JPH061594B2 - Rotating recording medium - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating recording medium, and in particular, it is controlled by an external device (including an input / output device) having a judgment function together with a video signal and an audio signal to be simultaneously reproduced. The control program for this is a disk-shaped rotation recording in which the modulated wave signal modulated by the self-clocking modulation method is used alone instead of the audio signal of one channel or is time-sequentially synthesized with the audio signal. A medium (hereinafter referred to as "disk").

2. Description of the Related Art In order to more effectively use an information signal recorded on a disc, a device having a judgment function, such as a personal computer, is connected to the outside of the disc reproduction device, and the disc reproduction device is controlled by the personal computer. Has been practiced since the past. For example, when a personal computer is connected to a device for reproducing a video disc in which a video signal and an audio signal are recorded in a spiral or concentric track as a change in geometrical shape, the video disc is so-called interactively. It can be played and the video disc can be used for a wide range of purposes such as education, games and the like. When a personal computer is connected to the audio record disc playback device, the playback sound of the audio record disc and an image related to the playback sound generated by the personal computer can be displayed on the monitor. It is possible to make the reproduced sound more varied.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Here, in order to control a disc reproducing apparatus by a personal computer or to generate information related to a disc reproducing signal by the personal computer, it is natural that a control program is set in the personal computer. Need to load. However, since the control program is not recorded on the video disc, the control program must be prepared separately. Therefore, the more types of the video disc, the more control programs are stored separately. It was necessary and there was a problem such as taking up space for storage. Further, in the conventional method of controlling the video disc reproducing apparatus by the personal computer, only the information from the personal computer is supplied to the video disc reproducing apparatus, and the personal computer cannot detect the state of the video disc reproducing apparatus. It was

On the other hand, some of the audio record discs have a control program recorded on the inner peripheral portion of the disc as proposed by the present applicant in Japanese Patent Application No. 57-160327. However, since the control program recorded on this audio record disc is recorded on a different track from the audio signal recording track, the recording capacity of the audio signal is reduced by the recording amount of the control program. The desired operation could not be performed unless all control programs were loaded on the personal computer. Therefore, in order to enjoy the image generated by the personal computer and the reproduced sound of the audio record disc at the same time, it is necessary to wait the reproduction time of the above-mentioned recorded control program, and it takes time until the reproduction of the audio signal is started. It was hanging. Further, the personal computer needs to store all the above-mentioned recorded control programs at one time, so that the storage capacity becomes large, and furthermore, the personal computer does not have any control over the audio record disc reproducing apparatus and interacts with it. We couldn't control the format.

Therefore, the present invention solves the above-mentioned problems by synthesizing at least a control program written in a program-controlled executable statement and a direct executable statement into one audio signal in time series or by recording them independently. The object is to provide a disc that can be used.

Means for Solving the Problems The present invention relates to an input / output command of a device having a judgment mechanism such as a computer connected to the outside of a device for reproducing a rotary recording medium, an internal processing command thereof, and a control command for the reproducing device. And at least the direct execution statement written in the program control type execution statement and the direct execution statement, and having the execution priority of the program control type execution statement and the direct execution statement in the external device. The control program is a modulated wave signal that is modulated by a modulation method that allows self-clocking based on a reference clock that has a period that is a natural multiple of the horizontal scanning period of the video signal and that is band-limited to the audio signal band. Then, the modulated wave signal is converted into a video signal instead of the audio signal in a unit of a period of approximately one field or is combined in time series with the audio signal. Both of them are recorded on the same spiral or concentric circular track in synchronization with the horizontal synchronizing signal, and one embodiment thereof will be described below with reference to the drawings.

Embodiments Before describing a disc according to the present invention, first, a method of creating a control program signal recorded on the disc according to the present invention and a data structure will be described. FIG. 1 shows an example of an outline of a method of creating a control program or the like. As shown in the figure, based on the scenario 1, the video signal is generated by the television camera 2, further edited, and recorded on the magnetic tape by the VTR 3. The audio signal based on the scenario 1 is generated by the microphone 4, further edited, and recorded in the tape recorder 5. Further, based on scenario 1, a program control type executable statement, a direct executable statement, and a control program written as a data statement as necessary are created in a high-level language independently of the generation of the above-mentioned video signal and audio signal. And a linkage program is created. In addition, when creating this program, the address of the jump instruction is specified by the label,
In addition, screen coordinate designation (for example, locate, light pen command, etc.) uses X and Y coordinates as percentage expressions. This is because the size of the screen of a personal computer or the like differs depending on the model, so that no matter what type of personal computer is used, the image is displayed at the intended screen position as much as possible.

This control program is translated into an intermediate language peculiar to the present invention by the editor compiler 6, and then a simulator debugger 7 performs simulation based on the control program translated into the intermediate language to detect and diagnose an error in the program, If there is, modify the control program created in high-level language,
It is simulated again through the editor compiler 6. In this way, the control program written in the intermediate language is created. Thereafter, this control program refers to the label table 8 and considers the intervals between labels (intervals between scenes to be inserted) and the order, and also considers the execution statement position of the subroutine. It is corrected again and finally inserted at a predetermined time position to create a control program.

On the other hand, the video signal reproduced by the VTR 3 and the audio signal reproduced by the tape recorder 5 are subjected to predetermined signal processing described later, and are added with address signals such as a track number and a time code (time address). Further, the original information data of the above control program is subjected to the processing described in detail below in the block shown by the linkage editor in FIG.

That is, although the original information data block length of the control program is variable, it is 6n bytes (n is a natural number).
It applies to the fixed-length data block indicated by. For example, 6 bytes when the original information data block length is 6 bytes or less, 24 bytes when the length is 49 bits or more and 24 bytes or less, and 48 when it is larger than 24 bytes and 48 bytes or less.
If the byte size is larger than 48 bytes and 96 bytes or less, the block length of 96 bytes is applied. If the original information data length is shorter than the fitted fixed-length data block, dummy data is inserted into the remaining data length. This is for rearranging data described later.

Here, the control program is a device such as a personal computer, a game device, or the like having a discriminating function to be connected to the outside of the disc reproducing device, a control command of the disc reproducing device described later, its subcommand (for example, video special effect), Input / output control commands for input devices (including input devices), and internal processing commands for the device (eg assignment statements,
Arithmetic operations, random numbers, subroutine stacks, etc.), and as described above, they are written in program control type execution statements, direct execution statements and data statements (however, there may be no data statements).

The above-mentioned program-controlled executable statement is in the form of a program package consisting of a plurality of command strings, and is an executable statement executed after all of these command strings are stored in the computer. The above-mentioned direct execution statement is composed of a single command, and is an execution statement which is immediately executed without being stored after being input to the computer.
Further, the data sentence is composed of numerical data, character data, computer processing data, and the like.

The present invention records a direct execution statement that prioritizes the execution of the above program control type execution statement or direct execution statement of an external device (or transmission of the program control type execution statement or direct execution statement to the external device of the playback device). The feature is that the reproducing apparatus can selectively execute the same control program signal sequence, as will be described later. That is, among the direct execution statements, the commands shown in the following table are provided as the execution priorities of the program control type execution statement and the direct execution statement.

As will be described later, the external device does not execute the program-controlled executable statement after execution of the "RUN" instruction in Table 1 or suspends execution by the "BREAK" instruction in Table 1. As long as it is, other incoming program-controlled executable statements and direct executable statements are ignored. A direct execution statement having a direct execution statement that gives priority to execution in such an external device, a program control type execution statement, and a control program written as a data statement as necessary, are transmitted to a disk 10 described later by an electric signal. It is recorded in the form of.

As described above, the information data of the control program is 6
It is applied to a fixed-length data block represented by n bytes (n is a natural number), and then divided into 6-byte units.
An information header 1 byte is added to the beginning position of each 6-byte divided data. FIG. 2 shows that a 1-byte header indicated by HE is added to the beginning of the divided 6-byte information data D0 to D5. Next, the above-mentioned 7-byte data HE, D0 to D5
Are divided into upper 4 bits and lower 4 bits, and an error correction code of 3 bits and a parity of 1 bit are added next to each information bit of the upper 4 bits. Similarly, for each information bit of the lower 4 bits, an error correction code of 3 bits and a parity of 1 bit are added. FIG. 3 shows the above-mentioned upper 4 bits or lower 4 bits of information bits b1 to b4, and 3 bits of error correction codes b5 to b7.
A data structure including a parity bit b8 is shown.

The values of the bits b1 to b8 shown in FIG. 3 are selected as shown in FIG. 4, for example. As described above, the 1-byte information data having the configuration shown in FIG. 2 is added with 4-bit check bits b5 to b8 as shown in FIG. 3 for the upper 4 bits and the lower 4 bits, respectively. The block having the structure shown in FIG. 2 is made up of 14 bytes as shown in FIG. In FIG. 5, HE _U and HE _{L respectively} indicate the upper 4 bits and the lower 4 bits of the header indicated by HE in FIG. 2, and similarly the subscript U of D0 to D5 is the original information data D0 shown in FIG. ~ D5 indicates the upper 4 bits, and the subscript L indicates the lower 4 bits. Further, in FIG. 5, H indicates a 4-bit check bit for detecting and correcting an error of 4-bit information data immediately before it.

Next, the 14-byte data shown in FIG. 5 is rearranged (so-called scramble or interleave) in order to minimize the influence on the burst error during reproduction. If the 14-byte data shown in FIG. 5 is divided into 1-byte units and numbered as shown in FIG. 6 (A), these data are rearranged as shown in FIG. 6 (B). After that, 14
A 1-byte framing code is added before the byte data to indicate the start of the data. This framing code 1 byte and program information 1 after scramble
A total of 15 bytes of signal consisting of 4 bytes has a 1-bit transmission period of 2H (where H is a horizontal scanning period),
In addition, as shown in FIG. 7, when the recorded video signal is of the NTSC system, it is output over a total of 240H from the 21st scanning line number to the 260th scanning line number (284th to 523th scanning line number). After being modulated by a self-clockable modulation method, which will be described later, the cutting device 9 shown in FIG.

In this way, the control program divides the original information data into 6 bytes and records the data in 15 bytes including 1 byte of the framing code, approximately every 1 field period. In FIG. 7, G1 and G2 are recorded. It is not transmitted during the period of 22.5H shown in each. This is because the pickup reproducing element of the reproducing device, which will be described later, is set to, for example, the 11th H
This is to ensure that the control program signal can be reproduced even when the track is forcibly changed near the eye (or the 274th H) and special reproduction is performed.

Next, the signal recording system will be described in more detail. FIG. 8 shows a block system diagram of an example of a recording system for recording the rotary recording medium of the present invention. In the figure, reference numeral 15 is a control program generator which generates and outputs a control program signal in the form of an electric signal by the method described with reference to FIGS. 1 to 7 at the timing shown in FIG. .
An NTSC color video signal is generated and output from the color video signal source 16, and audio signal sources 17 and 18 are output.
From which audio signals of the first and second channels are generated and output, respectively. The control program signal taken out from the control program generator 15 is as shown in FIG. 9 (B).
Since it is an NRZ (non-return-to-zero) signal and is not suitable for signal recording / reproduction as it is, a modulation method capable of self-clocking by the modulator 19, for example, an FM (frequency modulation; bi-phase space modulation) method is used. The signal is modulated into a signal as shown in FIG. 9 (C).

The modulator 19 is a synchronizing signal separation circuit 27 shown in FIG.
The horizontal synchronizing signal f _H shown in (1) is divided by, for example, 1/2, and biphase space modulation is performed by using this 1/2 divided output as a reference clock. As shown in FIG. When it is "1", it outputs a modulated wave signal which is alternately inverted at cycle 1H, and when data is "0" it is inverted at cycle 2H. The modulated wave signal has less direct current component and more clock component than the NRZ signal, and is suitable for recording and reproduction, and is low-pass filtered by the low-pass filter 20 and delayed by about 1H. The waveform is substantially sinusoidal as shown in FIG. 9 (D). As is clear from FIGS. 9A and 9D, the output signal of the low-pass filter 20 is such that the phase of its peak value and the phase of the horizontal synchronizing signal substantially correspond to each other. In the reproducing apparatus, the data can be demodulated using the reproduced output of the horizontal synchronizing signal without reproducing the clock component from the signal.

The control program signal, which has been band-limited and delayed as described above from the low-pass filter 20, is supplied to the switching circuit 21. The switching circuit 21 selectively outputs the control program signal, and selectively outputs the audio signal of the second channel from the audio signal source 18 during the period when the control program signal is not generated and output. Therefore, the output signal of the switching circuit 21 becomes a signal in which the audio signal of the second channel is time-sequentially combined with the control program signal only during the period when the control program signal is not generated and output. The output signal of the switching circuit 21 is supplied to the frequency modulator 23, where, for example, 3.73 MHz ± 75 _K H
The frequency-modulated wave f _{A2 of} z is supplied to the mixer 33. On the other hand, from the frequency modulator 22, the frequency-modulated wave f _{A1 of} , for example, 3.43 MHz ± 75 _K Hz, which is frequency-modulated by the audio signal of the first channel, is taken out and supplied to the mixer 33.

On the other hand, NTSC extracted from the color video signal source 16
The system color video signal is supplied to the comb filters 24 and 25, respectively. The comb filter 24 is a 2.56M described later.
Performs comb filter operation in a band of 2 MHz or more in order to perform band sharing multiplexing of carrier color signals that have been low-frequency converted to Hz.
The separated luminance signal that is the output is supplied to the low-pass filter 26. The low pass filter 26 band-limits the upper limit frequency of the luminance signal to about 3 MHz. In addition, the comb filter 2
A carrier color signal having a band of 3.58 MHz ± 500 _K Hz is taken out from No. 5 and is input to each of the color subcarrier generator 28 and the color signal conversion circuit 29. The color subcarrier generator 28 carries a burst gate pulse generated from the sync signal separated by the sync signal separating circuit 27 from the output luminance signal of the low-pass filter 26 and a color burst signal in the carrier color signal by a known method. Frequency f _SC equal to the color subcarrier frequency of the color signal
Generates continuous wave (3.579545MHz for NTSC color video signal). On the other hand, the color signal conversion circuit 29 sets the frequency of the continuous wave from the color subcarrier generator 28 to 12/7, beat-converts this signal and the input carrier color signal, and outputs the color of (5/7) × f _SC . The carrier color signal that has undergone the low-frequency conversion of the subcarrier frequency is output.

The low-pass-converted carrier color signal is used as the low-pass filter 2
The band-limited luminance signal from No. 6 is band-multiplexed and multiplexed by the mixer 30, and the pre-emphasis circuit 31 performs appropriate pre-emphasis, and then the signal is supplied to the mixer 33.

Further, a continuous wave equal to the color subcarrier frequency f _SC extracted from the color subcarrier generator 28 is supplied to the reference signal generation circuit 36 together with the sync signal separated by the sync signal separation circuit 27. The reference signal generation circuit 36 generates a burst-like first reference signal f _P1 at a frequency (1/5) f _SC during a four-field period equal to one rotation period of the recording master, and a frequency during the next four-field period. (1/7) f _SC are alternately repeated every four field periods to generate a second reference signal f _P2 bursty in and outputs the reference signal that occurs to the output terminal 38, the reference signal f _P1 And a reference signal f _P3 having a frequency of (1/13) f _SC , for example, is generated for about 3H and supplied to the mixer 35 in correspondence with the switching connection portion of f _P2 . FIG. 10A shows a horizontal synchronizing signal and a vertical synchronizing signal in the vicinity of the vertical blanking period separated from the video signal to be recorded,
The reference signal f _P3 is generated during a period substantially corresponding to the vertical synchronizing signal as shown in FIG. 10 (C), and the first and second reference signals f _P1 and f _P2 are shown in FIG. 10 (D). As 1
It is generated in H cycles.

FIG. 10 (B) is a chapter address signal _{A C,} the time address signals _{A T} and track number address signal _{A N}
Is the 17th scanning line number shown at the top of the waveform in FIG.
It is shown that the address signals are transmitted within each 1H period of the 18th, 18th and 20th eyes, and these address signals are supplied to the mixer 33 from the input terminal 32 shown in FIG. Here, the chapter address signal A _C is an address signal indicating the signal recording position of the disc in the order of the recording program, the time address signal _AT is the address signal indicating the total time, and the track number address signal A _N is for one revolution of the disc. This is an address signal indicating the number of tracks when one track is formed with the recording position of the reference signal f _P3 as the starting point, and each of these address signals is composed of 29 bits.

FIG. 11 shows an example of the signal format of the track number address signal A _N. In the figure, a fixed pattern synchronizing signal is arranged from the 1st bit to the 4th bit indicated by SYNC, a line identification code is arranged in the next 2 bits, and a voice identification is further arranged in the next 2 bits. Code is placed. The line identification code is a code for identifying the scanning line number when this address signal is transmitted, and the voice identification code is a code indicating the type of the recorded voice signal (for example, stereo, monaural, bilingual, etc.). Furthermore, the ninth
A code indicating a track number is arranged in a total of 20 bits from the bit bit to the 28th bit, and the last 1 bit is a parity bit. Here, in the code indicating the track number, each 4 bits shown by 40a to 40e in FIG. 11 has a structure in which the numerical value of the digit of the millionth, the hundredth, the tenth and the one of the track number is expressed in hexadecimal notation. . However, the number of tracks is 54,000 at the maximum in the case of a disc capable of recording up to 60 minutes per side. Therefore, 4 shown by 40a
The maximum value of the bit is "5" in the hexadecimal system, which is "0101" in the binary system. Therefore, the most significant bit of 4 bits shown by 40a, that is, the 9th bit of the track number address signal ( (Shown with diagonal lines in FIG. 11)
It can be seen that is always "0".

Therefore, in this embodiment, one bit of the ninth bit is used to determine whether or not the control program signal is recorded,
When this 1 bit is "1", it is used as a code indicating that the control program signal is recorded from the 21st scanning line number (the 284th scanning line number) to the 240H period.

The signals supplied to the mixer 33 as described above are multiplexed here, frequency-modulated by the frequency modulator 34 shown in FIG. 8, and further supplied to the mixer 35. As a result, a mixed signal of the frequency-modulated wave signal output from the frequency modulator 34 and the reference signal f _P3 is extracted from the mixer 35 and output to the output terminal 37.

FIG. 12 shows an example of the frequency spectrum of the recording signal. I represents the 2.3 MHz carrier shift frequency band of the frequency-modulated luminance signal, fa is the frequency of 6.1 MHz corresponding to the sync tip, and fb is 6.6 M corresponding to the pedestal.
Hz frequency, fc is 7.9 MHz corresponding to white peak
Shows the frequency of. II _L and II _U represent the lower sideband and upper sideband of the frequency-modulated luminance signal, and III _L and III _U represent the lower sideband of the frequency-modulated waves f _A1 and f _A2. Band, upper sideband. IV indicates carrier waves of f _A1 and f _A2 , 3.43 MHz and 3.73 MHz. As described above, the bi-phase space modulated control program signal is time-sequentially combined with the audio signal of the second channel to produce 3.73M.
A carrier wave of Hz is frequency-modulated, and a predetermined carrier wave is frequency-modulated by the frequency-modulated wave f _A2 thus obtained, which is recorded in a signal form.

Further, in FIG. 12, V indicates the frequency band of the low-frequency conversion carrier color signal extracted from the color signal conversion circuit 29. Further, the first sideband generated by frequency-modulating the low-frequency conversion carrier color signal by the frequency modulator 34 is VI _L , VI
_U and the second sidebands are designated VII _L and VII _U , respectively.
In FIG. 12, the frequency spectrum represented by the solid line shows the frequency spectrum of the signal recorded on the disk.

The reference signals f _P1 , f _P2, and f _P3 are in the band VII _L
Located in the lower open frequency band. Reference signal f
_P1 ~f ₃ the band occupied by the information signal to each of separation is the need to play in the same styli.

The information signal and the reference signal taken out from the output terminals 37 and 38 shown in FIG. 8 are converted into first and second modulated laser light by a known cutting device using laser light, and the disk-shaped recording master disc. The upper photosensitizer is separated from each other by about 1/2 track pitch and simultaneously focused. A disk according to the present invention having an electrode function and a track pattern as shown in FIG. 13 in which a needle guide groove is not formed through a known developing process and a known plate making process. One embodiment is manufactured.

In FIG. 13, the disk 41 is a spiral track T.
The video signal and audio signal output from the output terminal 37,
An information signal including an address signal and a control program signal is a frequency-modulated wave signal, and pits are intermittently formed and recorded according to the information content. Of one continuous spiral track T shown by the solid line in FIG. 13, the track corresponding to each rotation of the disk 41 is t ₁ ,
Shown as t ₂ , t ₃ , ... Each track has pits for information signals formed on a flat surface, and no needle guide groove is formed. One horizontal scanning period (1H) per track
A pit for the first reference signal f _{P1 and} a pit for the second reference signal f _P2 are formed on both sides in the longitudinal direction at positions corresponding to the horizontal blanking period, respectively.

Then, only one of the pits of the reference signals f _P1 and f _P2 is formed at the intermediate position between the center lines of the adjacent tracks, and moreover, the reference signals f _P1 and f are set for one track. _The side on which _P2 is recorded is replaced for each track. That is, in FIG. 13, the track of the reference signal f _P1 is shown by a broken line, and the track of the reference signal f _P2 is shown by a dashed line. v ₁ , v ₂ , v ₃ , ... Show the position of the vertical synchronizing signal in each field. In addition, each track t ₁ , t ₂ ,
The third reference signal f _P3 is recorded at the start position of t ₃ , ..., That is, the positions v ₁ , v ₅ , v ₉ , ... At which the reference signals f _P1 and f _P2 switch, for example, for about 3H period as described above. ing.

Further, one rotation period of the disc 41 is, for example, 4 times of the video signal.
Track t ₁ , which is equal to the field period and whose vertical blanking period is within the range shown in a, b, c and d in FIG.
It is recorded at t ₂ , t ₃ , ...

As described above, since the control program recorded on the disc according to the present invention is recorded in time series having a one-to-one correspondence with the video signal and the audio signal, the control program is connected to the outside of the disc reproducing apparatus described later. A device such as a personal computer having a judgment function does not need to store all of this control program, and is loaded each time the control program is newly reproduced. , Operations such as partial erasure and addition can be performed, and thus the memory capacity can be reduced. The control program is distributed and sequentially recorded on each track, and as described above, the audio signal of the second channel is recorded in the portion where the control program is not recorded.

Further, the control program is written in a predetermined intermediate language, and as described below, an external device such as a personal computer is provided with a disk language interpreter for converting the intermediate language into a predetermined language format determined by the external device. By doing so, it becomes possible to interact with the external device. In other words, the number of control programs is required according to the type of disc, but the same type can be obtained by preparing the disc language interpreter for all types of language formats of external devices that are expected to be used during playback. Since only one type of disk control program is required, the burden of software development can be reduced compared to the conventional method.

Further, since the control program is recorded on the same track as the video signal and the like by using the audio signal transmission line of the second channel, the audio signal and the video signal of the first channel are the same as those of the conventional disc in which the control program is not recorded. Recording can be performed with the recording capacity, and there is no restriction on the recording capacity.

Next, a disc reproducing apparatus for reproducing the disc according to the present invention will be described. FIG. 14 shows an example of the connection state between the disc reproducing apparatus and other external equipment, and FIG. 15 shows an example of the reproducing system of the control program between the disc reproducing apparatus and the external equipment. In both figures, the same components are designated by the same reference numerals. In FIG. 14, the video disc player 43 bidirectionally transmits local commands to and from the interface box 44, while the playback signal is a video / audio processor 45 for obtaining a special effect.
Is supplied to. Further, local commands are transmitted between the interface box 44 and the video / audio processor 45 and the character / sound generator 46. In this specification, a video disc player 43,
The disc playback device 47 is composed of the interface box 44, the video / audio processor 45, and the character / voice generator 46. The video / audio processor 45 and the character / sound generator 46
Does not have to be. The interface box 44 is provided with a standard interface such as RS232C capable of bidirectional communication.

In FIG. 14, an interface box 44 in the disc reproducing device 47 and an external device 4 having a judgment function
8 (for example, personal computer 49, game device 5
0 and the like), various commands based on a reproduction control program are bidirectionally transmitted, and a video signal and an audio signal generated by the external device 48 are supplied to the television receiver 51 via the video / audio processor 45. Can be done. Further, the video signal picked up by the television camera 52 and the picked-up audio signal are respectively transmitted via the video / audio processor 45 to the television receiver 5.
1 is connected so that it can be supplied.

Further, as shown in FIG. 15, for example, a sound signal produced by the speaker 53 in the personal computer 49 is switched by the switches 55 and 56 as necessary and supplied to the speakers 58 and 59 through the amplifier 57. Similarly, the video signal displayed on the cathode ray tube 54 is displayed on the television receiver 51.

The signal connection between the disc reproducing device 47 and the external device 48 is
In the present embodiment, the RS232C interface is used because it is the most general serial data transfer, can be connected to any computer, and has a unique configuration because of its name. This RS232C interface is a standard set by the Electronic Industries Alliance (EIA) of the United States in response to the recommendation of the International Telegraph and Telephone Consultative Committee (CCITT). In this embodiment, as shown in FIG. 16, among the 25 pins of the connector of the RS232C interface circuit 60 in the interface box 44, ...
,,, and 2, 3, 4, 5,
The following signals are output or input to pins 6, 7, 8, and 20. The reproduced data from the video disc player 43 and the internal state address information are output from the 2nd pin and transmitted to the external device 48. In addition, from the external device 48 to the video disc player 43 on the third pin
Incoming control commands for. 4th, 5th, 6th
The signals on the No. 7, No. 7, No. 8 and No. 20 pins are originally signals for determining the modem control or the modem state. In the present embodiment, the No. 4, No. 5 pins are used to connect the video disk player 43 to the external device. Control the transmission operation for 48.
Video disc player 43 when pin 4 is positive
Makes a transmission start request to the external device 48. On the other hand, when the external device 48 is capable of receiving, the pin 5 of the video disc player 43 is made positive. When this condition is satisfied, the transmission signal is output from the video disc player 43 to the external device 48 using the second pin.

The receiving operation of the video disc player 43 is controlled by using pins 6, 8, and 20. When the video disc player 43 is in a receivable state, the 20th pin is set to the positive polarity. On the other hand, when the external device 48 is ready for transmission, pins 6 and 8 are positive. When this condition is satisfied, a control command from the external device 48 to the video disc player 43 comes in on the third pin. Further, pin 7 is a signal ground.

Next, the procedure at the time of reproduction and the operation of each unit will be described. First, the external device 48 is, for example, a personal computer 49.
Then, a disk language interpreter stored in advance in an external storage device such as a cassette tape or a floppy disk is loaded into the personal computer 49. This disc language interpreter is a routine for interpreting the reproduction control program command of the disc 41 into a machine code command suitable for the personal computer 49. One type for the personal computer 49 regardless of the type of the disc 41. It's done. This means that by preparing only one type of external storage device in which a disc language interpreter suitable for the personal computer 49 is stored, all types (information contents) can be obtained.
It goes without saying that the control program from the disc 41 can be decoded by the personal computer 49, and that the control program recorded on the disc 41 can be written in only one predetermined intermediate language. As described above, it is not necessary to write each in a language corresponding to the personal computer 49 of each manufacturer different from each other. The disk language interpreter is written in machine language so that it can be processed as fast as possible due to the processing speed of the personal computer 49.

Next, the user inserts the disc 4 into the video disc player 43.
When 1 is mounted, the video disc player 43 automatically enters the reproduction state. As a result, the video disc player 43 detects that the electrostatic capacitance formed between the disc 41 and the electrode provided on the reproducing needle (not shown) that slides on the disc 41 rotating at 900 rpm is a recorded signal. It is detected that the pits change depending on the presence or absence of the pits, the signals are converted into electric signals, FM demodulation is performed, and further, known signal processing is performed to demodulate video signals, audio signals and the like. Further, the reproducing needle supplies the reproduced outputs of the reference signals f _P1 and f _{P2 to} the differential amplifier through the switch circuit after the envelope detection, and the tracking error signal obtained by this reproduces the output from the track T shown in FIG. Tracking control is performed so as to eliminate track deviation.

It should be noted that when the reproducing needle reproduces the reference signal f _P3 , or when the reproducing needle is forced to change the reproducing track during special reproduction or the like (however, except when reproducing f _P3 ), The switch circuit is switched from the state so far, the detection output of the reference signal f _P1 or f _P2 reproduced from the outer peripheral side of the reproduction track is always supplied to the first input terminal of the differential amplifier, and the differential amplifier To the second input terminal of the reference signal f reproduced from the inner circumference side of the reproduction track.
Detection output _P2 or f _P1 is always configured to be supplied. This is because, as shown in FIG. 13, the recording positions of the reference signals f _P1 and f _P2 with respect to one track are changed track by track with the reference signal f _P3 recording position as a boundary.

At the same time, the control program signal intermittently recorded in the second audio channel is interfaced with the reproduction vertical synchronization signal, the reproduction horizontal synchronization signal, and the reproduction address signal of the disc 41, as shown in FIG. It is supplied to the decoder 61 in the box 44. Decoder 6
When 1 is composed of a microcomputer, it operates according to the flow chart shown in FIG. That is, the presence / absence of the vertical synchronizing signal is detected (step 73), and when the vertical synchronizing signal comes in, the variables A, B, and
At the same time as clearing C respectively, the number of horizontal synchronizing signals is counted (step 74), and the 21st scanning line number (284th scanning line number) is detected (step 75). This is because, as described above, a total of 15 bytes of the control program signal is recorded during the total of 240H from the 21st scanning line number (284th H).

Next, when a horizontal synchronizing signal comes in, it is detected (step 76), variables C = B and B = A are set, and A is set to 21st.
The value of the H-th (284th H) th data (“0” or “1”) is set (step 77). Next, it is again detected whether or not the horizontal synchronizing signal comes in (step 78), and when the horizontal synchronizing signal comes in, the values of the variables A, B, and C are respectively set to the second value.
The reproduction data of the 2nd H (285th H) is changed to each value of A and B (step 79). Here, the data of the reproduction control program signal is a rectangular wave obtained by waveform-shaping a signal as shown in FIG. 9 (D), and the level of the logic "0" or "1" and the reproduction horizontal synchronizing signal are They are in phase synchronization,
The sampling outputs of three consecutive horizontal synchronizing signal phases do not have the same value, and when the sampling outputs of two consecutive horizontal scanning periods have the same value, a logic "0",
When they are different, the logic "1" is shown in FIG.
It is also clear from (D).

Therefore, the decoder 61 determines whether or not the values of the variables A, B, and C are all the same (step 80). If they are the same, it is determined that an error has occurred (step 81). It is determined whether or not the values of the two variables match (step 82). If they are the same, it is detected that the data is "0", and if they are not the same, the data is "1" (step 83). , 84). Thereafter, the same operation as described above is repeated until one block is completed (step 8).
5).

The decoder 61 for performing the above operation may be formed of a digital circuit as shown in FIG. In the figure,
The reproduction control program signal of the disk 41 is input to the input terminal 86, and the waveform is shaped by the comparator 87 and D
It is applied to the data input terminal of the flip-flop 88.
The D flip-flops 88, 89 and 90 are cascaded in three stages. A reproduction horizontal synchronizing signal is input to the input terminal 91 and counted by the counter 93. The counter 93 is reset by the reproduction vertical synchronizing signal from the input terminal 92, outputs a signal at the 21st scanning line number (284th H), sets the flip-flop 94, and sets the AND circuit 9
5 is set to the "open" state. The flip-flop 94 is reset by the vertical synchronizing signal. Therefore, the reproduction horizontal synchronizing signal is applied to each clock terminal of the D flip-flops 88 to 90 as a clock pulse during the period from the 21st scanning line number (284th H) to the input of the vertical synchronizing signal. As a result, when all the 3H sampling outputs have the same value, the exclusive OR circuit 96 and the NO
An error signal is output to the output terminal 99 through the R circuit 98, and when the sampling outputs of 2H have the same value, a signal indicating that the data is “0” is output to the output terminal 100 through the exclusive OR circuit 97 and 2H. When the sampling outputs of 1 have different values, a signal indicating that the data is “1” is output to the output terminal 100.

Referring back to FIG. 15 again, the data demodulated by the decoder 61 as described above is supplied to the error correction and formatting circuit 63 through the buffer memory 62, where the check bits b5 to b8 in FIG. After error detection and error correction have been performed by a known method using, the data of the array shown in FIG. 6B is rearranged in the original order as shown in FIG. Is temporarily stored in. On the other hand, the address signal A _T reproduced from the disk _41, A _N, A _C, the transmission buffer memory 64 with the generated status and the clock in the video disc player 43, a formatting circuit 65, respectively through it at a predetermined transmission rate It is temporarily stored in the buffer memory 66 as much as possible. The status is composed of, for example, 25 bits, and includes the content of the recording information signal of the disc 41 (for example, the television system of the video signal, the type of the audio signal, etc.), the disc playing board surface, the display mode, the position information of the playing needle, and playing Indicates the mode etc.

Various signals stored in the buffer memory 66 are RS23.
RS232C interface circuit 67 of personal computer 49 via 2C interface circuit 60
Connected to. In the personal computer 49, as described above, the disc language interpreter is loaded as shown by 68 in FIG.
The signal coming in 7 is translated into a language suitable for the personal computer 49, and becomes its input / output command and internal processing command. As a result, a desired sound is produced and an image is displayed on the speaker 53 and the cathode ray tube 54 of the personal computer 49. When the incoming command requests information from the keyboard 70, the joystick 71, or the light pen 72, when the user operates in response to the information, a signal supplied to the speaker 53 and the cathode ray tube 54 by the I / O control unit 69. Is controlled in response to the operation, a command for controlling the disc reproducing device is generated and supplied to the interface box 44 through the RS232C interface circuits 67 and 60.

Here, after the control program signal stored in the disc 41 is reproduced, a command based on the reproduction control program signal is supplied to the personal computer 49, and based on the command transmitted from the personal computer 49 to the video disc player 43. The time required for the video disc player 43 to actually operate is, for example, about 7 field periods. Therefore, it is natural that the control program signal is recorded at a position preceding the position on the disc 41 where the predetermined operation based on the program should be executed, but here, the predetermined program is reproduced. In this case, the command transmitted from the personal computer 49 to the video disc player 43 is postponed and stacked in the buffer memory 66, and it is determined whether the reproduction address information from the disc 41 matches the address of the command. It is possible to monitor and make the video disc player 43 perform a predetermined operation according to the meaning of the command when the two match. In this case, the predetermined signal processing is performed in the one field period in which the reproduction address information of the predetermined value is obtained, and the operation based on the command is performed from the next field on the video disc player 4.
3 can be done, so the time delay is only one field.

Based on the player control command transmitted from the personal computer 49 to the video disc player 43, the video disc player 43 moves the reproducing needle to a predetermined track position at high speed (search operation), performs still motion reproduction, Alternatively, the normal reproduction is performed for a certain period of time, and then the cue reproduction of the program of the predetermined chapter number is performed.

In this way, while the image and sound obtained by reproducing the already-recorded video signal and the already-recorded audio signal of the disc 41 by the video disc player 43 are displayed on the television receiver 51 or the like, at the same time, the existing image of the disc 41 is reproduced. The disc reproducing device 47 is capable of reproducing the recording control program.
Command transmission between the external device and the external device 48,
Interactive playback is possible.

By the way, it is assumed that the control program signal sequence reproduced from the disk 41 is reproduced in the order of the direct execution statement “LOAD” → the program control type execution statement A → the direct execution statement “RUN” as shown in FIG. Then, the program-controlled executable statement A is displayed on the personal computer 49.
After it is loaded into, its execution will begin.
In this state, if the reproducing needle reproduces in the forward direction on the track portion on the disc 41 where the control program signal sequence as shown in FIG. 20 is arranged and recorded, the control program signal sequence shown in FIG. , From top to bottom,
"CONTINUE"->"BREAK"->"APPEN"
D ”→ program-controlled executable statement B →“ CONTINU
The above commands (direct execution statements) cause the personal computer 49 to execute the contents shown in Table 1, so that the personal computer 49 is in the middle of executing the program control type execution statement A. so,
After the execution is interrupted by the command "BREAK", the program control type executable statement B is connected to the program control type executable statement A, and then the command "CONTINU" is executed.
By the reproduction of "E", the execution is resumed from the place where the program-controlled executable statement A was interrupted. After the execution of the program-controlled executable statement A, the program-controlled executable statement B is executed.
Will be executed.

On the other hand, if the personal computer 49 reproduces the control program signal string recording track portion shown in FIG. 20 in the reverse direction while the program control type executable statement A is being executed, the control program signal string is from the bottom to the top of FIG. It will be reproduced in order in the direction. However, as described above, the personal computer 49 receives another program-controlled executable statement A unless the execution of the program-controlled executable statement A is completed or the execution is interrupted by the "BREAK" command. Also, since the priority is set to ignore direct executable statements, "CONTIN
During the reproduction period of the direct executable statements of "UE" and "APPEND" and the program-controlled executable statement B, these are ignored and the program-controlled executable statement A is continuously executed, and the reproduced "BREAK" command is executed. However, the execution of the program-controlled executable statement A is resumed in the same state, since the "CONTINUE" command is reproduced next time. Unlike during forward playback, the program-controlled executable statement B is not executed during playback.

Similarly, when the control program signal string recording track portion as shown in FIG. 21 is reproduced in the forward direction, the control program signal string is reproduced in order from the top to the bottom of FIG.
Of the direct executable statements “OP1” and “OP2”,
It can be seen that only "OP1" is executed, but "OP2" is not executed. On the other hand, in the case of reverse reproduction, the control program signal sequence is reproduced in order from the bottom to the top in FIG. 21, so that only the direct execution statement “OP2” is executed and the direct execution statement “OP1” is You can see that it is not executed. As described above, even when the same control program signal string recording track portion is reproduced, different control program signals are executed depending on the reproduction direction (the control program signal is selectively executed). Be done.).

Further, as shown in FIG. 22, in a disc in which a video signal, an audio signal and a control program signal are recorded at a rate of 4 fields per rotation, a sequential 1 field period (strictly speaking, the predetermined field described with FIG. 240H period)
It is assumed that F1, F2, ..., F16 respectively record control program signals as shown in the second vertical column from the left side of FIG. 23, standard reproduction (forward 1 × speed reproduction), In the case of 2x speed playback, 3x speed playback, 5x speed playback (the above is forward playback), or reverse 1x speed playback,
The field periods indicated by circles in FIG. 23 are sequentially reproduced in the order shown by the arrows (for example, in the forward 5 × speed reproduction, the reproduction is performed in the order of F1 → F6 → F11 → F16). Note that "OP1" to "OP5" in FIG. 23 indicate direct executable statements, respectively.

Therefore, for example, at the time of reproduction at the triple speed in the forward direction, as can be seen from FIG. 23, the "BREAK" command recorded in the one-field period F4 is reproduced, so that the execution of the program-controlled executable statement up to that point is executed. Is interrupted, and the direct execution sentence "OP2" recorded in the next one-field period F5 is reproduced, so that the direct execution sentence "OP2" is immediately moved to the execution state. of the vertical blanking interval storage locations of four locations indicated by V0 to V3, immediately after the vertical synchronizing signal in the vertical blanking period shown in V1, and the address signal a _C, a _T
, And A _N are forcibly transferred to the inner peripheral side by one track pitch at a position (for example, the 11th H or the 274th H of the horizontal scanning line number) immediately before being reproduced to reproduce the recorded signal in the one-field period F10. Therefore, the "CONTINUE" command is reproduced, and the personal computer 49 restarts the execution of the program-controlled executable statement, which has been suspended until then. Next, the reproducing needle reproduces the next one field period F11, and then at the above predetermined position in the vertical blanking period recording position V3 in FIG. To play. Then, the direct executable sentences "OP5" and "CONTINU" reproduced from the field periods F11 and F16, respectively.
E "is ignored, and the above program control type execution statement is continuously executed. When the" BREAK "command reproduced from the field period F4 enters the personal computer 49, the program control type execution statement has already been completed. Therefore, in this case, only the direct executable statement “OP2” is executed.
At the time of the triple speed reproduction in the forward direction, at least the direct executable statement "OP2" is executed.

Further, during 1 × speed reproduction in the reverse direction, as can be seen from FIG. 23, the reproducing needle sequentially reproduces the field periods F15 and F16, and then the vertical blanking interval storage position V of FIG.
After being forcibly transferred by one track pitch in the outer peripheral direction at a predetermined position within 0 to reproduce the field period F13, the next one field period F14 is reproduced, and further at a predetermined position within the vertical blanking period recording position V2. In the outer peripheral direction, the field period F11 is reproduced by being forcibly transferred in the outer peripheral direction by one track pitch, and thereafter, every time the vertical blanking period positions shown by V0 and V2 are reproduced, one track pitch is reproduced in the outer peripheral direction. Is forcibly transferred to. Even in reverse reproduction, since the disc is rotated in the same direction as in forward reproduction, the reproduction order of the control program sequence is opposite to that in forward reproduction, but the control programs in one field period are all correct. It will be played in order.

As a result, during the reverse reproduction, the personal computer 49 reproduces "B" during the field period F15.
If the execution of the program-controlled executable statement is not completed by the "REAK" instruction, the execution is interrupted, and thereafter, "CONTINU" reproduced in the field period F16 is reproduced.
The execution of the executable statement is resumed in the same state by the E "instruction, and the" CONTINUE "instruction and the direct executable statement" OP5 "that are sequentially reproduced from the field periods of F13, F14, and F11 are ignored, and the field period F1
Execution is interrupted by the "BREAK" command reproduced from No. 2, the direct executable statement "OP4" reproduced from the next one-field period F9 is immediately executed, and the "CONTINUE" command reproduced from the next one-field period F10 is executed. The program-controlled executable statement suspended by restarts execution. Furthermore, F7 → F8 → F5 → F6 → F3 → F4 → F1
The direct execution statement "OP1" reproduced immediately after the field period F3 after the field period F6 in which the next "BREAK" command is reproduced among the control program signals sequentially reproduced in the order of the field period F2 → F2 is immediately executed. To be done.

Direct execution statement executed at the time of forward 3 × speed reproduction and backward 1 × speed reproduction, and further standard reproduction (forward 1
The direct execution statement executed during the double speed reproduction), the forward double speed reproduction, and the forward fifth speed reproduction is the 23rd direct execution statement.
The case of the figure is summarized as shown in the following table.

As can be seen from Table 2, the track portion in which the same control program signal sequence is recorded (field periods F1 to F1
Even when 6) is reproduced, the direct execution statement to be executed differs depending on the reproduction direction, and even in the case of reproduction in the same direction, standard reproduction and special reproduction (double speed reproduction) , 3 × speed reproduction, and 5 × speed reproduction) are different in the direct execution statement to be executed, and in the case of special reproductions, the direct execution statement to be executed is different due to the difference in the double speed ratio (reproduction speed). In this way, the same control program signal sequence is selectively executed depending on the difference in the reproduction direction and the reproduction speed.

In the direct execution statement shown in Table 1 above, "D
The "ELETE" instruction is transmitted, for example, after the execution of the program-controlled executable statement is completed, and the designated command string portion in the program-controlled executable statement is erased. In this case, another program-controlled instruction is executed by the subsequent "APPEND" instruction. After the execution statements are additionally combined, the external device 48 can be caused to perform an operation such as executing a new program control type execution statement by the "RUN" command.
The data sentence is transmitted at a position later in time than the "RUN" and "CONTINUE" commands.

Application Examples Note that the present invention is not limited to the above-described embodiments, and a disc in which a recorded signal is read by irradiating a disc with a light beam and detecting a change in the light intensity of the reflected light or the transmitted light thereof. Can also be applied, and can also be applied when there is only one audio channel. Further, the control program signal may be intermittently recorded instead of the audio signal of the second channel (in this case, the audio signal of the second channel is not recorded at all).

Effect As described above, according to the present invention, at least the control program written in the program control type execution statement and the direct execution statement is cycled twice (or other natural number times) the horizontal scanning cycle of the video signal. Modulation method that allows self-clocking based on a reference clock (for example, bi-phase
Since it is a rotary recording medium which is recorded by being modulated by space modulation) and being band-limited to a voice signal band, or recorded as a time-sequentially synthesized voice signal,
It has the following features.

Since the control program is recorded in time series having a one-to-one correspondence with the video signal and the audio signal, it is not necessary to store all of the control program in the external device when it is played back. It is possible to perform operations such as new, partial erasure, and addition on the control program that is loaded each time it is newly reproduced and has already been loaded, and thus the memory capacity of the external device can be reduced.

Since the control program signal is recorded, it is not necessary to separately prepare an external storage device such as a floppy disk in which the control program is stored. Therefore, a place for storing the external storage device can be made unnecessary and many discs can be stored. When selecting a disc to be reproduced from among the above, the troublesomeness of having to select an external storage device corresponding to it is released.

At least for the video signal, it is possible to secure the same recording capacity (up to 60 minutes of moving image recording) as that of the floppy disk, which is the same as the disk on which the control program signal is not recorded.

The control program signal is composed of at least a program control type execution statement and a direct execution statement, and the program control type execution statement among them is executed after being loaded into an external device by two direct execution statements (commands) of a load instruction and an execution instruction. Therefore, the program-controlled executable statement can be distributed and recorded at a position irrelevant to the temporal position at which it is actually executed. Therefore, a voice that is time-sequentially synthesized in the control program signal sequence is recorded. The signal can be transmitted more effectively.

Since the control program signal has direct execution statements that give priority to the execution of program control type execution statements and direct execution statements, it is possible to selectively execute the same control program signal sequence depending on the reproduction direction and the reproduction speed. Therefore, it is possible to apply unprecedented software.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of an outline of a method for producing a control program to be recorded, and FIGS. 2, 3, and 5 are diagrams showing examples of data structures in the process of producing a control program signal. FIG. 4 is a diagram collectively showing an example of each value of the information bit, the error correction code, and the parity of FIG. 3, and FIGS. 6 (A) and 6 (B) are diagrams for explaining the rearrangement of data.
FIG. 8 is a diagram showing an example of the structure of a control program signal of a minimum unit block and its transmission period. FIG. 8 is a block system diagram showing an example of a signal recording system for recording the rotary recording medium of the present invention. A) to (D) and FIG. 10 (A) to
8D is a time chart for explaining the operation of each part of the block system shown in FIG. 8, and FIG. 11 is a diagram showing that a bit indicating whether or not a control program signal is recorded is included in the track number address signal. FIG. 12 is a diagram showing an example of a frequency spectrum of a signal recorded on the rotating recording medium according to the present invention, and FIG. 13 is a diagram showing an example of a schematic track pattern of the rotating recording medium according to the present invention.
FIG. 15 is a diagram showing an example of a connection state between the disc reproducing device and another external device, FIG. 15 is a diagram showing an example of a reproducing system of a control program between the disc reproducing device and the external device, and FIG. 16 is an RS232C interface. FIG. 17 is a diagram for explaining the input / output signals of the main pins of the circuit, FIG. 17 is a flow chart showing the operation when the decoder in FIG. 15 is configured by a microcomputer, and FIG. 18 is the decoder in FIG. Circuit diagram showing an example when configured with digital circuits,
FIG. 19, FIG. 20 and FIG. 21 are diagrams showing examples of various execution statements and reproduction directions reproduced from the disc of the present invention, and FIG. 22 is an example of track positions where control program signals are recorded. FIG. 23 is a diagram showing an example of the control program recorded in the track position of FIG. 22, commands executed during standard reproduction or special reproduction, and the sequence thereof. DESCRIPTION OF SYMBOLS 1 ... Scenario, 10, 41 ... Disc-shaped rotating recording medium (disk), 15 ... Control program generator, 16 ... Color video signal source, 17, 18 ... Audio signal source, 19 ... Modulator,
20, 26 ... Low-pass filter, 22, 23, 34 ... Frequency modulator, 27 ... Sync signal separating circuit, 29 ... Color signal converting circuit, 32 ... Address signal input terminal, 36 ... Reference signal generating circuit, 43 ... Video disk Player, 44 ... Interface box, 47 ... Disk reproducing device, 48 ... External device having judgment function, 49 ... Personal computer, 60, 67 ... RS232C interface circuit,
61 ... Decoder, 86 ... Reproduction control program signal input terminal, 91 ... Reproduction horizontal synchronization signal input terminal, 92 ... Reproduction vertical synchronization signal input terminal.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shunichi Shichijo 3-12 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa Japan Victor Company, Limited

Claims (2)

[Claims] 1. An input / output command of a device having a judgment function such as a computer connected to the outside of a device for reproducing a rotating recording medium, an internal processing command thereof, and a control command of the reproducing device, and at least program control. Type execution statement and direct execution statement, and the control program having the direct execution statement that sets the execution priority of the program control type execution statement and the direct execution statement in the external device A modulated wave signal that is modulated by a modulation method capable of self-clocking on the basis of a reference clock having a period that is a natural multiple of the horizontal scanning period and that is band-limited to the audio signal band. Is synchronized with the horizontal synchronizing signal together with the video signal by substituting for the audio signal in a time period of about 1 field or synthesized in time series with the audio signal. Rotating recording medium, characterized by comprising recorded on the same track of a spiral or concentric shape. 2. The modulated wave signal is used independently of the audio signal of one channel among the audio signals of a plurality of channels recorded in the rotary recording medium, or when the audio signal of the one channel is used. The rotary recording medium according to claim 1, wherein the rotary recording medium is recorded by being synthesized in series.