JPH02179971A - Optical disk supervising system - Google Patents

Abstract

PURPOSE:To contrive the high speed of the read/write time of user data by arranging alternate areas in a specific area in respective zones, and making a data area and the alternate area coexist in the respective zones. CONSTITUTION:A data area 11 and an alternate area 12 are arranged in a zone 17, a data area 13 and an alternate area 14 are arranged in a zone 18, and a data area 15 and an alternate area 16 are arranged in a zone 19. Thus by arranging the data areas 11, 13 and 15, where defectives have been generated, and the alternate areas 12, 14 and 16 in the same zones 17 to 19, only a moving time 41 to the data area, read/write time 42 in the data area, a moving time 43 to the alternate area, and a read/write time 44 in the alternate area are consumed. Thus, the high speed of the read/write time of the user data on the optical disk device can be contrived.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an optical disc management method.

[Prior Art] Conventionally, in this type of optical disk management system, when a defect occurs in the data area where user data is stored, the
User data was being substituted into an alternative area in a specific area.

[Problems to be Solved by the Invention] In the conventional optical disk management method described above, if the data area in which a defect has occurred is in a zone different from the zone in which the replacement area exists in the specific area, the rotation speed differs for each zone. Therefore, the time it takes for the rotational speed to stabilize is added to the time taken to read and write user data on the optical disk medium, resulting in a disadvantage that the time taken to read and write user data on the optical disk medium becomes slow.

[Means for Solving the Problems] The optical disc management system of the present invention is characterized in that an alternative area in a specific area is arranged in each zone, and a data area and an alternative area coexist in each zone.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 2 is a diagram showing a conventional optical disc management system, and shows the logical structure when data area 1 is placed in zone 6, data area 2 is placed in zone 6, and data area 3 and alternative area 4 are placed in zone 7. It shows.

FIG. 1 is a diagram showing an optical disc management system according to an embodiment of the present invention, in which a data area 11 and an alternative area 12 are in zone 1.
7, the data area 13 and the alternative area 14 are in the zone 18,
A logical structure when a data area 15 and an alternative area 16 are arranged in a zone 19 is shown.

Figure 3 shows a time chart of the time it takes to read, write, and move large data on an optical disk medium to the target address. The total time required to read and write user data on an optical disk medium in a zone different from the alternative area existing in a specific area, the data area where a defect occurred in the previous disk management method in which the present invention was implemented, and the replacement area. FIG. 7 is a diagram showing the total time required to read and write user data on an optical disc medium when the areas are in the same zone.

In the conventional optical disk management system, if the data area where a defect occurs and the alternative area existing in the specific area are in different zones, the time required for moving to the data area 31, the time for reading and writing in the data area 32, and the alternative area It takes time 33 for moving to the target area, time 34 for the rotation time to stabilize due to different zones, and time 35 for reading and writing in the alternative area.

On the other hand, in the optical disk management system according to the present invention, since the data area in which the defect occurred and the replacement area exist in the same zone, the time 41 for moving to the data area, the time 42 for reading and writing in the data area, and the replacement area are It takes time 43 to move to the area, and time 44 to read and write in the alternative area.

[Effects of the Invention] As explained above, the present invention arranges an alternative area in a specific area in each zone, and allows the data area and the alternative area to coexist in each zone, thereby reducing the rotation that occurs when the zones are different. Since the time it takes for the speed to stabilize is not added to the time required to read and write user data on the next disk medium, there is an effect that the time taken to read and write user data on the optical disk medium can be sped up.

time.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the logical structure of an optical disc management method according to an embodiment of the present invention, FIG. 2 is a diagram showing the logical structure of a conventional optical disc management method, FIG. 3 is a time chart of each processing time, and FIG. The figure shows the total time required to read and write user data in the conventional method and the method according to the present invention. 1.2.3...Data area, 4...Alternative area, 5°6.7...Zone, 11,13.15...Data area, 12.14.16...Alternative area, 17.18.1
9... Zone, 31.41... Time to move to data area, 32.42... Time to read and write in data area, 33.43... Time to move to alternative area, 3
4...Time until rotation stabilizes when zones are different, 35.44...Reading and writing in alternative area Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. In a method in which the entire area of an optical disk medium is divided into several zones with different rotational speeds, and user data is managed in all zones using a data area and an alternative area, an alternative area in a specific area is placed in each zone. An optical disc management method characterized in that user data is managed by having a data area and an alternative area coexist in each zone.