JPS5971110A - Sub-code signal generator - Google Patents

Abstract

PURPOSE:To use display device group of plural digits in common as input display of catalog number, by providing modes such as marking, read, program save, program load and cutting. CONSTITUTION:After a video tape is brought into a prescribed state to be cut, a VTR110 is held into the pause state, the pause state of the VTR110 is released by operating a CUT key 206 and an START key 208, the cutting is started and the STOP key 209 is operated by the program end display for the cutting. In this case, the data in lead-in area is outputted by the operation of the START key 208 and then, the P.IN data is inputted from the VTR110, or the data in the program area is outputted by the operation of the START key 208, and when the data in the program area is finished finally, the data in the lead-out area is outputted.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a disc record master recording device suitable for, for example, a CD (optical compact disc) type DAD (digital audio disc), and particularly relates to a subcode signal thereof. Concerning improvements to generators.

[Technical background of the invention and points of interest]

Recently, in the field of audio equipment, digital recording and reproducing methods using PCM (pulse code modulation) technology are being adopted in order to achieve high-fidelity recording and reproducing as much as possible.

This is called digital audio, and it means that the audio characteristics are independent of the characteristics of the recording medium and are far superior to those using conventional analog recording and playback methods. This is because it has been established in principle.

In this case, a system that targets a disk (disk) as a recording medium is called a DAD system, and optical, electrostatic, and mechanical recording and reproducing methods have been proposed. Even when this method is adopted, the disk record master recording device that embodies the method is required to be able to satisfy various advanced functions and performances not found in conventional devices.

In other words, taking the CD system as an example, this supplementary DAD disc record yA disc recording device produces master discs for producing disc records to be used at the end, just like a normal disc record master recording device. In this case, it is not done by conventional cutting but by optical method using laser light.
It is necessary to encode in advance sub-code signals used for various displays and controls on a music signal that is a PCM-processed main code signal.

Here, there are eight types of subcode signals, P, Q, . . . , W, but currently two types, P signal and Q signal, are used.

Of these, the P signal is “0” during the song and “1” between songs.
Tonashi, and even if the song changes because there is no interval between songs, it will continue for a certain period of time ``''1
'', and "1#" and "0" are alternately repeated in the lead-out area after the final song.

In addition, the Q@ number indicates the sugar name (TNO: ) rack number of the song at the time it is being played (played)) an index that indicates the subdivision within the two songs (X) the elapsed time within the two songs, and the elapsed time from the beginning of the first song. It is something that can be offered even if the absolute time is spent.

In addition, this Q signal is generated in the lead-in area before the first song by a table of contents (Toe) that includes the absolute time, maximum and minimum number of songs, etc. for each recorded song.
It is provided for records.

This is used in combination with the P signal mentioned above to facilitate random searching of recorded songs.

To record on a master disk, generally speaking, a so-called PCM processor and a VTR (video recorder) are used to convert the music signal into PCM and record it on a VTR tape, and then the playback signal from this VTR tape is replayed. The PCM processor is used to derive a predetermined digital signal (main code signal), and the encoder outputs it to the PCM.
It is converted into No. 11 format such as the D format and used to control the radar output of the master recorder.

At this time, it is necessary to encode the subcode signal simultaneously with the fc main code signal as described above so that it is recorded on the master disc together with the music signal.

For this reason, conventionally, when playing a V'rR CHIF containing a music source, the start time of the song was measured in advance using a clock and inputted into a subcode generator before recording the master disc.
At the time of recording, the subcode generator is driven again to generate a subcode signal and encoded into the main code signal from the V'rR tape.

However, in such a subcode signal encoding system, the premise is to measure the start time of a song by listening to the music on a VTR tape, so in practice, the song by the subcode signal to be encoded is [Objective of the Invention] Therefore, this invention aims to address the above points. It is an object of the present invention to provide a subcode signal generating device which is improved so as to be able to accurately and easily generate a subcode signal to be encoded into a main code signal converted into PCM in advance.

[Summary of the invention]

That is, the subcode signal generator according to the present invention has the following features:
a first means for performing a marking mode for recording a desired marking signal corresponding to the main code signal at a predetermined position on an audio track of a videotape on which a PCM main code signal is recorded in advance on the video track; a second means for performing a read mode for reproducing the videotape on which the marking signal has been recorded by the first means and measuring the generation time of the reproduced marking signal; a third means for performing a program save mode for recording at the beginning of an audio track of a videotape; and a third means for reproducing the videotape on which measured time data is recorded by the third means, and performing the program on the basis of the reproduction measured time data. A fourth mode for executing a program load mode in which a subcode signal corresponding to the main code signal is generated and stored.
a fifth means for performing a cutting mode for transmitting the subcode signal generated and stored by the fourth means; and a zologram check for checking the subcode signal data generated and stored by the fourth means. catalog number/? in the read mode; It is characterized by being configured so that it can be used also for input display of -.

[Embodiments of the invention]

Hereinafter, a case in which the present invention is applied to a CD system will be described in detail as an embodiment of the present invention with reference to the drawings.

That is, in FIG. 1, reference numeral 110 indicates a commercial V'RA, and this VTR 110 has a video tape on which a music signal, which is to be the main code signal to be recorded, has been previously recorded as PCM in a predetermined format on its video track. Assume that it is loaded.

And the video output terminal (TI) of the above VTRJ JO
It is coupled to the main code signal input terminal (T2) of the encoder 112 via the PCM processor 111.

Further, 113 is a subcode signal generator, for example, tJ
f A control circuit 114 made of a microcomputer or the like, a key date 115 that supplies various control signals to the control circuit 114, a display 116 that displays various output signals from the control circuit 114, and the control circuit 11.
4 and the audio track recording input end (T3) and audio track playback output end (T3) of the VTRJJO.
4), and two input/output interfaces 117 and 11B interposed for connection with.

Here, the control circuit 114 includes a marking signal generating section 114 & which generates a marking signal, which will be described later, in response to a command from the key code 115, and a subcode signal which stores the data of the lumber generated as a subcode signal. A time measurement circuit section 114C that measures time based on the audio dosic playback output from the storage section 114b and the VTRJJO, and a time chart that creates a predetermined time chart to be described later based on the output from this time measurement circuit section. The above-mentioned TOC signal and P are generated based on the time chart created by the time chart creation section 114d.

It is configured to be able to generate subcode signals such as Q signals.

The subcode signal output terminal (T5) of the subcode generator 113 including such a control circuit 114 etc. is connected to the subcode signal input terminal (T6) of the encoder 112.
Combined with overlapping.

The encoder 112 is configured to encode the subcode signal into the main code signal and perform necessary encoding processing according to the CD format (e.g. EFM: Eight-Fourteen Monoversion). The master recording signal output end (T7) is the first
In the figure, it is assumed that the laser beam modulator is coupled to a laser beam modulation section of a master recorder (not shown).

To explain the operation of the above configuration, first it is necessary to perform a marking operation.

That is, although this marking is basically placed at the beginning and end of a song, it may also be placed at a break in the song when an index (X) signal is taken into account.

Also, markings are required to indicate the start and end points of a disc record.

These markings may be a single signal, for example, a sine wave signal of a constant frequency, but in consideration of ease of subsequent processing, it is preferable to use different signals.

Therefore, as a marking signal to be actually used, an ASCII code defined as follows, for example, may be FM-modulated and used.

■ Start point of disc play...A■ End point of disc play...River...B■ Start of song
......C Note that these marking signals are sent to the control circuit 1 in response to the key operation of the key date 115 attached to the subcode generator 113 for convenience of operability.
This signal is generated by the marking signal generating section 114a in 14.

The marking operation will be performed with the VTRJJO in the playback state, but in this case, the audio track of the video tape will be in the recording state (dub-recording).

- f, f) While playing back the VTftllO and listening to the music signal recorded as PCM on the video track of the videotape through the PCM processor 111 and on the monitor 119, operate the keyboard 115 to generate the necessary marking signals. The marking operation is performed by recording the information on the audio track of the videotape.

In this case, each marking signal, which is FM modulated using the ASCII code as described above and is generated from the marking signal generating section 114a in the control circuit 114 in response to a key operation of the - key 115, is sent to the input/output interface 117. The audio data will be recorded on the audio track of the videotape of the VTR 110 via the video tape.

When all marking operations are completed in the manner described above, the VTR 110 is placed in the playback state again and time measurement is performed. In this case, it goes without saying that the audio track of the videotape is in a playback state.

The audio track playback output (marking signal) from the VTRJJ (11) is sent to the time measurement circuit section 11 in the control circuit 114 via the input/output interface 118.
In step 4c, the time between each marking point from the starting point of the disk performance is measured.

Next, when the above-described time measurement operation is completed, the time chart creation section 114d in the control circuit 114 starts to create a time chart according to each marking.

Based on the time chart created here, the TOC signal that becomes the sashi code signal is generated, and the initial data for generating the P signal or Q signal is also set, and the data is stored in the storage section in the control circuit 114. It is something that will be remembered.

In this case, it is also possible to input data from outside as necessary.

With the above steps, the preparation operations for generating the subcode signal are completed, and then the master recording operation is finally performed.

Namely, i), the VTR 110't--is brought into the reproducing state again, and the sash code generator 113 first repeatedly generates the TOC signal. When the marking signal for starting a performance recorded in advance on the audio track of the VTR 110 is input to the sashi code generator 113, the sub-code generator 113 generates a sub-code signal pre-stored in the storage section 114b of the control circuit 114. P signal and Q as
A signal is generated (this also applies to the generation of the TOC signal described above).

In other words, the video output from the VTRJJO is PCM.
A predetermined desotal signal or main code signal is input to the encoder 112 via the processor 111, and at the same time, a necessary subcode signal is automatically generated from the subcode generator 113 and input to the encoder 112. By inputting the subcode signal to the main code signal, the subcode signal is encoded into the main code signal.

The encoder 112 then performs necessary encoding processing such as EFM and outputs a master recording signal.

By the way, as described above, it is possible to record a master disc in which a sash code signal is generated and encoded into a main code signal with an accurate and simple operation, and although it is effective, it is not possible to record a master disc. This is inconvenient because it is necessary to perform the above-mentioned operations each time.

This is because it is not possible to record the next master disc unless each of the above-mentioned operations except the first marking operation is repeatedly performed on the 91 volumes of videotape each time.

Therefore, in order to eliminate such inconvenience, it is necessary to create a time chart obtained in the time chart creation operation, which is the substantial final operation of generating a subcode signal in each operation for the first master recording described above. The data is pre-recorded at the beginning of the audio track of the videotape.This is also the area before the first marking signal is recorded (this is necessarily the recording area of the PCM music signal recorded on the video tape). It is sufficient to perform a time chart data recording operation to record the data in the previous part).

In this way, if time chart data is recorded in advance at the beginning of the audio track for one videotape, no matter how many times the master recording is performed, the time chart data can be recorded without having to perform the above-mentioned trough operation again. This is very convenient since it is possible to read the chart data and immediately generate the subcode signal necessary for master recording.

It should be noted that in the above-described marking operation, it is difficult to accurately mark a desired position, so that marking may sometimes be applied to an incorrect position. Further, even if it is possible to accurately mark a desired position, it may be necessary to change the position (particularly the starting position and ending position of the song) for some reason.

Therefore, in such a case, it would be convenient if the marking position could be corrected without having to restart the marking operation again.

Next, we will explain a marking correction operation that can meet such a request. First, the time chart data recorded at the beginning of the audio track on the videotape is read out and displayed on the display 116 to be corrected. good.

In this case, the time chart data is displayed as the measurement time of each marking point, so all you have to do is change the marking time and marking type to the desired one by pressing the key 115. It generates a sashicode signal based on the signal.

Next, a specific example of the subcode generator 113 in the above will be explained, but before that, an actual example of the subcode (particularly ptq) of the CD system will be explained.

■Frame structure The frame structure of the subcode is as shown in FIG. One sub-coding block includes 98 sub-coding symbols.

The repetition frequency of one block is 75 Hz.

The first two sub-code synchronization patterns are SO and 81 sub-code synchronization patterns.

■ Channel P Channel P is a flag pit indicating the start of a musical piece according to the sign rule below.

Musical tone p=.

Start Flag P=1 The minimum length of the encoded start flag in channel P is 2 seconds and the end of the encoded start flag gives the start of the next musical piece. If the actual nail length is greater than 2 seconds, the start flag length gives the actual nail length.

(2)-1 Lead Intrac Channel P in the lead intratrack is encoded as music. The first piece of music is led by a 2-3 second start flag.

-2 Lead Out Track The lead out track is led by a 2-3 second start flag (during the last musical piece on the disc). The end of the starting flag marks the beginning of the lead-out track. Channel P is 2-3 after the start of the lead-out track.
The second remains at zero, and the next P switches between 0 and 1 at a rhythm of 2H2±2% (duty ratio 50 x 10).

Channel P can only be changed after the sub-symbol synchronization patterns 80,81. The encoding of channel P is delayed by l subcode blocks with respect to the encoding of channel Q.

■ Channel Q The normal data format of channel Q is shown in Figure 3.
It is.

■-1 Control 2 Channel Number and Buri Emphasis 0
Sent MSB first with 4 flag bits for N10FF.

oooo... Indicates 2 audio channels without groove/emphasis.

1000: Indicates 4 audio channels without groove/emphasis.

xooi... Buri Emphasis 50/15μB 2
Or 4 audio channels. The Nori-En7 assist flag (pit 4 of the control block) can only be changed during the actual nailing of at least 2 seconds.

-2 address: MSB with 4 control bits for data Q
Sent from

(2)-3 data The MSB is always sent out first in linear 2-bit data.

-40RC: A set of 16-bit l-CRCs on control, address and data Q, sent MSB first. On the disk, the parity pits are inverted. The remainder is checked for zero.

Polynomial % Expression % ■ The following three modes are defined for data Q.

■ADR = 1 = (0001) mode 1 is 1 in -1 mode
Occupies at least 91 of 0 consecutive sub-code blocks. Two different data types are possible in mode 1. The data format during the lead intratrack is as shown in FIG.

The data format between the music and lead-out tracks on the disc is as shown in FIG.

TNO: Displays the music number in 2-digit BCD.

00・Engineering・Lead intratrack The end part of the lead intratrack is determined by the starting diameter of the log area.

01-99: Music number The musical piece is preceded by a nail with the same musical number.

Music number fj)il starts from the value of 01 and increases by j51. When one program is stored on several disks, the numbers are sequentially numbered.

AA: Lead-out Track The lead-out track begins at the end of the last piece of music on the disc without a leading nail symbol.

X: Express the table of contents of the music number in 2-digit BCD. Lead intratrack period table of contents X is not valid.

00: Coding of a nail The coding of a nail in channel Q gives a nail length that indicates ``the music is currently being played'' by 1°. first piece of music piece
The strip is led by a nail sign for 2-3 seconds (see channel P). The lead-out track is encoded as a musical tone.

01-99: Sub-division number lead-out track period X is 01° musical tone piece (TNO
= 01~99, the first value of X in X(OO) is O
It becomes l. The value of X can only increase by one.

ZEZO: These 8 bits are zero.

MIN, SEC, FRAME: The running time in a musical piece is expressed in 6-digit BCD. That is, MIN
.

8EC and FRAME are 2 digits each. When the music starts, the time is set to zero. Time increases during the duration of the music and ends with a value of zero at the end of the music.

The lead-in and lead-out track opening times will increase. The minutes are stored in MIN and the seconds are stored in SEC. 1
Seconds are subdivided into 75 frames (running from 00 to 74). AMIN, ASEC, AFRAME: The running time of the disc is represented by a 6-digit BCD. AMIN,
ASEC and AFRAME each have two digits. At the starting diameter position of the program area, the travel time is set to zero and T
The value of the first music on the disc is entered in NO.

The minutes are stored in AMIN and the seconds are stored in ASEC.

1 second is subdivided into 75 frames (running from 00 to 74) POINT, PMIN, PSEC, PFRAM
E: During the REIT track, Table 1 shows that the contents are stored in these locations. The contents of this table are
Continuously repeats 9 times during the lead-in area (TNO=00)
returned. Within each table, the entries are scrolled three times.

At the end of the lead-in area, the contents of the table can be ended with any POINT value.

PMINSP8EC and PFR positions give the music number starting point indicated by POINT. These values determine the starting position of the music in viscous time (AMIN, ASEC) with an accuracy of 1 second.
and AFRA+ε). The starting position of the music is the first position of the new music number, which is X (OO. If POIN
If T = AO, the value of PMIN gives the first TNO on the disk, and PSEC and PFRAIyIE are zero.

If POINT = AI, then the value of PMIN is the last TNOf on the disk, given that PSge and PFR are zero. If POINT = A 2, then PMIN
.

psgc and PFRAME give the starting position of the p1 leadout track.

Table 1 gives an example of encoding when six songs are included on one disc.

-2Mo)'2:ADR=2=(0010) If mode 2 is presented, it occupies at least one of the 1oo consecutive sub-code blocks. The data format in mode 2 is as shown in FIG.

N1 to N13: Disc catalog number expressed in 13-digit BCD. UPC/EAR code (BAR encoding) is used. The catalog number (number) does not change on the disc. If there is no catalog number encoded based on UPC/EAN code, N1-N13 can be all zero or mode 2 can be deleted from the disc.

ZERO: These 12 bits are zero AFR: Continuation of AFR reading in mode 1 (two-digit BCD running from 00 to 74). During the lead-in area (TNO=00), these 8 bits are zero.

-3 Mode 3: ADR=3=(0011) If mode 3 is presented, it occupies at least one of 100 consecutive blocks.

Mode 3 is used to give unique numbers to musical pieces. This is done using l5RC (International Standard Record Code). 15RC is determined by DIN-31-621. If ISR codes are not used, mode 3 must be deleted.

Mode 3 for lead-in and lead-out tracks does not exist on the disc. The ISR code can only be changed immediately after the TNO is changed.

The data format in mode 3 is as shown in FIG.

The 12 characters of the l5RC code are provided by 11-112. The country code is given by 11~■2, I3
~15 gives the owner code, I6~I7 are the record year, and I8~112 are the record's serial number.

Characters 11 to 5 are encoded in 6-bit format according to the table below. The digits I6 to 112 are the number of 4-pit 0BCD.

00: These 2 bits are zero ZERO: These 4 bits are zero AFRAME: Continuation of AFRAME in %-Dollar (2-digit BCD running from 00 to 74). During the lead-in area (TNO=00), these 8 bits are zero.

-y-a, channels RSS, T, U, VSW These channels are zero, no other data is allowed to be written into these locations.

FIG. 8 shows an example of the timing relationship of the P and Q signals on the disc in the above.Next, a concrete example of the subcode generator 113 in the above will be explained.

That is, FIG. 9 shows a panel layout diagram of the sub-code generator 113, in which the aforementioned keys have an operation key portion 200 corresponding to the one hand 115 and a display section 300 corresponding to the display 116. ing.

In this case, the operation keys 2oo are P, 1. ”J key
201, M, H [il: AD key 202, M,
CHANG.

Key 203, INDEX? -204,P,OUT
Key 2.05. M, END key 206I) outside, V
ERI floor-207, 5TART key 2o 8, 5T
OP key 209° and O~ with display at the bottom of the illustration
9 number keys 210, 211, 212 (however, the above 201 to 207 are also used for θ to 6) and the mode designation MARK having a display on the keys themselves that are used as the 1 to 6 number keys 202 to 207. Key.

READ key, 5AVE-IP-, LOAD key, CUT key.

It includes the CHECK key, the 5TEP key and the ENTER key, which are displayed in the lower part of the figure, where the above 208 and 209 are also used.

In addition, the operation key part 200 has light emitting diodes (LEDs) as KYE MODE indicators in the upper and lower parts of the diagram.
1. 2 LEDs are attached.

The display unit 300 is a 7-segment light emitting diode displaying a 2-digit MOD display in the upper part of the figure.
E display 30 J, TNO display 302, index (X) display 303, MIN display 304,
SEC display 305, A, MIN display 306
, A, SEC display 307 and single digit A, FRAl
vlLEi display 308 and N1-N13, which have a display in the lower part of the figure and are shared by the above-mentioned displays 302 to 308.
(Catalog Nannogu-) CATALOGNUMBE
It has an R indicator.

Note that there is a MUS between the operation section 200 and the display section 300.
Light emitting diodes LEDs and LED 4 are attached as IC and LED-input D-IN indicators.

First, the usage format and display format of each of the above-mentioned operation keys and indicators will be explained.

[: P, IN key 201] This is the key operated at the beginning of the program area.

(M, HEAD key 202) This is the key operated at the beginning of the song.

[M, CHANG, key 203] This key is operated when changing songs without any pauses.

[INDEX key 204] This is a key operated when incrementing the index (X).

[P, OUT key 205] This key is operated when entering the lead-out area at the end of the program area.

[:M, END key 206] This is the key operated at the end of the song.

(VERIFY key zo y) Operated in program save mode to compare the saved program information with the program information stored in the subcode generator and check whether it has been recorded accurately. This is the key.

(5TART key 208) This key is operated to start each of the read mode, program save mode, program load mode, and cutting mode.

[5TOP key 209] This key is operated to stop processing and wait for mode designation in read mode, program save mode, program load mode, and cutting mode.

[θ~9 number keys 201~2ov, zlo-, tlz
) TNO and Q signal mod of the first song in read mode
This key is operated when inputting data of e-2 and when inputting numbers in program check (change) mode.

(5TEP key 208) Read and check or change the program information written in advance when inputting the TNO of the first song in the read mode, ! = mode -2 data of the Q signal and during the program check (change) mode. This is the key that is operated when

(ENTER key 209) TNO and Q signal mo of the first song in read mode
This key is operated to move the cursor (decimal point) one character to the right when inputting de -2 data and in program change mode.

Note that operations for setting each of the above-mentioned modes will be described later.

(MODE display 301) Displays each operation mode using numbers and alphabets. The 13 types of alphabets (
a), (b), (c), (d), (e
) v (f), (h).

(1) , (j) , (A , (p) , (u
), (Q) are displayed in the form shown in FIG.

[TNO, X, MIN, SEC, A, MIN
, A. SEC.

A, FRAME display 302 to 308] Track number (TNO) is displayed in read mode, cutting mode, and program check (change) mode, respectively.
, index (a).

Minutes and 2 seconds of song time (MIN), (SEC), Minutes and 2 seconds of absolute time from the beginning of the first song (A, MIN), (A,
1C), which also displays the absolute frame (A, FRAME) numerically.

[CATLOG NTJKBER display 302-308
] This is displayed when inputting the catalog number of mode -2 of the Q signal in the read mode.

(MUSIC display LED 3) Lights up when in the zologram area, except in cutting mode.

(LEAD-IN indicator LED 4) Lights up when in the lead-in area during cutting mode.

[KEY-MODE indicator LED 1, LED
2) Lights up depending on which of the above-mentioned operation keys is in the lower or lower operation state.

Note that in the above, each operation mode is defined as follows.

[Marking (MARK) mode]

This mode is used to mark the beginning of a song on the Video Teso audio track.

[READ mode]

This mode creates data necessary for generating a subcode (EFM) signal from a marking signal recorded on an audio track of a videotape.

[Program save (SAVE) mode] Subcode (
This is a mode in which the data necessary to generate the gFM) signal is recorded at the beginning of the audio track of the videotape.

[Zologram load (LOAD) mode] This is a mode for reading data recorded at the beginning of the audio track of a videotape in the glogram seso mode.

[Cutting (CUT, ) mode]

The subcode (EFM) signal generation mode, in other words, generates the subcode signal to be encoded into the main code signal as described above, and then allows the encoder to perform the necessary encoding processing, thereby generating the master recording signal. This is the mode for deriving.

[Program check (CHECK) (change) mode] This is a mode for checking and changing the time at the beginning of a song, etc., which is necessary before generating a fill chord (EFM) signal.

Next, the actual operation of each operation mode will be explained based on a flowchart.

First, as shown in Fig. 11, by turning on the power, the system enters the mode specification waiting state (however, this state is also designed so that it always returns temporarily to this state even when each operation described later is completed. ) The system enters standby mode.

The mode specification from the standby state is 1 to
This is done by selectively operating operation keys for specifying each mode, which also serve as the number keys 202-206.

In this case, the correspondence between the numerical keys 1 to 6 displayed on the MODE display 301 and the mode designation is as follows.

1...Marking (MARK,) mode 2-...Read (READ) mode 3...Program save (SAVE) mode 4...
Program load (LOAD) - [Need 5...Cutting (CUT,) mode 6...Program check (change) (CHECK) mode - And the first specified is 'Marking (MARK,) mode)'. ashi, followed by P and IN which should be operated in marking mode.
, M,HEAD ,M,CHANGE.

The marking operation is performed by operating each of the INDEX, P, OUT, M, and END operation keys 201 to 206 in accordance with the relational check diagram shown in FIG. 12, for example.

The M and END keys 206 operated at the end of the song are
If the P and OUT keys 205 are operated within 10 seconds after the relevant key 206 is pressed, the P and OUT keys 205 will be operated.
It is assumed that the operation is interpreted as the operation of the T key 205 and the operation of the P and OUT keys 205 is ignored. however,
This is between the M, END key and P, OUT key operations.
, H and Φ keys, M, and CI (ANGE keys) are excluded.

Also, the operations of the M and END keys before M and HEADO can be omitted, but in this case, M and END are M,
It is processed as being, for example, 3 seconds before HEAD.

Here, if the M, END key, M, HEAD key is pressed intermittently at a relatively fast cycle, Fig. 13(a), Φ
), in the former case, if the intermittent operation time is less than 7 seconds, the last one will be accepted, and in the latter case, if the total time of the intermittent operation is less than 10 seconds, for example, the earliest one will be accepted.

If you want to end (including cancel) the 1 making operation, you can operate the 5TOP key 209 to enter the standby state described above.

Furthermore, the M, f (EAD) key operations after P, IN may be omitted; in that case, it is assumed that M, HEAD is present 3 seconds after P, IN. shall be.

In addition, in the flowchart of FIG. 11, M shown on the right side
The ODE display 301 shows examples of display forms taken in each state (the same applies below).

Next, as shown in Figure 14, the READ mode is specified, and this is the marking mode that reads the marking signal to the video chip and creates lead-in information (TOC data) and program information. It is meant to be done.

Therefore, it goes without saying that it is necessary to rewind the video chip to the first marking section before this.

Then, the TNO (usually 1) of the first song is entered by operating the numeric keys, and the TNO can be entered as follows.

For example, to enter "16#" as the TNO, first press the number key 11, then press the ENTER key, and finally press the number key "6". During this time, the TNO display 302 will display The form is shown in Figure 15 (&) t
As shown in (b) and (e).

If you enter the wrong number, press ENTER key 209
Press to return the cursor (decimal point) to the upper digit, then press the correct number key.

When the TNO data input is completed, next operate the 5TEP key 208 to enter a state in which the catalog number can be input, and enter a 13-digit catalog number in the same manner as the TNOO entry described above.

When the catalog number input is completed in this way, operate the S TEP key 20B again (if the catalog number is 1o", immediately enter the 5TE key).
(You can do this by operating the P key 20B.) In particular, the mode is set so that the previously marked marking data can be read.

This mode is shown in FIG.
All you have to do is operate the m-shaped key 208 while playing TRI JO.

When the reading is finished, operate the 5TOP key 209 (the same applies if you want to cancel).

If a reading error message (2E) is displayed during this time, all you have to do is rewind the VTR 110 and try again.

Also, syntax errors due to mark mistakes (2d
), operate the 5TOP key 209't- to enter the mode standby state, and then use the program change mode to be described later to make corrections, or enter the marking mode again and slightly correct the marking.

Next, as shown in FIG.
E) mode, but in this case, the video clip is also rewound to the part marked before the 2-minute root.

Then, with the VTR 110 in the post-recording state, 5TART
Operate the key 208 to enter the writing state, and when the writing is completed, rewind the videotape to the part before writing, and then enter the play state and verify (VERIFY).
I'll do it as a mode.

By doing this, the reading will be performed and the reading completion will be displayed (3F).
When appears, stop VTRI JO and turn 5T.
Operate the OP key 209.

In this case, if a reading error message (3E) is displayed, you can simply repeat the operation from the beginning.

Next, a case will be described in which a program load (LOAD) mode for reading data as shown in FIG. 18 is used.

In this case, the video tape is set in advance at the portion before the above writing, and then the VTR J J o is set to a gray state and the 5TART key 2011f is operated.

As a result, when the program is loaded and the load completion display is displayed, the VTRI JO is stopped and the 5TOP key 209 is operated.

In addition, if a reading error message (4E) is displayed during this time,
Just try the operation again.

Next, a case will be described in which the program check (CHECK) (change) mode for data checking as shown in FIG. 19 is used.

This is done by operating the 5TEP key 208 without checking the data, and if there is anything that needs to be changed during this time,
This can be done using the program change mode described later.

In other words, this program check (CHECK) <
Change) mode is program data 5TEP key 208
Each time the button is pressed, one state (one command) is displayed, and the program data can be changed as necessary.

Figure 20 (,) to (h) are the above-mentioned 5TEP keys 20B.
This shows a display example of each data displayed by the operation.

If you wish to make any changes, please refer to Figure 21 (,), (b).
.

As shown in (C), use the ENTER key 209 to move the cursor (decimal point) to the part to be changed and press the number key to be changed (the figure shows M, when the HEAD time is delayed by 3 seconds) (A) shows an example in which 1000 seconds is changed to 11 seconds) 0 Next, the case of setting the cutting (CUT) mode as shown in FIG. 22 will be described.

In this case, after setting the videotape in a predetermined state for cutting, hold the VTRJ 10 in a pause state, operate the CUT key 206, 5 and the TART key 208, and then release the pause state of the VTRI JO. All you have to do is start cutting and operate the 5TOP key 209 when the end of the nologram for cutting is displayed.

In this case, first, the data in the series lead-in area is output by operating the 5TART key 208, and then the VTRJJ
, 0 yo j5 P, IN data enters or S TA
When the RT key 208 is operated, the data in the program area is output, and finally, when the data in the program area is finished, the data in the lead-out area is output. MUSIC indicator LED3. The display state of the LEAD-IN indicator LED 4 is as shown in FIG.

In addition, in Fig. 20, (f) is M, CHANG, 0
2 seconds ago and M, END and M, ) This is the display that appears when the IEAD interval is smaller than 2 seconds. Similarly, in Fig. 20, the error display (6d) in (G)) is ignored during cutting, but in other cases this display (6d) is ignored.
2d) indicates that what was marked at that time is a syntax error, so it is best to correct it by considering the context.

Next, matters that can contribute to simplifying the configuration of the specific example described above will be described.

First, regarding the 200 operation keys, some of the operation keys are P and IN keys 201, which are used in the marking (MARK) mode and have a display in the upper part of the figure.
, M, HEAD key 202, M, CHANG key zos, INDEX key 204, P, O
UT key 205゜M, END key 206 and V used in program save (SA'Vg) mode.
The ERI F'Y key 207 is (0) among the numeric keys displayed in the lower part of the diagram used in read mode and program check (CHECK) (change) mode.
- (6) MARK that is also used correspondingly to the number keys and has a display on the key itself used when specifying the mode
Key.

RIiAD key, 3AVE ghee, 1. OAD key,
Since it is also used as the CUT key (however, the P and IN keys 201 are excluded), the number of keys required as a whole is significantly reduced, reducing costs and improving the space factor of 4 channels. In order to ensure that these three types can be used interchangeably, that is, used properly, key modes are provided in the upper and lower parts of the diagram to indicate which side the key is in the operated state. Light emitting diode LED for display
, etc. is provided.

As for the key operations for specifying modes, these keys themselves have a display, and since they are operated at the beginning of each mode, we deliberately display the operation status of these keys. A display is not attached to this part, and a MODE display 301 is separately provided on the display section 300 so that each mode can be displayed and a display according to the progress state in each mode can be made. Another distinctive feature is that each mode and the progress status of each mode can be displayed on the same display.

The block and MODD display 301 each consist of a 2-digit display made of 7-segment light emitting diodes,
Its one-digit display displays the mode number (1) to (6) corresponding to the operation of the mode designation key, and the other one digit is the number (1) to (6) above. Alphabet (a) corresponding to the progress status of each mode
, 佽) s (c) , (dJt("L(') , (h
) , (') , (j) p (') , (p) −(
u) and (o) (however, the actual display format is the same as described above), each mode and the progress status of each mode can be displayed in the same manner by changing the display format. However, if this configuration were not adopted, the number of display devices corresponding to the number of modes and the number of progress states for each mode would have to be provided. This is because the number of required bottom water volumes can be significantly reduced, contributing to cost reduction and improvement of panel space 7 actors.

In addition, regarding the operation key part 200, 5TART key 2
0 B, 5 TOP key 209, and a step (STEP) key and an ENT key that are also used
The ER) key is configured to be able to be used isometrically in two modes: read mode and zologram check (change) mode. This allows you to modify the TNO and Q signal mods of the first song in read mode.
The function of inputting (including correction) the e-2 data and the function of reading and checking or changing the program information pre-programmed in zologram check (Kasara) mode can be rationally performed using the same key. It is possible to reduce the number of keys required, reducing costs and improving the panel space factor, compared to providing these keys separately for read mode and program check (change) mode. As for the display section SOO, each 2-digit TNO display 302. is made of 7-segment light emitting diodes and has a display in the upper part of the figure. Inf”yx (X) indicator 3
03. SEC display 304°A, MIN display 305
, A, SEC display 306 and single digit A, ER
The AME indicator 307 has a display in the lower part of the figure.
By being used as a cataloger/79-display for 1 to Nts, it can significantly reduce the overall number of displays required, contributing to cost reduction and an improvement in the panel space factor. There are several points.

In this case, the MODE display 301 cannot be used for both the read mode and the catalog number input (display) state, but each of the remaining displays 301 to 307 for displaying program information It is important that the catalog number, which requires display of digits, be displayed in just the right amount.

Next, a description will be given of matters that can contribute to improving the operability and ensuring reliable operation for each operation mode, which were similarly implemented in the specific example.

First, in the marking mode, the M and END keys 206, which are operated at the end of the song, are pressed and the P and OUT keys 205 are pressed within a predetermined time, for example 10 seconds.
If the key 206 is operated, the operation of the corresponding key 206 is interpreted as an operation of the P, OUT key 205, and the operation of the P, 0 IJT key 205 is ignored.

In other words, operating the p, P, and OσT keys 205 is to specify that the program area will end and the program will enter the lead-out area without changing anything.
The P and OUT keys 205 should originally be operated at the end of the last song. However, since he happened to operate the M and END keys 206 assuming that there was a next song, and then operated the P and OUT keys 205 again after a predetermined time (within 10 seconds), this meant that the original program area had ended. When the END key 206 is pressed, it is the time to enter the lead-out area.
This means that it is assumed that the OUT key 205 has been operated.

Thereby, there is no need to perform the operation again, and this can contribute to simplifying the operation and ensuring the operation.

In addition, by processing M, END before M, HgADO as if it was a predetermined time, for example, 3 seconds ago, υ, M, 1 (M, END before HAD can be omitted, and that is all. One of the points is that it is easier to operate.

Then, when the M, END key, M, f (EAD key) are operated intermittently at a relatively fast cycle, the former will accept the last one if the intermittent interval is less than a predetermined time, e.g. 7 seconds, and the latter will accept the intermittent If the total operation time is less than a predetermined time, for example, 10 seconds, the earliest one can be accepted, thereby ensuring reliable operation.

Furthermore, by processing M and HIDAD of the first song as if they were a predetermined time after P and IN, for example 3 seconds, M and f (EAD key operation after P and IN) The point is that it is possible to omit it, which simplifies the operation.

In addition, P and IN were adopted as marking signals.

M, HEAD, M, C output G,, I immediate EX,
It is also important that books P, OUT, M, and E use FM-modulated ASCII codes that are coded as different signals for ease of later processing, as mentioned above. .

Second, since the system is equipped with a function to check saved data in the VERIFY mode during the program save mode, the reliability of the operation is ensured.

In addition, in the program check (CHECK) (change) mode, each time the 5TEP key 20B is operated, the programmed data can be displayed and checked one state at a time, ensuring reliable operation. One point is that the gender is guaranteed.

If there is any data that you would like to change during this check, you can easily change the program data by pressing the ENTFR key 209 to move the kernel to the part that needs to be changed and then operating all the numeric keys that need to be changed. It is also important that it is done in such a way that it can be obtained.

Furthermore, since syntax errors (2d) due to mark mistakes can be displayed in the READ mode, reliability of operation is ensured.

Similarly, read error display in read mode (2F),
Since the write error display (3E) in verify mode and the read error display (4E) in program load mode are displayed separately, the reliability of operation in each mode is improved. One point is that it is ensured that the

If any of these steps 2 - especially syntax error display (2d) occurs, the error can be easily corrected by using the program check mode described above. Points are also important.

Furthermore, in the cutting (CUT, ) mode,
First, the data in the serial in area is output by operating the 5TART key 208, and then the data in the series input area is output from VTRI J O to P.
- Data in the program area is output when IN data is input or the 5TART key 208 is operated, and finally, when data in the program area is finished, data in the lead-out area is output. The advantages are that it is simple and reliable.

In addition, by providing each of the above-mentioned modes, that is, marking mode, read mode, program save mode, glodarum load mode, and cutting mode, it not only simplifies operation and improves reliability, but also provides a series of modes. It is also important that a highly functional and highly desirable subcode signal generator can be realized by organic combination of the subcode signal generator and the subcode signal generator.

It goes without saying that the present invention is not limited to the embodiments described above and illustrated, and that various modifications and applications can be made without departing from the gist of the invention.

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, P
It becomes possible to provide an improved sash code signal generation device that can accurately generate all subcode signals to be encoded into a CM main code signal with simple operations.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, FIGS. 2 to 8 are diagrams for explaining examples of subcodes used in FIG. 1, and FIGS. It is a diagram for explaining a specific example of the diagram. I J O・VTR, J J 1 ・PCMfO, S, 112... Encoder, 113... Sashi code signal generator, 114... Control circuit, 115... Key is one hand, 116... Display device, 117.118... Input/output interface, 114m... Marking signal generation section, 114b... Subcode signal storage section, 114C
...Time measurement circuit section, 114d...Time chart creation section, 200...Part of operation keys, SOO...Display section, 201...P, IN key, 202...M, HE
AD key, 203...M, CHANG, key, 20
4...INDEX key, 205...P, OUT key, 206...M, END key, 207...VE
RIFY key, 208...5 TART key, 209...
...5TOP key, 200-212...Numeric key, 2
02...MARK key, 203...RgA key, 2
04...S AVE key, 205...LOAD key, 206...CUT. Key, 207...CI (ECK key, 2oh...S
'rgp key, 209...ENTER key, 301...
...MODE display bottom water 02...TNO display, 30
3...index) indicator, 304...MIN
Display device, 305...SaC display device, 306...A, MI
N display, 307...k, 8Ec display, 308...
・A, FRAME display, 302K. 308...Catalog number display, LEJ. LED 2...KEY MOI)g indicator, IJD
a: Mower SIC indicator, LED4: Lead-in indicator. Applicant's Representative Patent Attorney Takehiko Suzue Figure 14 Figure 16 Figure 15 Figure 147- JP-A-59-71110 (20) Figure 18

Claims (1)

[Claims] a first means for recording a marking signal for recording a desired marking signal corresponding to the main code signal at a predetermined position on an audio track of a video chip in which a PCM main code signal is recorded in advance on the video track; a second means for performing a read mode for reproducing the videotape on which the marking signal has been recorded by the first means and measuring the generation time of the reproduced marking signal; a third means for performing a program save mode for recording at the beginning of an audio track of a videotape; and a third means for reproducing the videotape on which the measured time data is recorded, and performing the program saving mode based on the reproduction measured time data. A fourth module executes a glogram load mode in which a subcode signal corresponding to the main code signal is generated and stored.
a fifth means for performing a cutting mode for transmitting the subcode signal generated and stored by the fourth means; and a gram check for checking the subcode signal data generated and stored by the fourth means. and a sixth means for performing the read mode, wherein the fifth means provides a multi-digit display group for displaying subcode signal data for checking and reading, for inputting and displaying the catalog number in the read mode. A subcode signal generator characterized in that it is configured so that it can be used for both purposes.