Title:
OPTICAL DISK, OPTICAL DISK RECORDING AND REPRODUCING APPARATUS, METHOD FOR RECORDING, REPRODUCING AND DELETING DATA ON OPTICAL DISK, AND INFORMATION PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO2000067257
Kind Code:
A3
Abstract:
An optical disk of recording type on which data is recordable is provided which includes a data recording and reproducing area (102) for recording data therein and reproducing data therefrom, and a read-only disk identification information area (104) for recording disk identification information (107) for identifying the optical disk therein. In the optical disk, the disk identification information (107) is formed by removing a reflection film formed on the optical disk in a strip shape. The disk identification information (107) includes an inherent disk identifier for each optical disk, and the data recording and reproducing area includes an area for recording therein encrypted data, which is encrypted using information including the disk identification information for identifying the optical disk as a key.
Inventors:
NAGAI TAKAHIRO
ISHIHARA HIDESHI
TAKAGI YUJI
YUMIBA TAKASHI
SHOJI MAMORU
OSHIMA MITSUAKI
OHARA SHUNJI
ITO MOTOSHI
ISHIDA TAKASHI
NAKAMURA ATSUSHI
JAHANA TADASHI
NAKATA KOUHEI
ISHIHARA HIDESHI
TAKAGI YUJI
YUMIBA TAKASHI
SHOJI MAMORU
OSHIMA MITSUAKI
OHARA SHUNJI
ITO MOTOSHI
ISHIDA TAKASHI
NAKAMURA ATSUSHI
JAHANA TADASHI
NAKATA KOUHEI
Application Number:
PCT/JP2000/002750
Publication Date:
April 26, 2001
Filing Date:
April 27, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
International Classes:
G11B7/007; G11B19/12; G11B20/00; G11B20/12; G11B23/28; G11B23/34; G11B23/36; G11B7/0037; G11B7/24038; G11B7/26; (IPC1-7): G11B20/00; G11B7/007; G11B23/28; G06F1/00
Domestic Patent References:
| WO1998058368A1 | 1998-12-23 | |||
| WO2000021087A2 | 2000-04-13 |
Foreign References:
| GB2332977A | 1999-07-07 | |||
| US5596639A | 1997-01-21 | |||
| EP0442566A1 | 1991-08-21 | |||
| US5752009A | 1998-05-12 | |||
| EP0984346A1 | 2000-03-08 | |||
| US5745568A | 1998-04-28 | |||
| EP0802527A1 | 1997-10-22 | |||
| EP0954173A1 | 1999-11-03 | |||
| US5646993A | 1997-07-08 | |||
| US5513169A | 1996-04-30 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 13 30 November 1998 (1998-11-30)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 07 29 September 2000 (2000-09-29)
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 07 29 September 2000 (2000-09-29)
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)
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