking control.

Next, the unit for recording and reproducing video signals will be explained.

When the system controller 25 issues a command to record and reproduce a video signal, the area designation circuit 26 is forced to
The HI region is designated and the gate circuit 27 is operated according to PG.

The video signal input from the terminal 38 is converted into a signal form suitable for recording by the video signal processing circuit 39, and is detected by the rX21.
40. Then, in addition 2I40, the signal is added to the pilot signal obtained from the pilot signal generation circuit 32, and recorded in the areas CH2 to CH6 by the head 3.4 via the gate circuit 27. The recording operation of the PCM audio signal at this time is exactly the same as the recording operation described above for CHI.

During playback, the video signal picked up from the head 3.4 is converted into a continuous signal via the gate circuit 27. This continuous signal is supplied to a video signal processing circuit 39,
The original signal form is output from the terminal 41. Also,
J! obtained from the gate circuit 27! ! ! The continuation signal is supplied to the LPF 35 via the V-side terminal of the forward signal switch 34.

The LPF 35 continuously separates pilot signal components and supplies them to the ATF circuit 37. At this time, ATF circuit 3
The tracing error signal obtained from 7 does not need to be sampled and held, and is supplied to the capstan motor control circuit 20 as it is. At this time, a PCM audio signal is also reproduced from the CHI area, and an analog audio reproduction signal is obtained from the terminal 36, but tracking control using the output signal of the gate circuit 28 is not performed.

FIG. 2 is a block diagram showing a specific example of the PCM audio signal processing circuit 30 in FIG. 1. In FIG. 2, lot is a terminal to which the input analog audio signal input to the terminal 29 is supplied, and 102 is a terminal ψ to which output data from the TD control circuit 51 is supplied. The parallel data supplied to this terminal 102 is supplied to a summer generation circuit 104, which generates serialized data at a predetermined timing.

On the other hand, an analog audio signal input to the terminal 101 is supplied to an analog-to-digital converter (A/D) 103. The A/D 103 samples the analog audio signal at a predetermined frequency, converts it into nine elements, and supplies it to the data selector 105 as serial data at a predetermined timing. The data selector 105 sends the ID data generator 10 to the ID data generator 10 at a timing corresponding to the IDI once every l field period.
4 output to RAM (random access memory) 107
and at other timings, the output of A/D I O3 is supplied to the RAM 107. The RAM 107 includes parity words (P, Q) obtained from the error correction circuit (ECC) 106, CRCC, etc., and the address controller 108.
Address data etc. obtained from the data selector 10 mentioned above.
The data obtained in step 5 are arranged so as to correspond to the data matrix shown in FIG. From the RAM 107, the time-base compressed data is supplied to the modulation circuit 109 in the above-mentioned order, and the modulation circuit 109 performs digital modulation such as BPM (pie, phase, modulation), and then outputs the data to the terminal I.
It is output via ll. The digitally modulated audio signal output from the terminal 111 is sent to the adder circuit 3 as described above.
3 will be supplied.

Next, the operation during playback will be explained. The digital modulation signal that has passed through the gate circuit 28 in FIG. 1 is digitally demodulated, and signal processing that is completely opposite to that during recording is performed. Also, the 8th
Each data in column 01 and column D2 of 1271 is stored in RAM l l
Output from 5, digital-to-analog conversion 2! (
D/A) 117. The data is supplied to the data reading circuit 118.

The D/Al 17 restores the original analog audio signal and outputs it from the terminal 36 in FIG. 1 via the terminal 119.

On the other hand, the data reading circuit 118 picks up the aforementioned ID data and supplies it to the ID detection circuit 52. It is assumed that the operations of each part of the PCM audio signal processing circuit shown in FIG. 2 are all synchronized by a timing signal generated by the timing controller 110.

The ID detection circuit 52 searches for ID data and supplies various information to the system controller 25. According to these data, the system controller 25 controls the area designation circuit 26 and the capstan control circuit 20.

Next, the timer operation according to the present invention will be explained.

First, a timer program is set using the operation unit 24. The timer device 60 stores the program contents in the memory 61.
Store in. The stored data items include, for example, program number, recording start date and time, recording end date and time, input channel, recording area number, and the like. It is conceivable that some of this information may not be directly input as data from the operation unit.

In addition, the recording area number has conventionally been determined and input by the user. In this embodiment, the recording area number is determined using an algorithm as explained in FIGS. 3 and 4. It is automated.

FIG. 3 is a flowchart showing the operation of the system controller when timer recording is performed in the apparatus shown in FIG. 1, and FIG. 4 is a flow chart for explaining the operation contents of FIG.
This is a JI diagram. The following will be explained along the lines of FIGS. 3 and 4.

First, set the start and end times for each program. In this state, turn on the timer recording switch and f
The tape counter is preferably of a real-time display type as much as possible, and the tape counter is reset to make the current tape position the reference position (step 2).

First, check whether a video signal program exists among the set programs (Step 3). If so, first sort the video signal programs in descending order of start time (Step 4), and then set the counter. The recording position l in the longitudinal direction of the tape-shaped recording medium is set sequentially from "zero" in the increasing direction (step 5).If this operation is completed first, then only the audio signal program will be used. All you need to do is set the .

The result is the same as when no video signal program is included. Then, as shown in FIG. 4(a), only audio signal programs are rearranged in descending order of program time from fI CHI to area CH6 (step 6).
Next, compare the number of programs and the number of areas (step 7).
If the number of programs is less than the number of areas, you can continue recording as is. If the number of programs is more than the number of areas, as shown in Figure 4(c), when all programs have been recorded, all programs The numbering programs that have the minimum maximum counter value during recording are arranged (step 8).

Information such as program time length and area number is 1.
For example, it is stored in the memory in the format shown in FIG. 4(b). Furthermore, information such as the area number and recording start position determined by such processing is also stored in the memory later in the form shown in FIG. 4(b).

Finally, check that the recording time is not reversed in each recording area. If it is reversed, recording can be performed sequentially along the tape signal as shown in Figure 4 (c) and (d). The program is replaced as shown in FIG. 9 (Step 9), and the recording track is determined (Step 1O).

Furthermore, the recording start position of the audio signal is memorized by subtracting the total time of the video signal program (step l).
After that, every time you execute one program of timer recording, you can always execute the first program by shifting the program number to a smaller number by one (
Step 12), and when the preparation for recording is completed, step 13) and recording are performed (step 14). When recording is complete, repeat the program content one step and press
Step 15), the next first program will be executed.

Furthermore, if a jump flag is set at the end of each program and the recording area number after area switching is recorded in this part, searching during playback becomes easier.

This jump flag is set to ``H'' when the recording area moves to the next area when the currently recorded program ends. Otherwise, rLJ is set when the next program is also recorded on the same channel. This is l-bit information such that Recording of this information may similarly be automatically performed by the system controller 25.

In this way, the timer device 60 sends a recording start command, a stop command, etc. to the system controller 25 based on the stored data. The system controller 25 receives these commands, controls the equipment, and performs timer recording.

[Effects of the Invention] As explained above, in the recording device of the present invention, the means for automatically determining the recording position of each program at the time of timer recording is a program related to the second information that simultaneously records two or more areas. Since the recording position is determined first, it is now possible to automatically perform timer recording that allows effective use of the recording medium.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a tape recorder as an embodiment of the present invention, FIG. 2 is a block diagram showing a specific example of the PCM audio signal processing circuit in FIG. 1, and FIG. 3 is one of the devices shown in FIG. FIG. 4 is an explanatory diagram for explaining the contents of each operation in FIG. 3, and FIG. 5 is a flowchart showing the operation of the system controller during timer recording by Yorai's digital audio tape recorder. FIG. 6 is a diagram showing a recording trajectory by a tape recorder having the tape running system shown in FIG. FIG. 8 is a data format recorded on one track of each area in FIG. In the figure. 1: Tape 2. Cylinder 3.4: Rotating head 24: Operating unit 25 System controller 26: Area specifying unit 30: PCM audio signal processing circuit 39: Video signal processing circuit

Claims (1)

[Claims] The first information is selectively recorded in any one of a plurality of recording areas extending in the longitudinal direction of a tape-shaped recording medium, and at least two of the plurality of recording areas are simultaneously used. A device for recording second information, the device comprising:
When timer recording a plurality of programs including a program related to the information and a program related to the second information, the device includes means for determining a recording position of each program, and the means is configured to record the program related to the second information. the first position
A recording device characterized in that a recording position of a program related to information is determined in advance.