JPS5972632A - Sub-code signal generator - Google Patents

Abstract

PURPOSE:To generate easily and surely a sub-code for main code encoding, by displaying a syntax in error mode at the read mode, and correcting an error by the program check mode. CONSTITUTION:In operating a key 203 of an operating section 200 of a keyboard of a sub-code generator, the read mode is designated, a marking signal recorded in response to the main code is read out on a VTR tape at the marking mode, the marking generating time is measured and the sub-code forming time chart is formed. When the syntax is in error mode due to marking mistake, then the syntax is in error state is displayed on a mode display section 301 of a display section 300. In operating the key 207 based on this display and selecting the program check mode, the mark error is corrected and the sub-code for main code encoding is generated easily and surely.

Description

DETAILED DESCRIPTION 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 an improvement of a subcode signal generating device thereof. .

[Technical background of the invention and its problems]

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

11. This is called digital audio, and the audio characteristics do not depend on 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 device that uses a disk as a recording medium is called a DAD synutem, and various recording and reproducing methods have been proposed, such as optical, electrostatic, and mechanical. 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 type of DAD disk record master recording device produces a master disk for mass production of disk records used at the end, just like a normal disk 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 subcode signals used for various displays and controls in advance with respect to the music signal which becomes the main code signal after CM processing.

Here, there are eight types of subcode signals: P, Q...wt, 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.
``And there is no interval between songs, even if the songs change, there will be 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 signal displays the number (TNO: rack number) of the song at the time it is being played (played), the index that indicates subdivisions within the song, the elapsed time within the song, and the absolute time from the beginning of the first song. It is provided for the purpose of

In addition, the Q signal is a table op content (TOC) that includes the absolute time and maximum and minimum number of songs for each recorded song in the lead-in area before the first song.
This is used to record songs, and together with the above-mentioned P signal, it is used to facilitate random searches of recorded songs.

To record on a master disc, generally speaking, a so-called PCM processor and a VTR (video tape 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 recorded. is passed through the PCM processor again to produce a predetermined digital signal (
It is used to control the laser output of the master recorder by converting it into a signal format such as the 9CD system using an encoder.

At this time, it is necessary to simultaneously encode the sub-code signal with respect to the above-mentioned main code signal so that it is recorded on the master disc together with the music signal.

For this reason, conventionally, when playing back the entire VTR tape containing the music source, the starting time of the song was measured in advance using a clock and inputted into a subcode generator before recording the master, and a subcode was generated again at the time of recording. By driving the VTR tape, a system code signal was generated and encoded into the main code signal from the VTR tape.

However, in such a subcode signal encoding system, the premise is to listen to the music on the V'TR tape and measure the entire time from the beginning of the song, so in practice the subcode signal to be encoded is However, the beginning time of a song tends to be inaccurate, and the operations are very complicated.

[Purpose of the invention]

Therefore, the present invention has been made in view of the above points, and provides an improved subcode signal that can accurately and easily generate a subcode signal to be encoded into a main code signal that has been converted into PCM in advance. The purpose is to provide a generator.

[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 full read mode for reproducing the videotape on which the marking signal has been recorded by the first means and measuring the entire 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 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 70 program checker for checking the subcode signal data generated and stored by the fourth means. , a sixth means for executing the program check mode, and is configured to be able to fully display a syntax error state due to a mark mistake in the read mode, and to enable error correction as the program check mode. It is a feature.

[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 is a commercial VTR, and in this VTRJ 1o, a music signal, which is a main code signal to be recorded, is previously recorded in a PCM format on its video track in a predetermined format. Assume that a videotape is loaded.

Then, the video output terminal TI of the VTR 110 is connected to the PCM
It is coupled via the processor 111 to the main code signal input T2 of the encoder 112.

Further, 113 is a subcode signal generator, which includes a control circuit 114 made of, for example, a microcomputer, a keyboard 115 that supplies various control signals to this control circuit 114, and various output signals from the control circuit 114. A display 116 for full display, the control circuit 114, and an audio track recording input terminal T3 of the VTR 110.
and two input/output interfaces 117 for connection with the audio track playback output terminal T4.
118.

Here, the control circuit 114 selects the key yj? -Do 1
15, a marking signal generating section 114a that generates a marking signal, which will be described later, and a subcode signal storage section 114b that stores various data generated as subcode signals, and an audio track reproduction output from the VTR 110. It has a time measurement circuit section 114c that measures time using the time measurement circuit section 114c, and a time chart creation section 114d that creates a predetermined time chart, which will be described later, based on the output from this time measurement circuit section. It is configured to be able to generate subcode signals such as the TOC signal and P and Q signals described above based on the time chart.

A sag code signal output terminal T5 of the subcode generator 113 including such a control circuit 114 and the like is coupled to a subcode signal input terminal T6 of the encoder 112.

The encoder 112 encodes the subcode signal into the main code signal, and also encodes the subcode signal into the main code signal.
It is configured to perform necessary encoding processing (for example, EFM: eight-fourteen modulation) according to K, and one of its master recording signal output terminals is a laser beam modulation section of the master recorder (not shown in Fig. 1). shall be connected to.

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

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

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

For this reason, the actual marking signal to be used is the Anuki code, for example, the one defined as below, which is iFM modulated.
・・・・・・・・・・・・A■ Disc performance end point...song...listen B■ Start of song......
・・・・・・・・・・・・・・・・A key attached to the subcode generator 113 for C benefit? The marking signal generator 114a in the control circuit 114 generates a marking signal in response to a key operation on the - code 115.

The marking operation will be performed with the VTRI 10 f in the playback state, but in this case, the audio track of the videotape will be in the recording state (dubbing).

In other words, the music signal i PCM that is played back by the VTR 110 and recorded as PCM on the video track of the video tape.
The marking operation is performed by operating the keyboard 115 to record a necessary marking signal on the audio track of the videotape while listening to the video on the monitor 119 through the processor 111.

In this case, each marking signal FM-modulated using the above-mentioned ASCII code is generated from the marking signal generator 114a in the control circuit 114 in response to key operations on the keyboard 115 and is transmitted to the VTR 111 via the input interface 117. This is what is recorded on the audio track on the videotape.

When all the marking operations are completed as described above, the VTR 110f returns to the playback state and makes all the time measurement operation sounds. In this case, it goes without saying that the audio track of the videotape is in a playback state.

In other words, the audio track playback output (marking signal) from the VTR 110 is sent to the time measurement circuit section 114C in the control circuit 114 via the total input/output interface 118, and the time measurement circuit 114C receives the reading υ, the time between each marking point from the start point of the disc playback. It is something to be 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.

That is, based on the time chart created here, the TOC signal that becomes the subcode signal is generated, and the initial data for generating the P signal or Q@ signal is also set, and the storage section in the control circuit 114 This is what will be remembered.

In this case, it is also possible to input external data if necessary.

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

f), to put the VTRll0 into the playback state again,
First, the subcode generator 113 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 subcode generator 113, the subcode generator 113 generates a A P signal and a Q signal as code signals are generated (this also applies to the generation of the TOC signal).

That is, the video output from the VTR 110 is input to the encoder 112 as a predetermined digital signal or main code signal via the PCM processor 111, and at the same time, a necessary subcode signal is input from the subcode generator 113. automatically generated by encoder 11
2, 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 all the sag code signals are generated and encoded into the main code signal with an accurate and simple operation, and although it is effective, it is not possible to perform master recording. This is inconvenient because it is necessary to perform the above-mentioned operations each time.

This is because subsequent master recordings cannot be made unless the above-mentioned operations, except for the first marking operation, are repeated each time on one roll of videotape.

Therefore, in order to completely eliminate such inconvenience, it is necessary to change the time obtained in the time chart creation operation, which is the substantial final operation of generating subcode signals from each operation for the first master recording mentioned above. Chart data is pre-recorded at the beginning of the audio track of the videotape, at an area before the area where the first marking signal is recorded (this is necessarily before the recording area of the PCM music signal recorded on the video track). What is necessary is to perform a time chart data recording operation such as recording 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 operations again. This is very convenient since it is possible to read the chart data and immediately generate the subcode signal necessary for master recording.

In addition, 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.

Also, even if you are able to place a marking exactly at the desired position, there may be cases where it is better to change the position (especially the beginning and ending positions of the song) for some reason. .

Therefore, in such a case, it would be convenient if the entire marking position could be corrected without having to perform 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 operating the - key 115. Based on this, a subcode signal is generated.

Next, a specific example of the subcode generator 113 in the above will be explained, but first, CD system (D?): 7
An example of - (P, Q in %) will be explained below.

■Frame structure The frame structure of the subcode is shown in FIG. One subcoded block includes 98 subcoded symbols.

The repetition frequency of one block is 75 Hz.

The first two sub-coded symbols are the SO and Sl sub-code synchronization patterns.

■Channel P Channel P is a flag bit indicating the start of a musical tone piece according to the following code rule.

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 note on the disc). The end of the starting flag marks the beginning of the lead-out track.

Channel P remains at zero for 2 to 3 seconds after the start of the lead-out track, and the next P switches between O and 1 at a rhythm of 2Hz±2ch (data ratio 50±10%). Channel P can only be changed after sub-symbol synchronization patterns SO, S1. The encoding of channel P is delayed by one subcode block with respect to the encoding of channel Q.

■Channel Q The normal data format of channel Q is 9 shown in FIG.

■-1 Control: Channel number and Buri Emphasis 0N10
It is sent MSB first with 4 flag bits for FF.

oooo... Indicates 2 audio channels without emphasis.

1000...Indicates 4 audio channels without emphasis.

X001... Buri Emphasis 50/15μs 2
Or 4 audio channels. The pre-emphasis flag (bit 4 of the control block) can only be changed during the actual nailing of at least 2 seconds.

■-2 Address: 4 control pins for data Q) Sent from MSB.

■-3 Datalonia 2-bit data, MSB is always sent out first.

-4 CRC: control, address, and data (1 set of 16 bits on Q) CRC is sent from MSB. On disk, the parity bits are inverted. The remainder is checked for zero.

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

■-1 Mode 1: ADR=1=(0001) Mode 1 is 1
0 consecutive subcode pro.

Occupy at least 9 towers of Tsuku. 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: Music number expressed in 2-digit BCD.

00 lead intratrack The end of the lead intratrack is This is the starting diameter in the gram range.

01-99: Musical number Musical pieces are preceded by a nail with the same musical number. The music number bar starts from the value 01 and increases by one bar. When one program is stored on several disks, the numbers are sequentially numbered.

AA: Lead-out track The lead-out track has a nail p symbol. of the last piece of music on a disc without leading The end is about to begin.

X: Express the table of contents of the music number in 2-digit BCD.

Lead intratrack period table of contents X is available It's not effective.

00:<Gishi encoding Coding of nails in channel Q I'm playing music right now.'' Give the length. The first piece of a musical piece is Nail for 2-3 seconds (see channel P) It is led by the following sign. lead door Output tracks can be encoded as musical tones. ing.

01-99: Sub-division number lead-out track period X is 01° tone piece (TNO'
= 01799, the first value of X in x(oo) is 0
It becomes 1. 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, NIN.

SEC and FRAME are each 2 digits. 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. Lead-in and lead-out track times are increased. The minutes are stored in MIN and the seconds are stored in SEC. One second is subdivided into 75 frames. (Running from 00 to 74) AMIN, ASEC, AF'RA: The running time of the disk is expressed in 6-digit BCD. AMIN, A
SEC and AFRAME are each 2 digits. At the starting diameter position of the program area, the travel time is set to zero and the TN
O contains the value of the first music on the disc. Minutes are AM
In IN, the seconds are stored in ASEC. One second is subdivided into 75 frames. (Run from Oo to 74) PO
INT, PMIN, PSEC, PFRAME
:The contents of Table 1 during the lead intratrack are stored in these locations. The contents of this table are continuously repeated during the lead-in area (TNO=OO). Within each table, the items are flipped three times.

At the end of the lead-in area, the contents of the table can be ended with any PCHNT value. PMIN, PSEC, and PFRAME are PO
Gives the starting point of the musical number indicated by INT. These values give the starting position of the music in absolute time (AMIIN, ASEC and AFRAME) with an accuracy of 1 second.

The starting position of the music is the first position of the new music number, X(OO.If POINT=AOl, the value of PMIN is given by the first TNOi on the disk,
SEC and PFRAME are zero. If POINT =
If A I, the value of PMIN is the last TNO on Dinuk.
, and PSEC and PFRAME are zero. Also LPOINT=
For A2, PMIN, PSEC and PFRAME give the start position of the lead-out track. Table 1 shows the encoding sequence when six songs are included on one disc.

■-2 Mode 2: ADR=2=(0010) If mode 2
is presented, the data type in mode 2 that occupies at least one of the 100 consecutive sub-code blocks is as shown in FIG.

N1-N13: Disc catalog number expressed in 13-digit BCD. UPC/FAN code (BAR encoding) is used. The catalog number (number) does not change on the disc.

If there is no catalog number encoded based on the UPOΔAN code, N1 to Nz3 can be all zero or mode 2 can be deleted from the disc.

ZERO: These 12 bits are zero AFRA: Continuation of AFRA in mode 1 (00
2-digit BCD (running from 74 to 74).

Duration of lead-in area (TNO=OO). These 8 bits are zero.

■-3 Mode 3: ADR=3=(0011) If mode 3
is presented, it fully occupies at least one of the 100 consecutive blocks. Mode 3 is used to give unique numbers to musical pieces. This is done using l5RC (International Standard Record Code). l5RC is DI
It is determined by N-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. l5RC code 12
Characters are provided by Engineering 1 to Engineering 12. The country code is given by 1~2, 3~5 gives the owner code, 6~I7 gives the record year, and 8~11
2 is the serial number of the record. Characters 1 to 5 are coded in a 6-bit format according to the table below. (2) The 6th to 112th digits are 4-bit BCD numbers.

00: These 2 bits are zero ZERO: These 4 bits are zero AFRAME: Continuation of AFRD field in mode 1 (
2 digit BCD running from 00 to 74i).

Lead-in area period (TNO=OO) These 8 bits are zero.

■Channel Re S t T r U, V,
W These channels are zero, and no other outputs are allowed in these locations.

FIG. 8 shows an example of the timing relationship of the P and Q signals on the disk.

Next, a specific example of the subcode generator 113 described above will be explained.

That is, FIG. 9 shows a panel layout diagram of the subcode generator 113, which has an operation key part 200 corresponding to the keyboard 115 described above and a display section 300 corresponding to the display 116. In this case, the operation keys 200 are P and IN keys 201, which are displayed in the upper part of the diagram and are used in the marking mode.
, M, HEAD key 202 , M, CHANG key 2
03, INDEX key 204, P, CUT key 20
5, M, outside the END key 206, VERIFY
Key 207.5 TART key 208.5 TOP key 20
g and numeric keys 2 from 0 to 9 with indications in the lower part of the illustration.
10,211,212 (However, O~6 is the above 201~20
7 is also used) and the above 1 to 6 numeric keys 202 to
MARK key for mode specification, 5AVE key, LOAD key, which has a display on the key itself that is also used as 207.
It has a CUT key, a CHECK key, and an ENTER key, which is fully displayed in the lower part of the figure, where the above-mentioned 208 and 209 are also used.

In addition, the operation key part 200 includes light emitting diodes as KYE MODE indicators in the upper and lower parts of the figure.
D 1 and LED 2 are attached. The display section 300 is a 2-digit MODE display 3 each having a display in the upper part of the figure, each consisting of a 7-segment light emitting diode.
θ7, TNO display 3θ2, inch SEC display 3
05, AMIN display 306, AS, EC display 307
and 1-digit A, FRAME display 30B, and (catalog number) CATAL of N1 to N13, which have a display in the lower part of the illustration and are used for each of the above firearms 3o2-308.
OG NUMBER display.

Note that an MtJ is located between the operation unit 200 and the display unit 300.
Light emitting die, t as SIC and LEAD-IN indicator
- LEDs and LED4 are attached.

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 2o3) This key is operated when the song changes without any pause.

[INDEX key 204] This is a key operated when incrementing 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 207] A key 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. It is.

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

C5TOP 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.

[Numeric keys from O to 9 201 to 2o7, 210 to 212]
TNO and Q signal mode of the first song in read mode
This key is operated when inputting all data in step 2 and when inputting numbers in program check (change) mode.

[5TEP key 208] TNO and Q signal mo of the first song in read mode
This key is operated when inputting de-2 data and when reading out and checking or changing program information written in advance in the program check (change) mode.

[ENTER key 209] In read mode, set the TNO and Q signal mo of the first song.
This key is operated to move the cursor (decimal point) one character to the right when inputting de-3 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.
1 b Hc g d He y f p hrlt
jtlxprurqk Display in the format shown in FIG.

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

A, FR title display 302 to 308] Track number (TNO), index number, minute and two seconds of track time (MI
N), (SEC), 1 minute of absolute time from the beginning of the first song (A, MIN), (A, 5EC), and the same absolute frame (A, FRAME) 'i are displayed in numbers.

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

[MTJSIC display (LED3)] Lights up when in the program area during cutting mode.

(LEAD-IN indicator (LED4)) Lights up when in the lead-in area during cutting mode.

[KEY-MODE indicator (LED 1), (ring 2)] Lights up corresponding to which of the above-mentioned operation keys is in the upper or lower operation state.

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

[Marking (MARK) mode]

This mode is for marking the beginning of a song, etc. on the audio track of a videotape.

[READ mode] This is a mode in which data necessary for generating all subcode EFM signals from marking signals recorded on the audio track of a videotape is created.

[Program save (SAVE) mode] Subcode E
In this mode, data necessary for generating an FM signal is recorded at the beginning of the audio track of a videotape.

[Program load (LOAD) mode] This is a mode in which data recorded at the beginning of the audio track of a videotape in the program save mode is read.

[Cutting (CUT, ) mode]

Mode for generating a subcode (EFM) signal 9 As mentioned above, by generating a subcode signal to be encoded into the main code signal and then having all the encoders perform the necessary encoding processing, it is possible to record the master disc. This is the mode in which signals are derived.

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

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

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

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

In this case, the correspondence between the numbers (keys) 1 to 5 displayed on the MODE display 30 and the mote specification is as follows.

1... Marking (MA, RK,) mode 2... Read (READ) mode 3... Program save (SAVE) mode 4...
Program load (LOAD) mode 5...Cutting (CUT,) mode 6...Program check (
CHANGE CHECK MODE The first thing you can specify is marking MARK, mode, followed by P, IN, M, HEAD, M, CHANGE, which should be operated during marking mode.
.

IND ■, P. OUT, M, END operation keys 2
The marking operation is performed by operating the numbers 01 to 206 according to a related check program as shown in FIG. 12, for example.

Note that the M and END keys 206, which are operated at the end of the song, are pressed to the P and OUT keys within 10 seconds after the keys 20-6 are depressed.
If the key 205 is operated, the operation of the key 206 is P,
P, OUT key 20 interpreted as operation of OUT key 205
It is assumed that the operation in step 5 is ignored. However, this is excluded if the M, HEAD key or the M, CHANGE key is operated between the operations of the M, END key and the P, OUT key.

Also, the operation of the M, END key before M, HEAD can be omitted, but in this case, the M, END key operation can be omitted.
is processed as if it were M, for example, 3 seconds before HEAD.

Here, when the M, END key, and MHEAD key are pressed intermittently at a relatively fast cycle, the result is shown in FIG. 13(a).

As shown in (b), 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 intermittent operation time is less than 10 seconds, for example, the earliest one will be accepted.

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

Furthermore, the M and HEAD key operations after P and IN may be omitted; in that case, P. The example of IN is M after 3 seconds.
, HEAD are assumed to exist.

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 FIG. 14, read (READ) E −
This is specified in the marking mode for reading the marking signal sound marked on the video tape and creating lead-in information (TOC data) and program information.

Therefore, it is of course necessary to rewind the videotape 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 TNOO can be entered as follows.

For example, to enter 16# as the TNO, first press the numeric key "1" fully, then press the ENTER key, and finally press the numeric key "'6#." During this time, the TNO display 302 The display format is shown in Figure 15(a).
(b) and (C).

If you enter the wrong number, press ENTER key 209
Press f 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 STEP key 208 to enable input of the catalog number, and input the entire 13-digit catalog number using the same operation as the above-mentioned method for inputting the TNOO.

When the catalog number input is completed in this way, operate the 5TEP key 208 again (if the catalog number is OK, press S TEP immediately).
(You can do this by operating the key 208) In particular, a mode is set in which the previously marked marking data can be read a large number of times.

This mode is shown in FIG.
5TART key 208 after playing TR110k
It's okay to operate f.

Then, when the loading is finished, press the S TOP key 209
(The same applies if you want to cancel).

During this time, if the reading error display 2E disappears, V
TR110'c rewind, operate again? You can just fix it.

Furthermore, if the syntax error display 2d due to a mark mistake is made, all the 5TOP keys 209 can be operated to temporarily enter the mode standby state, and then the correction can be made in the program change mode described later, or the marking can be corrected again by entering the marking mode.

Next, save the program (SAVE) as shown in Figure 17.
%-code, but in this case, the video clip marked with f) is also rewound to about 2 minutes earlier.

Then, as the VTR 110f after-recording state, 5TART
Operate the key 2θ8 to enter the writing state, and when the writing completion message is displayed, rewind the videotape to the part before writing, and then enter the play state and verify (VERI FY
) mode.

As a result, when all lines have been read and the reading completion display 3F appears, the VTR 110 is stopped and the 5TOP key 2
I'll operate 09.

In this case, if the reading error display 3E is displayed, all you have to do is repeat the operation from the beginning.

Next, the case of loading a program (LOAD X need) for reading data as shown in FIG. 18 will be described.

In this case, the video tape is set in advance at the portion before the above writing, and then the VTR 110f is put into the playing state and the 5TART key 208f is operated.

As a result, when the entire program has been loaded and the load completion display is displayed, the VTR 110'l is set to a stopped state and the 5TOP key 209f is operated.

If the reading error display 4E disappears during this time, you can try the operation again.

Next, a case will be explained 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.

That is, this program check CHECK (change)
The mode is to display one state (one command) each time the program data i5TEP key 208 is pressed, and change the program data as necessary.

FIGS. 20(a) to 20(h) show display examples of each data displayed by operating the 5TEP key 20B described above.

If changes are made, see Figures 21 (a) and (b).
.

As shown in (c), press 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 a case where M and HEAD time are delayed by 3 seconds) A. Shows an example of changing 5EC 14 seconds to a total of 11 seconds).

Next, cutting (CUT,
) mode will be explained.

In this case, first set the videotape in a predetermined state for cutting, then hold the VTR 110f in a pause state, operate the CUT key 206.5 and the TART key 208, release the pause state of the VTR 110, and start all cutting. , the end of the program for cutting will be displayed, then press the spatula 5 TOP key 209f.

In this case, first, the data in the serial in area is displayed by operating the 5TART key 208, and then the data is displayed on the VTR 110.
5P, IN data is entered, or 5TART key
During the operation of 208, the 4th part of 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. M.I.
JS I C display LED3LEAD-IN display LE
The display state of D4 is as shown in FIG.

In addition, in Fig. 20, Te (f) is M, CHANG 02
Seconds ago and M, END and M, HEAD interval is 2 seconds/
This is the display that appears when JS is activated. Similarly, in Fig. 20, the error display 6d in (h) is ignored during cutting, but if this display 2d appears at any other time, it indicates that the marking at the relevant time is a syntax error. Therefore, it is best to take the context into consideration and correct it.

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

First, regarding the 200 operation keys, some of the operation keys are P, IN keys 201, M, H, which are displayed in the upper part of the figure and are used in the marking (MARK) mode.
EAD key 202, M, CHANG key 203, IND
EX key? o 4, P, OUT key 205, M,
END key 206 and program save (SAVE)
The VERI FY key 207 used in the read mode and the program check CHECK (change) mode is also used correspondingly as the numeric keys 0 to 6 among the numeric keys displayed in the lower part of the illustration used in the read mode and program check CHECK (change) mode. In addition, the MARK key, RFJAD key, 5AVE key, LO key, which has a display on the key itself used when specifying the mode.
Also used as AD key and CUT key (however, P, IN key 2
01 is excluded), the number of keys required as a whole can be significantly reduced, contributing to cost reduction and improvement of the panel space factor. In order to make sure that the keys are used properly, a light emitting diode, an ord LED 1, is provided in the upper and lower parts of the diagram to indicate which key mode is being operated in association with each other.
The key point is that a KEY MODE indicator consisting of two LEDs 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 MODE indicator 301'i is not attached to the display section 300, but a MODE indicator 301'i is attached to the display section 300.
f, so that each mode can be displayed and the display according to the progress state in each mode can be displayed.In this case, the display for each mode and the display according to the progress state in each mode can be displayed on the same display. One of its distinctive features is that it is made so that it can be done easily.

The knob 5 and the MODE display 301 each consist of a 2-digit display consisting of a 7-segment light emitting diode.
Its one-digit display displays the mode number 1 to 6, which corresponds to the operation of the mode designation key, and the other 1 digit indicates the progress status of each mode from 1 to 6 above. Alphabets a l b l” #
d j e 1f+)lyf+J v4+prupo
(However, the actual display status is as described above.) By changing the display form, each mode and the progress status of each mode can be displayed on the same display. However, if this configuration were not adopted, it would be necessary to provide a number of indicators corresponding to the number of modes and the number of progress states for each mode. This is because the number of displays can be significantly reduced, contributing to cost reduction and improvement of the panel space factor.

In addition, for the 200 copies of the operation keys, 5TART key 2
08.5 The step 5 TEP key and the ENTER key, which are also used in correspondence with the TOP key 209, are configured to be able to be used in two modes, the sharp mode and the program check (change) mode, with equal constraints, respectively. There are several points. This allows the function to input all mode-72 data (including corrections) for the TNO and Q signals of the first song in the read mode, and the function to read and check or change previously written program information in the program check (change) mode. These functions can be reasonably performed using the same key, and the number of keys required can be reduced compared to providing separate keys for read mode and program check (change) mode. This can contribute to reducing costs and improving the space factor of the panel.

As for the display section 300, each 2-digit TNO display 3o2 and index (X) display 30 each have a 7-segment light emitting diode display in the upper part of the figure.
3. SEC display, 904, A, MIN display 305
, A, SEC indicator, qo 6 and 1 digit A, FRA
ME display 307 is N1 which has a display in the lower part of the figure.
~The fact that it is also used as the catalog number display for N13 is that it can significantly reduce the number of displays required overall and reduce costs, contributing to improving the space factor of the panel. Can be mentioned.

In this case, the MODE display 301 cannot be used to display the entire catalog number input (display) state in the single mode, but the remaining program information displays 301 to 307 each have 13 digits. It is important to be able to display just the right amount of catalog number that needs to be displayed.

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 period of time, for example, 10 seconds.
If ``k'' is operated, the operation of the corresponding key 206 is interpreted as an operation of the PP and OUT keys 205, and the operations of the PP and OUT keys 205 are ignored.

The reason for operating the υ, P, and OUT keys 205'f is to specify that the program area will end and you 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, after a predetermined period of time (within 10 seconds) after operating the M and END keys 206, assuming that there is a next song, the P and OUT keys 2 are pressed again.
Since all 05 operations have been performed, it is the point at which the original program area ends and the lead-out area should be entered.
This means that the key 205 is assumed to have been operated.

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

In addition, by processing M, END before M, HEADO as if it had occurred a predetermined time, for example, 3 seconds, it is possible to omit all the key operations for M, FJND before M, HEAD, so that the operation is reduced accordingly. One point is that it has been simplified.

When the M, END, M, and HEAD keys 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 be operated intermittently. If the total operation time is less than a predetermined time, for example, 10 seconds, the earliest one can be accepted, thereby ensuring complete operation reliability.

Furthermore, by processing M and HEAD of the first song as being after a predetermined time, for example, 3 seconds, after P and IN, key operations for M and HEAD after 9, P and IN can be omitted. The point is that the operation has been made as simple as possible.

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

M, HEAD, M, CHANG, INDEX
, P, OUT, M, and END are, as mentioned above, important in that they are individually encoded ASCII code iFM modulated signals as different signals in consideration of ease of subsequent processing.

Next, when in program save mode (SAVE),
7' f (VERIFY) mode is provided with a function to check saved data, ensuring reliability of operation.

In addition, in the program change mode, the programmed data can be displayed and checked for one state each time the 5TEP key 201jf is operated. Another point to note is that the reliability of operation is ensured.

If there is any data that you would like to change during this check, you can easily change the program data by pressing the ENTER key 209, moving the cursor to the part that needs to be changed, and operating the number keys. What is being done is also important.

Another advantage is that the reliability of operation is ensured by displaying syntax errors 2d due to mark mistakes in the read READ mode.

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

It is also important that when any of these errors, especially the syntax error display 2d, occurs, the error can be easily corrected by using the program check mode described above. be.

Furthermore, in the cutting mode, data in the serial in area is first output by operating the 5TART key 208, and then data in the serial program area is input by inputting data from the VTR 110, or data in the serial program area is output by operating the START key 208. data is output, and finally, when data in the program area is completed, data in the lead-out area is output, which simplifies operation and ensures reliability. .

In addition, by providing each of the above-mentioned modes, ie, merging mode, read mode, program save mode, program load mode, and cutting mode, it is possible to simplify the operation and improve reliability. It is also important that a desirable subcode signal generator with a high level of functionality can be realized by organic combination.

It goes without saying that this invention is not limited to the embodiments described above and illustrated, but can be modified and applied in various ways without departing from the spirit of the invention.

〔Effect of the invention〕

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

[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. FIG. 3 is a diagram for explaining a specific example of the diagram. 11θ...VTR1111...PCM processor,
112... Encoder, 113... Subcode signal generator, 114... Control circuit, 115... Keyboard, 116... Display, 117.118... Input/output counter face, 114FL... - Marking signal generation section, 114b... Subcode signal storage section, 114c
...Time measurement circuit section, 114d...Time chart creation section, 2oo...Part of operation keys, 3o. ...Display section, 201-P, IN key, 202-M, H
EAD key, 2o 3-M, CHANG key, 2o
4-INDgx key, 205-P, OUT key, 206
・M, END key, 207-VERIFY key 1. ?
o s ・S, TART' key, 209-8 TOP key, 200-212-... number keys, 2 o 2 ・M
ARK key, 203-REA key, 2o4-8AVE key, 205 ・LOAD key, 206 ・CUT. Key, 207 ・CHECK key, 20 B ・5TE
P key, 209-ENTER key, 301-M0DE indicator, 302...TNO indicator, 3o3...Index ■ indicator, 3Q4...MIN indicator, 3θ5.
・・SEC display, 306 ・A, MIN display, 30
7-A, SEC display, 3θ8...A, FRAME display, 302-308...catalog number display,
LED I FLED 2-KEY MODE indicator, LED 3-MUSIC indicator, LED, ... Lead-in indicator. Applicant's representative Patent attorney Takehiko Suzue Figure 11 Figure 12 Figure 13 M, aNLJ MjNLI MhiNLl
1Vlnl:AL,l M,Mhi ALI Fig. 14 Fig. 16 Fig. 18 Fig. 19 (1:+) (M, HEAD) (C) (INDEX) Fig. 20 (d) (M, END) ( e) (M, CHANGE) MODE TNOX M
INSECA, MIN, A, SECA, FRA
ME (f,) (Pa'7t Hh:T) a) Fig. 20 ((]) (P, OUT) MODE TNOX MI
N(h) (error display) MODE TNOX MI
NSECA, MIN A, SECA, FRA
ME(b) (C)

Claims (1)

[Claims] 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 the audio track of the video tape; and a third means for reproducing the video channel 7'' in which the measured time data has been recorded, based on the reproduction measured time data. a fourth means for performing a program load mode in which a subcode signal corresponding to the main code signal is generated and stored; and a cutting mode in which the subcode signal generated and stored is transmitted by the fourth means. and a sixth means for executing a program check mode for checking the subcode signal data generated and stored by the fourth means,
A subcode signal generating device characterized in that it is configured to be able to display a syntax error state due to a mark mistake in the read mode, and to be able to perform error correction in the program check mode.