Title:
デジタル情報再生デバイスのための複製保護方式
Document Type and Number:
Japanese Patent JP4772960
Kind Code:
B2
Abstract:
A method and apparatus for cloning protection of a player. The present invention provides a method and apparatus for providing cloning protection of a software digital information playback device by using an activation procedure prior to use of the playback device. In one embodiment, the playback device is deactivated in order to move the playback device to a different computer system or to otherwise vary the operating conditions of the playback device. To activate the playback device a unique identifier is generated by the playback device. The identifier is communicated to a server and linked to the playback device generating the identifier. In one embodiment, the identifier and a digital signature authenticating the information from the server are communicated to the playback device along with any digital programming. Only digital programming including the identifier and the signature are played by the playback device.
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Inventors:
Barpin, Vipin
Raja Sekarlan, Hideout
Sage, Kay, Shah
Story, Guy A
Raja Sekarlan, Hideout
Sage, Kay, Shah
Story, Guy A
Application Number:
JP2000569334A
Publication Date:
September 14, 2011
Filing Date:
September 10, 1999
Export Citation:
Assignee:
Oddible Inco-Polled
International Classes:
G06F1/00; G06F17/30; G06F12/14; G06F21/22; G06F21/00; G09C1/00; G11B20/00; G11B20/10; H04L9/32; H04N5/91; H04N7/173; H04N21/6334; H04N21/835
Domestic Patent References:
| JPH04287124A | 1992-10-12 | |||
| JPH04111126A | 1992-04-13 |
Foreign References:
| US5375240A | 1994-12-20 | |||
| WO1998011487A1 | 1998-03-19 | |||
| US5337357A | 1994-08-09 | |||
| US5790664A | 1998-08-04 |
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Hiroro Kurokawa
Osamu Nishiyama
Shigeki Yamakawa
Hiroro Kurokawa
Osamu Nishiyama