JPS5972622A - Sub-code signal generator - Google Patents

Abstract

PURPOSE:To simplify the constitution of a sub-code generator by using a mode designation key in common use with a signal input key at a prescribed mode. CONSTITUTION:The read mode reading a marking mode reproducing marking signal recording a marking signal corresponding to a PCM main code of a VTR tape, and measuring a marking signal generating time, the program save mode recording the result of measuring, the program load mode forming the sub-code automatically from the result of reproducing measurement, the cutting mode and the program check mode are selected and designated by keys 202-207 of an operating section 200 of a keyboard of a sub-code generating circuit. The keys 202-207 are used in common for the mark signal designation at the marking mode and the numeral designation at the read mode and the program check mode. Thus, the constitution of the sub-code encoding the main code is simplified.

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 J) AD (digital audio disc), and particularly relates to the disc record master recording device. This invention relates to improvements in subcode signal generators.

[Technical background of the invention and its problems]

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

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

In this case, a system that targets a disk (disk) as a recording medium is called a DAD system, and optical, electrostatic, and mechanical recording and reproducing methods have been proposed. Even when this method is adopted, the disk record master recording device that embodies it 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 master disks 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 in advance subcode signals used for various displays and controls on the music signal, which becomes the main code signal after CM processing.

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

Among these, the P signal is O# in the blood and does not become "1" between songs, and there is no interval between songs, so even if the song changes, it remains '1#' for a certain period of time, and it is after the last song. In the lead-out area ′
1# and '0'' 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 absolute number from the beginning of the first song. It is used to display the time.

In addition, the 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 the VTR tape. It is applied to the PCM processor again to derive a predetermined digital signal (main code signal), and then sent to the encoder at 9.
It is used to convert the signal into a signal format such as the CD system and to control 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 starting time of the song was measured in advance using a clock and inputted into the sag code generator before recording the master, and the subcode generator was driven again at the time of recording. By doing so, a subcode signal is generated and encoded into the main code signal from the VTR tape.

However, in this subcode signal encoding system, the premise is to listen to the music on a VTR tape and measure the first 9 hours of the song, so in reality, the subcode signal encoded song 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 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 read mode for reproducing the videotape on which the marking signal has been recorded by the first means and measuring the generation time of the reproduced marking signal; a third means for performing a program save mode for recording at the beginning of an audio track of a videotape; and a third means for reproducing the videotape on which the measured time data is recorded, and performing the program saving mode based on the reproduction measured time data. A fourth mode for executing a program load mode in which a sash code 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 program check for checking the subcode signal data generated and stored by the fourth means. mode designation keys for designating the marking mode, read mode, program save mode, program load, cutting mode, and program check mode; The present invention is characterized in that the key can be used for specifying a desired marking signal in the marking mode and for specifying a desired number in the read mode and program check mode.

[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 this VTR 110 has a video tape on which a music signal, which is a main code signal to be recorded, has been previously recorded in PCM format on the video track at a predetermined 7000p. Assume that it is loaded.

The video output terminal Tl of the VTR l l Q is P
It is coupled to the main code signal input terminal T2 of the encoder 112 via the CM processor 111.

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 displaying , the control circuit 114 and an audio track recording input terminal T3 of the VTR 110;
and two input/output interfaces 117 .interposed in connection with the audio track playback output T4.
118.

Here, the control circuit 114 includes a marking signal generation section 114a that generates a marking signal (to be described later) in response to a command from the keyboard 115, a subcode signal storage section 114b that stores various data generated as a subcode signal, and a subcode signal storage section 114b that stores various data generated as a subcode signal. It has a time measurement circuit section 114c that generates a time measurement sound based on the audio 1 rank playback output from the VTR 110, 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. 1. The above-mentioned TOC signal and P are generated based on the time chart created by this time chart creation section 114d.

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

A subcode 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 is configured to encode the subcode signal into the main code signal and perform necessary encoding processing according to the CD format (for example, EFM: Eight-Fourteen Modulation), It is assumed that the recording signal output terminal T7 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 this marking is basically placed at the beginning and end of a song, it may also be placed at a break in the song when the index X signal is taken into consideration.

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

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

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

■Disk play start point...A ■Disc play end point...B ■Start of song...C These marking signals are generated using the keyboard attached to the subcode generator 113 for convenient operability. 115
The marking signal generator 114a in the control circuit 114 generates the marking signal in response to the key operation.

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

In other words, by playing vTRIIO, the music signal recorded as PCM on the video track of the videotape is converted into PCM.
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 signal on the monitor 119 through the processor 11.

In this case, each marking signal FM-modulated using the above-mentioned ASCII code generated from the marking signal generator 114a in the control circuit 114 in response to a key operation of the key date 115 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 as described above, the VTR 110 is placed in the playback state again and time measurement is performed. In this case, it goes without saying that the audio track of the videotape is in a playback state.

Input/output interface 118 for audio track playback output (marking signal) from VTRll0
The time measuring circuit section 114c in the control circuit 114 measures the time between each marking point from the starting point of the disc performance.

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.

Furthermore, 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 is stored. It is something that 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.

Thumb p, VTFtllO is put into regeneration 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 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 PCM 7
'A predetermined digital signal or main code signal is input to the encoder 112 via the processor 111, and at the same time, a necessary subcode signal is automatically generated from the subcode generator 113 and input to the encoder 112. 112, 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 by accurately and easily generating a subcode signal and encoding it into a main code signal, and although it is effective, it is not possible to record a master disc. This is inconvenient because it is necessary to perform each of the operations described above each time.

One! Second, unless the above-mentioned operations except the first marking operation are repeated each time on one roll of videotape, subsequent master recordings cannot be made.

Therefore, in order to eliminate such inconvenience, it is necessary to create a time chart obtained in the time chart creation operation, which is the substantial final operation of generating a subcode signal in each operation for the first master recording described above. The data is pre-recorded at the beginning of the audio track of the videotape, in the area before the first marking signal is recorded (this is also necessarily in the recording area of the PGM 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.

Further, even if it is possible to accurately mark a desired position, there may be cases in which for some reason it is better to change the position (particularly the position of the beginning and end of the song).

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

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

In this case, since the time chart data is displayed as the measurement time of each marking point, it is only necessary to change the marking time and marking type to the desired ones by operating the keyboard 115. It generates a code signal.

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.

■Frame structure The frame structure of the subcode is 9 as 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 frang bit indicating the start of a musical tone piece according to the following sign 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 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.

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 0 and 1 at a rhythm of 2 Hz±2% (duty ratio 50±10%).

Channel P can only be changed after sub-symbol synchronization pattern 5O1S1. 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 shown in FIG.

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

0000... Indicates 2 audio channels without groove/emphasis.

1000...Indicates 4 audio channels without emphasis.

X001... Nori Emphasis 50/15μ
s 2 or 4 audio channels. The BR7 assist flag (bit 4 of the control block) can only be changed during an actual nailing of at least 2 seconds.

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

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

-4 CRC: A set of 16-bit CRC on control, address, and data Q, sent MSB first. Parity bits are inverted on disk.

The remainder is checked to see if it is zero. Ru.

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

-1 mode: ADR = 1 = (0001) Mode 1 occupies at least 9 of the 10 consecutive sub-sign blocks. Two different data types are possible in mode 1.

Data between lead intratracks The model is the one shown in Figure 4.

Music and read aloud on disc The data format between tracks is This is the passage shown in Figure 5.

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

00: Lead-in track The end of the lead intratrack is This is the starting diameter of the program area.

01-99: Music number A music piece is a nail with the same music number. Led by Shi. Music number The value starts from 01 and increases by 1. Add. How many copies does one program have? It's stored on that disk If the Ru.

AA: Lead-out track Lead-out track has a nail mark The last of the disc without leading the issue. The music piece begins at the end of the ninth day.

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

Lead intratrack period table of contents X is not valid.

00: Kugishi encoding Kugishi mark in channel Q The northernmost part is currently playing music. Gives a similar length. musical pieces The first piece takes 2-3 seconds (channel (Refer to P.) be led. lead intratu It is encoded as a kuno musical tone.

01-99: Sub-division number Lead-out track period The value of X can only increase by one.

ZEZO: These 8 bits are zero.

MIN, SEC, FRAME: The running time in a musical piece is expressed in 6-digit BCD. That is, MIN, SEC and FRAME each have 2 digits. When the music starts, the time is set to zero. The time increases during the duration of the music, and at the end of the music, the value reaches zero and ends. 7. Opening times for lead-in and lead-out tracks will be 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).IN, ASEC, AFRAME: The running time of the disk is expressed in 6-digit BCD. Notification IN, ASEC
and AFRAME each have two digits. At the start radius of the program area, the running time is set to zero and the TNO contains the value of the first music on the disc. Minutes are stored in dIN and seconds are stored in ASEC. 1 second is subdivided into 75 frames (running from 00 to 74) POINT, PMIN, PSEC, PFRAME
:During the lead-in track, the contents of Table 1 are stored in these locations.

The contents of this table are in the lead-in area. Continuously repeats for (TNO=OO) returned. In each table, the items are He was beaten three times.

At the end of the lead-in area Table contents for any POINT value can be terminated. PMIN.

PSEC and PFRAM 5 provide the music number starting point indicated by POINT. These values define the starting position of the music as the feed time (AMIN, ASEC and AFRA) with N degrees of 1 second.
ME). The starting position of the music is the first position of the new music number, which is XN00. If also L POINT=AO, then P
The value of MIN gives the first TNO on the disk, PSEC and PFRAME are zero. If POTNT = A1, the value of PMIN gives the last TNO on the disk and PSEC and PFRAME are zero. If POINT = A2, PMIN, PSEC and PFRAME give the starting position of the lead-out track. Table 1 gives an example of encoding when six songs are included on one disc.

-2 Mode 2: ADR=2= (0010) If mode 2 is presented, it occupies at least one of the 100 consecutive sub-code blocks.

The data format in mode 2 is This is the passage shown in FIG.

N1 to N13: Disc catalog number expressed in 13-digit BCD. Uses UP0/EAN code (BAR encoding).

The catalog number (number) is It does not change on the disk.

Code based on UPC/KAN code If there is no standardized catalog number In this case, N1 to N13 are all zero or removes mode 2 from disk I can do it.

ZERO: These 12 bits are zero AFRAME: Continuation of AFRAME in mode 1 (2 digit BCD running from 00 to 74). Duration of lead-in area (TNO=OO). These 8 bits are zero.

■-3 Mode 3: ADH= a = (o O11
) If mode 3 is presented, it 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). 15RC is determined by DIN-31-621. If ISR codes are not used, mode 3 must be deleted. Mode 3 for the 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 This is the guide shown in Figure 7. l5RC Co. The 12 characters of C are from 1 to 112. is provided. The country code is ■Given by 1 to I2, work 3 ~Engineer 5 gives the owner code, ■6 to ■7 indicate the record year. I8-112 are record manufacturing It's a number. ■Characters from 1 to I5 are Coat with 6-pit type according to table. It has been decentralized. Engineering 6-112 The digits are 4-bit BCD numbers.

00: These 2 bits are zero ZERO: These 4 bits are zero AFRAME: Continuation of AFRAME in mode 1 (2-digit BCD of running from oo to 74t). During the lead-in area (TNO=OO), these 8 bits are zero.

■Channel R, S, T, U+V, W These channels are zero, these other data while accessing the location of I'm not allowed to write.

Diagram M8 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 layout diagram of the subcode generator 113, which has an operation key section 200 corresponding to the key date 115 described above and a display section SOO corresponding to the display 116. ing.

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,H1 method D key 2θ2 ,M,CHAMG.

In addition to the key 203, INDEX key 204, P, OUT key 205, M, and END key 206, VERIF
Y key 207.5 TART key 208.5 TOP key 2
09, and numeric keys 2xo, 211.0 to 9, which are displayed in the lower part of the figure. zi2 (however, 0 to 6 are the above 201 to
207 is also used) and the above 1 to 6 number keys 20
MARK key for mode specification, READ key, 5AVE key, which has a display on the key itself that is used as 2 to 207;
LOAD key, CUT key, CHECK key and above 20
8,209 is also used as an S with an indication in the lower part of the illustration.
I have the TEP key, ENTER key and money.

In addition, in the operation key part 200, KYE MODE! is displayed in the upper and lower parts of the illustration. Light emitting diode LED as indicator
I, LED2 is coated.

The display section J o o each has a display of two digits M on the upper part of the diagram, each consisting of a 7-segment light emitting diode.
ODE display 301, TNO display 302, index X display 30g, MIN display 304, sEc display sos, A, MZN display 306, A, SEC display 3
07 and 1 digit A, FRAME display 30B, and (catalog number) CATA of Nl-N13, which has a display in the lower part of the illustration and is used as each of the above-mentioned displays 302 to 30B.
It has a LOG NUMBER display.

Note that there is a MUS between the operation section 20Q and the display section SOO.
Light emitting diode as IC and LEAD-IN indicator)
'LED3 r LED4 is 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) 7'of, F These keys are operated at the beginning of the room area.

CM, HEAD key 2o2] This is the key operated at the beginning of the song.

(M, CHANG, key 2o3) This is the key that is operated when the song changes without any pauses.

[: INDEiX key 204] This is a key operated when incrementing the index xl.

[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 2o7) This key is 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. be.

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

This key is operated to stop processing and wait for mode specification in read mode, program save mode, program load mode, and cutting mode.

[Numeric keys 0-9 201-207.21θ-212]
TNO and Q signal mode of first song in read mode
- When entering data in 2 and checking the zologram (
This is the key operated when entering numbers in change) mode.

[5TEP key 208] TNO and Q of the first song in read mode (Read out and check or change the program information written in advance when inputting mode -2 data of g number and during program check (change) mode) Chill with the key operated when doing so.

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

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

(MODE display 30)] Each operation mode is displayed with numbers and alphabets, and the 13 types of alphabets a used in this case are
Hb HOHd t e r f r h tl T
j + Z r p r u , O is displayed in the form shown in FIG.

[: TNO, X, MIN, SEC, A, MI
N, A, SEC, A, FRAME display 302-3
08] In lead mode, cutting mode, and program check (change) mode, the track number (TNO), index (X), minutes, seconds (MIN), and (sEc) of the song time, starting from the beginning of the first song. The absolute time minutes, seconds (A, MIN), (A, 5EC), and absolute frames (A, FR product) are displayed numerically.

(CATLOG 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 LED 3) 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 LED1, LED2:1 Lights up depending on which of the above-mentioned operation keys is in the upper or lower operation state.

In the above, each operation mode is defined as follows [Marking (MARK, ) mode] This is a mode for marking the beginning of a song, etc. on the audio track of a videotape.

[READ mode]

This mode creates the data necessary to generate a subcode (EFM) signal from the marking signal recorded on the audio track of the Video Teso.

[Program safe' (5AVE) mode] This is a mode in which data necessary for generating a subcode (EFM) signal is recorded at the beginning of the audio track of the video tape.

[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] Subcode (E
FM) Signal generation mode As mentioned above, this mode generates a subcode signal to be encoded into the main code signal, and then causes the encoder to perform the necessary encoding processing to derive the master recording signal. be.

[Program check (CHECK) (change) mode] This mode is for checking and changing the time of 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 Fig. 11, by turning on the power, the system enters the mode specification waiting state (however, this state is also designed so that it always returns temporarily to this state even when each operation described later is completed. ) tb enters standby state.

The mode specification from the standby state is 1 to
This is done by selectively operating operation keys for specifying each mode, which also serve as the number keys 202 to 2θ6.

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

1...Marking (MARK, ) mode 2...Read (READ) mode 3...Program save (5AVE) mode 4...
・Program load (LOAD) mode 5... Cutting (CUT, ) mode 6... Program check (change) (CHECK) mode And the first thing specified is marking (MARK, ) mode.
) mode, p1, followed by P, IN, M, I (EAD, M, C) IA, which should be operated in marking mode.
N.G.E.

The shimmering operation is performed by operating the INDEX, P, OUT, M, and END operation keys 201 to 206 according to a related check program as shown in FIG. 12, for example.

The M and END keys 206 operated at the end of the song are
If the P, OUT key 205 is operated within 10 seconds after the key 206 is pressed, the operation of the key 206 is changed to P,
Interpret it as an operation of the OUT key 205 and press 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 M and HEADO can be omitted, but in this case, M and END are M,
It is processed as being, for example, 3 seconds before HEAD.

Here, when the M, END key, M, and HEAD 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 want to end (including cancel) the marking operation, you can operate the 5TOP key 209'; f: to enter the standby state described above.

Furthermore, the M and HEAD key operations after P and IN may be omitted; in that case, for example, 3 seconds after P and IN, M
, 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 Figure 14, the READ mode is specified, and this is an operation that reads the marking signal marked on the videotape in the marking mode and creates lead-in information (Toe data) and program information. It is something that cannot be done.

Therefore, it goes without saying that it is 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 TNO can be entered as follows.

For example, to enter "16" as the TNO, first press the number key "1", then press the ENTER key, and finally press the number key "6". The display format is shown in Figure 15(a).
(b) P as shown in (C).

If you enter the wrong number, press ENTER key 209
After pressing ' to move the cursor (decimal) point back to the upper digit, press the correct number key.

Then, once the TNO data input is complete,
Next, operate the 5TEP key 20B to enable input of the catalog number, and enter the 13-digit catalog number in the same manner as the above-mentioned method for entering the TNO.

When you have finished inputting the catalog number in this way, operate the 175TEP key 208 again (if the catalog number is 60#, immediately press the 5TEP key 208).
(You can do this by operating the P key 20B) In particular, the mode is set in which the previously marked marking data can be read.

This mode is shown in FIG.
TR110' (You can operate the 5TART key 208 after entering the i-play state.

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

If reading error display 2E is displayed during this time, V
All you have to do is rewind TRI JO and fix some of the strange operations.

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
E) mode, in which case the videotape should be rewound to about 2 minutes earlier than the marked part.

Then, with the VTR 110 in the post-recording state, 5TART
Operate the key 208 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 (VERIFY) the videotape.
) mode.

As a result, when reading is performed and the reading completion display 3F appears, the VTR 110 is stopped and the 5TOP key 209 is operated.

In this case, if the reading error display 3E is displayed, the operation can be repeated from the beginning.

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

In this case, the videotape is set in advance at the portion before the above writing, and then the VTR 110 is put into a playing state and the START key 208f is operated.

As a result, when the program is loaded and the loading completion display is displayed, the VTR 1zOfi) is stopped and the 5TOP key 209 is operated.

If the reading error message 4E is displayed during this time, you can try to correct Shinsaku again.

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 the 5TEP key 20B without checking the data, and if there is anything that needs to be changed during this time,
This can be done using the program change mode described later.

In other words, this program check (CHECK) (
Change) mode is program data 5TEP key 20B
Each time the button is pressed, one state (one command) is displayed, and the program data can be changed as necessary.

i20 diagrams (,) to (b) are the 5TEP keys 20B mentioned above.
This shows a display example of each data displayed by the operation.

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

As shown in (,), use the ENTER key 209 to move the cursor (decimal point) to the part to be changed and press the number key to be changed (the figure shows M, when the HEAD time is delayed by 3 seconds) An example of changing A, 5E014 seconds to 11 seconds is shown).

Next, as shown in Fig. 22, external cutting (CUT,
) mode will be explained.

In this case, first set the videotape in a predetermined state for cutting, then hold the VTRJJO in a paused state, operate the CUT key 206.5 and the TART key 20B, and then release the paused state of the VTRIJQ. to start cutting, and when the end of the program for cutting is displayed, operate the 5TOP key 209.

In this case, first, the data in the serial in area is output by operating the 5TART key 20B, and then the data in the series lead-in area is output.
oyo, 9 P, IN data enters or 5TART
By operating the key 20B, the data in the program area is output, and finally, when the data in the program area is finished, the data in the lead-out area is output. MUSIC indicator LED3, LEAD-IN indicator LE
The display state of D4 is as shown in FIG.

In FIG. 20, (f) is a display that appears when the interval between M, END, and M, HEAD is less than 2 seconds, 2 seconds before M, CHANG. 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 account and correct it.

Next, we will explain matters that can contribute to simplifying the configuration in the above specific example.
Regarding the section, some of the operation keys have markings (
P, IN keys 20, M, HEAD keys 2 o, which are displayed in the upper part of the diagram, are used in MARK) mode.
2, M, CHANG key 203, INDEX key 20
4, P, OUT key 205, M, END key 206 and VERIFY key 207 used in program sage (5AVE) mode are located in the lower part of the figure used in read mode and program check (C) (ECK) (change) mode. MARK, which is also used correspondingly to the numeric keys O to 6 among the numeric keys that have a display, and has a display on the key itself that is used when specifying the mode
key, READ key, 5AVE key, LOAD key, C
By being shared with the UT key (however, the P and IN keys 201 are excluded), the number of keys required as a whole is significantly reduced, contributing to cost reduction and improvement of the panel space factor. In order to ensure that these three types can be used interchangeably, that is, used properly, key modes are associated with the upper and lower parts of the diagram to indicate which side of the key is being operated. The key point is that a KEY MODE indicator consisting of light emitting diodes LED1, LED2, etc. is provided to display the information.

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 features is that the same display can display each mode and the progress state in each mode.

Therefore, the MODE display 301 is composed of two-digit displays each made of a seven-segment emitting diode, and a number is associated with each one-digit display according to the operation of the mode designation key. Displays modes 1 to 6,
The other 1 digit is the Alpha Pera F a r t, which is associated with the progress status of each mode from 1 to 6 above.
r e F d p e Hf r b r 1 r
J r L r p + u + O (however, the actual display format is as described above), and each mode and the progress status of each mode can be displayed by changing the display format. p1 It is possible to display on the same display, but if this configuration was not adopted, it would be necessary to provide a number of displays corresponding to the number of modes and the number of progress states for each mode. This is because the number of required displays can be significantly reduced compared to the above, contributing to cost reduction and improvement of the panel space factor.

For some 200 operation keys, START key 2
θ8.5 Step (5TEP) key and ENTER key that are also used in correspondence with the TOP key 209.
) keys are configured to be isometrically usable in two modes: read mode and program check (change) mode. by this,
TNO and Q signal mode of the first song in read mode
2. The function of inputting data (including correction) and the function of reading and checking or changing program information previously imported in the program check (change) mode can be reasonably performed using the same key. C,
Compared to providing these keys separately for read mode and program check (change) mode, this reduces the number of keys required, contributing to cost reduction and improvement of panel space factor. be.

As for the display section 300, each 2-digit TNO display 302 and index
SEC indicator 304, A, MIN indicator 305, k, 5
Since the F2c display 306 and the 1-digit A, FRAME display 307 are also used as the catalog number display for N1 to N13, which has a display in the lower part of the figure, the number of displays required as a whole can be reduced. The advantage is that it can contribute to cost reduction and improvement of the panel space factor by significantly reducing the amount of space required.

In this case, the MODE display 30 cannot be used to display that the catalog number is being input (displayed) in read mode, but the remaining displays 301 to 3-07 for displaying program information It is important that the catalog number, which requires 13 digits, be displayed in just the right amount.

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

First, in the marking mode, the M and END keys 206, which are operated at the end of a song, are pressed if the P and OUT keys 205 are operated within a predetermined time, for example 10 seconds, after the keys 206 are pressed. 206 operations f, I P, OUT
The point is that the operation of the P and OUT keys 205 is ignored as it is interpreted as an operation of the P key 205.

The purpose of operating the Tsumushi, P, and OUT keys 205 is to specify that the program area ends and the program area enters the lead-out area without changing the settings. It should be operated at the end of the 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 θ5 was operated, it is the point at which the original program area should end and the lead-out area should be entered, when the M, END key 206 is operated, P, OU.
This means that it is assumed that the T key 205 has been operated.

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, HEADO as if it had occurred a predetermined time, for example, 3 seconds, it is possible to omit the key operations for M, END before M, HEAD, and the operation becomes easier. One point is that it has been simplified.

When the M, END key, M, and HEAD key are operated intermittently at a relatively fast cycle, the former will accept the last one if the intermittent interval is less than a predetermined time, 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, it is possible to omit the key operations of M and HEAD after p, P and IN. The main point is that the operation has been simplified accordingly.

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

M, HEAD, M, CHANG, INDEX
, P, OUT, M, END, as mentioned above, is important in that, in consideration of ease of later processing, ASCII codes coded as different signals are used by FM modulation. .

Next, the reliability of operation is ensured by providing a function to check saved data as a verify (VERIFY) mode during the program save (5AVE) mode.

Also, program check (CHECK) (change)
In this mode, each time the 5TFJP key 208 is operated, the programmed data can be displayed and checked one state at a time, ensuring reliable operation. Can be mentioned.

If there is any data that you would like to change during this check, you can easily change the p1 program data by pressing the ENTBR key 209 to move the kernel to the part to be changed and operating the numeric keys to be changed. It is also important that this is done as follows.

Another advantage is that the reliability of operation is ensured by allowing the syntax sniper display 2d due to a mark error to occur in the READ mode.

Similarly, read error indicator 2E in read mode, write operation indicator 3 in verify mode, read error indicator 4 in program load (LOAD) mode.
Since E is made to appear separately, it is possible to ensure reliability of operation in each 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. Furthermore, in the cutting (, CUT,
, by inputting IN data or by operating the 5TART key 208, ! The data in the 7f program area is output, and finally, when the data in the program area is finished, the data in the lead-out area is output, thereby ensuring ease of operation and reliability. can be mentioned.

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 organic combinations can provide highly functional and highly desirable subcode signal generators.

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

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, P
It 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. It is a diagram for explaining a specific example of the diagram. 110...VTJ2JJ...PCM processor, 1
12... Encoder, 113... Subcode signal generator, 114... Control circuit, 115... Keyboard, 116... Display, 117.118... Input/output interface, 114a... Marking signal generation section, 114b... Subcode signal storage section, 114c...
- Time measurement circuit section, 114d... Time chart creation section, 200... Part of operation key, 30o... Display section, 2
01 ・P, IN key, 20, ? -M, HEAD key, 2o3...M, CHANG, key, 204...
・INDEX key, 205...P, OUT key, 20
6...M, END key, 207...VERIFY key, 20B ・5TART key, 209...5T
OP key, 200 to 12... Number keys, 202...
・MARK key, 2Q3...REA key, 204...
・SAVE key, 205...LOAD key, 206
...CUT, key, 207...CHECK key, 2
08...5 TEP key, 209...ENTER key, 30...MODE display, 302...TNO display, 303...Index (X) display, 304
...MIN display, 305...SEC display, 30
6...A, MIN display, 307...A, SEC display, sog...A, FRAME display, 302~
30B... Catalog number display, LEDl, L
ED2...KEYMODE indicator, LED3...M
IJSIC display, LED 4...Lead-in display. Applicant's representative Patent attorney Takehiko Suzue Figure 11 Figure 12 Figure 13 Figure M, HEAD Figure 14 Figure 16 Figure 18 Figure 19 Figure 20 (a) (P, IN) (b) (M , HEAD) MODE TNOX M
IN (c) (INDEX) (a) (P, OUT) MODE TNOX M
INMODE TNOX
MINFigure 21Figure 22Music LEAD-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 generation time of the reproduced marking signal; a third means for performing a program save mode for recording at the beginning of an audio track of a videotape; and a third means for reproducing the videotape on which the measured time data is recorded, and performing the program saving mode based on the reproduction measured time data. A fourth module executes a program load mode in which a subcode signal corresponding to the main code signal is generated and stored.
means, a fifth means for performing a cutting mode for transmitting the subcode signal generated and stored by the fourth means, and a program for checking the subcode signal data generated and stored by the fourth means. and a sixth means for executing a check mode, and separately providing mode designation keys for designating the marking mode, read mode, program save mode, program load, cutting mode, and program check mode, and each of these modes. A sub-code signal generator characterized in that a designation key is configured to be able to be used for designating a desired marking signal in a marking mode and for designating a desired number in a read mode and a program check mode.