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Contents reproducing device

Info

Publication number
WO2001069842A1
WO2001069842A1 PCT/JP2001/002003 JP0102003W WO2001069842A1 WO 2001069842 A1 WO2001069842 A1 WO 2001069842A1 JP 0102003 W JP0102003 W JP 0102003W WO 2001069842 A1 WO2001069842 A1 WO 2001069842A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
device
key
contents
reproducing
storing
Prior art date
Application number
PCT/JP2001/002003
Other languages
French (fr)
Inventor
Takashi Tsunehiro
Kunihiro Katayama
Nagamasa Mizushima
Takashi Totsuka
Hiroyuki Mano
Kazuo Nakamura
Shigeo Todoroki
Toshiaki Hioki
Takahisa Hatakeyama
Original Assignee
Hitachi,Ltd.
Nippon Columbia Co.,Ltd.
Sanyo Electric Co.,Ltd.
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00137Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users

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.
PCT/JP2001/002003 2000-03-14 2001-03-14 Contents reproducing device WO2001069842A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000-70672 2000-03-14
JP2000070672 2000-03-14

Publications (1)

Publication Number Publication Date
WO2001069842A1 true true WO2001069842A1 (en) 2001-09-20

Family

ID=18589374

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/002003 WO2001069842A1 (en) 2000-03-14 2001-03-14 Contents reproducing device

Country Status (1)

Country Link
WO (1) WO2001069842A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007531149A (en) * 2004-03-29 2007-11-01 サムスン エレクトロニクス カンパニー リミテッド A content reproducing method and apparatus using the digital rights management between portable storage and a device, a portable storage device for this
JP2008523725A (en) * 2004-12-07 2008-07-03 コムキャスト ケーブル ホールディングス,エルエルシー Technology for communicating the program content safely
JP2008236089A (en) * 2007-03-16 2008-10-02 Ricoh Co Ltd Encryption key recovery method, information processor, and encryption key restoration program
US7650328B2 (en) 2002-07-25 2010-01-19 Sanyo Electric Co., Ltd. Data storage device capable of storing multiple sets of history information on input/output processing of security data without duplication
US7716746B2 (en) 2002-03-05 2010-05-11 Sanyo Electric Co., Ltd. Data storing device for classified data
US7752461B2 (en) 2002-01-15 2010-07-06 Sanyo Electric Co., Ltd. Storage apparatus that can properly recommence input and output of classified data
WO2014147836A1 (en) * 2013-03-22 2014-09-25 株式会社日立製作所 Maintenance and replacement method for encryption function in storage system, and storage device
US9083513B2 (en) 2004-07-20 2015-07-14 Time Warner Cable Enterprises Llc Technique for securely communicating and storing programming material in a trusted domain
US9313458B2 (en) 2006-10-20 2016-04-12 Time Warner Cable Enterprises Llc Downloadable security and protection methods and apparatus
US9565472B2 (en) 2012-12-10 2017-02-07 Time Warner Cable Enterprises Llc Apparatus and methods for content transfer protection
US9602864B2 (en) 2009-06-08 2017-03-21 Time Warner Cable Enterprises Llc Media bridge apparatus and methods
US9674224B2 (en) 2007-01-24 2017-06-06 Time Warner Cable Enterprises Llc Apparatus and methods for provisioning in a download-enabled system
US9742768B2 (en) 2006-11-01 2017-08-22 Time Warner Cable Enterprises Llc Methods and apparatus for premises content distribution

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04102185A (en) * 1990-08-21 1992-04-03 N T T Data Tsushin Kk Secret key control method for ic card
JPH09307543A (en) * 1996-05-14 1997-11-28 Matsushita Electric Ind Co Ltd Book data reproduction method and device
JPH1040172A (en) * 1996-07-25 1998-02-13 Toshiba Corp Computer system and data transfer method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04102185A (en) * 1990-08-21 1992-04-03 N T T Data Tsushin Kk Secret key control method for ic card
JPH09307543A (en) * 1996-05-14 1997-11-28 Matsushita Electric Ind Co Ltd Book data reproduction method and device
JPH1040172A (en) * 1996-07-25 1998-02-13 Toshiba Corp Computer system and data transfer method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Kogata memory card de ongaku chosakuken wo mamoru", NIKKEI ELECTRONICS, no. 739, 22 March 1999 (1999-03-22), pages 49 - 53, XP002942132 *
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 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7752461B2 (en) 2002-01-15 2010-07-06 Sanyo Electric Co., Ltd. Storage apparatus that can properly recommence input and output of classified data
US7716746B2 (en) 2002-03-05 2010-05-11 Sanyo Electric Co., Ltd. Data storing device for classified data
US7650328B2 (en) 2002-07-25 2010-01-19 Sanyo Electric Co., Ltd. Data storage device capable of storing multiple sets of history information on input/output processing of security data without duplication
US7810162B2 (en) 2004-03-29 2010-10-05 Samsung 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
JP2007531149A (en) * 2004-03-29 2007-11-01 サムスン エレクトロニクス カンパニー リミテッド A content reproducing method and apparatus using the digital rights management between portable storage and a device, a portable storage device for this
US9313530B2 (en) 2004-07-20 2016-04-12 Time Warner Cable Enterprises Llc Technique for securely communicating programming content
US9083513B2 (en) 2004-07-20 2015-07-14 Time Warner Cable Enterprises Llc Technique for securely communicating and storing programming material in a trusted domain
JP2008523725A (en) * 2004-12-07 2008-07-03 コムキャスト ケーブル ホールディングス,エルエルシー Technology for communicating the program content safely
JP4853930B2 (en) * 2004-12-07 2012-01-11 コムキャスト ケーブル ホールディングス,エルエルシー Technology for communicating the program content safely
JP2011239454A (en) * 2004-12-07 2011-11-24 Comcast Cable Holdings Llc Technique for securely communicating programming content
US9313458B2 (en) 2006-10-20 2016-04-12 Time Warner Cable Enterprises Llc Downloadable security and protection methods and apparatus
US9742768B2 (en) 2006-11-01 2017-08-22 Time Warner Cable Enterprises Llc Methods and apparatus for premises content distribution
US9674224B2 (en) 2007-01-24 2017-06-06 Time Warner Cable Enterprises Llc Apparatus and methods for provisioning in a download-enabled system
JP2008236089A (en) * 2007-03-16 2008-10-02 Ricoh Co Ltd Encryption key recovery method, information processor, and encryption key restoration program
US9749677B2 (en) 2009-06-08 2017-08-29 Time Warner Cable Enterprises Llc Media bridge apparatus and methods
US9602864B2 (en) 2009-06-08 2017-03-21 Time Warner Cable Enterprises Llc Media bridge apparatus and methods
US9565472B2 (en) 2012-12-10 2017-02-07 Time Warner Cable Enterprises Llc Apparatus and methods for content transfer protection
US9369278B2 (en) 2013-03-22 2016-06-14 Hitachi, Ltd. Method for maintenance or exchange of encryption function in storage system and storage device
WO2014147836A1 (en) * 2013-03-22 2014-09-25 株式会社日立製作所 Maintenance and replacement method for encryption function in storage system, and storage device

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