記録媒体の製造方法およびその記録媒体

Title:

記録媒体の製造方法およびその記録媒体

Document Type and Number:

Japanese Patent JP2004513469

Kind Code:

A

Abstract:

A record carrier, and method for manufacturing such record carrier, which can be copies with the aid of a copying apparatus, while the copied record carrier is unreadable. During copying with the aid of the copying apparatus, merge bits are selected such that consecutive channel bits or a first type, the type "1", are separated by at least Ia and at most Ib consecutive and continuous bits of the second type, the type "0", and vice versa. The original record carrier, at least over a number of neighboring blocks of channel bits, is provided with specific blocks of merge bits, while consecutive channel bits of one type are separated by Ic or Id consecutive bits of the other type, with IcIb.

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Inventors:

Arnoldas, Johannes, Maria, Van, Dar, Starpen

Application Number:

JP2002541680A

Publication Date:

April 30, 2004

Filing Date:

November 09, 2001

Export Citation:

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Assignee:

OTB GROUP B.V.

International Classes:

G11B20/10; G11B20/00; G11B20/12; G11B20/14; H03M5/14; (IPC1-7): G11B20/10; G11B20/12

Attorney, Agent or Firm:

Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki

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