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Publication numberWO2001069842 A1
Publication typeApplication
Application numberPCT/JP2001/002003
Publication date20 Sep 2001
Filing date14 Mar 2001
Priority date14 Mar 2000
Publication numberPCT/2001/2003, PCT/JP/1/002003, PCT/JP/1/02003, PCT/JP/2001/002003, PCT/JP/2001/02003, PCT/JP1/002003, PCT/JP1/02003, PCT/JP1002003, PCT/JP102003, PCT/JP2001/002003, PCT/JP2001/02003, PCT/JP2001002003, PCT/JP200102003, WO 0169842 A1, WO 0169842A1, WO 2001/069842 A1, WO 2001069842 A1, WO 2001069842A1, WO-A1-0169842, WO-A1-2001069842, WO0169842 A1, WO0169842A1, WO2001/069842A1, WO2001069842 A1, WO2001069842A1
InventorsTakashi Tsunehiro, Kunihiro Katayama, Nagamasa Mizushima, Takashi Totsuka, Hiroyuki Mano, Kazuo Nakamura, Shigeo Todoroki, Toshiaki Hioki, Takahisa Hatakeyama
ApplicantHitachi,Ltd., Nippon Columbia Co.,Ltd., Sanyo Electric Co.,Ltd., Fujitsu Limited
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Contents reproducing device
WO 2001069842 A1
Abstract
A license key provided for each element of contents data is stored in a key-only storing device provided separately from a contents storing device; the key-only storing device performs an authentication processing on a communicating partner, and, when authenticated, sends a license key corresponding to contents data to be reproduced to a reproducing device using an encrypted communication, whereby the reproducing device decodes the contents data to be reproduced using the license key and reproduces it.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
JPH1040172A * Title not available
JPH04102185A * Title not available
JPH09307543A * Title not available
Non-Patent Citations
Reference
1 *"Kogata memory card de ongaku chosakuken wo mamoru", NIKKEI ELECTRONICS, no. 739, 22 March 1999 (1999-03-22), pages 49 - 53, XP002942132
2 *KIYOSHI YAMANAKA ET AL.: "Multimedia on demande service ni okeru joho hogo system", NTT R & D, vol. 44, no. 9, 10 September 1995 (1995-09-10), pages 813 - 818, XP002942131
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
WO2014147836A1 *22 Mar 201325 Sep 2014Hitachi, Ltd.Maintenance and replacement method for encryption function in storage system, and storage device
US765032824 Jul 200319 Jan 2010Sanyo Electric Co., Ltd.Data storage device capable of storing multiple sets of history information on input/output processing of security data without duplication
US77167464 Mar 200311 May 2010Sanyo Electric Co., Ltd.Data storing device for classified data
US775246113 Jan 20036 Jul 2010Sanyo Electric Co., Ltd.Storage apparatus that can properly recommence input and output of classified data
US781016228 Mar 20055 Oct 2010Samsung Electronics Co., Ltd.Method and apparatus for playing back content based on digital rights management between portable storage and device, and portable storage for the same
US908351310 Sep 201214 Jul 2015Time Warner Cable Enterprises LlcTechnique for securely communicating and storing programming material in a trusted domain
US931345826 Aug 201312 Apr 2016Time Warner Cable Enterprises LlcDownloadable security and protection methods and apparatus
US931353012 Nov 201212 Apr 2016Time Warner Cable Enterprises LlcTechnique for securely communicating programming content
US936927822 Mar 201314 Jun 2016Hitachi, Ltd.Method for maintenance or exchange of encryption function in storage system and storage device
US956547210 Dec 20127 Feb 2017Time Warner Cable Enterprises LlcApparatus and methods for content transfer protection
US96028648 Jun 200921 Mar 2017Time Warner Cable Enterprises LlcMedia bridge apparatus and methods
US967422430 Dec 20136 Jun 2017Time Warner Cable Enterprises LlcApparatus and methods for provisioning in a download-enabled system
US974276819 May 201422 Aug 2017Time Warner Cable Enterprises LlcMethods and apparatus for premises content distribution
US974967728 Mar 201629 Aug 2017Time Warner Cable Enterprises LlcMedia bridge apparatus and methods
Classifications
International ClassificationG11B20/00, H04L9/10
Cooperative ClassificationG11B20/00086, G11B20/00137, G11B20/0021
European ClassificationG11B20/00P2, G11B20/00P5, G11B20/00P
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