JPS5972623A - Sub-code signal generator - Google Patents

Abstract

PURPOSE:To generate easily and accurately by a sub-code for main code encoding, by displaying a read error state of a reproducing marking signal being the basis of sub-code automatic forming at the read mode. CONSTITUTION:In operating a key 203 of an operating section 200 of a keyboard of a sub-code generating circuit, the read mode is attained, and a marking signal recorded in response to a PCM main code on a VTR tape is reproduced and read out at the marking mode. Then, the generating time of the reproducing marking signal is measured and the sub-code based on the marking signal is formed automatically by the program saving mode and the program cutting mode, encoding is attained by the cutting mode and the sub-code is corrected as required by the program check mode. If there is any error at the reading of the reproducing marking signal at the read mode, the generation of error is displayed on a mode display part 301, the read mode is executed from the beginning so as to generate the sub-code easily and accurately.

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 generation method thereof. Concerning improvements to equipment.

[Technical background of the invention and its problems]

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 as high fidelity recording and reproducing 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 if all systems are adopted, the disk record master recording device that embodies the system is required to be capable of satisfying 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, conventional cutting is used. It is done optically using laser light instead of laser beams, but in that case,
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.

Among these, the P signal is 0# during a song and becomes 1# between songs, and even if there is no interval between songs, it remains ``1'' for a certain period of time, and after the last song. l in the lead-out area
"," ON are repeated alternately.

In addition, the Q signal includes the number of the song at the time it is being played (TNO: rack number), the index (X) indicating the subdivision within the song, the elapsed time within the song, and the number from the beginning of the first song. It is used to display absolute time.

In addition, this Q signal is a table of contents (TOC) that includes the absolute time, maximum and minimum number of songs, etc. for each recorded song in the lead-in area before the first song.
It is used for recording songs, and the purpose is to facilitate a random search of recorded songs in combination with the P signal mentioned above.

To record on a master disc, generally 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 replayed. The PCM processor is applied to derive a predetermined digital signal (main code signal), which is then sent to the encoder.
This signal is converted into a signal format such as the O format and is used for controlling the laser output of the master recorder.

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 a VTR tape containing a music source, the time at which the song starts was measured using a clock and inputted into a subcode generator before recording the master, and a subcode was generated again during recording. All subcode signals were generated to drive the VTR tape and encoded into the main code signal from the VTR 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 These methods have serious disadvantages in that their head times tend to be inaccurate and their operations are very complicated.

[Purpose of the invention]

Therefore, the present invention has been made in view of the above points, and is an improved subcode that can generate all subcode signals accurately and with simple operations to be encoded into a main code signal that has been converted into PCM in advance. The purpose is to provide a signal 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 read mode in which the marking signal is recorded by the first means, plays the entire 7 degrees of the video and measures 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 the videotape; and a third means for reproducing the videotape on which measured time data has been recorded by the third means, and based on the reproduction measured time data. a fourth means for performing a program loading mode for generating and storing a sub-code signal corresponding to the main code signal; and a fifth means for performing a cutting mode for transmitting the sub-code signal generated and stored by the fourth means. and sixth means for executing a program check mode for checking the subcode signal data generated and stored by the fourth means, and capable of displaying a read error state during the read mode. It has all the features of the structure.

[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 business-use VTR, and this VTR 110 is loaded with a video tape in which a music signal, which is a main code signal to be recorded, is recorded in PCM format in a predetermined format in advance on its video track. It is assumed that

The video output terminal T1 of the VTR7J o is connected to the PC.
It is coupled to the main code signal input terminal T2 of the encoder 112 via the M processor 111.

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

Here, the control circuit 114 includes a marking signal generating section 114g that generates all marking signals (described later) in response to commands from the keepee 115, a subcode signal storage section 114b that stores various data generated as subcode signals, and a subcode signal storage section 114b that stores various data generated as subcode signals. It has a time measurement circuit section 114c that measures time based on the audio track reproduction output from the VTRJ 10, and a time chart creation section 114d that creates a predetermined time chart to be described later based on the output from this time measurement circuit section. However, 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 created by the time chart creation section 114d.

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

The encoder 112 is configured to encode the sub-code signal into the main code signal and perform necessary encoding processing (for example, EFM: Eight-Fourteen Modulation) in accordance with the seven formats of the CD system, and the encoder 112 is configured to perform necessary encoding processing (for example, EFM: Eight-Fourteen Modulation) in accordance with the seven formats of the CD system. It is assumed that the signal output terminal Tγ is coupled to a laser beam modulation section of a master recorder (not shown in FIG. 1).

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

That is, although these markings are basically placed at the beginning and end of the song, they may also be placed at the breaks within the song when the index (X) signal is taken into consideration.

Also, markings to indicate the starting and ending points of a disc record are also necessary.

These markings may be made as a single signal, for example, a sine wave signal with a constant frequency, but in terms of ease of later processing, it is preferable to use different signals for each. .

For this reason, the marking signal actually used is the ASCII code, for example, the one defined as 'i F
It may be used by modulating M.

■Disc performance start point......A■Disc performance end point......Start of 80 songs...C.These marking signals The marking signal generator 11 in the control circuit 114 responds to key operations on the keyboard 115 attached to the subcode generator 113 for convenient operability.
4a.

The marking operation will be performed with the VTR 11o2 in the playback state, but in this case it is assumed that the audio track of the video tape is in the recording state (after-recording).

The music signal fPcM recorded as PCM on the video track of the videotape by playing back the VTRj 10
The marking operation is performed by operating the keyboard 115 while listening through the entire f-processor 111 on the monitor 119 to record a narrow marking signal on the audio track of the entire video tape.

In this case, each marking signal generated from the marking signal generation section 114a in the control circuit 114 in response to key operations on the keyboard 115 and FM modulated using the ASCII code as described above is transmitted 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 the marking operations are completed in the manner described above, the VTR 11 returns to the playback state and starts measuring time. In this case, it goes without saying that the audio track of the videotape is in a playback state.

Audio track playback output (marking signal) from Tsumashi, V'rR11θ All input/output interface 11
8 to the time measurement circuit section 114c in the control circuit 114.
The entire time between each marking point from the starting point of the disk is measured.

Next, when the above-described time measurement operation is completed, time chart creation (S J I 4
At step a, a time chart creation operation corresponding to each marking is performed.

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

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

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

After that, the VTR 110 is put into the reproducing state again, and the subcode generator 113 first repeatedly generates the TOC signal. When the marking signal for starting a performance recorded in advance on the audio track of VTRll0 is input to the subcode generator 113, the subcode generator 113 generates a subcode stored in advance in the storage section 114b of the control circuit 114. A P signal and a Q signal 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 automatically generated from the subcode generator 113. 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 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 unless you repeat each of the above-mentioned operations, except for the first marking operation, on one roll of videotape each time, you will not be able to make subsequent master recordings.Q. In order to eliminate such inconvenience, it is necessary to use the time chart data obtained in the time chart creation operation, which is the substantial final operation of generating the subcode signal in each operation for the first master recording described above. In advance, mark the beginning of the audio track of the videotape before the part where the first marking signal is recorded (
This can be accomplished by performing a time chart data recording operation in which the time chart data is recorded in the recording section of the PCM music signal that is necessarily recorded on the video track.

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 because it is possible to read the data and immediately generate the subcode signal necessary for recording the master disc.

It should be noted that in the above-described marking operation, it is difficult to accurately mark a desired position, and sometimes a mark may be placed in the wrong position. Also, even if you are able to place all the markings exactly at the desired position, there may be cases where it is better to change the position (especially the beginning and end positions of the song) for some reason. be.

Therefore, in such a case, it is food if the marking position can be corrected without having to repeat the marking operation again.

Next, to explain the marking correction operation that can meet such a request, first read out the time chart data recorded at the beginning of the audio track on the video tape, and correct it by displaying it on the display 116. 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. Based on this, a subcode signal is generated.

Next, a specific example of the subcode generator 113 described above will be explained, but before that, an actual example of the subcodes (particularly P and Q) of the CD system will be explained.

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

The repetition frequency of the l block is 75 Hz.

The first two sub-coded symbols are the SO and Sl sub-code sync/turn.

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

Musical tone p=.

Start Flag P=1 The minimum length of the encoded start flag in channel 4' is 2 seconds and the end of the encoded start flag provides 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)-l Lead intratrack 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 remains at zero for 2 to 3 seconds after the start of the lead-out track, and the next P changes between O and 1 at a rhythm of 2 Hz±2 CH (data ratio of 50±10). Channel P can only be changed after sub-symbol synchronization pattern So,81. The encoding of channel P is different from the encoding of channel Q in that it consists of one vice-command block. Channel Q The normal data format of channel Q is shown in FIG.

■-1 Control 2 Channel number and Nori 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 emphasis.

X001... Buri Emphasis 50/15μs 2
Or 4 audio channels. The glue 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 bits for data Q.

It is transmitted MSB first.

-3 Data Q Near 2-bit data, MSB always sent first.

■-4CRC: Control, address and data. The upper set of 16-bit cRc is sent out MSB first.

On disk, the parity bits are inverted. The remainder is checked for zero or □.

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

■-1 mode 1: ADR=1=(0001) Mode 1 means that at least 9 of 10 consecutive sub-code blocks
Occupy a piece. Two different data types are possible in Mode I.

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: Expresses the music number in 2-digit BCD.

00: The end of the read intratrack is the starting diameter of the program area.

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

The music number box starts from a value of 01 and increases by 1. 1
If one program is stored on several disks, the numbering is done sequentially.

AA; Lead-out Track The lead-out track begins at the end of the last piece of music on the disc without a lead-in sign.

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

Lead intratrack period table of contents

The first piece of music is preceded by a nail sign lasting 2-3 seconds (see channel P). The lead-out track is encoded as a musical tone.Q 01-99: Sub-division number The period X of the lead-out track is 01. Musical piece (TNO)
=01~99, the first value of X in X(OO) is 01
becomes. The value of X can only be increased by l.

ZEZO: These 8 bits are zero.

MIN, SEC, FRAMg: The running time in a musical piece is expressed in 6-digit BCD. That is, MIN, SE
C and FRIJIB 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. The lead-in and lead-out track opening times will increase. Minutes are stored in MIN and seconds are stored in SEC.

One second is subdivided into 75 frames (running from 00 to 74) AI'+41N, ASEC, AFRA, ME: The running time of the disk is expressed in 6-digit BCD. ,αIN
, ASEC, and AFRAME each have two digits. At the start radius of the program area, the running time is set to zero and TNO contains the value of the first music on the disc. The minutes are stored in AMIN and the seconds are stored in ASEC.

One second is subdivided into 75 frames (running from oo to 74) POINT, PMIN, PSECoPFRAME: During the lead-in track, the contents of Table 1 are stored in these locations. The contents of this table are continuously repeated during the lead-in area (TNO=OO). 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.

PMIN, PSEC and PFRAME give the music number starting point indicated by POINT. These values determine the starting position of the music in absolute time (AMIN, ASEC) with an accuracy of 1 second.
and AFRAME). The starting position of the music is the first position of the new music number, which is X)OO.

If POINT = A O, the value of PMIN gives the first TNO on disk, and PSEC and PFRAME
is zero. If POINT=AI, the value of PMIN gives the last TNO'i on disk, PSEC and PF
RAME is zero. If POINT = A2, PMIN, PSEC and PFR, AME give the starting position of the lead-out track. 1 in table 1
An example of encoding when 6 songs are included on the disc is given. 0 - 2 Mode 2: ADR = 2 = (0010) If mode 2 is presented, out of 100 consecutive sub-code blocks, At least one is fully occupied. The data format in mode 2 is as shown in FIG.

N1 to N13: Disc catalog number expressed in 13-digit BCD. Uses UPC/, N code (BAR encoding)
. 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 AFRAME: Continuation of AFRAME in mode 1 (2 digit BCD running from 00 to 74). During the lead-in area (TNO = OO), these 8 bits are zero - 3 Mode 3: ADH = 3 = (0011) If mode 3 is presented, at least 1 out of 100 connected blocks Occupy one.

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 all 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 ■1-112. Country codes are given for Engineering 1 to Engineering 2, and I
3 to ■5 give the owner code, I6 to F give the year of the record, and I8 to 112 give the serial number of the record. The characters 1 to 5 are 4-coded in 6-bit format according to the table below. Digits 6 to 112 are counted by the 4-bit BCD number.

OO: These 2 bits are 0 zzp, o: These 4 bits are 0 AFR pressure; A in mode 1, FRA old previous 1 child (0
2 digit BCD of running from 0 to 74). During the lead-in area (TNO=OO), these 8 bits are zero.

■ Channels R, S, T, U, V, W These channels are zero, and writing other data 'ff: in these locations is not allowed.

Fig. 8 shows an example of the timing relationship of the P+Q signals on the disk in the above.

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

That is, FIG. 9 shows the layout of the subcode generator 113, which has an operation key section 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 brightly lit during the marking mode.
, M, HFJAD key 202. M.

CI (ANC, key zos, INDEX key 2
04, P, OUT key 205, M, END key 206, VERIFY key 207, 5TART
Key,? o g, 5 TOP key 209°, and number keys 210, 21 from O to 9, which are displayed in the lower part of the illustration.
1,212 (however, 0 to 6 are also used as the above 201 to 207) and a mode designation MARK that has a display on the key itself that is used as the 1 to 6 number keys 202 to 207.
Key.

READ key, 5AVE key, LOAD key, C
UT key.

It has a CHECK key, a 5TEP key and an ENTER key, each of which is displayed in the lower part of the figure, where the keys 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.
I I LED 2 is attached.

The display section 300 has a display of two digits MOD, each of which has a display in the upper part of the diagram, each consisting of a segment light emitting diode.
E display 301, TNO display 302, index X display 303, MIN display 3o4°SEC display 305, A, MININ display 06, A, SE
C display 307 and 1 digit A, FRA decimal display 30B
Each of the above-mentioned indicators 302 to 3 has a display in the lower part of the figure.
08 is also used as N1 to N13 (catalog number)
It has a CATALOG NUMBER display.

Note that there is a MUS between the operation section 200 and the display section 300.
Light emitting diodes LED 3 + LED 4 are attached as IC and LEAD-IN indicators.

First, the nine display modes for use of each of the operation keys and the display will be explained.

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

CM, HEAD key 202] This is the key operated at the beginning of the song.

(M, C) IANG, key 203] This is the key that is used when the song changes without any pauses.

[INDEX key 2o4] This is a key operated when incrementing index X.

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

[: M, END key 2o6] This is the key operated at the end of the song.

(VERIFY key 2o7) This key is operated in program mode to compare the saved program information with the program area information stored in the subcode generator and check whether it has been recorded accurately. be.

(5TART key 2o8) This key is operated to start each of the read mode, program save mode, program load mode, and cutting mode.

[5TOP key 2o9] This key is operated to stop processing and wait for mode designation in read mode, program save mode, program load mode, and cutting mode. .

[0-9 number keys 201-207, 210-212] TNO of the first song in read mode. signal mode
- When entering data in 2 and checking the program (
This is the key operated when entering numbers in change) mode.

[5TEP key 2o8] TNO of the first song in read mode. signal mo
This key is operated when inputting all data of de-2 and when reading and checking or changing program information written in advance in the program check (change) mode.

(ENTER key 2θ9) TNO of the first song in read mode. Signal mo
This key is operated to move the kernor (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 in gold numbers and alphabets.
a) + (b) , (c) r (a) v (e)
+ (f) r (h) (t) r (j) t (
t) ) (p) l (II) l (q) as the 10th
Display in the form shown in the figure.

(TNO,X,l'vllIN,SEC,A,Ivl[
IN, A, SEC, A, FRA hidden display 302-308
] In lead mode, cutting mode, and program check (change) mode, the track number (TNO), index (*7 minute 1 second of song time)
MIN), (SEC) rAbsolute minutes and 7 seconds from the beginning of the first song (A, MIN).

(A, SgC), also an absolute frame (A, pRab
) is displayed numerically.

[CATLOG NUt/1BEl[1 display 302~
3o8] This is displayed when inputting the catalog number of mode -2 of the Q signal in the read mode.

[MUSIC indicator LED II:] 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, LED
2] Lights up depending on 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]

Al in the mode that marks all the beginnings of songs etc. on the audio track of the videotape.

[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 (SAvg) mode] Subcode (
In this mode, all data necessary for generating an EFM signal is recorded at the beginning of the audio track of the videotape.

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

[Cutting (CUT, ) mode] A mode in which all subcode (EFM) signals are generated. As mentioned above, the subcode (No. 8) to be encoded into the main code signal is generated, and then the necessary encoding processing is performed by the encoder. This is a mode in which a master recording signal is derived by performing this operation.

[Program check (Cf (ECK) (f change) mode] This mode is for checking and changing the time at the beginning of a song, etc., which is necessary when all subcode (EFM) signals are generated.

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 mode specification waiting state is returned (however, this is also done so that it always returns to this state temporarily even when each operation described later is completed). ) The system enters standby mode.

Then, the mode specification from such a standby state is 1.
This is done by selectively operating operation keys for specifying each mode, which are also used as the numerical keys 202 to 206 of .about.6.

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

1... Marking (fviARK,) mode 2...
Read (READ) mode 3...Program save (5AVE) mode 4...
・Program load (LOAD) mode 5... Cutting (CVT, ) mode 6... Program check (change) (CHECK) mode And the first thing specified is marking (IVIAR).
K,) mode foot, followed by P, IN r M, HEAD + M, CHA that should be operated in marking mode
NGE + INDEX rP, OUT j M, EN
The marking operation is performed by operating each of the operation keys 201 to 206 of D according to a related check program as shown in FIG. 12, for example.

Furthermore, the fvl and gND keys 206 are operated at the end of the song.
is P, OUT within 10 seconds after the relevant key 206 is pressed.
When the key 205 is operated, the operation of the corresponding key 206 is
, interpreted as an operation of the OUT key 205, P, OUT key 2
It is assumed that the operation of 05 is ignored.

However, this is excluded if the M, HEAD key or the M, CHANGE key is operated between the M, END key and the P, OUT key.

Also, the operations of the M and END keys before EADO can be omitted;
is processed as being, for example, 3 seconds before M and HEAD.

Here, if the M, END key, and tJHEAD key are pressed intermittently at a relatively fast cycle, the message shown in Figure 13 (,) will appear.
.

As shown in (b), in the former case, the last one is accepted if the intermittent reading time is less than 7 seconds, for example, and in the latter case, the earliest one is accepted if the total intermittent operation time is less than 10 seconds, for example.

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, HEAD key operations after P, IN may be omitted; in that case, it is assumed that M, F (EAD) is present, for example, 3 seconds after P, IN. shall be taken as a thing.

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, the READ mode is specified, which reads the marking signal marked on the videotape in the marking mode and reads out the lead-in information (TOo7'''-ta) and the program. It is used to perform actions that create information.

Therefore, it goes without saying that it is necessary to rewind the video clip to the first marking part iσ.

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

For example, if you want to enter "16" (5) as TNO, first press the number key 1#, then press the ENTI key, and finally press the number key "6". The display format is shown in Figure 15 (a) t
(b) t As shown in (c).

If you enter the wrong number, press ENTER key 209
Simply press f to return the cursor and (decimal) point to the upper digits, then press the correct number key.

When the TNO data input is completed, next operate the 5TEP key 2011f to enable catalog number input, and enter a 13-digit catalog number in the same manner as the TNOO entry described above.

When you have finished inputting the catalog number in this way, operate the 5TEP key 208f again (if the catalog number is 60#, immediately press the 5TEP key 208f).
(You can do this by operating the key 208f) In particular, set the mode so that the previously marked marking data can be read.

This mode is shown in FIG.
TR110"f 5TAR key 20B after playing state
You can do it by @operating.

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

If a reading error message (ZE) is displayed during this time, it is sufficient to return the VTR 110 to normal operation and try again.

Furthermore, if a syntax error display 2d is displayed due to a mark mistake, the user can either operate the 5TOP key 209 to temporarily enter a mode waiting state and then correct it in a program change mode to be described later, or switch to marking mode again and slightly correct the marking.

Next, as shown in Figure 17, save the program (5AV
FJ) mode, but in this case, the videotape should be rewound to about 2 minutes earlier than the marked part.

And 5TART as VT 110i after-recording state
Press key 208f to enter the hidden state, and when the writing completion message is displayed, rewind the video button 7'' to the part before writing, and then enter the play state and verify (VERIFY).
) mode.

As a result, when all lines have been read and the reading completion display 3F appears, the VTR 1 and 10f are stopped and the 5TOP key 209 is operated.

In this case, if the reading error display 3E is displayed, you can perform the operation again from the beginning.Next, toss the program load (LOAD) mode for reading data as shown in FIG. '' is set to the part before the above writing, and then the V'pHZ l 10 f play state is set and the START key 208 is operated.

As a result, when the program is loaded and the load completion display is displayed, the VTR 11Of is stopped and s'
I'll do all the rop key 209 operations.

If the reading error message 4E is displayed during this time, it is sufficient to confirm that the strange operation has been performed.

Next, a case will be described in which a program check (CHECK) (change) mode is used instead of a data check as shown in FIG.

This is done by operating all the STgP keys 208 while checking all 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, in this program check (cmcK) (change) mode, the program data i 5TEP key 208f
Each time the button is pressed, one state (one command) is displayed, and the program data is changed as necessary.

20(a) to (h) are the above-mentioned S TEP keys 20.
A display example of each data displayed by the operation in step 8 is shown.

And, in case of change, Fig. 21 (a) + (b)
As shown in r (C), use the ENTER key 2θ9 to move the cursor (decimal point) to the part to be changed and press the number key to be changed (the figure shows M and HEA).
An example is shown in which the time of D is delayed by 3 seconds and changed to A, 5EC14 seconds, i11 seconds).

Next, cut (CUT) as shown in Figure 22.
The case where the mode is set will be explained.

In this case, after setting the videotape to a predetermined state for cutting, hold the VTR 11 in a pause state, and then press the CUT key 2 o 6, 5, and the TART key 20.
After operating '8, VTB l 10 pose 6 t
Start cutting by dividing l'4, and when the end of the program for cutting is displayed, it is 5TO.
All you have to do is operate the P key 209.

In this case, first, the data in the series lead-in area is output by operating the 5TART key 208, and then the VTRI J
OyoshiP. When IN data is input or the 5TART key 20B 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.During this time, the MODE display 301 is MU depending on display format
SIC indicator LED a LEAD-IN indicator LED
The display state of No. 4 is as shown in FIG.

In addition, in FIG. 20, (fl is M, CI (ANC, 0
These are the displays that appear when the interval between 2 seconds ago and B+i, END and 1■, and HEAD is smaller than 2 seconds. 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 should be noted that the marking at that time is a syntax error. Therefore, corrections can be made taking into account the entire context.Next, matters that can contribute to the simplification of the structure of the above-mentioned concrete object will be explained.

First, regarding the 200 operation keys, some of the operation keys are P, IN key 2o i , which has a display in the upper part of the figure used in the marking (MARK) mode.
M, HEAD keyz O,? r M, CHANG key 2 o s r INDEX key, ? o4. P,
OUT key 205゜M, END key 206 and VER used in grogram save (SAVE) mode
The IFY key 207 is used in read mode and program check (CHECK) (K change) mode among the numeric keys (0) to
(6) MARK which is also used correspondingly to the number keys and has a display on the key itself used when specifying the mode
# -, READ key, 5AVE key, LOAD key, CUT key (however, P, IN key 201
By doing so, the number of keys required as a whole can be significantly reduced, contributing to lower costs and an improvement in the space factor of the panel.
In order to ensure that these three types are compatible, that is, to properly use them, a light emitting diode LED 1 is used to display all the key modes in association with each other in the operated state.
The key point is that a KEY MODE indicator consisting of LED2 etc. is provided.

Regarding key operations for mode specification, these keys themselves have a display, and since they are operated at the beginning of each mode, it is necessary to display the operation status of these keys. A MODE display 301 is separately provided on the display section 300 to display each mode and the progress status of each mode. One of the distinctive features is that the display for each mode and the progress state d in each mode can be displayed using the same -p display.

The knob and MODE display 301 each consist of a two-digit display made of a segment light emitting diode.
The number corresponding to the operation of the mode designation key on the one-digit display (IJ~゛(6), no mode display sound, the other one digit is the number (1)~(6) above) The alphabet (a) corresponds to the progress status of each mode.
) + (b) r (c) , (d) r(eJ r
(f) r (h) + (iJ r (j) t
(st (p) l (u) + (0) (However, the actual display form is the same as above-mentioned -1) to display each mode and the progress status of each mode. By changing the display shape g, each can be displayed on the same display, but if such a configuration were not adopted, the number of modes and the number of progress states for each mode would be different. This is because the number of required displays can be significantly reduced compared to the case where only one display has to be provided, contributing to cost reduction and an improvement in the space factor of a four-channel display.

For some 200 copies of the operation key, 5TART key 2 is still available.
The Stella f (5TEP) key and Enter (E
NTER) key can be used in two modes, read mode and program check (change) mode, with equal constraints. This allows m of the TNO and Q signals of the first song in read mode.
The function of inputting all data (including correction) of ode-2 and the function of reading and checking or changing the program information stored in advance in the program check (change) mode can be reasonably performed using the same key. However, compared to having these keys separately for read mode and program check (change) mode,
This can contribute to reducing costs and improving the panel space factor by reducing the total number of required keys.

The display section 30θ has two display units each having a display in the upper part of the figure, each consisting of a segment light emitting diode.
Digit TNO display 302. Index (X) indicator 3
03, SEC display 304°A, MIN display 30
5, A,! JC display 306 and 1 digit A, FR
The AME display 307 is the N
By being used as the catalog number display for 1-N13, the number of displays required as a whole can be significantly reduced, reducing costs and improving the space factor of the /J channel. Can be mentioned.

In this case, the MODE display 30 cannot be used to display that the catalog number is being input (displayed) in the read mode, but each of the remaining displays 301 to 307 for displaying program information It is important that the display of digits be such that the required catalog number can 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 MJND key 206, which is operated at the end of the song, is pressed, and if the OUT key 205 is operated within a predetermined time, for example, 10 seconds after the key 206 is pressed, the corresponding key is pressed. 206 operation sound P, OUT key 2
05 operation and ignores the operation of the P and OUT keys 205. This means that the program area ends without any correction and the program area enters the lead-out area. This is to specify that the P. The OUT key 205 should originally be operated at the end of the last song. However, I accidentally pressed the MJND key 206f thinking that there was a next song, and after a predetermined period of time (within 10 seconds), I pressed P again.

Since the OUT key 205 was operated, it is assumed that the P OUT key 205 was operated when the M and END keys 206 were operated, which is the point at which the original program area ends and the lead-out area should be entered. That's what it means.

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

In addition, by processing M, END before M, HEAD as if it was a predetermined time, e.g. 3 seconds ago, M, IF (M, END key operation before EAD can be omitted). The main point is that the operation has been simplified accordingly.

If the M, END key, M, and HEAD keys are all operated intermittently at a relatively fast cycle, the former will accept the last one if the intermittent interval is less than a predetermined time, for example, 7 seconds, and the latter will accept the intermittent operation. If the total 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 HEAD of the first song as being a predetermined time after P and IN, for example 3 seconds, key operations for M and HEAD after 9, P and IN are omitted. The point is that the operation has been made as simple as possible.

Also, nine P and IN are adopted as marking signals.

M, HEAD, M, CHANG, INDEX
, OUT, M, and E books are all 2M modulated with ASCII codes coded as different signals for ease of subsequent processing as described above.

Next, since the saved data check function is provided in the verify (VIJIFY) mode during the program area save (SAvg) mode, the reliability of the operation is ensured.

Also, program check (CHECK) (change)
In mode, each time the 5TEP key 208f is operated, the programmed data can be displayed and checked one state at a time.
One point is that the reliability of operation is ensured.

If there is any data that you wish to change during this check, you can easily change the program data by pressing the ENTER key 209, moving the cursor to the part to be changed, and operating the number keys to be changed. It is also important that the system is designed to be used in a timely manner.

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

Similarly, read error display 2E in read mode, write error display 3E in verify mode, and read error display 4E in program load (LOAD) mode are displayed separately. One point is that it ensures reliable operation when in mode.

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 (CUT) mode,
First, the data in the serial in area is output by operating the 5TART key 208, and then the data is output from the VTR 110.
By inputting IN data or operating the 5TART key 208, 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.
The advantages include the ease of operation and reliability.

In addition, by providing each of the above-mentioned modes, that is, marking mode, read mode, program save mode, program load mode, and cutting mode, it is possible to not only simplify and ensure operation, but also to It is also important to note that the organic combination provides a desirable subcode signal generator with a high level of functionality.

It goes without saying that the present invention is not limited to the embodiments described above and shown in the drawings, but can be modified and applied without departing from the gist of the invention.

[Effect of the invention] Therefore, as described in detail, according to this invention, P
It is possible to provide an improved subcode 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, and FIGS. 2 to 8 illustrate examples of subcodes used in FIG. 1.
9 to 22 are diagrams for explaining the entire specific example of FIG. 1. 710-VTR5111-PCM processor, 112.
...Encoder, 113...Subcode signal generator,
114... Control circuit, 115... Keyboard, IJ
6... Display device, 117, 118... People exit interface, 114m... Marking signal generation unit, 11
4b-Subcode signal storage section, 114c... Time measurement circuit section, 114d... Time chart creation section, 200
...Part of the operation keys, 3'00...Display section, 201...
・P, IN key, 202...M. HEAD key, 203 ・M, CHANG, key, 20
4...INDEX key, 205 -P, OUT key, 206-...M, END key, 207 -VERIF
Y key, 208...5 TART key, 209...5
TOP key, 200-212... Number keys, 202.
... MARK key, 203 ... REA key, 204
・5AVE key, 205-LOAD key, 206 ・
CUT, key, 207-CHECK key, 208--
5TEP key, 209 ・ENTER key, 301・'
-MODE indicator, 302-...TNO indicator, 303
...Index (X) indicator, 3o4...MIN
Display, 305-8EC Display, 306 ・A, MIN
Display, 307-A, SEC display, 308 ・A, F
RAtME display, 302~30&... catalog number display, LED l, LED 2-KEY MO
DE display, LED. ...MUSIC display, LED 4...Lead-in display. Applicant's representative Patent attorney Takehiko Suzue Figure 11 Figure 12 Figure 13 M, hNLI M, hNLI M, hNL
I M711:ALI M, rleALl
Fig. 14 Fig. 16 Fig. 18 (a) (P, IN, "EA Fig. 20/D] Fig. 20 (9) (P, 0UT) (h) [Error display] (1)) SECA, MIN A, SECA, FRAM
E(C) MODE TNOX MI
NSECA, MIN A, SECA, FRA
ME Figure 22 MUSICLEAD-IN

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 entire generation time of the reproduced marking signal; a third means for executing a program save mode for recording at the beginning of an audio track of a videotape; and a third means for performing a program save mode in which the measured time data is recorded at the beginning of the audio track of the video tape; The fourth mode executes a program load mode in which a subcode signal corresponding to the code signal is generated and stored.
a fifth means for performing a cutting mode for transmitting all the subcode signals generated and stored by the fourth means, and checking and processing the subcode signal data generated and stored by the fourth means. and sixth means for executing a program check mode, and the sag code signal generating device is configured to be able to fully display that there is a read error state in the read mode.