Title:
OPTICAL DISK DISCRIMINATING METHOD AND OPTICAL DISK REPRODUCING METHOD AND OPTICAL DISK DEVICE
Document Type and Number:
WIPO Patent Application WO/2001/054123
Kind Code:
A1
Abstract:
Requested data is read by an interrupt processing at ST46 from a DVD disk, and ID information indicating the head position of the data and an EDC discriminating result indicating the validity or non-validity of the data are stored at ST47. When a flag is set as being DVD-Video at ST48, the number of retries N is found larger than NR at ST50 and the read data is found not to be a control data at ST51, data is transferred. When a flag is not set, a disk is discriminated at ST49 based on whether or not data in a preset position on a logical format has a preset data. When an error detection is discriminated at ST52 and the number of retries N is found larger than NS at ST53, an error occurrence is notified.
Inventors:
SHISHIDO YUKIO (JP)
Application Number:
PCT/JP2001/000389
Publication Date:
July 26, 2001
Filing Date:
January 22, 2001
Export Citation:
Assignee:
SONY CORP (JP)
SHISHIDO YUKIO (JP)
SHISHIDO YUKIO (JP)
International Classes:
G11B19/12; G11B20/12; G11B20/18; (IPC1-7): G11B19/12; G11B20/10; G11B20/12; G11B20/18; G06F11/14; G06F12/16
Foreign References:
| JPH09306088A | 1997-11-28 | |||
| JPH08102140A | 1996-04-16 | |||
| JPH05307753A | 1993-11-19 | |||
| JPH07272402A | 1995-10-20 | |||
| JPH08329472A | 1996-12-13 | |||
| JPH09134572A | 1997-05-20 | |||
| JPH01294276A | 1989-11-28 |
Attorney, Agent or Firm:
Yamaguchi, Kunio (Uchikanda 1-chome Chiyoda-ku, Tokyo, JP)
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