WO2004081744A2 - Content protection for digital recording - Google Patents

Content protection for digital recording Download PDF

Info

Publication number
WO2004081744A2
WO2004081744A2 PCT/US2004/007276 US2004007276W WO2004081744A2 WO 2004081744 A2 WO2004081744 A2 WO 2004081744A2 US 2004007276 W US2004007276 W US 2004007276W WO 2004081744 A2 WO2004081744 A2 WO 2004081744A2
Authority
WO
WIPO (PCT)
Prior art keywords
digital
signal receiving
receiving apparatus
encrypted
key
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2004/007276
Other languages
English (en)
French (fr)
Other versions
WO2004081744A3 (en
Inventor
Douglas Edward Lankford
Keith Reynolds Wehmeyer
Mike Arthur Derrenberger
Kevin Elliott Bridgewater
Thomas Edward Horlander
Russell W. Perkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Licensing SAS
Original Assignee
Thomson Licensing SAS
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
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Priority to US10/548,769 priority Critical patent/US20060222330A1/en
Priority to BRPI0408196-0A priority patent/BRPI0408196A/pt
Priority to EP04719239.8A priority patent/EP1602228B1/en
Priority to KR1020057016900A priority patent/KR101123997B1/ko
Priority to JP2006507028A priority patent/JP4707114B2/ja
Publication of WO2004081744A2 publication Critical patent/WO2004081744A2/en
Publication of WO2004081744A3 publication Critical patent/WO2004081744A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4135—Peripherals receiving signals from specially adapted client devices external recorder
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/781—Television signal recording using magnetic recording on disks or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape

Definitions

  • the signal receiving apparatus comprises input means for receiving signals including specific digital content, memory means for storing a digital key assigned to the signal receiving apparatus and the specific digital content, encryption means for encrypting the specific digital content using the digital key to generate encrypted digital data, and output means for outputting the encrypted digital data to a recording apparatus.
  • Signal receiving apparatus 10 is operative to perform various functions including signal receiving and encryption/decryption functions. As indicated in FIG. 1 , signal receiving apparatus 10 comprises input means such as input terminal 12, memory means such as memory 14, encryption/decryption (E/D) means such as E/D module 16, and input/output means such as input/output terminal 18.
  • Signal receiving apparatus 10 may be embodied as a device such as a television signal receiver, or a portion thereof. Accordingly, signal receiving apparatus 10 may also include elements such as a tuner, demodulator, processor(s), memory and/or other elements that are not expressly shown in FIG. 1 for clarity of description. Additionally, other conventional elements associated with signal receiving apparatus 10 such as signal transmission lines, control signals, power signals and/or other elements may not be shown in FIG. 1.
  • the one or more digital keys stored in memory 14 are assigned to signal receiving apparatus 10.
  • the assigned digital keys are preferably unique, so that digital data encrypted using the digital key(s) can only be decrypted using signal receiving apparatus 10.
  • a particular digital key may be linked to specific content, such as a particular television broadcast program. For example, a particular digital key may be downloaded to signal receiving apparatus 10 and stored in memory 14 prior to when a particular television broadcast program is aired. E/D module 16 may then use the particular digital key to generate encrypted digital data corresponding to the particular television broadcast program which is output via input/output terminal 18 to digital recording apparatus 30 for recording. The encrypted digital data corresponding to the particular television broadcast program may later be retrieved from digital recording apparatus 30, and can only be decrypted by signal receiving apparatus 10.
  • Such content-specific digital keys may be downloaded to signal receiving apparatus 10 on a periodic basis (e.g., to support a unidirectional broadcast environment), and/or may be consumed or disregarded by signal receiving apparatus 10 on an as needed basis.
  • digital recording apparatus 30 provides the encrypted digital data to signal receiving apparatus 10 for decryption via E/D module 16, and subsequent reproduction.
  • the encrypted digital data may be provided to signal receiving apparatus 10 at step 540 via a digital serial bus, such as any version of the USB and/or other type of connection.
  • the present invention provides a digital recording technique, which provides content protection through the use of digital keys that are unique to specific devices and/or to devices associated with specific household and/or business dwellings.
  • the present invention may be applicable to various apparatuses, either with or without a display device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
PCT/US2004/007276 2003-03-11 2004-03-10 Content protection for digital recording Ceased WO2004081744A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/548,769 US20060222330A1 (en) 2003-03-11 2004-03-10 Content protection for digital recording
BRPI0408196-0A BRPI0408196A (pt) 2003-03-11 2004-03-10 proteção de conteúdo para gravação digital
EP04719239.8A EP1602228B1 (en) 2003-03-11 2004-03-10 Content protection for digital recording
KR1020057016900A KR101123997B1 (ko) 2003-03-11 2004-03-10 디지털 기록을 위한 콘텐츠 보호
JP2006507028A JP4707114B2 (ja) 2003-03-11 2004-03-10 ディジタル記録のためのコンテンツ保護

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US45376403P 2003-03-11 2003-03-11
US45366203P 2003-03-11 2003-03-11
US60/453,764 2003-03-11
US60/453,662 2003-03-11

Publications (2)

Publication Number Publication Date
WO2004081744A2 true WO2004081744A2 (en) 2004-09-23
WO2004081744A3 WO2004081744A3 (en) 2004-11-11

Family

ID=32994518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/007276 Ceased WO2004081744A2 (en) 2003-03-11 2004-03-10 Content protection for digital recording

Country Status (6)

Country Link
US (1) US20060222330A1 (enExample)
EP (1) EP1602228B1 (enExample)
JP (1) JP4707114B2 (enExample)
KR (1) KR101123997B1 (enExample)
BR (1) BRPI0408196A (enExample)
WO (1) WO2004081744A2 (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722567A1 (en) 2005-05-10 2006-11-15 Samsung Electronics Co., Ltd. Content management
EP2022268A4 (en) * 2006-05-10 2010-09-08 Lg Electronics Inc METHOD AND APPARATUS FOR RECORDING / REPRODUCING DATA BETWEEN AN EXTERNAL DEVICE AND A TELEVISION STATION
US8099609B2 (en) 2006-01-23 2012-01-17 Kabushiki Kaisha Toshiba Information processing apparatus and key recovery method
US8135076B2 (en) 2005-02-02 2012-03-13 Samsung Electronics Co., Ltd. Error concealment apparatus and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100745280B1 (ko) * 2005-12-16 2007-08-01 엘지전자 주식회사 방송 컨텐츠 보호 장치 및 방법
KR100745281B1 (ko) * 2005-12-16 2007-08-01 엘지전자 주식회사 방송 컨텐츠 보호 장치 및 방법
US8256005B2 (en) * 2007-01-08 2012-08-28 Apple Inc. Protection of audio or video data in a playback device
DE102019112119B4 (de) * 2019-05-09 2023-10-05 HIM solutions UG Ortsfest installierbare Adaptervorrichtung für ein Netzwerksystem

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US6026165A (en) * 1996-06-20 2000-02-15 Pittway Corporation Secure communications in a wireless system
JP3625983B2 (ja) * 1997-03-12 2005-03-02 三菱商事株式会社 データ管理システム
US6209097B1 (en) * 1997-12-05 2001-03-27 Tokyo Electron Device Limited Content protection method and content protection system
JP2000224562A (ja) * 1999-02-01 2000-08-11 Ntt Data Corp 放送系サービスシステム及び受信端末装置
JP4846155B2 (ja) * 1999-12-24 2011-12-28 富士通株式会社 情報記録／再生装置
US20040193900A1 (en) * 2000-03-17 2004-09-30 Mark Nair System, method and apparatus for controlling the dissemination of digital works
JP2001357001A (ja) * 2000-06-12 2001-12-26 Pioneer Electronic Corp 情報出力装置及び情報出力方法、情報記録装置及び情報記録方法、情報出力記録システム並びに情報記録媒体
JP4595182B2 (ja) * 2000-09-07 2010-12-08 ソニー株式会社 情報記録装置、情報再生装置、情報記録方法、情報再生方法、および情報記録媒体、並びにプログラム提供媒体
US6851055B1 (en) * 2000-09-30 2005-02-01 Keen Personal Technologies, Inc. Digital video recorder for encrypting/decrypting video programs in segments to facilitate trick play features
US6959090B1 (en) * 2000-11-20 2005-10-25 Nokia Corporation Content Protection scheme for a digital recording device
JP2002176419A (ja) * 2000-12-06 2002-06-21 Hitachi Ltd 権利保護方法
JP4029569B2 (ja) * 2000-12-13 2008-01-09 株式会社日立製作所 ディジタル情報記録再生装置、記録装置、受信装置および送信装置
JP2002229858A (ja) * 2001-01-30 2002-08-16 Matsushita Electric Ind Co Ltd コンピュータ、及びプログラム
JP3925095B2 (ja) * 2001-02-01 2007-06-06 株式会社日立製作所 データ受信装置
JP4288450B2 (ja) * 2001-02-28 2009-07-01 ソニー株式会社 情報記録装置、情報再生装置、情報記録再生装置および情報記録管理装置
JP2003008568A (ja) * 2001-02-28 2003-01-10 Matsushita Electric Ind Co Ltd 受信装置、受信方法及び受信プログラム並びに受信プログラムを記録したコンピュータ読み取り可能な記録媒体
JP4299976B2 (ja) * 2001-03-02 2009-07-22 株式会社日立製作所 ディジタル情報記録装置
JP4213899B2 (ja) * 2001-03-19 2009-01-21 パナソニック株式会社 記録媒体交換機能を有するデータ受信システム
JP2002344921A (ja) * 2001-05-21 2002-11-29 Fujitsu Ltd コンテンツ受信装置
US6748537B2 (en) * 2001-11-15 2004-06-08 Sony Corporation System and method for controlling the use and duplication of digital content distributed on removable media

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8135076B2 (en) 2005-02-02 2012-03-13 Samsung Electronics Co., Ltd. Error concealment apparatus and method
EP1722567A1 (en) 2005-05-10 2006-11-15 Samsung Electronics Co., Ltd. Content management
US9058837B2 (en) 2005-05-10 2015-06-16 Samsung Electronics Co., Ltd. Method and apparatus for managing contents
US8099609B2 (en) 2006-01-23 2012-01-17 Kabushiki Kaisha Toshiba Information processing apparatus and key recovery method
EP2022268A4 (en) * 2006-05-10 2010-09-08 Lg Electronics Inc METHOD AND APPARATUS FOR RECORDING / REPRODUCING DATA BETWEEN AN EXTERNAL DEVICE AND A TELEVISION STATION
US8320742B2 (en) 2006-05-10 2012-11-27 Lg Electronics Inc. Method and apparatus for playing data between external device and TV set

Also Published As

Publication number Publication date
KR101123997B1 (ko) 2012-03-23
US20060222330A1 (en) 2006-10-05
WO2004081744A3 (en) 2004-11-11
BRPI0408196A (pt) 2006-03-21
KR20050109079A (ko) 2005-11-17
EP1602228A2 (en) 2005-12-07
JP2006524006A (ja) 2006-10-19
EP1602228B1 (en) 2016-05-04
JP4707114B2 (ja) 2011-06-22

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