Information processing device and method, recording medium, and program

Patent metadata

Field	Value
Publication number	US-9911459-B2
Application number	US-201515319285-A
Country	US
Kind code	B2
Filing date	Aug 6, 2015
Priority date	Aug 19, 2014
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

The present technology relates to an information processing device and method, a recording medium, and a program, which can improve a data transfer speed. In the recording medium, a recording area is divided into a plurality of simulated zones and a set of the plurality of simulated zones composes a simulated zone group. Then, an address is set to each area in the simulated zones so that the addresses are interleaved between the simulated zones composing the simulated zone group. By interleaving the addresses between the simulated zones in this manner, a local seek operation or a rotational delay can be reduced and the data transfer speed can be improved when recording or reproducing data to the recording medium in more than one channel at the same time. The present technology can be applied to an optical disk.

First claim

The invention claimed is:

1. A recording medium, wherein
sequential recording areas are divided into a plurality of simulated zones in a predetermined size, and
addresses are set to the respective areas of the simulated zones so that a set of the plurality of simulated zones composes a simulated zone group and the addresses are interleaved in order to switch an access order between the plurality of simulated zones composing the simulated zone group.

2. The recording medium according to claim 1 , wherein the addresses are logical addresses, and sequential physical addresses are set to sequential areas in the recording area.

3. The recording medium according to claim 1 , wherein a predetermined size of a recording unit block, which is a smallest unit of recording or reproducing in the simulated zone, includes a plurality of sectors, which is a smallest unit of a logical access, and the sequential addresses are set to the sequential sectors in the block.

4. The recording medium according to claim 1 , wherein the recording medium records, as management information, at least one of information for specifying an area to be set as a simulated zone, information for specifying a size of the simulated zone, information for specifying a number of simulated zones composing the simulated zone group, and information for specifying the address of each area in the simulated zones composing the simulated zone group.

5. The recording medium according to claim 1 , wherein the recording medium is an optical disk.

6. The recording medium according to claim 5 , wherein the optical disk has two faces and, on each face, one or more recording layers including the recording areas are provided.

7. The recording medium according to claim 1 , wherein the recording area includes a user data area for recording user data and a variable area which is different from the user data area and is variable in its size.

8. The recording medium according to claim 7 , wherein the variable area is at least one of areas of an extended management area for recording management information to manage the recording area and an alternation area used as an alternative of a defective area.

9. The recording medium according to claim 7 , wherein a size of the variable area is an integral multiple of the size of the simulated zones.

10. An information processing device comprising:
a plurality of access processing units configured to record or reproduce data by performing an access control to a recording medium in which sequential recording areas are divided into a plurality of simulated zones in a predetermined size and addresses are set for the respective areas of the simulated zones so that a set of the plurality of simulated zones composes a simulated zone group and the addresses are interleaved between the plurality of simulated zones composing the simulated zone group; and
a control unit configured to control the plurality of the access processing units so that accesses to the recording medium according to the control by the plurality of access processing units are performed at the same time.

11. The information processing device according to claim 10 , wherein the addresses are logical addresses, and sequential physical addresses are set to sequential areas in the recording area.

12. The information processing device according to claim 10 , wherein a block, which is a smallest unit of recording or reproducing in the simulated zones, includes a plurality of sectors, which is a smallest unit of a logical access, and the sequential addresses are set to the sequential sectors in the block.

13. The information processing device according to claim 10 , wherein the recording medium records, as management information, at least one of information for specifying an area as a target for setting simulated zones, information for specifying a size of the simulated zone, information for specifying a number of simulated zones composing the simulated zone group, and information for specifying the address of each area in the simulated zones composing the simulated zone group.

14. The information processing device according to claim 10 , wherein the recording medium is an optical disk.

15. The information processing device according to claim 10 , wherein a number of the access processing units that perform an access control to the recording medium at the same time is an integral multiple of the number of the simulated zones composing the simulated zone group.

16. The information processing device according to claim 10 , wherein a number of the access processing units that perform an access control to the recording medium at the same time is a divisor of the number of the simulated zones composing the simulated zone group.

17. The information processing device according to claim 10 , wherein the control unit controls the plurality of access processing units so that, while some of the plurality of access processing units record data to the recording medium at the same time, other of the plurality of access processing units reproduce data recorded in the recording medium at the same time.

18. The information processing device according to claim 17 , wherein the number of the access processing units that record data at the same time is same as the number of the access processing units that reproduce data at the same time.

19. An information processing method comprising:
by a plurality of access processing units, recording or reproducing data by performing an access control to a recording medium in which sequential recording areas are divided into a plurality of simulated zones in a predetermined size and addresses are set for the respective areas of the simulated zones so that a set of the plurality of simulated zones composes a simulated zone group and the addresses are interleaved between the plurality of simulated zones composing the simulated zone group; and
controlling the plurality of the access processing units so that accesses to the recording medium according to the control by the plurality of access processing units are performed at the same time.

20. A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to execute a method, the method comprising:
by a plurality of access processing units, recording or reproducing data by performing an access control to a recording medium in which sequential recording areas are divided into a plurality of simulated zones in a predetermined size and addresses are set for the respective areas of the simulated zones so that a set of the plurality of simulated zones composes a simulated zone group and the addresses are interleaved between the plurality of simulated zones composing the simulated zone group; and
controlling the plurality of the access processing units so that accesses to the recording medium according to the control by the plurality of access processing units are performed at the same time.

Assignees

• Sony Corp

Inventors

• Ando Hideki
• Horigome Junichi

Classifications

• G11B20/1217 Primary

  on discs · CPC title

• G11B2020/1267

  Address data · CPC title

• G11B2020/1232

  sector, i.e. the minimal addressable physical data unit · CPC title

• G11B20/10

  Digital recording or reproducing · CPC title

• G11B7/0045

  Recording (G11B7/006, G11B7/0065 take precedence) · CPC title