OPTICAL DISC, OPTICAL DISK DEVICE, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCTION METHOD

Title:

OPTICAL DISC, OPTICAL DISK DEVICE, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCTION METHOD

Document Type and Number:

WIPO Patent Application WO/2011/108158

Kind Code:

A1

Abstract:

Among discs to which data is recorded at a plurality of types of data recording densities, the disclosed optical disc has a plurality of data recording areas that record information at mutually differing data recording densities. Information regarding the data recording densities in these data recording areas is recorded to a management information recording area (a BCA area and a PIC area) in a particular format that does not depend on the data recording density of the data recording areas. Here, each data recording area is disposed divided on the same surface of the disk, or is disposed divided into a plurality of recording layers.

Inventors:

NISHIMURA Koichiro (HITACHI LTD., 292, Yoshida-cho, Totsuka-ku, Yokohama-sh, Kanagawa 17, 〒2440817, JP)
西村　孝一郎 (〒17 神奈川県横浜市戸塚区吉田町２９２番地　株式会社日立製作所　コンシューマエレクトロニクス研究所内 Kanagawa, 〒2440817, JP)

Application Number:

JP2010/070790

Publication Date:

September 09, 2011

Filing Date:

November 22, 2010

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Assignee:

HITACHI CONSUMER ELECTRONICS CO., LTD. (2-1 Otemachi 2-chome, Chiyoda-ku Tokyo, 04, 〒1000004, JP)
日立コンシューマエレクトロニクス株式会社 (〒04 東京都千代田区大手町二丁目２番１号 Tokyo, 〒1000004, JP)
NISHIMURA Koichiro (HITACHI LTD., 292, Yoshida-cho, Totsuka-ku, Yokohama-sh, Kanagawa 17, 〒2440817, JP)

International Classes:

G11B7/007; G11B7/004; G11B7/24; G11B20/10

Attorney, Agent or Firm:

ASAMURA PATENT OFFICE, p.c. (Tennoz Central Tower, 2-2-24 Higashi-Shinagawa, Shinagawa-k, Tokyo 76, 〒1408776, JP)

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