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Title:
複製制限機能付き再生専用光ディスクとその配信方法および適応可能再生装置
Document Type and Number:
Japanese Patent JP4776114
Kind Code:
B2
Abstract:
A copy-resistant read-only digital optical disc having encrypted digital data. The copy-resistant read-only digital optical disc includes a digital work, a variable user data format encoding said digital work after encryption with a variable software algorithm, an implementation of said variable software algorithm, and an implementation of said variable user data format encoded in a default format. The encrypted digital data is read on an adaptable digital optical disc player, which is adaptable to a user data format described on said copy-resistant read-only digital optical disc made in accordance with this invention. A copy-resistant read-only digital optical disc made in accordance with this invention will provide necessary user data format information on the disc in a default format, which is always accessible by an adaptable player.

Inventors:
Han Zu
Terence Jay Nelson
Application Number:
JP2001246030A
Publication Date:
September 21, 2011
Filing Date:
August 14, 2001
Export Citation:
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Assignee:
Panasonic Corporation
International Classes:
G06F12/14; G11B20/12; G06F21/10; G06F21/60; G06F21/62; G11B7/005; G11B7/007; G11B20/00; G11B20/10; H04N5/91; H04N5/85; H04N5/913
Domestic Patent References:
JP9050677A
JP9134310A
JP11134813A
JP8339628A
Attorney, Agent or Firm:
Takuji Yamada
Mitsuo Tanaka
Mitsuo Wada
Aoyama Aoi