JPH0317832A - Recording and reproducing system for optical disk - Google Patents

Abstract

PURPOSE:To input/output information without necessitating to perform mechanical tracking by disposing a part in which the fixed information is recorded at an initial time and a part in which the fixed information is not recorded in the same disk and only performing the read-out of the information in the initial recorded part in an optical disk for recording, reproducing and erasing by means of laser light. CONSTITUTION:The initial recorded part functioning as a ROM part and the no-recorded part are disposed in the same sector on the same track, and the information of which frequency in use is high is stored in advance in the ROM part, and protection is performed by software so that the information may not be erased. And the management is performed in each sector and the ROM part and the no-recorded part are disposed in one sector, and the rate is fixed corresponding to a using purpose. Thus, it is easy to input/output the information, and the function of the system can be improved and the access time can be shortened.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to optical disc recording, reproduction, or erasing using laser light, which can improve high-speed access and ease of use. Concerning playback methods. [Conventional technology] With the recent development of an advanced information society, the need for high-density, large-capacity file memory is increasing. Optical discs are attracting attention as a solution to this demand, and are being researched and
development is underway. By the way, the difference between optical disks and magnetic disks is that the access time is slower.
Attempts to address this difference are being considered in various places. All of the currently known methods focus on reducing access time, and it cannot be said that sufficient consideration has been given to the ease of use and functionality of the entire system. As a conventional example of such a recording/reproducing method for an optical disc, for example, Japanese Patent Laid-Open No. 62-128
Examples include No. 040. [Problems to be Solved by the Invention] The above-mentioned conventional technology has not been sufficiently designed to reduce the time required for inputting and outputting information, so-called access time, considering the entire optical disk system, and to improve the ease of use of the system. There were problems such as it took a long time to access and was difficult to use. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a recording/reproducing method for an optical disc that has flexible access times, is easy to use, and has multiple functions. Optical memory differs from magnetic disks in that it requires a longer access time to read and write information. As a method to deal with this problem, we invented the initial recording of frequently used information (ROM). That is, a recorded portion and an unrecorded portion are provided within the same disk, and more advantageously, these two portions are formed on the same track. Furthermore, a recorded portion and an unrecorded portion may be formed on the same track for each sector. In both cases, the access time has been reduced, and functionality has also been improved because there is no longer a need for manual input each time information is used, and information can be retrieved easily.

This effect can be applied to any type of disk, including write-once optical disks that can record only once, and reversible optical disks that utilize magneto-optical recording or mutual eclipse. In other words, discs other than read-only optical discs,
That is, any type of disc that can be recorded at least once may be used.

In addition, the information recorded initially has a "blank map" element, and the details are to be processed and used by the user as he or she wishes.The information recorded initially is The more frequently it is used, the more effectively the present invention works.
The information may be related to information management within the disc. This ROM part may be formed by the user himself. It is important to provide a ROM area and a rewrite area. Furthermore, considering the speed at which information flows in and out,
Efficiency can be improved by providing the above two areas in Koichi track 7. In addition, on the same track and those two
The seed area may be for each sector, or there may be a plurality of sectors. Furthermore, these two areas may be provided within one sector.

By the way, in order to provide an initial recording area (ROM area) and an unrecorded area, the initial recording information is formed as pits at the same time as uneven guide grooves are formed on the disk substrate, and then rewriting is performed on the initial recording information. An initial recorded portion and an unrecorded portion were created by forming an lf-no-oJ backlit recording medium.μ■
As a backlight recording medium, any of the following methods may be used: a method that utilizes reflectance change upon phase transition, a method that performs recording and reproduction using magneto-optical properties, or a method that utilizes photochromism or electrochromism. It may also be a so-called write-once optical disc that can be recorded only once using a hole punching method. In addition, an initial recording section was created by recording with a drive on an optical disk that had been formed into a rewritable optical recording medium or a write-once optical recording medium as usual. In this case, discs using rewritable media may be more convenient if software is installed to prevent rewriting, so that the initially recorded information is not accidentally erased. In addition, information specifying a write-protected area may be recorded on a part of the disc. In the case of write-once optical recording, re-recording to the initial recording area will cause data destruction, so software with the same purpose as above may be provided. Furthermore, an initial muddy portion may be formed by performing recording on a rewritable Nomachi backlight recording medium under conditions such that I3f inversion is lost. Specifically, it is effective to irradiate a laser beam with a narrower power than the normal recording power, for example.
[Function] By providing an initial recorded portion (ROM portion) and an unrecorded portion within the same disk, access time can be shortened by easily retrieving frequently used information, and the entire system becomes easier to use. In particular, by providing an initial recorded part (ROM part) and an unrecorded part on the same track, by making each sector a ROM sector or an unrecorded sector, and by having a plurality of these sectors in succession, the read head Since this method does not require large movements, frequently used information can be retrieved quickly. [Example] Hereinafter, the details of the present invention will be explained by referring to Examples 1 to 6. [Example Work] The disk used in this example is a magneto-optical disk, and the number of sectors is 17. Here, there is no relationship between the gist of the present invention and the number of sectors. In this embodiment, as shown in FIG.
FjJ-located in the same sector on the track. The ROM section is pre-stored with frequently used information, and software protection is applied to prevent this information from being erased. The installed IM/ in this embodiment is managed for each sector, and a ROM part and an unrecorded part are provided in the sector, and the ratio can be determined according to the purpose of use, and the effectiveness of the present invention is affected. It will not affect you. Since the l+OM section and the unrecorded section are located on the same track, information can be easily input and output. If they are not on the same track, a mechanical part is involved in positioning, so it takes time to input and output information, which is disadvantageous compared to when they are provided on the same track.

Although this embodiment uses a magneto-optical disk as the disk, it is also possible to use a disk that utilizes phase transition or a write-once optical disk that can record only once, depending on the recording method and principle of the disk. The effectiveness of the invention is not affected.

Furthermore, by using the present invention, the basic pattern is stored in the ROM section, the user takes out the information, processes it according to the user's purpose, stores the processed section in the unrecorded section, and edits both when outputting. It is easy to use and the functionality of the system has improved. [Example 2] In this example. A ROM section and an information unrecorded section were provided for each sector, and they were provided alternately. A schematic diagram is shown in Figure 2. The disk utilizes phase transition and has 32 sectors, and the recording material includes, for example, (U a '1'' e-S
Chalcogenide compounds such as e-'rQ were used. It goes without saying that the gist of the present invention is not affected by the recording material or its method. This embodiment is an example in which an initial recorded portion (ROM portion) and an unrecorded portion are alternately provided every two sectors on the same track. In this embodiment, (1) All sectors are either ROM sections or unrecorded sections. In this embodiment, it is set every two sectors, but the ROM
Depending on the content of the information to be stored, more or fewer sectors may be used. Further, the number of ROM sectors and the number of sectors of unrecorded portions do not need to be the same, and either portion may be larger or smaller.

The gist of this embodiment is to provide a ROM section and an unrecorded section on the same track. By doing this, you can increase the frequency of use f+! The calculation can be easily retrieved, and the crystal speed can be accessed easily.

This portion may be provided over all the tracks of the disk, or may be provided on a portion of the tracks.

Although this embodiment deals with an optical disc in which recording and erasing are performed using the synchronization, the effects of the present invention do not depend on the recording or erasing method. It goes without saying that similar effects can be obtained with magneto-optical disks and write-once disks. [Embodiment 3] In this embodiment, an initial recording section (ROM section) and an unrecorded section are provided in each half of all sectors on one track, and the situation is shown in Fig. 3. The remaining 2 sectors to 9 sectors are the ROM section, and the 10th sector to 17 sectors are the unrecorded section.The disk used in this example is a magneto-optical disk, and the recording expansion is
゜b-Fe-CO based amorphous alloy was used. However, no matter which type of optical disc you use, it will not affect the effects obtained by this system. Further, in this embodiment, the ROM portion and the unrecorded portion have the same ratio, but there is no problem in arbitrarily changing the ratio depending on the purpose of the disk or the content of stored information. In this way, by using different recording areas on the disk, frequently used information can be easily retrieved, and the information does not have to be manually retrieved each time, so high-speed access is possible with I21.
I became capable. [Example 4] The present invention provides initial recording information pits (
ROM part) was formed. On top of that, P b 1're
-Sa record 11! A (write-once type) or 1°b? 'e
co system record 11'Jl change type) or G e Te
An optical disk was fabricated by forming a 08 body layer including a rewritable type of Sb yarn.

The pit was set at a distance of IWt &1m similar to Examples 1 to 3.

That is, a ROM section and an unrecorded section may be provided within the same sector, a ROM section and an unrecorded section may be provided every few sectors, or a ROM section and an unrecorded section may be separated from each other. It was set up in Forming the ROM portion as pits in this manner also has the advantage that even if data is accidentally rewritten, it will not be possible to record.

When the thus prepared disk was put into a drive and played back, and information was recorded and erased repeatedly, the same effect as in the previous example was obtained. In other words, the access time for recording/erasing/reproducing etc. was long, and frequently used information could be easily reproduced, making it highly functional as an optical recording system.

[Embodiment 5] This embodiment is a case where an initial recording section (ROM section) is provided in a write-once optical disk.

A write-once optical recording medium layer such as Pb're Se was formed on the disk substrate. In this, one of the patterns of Examples 1 to 3 was provided as a ROM section. In this case, the tOM section is protected from writing or erasure by providing software with a prohibition of rewriting to the ROM section, or by recording information designating a write-prohibited area on a part of the disk. Recording techniques for the ROM section include forming information pits at the same time as forming uneven guide grooves, and using part of the recording area as a disk management information area. When the disk prepared in this way was repeatedly recorded/played/erased by a drive, the same effect as in the previous example was obtained. In other words, the access time for recording/erasing/reproducing etc. could be shortened, and frequently used information could be easily reproduced, making the system as a whole highly functional. [Example 6] In this example, t! This is a case where an initial recording part (ROM part) is provided on a F-changed uJ function μf backlight disc by making the recording medium reverse.

Disks were manufactured using an organic compound film such as an I' b F e C o lh magneto-optical film, an In-S a - S b phase change film, or a subiropyran color cord as a recording medium.Initial stage As a method of forming the recording part,
Recording was performed with a laser power higher than the normal recording laser power to eliminate the OF inversion. When magneto-optical film was used, perpendicular magnetic anisotropy was eliminated by heating, and evaporation was used for phase change films and organic compound films. When the thus prepared disk was placed in a drive and repeated recording/playback operations, the same effect as in the previous example was obtained. That is, the access time for recording/erasing/reproducing etc. could be reduced by Ipi, and frequently used information etc. could be easily reproduced, and the system as a whole had high functionality.

〔Effect of the invention〕

According to the present invention, by providing a recording portion of an optical disc with a portion in which initial information is recorded in advance (ROM portion) and an unrecorded portion (an area where the user freely records), it is possible to easily input information manually. This enables high-speed access. Furthermore, by providing these two parts on the same track, information can be output manually without mechanical tracking, making it possible to shorten access time. In addition, there is no need to manually handle information that is rarely used, and it is possible to improve the functionality of the system.

[Brief explanation of the drawing]

FIGS. t to 3 are model diagrams showing the structure of a recording area of an optical disc according to an embodiment of the present invention. ) 1st mouth dream 2 mouth 3rd mouth

Claims (1)

[Scope of Claims] 1. In an optical disc on which recording, reproduction, or erasing is performed using a laser beam, a part where certain information is initially recorded and an unrecorded part are provided in the same disc, and the initially recorded part does not contain information. A recording/playback method for optical discs that is characterized by only reading. 2. A method for recording and reproducing an optical disc according to claim 1, characterized in that an initially recorded portion and an unrecorded portion are provided on the same track. 3. A method for recording and reproducing an optical disc according to claim 1, characterized in that an initially recorded portion and an unrecorded portion are provided for each sector. 4. In the method described in claim 1, recording of an optical disc characterized in that the initially recorded portion and the unrecorded portion are provided in the same sector, and more preferably, on the same track.・Regeneration method. 5. In the method described in claim 1, the write-once disc is provided with an initial recorded portion and an unrecorded portion so as to satisfy any of claims 2 to 4. A recording and playback method for optical discs. 6. In the method described in claim 1, the initial recording portion is formed on the disk substrate with uneven guide grooves, and at the same time information pits are formed so as to satisfy any one of claims 2 to 4. A method for recording and reproducing an optical disk, characterized in that a rewritable and reversible optical recording medium is formed after being formed. 7. In the method described in claim 1, the initial recording portion is formed on the disk substrate by forming uneven guide grooves and at the same time forming information pits so as to satisfy any one of claims 2 to 4. A method for recording and reproducing an optical disc, characterized in that a write-once optical recording medium is formed after forming the optical disc. 8. In the method described in claim 1, a rewritable and reversible optical recording medium or a write-once optical recording medium is formed as the optical recording medium, and claims 2 to 4 are satisfied. An optical disc recording/playback method characterized in that an initial recorded part and an unrecorded part are provided in the disc, and software is provided to prevent the initial recorded part from being erased or rewritten by a disc drive. 9. In the method described in claim 1, a rewritable reversible optical recording medium is formed as the optical recording medium, and the initial recording portion is formed on the medium by eliminating the reversibility of the medium. A recording and playback method for optical discs. 10. In the optical disc according to claim 1, a rewritable and reversible optical recording medium or a write-once optical recording medium is formed as the optical recording medium, and claims 2 to 4 are satisfied. An optical disk recording device characterized in that an initial recorded portion and an unrecorded portion are provided, and information specifying a write-prohibited area is recorded in the disk so that the initial recorded portion is not re-recorded by a disk drive. Method of reproduction. 11. In the method described in claim 10, the recording/reproducing method of an optical disc is characterized in that the information specifying the recording prohibited area is recorded by forming information pits at the time of manufacturing the substrate. method.