DE69526310D1 - Verfahren und Anlage zur Verhinderung von Kopien für digitales magnetisches Aufnahme-/Wiedergabesystem - Google Patents

Verfahren und Anlage zur Verhinderung von Kopien für digitales magnetisches Aufnahme-/Wiedergabesystem

Info

Publication number
DE69526310D1
DE69526310D1 DE69526310T DE69526310T DE69526310D1 DE 69526310 D1 DE69526310 D1 DE 69526310D1 DE 69526310 T DE69526310 T DE 69526310T DE 69526310 T DE69526310 T DE 69526310T DE 69526310 D1 DE69526310 D1 DE 69526310D1
Authority
DE
Germany
Prior art keywords
magnetic recording
reproducing system
prevention method
digital magnetic
copy prevention
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.)
Expired - Lifetime
Application number
DE69526310T
Other languages
English (en)
Other versions
DE69526310T2 (de
Inventor
Tae Joon Park
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19400751&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69526310(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of DE69526310D1 publication Critical patent/DE69526310D1/de
Application granted granted Critical
Publication of DE69526310T2 publication Critical patent/DE69526310T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • 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
    • G11B20/10—Digital recording or reproducing
    • 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
    • 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
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • 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
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
    • G11B20/00333—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in header data, e.g. in sector headers
    • 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
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
    • G11B20/00557—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein further management data is encrypted, e.g. sector headers, TOC or the lead-in or lead-out areas
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
    • 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
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Technology Law (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
DE69526310T 1994-12-08 1995-12-01 Verfahren und Anlage zur Verhinderung von Kopien für digitales magnetisches Aufnahme-/Wiedergabesystem Expired - Lifetime DE69526310T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940033336A KR0136458B1 (ko) 1994-12-08 1994-12-08 디지탈 자기 기록재생 시스템의 복사 방지장치

Publications (2)

Publication Number Publication Date
DE69526310D1 true DE69526310D1 (de) 2002-05-16
DE69526310T2 DE69526310T2 (de) 2002-10-02

Family

ID=19400751

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69526310T Expired - Lifetime DE69526310T2 (de) 1994-12-08 1995-12-01 Verfahren und Anlage zur Verhinderung von Kopien für digitales magnetisches Aufnahme-/Wiedergabesystem

Country Status (6)

Country Link
US (7) US5689559A (de)
EP (1) EP0716544B1 (de)
JP (1) JP3105777B2 (de)
KR (1) KR0136458B1 (de)
CN (1) CN1074888C (de)
DE (1) DE69526310T2 (de)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266654B1 (en) * 1992-12-15 2001-07-24 Softlock.Com, Inc. Method for tracking software lineage
US7089212B2 (en) 1992-12-15 2006-08-08 Sl Patent Holdings Llc System and method for controlling access to protected information
US7831516B2 (en) 1992-12-15 2010-11-09 Sl Patent Holdings Llc System and method for redistributing and licensing access to protected information among a plurality of devices
US5748763A (en) * 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US6560349B1 (en) 1994-10-21 2003-05-06 Digimarc Corporation Audio monitoring using steganographic information
KR0152788B1 (ko) 1994-11-26 1998-10-15 이헌조 디지탈 영상 시스템의 복사 방지 방법 및 장치
KR0136458B1 (ko) 1994-12-08 1998-05-15 구자홍 디지탈 자기 기록재생 시스템의 복사 방지장치
CN100452071C (zh) * 1995-02-13 2009-01-14 英特特拉斯特技术公司 用于安全交易管理和电子权利保护的系统和方法
US6516064B1 (en) * 1995-07-25 2003-02-04 Sony Corporation Signal recording apparatus, signal record medium and signal reproducing apparatus
US6687828B1 (en) 1995-08-11 2004-02-03 Sony Corporation Method and apparatus for ciphering playback mode information for recording on record medium
JP4518574B2 (ja) * 1995-08-11 2010-08-04 ソニー株式会社 記録方法及び装置、記録媒体、並びに再生方法及び装置
EP0800745B1 (de) * 1995-10-31 2003-09-17 Koninklijke Philips Electronics N.V. Zeitverschobener bedingter zugang
US5719937A (en) * 1995-12-06 1998-02-17 Solana Technology Develpment Corporation Multi-media copy management system
JPH09297798A (ja) * 1996-05-08 1997-11-18 Matsushita Electric Ind Co Ltd マルチメディア機器のコピー防止装置
US7221853B1 (en) * 1996-09-05 2007-05-22 Sony Corporation Digital recording apparatus and copyright protection method thereof
JP3941178B2 (ja) 1996-09-05 2007-07-04 ソニー株式会社 記録媒体、デジタル記録機器、及び制御用ｉｃ
US6298196B1 (en) 1996-09-05 2001-10-02 Sony Corporation Digital recording apparatus and copyright protection method thereof
JPH1093914A (ja) * 1996-09-18 1998-04-10 Sony Corp データ伝送方法、データ送信装置、データ受信装置のパラメータ設定方法、データ受信装置、データ伝送システム、再生方法、及び再生装置
FR2751771B1 (fr) * 1996-10-31 1999-01-15 Thomson Multimedia Sa Support autonome d'information contenant une information embrouillee
DE69739787D1 (de) * 1996-12-19 2010-04-08 Panasonic Corp Verfahren zur Aufnahme von einmalig beschreibbaren Informationen auf eine optische Platte.
KR20000064791A (ko) * 1997-01-27 2000-11-06 엠. 제이. 엠. 반 캄 콘텐트 정보 및 그것과 관련된 추가정보를전송하는 방법 및 시스템
JPH10247362A (ja) * 1997-03-06 1998-09-14 Sony Corp 情報信号複製防止方法および情報信号複製防止装置
US6792538B1 (en) 1997-09-05 2004-09-14 Pioneer Electronic Corporation Information generating method and apparatus, information reproducing method and apparatus, and information record medium
EP0901122B1 (de) * 1997-09-05 2006-06-14 Pioneer Electronic Corporation Informationserzeugungs- und -wiedergabeverfahren und -gerät sowie Informationsaufzeichnungsmedium
FR2770675B1 (fr) * 1997-11-06 1999-12-31 Aeta Applic Electroniques Tech Dispositif de decodage d'un signal audionumerique susceptible d'une ecoute satisfaisante selon des criteres acoustiques choisis
US6278807B1 (en) * 1997-11-13 2001-08-21 Kabushiki Kaisha Toshiba Data recording/reproducing apparatus, data recording/reproducing method applied to the apparatus, and computer program product used in data processing apparatus
JP4106740B2 (ja) 1998-02-18 2008-06-25 ソニー株式会社 情報記録装置および方法、情報再生装置および方法、並びにプログラム記録媒体
US6643451B1 (en) * 1998-03-25 2003-11-04 Sanyo Electric Co., Ltd Image data alteration preventing apparatus and alteration preventing method
US6137952A (en) * 1998-04-02 2000-10-24 Hewlett-Packard Company Apparatus and method for degrading the quality of unauthorized copies of color images and video sequences
JP3097655B2 (ja) 1998-05-11 2000-10-10 日本電気株式会社 データ伝送方式
JP2000021085A (ja) * 1998-06-30 2000-01-21 Pioneer Electron Corp 暗号化装置及び記録媒体
WO2000004549A2 (en) * 1998-07-14 2000-01-27 Koninklijke Philips Electronics N.V. Copy protection by ticket encryption
US6530021B1 (en) 1998-07-20 2003-03-04 Koninklijke Philips Electronics N.V. Method and system for preventing unauthorized playback of broadcasted digital data streams
US6931531B1 (en) * 1998-09-02 2005-08-16 Matsushita Electric Industrial Co., Ltd. Image object recording, compression, and encryption method and system
US6490686B1 (en) * 1998-10-05 2002-12-03 Ati International Srl Method and apparatus for restricting privilege access to distributed content information
CN1303599C (zh) 1998-11-02 2007-03-07 松下电器产业株式会社 高速缓存设备
EP1473721B1 (de) * 1998-12-11 2015-07-15 Sony Corporation Technik zur Datenkopiersteuerung
KR100575817B1 (ko) * 1998-12-31 2006-08-31 엘지전자 주식회사 디지탈데이터의복사방지장치
JP4131071B2 (ja) * 1999-01-11 2008-08-13 ソニー株式会社 情報信号の記録装置、記録システム、記録媒体および記録方法
US6963884B1 (en) * 1999-03-10 2005-11-08 Digimarc Corporation Recoverable digital content degradation: method and apparatus
US6847949B1 (en) 1999-05-10 2005-01-25 Koninklijke Philips Electronics N.V. Indicator system for screening protected material
US6697489B1 (en) * 1999-03-30 2004-02-24 Sony Corporation Method and apparatus for securing control words
JP2000322825A (ja) * 1999-05-13 2000-11-24 Hitachi Ltd ディジタル信号記録装置
JP2001057022A (ja) * 1999-08-18 2001-02-27 Sony Corp データ記録媒体、データ記録装置、データ記録方法、データ再生装置およびデータ再生方法
EP2104100A3 (de) * 1999-09-30 2012-02-22 Panasonic Corporation Informationsaufzeichnungsmedium zur Aufzeichnung eines verschlüsselten Teils von Inhaltsinformationen , und Verfahren und Gerät zur Wiedergabe von darauf aufgezeichneten Informationen
EP1094463A2 (de) * 1999-10-21 2001-04-25 Matsushita Electric Industrial Co., Ltd. Datenaufzeichnungsgerät, Medium und Informationspaket
EP1256950A4 (de) * 1999-12-28 2011-03-16 Panasonic Corp Aufzeichnungsvorrichtung, wiedergabevorrichtung, datenverarbeitungsvorrichtung, aufzeichnungs-/wiedergabevorrichtung und datenübertragungsvorrichtung
US6898038B1 (en) * 2000-03-15 2005-05-24 Seagate Technology, Llc Method and apparatus for disc drive data security using fields in servo wedges
ES2315219T3 (es) * 2000-04-07 2009-04-01 Irdeto Access B.V. Sistema de cifrado y descifrado de datos.
ES2220746T3 (es) * 2000-04-17 2004-12-16 Nagravision S.A. Sistema y metodo de transmision segura de datos.
JP3818021B2 (ja) * 2000-06-06 2006-09-06 日本ビクター株式会社 コントロールワード暗号化装置及びコントロールワード復号装置
JP2004510192A (ja) * 2000-09-20 2004-04-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ コンテンツの配信
JP3804856B2 (ja) * 2000-11-30 2006-08-02 日本ビクター株式会社 ダビングシステム
JP2002262254A (ja) * 2001-03-06 2002-09-13 Nec Microsystems Ltd 動画像再生装置及びその方法
JP2003122726A (ja) * 2001-06-07 2003-04-25 Hitachi Ltd コンテンツ制御方法及びその実施装置並びにその処理プログラム
JP2003018565A (ja) * 2001-06-28 2003-01-17 Pioneer Electronic Corp 映像信号伝送装置
TW566041B (en) * 2001-07-06 2003-12-11 Hitachi Ltd Digital data recording device and output device
US20030138201A1 (en) * 2002-01-18 2003-07-24 Cabot Microelectronics Corp. Self-aligned lens formed on a single mode optical fiber using CMP and thin film deposition
TWI244645B (en) 2002-01-28 2005-12-01 Sony Corp Information recording apparatus and method, information reproduction apparatus and method, information recording medium, program storage medium
US7356147B2 (en) * 2002-04-18 2008-04-08 International Business Machines Corporation Method, system and program product for attaching a title key to encrypted content for synchronized transmission to a recipient
US20040007690A1 (en) * 2002-07-12 2004-01-15 Cabot Microelectronics Corp. Methods for polishing fiber optic connectors
US7398008B2 (en) * 2002-09-19 2008-07-08 Hewlett-Packard Development Company, L.P. Copy protection for analog video signals from computing devices
US7224310B2 (en) * 2002-11-20 2007-05-29 Nagravision S.A. Method and device for the recognition of the origin of encrypted data broadcasting
WO2006110001A1 (en) * 2005-04-13 2006-10-19 Samsung Electronics Co., Ltd. Method of packaging broadcast contents
KR100762957B1 (ko) * 2005-07-19 2007-10-04 삼성전자주식회사 ＡＶ(Ａｕｄｉｏ Ｖｉｓｕａｌ) 스트림을 디스크램블하는방법 및 장치
EP2276027A3 (de) 2005-07-19 2012-03-14 Samsung Electronics Co., Ltd. Verfahren und Vorrichtung für einen verschlüsselten Inhaltsteil
IL179351A0 (en) * 2006-11-16 2008-01-20 Nds Ltd System for embedding data
JP4536091B2 (ja) * 2007-07-30 2010-09-01 日本放送協会 限定受信方式の処理装置及び処理方法
JP4536092B2 (ja) * 2007-07-30 2010-09-01 日本放送協会 限定受信方式の処理装置
US9031241B2 (en) * 2009-02-05 2015-05-12 D.E. Shaw Research, Llc Link and physical coding sub-layer protocols
US8555332B2 (en) 2010-08-20 2013-10-08 At&T Intellectual Property I, L.P. System for establishing communications with a mobile device server
US8438285B2 (en) 2010-09-15 2013-05-07 At&T Intellectual Property I, L.P. System for managing resources accessible to a mobile device server
US8504449B2 (en) 2010-10-01 2013-08-06 At&T Intellectual Property I, L.P. Apparatus and method for managing software applications of a mobile device server
US8478905B2 (en) 2010-10-01 2013-07-02 At&T Intellectual Property I, Lp System for synchronizing to a mobile device server
US8516039B2 (en) 2010-10-01 2013-08-20 At&T Intellectual Property I, L.P. Apparatus and method for managing mobile device servers
US8989055B2 (en) 2011-07-17 2015-03-24 At&T Intellectual Property I, L.P. Processing messages with a device server operating in a telephone
US8443420B2 (en) * 2010-10-01 2013-05-14 At&T Intellectual Property I, L.P. System for communicating with a mobile device server
US9392316B2 (en) 2010-10-28 2016-07-12 At&T Intellectual Property I, L.P. Messaging abstraction in a mobile device server
US9066123B2 (en) 2010-11-30 2015-06-23 At&T Intellectual Property I, L.P. System for monetizing resources accessible to a mobile device server
US9462332B2 (en) 2012-12-05 2016-10-04 At&T Intellectual Property I, L.P. Method and apparatus for controlling a media device
JP6539379B1 (ja) * 2018-05-02 2019-07-03 日機装株式会社 エアトラップチャンバ及び体外循環回路
US11863513B2 (en) 2020-08-31 2024-01-02 Snap Inc. Media content playback and comments management
US11470025B2 (en) 2020-09-21 2022-10-11 Snap Inc. Chats with micro sound clips
US11636654B2 (en) 2021-05-19 2023-04-25 Snap Inc. AR-based connected portal shopping
US11983462B2 (en) 2021-08-31 2024-05-14 Snap Inc. Conversation guided augmented reality experience
US11880947B2 (en) 2021-12-21 2024-01-23 Snap Inc. Real-time upper-body garment exchange
US11870745B1 (en) 2022-06-28 2024-01-09 Snap Inc. Media gallery sharing and management
US11893166B1 (en) 2022-11-08 2024-02-06 Snap Inc. User avatar movement control using an augmented reality eyewear device

Family Cites Families (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753228A (en) 1971-12-29 1973-08-14 Westinghouse Air Brake Co Synchronizing arrangement for digital data transmission systems
US4420829A (en) 1981-01-08 1983-12-13 Carlson John E Holographic system for the storage of audio, video and computer data
USRE33189E (en) 1981-11-19 1990-03-27 Communications Satellite Corporation Security system for SSTV encryption
JPS59117395A (ja) 1982-12-24 1984-07-06 Hitachi Ltd 端末処理装置
EP0148235B1 (de) 1983-06-30 1988-10-05 Independent Broadcasting Authority Chiffriertes fernsehrundfunksystem
WO1985000718A1 (en) 1983-07-22 1985-02-14 Independent Broadcasting Authority Security system for television signal encryption
US4694489A (en) * 1983-12-22 1987-09-15 Frederiksen Jeffrey E Video transmission system
US4890319A (en) * 1984-09-21 1989-12-26 Scientific-Atlantic, Inc. Method for controlling copying of protected information transmitted over a communications link
GB2180127B (en) 1985-09-04 1989-08-23 Philips Electronic Associated Method of data communication
US4937679A (en) 1986-08-11 1990-06-26 Macrovision Dual deck video recording apparatus having enhanced copy protection and method for providing enhanced copy protection to such a recording apparatus
US4817140A (en) 1986-11-05 1989-03-28 International Business Machines Corp. Software protection system using a single-key cryptosystem, a hardware-based authorization system and a secure coprocessor
US5109413A (en) 1986-11-05 1992-04-28 International Business Machines Corporation Manipulating rights-to-execute in connection with a software copy protection mechanism
EP0267039A3 (de) * 1986-11-05 1990-04-04 Satellite Technology Services, Inc. Videosystem und Verfahren für das Überwachte Aufnehmen von Videosignalen
US4916738A (en) 1986-11-05 1990-04-10 International Business Machines Corp. Remote access terminal security
US4796220A (en) 1986-12-15 1989-01-03 Pride Software Development Corp. Method of controlling the copying of software
EP0297539B1 (de) 1987-06-30 1993-09-01 Kabushiki Kaisha Toshiba Aufzeichnungssteuergerät
DE3851724T2 (de) 1987-07-08 1995-05-04 Matsushita Electric Ind Co Ltd Verfahren und Gerät zum Schutz von Kopiersignalen.
US4999806A (en) 1987-09-04 1991-03-12 Fred Chernow Software distribution system
US4924513A (en) 1987-09-25 1990-05-08 Digital Equipment Corporation Apparatus and method for secure transmission of data over an unsecure transmission channel
US5231546A (en) * 1988-02-10 1993-07-27 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus with limited digital copying
US5057947A (en) * 1988-02-10 1991-10-15 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus with limited digital copying
JPH0823971B2 (ja) 1988-04-08 1996-03-06 日本ビクター株式会社 符号訂正装置
US4914694A (en) 1988-04-11 1990-04-03 Eidak Corporation Modifying a television signal to inhibit recording/reproduction
US4871140A (en) 1988-05-20 1989-10-03 Moore Push-Pin Company Hanging device
FR2643529B1 (fr) 1989-02-22 1991-06-07 Kudelski Sa Fabr Enregistr Nag Systeme de television a peage utilisant une carte a memoire associee a un decodeur
GB8904912D0 (en) 1989-03-03 1989-04-12 Carlyle Investments Limited Telephone support device
US5907443A (en) 1990-05-30 1999-05-25 Canon Kabushiki Kaisha Recording and reproducing apparatus adapted to selectively control the number of copies made
US5034985A (en) 1989-11-13 1991-07-23 Pitney Bowes Inc. Matched mailing system employing address print array recognition
JPH0727715B2 (ja) 1989-11-24 1995-03-29 シャープ株式会社 ディジタルオーディオインターフェイス信号中継装置
US5003590A (en) 1989-12-18 1991-03-26 Eidak Corporation Encoding an optical video disc to inhibit video tape recording
JPH03214834A (ja) 1990-01-19 1991-09-20 Canon Inc マルチメデイアネツトワークシステム
JP2751533B2 (ja) 1990-02-26 1998-05-18 ソニー株式会社 記録制御装置
SE464271B (sv) * 1990-03-23 1991-03-25 Televerket Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve
US5054064A (en) 1990-03-29 1991-10-01 Gte Laboratories Incorporated Video control system for recorded programs
US5058162A (en) 1990-08-09 1991-10-15 Hewlett-Packard Company Method of distributing computer data files
US5193176A (en) 1990-10-17 1993-03-09 Powercard Supply C.A. Computer work saving during power interruption
DE69225346T2 (de) * 1991-02-07 1998-09-03 Matsushita Electric Ind Co Ltd Verfahren und Vorrichtung zur Übertragung und Reproduktion von einem digitalen Signal
JPH04278262A (ja) 1991-03-05 1992-10-02 Sony Corp ディジタル信号記録再生装置
US5138659A (en) 1991-05-02 1992-08-11 General Instrument Corporation Conversion of television signal formats with retention of common control data stream
US5303294A (en) 1991-06-18 1994-04-12 Matsushita Electric Industrial Co., Ltd. Video theater system and copy preventive method
US5260999A (en) 1991-06-28 1993-11-09 Digital Equipment Corporation Filters in license management system
US5265164A (en) 1991-10-31 1993-11-23 International Business Machines Corporation Cryptographic facility environment backup/restore and replication in a public key cryptosystem
JP3341291B2 (ja) 1991-11-22 2002-11-05 ソニー株式会社 受信装置
US5956505A (en) 1991-12-24 1999-09-21 Pitney Bowes Inc. Remote activation of software features in a data processing device
JP3073590B2 (ja) 1992-03-16 2000-08-07 富士通株式会社 電子化データ保護システム、使用許諾者側装置および使用者側装置
JPH0670282A (ja) 1992-06-16 1994-03-11 Matsushita Electric Ind Co Ltd 映像信号記録再生装置
US5289276A (en) 1992-06-19 1994-02-22 General Electric Company Method and apparatus for conveying compressed video data over a noisy communication channel
EP0582122B1 (de) * 1992-07-21 1999-03-24 Matsushita Electric Industrial Co., Ltd. Ver- und Entschlüsselungsvorrichtung
JPH0644755A (ja) 1992-07-24 1994-02-18 Sony Corp ビデオ信号の伝送方法及び記録装置
JP3217137B2 (ja) * 1992-07-28 2001-10-09 株式会社日立製作所 映像信号記録装置、再生装置及び伝送装置
US5590306A (en) 1992-09-08 1996-12-31 Fuji Photo Film Co., Ltd. Memory card management system for writing data with usage and recording codes made significant
JP3010930B2 (ja) * 1992-09-24 2000-02-21 松下電器産業株式会社 記録再生装置
JP3303368B2 (ja) 1992-11-20 2002-07-22 ソニー株式会社 伝送装置及び方法、伝送システム
US5477276A (en) 1992-12-17 1995-12-19 Sony Corporation Digital signal processing apparatus for achieving fade-in and fade-out effects on digital video signals
JP3194638B2 (ja) 1993-01-07 2001-07-30 ペルメレック電極株式会社 液中推進装置
US5315448A (en) 1993-03-18 1994-05-24 Macrovision Corporation Copy protection for hybrid digital video tape recording and unprotected source material
FR2703552A1 (fr) 1993-03-31 1994-10-07 Philips Electronics Nv Procédé et dispositif pour l'embrouillage et le désembrouillage d'une émission déterminée de télévision.
JP3250333B2 (ja) 1993-04-02 2002-01-28 ソニー株式会社 映像信号処理方法、映像信号記録方法、映像信号再生方法、映像信号処理装置、映像信号記録装置及び映像信号再生装置
US5757910A (en) 1993-04-06 1998-05-26 Goldstar Co., Ltd. Apparatus for preventing illegal copying of a digital broadcasting signal
JP3581377B2 (ja) * 1993-04-06 2004-10-27 ソニー株式会社 ディジタル多重伝送方法と装置
KR0184313B1 (ko) 1993-04-09 1999-05-01 모리시타 요이찌 디지털영상신호를 스크램블 및 디스크램블해서 전송하는 스크램블전송장치
US5442541A (en) 1993-07-23 1995-08-15 Xerox Corporation Enabling features over common communication channel
US5381481A (en) * 1993-08-04 1995-01-10 Scientific-Atlanta, Inc. Method and apparatus for uniquely encrypting a plurality of services at a transmission site
FR2710223A1 (fr) * 1993-09-15 1995-03-24 Philips Electronics Nv Procédé pour l'embrouillage et le désembrouillage en télévision, et émetteur et récepteur utilisant ce procédé.
US5464404A (en) * 1993-09-20 1995-11-07 Abela Laser Systems, Inc. Cardiac ablation catheters and method
US5646992A (en) 1993-09-23 1997-07-08 Digital Delivery, Inc. Assembly, distribution, and use of digital information
JP3500671B2 (ja) 1993-10-08 2004-02-23 ソニー株式会社 ディジタル画像信号の記録及び／又は再生方法、記録及び／又は再生装置及び記録媒体
US5576843A (en) 1993-10-29 1996-11-19 Time Warner Entertainment Co., L.P. System and method for controlling play of multiple dialog audio tracks of a software carrier
JP2927163B2 (ja) 1993-11-30 1999-07-28 日本ビクター株式会社 情報信号記録方法及び情報信号記録装置
US5583562A (en) 1993-12-03 1996-12-10 Scientific-Atlanta, Inc. System and method for transmitting a plurality of digital services including imaging services
US5495411A (en) 1993-12-22 1996-02-27 Ananda; Mohan Secure software rental system using continuous asynchronous password verification
US5504816A (en) 1994-02-02 1996-04-02 Gi Corporation Method and apparatus for controlling access to digital signals
JP3321972B2 (ja) * 1994-02-15 2002-09-09 ソニー株式会社 ディジタル信号記録装置
US5881038A (en) 1994-04-18 1999-03-09 Matsushita Electric Industrial Co., Ltd. Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium
US5563946A (en) 1994-04-25 1996-10-08 International Business Machines Corporation Method and apparatus for enabling trial period use of software products: method and apparatus for passing encrypted files between data processing systems
US5659613A (en) 1994-06-29 1997-08-19 Macrovision Corporation Method and apparatus for copy protection for various recording media using a video finger print
US5513260A (en) 1994-06-29 1996-04-30 Macrovision Corporation Method and apparatus for copy protection for various recording media
US5574787A (en) * 1994-07-25 1996-11-12 Ryan; John O. Apparatus and method for comprehensive copy protection for video platforms and unprotected source material
US5715403A (en) 1994-11-23 1998-02-03 Xerox Corporation System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar
US5629980A (en) 1994-11-23 1997-05-13 Xerox Corporation System for controlling the distribution and use of digital works
JPH08263438A (ja) 1994-11-23 1996-10-11 Xerox Corp ディジタルワークの配給及び使用制御システム並びにディジタルワークへのアクセス制御方法
KR0152788B1 (ko) 1994-11-26 1998-10-15 이헌조 디지탈 영상 시스템의 복사 방지 방법 및 장치
KR100332743B1 (ko) 1994-11-26 2002-11-07 엘지전자주식회사 디지탈영상시스템의불법시청및복사방지방법및장치
KR0136458B1 (ko) 1994-12-08 1998-05-15 구자홍 디지탈 자기 기록재생 시스템의 복사 방지장치
CN100452071C (zh) 1995-02-13 2009-01-14 英特特拉斯特技术公司 用于安全交易管理和电子权利保护的系统和方法
DE69631393T2 (de) 1995-03-29 2004-10-21 Hitachi Ltd Dekoder für komprimierte und multiplexierte Bild- und Audiodaten
JP3617115B2 (ja) 1995-03-31 2005-02-02 ソニー株式会社 ビデオ信号処理装置および処理方法
US5703859A (en) 1995-09-01 1997-12-30 Sony Corporation Digital video copy protection system
KR0166923B1 (ko) * 1995-09-18 1999-03-20 구자홍 디지탈 방송 시스템의 불법 시청 및 복사 방지방법 및 장치
US5689561A (en) 1995-10-06 1997-11-18 Pace; Michael Computer-based trading card system and method
KR0186210B1 (ko) 1995-11-10 1999-04-15 구자홍 디지탈 데이터의 저작권 보호와 변속 재생을 위한 자기 기록 테이프의 기록방법
US5790664A (en) 1996-02-26 1998-08-04 Network Engineering Software, Inc. Automated system for management of licensed software
US5925127A (en) 1997-04-09 1999-07-20 Microsoft Corporation Method and system for monitoring the use of rented software
CN1179566C (zh) 1998-01-23 2004-12-08 皇家菲利浦电子有限公司 条件性接入
US6009401A (en) 1998-04-06 1999-12-28 Preview Systems, Inc. Relicensing of electronically purchased software
US7069250B2 (en) 2001-10-15 2006-06-27 Payformance Corporation Check based online payment and verification system and method
DE20219124U1 (de) 2002-12-10 2003-04-17 Trw Automotive Safety Sys Gmbh Kontrollsystem für Rastverbindungen

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CN1074888C (zh) 2001-11-14
USRE44121E1 (en) 2013-04-02
EP0716544A2 (de) 1996-06-12
KR0136458B1 (ko) 1998-05-15
JPH08237596A (ja) 1996-09-13
DE69526310T2 (de) 2002-10-02
KR960025595A (ko) 1996-07-20
EP0716544A3 (de) 1997-06-18
CN1131796A (zh) 1996-09-25
USRE43993E1 (en) 2013-02-12
US5689559A (en) 1997-11-18
USRE44068E1 (en) 2013-03-12
USRE44106E1 (en) 2013-03-26
EP0716544B1 (de) 2002-04-10
USRE36919E (en) 2000-10-17
JP3105777B2 (ja) 2000-11-06

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