JPS59207466A - Storage case for recording disk of information signal - Google Patents

Abstract

PURPOSE:To detect the contents of record information automatically and accurately by fomring a non-cut part which turns on the 1st one of plural switches provided at the prescribed positions opposite to the front edge part of a cover within a reproducer. CONSTITUTION:Analog and digital recording tracks are mixed to perform recording in a disk 3. A storage case 2 for recording disk of information signal which turns on one of plural switches is provided at a prescribed position opposite to the front edge part of a cover 4. In this case, a non-cut part is formed to turn on the 1st one of plural switches provided at the prescribed positions opposite to the front edge part of the cover 4 within a reproducer. In such a way, the contents of record information can be detected automatically and accurately.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an information signal recording disk storage case, and in particular to a recording track for digital signals mainly containing high-pitched information and a recording track for ablogging signals mainly containing video information. This case relates to a case for storing information signal recording discs, etc., on which information signals are recorded and formed in a mixed manner.

Prior Art Conventionally, information signal recording disks have been used in which alilog information signals such as composite video signals and audio signals are frequency modulated (Ftvl) and recorded on concentric or spiral tracks, for example, as changes in geometric shapes. (hereinafter referred to as "disk") is known. This disc is called a video disc because the recorded information is mainly composed of composite video signals, and the recorded information is recorded using analog information signals, which modulate the carrier wave. Composite video signals and the like are recorded in the form of modulated wave signals. Note that on a video disc, for example, an address signal for random access is recorded during a specific period within the vertical blanking period of a composite video signal, and the address signal is a coded digital signal. Since the main body of information is an analog-modulated composite video signal, etc., a track such as the recording track of this video disc will hereinafter be referred to as an ``analog recording track'' in (2) of this specification for convenience.

After the audio signal or reputation signal and the movie news are digitally modulated, they are synthesized in time series and recorded concentrically or spirally, for example, as a change in geometric shape. The discs that are available are also widely known. The recorded information on this disc is mainly an audio signal, and video 1 (i) is mainly a still image, which only serves as auxiliary information to help the listener's imagination of the audio signal. Therefore, it is called a digital audio disc. In the recording track of this digital audio disk, an information signal such as an M-angle signal is digitally modulated, converted into a digital signal form, and then subjected to frequency modulation, etc., and recorded. For convenience, tracks like the recording tracks of a disc are referred to as "digital recording 1~rack" below.
It shall be as follows.

).

By the way, as proposed by the present applicant, in the video disc mentioned above, the signal is reproduced by detecting the change in capacitance formed between the electrode of the scanning cap and the disc. In addition, reference signals for tracking control with extremely different frequencies are recorded on both sides of the information signal recording track (analog recording tracks 1 to 1), and tracking is performed by comparing the reference signal levels to assist playback. A video disc is known in which the sub-guide (14) is not required due to control. On the other hand, some of the digital audio discs mentioned above include J: Uni, which was proposed by the applicant.
Similar to the above-mentioned capacitance change reading type video disk, reference signals for racking control are recorded on both sides of the information signal recording track (digital recording track), and the capacitance change reading type digital disc has no needle guide groove. It is known that there are audio discs. This digital audio disc is rotated at the same number of rotations as the above-mentioned capacitance change reading type video disc, the frequency of the reference signal for tracking control and the method of reproduction are the same, and furthermore, the frequency of the reference signal for tracking control and the method of reproduction are the same. They are also similar in that they have a configuration in which the green signal can be read by detecting a change. Therefore, even when this digital audio disc is played using the videotape disc playback device d,
As in the case of video disk playback, the scanning needle is normally activated for tracking, and the recorded green signal can be picked up and played back from the scanning needle, and by supplying the playback signal to the adapter, the original B% 177 It is possible to demodulate the signals, etc.

Therefore, the above-mentioned capacitance change reading type video disc and capacitance change reading type digital audio disc proposed by the present applicant can be played back by sharing the same capacitance change reading type video disc playback device. The digital audio disk and video disk described above have the advantage of being able to be replayed using so-called Ti conversion.

The problem to be solved by the present invention is that the digital audio disc and video disc mentioned above are separate and independent discs, and the above compatibility is strictly 7Gi compatibility. On the other hand, with digital audio discs (compared to video discs), the green signal described above is a digital signal, and due to the characteristics of digital signal transmission, the audio signal has a wide dynamic range and extremely high fidelity. Furthermore, the 11 still images are extremely low-speed, and of course the audio signal is extremely high along with the still image playback image)
It has the advantage that it can be played back in real time. On the other hand, when playing still images, video discs generally mute the audio signal in order to repeatedly play the same track, and unlike digital audio discs, still images and sound cannot be played back at the same time. However, in analog signal transmission, it is possible to transmit information signals in a band of several tens of kHz in real time, and to increase the accuracy of information, information signals in a band of several tens of kHz can be Compared to digital audio discs that transmit audio signals, this has the advantage that moving images can be played back together with audio signals. Therefore, in order to optimally reproduce recorded information, it is necessary to set the digital number and number according to the information content.
It is desirable to select either one of the lg signals and perform -C recording.

Therefore, in the patent application filed on the same day as the present application (invention titles: "Information Signal Recording Disc" and "Information Signal Recording Disc Reproducing Apparatus"), the present applicant has selected analog recording tracks as appropriate according to the recorded information content. The authors have proposed a disc in which a mixture of 1 and 2 digital recording tracks is recorded, and a reproducing apparatus for the same. In this case, in order to make the disc proposed by the applicant compatible with conventional video discs and digital audio discs, it is necessary to The circuit section of the ``-2'' analog recording track? It goes without saying that the Ij Ushika code and the reproduction signal of the digital record 01-rack are R-formed so that they can be demodulated and reproduced, respectively. A means for externally inputting information for switching each circuit section is required for reproduction. As a means for inputting this information from the outside 81S, it is conceivable that the user manually inputs the information by looking at the label of the disc storage case or the like. However, it is preferable to have a configuration in which this information can be input automatically into the playback device manually from the viewpoint of convenience for the user's operation and the ability to reliably input accurate information. Of course.

Therefore, the present invention satisfies the above requirements by giving the M (lid plate) of the disc storage case proposed by the applicant a predetermined structure, and allows the analog recording track to be used in the 4-cup C playback device. An object of the present invention is to provide an information signal recording disc storage case that can suitably reproduce the recorded green signal of a digital recording track and the recorded green signal of a digital recording track.

Means for Solving the Problems The present invention provides a system in which a modulated wave signal obtained by analog modulation with an information signal including at least a composite video signal is recorded at a rate of N fields per rotation (N is a natural number of 2 or more). One block is created by adding at least one redundant pitch to the analog recording track currently being used and the digital data of multiple channels obtained by digital modulation with an information signal, and each block is chronologically recorded. Among the digital recording tracks in which the digital signal synthesized with
The recording disc (i'i) is sealed inside the case body, and when it is inserted into the recording device m and pulled out with the instrument in front, it is inserted into the recording device d (this A large amount of the information signal recording disk and the device remain, and the front end portion of the device with the remaining information turns on one of the plurality of switches provided in the amphibial device. Informatization
A storage case for storing a recording disk, the plurality of switches passing through the rotational axis of the information signal recording disk and installed at asymmetric positions about an imaginary line parallel to the insertion direction. When at least one or two analog recording tracks are recorded on the information signal recording disk at the front end of the facing lid, the A notch is formed, and when only the digital recording track marked "-" is recorded and formed, the first
A notch is formed for setting the switch to A, and the information signal recording disk is connected mainly to the playback device to an external device having a judgment function.1! ■ The information signal recording disk whose output is J forms a cutout part or a non-cutout part that turns on the second switch on the back of the plurality of switches;
Furthermore, at least a glue entry section for determining the running M line number system of the recorded edge composite image No. 45 of the +Ni1- disk surface of the information signal recording disk and the analog recorder/rack.
, or a non-notched portion is selectively provided at the front end portion of the device facing the third and fourth switches behind the plurality of switches, and the playback device is provided with a non-notched portion selectively provided with a non-notched portion at the front end portion of the device facing the third and fourth switches, The switch is constructed so that at least one of the plurality of switches except the second switch is turned on, and one embodiment thereof will be described below with reference to the drawings.

Embodiment FIG. 1 shows a partially cut away exploded perspective view of an embodiment of the information signal recording disc storage case according to the present invention. In the figure, a disc storage case 1 is detachably connected to a rectangular case main body 2 and the front side of the case main body 2 in the direction of arrow A1, and includes various parts ( It is roughly composed of lid brakes 1 to 4, and its structure was previously disclosed by the applicant in Japanese Patent Application No. 11278/1983.
Although it is almost the same as the disk storage case proposed, the present invention has two features as described below. The characteristics are shown on the right side of the notch section of y4.This disk storage case 1 is
! The disk 3 has a change reading detection type electrode function, and the recording track of the disk 3 has a fine track pitch.
Avoid scratches, dust, fingerprints, etc. that may occur when handling the product.
), the disc 3 is stored and protected from direct contact with hands.

The case body 2 that houses the discs 3 of such a disc storage case 1 is made up of a pair of half-sleeves 5 that are assembled one above the other! The insertion direction side is the opening 6, and the remaining three sides are closed. Each 4 consists of a main body 7, engagement arms 8 on the left and right sides, and a wide collar 9 on the front side of the main body 7, and the main body 7 (the width of which is equal to the thickness of the opening 6) 1Φ is inserted between the upper plate 10 and lower plate 11 of the case body 2, and the protrusions 12 of the engaging arms 8 are engaged in the recesses 13 on both ends of the case body as shown by the two-dot chain lines, and the wide flange 9 is the top plate 10
, the opening of the lower plate 11 [abuts the l side end, arrow X+].

It covers the opening 6 and is coupled to the first body 2 with movement in the two directions restricted. Due to this connection, the disk 3 is locked to the arcuate end surface "1/1" of the main body 81s7, and its movement in the direction of arrow A1 is restricted, and the case main body 2
arrow Y+.

Movement in the Y2 direction is restricted, and the protrusion 1 of the lower plate 11
5 and is housed in the case body 2 with movement in the direction of arrow X2 being restricted.

Further, at the front end of the lid 4, there are a pair of overpassing parts 16 near the medium heating part, and a pair of lid latching notches 17a and 17b at symmetrical positions apart from the center part. , an imaginary line parallel to the insertion direction of the disc 3 passing through the rotation axis of the disc 3 between the lid latching notch 17a and the left end 18a and between the lid latching notch 17b and the right end 18b A disc identification notch 19 for displaying the disc surface, whether it is a video disc, an audio disc, etc., at a line symmetrical position with respect to
, 20 and 21 are installed.

Next, the disk 3 stored in the +7+5 configuration disk storage case 1 will be explained. Disk 3 is a disk in which people signals are recorded on both the front side (first side) and back side (second side), and a disk in which people signals are recorded only on the moon surface (this is referred to as the first side). Disc 3 includes the aforementioned analog disc, which the applicant proposed on the same date as this application, in addition to the video disc and digital audio disc that the applicant had previously proposed. A disk on which recording tracks and two digital recording racks are mixed (hereinafter referred to as "1" for convenience)
(also referred to as ``Ratsukku Mixed Recording Disk''). To explain the recording system of this 1-to-easy mixed recording disk, FIG. 2 shows a block system diagram of an example of the recording system of the information signal recording disk submitted by the present applicant on the same date as this application. In the figure, 2-channel VTRs 23 and 24 are
While the synchronizing signal is supplied from the PCM recording/reproducing machine 25, 26, the sound of two channels pre-recorded on the magnetic tape is transmitted, or one channel is an audio signal and the other channel is an audio signal. The audio signal or the still image signal, the still image signal of the d Tsuru channel or the 2P channel is reproduced, respectively.I) C
It is supplied to the M recording/reproducing fi 25, 26 and recorded there. Note that the above still image signal has 62 scanning lines as an example.
Digitally modulates a signal related to a still image only in the video period of a composite color video signal of the 5-line system, and the 1LI-encoded data is transmitted to the video period of a composite synchronization signal based on the Nl5C system, for example. The signal format is sequentially inserted.

The PCM recording and reproducing machines 25 and 26 convert the input signal into PCM
(pulse code modulation), and also generates an error check code and an error correction code.
It is recorded on a magnetic tape with horizontal and vertical synchronizing signals according to the TSCTSC system, and then reproduced. -For example, these P
The CM recording/reproducing devices 25 and 26 operate during one horizontal scanning period (IH
), 6 information words (3 words each for left and right channels) are recorded, and a data pause period of 351-l is set in one frame, so the sampling frequency [S = 3 × f
l-I X (525-35>/525, where [(,
The M recording/reproducing devices 25 and 26 are connected to the oscillator 27 by, for example, N
Horizontal scanning frequency of TSC method 15.734k −, J
= I Since it is operated in synchronization with z, f of the -V formula
1 in 11! Substituting i, 734kH7, the sampling frequency [S becomes 4'4.056k l - I Z 1° This J: Thus, the sampling frequency 44, which was extracted from 25.26, At 056 kl-l Z, digital signals of 1:14 channel with quantization pitch 1 to several 16 bits l are respectively supplied to the digital signal processing circuit 28. This digital signal processing circuit 28 is connected to the controller 1 to
Under the control of the output of the roller 29, a signal as shown in FIG. They are synthesized in time series at the transmission frequency, and furthermore, this synthesized single digital signal is used to generate, for example, 7 M l-l Z PI! A frequency-modulated wave signal obtained by frequency modulating (FM) a carrier wave of 300 nm is output to a terminal 30a of the switch circuit 30. FIG. 9 shows an example of the frequency spectrum of the frequency modulated wave signal (first FM signal) supplied from the digital signal processing circuit 28 to the terminal 30a of the switch circuit 30, in which the carrier wave has data of 11" and is 7.6M1. ~lZ, data is “0” 5.8MI+
Accepted 7.

In addition, in the figure, M'fp+, fpx, and fP are indicated by broken lines.
are reference signals f p, + , f + ·2 and ['
] 3 shows each frequency spectrum.

Here, in the signal of one block shown in FIG.
does not indicate the start of a block, but indicates the arrangement position of a fixed pattern of synchronization signals of 8 bits 1 to 1. Ch 1゜Ch -2,
, C'h-3 and Cm-4 each correspond to the location of one word of a 16-bit digital signal.

This digital signal includes a digital audio signal obtained by pulse code modulation (PCM) of an audio signal (A-dio signal), or a digital video signal obtained by PCM of a video signal. For example, ■Cb −1 ~ CI+−
■Ch
-1 to Ch-3 are arranged with 11 hoods of digital audio signals of each channel of 3 days and 17 channels, and C11-4 is arranged with pixel data of digital video A signal, for example, quantization number 8 pi I~. Place two? ? In this case, ■ the first 2 channel data of the digital audio signal of 7 channels are placed in Cll-1 and C11-2, and the second 21-channel data is placed in Ch-3 and Ch~11.゛When placing each funnel data of the digital audio signal of 17 channels, ■
C1) Each channel of the digital A-gamma ion signal of the 2-channel Al channel is arranged in CI+-1 and Cb'-2, and the digital video of the same or optical type is arranged in CI+-3 and Cb-4. There is a case where 8-bit pixel data of iM number is arranged.

Further, TIP and Q shown in FIG. 3 are respectively 16-bit error correction codes, for example, P = W 1! , e; W 2 Q)-') W 3 knee'l]゛W 4 (1) Q = T
4 ・W 1 σ>1−3 ・W
2 (-1',,; D2 ・ W 3 σ)T
-W4 1, which is a signal generated by the equation (2), where (1).

(2) In the formula, W+', Wz, W3, and W4 are C11-1
~・CI) = 4 16 bits 1- each digital word (
usually people digital signals in different blocks),
The king is an auxiliary matrix of a predetermined polynomial, and ■• accepts the addendum 7i modulo 2 of each corresponding pi 1 to fti.

Furthermore, in Fig. 3, cr'< c is the error detection fH number for 23 pits 1, and CI+-1 to CI+-1 arranged in the same block II.
CI+ -4, P, Q words (1 block × + ×
5 (-X ' - + - When dividing by the above generator polynomial, the resulting remainder is used to detect that there is no error.Additionally, in Figure 3, Adr is used for random access, etc. It accepts multiplex positions of various control signals.This control signal distributes each pin data and transmits 1 bit in 1 block.For example, 19G
All bits of the control signal 8 are transmitted by the block (the control signal is made up of 414 bits from 196 bits).

Furthermore, U is a knee 11-zip bit and 2 pits for a reserve to be stored. For example, the digital signal has a sampling frequency of 44.056k for each block.
It is synthesized at the same frequency as l-IZ and transmitted in C time series.

The above 196-bit control 1 signal has a configuration in which four types of address codes each having 49 bits 1 to 1 are synthesized in time series, and these four types of address codes are all in the signal format shown in Figure 4. It has been returned to 1. In FIG. 4, the first 24 bits indicated by 5YNC out of all 49 bits of address code are synchronization signals, and their values differ depending on the four types of address codes. The next 4 bits of the synchronization signal indicate the source mode indicating which of the above-mentioned combinations (1) to (2) the recording signal is, and also indicate whether or not the recording signal is a combination of 1 to 3. The address data is arranged in the next 2o bits, and the last bit [・ is Baliraichira 1~
It is.

If the address data is ``-address,'' then the disk on which that code is recorded. Show what is the difference? It is time data, and in the case of a digital address code, it is data that indicates which music program is recorded in the track position where that code is recorded from the recording start position of the disc. be.

After), the disk 34 is recorded at a rate of 4 fields per minute (when color video signals are recorded at a rate of 4 fields per rotation, the disk 34 has a rate of 899.1 < -(59,94
/4)
05Gx 103X (/1/59.94))
blocks will be recorded and played back. Therefore, the above 196-bit control signal is generated once during one disk rotation period.
Recorded and played back 5 times.

(13. When transmitting a digital video signal related to a still image, for example, the pixel data of the luminance signal is sampled using a sampling frequency of 9Mf-Iz and a quantization number of 8 pi/1 or more per pixel). frequency 88', 112kLlz
The pixel data of two types of color difference signals (R-Y) and (B-Y) [each with a sampling frequency of 2.25 MHz and a quantization number of 8 bits per pixel is stored using memory. 88.112kl''/' and one frame is transmitted by a signal format 1- as shown in FIG.

As shown in a3 in Figure 5, one word is 16 bits, and each pixel data for the number of child bits (8 bits) is placed in the upper 8 bits and lower 8 bits of one word, so one word is Two pieces of pixel data will be transmitted. In addition, Yl indicates a total of 572 luminance pixel data groups in the first vertical column at the far left of the screen, and each pixel A. bit,
'JS Lower 8 bits of 1 word, upper 8 bits of 2nd word
Bit, lower 8 bits of second word, upper 8 bits of third word 1~.

. . , the lower 8 bits of the 286th word. Y2 indicates a total of 512 luminance pixel data in the second vertical column from the left edge of the screen, Y3 indicates a group of 572 luminance pixel data in the third vertical column from the left edge of the screen, Similarly, Yi (i is l-456) indicates a group of 572 luminance pixel data in the first vertical column from 9ai on the screen, and each pixel data is the pixel data group Y1.
The pixel data for one vertical column is transmitted in 286 words each.

In addition, (RY)j is the first 572 pixel data group of the first digital color difference signal arranged vertically from the left edge of the screen, and (B-Y)j is the first pixel data group from the left edge of the screen. A total of 572 second digital color difference signals arranged vertically in
"The 572 pixel data in the same column are the upper 8 bits of the first word, the lower 8 bits of the first word,"
They are arranged in the following order: upper 8 bits of the second word, lower 8 bits of the second word, upper 8 bits of the third word, ..., lower 8 bits of the 28th G word, and 286 words correspond to one column of pixels. data is transmitted (J is l
-, 114).

In this way, transmitting pixel data in the vertical direction of the screen is
Scan wa j! This is to facilitate conversion.

In addition, the above: 1.
As shown in the figure, the digital luminance signal consists of a total of four pixel data groups (Y4 j-3, Y4, i-
z, Y4j +, Y; +j) and 2 (multiple digital luminance signals (R-Y) j and (r3-Y) The six pixel data groups constituting the same unit are transmitted in six columns of memory elements 11 that constitute the memory circuit of the still image reader in the reproduction device.
Y separately and at the same address, for example, as previously proposed by the present applicant in Japanese Patent Application No. 57-1852 = No. 1.3.

The header signals include the pixel data groups Yi, (R-Y)j and ([3-Y
) j is placed at the initial position of each of the 684 pixel data groups in total, and is transmitted as a signal for causing the reproducing device to identify the respective todo information of the immediately following pixel data group. The header signals H+ to 11684 (consisting of 3 words, they are a common signal) are designated as A-mat.

Returning to FIG. 2 again, the VTR 31 plays back a magnetic data record that is particularly related to moving pictures, for example, on which NTS C color video signals are recorded together with audio signals, and uses the playback signal as an alog. The signal is supplied to the signal processing circuit 32. The analog signal processing circuit 32 generates a frequency modulated wave signal having the same signal form as the video disc proposed by the present applicant, and also multiplexes various address signals within the vertical blanking period. and output it. The specific structure thereof is well known as disclosed by the present applicant in Japanese Patent Application No. 52-25262, etc., so a detailed explanation thereof will be omitted.
The analog signal processing circuit 32 generates a band-sharing multiplexed signal of the band-limited luminance 1 signal and the low-band conversion carrier color signal;
Furthermore, chapter address signal AC, time address signal Δ
T and track number bar address signal 5 ΔN are separately generated and multiplexed within each specific 111 period within the vertical blanking period of the multiplexed signal, and further frequency division multiplexed with the frequency modulated audio signal. te1511. ,: Frequency modulates (FM) a predetermined carrier wave with a signal and outputs the signal. Here, the address signal AC indicates the signal recording position on the disk in the order of the recording program - rear address signal, time address transmission] is the total time address signal, and the track number address signal AN is the disk rotation destination. The formed 1~rack is referred to as the reference signal ``1] 3 recording position is the starting point -C
This is an address signal that indicates the number of 1~Rack lines to be made into one, and these address signals are all 29 pins 1~Rack.
(14 years have been made.

The frequency spectrum of the output signal of the analog signal processing circuit 32 is as shown in FIG. In the figure, ■ is a frequency-modulated luminance signal of 2.3M! -1z carrier wave shift frequency band, fa is G corresponding to the sink depth, IMH7 frequency, [b is 6 corresponding to the pedestal]
, the frequency of GMH7, and fc indicate the frequency of J7,9 MHz corresponding to the white peak. Further, IIL and IIU indicate the lower sideband and upper sideband of the frequency-modulated luminance signal, and II[+-, l1lu is the frequency-modulated audio signal fA+
, fh24 shows the lower sideband and upper sideband of the frequency-modulated signal.toIV is the 2-channel frequency-modulated sound? fj
Carrier wave of fA2 to signal f8+ 3.43 MHz,
3.73 Indicates Ml-1z-0 Furthermore, in Figure 6, V is the frequency band of the low-band converted carrier color signal obtained by low-band converting the carrier signal being reproduced and transmitted by VTR31. Demonstration. Also, the first sidebands generated by frequency modulating this low-pass conversion carrier color signal are VIL, V
The second sideband is indicated by Iu, and the second sideband is indicated by ■L and ■U, respectively.

In FIG. 6, the frequency spectrum indicated by a solid line indicates the frequency spectrum of the signal taken out from the analog signal processing circuit 32. In FIG.

Note that the reference signals fp+, fp2, and f1]3, which will be described later, are located in the empty )δ1 wave number band below the band VllL. The purpose of separating the occupied bands of the reference signal rp+ to [ρ3 and the information signal is that it is necessary to reproduce them using the same reproduction button.

The switch circuit 30 inputs a frequency spectrum 1 to a frequency spectrum 1 as shown in FIG. 3 which is input to the terminal 30a and is obtained by frequency modulating the carrier wave with a digital signal of signal format 1- as shown by the solid line in FIG. 1st FM (No. 8 and Chi (: child 301)
Among the input second I:M signals having a frequency spectrum as shown by the solid line in FIG. 6, only one of the FM signals is selected under the control of the output signal of the controller 29. )j and output to the recording device 33. The recording head 33 is a known cutting device using Rayleigh light, and the output signal of the switch circuit 30 is supplied as a first signal, and the output signal of the disc-shaped recording master is inputted from the input terminal 35. 1
During the rotation period, a burst-like first reference signal fp+ and a burst-like second reference signal fP2 are supplied to the alternating current H in a time-series manner every 4 field periods, and [ρ
l,fP,! A signal obtained by inserting the reference signal fp3 into the switching position of is supplied as a second input signal, and these two
The first thing to do is to make a bow. converting it into a second modulated laser beam;
The exposure of the disc-shaped recording master disc is focused at a distance of about 1/2 + rack pitch from each other. This recording master disk is subjected to a known developing process, and from this, a disk 34 is manufactured which has an electrode function using a known disk making process and has a track pattern in which no button guides are formed.

This disk 34 has a digital recording track in which the first F to 1 signals from the digital signal processing circuit 28 are recorded, and a second F I output from the analog signal processing circuit 32.
It is characterized in that analog recording tracks on which V+ signals are recorded are mixed on the same surface depending on the recorded information content.

In other words, audio information such as music signals to be reproduced in ultra-high fidelity, and image information to reproduce still images such as encyclopedias, are recorded on digital recording tracks, while image information of moving images is recorded on analog recorded on the recording track.

Further, the address signals Ac, Ar, and AN are recorded in time series in the vertical blanking period recording portions at four locations per revolution of the analog recording track of the disk 34.

Furthermore, the digital recording track of the disk 34 is also formed on a spiral track, and as shown in FIG. It is recorded as a signal, and there is no vertical blanking period recording portion. However, on the digital recording track [the above reference signal fp3 is recorded in alignment with the reference signal fp3 of the analog recording 1-rack in the radial direction of the disk 34, and on both sides thereof, the reference signal fil is recorded. , fez are similarly recorded in 11-1 periods. ? In other words, regarding the reference signals fP I to fP3, the analog recording track and the digital recording track 1 to
This means that data is always recorded on the disk 34 at a constant period, regardless of the rack.

The 1~rack pattern itself is the same as the video disc and digital audio disc previously proposed by the applicant, and the signal format of the digital signal of the digital recording track (Figs. 3 and 4) and the 5
The figure shows the J digital video signal (particularly related to still images as mentioned above, but can also transmit partial moving images). Furthermore, the signal frequency specs of the log recording tracks shown in FIG.

In this case, by just making some changes to the existing playback device for the disc 34, it can be played back compatible with the existing digital audio discs and video discs proposed by applicant 1jy without any problems. .

The disk 3 shown in FIG. 1 is either the disk 34, the video disk on which only analog recording tracks are recorded, or the digital audio disk on which only digital recording tracks are recorded.

Next, a method for setting the cutout and non-cutout portions of the lid of the disc storage case according to the present invention will be explained with reference to FIG. In the figure, the same 574 components as in FIG. 1 are given the same reference numerals. In Fig. 7, at d3, the axis of rotation of the disc (not shown) in the disc storage case or the playback device passes through the axis of rotation, and in the insertion direction X of the disc storage case.
+ Imaginary line 4 parallel to (same direction as x1 in Figure 1)
Five microphones 11 switches / 11 . However, the microphone switch 45 is a spare and may be omitted.

On the other hand, the front end 1j1 of the lid 4 between the indigo hanging notch 17a and the left end 18a (A+, B4 in FIG. 7).

A2. As shown in B3 and A5, it is assumed that five notches are to be formed at equal intervals, and a 8
, A4. As shown by B2, A3, and B'b, five notch formation areas are assumed to be formed at equal intervals. Among the notch formation planned portions 'A+~As, B+-B5, those having the same subscript are arranged at line-symmetrical positions centering on the above-mentioned imaginary line 40.
5 When playing back the first page of 'Isk' on a playback device,
Micro switch/11.42.43.41! 'l and 45, and is located at a position roughly opposite to +31.
B2°B3', 134 and B5 are the microphone 11 switch 41°/12.4.3. = 14 and 45, respectively. Therefore, the notch formation planned portion △1-A5 is used for identifying the first side of the disc and recording information content on the first side.
The cutout portions 81 to B5 are used to identify the second side of the disc and the content of recorded information on the second side.

Notch formation planned portion A+ "□A5.8+~B5 is one of the back microswitches 41~45"- microphone [''
Since it is necessary to turn on the switch, A1
- One or more of Δ5 and one or more of 81 to B5 are large) Z non-cut portions. In addition, micro switch 4
5 is a part that is not used for any identification as a reserve, and the parts A5 and B5 where the notches are to be formed are always kept as non-notched parts.

The information identified by the microswitches 41 to 1.4 includes whether or not there is a cutout operation in the required circuit section in the playback device, and the identification display on the playback surface of the playback disc. first information on the playback surface of the disc, second information indicating whether or not the disc is a disc on which at least the analog recording rack is recorded, and a composite image recorded on the analog recording track. Third information indicating whether the signal scanning line number system is 525 or 625, and the disc to be played by connecting an external device with a judgment function (for example, a Parts Nord monitor) to the playback device. Indicate whether or not there is? Possible examples include fourth information and fifth information indicating whether the recording surface is double-sided or only one-sided.

Here, since the analog recording track described above does not exist on the digital audio sub-disc, it is not necessary to identify the third information in the form ":", and it is usually not necessary to identify the fourth information described above. How to use: In the case of video discs and the above-mentioned track mixed recording discs, a notch is provided to identify the second information, but the remaining first information. Third.
There are cases where it is necessary to identify all the fourth and fifth information by forming notches, and in this case, all of the microswitches 41 to 4/4 are turned off, so the disc playback device It is not possible to distinguish between the presence and absence of

Therefore, in the case of a track-mixed recording disc that has an analog recording track on a part of the recording surface and a video disc that covers the entire recording surface, it is necessary to have a cutout and identify it as a non-cutout part. Therefore, in the embodiment, the portions A4 and B4 where the notch is to be formed are non-notched portions.

Further, in order to identify the first information, for example, a notch is provided in the notch formation planned area A1, and a notch is provided in the notch formation planned area B.
+ connects to the non-notched part. In addition, in order to identify the third information, when the composite video signal of the analog recording track is of a 525-scanning-line system (for example, NTSC system), the notch formation scheduled portion Δ3°B3 is replaced with a non-notch portion, and 625 This method (
For example, for PAL format), please refer to A3 above. A notch is formed in B3. Furthermore, in order to identify the fourth information, if the disc to be played is a disc that needs to be played by connecting to an external device that mainly has a judgment function (this is referred to as "interactive" in this specification), '') is a regular disc that has a notch formed in the planned notch area A2.82 and can be played only with a playback device without the need for the external device described above. (this is referred to as 1 normal in this specification), the notch formation planned portion △2. B2 is referred to as a non-cut portion.

Here, discs identified as ``1 normal'' have recorded audio signals in four modes (i.e., 4 channel audio signals, 2
The channel audio signal is either a two-channel audio signal or a bilingual 8-voice signal (in the case of American video discs), and conventional digital audio discs and video discs are of this type. Included in 1 to 7 ivy! ? Most of the existing recording disks are also identified as this type of disk. On the other hand, a disc to be identified as [interactive] is t)'J
Note 1 - A thick mixed recording disc is a disc in which most of the recorded audio signals are audio signals other than those described above, and the time axis 1. Discs on which compressed audio signals are recorded, discs on which monaural audio signals are recorded on digital recording racks using 4-way channel repeating, and discs on which monaural audio signals are recorded on the There are discs in which two types of combinations of one channel of still and L images are recorded on a digital recorder/rack.

Here, since conventional disc reproducing apparatuses are configured to be able to originally reproduce conventional video discs and digital audio discs, they cannot reproduce the above-mentioned track mixed recording disk 34. However, it is possible to play a digital audio disc with a conventional disc playback device, and in this case, it is conceivable to make the notch-forming portion A3 of the lid 4 of the case 1 that accommodates the digital audio disc into a notch.

However, some of the conventional disc playback devices are not equipped with the microswitch 42, although they have the MA-R (Coswidth 41.43 and /14). The first side of No. 3 is a digital audio disc, and the above-mentioned notch formation planned portion A
3 with a notch formed, 1M 4 Glue notch formation planned portion At, A3 and A4 each have a notch t111
is formed, so all microswitches 41. /! 1. 3 and 44 collectively A) yell, and then) determine that the digital audio disc is not installed in the playback device and C yell. As a result, when the digital audio disc is loaded into the disc playback device, the loaded disc cannot be recovered, causing problems such as deformation of the disc. Therefore, in the case of a digital audio disc, it is preferable that the notch forming area A34 is a non-cutting area. Planned cutout area B+L of the lid 4 of the case 1 that stores one recording disk
The second part is a non-notched part, and the fourth part is a non-recorded surface.
0) Since it is pointless to identify 11゛1 information,
Notches I'13 Are all notches formed in the planned areas B2 to B4? I'll.

The following table summarizes the explanations for the following notches 81s according to the first to fifth information of the notch formation planned portions Δ1 to A5, B+, and B5.

However, in the table above, the ○ mark indicates the case where the notch is closed.
A blank column indicates a non-notched portion.First, an outline of the operation of mounting the disc 3 onto the disc playback device will be described. This tube loading operation itself is known as previously proposed by the applicant. First, when the operator operates the load switch after turning on the power to the playback device, the disk support device 414 in the disk playback device moves up to the upper position of the turntable.
The player will be able to insert the disc storage case 1 into the stomach. In this state, the operator holds the grip of the disc storage case 1 and inserts it into the reproducing apparatus in the direction of arrow X1 in FIG. '1. Then, after the crossing section 16 of the cover 4 passes through the clamp section in the reproducing device, the east crossing section 16 is loosely fitted, and the group card of the disc 3 is clamped by the clamp section. Thereafter, when the disc storage case 1 is pulled out of the playback apparatus in the direction of arrow x2 (31), the lid 4 and the disc 3 remain inside the playback apparatus, and only the case body 2 is pulled out. Further, the center portion of the disk 3 is lowered together with the disk support mechanism while being supported by the disk support mechanism, and is finally placed on the turn 7-pull. Here, in the inner part of the playback device facing the lid 4, there are microswitches 41, 42, 43, 44 and 4 as described above.
5 is set.

FIG. 8 shows a plan view of an example of the contact state between the lid 4 of the disk storage case and the microswitch according to the present invention. In the same figure, the same components as those in FIGS. What is the number? In Fig. 8, the front end portion of the C1 cooler 4 has notches 19 formed in the notch formation planned portions A1 and B4.
, a notch 20 formed in the notch formation scheduled portion B3, and a notch 21 formed in the notch formation planned portion [32] are provided, and the remaining notch formation planned portions Δ2.about.A5. B+
and B5 are considered to be non-cut portions. To this J:
- The fibro switch 41 is turned off because its switch protrusion 41a is not pressed by the notch 19. .48 are pressed by the wide flange 9 of the lid 4 and turned on, and the microswitch 45 is also turned on.

Therefore, since the microswitch 41 is off, it is identified that the IIJ raw side of this disk to be played is the first side, and a display to that effect is provided on the IIT raw device. 3. Also, micro switch/
1-4 is on, it is detected that at least an analog recording [-rack] is recorded on the playback surface of this disc. Also, since the microswitch 43 is on, it is detected that an analog recording track is formed on the playback surface of this disc. The composite video signal recorded on the 525-line HAL N T
It is detected that the signal is an SC color video signal. Furthermore, since the microswitch 42 is on, it is detected that the disc can be played only by the disc playback device without cooperation with an external device.

Each of the above detection results is displayed on a display as necessary.

The disc playback device is a disc playback device which selectively uses the track mixed recording disk 34 as a video disc, a digital audio sub-disc, etc., as disclosed in the patent application filed by the present applicant on the same date (title of invention [Information Recording Disk Playback Capacity]). It is a device that can reproduce composite video signals (4 fields per revolution) on the analog recording track of the disc.
When displaying a disc on which the N-1-8C system monitor is displayed on a monitor television receiver for the N-1-8C system, the turntable is turned on by turning on the ficro switches 43 and 44. Change the base tlL frequency of the motor circuit for rotating the turn tape so that the number of revolutions is 899.1rr+m. The master frequency of the digital signal demodulation circuit, which demodulates and reproduces the digital data at the sampling frequency and includes at least the B main circuit and the S correction circuit, is shown in Figure 3. 1 block [a frequency that is, for example, 140 times the transmission frequency of the digital signal for each clock unit (here, the transmission frequency is 44,056k 1-12 as explained in Fig. 2, so the master clock frequency becomes 6.1678 M)-IZ) and apply it.
When turned on, the muting operation of the mute ink circuit provided on the input side of the 1η raw audio signal output terminal is disabled, and the output of the reproduced sound returns to the normal state. Generally, each of the output signals from the micro switches/II to 44 is sent to a micro switch within the reproducing apparatus to perform the above operations.

d3, when the disc storage case 1 is inserted into the playback device with the second side of the disc sealed inside the disc storage booth 1 facing up with the lid 4 shown in FIG. 8, the micro switch 41. 45 is on, microswitch 42. /13 and 44 are turned off at /v when their switch portions 42a, 43a, and 44a enter the cutouts 21, 20, and 19, respectively. As a result, the playback surface is
1'i7, and it is detected that no signal is recorded on this reproduction surface.

Note that when the microswitch 44 is on, lI
3, and the microswitch 42 turns off lζ,
In other words, if the playback device determines to play back the 1~rack mixed recording disk in cooperation with an external device (such as a personal computer, etc.), if the playback device is not connected to the above external device, the playback will start. The device protects the speakers by muting all 74 audio output channels, and also has an open circuit whose operation is controlled to prevent the generation of sound.

d3. After the disc has been played, the disc support mechanism in the playback device 7 supports the center of the tick and moves the disc upward once again to a predetermined height position. What happens when the storage case is ready to be inserted?In this state, if you insert the empty disc storage case 1 without the disc 3 and lid 4, and the case main body 2 into the playback device in the direction of arrow X1, the state shown in FIG. The disc 3 in the playback device can be inserted through the opening 6 shown, and then continue inserting the case body 2 in the ×1 direction as shown in A until it is inserted deep into the playback device. The lid 4 is coupled to the lid 4. Thereafter, when the case body 2 is pulled out in the direction of the arrow X2 in FIG. The disc 3 and the lid 4 can be recovered.

Application Example The disk t stored in the disk storage case according to the present invention has a composite video signal recorded in a predetermined signal format on an analog recording track at a rate of 4 fields per rotation. Although it has been described as a digital camera, it is sufficient to use a disc recorded at a rate of N fields per rotation (where N is a natural number of 2 or more), or a conventional video recorder or digital audio recorder. Furthermore, as the information signal to be recorded, as previously proposed by the present applicant in Japanese Patent Application No. 13944/1982, the information signal is transmitted between an external device with a judgment function such as a personal computer and a disc playback device. It also includes programs for interactive control.

Furthermore, although the present invention has been described so as to be compatible with digital audio discs and video discs proposed earlier by the present applicant, the present invention is not limited to this, and can be played back in a 4J11 format where the green signal can be read with a light beam. Of course, the present invention can also be applied to discs, and can also be applied to discs of which type the reference signals f1.+"-fp3 are not recorded.

In addition, the information signals recorded in digital recording 1 to 4 channels include information signals other than audio signals (
For example, video news 8) Why, for example, Shiroji! 114. You can also send the telephone directory to Yuki.

Effectively, if the present invention is used as described above, one of the two functions of cog recording mill rack and digital recording
~A record was formed with a mixture of lacquers, or it was lost.
) is sealed inside the case body with a lid, and at least an analog recording track is recorded at a predetermined position on the lid of the disc storage case. , the first switch of a plurality of switches installed at predetermined positions facing the front end portion of the lid in the playback device is designated as A, and a non-cut portion is formed, and the digital recording [-rack only] When a recording is being formed, turn the first switch A) to form a notch that allows the disc to be judged primarily by the playback device.
When connecting an external device with multiple layers and reloading the disc, use a notch to turn off the second switch of the plurality of switches mentioned above, or a non-cutout part to turn it on. A cutout portion or a non-cutout portion for at least re-discriminating one surface and the number of scanning lines is formed in front of the lid facing the third and fourth switches of the plurality of switches. Since I selectively set the part, the above-mentioned Ana[
] Automatically, accurately and reliably detect the playback surface and recorded information content of a disc that is recorded with a mixture of hard disk and digital recording tracks.
As a result, it is possible to automatically and accurately switch the required circuit sections in the reproducing device, and the second
Even in a playback device that does not have a switch, the playback surface and recorded information can be identified without any practical problems, and single-sided recording discs can also be identified.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention, and FIG.
The figure is a block system diagram showing an example of the recording system proposed by the applicant for the information signal recording disc housed according to the present invention. FIG. 4 shows an example of the signal format 1 of each address code recorded on the digital recording 1-rack of the information signal recording disk. The figure shows an example of the signal format of the digital video signal recorded on the digital recording tracks 1 to 1 of the information signal recording disc, and Figure 6 shows the frequency spectrum of the signal recorded on the analog recording track 1 of the information signal recording disc. Fig. 1 shows an example of the ram, Fig. 7 shows the correspondence between the notch forming part of the main part of the present invention and the microswitch in the regeneration HU, and Fig. 8 shows the main part of the present invention and the regeneration device. FIG. 9 is a plan view showing an example of the state of contact with the microswitch inside, and FIG. 9 is a diagram showing an example of the frequency spectrum of the frequency modulated wave signal and the reference signal recorded on the digital recording track. DESCRIPTION OF SYMBOLS 1...Dake storage case, 2...Case body, 3゜34...Information signal recording disk (disk), 4...Lid (lid plate), 7...Main body, 8... Engaging arm, 9... wide flange part, 16... crossing over part, 17a, 1
7b...Notch for hanging the device, 18a...Left side end, 1
．． 8 b...Right end, 19, 20.21...Disc discrimination notch, 2.5.26...I) CM recording/playback (number, 28...Digital signal processing circuit-1 ，，
32...Analog signal processing circuit, 710...Virtual line, 41-45...Micro switch, A1-△5,8
1 to B5: Notch formation planned portions. Figure 7-437- Figure 9

Claims (2)

[Claims] (1) The modulated wave signal obtained by analog modulation with an information signal including at least a composite video signal is one rotation source N field
One block is constructed by adding at least redundant pitch 1 to the analog recording tracks recorded at a ratio of (N is a natural number of 2 or more) and the digital data of multiple channels A7 obtained by digitally modulating the information signal. However, among the digital recording tracks 1 to 4, in which the digital signals synthesized in time series for each block are further modulated and recorded, both tracks are mixed to form a recording, or one of the tracks is recorded. The information signal recording disk, on which only 1 to 100 pieces of information are recorded, is fixed inside the case body using indigo.
The information signal recording disk and the lid are respectively left in the playback device by being inserted into the playback device with the longitudinal direction facing forward and then pulled out, and the front end portion of the remaining disk is removed. An information signal recording disk storage case that turns on any one of a plurality of switches installed in the playback device, the case passing through the rotation axis of the information signal recording disk and parallel to the insertion direction. Asymmetry around the virtual line 1
At least the analog recording track is recorded on the information signal recording disk at the front end portion of the lid facing the plurality of switches provided at positions q. A non-cutout part is formed to turn on the switch, and a notch is formed to turn off the first switch when only the digital recording/recording track is being recorded. This is an information signal recording disk that is to be played back by connecting an external device with the above-mentioned playback function to the above-mentioned playback device. and a notch or non-cutout portion for at least determining the scanning line number system of the recorded composite video signal of the reproduced surface of the information signal recording disk and the analog recording track. The third switch among the plurality of switches. selectively provided at the front end portion of the code facing the fourth switch, and when the information signal recording disc is present in the playback device, at least the second switch is excluded from the plurality of switches. An information signal recording disk storage case characterized by being configured such that either one of the switches is used as a precept. (2) When the information signal recording disk (out of both sides of the information signal recording disk) is unrecorded on four sides, when the playback device is installed to play back the non-recording side, the front end of the 3, and at least the first, second, and fourth switch contacts are
The information signal recording disc storage case as set forth in item 1 of the scope of the specification rt'ar1, characterized in that it is configured to form a notch that serves as an opening.