JPS5942653A - Optical disk - Google Patents

Abstract

PURPOSE:To obtain an optical disk which is capable of storing and reproducing under an optimum condition, by providing a discriminating code storage area for storing a discriminating code for showing a characteristic of the optical disk on the optical disk, and an information storage area for storing the information. CONSTITUTION:An optical disk 19 is provided with a discriminating code storage area 19b for storing a discriminating code given at the time of delivery from a factory, a completion data storage area 19c which can store a data given when the discriminating code is stored in a floppy disk, a picture information storage area 19e, and a titled dump list storage area 19f for storing the picture information of a retrieval data. In the discriminating code storage area 19b, year and month of storage, and a manufacturing number are stored as control information with a film, depth of a groove and track pitch information are stored as original disk information, a series number is stored as stamper control information, and a film structure and film thickness are stored as film forming information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a source disk used in a source disk device for storing or reproducing information.

[Technical background of the invention]

In recent years, image information such as documents, which has been increasing significantly, is stored in an information file device, for example a former disk storage device, and required image information is extracted as needed from among the various image information stored in this optical disk storage device. An information retrieval device has been developed and put into practical use. By the way, in the case of an optical disk storage device used as an information file device, for example, @t2 t is a laser beam)
By optically scanning the white line at 0, information such as the white line on the front side of the text is transformed into an electrical signal, and by modulating this analog signal with F''M, it is stored.
The n12f turns on and off the laser beam by a signal fc1iL, and the modulated laser beam is transferred to an original disk (rotating at a constant speed, for example, made by depositing a metal coating layer on a Gazis disk). By irradiating the metallized jA layer onto the top of the disk (which is in contact with the beam) and melting and deforming the metallized layer in proportion to the modulation content of the beam light to form a bit circle, a tHη1 pattern is formed in a track shape as the original disk rotates. I try to remember it. Also, in this way you can
1) If the information is not read out and the information is not read, the optical disk is rotated at a constant speed, and a laser beam is irradiated onto the information storage track by rotating the rotating Br and b' on the disk to remove the original disk. By reading out and scanning with the rotation of the disk, the reflected light modulated according to the bit arrangement stored in the disk is emitted (1).By photoelectrically converting this reflected light, The stored information is read out.

[Basic points for background technology]

However, such optical discs as described above do not store identification information such as serial numbers and characteristics. For this reason, the optical disk device may not be able to store or reproduce image information under optimal conditions, and in this case there is a problem in that tracking errors, storage or reproduction errors, etc. occur.

[Purpose of the invention]

This invention has been made in view of the above circumstances, and its purpose is to improve the performance of various original disk devices under optimal conditions as described in 1. The goal is to provide original discs that can be played back.

[Summary of the invention]

In this invention, an identification code storage area for storing an identification code representing characteristics of the original disc and an information storage area for storing information are provided on an optical disc.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show the configuration of an image information file device according to the present invention. In other words, 1 is the main control device υ, various? CPU J that controls Iil+
2. Main memory 13, at least one unit (original-
A buffer memory (for example, a page buffer 14) having a storage capacity corresponding to the image information (negative sign), and a buffer memory (for example, the page buffer 14) that has a storage capacity corresponding to the image information (negative sign);
a compression/expansion circuit 15 that performs (reducing redundancy expansion) and expansion (returning reduced redundancy expansion), a mother turn generator 16 in which i9 turn information such as characters and symbols is stored, and a display interface 17 , and a title memory 18 that stores search data read from a floppy disk 28, which will be described later. Reference numeral 20 denotes a reading device, such as a two-dimensional scanning device, which obtains electrical signals corresponding to image information on the document 21 by two-dimensionally scanning the document (document) 2z with a laser beam source. Reference numeral 22 denotes an optical disk device which sequentially stores image information scanned by the two-dimensional scanning device 2o and supplied via the main controller 1 and index information created by the main controller 11 on the optical disk 19. It is something to do. As shown in FIG. 3, the original disk 19 is made of a circular substrate made of glass or plastic, coated with a donut-shaped metal coating layer such as tellurium or bismuth on the surface of the substrate, and the gold side There is a notch near the center of the coating layer! 1.9 Reference position mark 19. 5, and the above-mentioned optical disc 1
9, a blank area 19a1 for reading eccentricity correction data from the innermost track 1111; an identification code storage area 1 for storing an identification code given at the time of factory shipment;
9b1 Complete data collection Floppy disk 2 (described later)
Completion data storage area 19C1 that can store data given when the identification code is stored in 8. First dummy data storage area 19d1 for cueing the image information storage area 19e. Image information storage area 19e1 and search data. A title dump list self-storage area 191 is provided for storing image information. As shown in FIG. 4, the identification code storage area 19b includes the storage year (last 1 digit), month (1 to 9. ~999
9) is memorized and the depth of the groove is memorized as the original information.
00X=07.1000X=10) and track pitch ffi information (for example, 3μm=30.2μm=2012.
5 μm = 25) is stored, a series number (001 to 999 is set to 1.
Jf! I → 2.3 layer → 3, TeC-Q) and is(ta(!: k ha2/s = o, 8.2/16 =
16.300X=03 (TeC)) is stored,
The month and year of serial number recording is stored as warehouse information.

Furthermore, as shown in FIG.
It is divided into sectors.

On the other hand, 23 is a key bead for inputting a unique search code and various operation commands corresponding to image information. Reference numeral 24 denotes an output device such as a cathode ray tube display device (hereinafter referred to as a CRT display device) serving as a display section, which displays image information read by the two-dimensional scanning device 20 and supplied via the main controller 11, or an optical disk. The main controller is read from the device 22.

Search codes and I! supplied via I! 025 is a recording device that displays image information, etc., and together with the display interface 17 in the main control unit @11 constitutes a significant image information display device. It outputs as a hard copy 26 the image information supplied via the main controller 1, or the accumulated data and image information read from the original disk drive 22 and supplied via the main controller 11. It is. Reference numeral 27 denotes a floppy disk IT, which stores the search data consisting of the search code input into the key bead 23 and the storage address on the optical disk 19 in which the one pot information corresponding to this search code is stored. (storage medium) 28 for each piece of image information. An identification code storage area 28a is provided on the floppy disk 28 to store an identification code.

FIG. 6 shows the structure of search data.

That is, the number of search digits is made up of, for example, a 20-digit search code divided into six items at maximum and five-digit address information. The above address information consists of 1-digit image information length (7 digits) L, 2-digit image information storage track address (track number) T-ADH, and 2-digit image information storage sector address S-ADR. It's dark.

Figure 7 shows the original disk device 22 according to the present invention. That is, the optical disc 19 is placed and fixed on the turntable 31. The turntable 31 is directly connected to a motor 33 via a rotating shaft 32, and is rotationally driven by the motor 33. Further, as shown in FIG. 8, a timing signal generation disk 34 is fixed to the rotating shaft 32, on which six signal generation marks 34M are provided at regular intervals. , mark 34 on this disk 34
When the position detector 35 optically detects M, the position detector 35 outputs 76 pulses for one rotation of the disk 34. Further, a reference position detector 36 is provided near the turntable 31 at the bottom of the optical disc 1. This reference position detector 36 detects the reference position mark 191 on the original f4 screen 19, and is, for example, a well-known photodetector consisting of a light emitting element and a light receiving element.

Further, on the back side of the optical disc 19, data recording,
An optical head 4 for reproduction is provided so as to be movable in the radial direction of the optical disk 19. This optical head 41 includes a semiconductor radar oscillator 42 that generates a laser beam source, a collimating lens 43, a beam sinter 44, a rubano mirror 45, a λ/4 wavelength plate 46, an objective lens 47, a convex lens 48, and a source disk 19. Light-receiving elements 491 and 492 that perform photoelectric conversion upon receiving reflected light from
It is composed of a two-split optical receiver 49 and the like. The outputs of the light receiving elements 491 and 492 are output to adders 50 and 71, respectively.
and is also supplied to the differential amplifier 51.

The output of the adder 50 and the output (positional deviation signal) of the differential amplifier 51 are supplied to an eccentricity detection circuit 52. The eccentricity detection circuit 52 detects the Ig number and the direction eccentricity corresponding to the track (groove) crossing the original disk 19 according to the outputs of the adder 50 and the differential amplifier 51.

Further, the output of the eccentricity detection circuit 52 is supplied to a memory circuit 53, and the memory circuit 53 is connected to the reference position detector 36.
, and the output of the position detector 35 are supplied, and
A mode switching signal from a control circuit 54 is supplied. When in the eccentricity storage mode, the B memory circuit 53 divides the period from when the reference position detection signal is supplied until the next detection signal is supplied into 608 sectors according to the detection signal of the position detector 35, and each sector is divided into 608 sectors. It stores signals and directions corresponding to the amount of eccentricity (eccentricity correction data) and the track (groove) that the wheel traverses. Further, the memory circuit b@53 outputs the stored eccentricity correction data in synchronization with the lateral signal (M number) of the position detector 35 during the recording and reproduction modes.

The output of the adder 71 is supplied to a binarization circuit 72, and the signal binarized by the binarization circuit 72 is demodulated by a demodulation circuit 73 and supplied to the control circuit 54. The output of 53 is supplied to a control circuit 54.

This control circuit 54 controls the entire original disk device 1f22 in response to signals from the CPU 12).
For example, the linear motor driver 56 is controlled by supplying an output signal from the memory circuit 53 to the linear motor driver 56 via the D/A converter 55. Further, when the control circuit 54 determines to record the first dummy data, the control circuit 54 outputs the dummy data recording signal and records data for 64 tracks on the 6 optical heads 4.
This controls the movement of The recording of the 64 tracks of dummy data is performed to locate the beginning of the image information storage area 19e during storage and reproduction. The linear motor driver 56 moves the optical head 41 using a linear motor mechanism 57 in accordance with the supplied signal, so that the beam source of the optical head 41 always tracks and irradiates a predetermined track. The linear motor machine 4s57 moves the optical head 4 in the radial direction on the original disk 19.

Further, the output of the differential amplifier 51 is supplied to a galvanometer mirror driver 58. This galvano mirror driver 5
8 drives the driving coil 45M of the galvano mirror 45 in response to the positional deviation signal from the differential amplifier 51, and by rotating the galvanomirror 45, accurate positional deviation detection and track tracking based on the detection are performed. (tracking). That is, as the galvanomirror 45 rotates, the amount of eccentricity that could not be corrected by the near motor mechanism operated by the eccentricity correction data is tracked.

On the other hand, the modulation circuit 6 performs MFM modulation on one page of image information sequentially supplied from the page buffer 14 and then outputs it or outputs dummy data. A pattern generator 63 generates dummy data, a track number generator 64 generates track numbers, an AND circuit 65, and an OR circuit 66.

That is, the modulator 62 modulates the recording data supplied from the page buffer 14 or the track number from the track number generator 64 according to a control signal from the control section 54, and this modulated signal is outputted via an OR circuit 66. In addition, the main turn generator 63 outputs dummy data in response to a control signal from the control unit 54, or outputs dummy data from the AND circuit 65 in response to control signal 16 from the control unit 54. The track number to be determined is outputted via an OR circuit 66.

The output signal of the modulation circuit 61 and the output signal of the υOR circuit 66 are supplied to a laser driver 67. This laser driver 62 controls the drive fi of the laser oscillator 42 according to the supplied data. Ru.

Next, the operation will be explained in such a case: S<Ji'J. For example, a not-shown electrolytic burner is applied, and the original disk 19, which does not store any image information, is set in the original disk device 22, and the floppy disk 28 is placed in the floppy disk device 27.

When the eccentricity storage mode is set using the keyboard 23, the CPU J 2 supplies the mode signal to the control circuit 54 in the optical f' isk device 22. Then, the control circuit 54 outputs a predetermined signal to the linear motor driver 56 via the D/A converter 55. At this point, the linear motor driver 56 drives the linear motor mechanism 57, and sets the blank area 19aK of the innermost track of the fZ science head 41. Next, the control circuit 54 causes the laser oscillator 42 to output a reproduction beam light by operating the laser driver 67), and causes the objective lens 47 to image it onto the innermost track. The light reflected from the track on the original disk 19 by this reproduction beam light is guided to the light receiver 49, where it is optically converted into an electric signal and sent to the light receiving elements 491, 4.
Each output signal of 92 is supplied to an adder 5o and a differential amplifier 5no, respectively. Then, the adder 50 outputs a signal corresponding to the sum of both outputs, and the differential amplifier 5 outputs a positional deviation signal according to the difference between the two signals. In addition, these signals are used by the eccentricity detection circuit 52 as direction and track signals when eccentricity occurs. In response to these signals, the storage circuit 53 stores the eccentricity at an address corresponding to the detection signal from the reference position detector 36 and the detection signal from the position detector 35. In this case, the memory circuit 53 contains the original disk 19.
is divided into 608 sectors, and eccentricity correction data for each sector is stored.

Therefore, when storing and reproducing image information, the storage circuit 5
The linear motor driver 56 uses the eccentricity correction data of 3.
By operating the optical head 41, the optical head 41 is made to correspond to a predetermined track.

Next, the CPU 12 outputs a control signal to the control circuit 54 to set the optical head 41 in the completed data storage area 19c of the original disk 19. Then,
The control circuit 54 operates the radar driver 67 to cause the laser oscillator 42 to output a reproduction beam, and the objective lens 47 focuses the reproduction beam on a predetermined track. The light reflected from the track on the optical disk 19 by this reproduction beam light is guided to the light receiver 49, where it is photoelectrically converted into an electric signal, and the light is transmitted to the light receiving element 49. ．． Each output signal of 492 is supplied to the adder a and the adder 7. Then, the output of the adder 71 is binarized by the binarization circuit 72, demodulated by the demodulation circuit 73, and supplied to the control circuit 54.

As a result, the contents of the completed data storage area 19c are read out and supplied to the CPU Z2. And the CPU
When the CPU J 2 determines that no completion data is stored in the completion data storage area 19c, the CPU J 2 extracts the stored contents of the floppy disk 28 and records them in the title memory 18. Next, the CPU J 2 determines whether an identification code is stored in the contents of the floppy disk 28 stored in the title memory 18, and if the identification code is stored, the CPU J 2 supplies error data to the display interface 17. The error is displayed on the CRTf display device 24. Further, if the identification code is not stored in the storage contents of the floppy disk 28, the CPU J 2 reads the identification code from the identification code storage area 19b of the optical disk 19, and stores this job classification code in the identification code storage on the floppy disk 28. Area 2
8g, and the completion data is also stored in the completion data storage area 19c of the optical disc 19.

Further, the CPυ-2 can determine whether it is the desired source disk from the station from which the identification code was read and the serial number (management information) in the identification code. Furthermore, by changing the processing conditions according to the characteristics of each side (in the identification code), the optical f'4 screen device 22 can be used under optimal conditions and can perform optimal storage and playback. has a track pitch of 3 μm
When reading data, a corresponding scale conversion is performed.

Next, the control circuit 54 outputs a control signal to the AND circuit 65 and the pattern generator 63, and also drives the linear motor driver 56 to control the optical head 41.
First dummy data 8 1. Cause Haeria to respond to 19d. Then, the turn generator 63 supplies the dummy data "55" and the track number from the track number generator 64 to the laser driver 67 via the OR circuit 66. The laser driver 67 switches the raw beam light to the storage beam light according to the supplied signal,
Do memory. As a result, the dummy data "55" is stored in the first dummy data storage area 19d of the optical disc 19.
” and track numbers are stored over 64 tracks every 0.5 ms.

Therefore, when storing the first image information, access to the storage start track is temporarily limited to the gummy r-ta area 19.
After accessing d, it is only necessary to access the corresponding number of tracks, so that access can be performed reliably.

Next, to explain the registration (arrangement) of image information, the keyboard 23 is selected and set to the registration mode, and the search code for the information of the two hearts 17 to be registered is entered. This is υ, C
PU J 2 checks the validity of input data (cyclic redundancy check, CRC) based on the number of digits, character type, etc. according to the predefined search code format, and also checks already registered search codes to prevent duplicates. If the search code is correct as a result of these checks, the main memory 13
is memorized. Then, the original is set in the two-dimensional scanning device 20, and the CPU 12 operates the optical disk device f22 and the two-dimensional scanning device 20. The two-dimensional scanning device 20 is
The set alternating images ↑h information are two-dimensionally scanned and photoelectrically converted. This original T4 converted line information is sequentially stored in the page buffer 14.

When the image information for one member is stored in this page buffer 14, the image information is stored in the display interface 17, and the image information is stored in the CRT display device 24.
is displayed. By the way, if the image displayed on the CRT "i" display device 24 is satisfactory,
Insert a recording key (not shown). Then, the CPU
12td, the image information for one unit stored in the page buffer 14 is compressed for each line information by the gd decompression circuit 16.
The band is compressed by the well-known MIN (Modifier Hofmann) exchange, and the compressed line information is supplied to the optical disk device 22. The optical disk device 22 then stores the supplied image information in the tracks of the image information storage area 19e on the optical disk 19. That is, the control circuit 5
4 outputs the signal of the track corresponding to the first dummy data storage area 19d to the D/A converter 55.

Thereby, the linear motor driver 56 drives the linear motor 4 by operating the linear motor mechanism 57. Then, when the optical head 41 stops, the control circuit 54 reads the track number of that track and outputs the difference track jump number and pulse from the storage start track to the linear motor driver 56, thereby moving the wide optical head 4. urge When the optical head 4 corresponds to the storage start track, the control circuit 54 outputs a control signal to the modulator 62.

Then, the modulation mD 62 modulates the track number from the track number generator 64 and the information signal in the page buffer 14 bit by bit, and supplies it to the laser driver 67 via the OR circuit 66. The radar driver 67 performs storage by switching the reproduction beam light to the storage beam source in accordance with the supplied signal.

When the storage of this image information is completed, the CPU J 2 stores the storage address such as the track number where the image information is stored, the start/separation/length, and the length of the image in the main memory 13 in correspondence with the search code. Remember. Next, CPU J
2 supplies the search data block stored in the main memory 13, such as the search code, track number, and image length, to the floppy disk device 27, as well as a serial number that is the number of times the image information is stored. Accordingly, the floppy disk device 22 stores the supplied search data and its serial number on the floppy disk 28. Thereafter, other image information operates in the same manner and is stored in the image information storage area 19c on the optical disk 19.

And the lower two digits of the above serial number are "roo" or "
50'', the CPU 12 sequentially reads the search data from the floppy disk 28 of the Fronby disk device 27, starting from the 50th serial number ``51'' or ``01'', and converts it into image information using the pattern generator 16.・Sequentially stored in the page buffer 14. Then, when one page of image information "51-00" or search data of serial numbers r01-50J is stored in the page buffer 14, the CPU 12 stores one unit of image information stored in the zip buffer 14. The image information of each line is compressed by MH conversion in the compression/expansion circuit 15, and the compressed line information is supplied to the optical disk device 22. Accordingly, the source disk device 22 stores the image information of the supplied search data group in the title dump list storage area 191 on the optical disk 19 and in a predetermined track on the outer periphery of the source disk 19 shown in FIG. I remember it.

When the storage of the image information is completed, the CPU 12 supplies the floppy disk device 27 with the last track number in which the image information is stored. At this point, the floppy disk device 27 stores the final track number in the track number storage area 28a on the floppy disk 28.

From then on, for each 5o image information, the floppy disk 28
Using the track numbers sequentially updated and stored in the track number storage area 28a, the CPU J 2 stores information obtained by converting the image information search data into image information in the image information storage area 19e on the optical disk 19. .

Next, a search for image information registered as described above will be explained. First, the key bead 23 is set to search mode and a search code is input. Then,
CPU 12 transfers the search code to floppy disk 2.
8. Sequentially compare and match the search code stored in step 8, and check sequentially whether the search code matches the input search code. If the search code matches, the search code corresponding to that search code is executed. Image information track number and start! Search sector number. Then, the CPU 12 causes the original disk device 22 to reproduce the track on the optical disk 19 corresponding to that track number. Then, C
The PU 12 supplies the image information (compressed information) from the optical disk device 22 to the compression/expansion circuit 15 for each scanning line, performs band expansion by forward/reverse conversion, and sequentially supplies the original image information to the page buffer 14 . In this way, when all the image information for one reproduced page is stored in the page buffer 14, the CPU J 2 displays the image information on the CRT display device 24 using the display interface 16 or displays it on the recording device 25. A hard copy 26 of the image information is issued.

Thereafter, other searches are performed in the same manner.

By the way, if the corresponding floppy disk 28 is destroyed or lost, the source disk 19 corresponding to the floppy disk 28 is set in the source disk device 22, and the floppy disk 28 that does not store any search data is replaced. The settings are made in the disk device 27. Then, the keyboard 23 is set to the search data playback mode. Then, the CPU 12 operates the original disc device 22 to reproduce the image information from the first track (predetermined) of the title dump list storage area 19f of the original disc 19. As a result, the wide CPU J 2 receives the iI from the optical disk device ff, 22.
! II image information (compressed information) is supplied to the compression/expansion circuit 15 for each scanning line, and the original image information is sequentially supplied to the page buffer 14 by performing band expansion using M] When all the image information for one page reproduced on disk 1 is stored, the CPU 12
9 is stored in the main memory 13, and its image information is displayed on the display interface 1.
6 is used to display the bowl image information on the CRT display device 24, or the recording device 25 issues a hard copy 26 of the image information. Accordingly, the p1 operator sequentially inputs the search data into the key date 23 as displayed on the CRT display device 24.

Then, the CPU J 2 transfers the supplied search data to the floppy disk 2 using the floppy disk device 27.
8 to be memorized.

After this, the CPU 12 writes the optical disk device 2 to the track next to the last track number stored in the main memo IJ 13.
2, and play the image report from this track. Thereafter, by operating in the same manner as described above, the image information is displayed on the CRT display device 24, and on this display, the operator inputs p search data into the key bead 23, and the search data is transferred to the floppy disk 28. stored above.

Thereafter, the image information of the search data is reproduced from the title dump list storage area 191 on the original disk 19 in the same manner as described above, and the search data is transferred to the keyboard 23 according to the reproduced output.
The instructions are inputted and stored on the floppy disk 28.

Therefore, as described above, even if the floppy disk 28 is destroyed or lost, the original disk 19 for the floppy disk 28 can be used again.

〔Effect of the invention〕

As described in detail above, the present invention provides an optical disc that can be recorded and played back in 11-focus format by various optical disc devices under optimal conditions.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, and FIGS.
The figure is a schematic diagram of the image information file device, Figure 3 is a diagram showing an example of storage of the original disk, Figure 4 is a diagram showing an example of storage of identification codes, and Figure 5 is a diagram showing a storage example of an identification code. 6 is a diagram showing an example of storage of search data, FIG. 7 is a schematic configuration diagram of the original disk device, and FIG. 8 is a diagram showing the arrangement of an optical disk and a disc for generating timing signals. A perspective view showing the relationship. 11... Main control device, 12... CpTJ, 19...
・Original disk, 191...Reference position mark, 19a・
...Blank area, 19b...Identification code storage area, 19c...Complete data storage area, 19d...
First dummy data storage area, 19e... Image information storage area, 19f... Title data list storage area, 22... Original disk device, 27... Floppy disk device, 2B... Floppy disk,
28a...Identification code storage area, 35...Position detector, 36...Reference position detector, 4...Optical head, 52...Eccentricity detection circuit, 53...Eye memory Circuit, 54... Control 1 circuit, 56... Linear motor driver, 61... Modulation circuit, 72... Binarization circuit, 7
3... Demodulation circuit. Applicant's representative Patent attorney Takehiko Suzue Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] An optical disc used in an optical disc device for storing and reproducing information is characterized in that an identification code storage area for storing an identification code representing characteristics of the original disc and an information storage area for storing information are provided. Original disc.