JPH08212708A - Information recording medium, information recording method and information recorder - Google Patents

Abstract

PURPOSE: To shorten the retrieving time of data by securing the continuity of data by imparting the recording characteristics suitable for continuous data to the continuous data, and imparting the recording characteristics suitable for random data to the random data. CONSTITUTION: On the same surface of a disk 10, a random data region 11 and a continuous data region 12 are provided. The random data region 11 is arranged on the inner circumferntial side of the disk, and the continuous data region 12 is arranged on the outer circumferential side of a disk. The random data region 11 comprises a rewritable random recording region 13 and a read-only random data region 14. The read-only random data region 14 is arranged on the inner circumferential side of the disk. The continuous data region 12 comprises a rewritable continuous data region 15 and a read-only continuous data region 16. The read-only continuous data region 16 is arranged on the outer circumferential side of the disk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc-shaped information recording medium such as a magneto-optical disc or a phase change type optical disc, an information recording method for recording information on the disc-shaped information recording medium, and the above information recording method. The present invention relates to an information recording device for carrying out.

[0002]

2. Description of the Related Art A conventional information recording medium is a recording medium suitable for recording continuous data such as a magnetic tape or a CD (compact disc) for recording temporally continuous information such as voice and images, and a computer. There is a recording medium suitable for recording random data, such as a floppy disk device or a fixed magnetic disk device (hereinafter referred to as a hard disk device: HDD) used as a peripheral device of a computer, and the recording format is continuous data recording. Alternatively, it is set in a state suitable for recording random data.

On the other hand, in recent years, the information processing ability of the computer environment has been improved, and voice and image information have been handled together with various data. Conventionally,
In an environment where such audio and image information is handled together with various data, that is, an environment called multimedia, a CD-ROM or a HDD has been often used as an information recording medium.

[0004]

However, an HDD suitable for recording continuous data such as voice and images as random data.
Although it is excellent in the information retrieval performance or the function of recovering from defects and data errors on the disk when recorded by using, the data that should be continuous should generally be accompanied by the replacement processing of the defective sector or by the operating system used. Discs are divided and scattered on the disc, the continuity of data is often not ensured, and audio, images, etc. may be interrupted during reproduction.

On the other hand, a CD-R suitable for recording continuous data
Although the OM maintains the continuity of data due to the structure of its format, it takes a long time to search various random data that should be treated as multimedia information at the same time. It is an object of the present invention to perform performances when recording random data on a recording medium suitable for recording continuous data as described above and when recording continuous data on a recording medium suitable for recording random data. Of data is ensured by giving a recording format suitable for continuous data to continuous data, and a recording format suitable for random data is provided for random data to shorten the data search time. Then
Moreover, it is an object of the present invention to provide an information recording medium, an information recording method, and an information recording device capable of simultaneously realizing these two types of data on the same recording medium.

[0006]

An information recording medium according to claim 1, wherein a random data recording area for recording random data and a continuous data recording area for recording continuous data are provided on the same surface of a disc. Characterize. Claim 1
According to the configuration described above, when the random data is recorded on the conventional recording medium suitable for recording the continuous data, and when the continuous data is recorded on the recording medium suitable for recording the random data, the deterioration of the respective performances occurs. Preventing and ensuring continuous data by giving a recording format suitable for continuous data to continuous data, shortening the data search time by giving a recording format suitable for random data to random data The above defect and data error recovery functions can be fully obtained, and these two types of data can be realized simultaneously on the same recording medium, making it ideal for a multimedia environment in which random data and continuous data are mixed. Is.

The information recording medium according to claim 2 is the information recording medium according to claim 1.
In the described information recording medium, ZCAV (Zoned Consta
nt Angular Velocity) type disk structure,
The random data recording area is arranged on the inner circumference side of the disk, and the continuous data recording area is arranged on the outer circumference side of the disk. According to the configuration of claim 2, ZC
In the case of an AV type disc, the data transmission rate is higher at the outer peripheral portion of the disc, so that the continuous data recording area for recording continuous data is capable of high-speed data transmission, and continuous data recording at a higher transmission rate is required. Immediate or continuous recording and reproduction can be ensured.

An information recording medium according to a third aspect is the second aspect.
In the information recording medium described above, the random data recording area is composed of a rewritable random data recording area and a read-only random data recording area, and the read-only random data recording area is arranged on the inner circumference side of the disc. According to the configuration of claim 3, the rewritable random data recording area arranged on the outer peripheral side is often recorded with information for retrieving information in the read-only random data recording area. It becomes possible to read out the search information, the read-only random data recording area is quickly accessed, and the random data such as computer data recorded in advance on the disc can be read out quickly. The system starts up faster.

The information recording medium according to claim 4 is the information recording medium according to claim 2.
The described information recording medium is characterized in that the continuous data recording area comprises a rewritable continuous data recording area and a reproduction-only continuous data recording area, and the reproduction-only continuous data recording area is arranged on the outer peripheral side of the disc. According to the configuration described in claim 4, the data transmission rate of the reproduction-only continuous data recording area is increased, and continuous data such as images and sounds recorded in advance on the disc can be read at high speed.

The information recording medium according to claim 5 is the information recording medium according to claim 1.
In the described information recording medium, the random data recording area is set to a logical format according to the logical specifications of the computer or host system used, and the continuous data recording area is set to a fixed logical format regardless of the logical specifications of the computer or host system. The feature is that it is set.

According to the fifth aspect of the present invention, it is possible to change the logical format of the continuous data recording area only by changing the logical format of the random data recording area for various computers and host systems having different operation systems. Since it is unnecessary, the same continuous data can be used to easily deploy to various computers and host systems.

An information recording medium according to claim 6 is the information recording medium according to claim 1.
The described information recording medium is characterized in that a format definition area for recording format definition information that defines the arrangement of the random data recording area and the continuous data recording area on the disk surface is provided at a predetermined position on the disk surface.
According to the configuration of claim 6, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the arrangement of the random data recording area and the continuous data recording area is changed by changing the format definition information. It will be possible.

An information recording medium according to claim 7 is the information recording medium according to claim 4.
The described information recording medium is characterized in that a format definition area for recording format definition information that defines the arrangement of the random data recording area and the continuous data recording area on the disk surface is provided at a predetermined position on the disk surface.
According to the configuration of claim 7, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the arrangement of the random data recording area and the continuous data recording area is changed by changing the format definition information. It will be possible.

An information recording medium according to claim 8 is the information recording medium according to claim 5.
The described information recording medium is characterized in that a format definition area for recording format definition information that defines the arrangement of the random data recording area and the continuous data recording area on the disk surface is provided at a predetermined position on the disk surface.
According to the configuration of claim 8, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the arrangement of the random data recording area and the continuous data recording area is changed by changing the format definition information. It will be possible.

An information recording medium according to a ninth aspect is the information recording medium according to the sixth, seventh or eighth aspect, wherein at least a predetermined position on the disc surface where the format defining area is provided is located at the outermost circumference and the innermost circumference of the disc surface. It is characterized by being one. According to the configuration of claim 9, since the format definition area is arranged on at least one of the outermost circumference and the innermost circumference of the disc, the format definition information required at the time of starting the disc can be quickly detected, and the format definition information and Since continuous data and random data do not coexist, data recording / reading processing can be simplified.

An information recording medium according to a tenth aspect is the information recording medium according to the first aspect, wherein the disc has a structure in which consecutive addresses are recorded from an outer peripheral portion of the disc toward an inner peripheral portion thereof, and the random data recording area is continuous. The data recording area has the same physical address, sector structure, and physical format, and is characterized by being divided into a random data recording area and a continuous data recording area by a logical format process performed at the start of use of the disc.

According to a tenth aspect of the present invention, a logical format process is performed at the start of use of the disc so that the disc is divided into a random data recording region and a continuous data recording region, and one disc surface is arbitrarily set as the random data recording region. It can be divided into continuous data recording areas, and various areas can be divided by changing only the logical format process for the same type of disk.

According to an eleventh aspect of the present invention, in the information recording medium according to the first aspect, the rewritable random data recording area of the random data recording area has an alternative area in an area different from the user data area. The read-only random data recording area of the continuous data recording area and the random data recording area is provided with a parity sector at a position immediately after the constant sector.

According to the structure of the eleventh aspect, in the rewritable random data recording area, a defective sector is detected during recording or by a verify operation, and is arranged at a position separated from the defective sector with respect to the detected defective sector. Performs defect replacement processing that performs sector replacement using a replacement sector, and for continuous data recording areas and read-only random data recording areas, parity sectors are arranged immediately after the defective sectors at regular intervals on the disk. By performing the defect repairing process used at the time of reproducing the disc, the reliability of the data is secured for the random data and the continuity of the data is secured for the continuous data.

An information recording medium according to a twelfth aspect is the information recording medium according to the eleventh aspect, wherein the random data recording area is set to a logical format according to the logical specifications of a computer or a host system to be used, and the continuous data recording area is set. Is characterized by being set to a certain logical format regardless of the logical specifications of the computer or host system.

According to the structure of claim 12, claim 1
In addition to the effect of 1, the change of the logical format of the random data recording area is not necessary for various computers and host systems having different operation systems, and the change of the logical format of the continuous data recording area is unnecessary. Using continuous data makes it easy to deploy to various computers and host systems.

An information recording medium according to a thirteenth aspect is the information recording medium according to the twelfth aspect, wherein a format definition area for recording format definition information defining an arrangement of a random data recording area and a continuous data recording area on a disc surface is recorded. Is provided at a predetermined position on the disk surface. According to the configuration of claim 13, in addition to the operation of claim 12, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information,
The layout of the random data recording area and the continuous data recording area can be changed by changing the format definition information.

According to a fourteenth aspect of the present invention, in the information recording medium according to the thirteenth aspect, the predetermined position on the disc surface where the format defining area is provided is at least one of the outermost circumference and the innermost circumference of the disc surface. Is characterized by. According to the configuration of claim 14, in addition to the operation of claim 13, the format definition area is arranged at least at one of the outermost circumference and the innermost circumference of the disc, so that the format definition information required at the time of starting the disc can be promptly provided. The data can be detected and the format definition information and the continuous data and random data do not coexist, and the data recording / reading process can be simplified.

An information recording medium according to a fifteenth aspect is the information recording medium according to the fourteenth aspect, wherein the random data recording area is arranged on the inner side of the disc and the continuous data recording area is arranged on the outer side of the disc. And
According to the configuration of claim 15, in addition to the operation of claim 14, the continuous data is fixed to the outer circumference of the disc and the recording position is fixed to the random data on the inner circumference, so that the handling can be facilitated when viewed from the host computer. .

An information recording medium according to a sixteenth aspect is the information recording medium according to the fifteenth aspect, wherein the random data recording area comprises a rewritable random data recording area and a read-only random data recording area. The region is arranged on the inner circumference side of the disc. According to the configuration of claim 16, in addition to the operation of claim 15, since the reproduction-only random data is not arranged between the random data and the continuous data, the area of the random data and the continuous data is allocated. Can be freely decided,
It is possible to use the disk efficiently according to the purpose.

An information recording medium according to a seventeenth aspect is the information recording medium according to the fifteenth aspect, wherein the continuous data recording area comprises a rewritable continuous data recording area and a read-only continuous data recording area. The area is arranged on the outer peripheral side of the disk. According to the configuration of claim 17, in addition to the operation of claim 15, since the reproduction-only continuous data is not arranged between the random data and the continuous data, the distribution of the areas of the random data and the continuous data is performed. Can be freely determined, and the disk can be efficiently used according to the purpose.

An information recording medium according to an eighteenth aspect is the information recording medium according to the fifteenth aspect, wherein the disc has a structure in which continuous addresses are recorded from an outer peripheral portion of the disc toward an inner peripheral portion thereof, and the address is continuous with the random data recording area. The data recording area has the same physical address, sector structure, and physical format, and is characterized by being divided into a random data recording area and a continuous data recording area by a logical format process performed at the start of use of the disc.

According to the structure of claim 18, claim 1
In addition to the function of 5, the disk is divided into a random data recording area and a continuous data recording area by performing a logical format process at the start of use of the disk, and one disk surface is arbitrarily divided into a random data recording area and a continuous data recording area. It is possible to cope with various area divisions by changing only the logical format processing for the same type of disk.

An information recording medium according to a nineteenth aspect is the information recording medium according to the fifteenth, sixteenth, seventeenth or eighteenth aspects, wherein a ZCAV type disc structure is adopted. According to the configuration of claim 19, claim 15,
By adopting the ZCAV disc in addition to the effect of 16, 17 or 18, the data transmission rate is higher in the outer peripheral portion of the disc than in the discs of other systems, so that a continuous data recording area for recording continuous data is provided. High-speed data transmission is possible, and the immediateness or continuity of continuous data recording / reproduction, which requires a higher transmission rate, can be secured, and the rewritable random data recording area located on the outer peripheral side is exclusively for reproduction. Information for searching information in the random data recording area is often recorded,
It becomes possible to read the search information at a higher speed, the read-only random data recording area is quickly accessed, and random data such as computer data recorded in advance on the disc is quickly read.

An information recording medium according to a twentieth aspect is the information recording medium according to the fourteenth aspect, wherein the random data recording area is arranged on the outer peripheral side of the disk and the continuous data recording area is arranged on the inner peripheral side of the disk. And
According to the structure of claim 20, in addition to the operation of claim 14, the continuous data is fixed to the inner circumference of the disk and the recording position is fixed to the random data on the outer circumference, so that it can be easily handled when viewed from the host computer. .

An information recording medium according to a twenty-first aspect is the information recording medium according to the twentieth aspect, wherein the random data recording area comprises a rewritable random data recording area and a read-only random data recording area. The area is arranged on the outer peripheral side of the disk. According to the configuration of claim 21, in addition to the operation of claim 20, since the read-only random data is not arranged between the random data and the continuous data, the allocation of the areas of the random data and the continuous data is performed. Can be freely decided,
It is possible to use the disk efficiently according to the purpose.

An information recording medium according to a twenty-second aspect is the information recording medium according to the twenty-first aspect, wherein the continuous data recording area comprises a rewritable continuous data recording area and a read-only continuous data recording area. The region is arranged on the inner circumference side of the disc. According to the configuration of claim 22, in addition to the operation of claim 20, since the reproduction-only continuous data is not arranged between the random data and the continuous data, the distribution of the areas of the random data and the continuous data Can be freely determined, and the disk can be efficiently used according to the purpose.

According to a twenty-third aspect of the invention, there is provided the information recording medium according to the twenty-first aspect, wherein the disc has a structure in which consecutive addresses are recorded from the inner peripheral portion of the disc toward the outer peripheral portion thereof, and the address is continuous with the random data recording area. The data recording area has the same physical address, sector structure, and physical format, and is characterized by being divided into a random data recording area and a continuous data recording area by a logical format process performed at the start of use of the disc.

According to the configuration of claim 23, claim 2
In addition to the effect of 0, by performing a logical format process at the start of use of the disc, it is divided into a random data recording area and a continuous data recording area, and one disc surface is arbitrarily divided into a random data recording area and a continuous data recording area. It is possible to cope with various area divisions by changing only the logical format processing for the same type of disk.

An information recording medium according to a twenty-fourth aspect is the information recording medium according to the twentieth, twenty-first, twenty-second, or twenty-third aspect, wherein a ZCAV type disc structure is adopted. According to the configuration of claim 24,
In addition to the action of 21, 22, or 23, by adopting the ZCAV type disc, the data transmission rate of the disc outer peripheral portion becomes higher than that of other type discs, so that when continuous data is audio information, This is advantageous when the high speed requirement of random data is higher than the high speed requirement of continuous data.

The information recording method according to the twenty-fifth aspect is characterized in that random data and continuous data are recorded on the same surface of the disc in different recording areas. According to the method of claim 25, the random data has a recording format suitable for the random data, so that the information retrieval performance or the function of recovering from a defect or data error on the disk can be sufficiently obtained. The recording format suitable for the data ensures the continuity of the data.

According to a twenty-sixth aspect of the present invention, in the information recording method according to the twenty-fifth aspect, a ZCAV type disc is used, random data is recorded on the inner side of the disc, and continuous data is recorded on the outer side of the disc. It is characterized by According to the method of claim 26, since it is a ZCAV type disc, high-speed data transmission is possible on the outer peripheral side of the disc for recording continuous data, so that the immediateness or continuity of recording / reproducing of continuous data can be ensured. It will be easy.

The information recording method according to claim 27 is the information recording method according to claim 25, wherein the random data is recorded in a logical format according to the logical specifications of the computer or host system used, and the continuous data is recorded in the computer or host. It is characterized by recording in a fixed logical format regardless of the logical specifications of the system. According to the method of claim 27, it is only necessary to change the logical format of the random data recording area for various computers and host systems having different operation systems, and it is not necessary to change the logical format of the continuous data recording area. Therefore, the same continuous data can be used to easily deploy to various computers and host systems.

An information recording method according to a twenty-eighth aspect is the information recording method according to the twenty-fifth aspect, wherein format definition information for defining the arrangement of the random data recording area and the continuous data recording area on the disc surface is predetermined. It is characterized by recording at the position. According to the method of claim 28, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the arrangement of the random data recording area and the continuous data recording area is changed by changing the format definition information. it can.

The information recording method according to claim 29 is the information recording method according to claim 28, wherein the predetermined position on the disk surface for recording the format definition information is at least one of the outermost circumference and the innermost circumference of the disk surface. It is characterized by According to the method described in claim 29, the format definition information required at the time of starting the disc can be quickly detected, and the format definition information and the continuous data and the random data are not mixed, and the data recording / reading process can be simplified. .

An information recording method according to a thirtieth aspect is the information recording method according to the twenty-fifth aspect, wherein the rewritable random data recording area of the random data recording area is a defective sector during recording or by a verify operation. Detected defective sector is subjected to defect replacement processing by performing sector replacement using a replacement sector arranged at a position distant from the defective sector, and read-only random data in continuous data recording area and random data recording area The recording area is characterized in that the defective sector is subjected to a defect repair process using a parity sector arranged immediately after the fixed sector on the disc when the disc is reproduced.

According to the method of claim 30, the reliability of the data is secured for the random data and the continuity of the data is secured for the continuous data. The information recording method according to claim 31 is the information recording method according to claim 30, wherein the random data is recorded in a logical format according to the logical specifications of the computer or host system used, and the continuous data is the logic of the computer or host system. It is characterized by recording in a fixed logical format regardless of specifications.

According to the method of claim 31, claim 3
In addition to the effect of 0, it is not necessary to change the logical format of the random data recording area for various computers or host systems having different operation systems, and it is not necessary to change the logical format of the continuous data recording area. Using continuous data makes it easy to deploy to various computers and host systems.

The information recording method according to a thirty-second aspect is the information recording method according to the thirty-first aspect, wherein format definition information for defining the arrangement of the random data recording area and the continuous data recording area on the disc surface is predetermined. It is characterized by recording at the position. According to the method of claim 32, in addition to the operation of claim 31, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the random data recording area is changed by changing the format definition information. The arrangement of the continuous data recording area can be changed.

The information recording method according to a thirty-third aspect is the information recording method according to the thirty-second aspect, wherein the predetermined position on the disc surface for recording the format definition information is at least one of the outermost circumference and the innermost circumference of the disc surface. It is characterized by According to the method of claim 33, in addition to the effect of claim 32, the format definition area is arranged at least at one of the outermost circumference and the innermost circumference of the disc, so that the format definition information required at the time of starting the disc can be promptly provided. The data can be detected and the format definition information does not coexist with the continuous data and the random data, so that the data recording / reading process can be simplified.

An information recording method according to a thirty-fourth aspect is the information recording method according to the thirty-third aspect, wherein random data is recorded on the inner circumference side of the disc and continuous data is recorded on the outer circumference side of the disc. According to the method of claim 34, in addition to the effect of claim 33, the continuous data is fixed to the outer circumference of the disk and the recording position is fixed to the random data on the inner circumference. .

An information recording method according to a thirty-fifth aspect is the information recording method according to the thirty-fourth aspect, wherein a ZCAV type disc is used. According to the method of claim 35, in addition to the operation of claim 34, by adopting the ZCAV type disc, the data transmission rate is higher in the outer peripheral portion of the disc as compared with the discs of other types. The continuous data recording area for recording data can be transmitted at high speed, and the immediateness or continuity of recording and reproduction of continuous data, which requires a higher transmission rate, can be secured, and the rewritable random type is arranged on the outer circumference side. In the data recording area, information for searching information in the read-only random data recording area is often recorded,
It becomes possible to read the search information at a higher speed, the read-only random data recording area is quickly accessed, and random data such as computer data recorded in advance on the disc is quickly read.

An information recording method according to a thirty-sixth aspect is characterized in that, in the information recording method according to the thirty-third aspect, random data is recorded on the outer peripheral side of the disc and continuous data is recorded on the inner peripheral side of the disc. According to the method described in claim 36, in addition to the effect of claim 33, the continuous data is fixed to the outer circumference of the disk and the recording position is fixed to the random data on the inner circumference, so that it can be easily handled when viewed from the host computer. .

According to a thirty-seventh aspect of the present invention, there is provided an information recording method according to the thirty-sixth aspect, wherein a ZCAV type disc is used. According to the method of claim 37, in addition to the effect of claim 36, by adopting the ZCAV type disc, the data transmission rate becomes higher in the outer peripheral portion of the disc as compared with the discs of other types, so continuous data In the case of voice information or the like, it is advantageous when the high speed requirement of random data is higher than the high speed requirement of continuous data. 39. The information recording apparatus according to claim 38, wherein a disc insertion detecting means for detecting insertion of a disc into the optical disc device, a disc start-up processing means for performing disc start-up processing in response to an output of the disc insertion detecting means, and a disc. Format definition information reproducing means for reproducing the format definition area information, read / write command detecting means for detecting the read / write command, and addresses and disks included in the read / write command detected by the read / write command detecting means. Read / write area determination means for determining whether the read / write area is a rewritable random data area or other data area based on the format definition area information, and the read / write area is rewritten based on the output of the read / write area determination means. Error due to alternative sector processing when type random data area Error sector processing means for performing the error processing by the parity sector when the read / write area is other than the read / write area, and disk discharging means for detecting the disk discharging command and discharging the disk from the optical disk device. I have it.

According to the structure of claim 38, the lead /
When the write area is a rewritable random data area, error sector processing is performed by alternative sector processing, and read / write
When the write area is any other area, error sector processing is performed by the parity sector, and both the reliability of random data and the high speed of continuous data can be achieved.

This prevents the deterioration of the performance that appears when recording random data on a conventional recording medium suitable for recording continuous data and when recording continuous data on a recording medium suitable for recording random data. By providing a recording format suitable for continuous data to continuous data, the continuity of data is secured, and by providing a recording format suitable for random data, the search time of data is shortened, and these 2 It is possible to realize different kinds of data on the same recording medium at the same time, which is suitable for a multimedia environment in which random data and continuous data are mixed.

[0052]

BEST MODE FOR CARRYING OUT THE INVENTION An information recording medium according to a first embodiment of the present invention will be described with reference to FIGS. 1, 2, 3 and 5. FIG. 1 is a diagram schematically showing information arrangement in a radial direction on a disc such as a magneto-optical disc or a phase change type optical disc driven by a zoned constant angular velocity (ZCAV) system according to the first embodiment. The lower side is the inner side of the disc and the upper side is the outer side of the disc. The ZCAV system has a format in which the disk is rotated at a constant rotation speed, the disk is divided into a plurality of zones in the radial direction, and the same number of sectors is in the same zone, and the number of sectors is larger in the outer peripheral zone. With such a configuration, the recording density can be made substantially constant over the entire disc.

FIG. 5 is a schematic view of a ZCAV type disc. A disc 101 has a central hole 102 for mounting and rotating the disc in a device, and a recording area (for recording information by a user) around the central hole 102. Z1 to Z4). In this recording area, fine tracks (not shown) for recording information spirally or concentrically at a pitch of about 1 μm are provided, and addresses 103, 104 etc. indicating the position and angle of this track are provided respectively. Pre-recorded in the form of intermittent tracks. In the figure, this recording area is divided into four zones Z1 to Z4 in the radial direction, and the sector lengths 105 of the entire disc are made substantially the same. The information to be recorded is recorded in each sector as a pit string having an optical change by a method such as laser intensity modulation. In the figure, the number of zones is 4 and the number of sectors is 12 to 18, but many have more zones and sectors.

This information recording medium, as shown in FIG.
A random data recording area 11 for recording random data such as computer data for which random access performance is important, and continuous data for which immediateness or continuity such as image and sound is required are provided on the same surface of the disk 10. A continuous data recording area 12 for recording is logically provided.

The random data recording area 11 is arranged on the inner circumference side of the disk, and the continuous data recording area 12 is arranged on the outer circumference side of the disk. In addition, continuous data recording area 1
Although 2 is arranged on the outer circumference side of the disk, generally, higher speed data transfer is required than the case of random data depending on the type of continuous data, and in the case of the disk 10 driven by the ZCAV method, the outer circumference side is faster. This is because the data transfer is performed in.

The random data recording area 11 is composed of a rewritable random data recording area 13 and a read-only random data recording area 14 recorded by pre-pits, and the read-only random data recording area 14 is arranged on the inner circumference side of the disc. . The continuous data recording area 12 is composed of a rewritable continuous data recording area 15 and a reproduction-only continuous data recording area 16 recorded in pre-pits, and the reproduction-only continuous data recording area 16 is arranged on the outer peripheral side of the disc.

In the first embodiment, the ZCAV type disc requires a higher transmission rate, paying attention to the characteristic that the transmission rate becomes faster because the recording / reproducing clock frequency becomes higher in the outer peripheral zone. It is characterized in that the data is arranged in the area on the outer peripheral side. Therefore, the above-mentioned area arrangement is an example, and the area to be arranged may be determined by judging the contents to be recorded.

The boundaries between the recording areas 13 to 16 are as follows.
When setting in the logical format, it can be arranged at a physical zone boundary of the ZCAV disc 10, for example. The random data recording area 11 is set to a logical format according to the logical specifications of the computer or host system to be used, and the continuous data recording area 12 is set to a constant logical format (for example, CD-ROM) regardless of the logical specifications of the computer or host system. Logical format).

Further, at predetermined positions on the same surface of the disk 10, for example, the innermost circumference of the disk and the outermost circumference of the disk,
Random data recording area 11 and continuous data recording area 12
There are provided logical format definition areas 17 and 18 for recording the logical format definition information that defines the arrangement on the disk surface. The logical format definition area may be collectively provided on either the innermost disc or the outermost disc.

In addition to the logical format of the disk 10 described above, the logical format definition areas (also referred to as disk management areas) 17, 18 include defective sector management information, track information in the continuous data recording area 12, and the like. Will be recorded. That is, the logical format definition areas 17 and 18 are divided into a disk structure management sector, a defect list management sector, an initial defect list, a secondary defect list, track information, and the like.

The disk 10 has a structure in which continuous addresses are recorded from the outer circumference of the disk toward the inner circumference of the disk. The random data recording area 11 and the continuous data recording area 12 have the same physical address and sector structure. And the physical format, and there is no physical distinction between the random data recording area 11 and the continuous data recording area 12, and the random data recording area 11 and the continuous data recording area 12 are processed by the logical format processing performed at the start of use of the disc. Will be divided. The division position of the random data recording area 11 and the continuous data recording area 12 is ZCA.
It can be arbitrarily determined by a logical format process based on the physical zone boundary of the V-type disk 10.

In the actual optical disc, this configuration can be applied to both track types of spiral track and concentric circle track, and the spiral direction is from the inner circumference to the outer circumference and the direction from the outer circumference to the inner circumference. It can be adapted to both those that go to. Therefore,
The disk 10 has been described as a configuration in which continuous addresses are recorded from the outer peripheral portion of the disk toward the inner periphery of the disk, but the disk 10 has a configuration in which consecutive addresses are recorded from the inner peripheral portion of the disk toward the outer periphery of the disk. Also has exactly the same effect.

Further, the rewritable random data recording area 13 in the random data recording area 11 is divided in units of physical zones of the disk 10, and within one physical zone, as shown in FIG. Data area 13
a and an alternative area 13b composed of a large number of alternative sectors. The alternative area 13b is provided at a position separated from the user data area 13a. In FIG. 2, the alternative area 13b
Are arranged on the inner circumference of the user data area 13a, but the arrangement can be reversed, and the alternative area 13b is divided into two and arranged adjacent to the inner circumference and the outer circumference of the user data area 13a. It is also possible.

Similarly, a read-only random data recording area 1
Similarly, 4 is divided in units of physical zones of the disk 10, and is divided into a user data area 14a composed of a large number of sectors and a parity sector area 14b composed of a large number of parity sectors in one physical zone as shown in FIG. It
The parity sector area 14b is the user data area 14a.
It is provided at a position separated from. In FIG. 3, the parity sector area 14b is arranged on the inner circumference of the user data area 14a, but the arrangement can be reversed, and the parity sector area 14b is divided into two to divide the inner circumference of the user data area 14a. It is also possible to arrange it adjacent to the outer circumference.

The continuous data recording area 12 is an area for recording / reproducing data which emphasizes continuous recording / reproduction of images and sounds at a constant transfer rate. Therefore, in this continuous data recording area 12, a defect replacement process during data recording unlike the rewritable random data recording area 13 is not performed, but instead of this, a parity is recorded at a position immediately after every certain sector during data recording. Configuration with sectors, eg 2
A parity sector is added to every 5 sectors, and if there is a defect in 1 sector out of 25 sectors, the structure is recoverable. This parity sector is read during data playback,
If there is a sector in the corresponding 25 sectors that cannot be corrected by the error correction function within the sector, this parity sector can be used to repair the defect in one sector.

The number of the fixed sectors may be determined according to the defect occurrence rate of the medium, the transfer rate required by the recorded information, and the defect tolerance of continuous data. When the content confirmation is sufficient, the defect tolerance is high, and therefore a parity sector may be provided at a ratio of 1 sector to 50 sectors. In the case of audio information having a relatively low transfer rate, sound quality-oriented recording is realized 10
It is possible to provide a parity sector at a rate of one sector for each sector.

The parity sector ratio may be set for each medium, or may be set for each information recorded in the same medium. The parity sector ratio can be realized by recording the type of program, the address, and the parity sector number determination information in combination in the logical format definition areas 17 and 18 of FIG.

The read-only random data recording area 14 is also
As in the case of the continuous data recording area 12, for example, one parity sector may be added to every 25 sectors and the parity sectors may be dispersedly arranged on the disk 10 without collecting a plurality of parity sectors. In addition, in FIG. 1 above,
The disk 10 has a rewritable random data storage area 13, a read-only random data storage area 14, a rewritable continuous data storage area 15 and a read-only continuous data storage area 16, all of which are described above. It is not necessary for all of the storage areas to exist on the disk 10, and any one or two or more may exist.

According to the information recording medium of this embodiment,
Since the random data recording area 11 for recording the random data and the continuous data recording area 12 for recording the continuous data are provided on the same surface of the disk 10, the random data is recorded on the recording medium suitable for the conventional recording of continuous data. In case of recording continuous data on a recording medium suitable for recording random data, performance deterioration is prevented, and continuous data is secured by providing a recording format suitable for continuous data. However, by giving a recording format suitable for the random data to the random data, the data search time can be shortened, and these two types of data can be realized simultaneously on the same disk 10. Best suited for mixed multimedia environments.

Further, since the ZCAV type disk 10 is used and the continuous data recording area 12 is arranged on the outer peripheral side of the disk 10 capable of high-speed data transmission, immediate recording / reproduction of continuous data requiring a higher transmission rate is performed. It becomes easy to secure the continuity or continuity. Further, when the random data recording area 11 is composed of the rewritable random data recording area 13 and the read-only random data recording area 14, the read-only random data recording area 14 is provided on the inner circumference side of the disc and the rewritable random data recording area 13 is provided. A rewritable random data recording area in which information for searching the information recorded in the read-only random data recording area 14 and information for activating the connected computer host system are recorded because it is arranged on the outer peripheral side of the disk. The data of 13 can be read out faster, and the start-up of the computer or host system can be accelerated.

Further, the continuous data recording area 12 is a rewritable continuous data recording area 15 and a read-only continuous data recording area 1
6 is a reproduction-only continuous data recording area 16
Since the disk is arranged on the outer peripheral side of the disk, the data transmission rate of the reproduction-only continuous data recording area 16 is increased, and continuous data such as images and sounds recorded in the disk 10 in advance can be quickly read.

The random data recording area 11 is set to a logical format according to the logical specifications of the computer or host system used, and the continuous data recording area 1
Since No. 2 is set to a constant logical format regardless of the logical specifications of the computer or host system, it is possible to continuously change the logical format of the random data recording area 11 for various computers and host systems with different operation systems. Data recording area 12
Since it is not necessary to change the logical format of, the same continuous data can be used to easily deploy to various computers and host systems.

Since the format definition areas 17 and 18 for recording the format definition information are provided on the disc surface, the arrangement of the random data recording area 11 and the continuous data recording area 12 can be arbitrarily set by the format definition information. The arrangement of the random data recording area 11 and the continuous data recording area 12 can be changed by changing the format definition information.

Further, since the format definition areas 17 and 18 are arranged on at least one of the outermost circumference and the innermost circumference of the disc 10, the format definition information required at the time of starting the disc can be promptly detected and can be continuous with the format definition information. Since data and random data do not coexist, the data recording / reading process can be simplified. Further, the disk 10 has a structure in which continuous addresses are recorded from the outer peripheral portion of the disk toward the inner peripheral portion, and the random data recording area 11 and the continuous data recording area 12 have the same physical address, sector structure, and physical format. Since the random data recording area 11 and the continuous data recording area 12 are divided by the logical formatting process performed at the start of use of the disk, one disk surface can be arbitrarily divided into the random data recording area 11 and the continuous data recording area 12. , The same type of disk 10 can be used in various area divisions by changing only the logical format processing.

The rewritable random data recording area 13
Provides an alternative area in an area different from the user data area,
Since the continuous data recording area 12 and the read-only random data recording area 14 are provided with parity sectors at fixed intervals, the rewritable random data recording area 13 is
A defective sector is detected during recording or by a verify operation, and defect replacement processing is performed to replace the detected defective sector with a replacement sector located at a position distant from the defective sector. Regarding the dedicated random data recording area 14, the random data is recorded in the defective sector by performing a defect repair process using a parity sector arranged immediately after the fixed sector on the disc 10 at the time of reproducing the disc. The reliability can be ensured, and the continuous data can ensure data continuity.

Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 9. FIG. 6 corresponds to FIG. 1 of the first embodiment, and schematically shows information arrangement in the radial direction on a disk such as a magneto-optical disk or a phase change optical disk driven by the ZCAV method. The lower side is the inner side of the disc and the upper side is the outer side of the disc.

This information recording medium, as shown in FIG.
A random data recording area 111 for recording random data such as computer data, which is important for random access performance, and continuous data such as images and sounds, which require immediateness or continuity, are provided on the same surface of the disk 110. A continuous data recording area 112 for recording is logically provided. The difference from the first embodiment is that the arrangement of the inner and outer circumferences is reversed.

The random data recording area 111 is arranged on the outer peripheral side of the disk, and the continuous data recording area 112 is arranged on the inner peripheral side of the disk. Note that the random data recording area 111 is arranged on the outer peripheral side of the disc in the case of this embodiment, because the random data is a combination such that audio information is used as continuous data and computer graphic image information is used as random data. This is the case where the high speed performance of ZCA is more important than the high speed performance of continuous data.
This is because, in the case of the disk 110 driven by the V method, data transfer is performed at a higher speed on the outer peripheral side.

The random data recording area 111 is composed of a rewritable random data recording area 113 and a read-only random data recording area 114 recorded in pre-pits, and the read-only random data recording area 114 is arranged on the outer peripheral side of the disc. The continuous data recording area 112 is composed of a rewritable continuous data recording area 115 and a reproduction-only continuous data recording area 116 recorded in pre-pits, and the reproduction-only continuous data recording area 116 is arranged on the inner circumference side of the disc.

The boundaries between the recording areas 113 to 116 described above are, for example, ZCAV when set in the logical format.
System 110 can be located at the physical zone boundaries. The random data recording area 111 is set to a logical format according to the logical specifications of the computer or host system used, and the continuous data recording area 11
2 is set to a certain logical format (for example, CD-ROM logical format) regardless of the logical specifications of the computer or the host system.

Further, at a predetermined position on the same surface of the disk 110, for example, the innermost circumference of the disk, logical format definition information for defining the arrangement of the random data recording area 111 and the continuous data recording area 112 on the disk surface is recorded. A logical format definition area 117 is provided. In addition,
The logical format definition area may be provided at both the innermost circumference of the disc and the outermost circumference of the disc as in the first embodiment.

The logical format definition area (also referred to as a disk management area) 117, the disk 110 described above.
In addition to this logical format, defective sector management information and track information in the continuous data recording area 112 are also recorded. That is, the logical format definition area 117 is divided into a disk structure management sector, a defect list management sector, an initial defect list, a secondary defect list, track information, and the like.

The disk 110 has a structure in which continuous addresses are recorded from the inner circumference of the disk toward the outer circumference of the disk, and the random data recording area 111 and the continuous data recording area 112 have the same physical address and sector structure. And a physical format, and physically has a random data recording area 111 and a continuous data recording area 11
No distinction is made between the two and the random data recording area 111
And the continuous data recording area 112 is divided. The division position of the random data recording area 111 and the continuous data recording area 112 can be arbitrarily determined by a logical format process with reference to the physical zone boundary of the ZCAV type disk 110.

In the actual optical disc, this configuration can be applied to both track types of spiral track and concentric circle track, and the spiral direction is from the inner circumference to the outer circumference and the direction from the outer circumference to the inner circumference. It can be adapted to both those that go to. Therefore,
The disk 110 has been described as a configuration in which continuous addresses are recorded from the inner peripheral portion of the disk toward the outer periphery of the disk, but the disk 110 has a configuration in which consecutive addresses are recorded from the outer peripheral portion of the disk toward the inner periphery of the disk. Also has exactly the same effect.

The rewritable random data recording area 113 in the random data recording area 111 is a disc 1
As shown in FIG. 7, each physical zone is divided in units of 10 physical zones, and as shown in FIG.
and b. The alternative area 113b is provided at a position separated from the user data area 113a. In FIG. 7, the alternative area 113b is arranged on the outer circumference of the user data area 113a, but the arrangement can be reversed. Further, the alternative area 113b is divided into two parts, the inner circumference and the outer circumference of the user data area 113a. It is also possible to arrange them adjacently.

Similarly, a read-only random data recording area 1
Similarly, 14 is divided in units of physical zones of the disk 110, and within one physical zone, as shown in FIG. It The parity sector area 114b is provided at a position separated from the user data area 114a. In FIG. 8, the parity sector area 114b is the user data area 114.
Although it is arranged on the outer periphery of a, the arrangement can be reversed, and the parity sector area 114b
It is also possible to divide it into two and arrange them adjacent to the inner and outer circumferences of the user data area 114a.

The continuous data recording area 112 is an area for recording / reproducing data which emphasizes continuous recording / reproduction at a constant transfer rate of images and sounds. for that reason,
In the continuous data recording area 112, the defect replacement process during data recording unlike the rewritable random data recording area 113 is not performed. Instead of this, a parity sector is recorded at a position immediately after that at a constant sector during data recording. The configuration provided, for example, a parity sector is added for every 25 sectors, and if 25 sectors have a defect of one sector, the configuration is recoverable. This parity sector is read during data reproduction, and if there is a sector in the corresponding 25 sectors that cannot be corrected by the error correction function in the sector, this parity sector is used to repair the defect of one sector. You can

The number of the fixed sectors may be determined according to the defect occurrence rate of the medium, the transfer rate required for the recorded information, and the defect tolerance of continuous data. When the content confirmation is sufficient, the defect tolerance is high, and therefore a parity sector may be provided at a ratio of 1 sector to 50 sectors. In the case of audio information having a relatively low transfer rate, sound quality-oriented recording is realized 10
It is possible to provide a parity sector at a rate of one sector for each sector.

The parity sector ratio may be set for each medium or for each information recorded in the same medium. The parity sector ratio can be realized by recording the type of program, address, and parity sector number determination information in combination in the logical format definition area 117 of FIG.

Read-only random data recording area 114
Also, without collecting a plurality of parity sectors, it is possible to add one parity sector for every 25 sectors and disperse the parity sectors on the disk 10 in the same manner as the continuous data recording area 112. Note that FIG.
Shows that the disk 110 has all of the rewritable random data storage area 113, the reproduction-only random data storage area 114, the rewritable continuous data storage area 115, and the reproduction-only continuous data storage area 116. It is not necessary for all four storage areas to exist on the disk 110, and any one or two or more may exist.

According to the information recording medium of this embodiment,
Since the random data recording area 111 for recording random data and the continuous data recording area 112 for recording continuous data are provided on the same surface of the disk 110, the random data is recorded on a recording medium suitable for recording conventional continuous data. In case of recording continuous data on a recording medium suitable for recording random data, performance deterioration is prevented, and continuous data is secured by providing a recording format suitable for continuous data. However, by giving a recording format suitable for the random data to the random data, the data search time can be shortened, and these two types of data can be realized simultaneously on the same disk 110. Best suited for mixed multimedia environments.

Further, since the ZCAV type disk 110 is used and the random data recording area 111 is arranged on the outer peripheral side of the disk 110 capable of high-speed data transmission, recording / reproducing in the case of random data requiring a higher transmission rate. It is easy to realize high speed. Further, when the random data recording area 111 is composed of the rewritable random data recording area 113 and the read-only random data recording area 114, the read-only random data recording area 114
Is the rewritable random data recording area 11 on the outer peripheral side of the disc.
Since 3 is arranged on the inner circumference side of the disc, the rewritable random data recording area 113 and the rewritable continuous data recording area 11
Since there is no reproduction-only random data 114 whose recorded contents cannot be changed during 5, the area distribution of each area can be freely decided, and the disk can be used according to the convenience of the user, so that the disk can be more effectively and efficiently used. It is possible to use. For the same reason, continuous data recording area 1
When 12 comprises a rewritable continuous data recording area 115 and a reproduction-only continuous data recording area 116, the reproduction-only continuous data recording area 116 is arranged on the inner circumference side of the disc.

The random data recording area 111 is set to a logical format according to the logical specifications of the computer or host system used, and the continuous data recording area 112 is set to a fixed logical format regardless of the logical specifications of the computer or host system. Since the setting is made, it is only necessary to change the logical format of the random data recording area 111 for various computers and host systems having different operation systems, and it is not necessary to change the logical format of the continuous data recording area 112.
Using the same continuous data makes it easy to deploy to various computers and host systems.

Since the format definition area 117 for recording the format definition information is provided on the disc surface,
Random data recording area 111 and continuous data recording area 1
The arrangement of 12 can be arbitrarily set by the format definition information, and the random data recording area 111 and the continuous data recording area 112 can be changed by changing the format definition information.
You can change the placement of.

Further, since the format definition area 117 is arranged at the innermost circumference of the disk 110, the format definition information necessary for starting the disk can be detected quickly,
Further, since the format definition information does not coexist with the continuous data and the random data, the data recording / reading process can be simplified. Further, the disc 110 has a structure in which consecutive addresses are recorded from the disc outer peripheral portion toward the inner periphery, and the random data recording area 111 and the continuous data recording area 112 have the same physical address, sector structure, and physical format. , Random data recording area 1
Since it is divided into 11 and the continuous data recording area 112, one disk surface can be arbitrarily divided into the random data recording area 111 and the continuous data recording area 112, and by changing only the logical format process of the same type of disk 110. It can be used in various area divisions.

The rewritable random data recording area 11
In No. 3, the alternative area is provided in an area different from the user data area, and the continuous data recording area 112 and the read-only random data recording area 114 are provided with a parity sector for every certain sector. Performs a defect replacement process in which a defective sector is detected during recording or by a verify operation, and sector replacement is performed for the detected defective sector using a replacement sector arranged at a position distant from the defective sector.
12 and the read-only random data recording area 114, the defective sector is subjected to a defect repair process using a parity sector arranged immediately after the fixed sector on the disc 110 at the time of reproducing the disc to thereby obtain random data. Can ensure the reliability of data, and continuous data can ensure the continuity of data.

In the above first and second embodiments, ZC
Although the description has been made with respect to the AV type disc, the present invention can be applied to the discs of other types as shown in FIGS. 9 and 10. Figure 9 shows CAV (Constant Angular Veloc)
FIG. 3 is a schematic view of a format called “ity” system, in which a disk 131 is provided with a center hole 132 for mounting and rotating the apparatus, and a recording area 135 around which a user records information. The recording area 135 is provided with fine tracks (not shown) for recording information spirally or concentrically at a pitch of about 1 μm, and an address 1 indicating the position and angle of this track is provided.
33, 134 and the like are recorded in advance in the shape of intermittent tracks.

In the disk of this system, since the sector angles of the entire disk are the same, the transfer rate speed of the inner and outer circumferences is constant, the recording / reproducing process can be simplified, and the access speed can be increased. Although it is easy to handle when viewed from the viewpoint, the recording density of the inner and outer circumferences is different, and the recording density is lower toward the outer circumference, so ZC is used in terms of maximum utilization of the disk surface.
AV is superior. The information to be recorded is recorded in each sector as a pit string having an optical change by a method such as intensity modulation of a laser. In the figure, the number of sectors is 18, but many have more sectors.

FIG. 10 shows CLV (Constant Linear Velocity).
FIG. 2 is a schematic diagram of a format called “city”, in which a disk 141 has a central hole 1 for mounting and rotating the device.
42 is provided around which a recording area 146 for the user to record information is provided. In this recording area 146,
A fine track (not shown) for recording information in a spiral or concentric pattern with a pitch of about 1 μm is provided, and an address 143 indicating the position and angle of this track is provided.
144 and the like are recorded in advance in the shape of intermittent tracks.

In this type of disc, the sector lengths of the entire disc are made the same, and the relative speeds of the inner and outer peripheries are kept constant. Controlled to become. This allows the transfer rate speed and recording density of the inner and outer circumferences to be constant,
Although it is excellent in terms of maximum utilization of the disk surface, the sector positions of adjacent tracks are not aligned, so the sector length when jumping to adjacent tracks fluctuates and the rotation is temporarily disturbed, making it difficult to speed up access. So, it is slightly disadvantageous for computer applications that require high speed,
Capacity can be maximized for disks of the same size and track pitch. The information to be recorded is recorded in each sector as a pit string having an optical change by a method such as intensity modulation of a laser.

The present invention is effective in multimedia applications in which random data and continuous data are required to be mixed in any of the above-mentioned system disks, and high speed recording is possible depending on the characteristics of each system. The CAV or ZCAV method is used when the highest priority is given to the performance, the ZCVA method is used to achieve high speed and large capacity, and the CLV method is used to achieve the maximum capacity.

Next, an information recording method using the above-described information recording medium as the third embodiment will be described below with reference to FIGS. 1 to 4. As shown in FIG. 1, this information recording method uses an information recording device to record random data and continuous data on the same surface of a disk 10 in a random data recording area 11 and a continuous data recording area 12. Record separately.

At this time, the random data is recorded in the random data recording area 11 provided on the inner circumference side of the disc,
The continuous data is recorded in the continuous data recording area 12 provided on the outer peripheral side of the disc. When the random data recording area 11 is composed of the rewritable random data recording area 13 and the read-only random data recording area 14, the random data that does not need to be rewritten is the read-only random data recorded on the inner circumference side of the disc. It is pre-recorded in the area 15 at the time of production with pre-pits or the like. Similarly, when the continuous data recording area 12 includes a rewritable continuous data recording area 15 and a read-only continuous data recording area 16, continuous data that does not need to be rewritten is read-only continuous data recorded on the outer circumference side of the disc. Pre-pits or the like are recorded in the area 16 in advance during production.

In the third embodiment, the ZCAV disc is characterized in that the data having a higher transmission rate is arranged in the area on the outer periphery side, paying attention to the characteristic that the transmission rate becomes faster toward the outer periphery. And Therefore, the above-mentioned area arrangement method is an example, and the area to be arranged may be determined by judging the contents to be recorded. For the logical format for recording and playback, for random data,
Random data recording area 1 in a logical format according to the logical specifications of the computer or host system used
The continuous data is recorded in the continuous data recording area 12 in a fixed logical format regardless of the logical specifications of the computer or the host system. At this time, the rewritable random data recording area 13 detects a defective sector during recording or by a verify operation (verification operation), performs a defect replacement process of performing sector replacement using a replacement sector on the detected defective sector, and performs continuous replacement. The data recording area 12 and the read-only random data recording area 14 perform a defect repairing process on the defective sector for each fixed sector on the disk 10 using a parity sector immediately after that at the time of data reproduction. The verify operation refers to once reading the data written on the disk and comparing it with the original data to verify whether the data is correctly written on the disk.

Further, the arrangement of the random data recording area 11 and the continuous data recording area 12 on the disc surface is determined by the presence / absence of the rewritable random data recording area 13 and the read-only random data recording area 14 and the rewritable continuous data recording area. 15 and the presence or absence of the reproduction-only continuous data recording area 16,
The logical format definition information that defines the arrangement and the like is provided at a predetermined position on the same surface of the disk 10, for example, the disk 10.
Innermost or outermost logical format definition area 1
Record at 7 and 18.

At this time, continuous addresses are recorded on the disk 10 from the outer circumference of the disk toward the inner circumference. The random data recording area 11 and the continuous data recording area 12 have the same physical address, sector structure, and physical format. To do.

Further, although it has been described that the disk 10 records addresses continuous from the disk outer periphery toward the disk inner circumference, the disk 10 has addresses continuous from the disk inner circumference toward the disk outer circumference. The same effect can be obtained by recording. According to the information recording method of the third embodiment, the disc 1
Since random data recording area 11 for recording random data and continuous data recording area 12 for recording continuous data are provided on the same surface of 0, when recording random data on a recording medium suitable for conventional continuous data recording , And prevent the deterioration of performance that appears when recording continuous data on a recording medium suitable for recording random data, and ensure the continuity of data by giving a recording format suitable for continuous data to continuous data. By providing the random data with a recording format suitable for the random data, the data search time can be shortened, and these two types of data can be simultaneously realized on the same disk 10. Ideal for mixed multimedia environments.

Further, since the ZCAV type disk 10 is used to record continuous data on the outer peripheral side of the disk 10 capable of high-speed data transmission, it is easy to secure the immediacy or continuity of recording and reproduction of continuous data. The random data recording area 11 is recorded in a logical format according to the logical specifications of the computer or host system used,
Since the continuous data recording area 12 is recorded in a constant logical format regardless of the logical specifications of the computer or host system, the logical format of the random data storage area 11 is changed for various computers and host systems with different operation systems. However, since it is not necessary to change the logical format of the continuous data recording area 12, the same continuous data can be easily applied to various computers and host systems.

Since the format definition information is recorded on the disc surface, the arrangement of the random data recording area 11 and the continuous data recording area 12 can be arbitrarily set by the format definition information, and the random data can be changed by changing the format definition information. The arrangement of the recording area 11 and the continuous data recording area 12 can be changed. Also, since the format definition information is recorded on at least one of the outermost circumference and the innermost circumference of the disc, the format definition information required at the time of starting the disc can be quickly detected, and the format definition information and the continuous data and the random data are mixed. Therefore, the data recording / reading process can be simplified.

Further, the rewritable random data recording area 13
Detects a defective sector during recording or by a verify operation, and performs a defect replacement process of performing sector replacement using a replacement sector located at a position distant from the defective sector for the detected defective sector. The reliability can be secured. In addition, continuous data recording area 1
2 and the read-only random data recording area 14 secures data continuity because a defect repairing process using a parity sector arranged immediately after every fixed sector on the disk 10 is performed on the defective sector at the time of reproduction. be able to. In the third embodiment, the logical format definition in which various kinds of information necessary for using the disk, such as presence / absence of each area, division position, and parity ratio of continuous data, are provided on the innermost and outermost circumferences of the disk. By recording the data in the areas 17 and 18 and changing the data recorded in the logical format definition areas 17 and 18, it is possible to arbitrarily change the presence or absence of each area, the division position, and the like. If the logical format indicating presence / absence and division position is fixed, presence / absence of each area in the logical format definition area does not need to be recorded, and presence of each area in a personal computer or the like using the information recording device. It is also possible to store the presence / absence and the division position and to uniquely access.

Next, an information recording method using the above-described information recording medium as the fourth embodiment will be described below with reference to FIGS. 6 to 8. As shown in FIG. 6, this information recording method uses an information recording device to record random data and continuous data on the same surface of the disk 110 in a random data recording area 111 and a continuous data recording area 112. Record separately.

At this time, the random data is recorded in the random data recording area 111 provided on the outer peripheral side of the disc, and the continuous data is recorded in the continuous data recording area 112 provided on the inner peripheral side of the disc. When the random data recording area 111 includes the rewritable random data recording area 113 and the read-only random data recording area 114, the random data that does not need to be rewritten is the read-only random data recording area arranged on the outer circumference side of the disc. Pre-pits and the like are recorded in 115 at the time of production. Similarly, when the continuous data recording area 112 includes a rewritable continuous data recording area 115 and a reproduction-only continuous data recording area 116, continuous data that does not need to be rewritten is reproduction-only continuous data arranged on the inner circumference side of the disc. Recording area 116
It is pre-recorded at the pre-pit etc. at the time of production.

Regarding the logical format for recording / reproducing, random data is recorded in the random data recording area 111 in a logical format according to the logical specifications of the computer or host system used, and continuous data is recorded in the computer or host system. The data is recorded in the continuous data recording area 112 in a fixed logical format regardless of the logical specifications of At this time, the rewritable random data recording area 113 detects a defective sector during recording or by a verify operation (verification operation), performs a defect replacement process of performing sector replacement using a replacement sector on the detected defective sector, and performs continuous replacement. In the data recording area 112 and the reproduction-only random data recording area 114, a defect repair process using a parity sector arranged immediately after the fixed sector on the disk 10 is performed on the defective sector at the time of data reproduction.

Further, the arrangement of the random data recording area 111 and the continuous data recording area 112 on the disk surface is determined by the presence / absence of the rewritable random data recording area 113 and the read-only random data recording area 114 and the rewritable continuous data recording area. 115 and reproduction-only continuous data recording area 1
The logical format definition information that defines the presence or absence of 16 and the arrangement thereof is recorded in a predetermined position on the same surface of the disk 110, for example, in the innermost logical format definition area 117 of the disk 110.

At this time, continuous addresses are recorded on the disk 110 from the outer circumference of the disk toward the inner circumference. Random data recording area 111 and continuous data recording area 11
Reference numeral 2 has the same physical address, sector structure, and physical format, and is divided into a random data recording area 111 and a continuous data recording area 113 by a logical format process performed at the start of use of the disk.

Further, although it has been described that the disk 110 records continuous addresses from the disk inner peripheral portion toward the disk outer peripheral portion, the disk 110 has continuous addresses from the disk outer peripheral portion toward the disk inner peripheral portion. The same effect can be obtained by recording.
According to the information recording method of the fourth embodiment, the random data recording area 111 for recording random data and the continuous data recording area 112 for recording continuous data are provided on the same surface of the disk 110. When random data is recorded on a recording medium suitable for recording continuous data, and when continuous data is recorded on a recording medium suitable for recording random data, it is possible to prevent the deterioration of performance that occurs, and to record continuous data as continuous data. Data continuity is ensured by giving a recording format suitable for the random data, and the search time of the data is shortened by giving the recording format suitable for the random data to the random data, and these two types of data are recorded on the same disc. It can be realized on 110 at the same time and is most suitable for the multimedia environment where random data and continuous data are mixed. .

The random data recording area 111 is recorded in a logical format according to the logical specifications of the computer or host system used, and the continuous data recording area 112 is a constant logical format regardless of the logical specifications of the computer or host system. Since the data is recorded, it is not necessary to change the logical format of the continuous data recording area 112 with respect to various computers or host systems having different operation systems, only changing the logical format of the random data storage area 111.
Using the same continuous data makes it easy to deploy to various computers and host systems.

Further, since the format definition information is recorded on the disc surface, the arrangement of the random data recording area 111 and the continuous data recording area 112 can be arbitrarily set by the format definition information, and the random data can be changed by changing the format definition information. The arrangement of the recording area 111 and the continuous data recording area 112 can be changed. Also, since the format definition information is recorded on at least one of the outermost circumference and the innermost circumference of the disc, the format definition information required at the time of starting the disc can be quickly detected, and the format definition information and the continuous data and the random data are mixed. Therefore, the data recording / reading process can be simplified.

The rewritable random data recording area 11
No. 3 performs defect replacement processing in which a defective sector is detected during recording or by a verify operation, and sector replacement is performed for the detected defective sector using a replacement sector arranged at a position distant from the defective sector. The reliability of can be secured. Further, since the continuous data recording area 112 and the read-only random data recording area 114 perform a defect repairing process on a defective sector for each fixed sector on the disk 110 using a parity sector immediately after that, at the time of reproduction, The continuity of can be secured.

In the fourth embodiment, various information necessary for using the disk, such as presence / absence of each area, division position, and parity ratio of continuous data, is provided at the innermost and outermost circumferences of the disk. By recording in the logical format definition area 117 and changing the data recorded in the logical format definition area 117, the presence or absence of each area, the division position, etc. can be arbitrarily changed, but the presence or absence of each area Assuming that the logical format indicating the division position is fixed, it is not necessary to record the presence or absence of each area in the logical format definition area and the division position. The presence / absence and the division position may be stored and uniquely accessed.

Next, the flow of processing of the information recording apparatus for carrying out the above-mentioned information recording method as the fifth embodiment will be described with reference to the flowchart of FIG. In this information recording apparatus, first, in step 41, apparatus startup processing is performed. Next, after the command processing from the interface is performed in step 42, it is determined in step 43 whether or not an optical disk is inserted in the optical disk device, and if there is no insertion, the processing returns to the command processing from the interface.

If an optical disk is inserted in the optical disk device, then in step 44 disk startup processing is performed, and in step 45 the information in the format definition area on the disk is reproduced. Next, in step 46, it is determined whether or not a read command or a write command (R / W command) has arrived. When a read command or a write command arrives, in step 47, the access area (R / It is judged whether the W area) is a random data recording area (rewritable type only) or a continuous data recording area (including a read-only random data recording area). Sector processing is performed, and if it is a continuous data recording area, error sector processing by the parity detector is performed in step 49.

Thereafter, in step 50, it is determined whether or not a disc eject command has arrived, and the processing after detection of the read command or write command is repeated until the disc eject command arrives. When a disc ejection command arrives, the disc is ejected in step 51. The processing operation shown in the above flow chart is functionally expressed as follows. That is, this information recording apparatus includes a device start-up processing unit that performs a device start-up process, an interface command processing unit that executes a command process from an interface, a disc insertion detection unit that detects insertion of a disc into an optical disc device, and a disc insertion A disk start-up processing means for performing a disk start-up processing in response to the output of the detecting means, a format definition information reproducing means for reproducing the format definition area information of the disk, and a read / write command detecting means for detecting a read / write command. And a read / write area for determining whether the read / write area is a rewritable random data area or another data area based on the address included in the read / write instruction detected by the read / write instruction detecting means and the format definition area information of the disk. Write area determination means and read / write area An error that performs error sector processing by the alternative sector processing when the read / write area is a rewritable random data area based on the output of the determination means, and error sector processing by the parity sector when the read / write area is other area The sector processing means and the disk ejection means for detecting the disk ejection command and ejecting the disk from the optical disk device are provided.

In the above embodiments, the magneto-optical disk and the phase change type optical disk have been described as examples.
It is needless to say that the present invention is applied to an optical recording method using a dye-change recording material or other recording material, and is applied to a medium and an apparatus having different recording principles such as magnetic recording and mechanical recording. Furthermore, the information recording apparatus of the present invention is effective not only in the recording apparatus but also in a reproduction-only apparatus for reproducing a medium recorded in the same recording format, except for the recording function.

It goes without saying that various modifications can be made to the preferred embodiments described above in the present invention. Accordingly, the preferred embodiments described herein are illustrative and not limiting. The scope of the invention is indicated by the appended claims, and all variations that come within the meaning of those claims are included in the invention.

[0126]

According to the information recording medium of the first aspect,
Since a random data recording area for recording random data and a continuous data recording area for recording continuous data are provided on the same surface of the disc, when recording random data on a recording medium suitable for recording conventional continuous data, and Prevents the deterioration of performance that appears when recording continuous data on a recording medium suitable for recording random data, and secures data continuity by giving recording characteristics suitable for continuous data to continuous data. By giving the data recording characteristics suitable for random data, the data search time can be shortened, and these two types of data can be simultaneously realized on the same recording medium, and random data and continuous data are mixed. Ideal for multimedia environment.

According to the information recording medium of the second aspect, Z
Since the CAV type disc is used and the continuous data recording area is arranged on the outer peripheral side of the disc capable of high-speed data transmission,
This makes it easy to secure the immediacy or continuity of recording / reproducing of continuous data that requires a higher transmission rate. Claim 3
According to the described information recording medium, when the random data recording area is composed of the rewritable random data recording area and the reproduction-only random data recording area, the reproduction-only random data recording area is arranged on the inner circumference side of the disc. The data for information detection recorded in the rewritable random disc recording area arranged on the outer circumference side can be searched more quickly, the read-only random data recording area can be quickly accessed, and the data is recorded in advance on the disc. Random data such as existing computer data can be read out quickly, and the start-up of the computer or host system can be accelerated.

According to the information recording medium of the fourth aspect, when the continuous data recording area comprises the rewritable continuous data recording area and the reproduction-only continuous data recording area, the reproduction-only continuous data recording area is provided on the outer peripheral side of the disc. Since the data is arranged, the transmission rate of the data in the reproduction-only continuous data recording area is increased, and continuous data such as images and sounds recorded in advance on the disc can be quickly read.

According to the information recording medium of the fifth aspect, the random data recording area is set to a logical format according to the logical specification of the computer or host system used, and the continuous data recording area is set to the logical specification of the computer or host system. Since the logical format is set to a fixed value regardless of the operating system, it is not necessary to change the logical format of the random data recording area for various computers and host systems with different operating systems. Therefore, the same continuous data can be used to easily deploy to various computers and host systems.

According to the information recording medium of the sixth aspect, since the format definition area for recording the format definition information is provided on the disc surface, the arrangement of the random data recording area and the continuous data recording area can be arbitrarily set by the format definition information. This can be set, and the arrangement of the random data recording area and the continuous data recording area can be changed by changing the format definition information.

According to the information recording medium of the seventh aspect, since the format definition area for recording the format definition information is provided on the disc surface, the arrangement of the random data recording area and the continuous data recording area can be arbitrarily set by the format definition information. This can be set, and the arrangement of the random data recording area and the continuous data recording area can be changed by changing the format definition information.

According to the information recording medium of the eighth aspect, since the format definition area for recording the format definition information is provided on the disc surface, the arrangement of the random data recording area and the continuous data recording area can be arbitrarily set by the format definition information. This can be set, and the arrangement of the random data recording area and the continuous data recording area can be changed by changing the format definition information.

According to the information recording medium of the ninth aspect, since the format definition area is arranged on at least one of the outermost circumference and the innermost circumference of the disc, the format definition information required at the time of starting the disc can be promptly detected. Further, since the format definition information does not coexist with the continuous disk and the random disk, the data recording / reading process can be simplified.

According to the information recording medium of the tenth aspect,
The disc has a structure in which consecutive addresses are recorded from the outer periphery of the disc toward the inner periphery.The random data recording area and the continuous data recording area have the same physical sector structure and physical format. The format process divides into a random data recording area and a continuous data recording area, so one disk surface can be arbitrarily divided into a random data recording area and a continuous data recording area, and only the logical format processing is changed for the same type of disk. By doing so, it can be used in various area divisions.

According to the information recording medium of claim 11,
The rewritable random data recording area is provided with an alternative area in a different area from the user data area, and the continuous data recording area and the read-only random data recording area are provided with a parity sector for every certain sector. Detects a defective sector during recording or by a verify operation, and performs a defect replacement process of performing sector replacement using a replacement sector arranged at a position distant from the defective sector for the detected defective sector, and a continuous data recording area and In the read-only random data recording area, the defect data is recorded at a certain sector on the disc by a defect repair process using a parity sector located immediately after the sector. Can be secured and continuous data is data continuity It can be ensured.

According to the information recording medium of claim 12,
In addition to the effect of claim 11, for various computers and host systems with different operation systems,
Since it is not necessary to change the logical format of the continuous data recording area only by changing the logical format of the random data recording area, the same continuous data can be used to easily expand to various computers and host systems.

According to the information recording medium of claim 13,
In addition to the effect of claim 12, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the arrangement of the random data recording area and the continuous data recording area can be changed by changing the format definition information. Become. According to the information recording medium of claim 14, in addition to the effect of claim 13, the format definition area is arranged at least at one of the outermost circumference and the innermost circumference of the disc. It can be detected promptly, and since the format definition information and continuous data and random data do not coexist, the data recording / reading process can be simplified.

According to the information recording medium of the fifteenth aspect,
In addition to the effect of the fourteenth aspect, since continuous data is fixed on the outer circumference of the disk and random data is fixed on the inner circumference of the disk, the recording position can be easily handled when viewed from the host computer. According to the information recording medium of claim 16, in addition to the effect of claim 15, since the read-only random data is not arranged between the random data and the continuous data, the area of the random data and the continuous data It is possible to freely decide the distribution of the disk, and it is possible to use the disk efficiently according to the purpose.

According to the information recording medium of claim 17,
In addition to the effect of claim 15, since the reproduction-only continuous data is not arranged between the random data and the continuous data, it is possible to freely decide the distribution of the areas of the random data and the continuous data, depending on the application. It is possible to use the disk efficiently. According to the information recording medium of claim 18, in addition to the effect of claim 15, by performing a logical format process at the start of use of the disk, the information recording medium is divided into a random data recording area and a continuous data recording area, and one disk surface is formed. Can be arbitrarily divided into a random data recording area and a continuous data recording area, and various area divisions can be dealt with by changing only the logical format processing for the same type of disk.

According to the information recording medium of claim 19,
ZC in addition to the effect of claims 15, 16, 17 or 18
By adopting the AV type disc, the data transmission rate at the outer peripheral portion of the disc becomes higher than that of the other type discs, so that the continuous data recording area for recording the continuous data becomes capable of high speed data transmission, In order to ensure the immediacy or continuity of recording / reproducing continuous data that requires a transmission rate, and to search the information in the rewritable random data recording area in the rewritable random data recording area arranged on the outer peripheral side. Since the information is often recorded, the search information can be read out at a higher speed, the read-only random data recording area is quickly accessed, and random data such as computer data recorded in advance on the disc is recorded. Is read out promptly.

According to the information recording medium of claim 20,
In addition to the effect of the fourteenth aspect, since continuous data is fixed on the inner circumference and random data is fixed on the outer circumference of the disk, the recording position can be easily handled when viewed from the host computer. According to the information recording medium of claim 21, in addition to the effect of claim 20, since the read-only random data is not arranged between the random data and the continuous data, the area of the random data and the continuous data It is possible to freely decide the distribution of the disk, and it is possible to use the disk efficiently according to the purpose.

According to the information recording medium of claim 22,
In addition to the effect of claim 20, since the reproduction-only continuous data is not arranged between the random data and the continuous data, it is possible to freely determine the distribution of the areas of the random data and the continuous data, and according to the application. It is possible to use the disk efficiently. According to the information recording medium of claim 23, in addition to the effect of claim 20, by performing a logical format process at the start of use of the disk, the information recording medium is divided into a random data recording area and a continuous data recording area. Can be arbitrarily divided into a random data recording area and a continuous data recording area, and various area divisions can be dealt with by changing only the logical format processing for the same type of disk.

According to the information recording medium of claim 24,
ZC in addition to the effect of claim 20, 21, 22 or 23
By adopting the AV type disc, the data transmission rate of the disc outer peripheral portion becomes higher than that of other type discs. Therefore, when continuous data is audio information, it is more random than the high speed requirement of continuous data. This is advantageous when the high speed demand for data is high.

According to the information recording method of claim 25,
Since a random data recording area for recording random data and a continuous data recording area for recording continuous data are provided on the same surface of the disc, when recording random data on a recording medium suitable for recording conventional continuous data, and Prevents the deterioration of performance that appears when recording continuous data on a recording medium suitable for recording random data, and secures data continuity by giving recording characteristics suitable for continuous data to continuous data. By giving the data recording characteristics suitable for random data, the data search time can be shortened, and these two types of data can be simultaneously realized on the same recording medium, and random data and continuous data are mixed. Ideal for multimedia environment.

According to the information recording method of claim 26,
Since the ZCAV type disc is used and continuous data is recorded on the outer peripheral side of the disc capable of high-speed data transmission, it is easy to secure the immediacy or continuity of recording and reproduction of the continuous data. According to the information recording method of claim 27, the random data recording area is recorded in a logical format according to the logical specifications of the computer or host system used,
The continuous data recording area is recorded in a fixed logical format regardless of the logical specifications of the computer or host system, so it is only necessary to change the logical format of the random data recording area for various computers and host systems with different operating systems. Since it is not necessary to change the logical format of the continuous data recording area,
Using the same continuous disk facilitates deployment to various computers and host systems.

According to the information recording method of claim 28,
Since the format definition information is recorded on the disc surface, the arrangement of the random data recording area and the continuous data recording area can be arbitrarily set by the format definition information,
The layout of the random data recording area and the continuous data recording area can be changed by changing the format definition information.

According to the information recording method of claim 29,
Since the format definition information is recorded on at least one of the outermost circumference and the innermost circumference of the disc, the format definition information required at the time of starting the disc can be quickly detected, and the format definition information and continuous data and random data do not mix, The data recording / reading process can be simplified.

According to the information recording method of claim 30,
The rewritable random data recording area performs a defect replacement process in which a defective sector is detected during recording or by a verify operation, and sector replacement is performed for the detected defective sector using a replacement sector arranged at a position distant from the defective sector. Therefore, the reliability of the recorded data can be ensured. In addition, since the continuous data recording area and the read-only random data recording area perform defect repair processing on the defective sector using a parity sector arranged immediately after each fixed sector on the disk at the time of reproducing the disk, continuous data recording is performed. It is possible to secure the sex.

According to the information recording method of claim 31,
In addition to the effect of claim 30, for various computers and host systems having different operation systems, only changing the logical format of the random data recording area does not require changing the logical format of the continuous data recording area. Using the same continuous data makes it easy to deploy to various computers and host systems.

According to the information recording method of claim 32,
In addition to the effect of claim 31, the arrangement of the random data recording area and the continuous data recording area is arbitrarily set by the format definition information, and the arrangement of the random data recording area and the continuous data recording area can be changed by changing the format definition information. Become. According to the information recording method of claim 33, in addition to the effect of claim 32, the format definition area is arranged on at least one of the outermost circumference and the innermost circumference of the disc. It can be detected promptly, and since the format definition information and continuous data and random data do not coexist, the data recording / reading process can be simplified.

According to the information recording method of claim 34,
In addition to the effect of the thirty-third aspect, since continuous data is fixed on the outer circumference of the disc and random data is fixed on the inner circumference, the recording position can be easily handled when viewed from the host computer. According to the information recording method of claim 35, in addition to the effect of claim 34, by adopting the disk of ZCAV system, the data transmission rate of the disk outer peripheral portion is higher than that of the disk of other systems, The continuous data recording area for recording continuous data enables high-speed data transmission, and it is possible to secure the immediateness or continuity of recording and reproduction of continuous data that requires a higher transmission rate.
In the rewritable random data recording area arranged on the outer peripheral side, information for searching the information in the read-only random data recording area is often recorded, which makes it possible to read the search information at a higher speed. , The read-only random data recording area is quickly accessed, and random data such as computer data previously recorded on the disc is quickly read.

According to the information recording method of claim 36,
In addition to the effect of the thirty-third aspect, since continuous data is fixed on the outer circumference of the disc and random data is fixed on the inner circumference, the recording position can be easily handled when viewed from the host computer. According to the information recording method of claim 37, in addition to the effect of claim 36, by adopting the ZCAV type disc, the data transmission rate becomes higher in the outer peripheral portion of the disc than in the other type discs. This is advantageous when the continuous data is voice information or the like and the random data has a higher speed requirement than the continuous data.

According to the information recording apparatus of claim 38,
When random data is recorded on a recording medium suitable for conventional continuous data recording, and when continuous data is recorded on a recording medium suitable for recording random data, it is possible to prevent the deterioration of performance that appears, Data continuity is ensured by giving recording characteristics suitable for continuous data, and data retrieval time is shortened by giving recording characteristics suitable for random data to random data, and these two types of data are the same. It can be realized on the same recording medium at the same time and is most suitable for the multimedia environment in which random data and continuous data are mixed.

Further, according to the present invention, various combinations of the above-mentioned configuration and recording methods such as the CAV and CLV methods of the disk and the disk in which the addresses continuous from the inner peripheral portion of the disk toward the outer peripheral portion are recorded, High-speed continuous data, continuous data, reliability and high-speed random data, capacity required by host computer, responsiveness, etc. It is possible to provide an information recording medium, a recording method, and a recording apparatus which are optimum for a multimedia environment in which the continuous data and the continuous data are mixed.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a state of arrangement of continuous data and random data on an information recording medium according to first and third embodiments of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a rewritable random data recording area according to the first and third embodiments.

FIG. 3 is a schematic diagram showing a configuration of a read-only random data recording area according to the first and third embodiments.

FIG. 4 is a flow chart showing the operation of the information recording apparatus for carrying out the information recording method of the present invention.

FIG. 5 is a schematic diagram showing a configuration of a ZCAV type disc.

FIG. 6 is a schematic diagram showing the arrangement of continuous data and random data in the information recording medium of the second and fourth embodiments of the present invention.

FIG. 7 is a schematic diagram showing a configuration of a rewritable random data recording area according to the second and fourth embodiments.

FIG. 8 is a schematic diagram showing the structure of a read-only random data recording area according to the second and fourth embodiments.

FIG. 9 is a schematic diagram showing a configuration of a CAV type disc.

FIG. 10 is a schematic diagram showing a configuration of a CLV system disc.

[Explanation of symbols]

 10 disk 11 random data recording area 12 continuous data recording area 13 rewritable random data recording area 13a user data area 13b alternative area 14 read-only random data recording area 14a user data area 14b parity sector area 15 rewritable continuous data recording area 16 playback Dedicated continuous data recording area 101 disk 103 address 104 address 110 disk 111 random data recording area 112 continuous data recording area 113 rewritable random data recording area 113a user data area 113b alternative area 114 read-only random data recording area 114a user data area 114b parity Sector area 115 Rewritable continuous data recording area 116 Read-only continuous data recording area

Claims (38)

[Claims] 1. An information recording medium comprising a random data recording area for recording random data and a continuous data recording area for recording continuous data on the same surface of a disc. 2. A zoned CAV having a format in which a disc is rotated at a constant number of revolutions, the disc is divided into a plurality of zones in the radial direction, and the number of sectors is the same in the same zone and the number of sectors is larger in the outer peripheral zone. Below, ZC
2. The information recording medium according to claim 1, wherein a random data recording area is arranged on the inner circumference side of the disk and a continuous data recording area is arranged on the outer circumference side of the disk by using the (AV) method. 3. The random data recording area comprises a rewritable random data recording area and a read-only random data recording area, and the read-only random data recording area is arranged on the inner circumference side of the disc. Information recording medium. 4. The continuous data recording area comprises a rewritable continuous data recording area and a reproduction-only continuous data recording area, and the reproduction-only continuous data recording area is arranged on the outer peripheral side of the disc. Information recording medium. 5. The random data recording area is set to a logical format according to the logical specifications of a computer or a host system to be used, and the continuous data recording area is set to a constant logical format regardless of the logical specifications of the computer or the host system. The information recording medium according to claim 1, wherein the information recording medium is set. 6. A format definition area for recording format definition information defining the arrangement of a random data recording area and a continuous data recording area on the disk surface is provided at a predetermined position on the disk surface. 1. The information recording medium described in 1. 7. A format definition area for recording format definition information defining the arrangement of a random data recording area and a continuous data recording area on the disk surface is provided at a predetermined position on the disk surface. 4. The information recording medium described in 4. 8. A format definition area for recording format definition information for defining the arrangement of the random data recording area and the continuous data recording area on the disk surface is provided at a predetermined position on the disk surface. 5. The information recording medium described in 5. 9. The method according to claim 6, wherein the predetermined position on the disk surface where the format definition area is provided is at least one of the outermost circumference and the innermost circumference of the disk surface. Information recording medium. 10. The disk has a structure in which consecutive addresses are recorded from the outer peripheral portion of the disk toward the inner peripheral portion, and the random data recording area and the continuous data recording area have the same physical address, sector structure, and physical format. The information recording medium according to claim 1, wherein the information recording medium is divided into the random data recording area and the continuous data recording area by a logical formatting process performed at the start of use of the disc. 11. The rewritable random data recording area of the random data recording area is provided with an alternative area at a position distant from the user data area, and a read-only random area of the continuous data recording area and the random data recording area. 2. The information recording medium according to claim 1, wherein a parity sector is provided at a position immediately after the data recording area for every fixed sector. 12. The random data recording area is set to a logical format according to the logical specifications of a computer or a host system to be used, and the continuous data recording area is set to a constant logical format regardless of the logical specifications of the computer or the host system. The information recording medium according to claim 11, wherein the information recording medium is set. 13. A format definition area for recording format definition information for defining the arrangement of the random data recording area and the continuous data recording area on the disk surface is provided at a predetermined position on the disk surface. 12
Information recording medium described. 14. The predetermined position on the disk surface where the format definition area is provided is at least one of the outermost circumference and the innermost circumference of the disk surface.
Information recording medium described. 15. The information recording medium according to claim 14, wherein the random data recording area is arranged on the inner circumference side of the disk and the continuous data recording area is arranged on the outer circumference side of the disk. 16. The random data recording area comprises a rewritable random data recording area and a read-only random data recording area, and the read-only random data recording area is arranged on the inner circumference side of the disc. Information recording medium. 17. The continuous data recording area comprises a rewritable continuous data recording area and a read-only continuous data recording area,
16. The information recording medium according to claim 15, wherein the reproduction-only continuous data recording area is arranged on the outer peripheral side of the disc. 18. The disk has a structure in which continuous addresses are recorded from an outer peripheral portion of the disk toward an inner peripheral portion thereof, and the random data recording area and the continuous data recording area have the same physical address, sector structure and physical format. 16. The information recording medium according to claim 15, wherein the information recording medium is divided into the random data recording area and the continuous data recording area by a logical formatting process performed at the start of use of the disc. 19. The disk according to claim 15, wherein the disk is a disk using the ZCAV system.
The information recording medium according to claim 17 or 18. 20. The information recording medium according to claim 14, wherein the random data recording area is arranged on the outer peripheral side of the disk and the continuous data recording area is arranged on the inner peripheral side of the disk. 21. The random data recording area comprises a rewritable random data recording area and a read-only random data recording area, and the read-only random data recording area is arranged on the outer peripheral side of the disc. Information recording medium. 22. The continuous data recording area comprises a rewritable continuous data recording area and a read-only continuous data recording area,
21. The information recording medium according to claim 20, wherein the read-only continuous data recording area is arranged on the inner peripheral side of the disc. 23. The disk has a structure in which consecutive addresses are recorded from the inner circumference of the disk toward the outer circumference, and the random data recording area and the continuous data recording area have the same physical address, sector structure, and physical format. 21. The information recording medium according to claim 20, wherein the information recording medium is divided into the random data recording area and the continuous data recording area by a logical formatting process performed at the start of use of the disc. 24. The disk according to claim 20, wherein the disk is a ZCAV system disk.
The information recording medium according to claim 22 or 23. 25. An information recording method, wherein random data and continuous data are recorded in different recording areas on the same surface of a disc. 26. The information recording method according to claim 25, wherein a ZCAV type disc is used as the disc, random data is recorded on the disc inner circumference side, and continuous data is recorded on the disc outer circumference side. 27. Random data is recorded in a logical format according to the logical specifications of the computer or host system used, and continuous data is recorded in a fixed logical format regardless of the logical specifications of the computer or host system. The information recording method according to claim 25. 28. The information recording method according to claim 25, wherein format definition information defining the arrangement of the random data recording area and the continuous data recording area on the disc surface is recorded at a predetermined position on the disc surface. . 29. The predetermined position on the disk surface for recording the format definition information is at least one of the outermost circumference and the innermost circumference of the disk surface.
8. The information recording method described in 8. 30. The rewritable random data recording area of the random data recording area detects a defective sector during recording or by a verify operation, and is located at a position separated from the defective sector with respect to the detected defective sector. Defect replacement processing is performed to perform sector replacement using the arranged replacement sectors, and the continuous data recording area and the read-only random data recording area of the random data recording area are recorded on the disc at the time of disc reproduction at the defect sector. 26. The information recording method according to claim 25, wherein the defect repairing process is performed using a parity sector arranged immediately after each of the constant sectors. 31. Random data is recorded in a logical format according to the logical specifications of the computer or host system used, and continuous data is recorded in a fixed logical format regardless of the logical specifications of the computer or host system. 31. The information recording method according to claim 30. 32. The information recording method according to claim 31, wherein format definition information defining the arrangement of the random data recording area and the continuous data recording area on the disc surface is recorded at a predetermined position on the disc surface. . 33. The predetermined position on the disk surface for recording the format definition information is at least one of the outermost circumference and the innermost circumference of the disk surface.
The information recording method described in 2. 34. The information recording method according to claim 33, wherein the random data recording area is arranged on the inner circumference side of the disc and the continuous data recording area is arranged on the outer circumference side of the disc. 35. The information recording method according to claim 34, wherein the disc is a disc using the ZCAV system. 36. The information recording method according to claim 33, wherein the random data recording area is arranged on the outer peripheral side of the disc and the continuous data recording area is arranged on the inner peripheral side of the disc. 37. The information recording method according to claim 36, wherein the disc is a ZCAV disc. 38. A disk insertion detecting means for detecting insertion of a disk into an optical disk device, a disk startup processing means for performing a disk startup processing in response to an output of the disk insertion detecting means, and a format definition of the disk. Format definition information reproducing means for reproducing area information, read / write instruction detecting means for detecting read / write instruction, address included in read / write instruction detected by the read / write instruction detecting means, and format of the disk Read / write area determination means for determining whether the read / write area is a rewritable random data area or other data area based on the definition area information, and the read / write area based on the output of the read / write area determination means.
Error sector processing means for performing error sector processing by alternative sector processing when the write area is the rewritable random data area, and error sector processing by a parity sector when the read / write area is the other area; An information recording device, comprising: a disc ejecting unit that detects a disc eject command and ejects the disc from the optical disc device.