JP4134452B2 - ディジタルデータ再生及び記録装置並びに方法 - Google Patents

ディジタルデータ再生及び記録装置並びに方法 Download PDF

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Publication number
JP4134452B2
JP4134452B2 JP21386699A JP21386699A JP4134452B2 JP 4134452 B2 JP4134452 B2 JP 4134452B2 JP 21386699 A JP21386699 A JP 21386699A JP 21386699 A JP21386699 A JP 21386699A JP 4134452 B2 JP4134452 B2 JP 4134452B2
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JP
Japan
Prior art keywords
data
digital data
recording
digital
reproducing
Prior art date
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Expired - Fee Related
Application number
JP21386699A
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English (en)
Japanese (ja)
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JP2001042863A (ja
JP2001042863A5 (enExample
Inventor
好成 寺田
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.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP21386699A priority Critical patent/JP4134452B2/ja
Priority to US09/620,454 priority patent/US6950602B1/en
Publication of JP2001042863A publication Critical patent/JP2001042863A/ja
Publication of JP2001042863A5 publication Critical patent/JP2001042863A5/ja
Application granted granted Critical
Publication of JP4134452B2 publication Critical patent/JP4134452B2/ja
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    • 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
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
    • G10H1/0041—Recording/reproducing or transmission of music for electrophonic musical instruments in coded form
    • G10H1/0058—Transmission between separate instruments or between individual components of a musical system
    • G10H1/0066—Transmission between separate instruments or between individual components of a musical system using a MIDI interface
    • 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
    • G11B20/00731—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
    • G11B20/00797—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 times a content can be reproduced, e.g. using playback counters
    • 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
    • G11B20/00818—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 limits the signal quality, e.g. by low-pass filtering of audio signals or by reducing the resolution of video signals
    • G11B20/00826—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 limits the signal quality, e.g. by low-pass filtering of audio signals or by reducing the resolution of video signals wherein a spoiler signal is added to degrade the signal quality
    • 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
    • G11B20/0084—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 time or date
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Storage Device Security (AREA)
  • Information Transfer Between Computers (AREA)
  • Computer And Data Communications (AREA)
JP21386699A 1999-07-28 1999-07-28 ディジタルデータ再生及び記録装置並びに方法 Expired - Fee Related JP4134452B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP21386699A JP4134452B2 (ja) 1999-07-28 1999-07-28 ディジタルデータ再生及び記録装置並びに方法
US09/620,454 US6950602B1 (en) 1999-07-28 2000-07-20 Digital data reproducing and recording apparatus creating latent deterioration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21386699A JP4134452B2 (ja) 1999-07-28 1999-07-28 ディジタルデータ再生及び記録装置並びに方法

Publications (3)

Publication Number Publication Date
JP2001042863A JP2001042863A (ja) 2001-02-16
JP2001042863A5 JP2001042863A5 (enExample) 2006-02-23
JP4134452B2 true JP4134452B2 (ja) 2008-08-20

Family

ID=16646326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21386699A Expired - Fee Related JP4134452B2 (ja) 1999-07-28 1999-07-28 ディジタルデータ再生及び記録装置並びに方法

Country Status (2)

Country Link
US (1) US6950602B1 (enExample)
JP (1) JP4134452B2 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8145776B1 (en) * 1999-10-15 2012-03-27 Sony Corporation Service providing apparatus and method, and information processing apparatus and method as well as program storage medium
US7088823B2 (en) * 2002-01-09 2006-08-08 International Business Machines Corporation System and method for secure distribution and evaluation of compressed digital information
US7366975B1 (en) * 2003-04-05 2008-04-29 Apple Inc Method and apparatus for allowing a media client to obtain media data from a media server
US8180050B2 (en) 2006-04-26 2012-05-15 Dell Products L.P. System and method for self-decaying digital media files and for validated playback of same
JP5040850B2 (ja) * 2008-08-06 2012-10-03 富士通株式会社 画像管理装置、画像管理方法及びコンピュータプログラム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4575754A (en) * 1983-01-06 1986-03-11 Rca Corporation Video scrambler system
JPS60137190A (ja) * 1983-12-26 1985-07-20 Pioneer Electronic Corp Ｃａｔｖシステムにおけるスクランブル・デスクランブル方式
JPH05207465A (ja) * 1992-01-24 1993-08-13 Matsushita Electric Ind Co Ltd ビデオシアターシステムとビデオシアター再生装置
JP3587000B2 (ja) 1996-11-01 2004-11-10 ヤマハ株式会社 不正コピー防止システム、監視ノード及び送受信ノード
JPH1124895A (ja) 1997-06-27 1999-01-29 Yamaha Corp アプリケーションプログラムの起動方法
US6697566B2 (en) * 1997-10-17 2004-02-24 Sony Corporation Encoded signal characteristic point recording apparatus
US6460076B1 (en) * 1998-12-21 2002-10-01 Qwest Communications International, Inc. Pay per record system and method
US6535687B1 (en) * 1999-07-23 2003-03-18 Sarnoff Corporation Method and system for deterring electronic video piracy through image rearrangement

Also Published As

Publication number Publication date
US6950602B1 (en) 2005-09-27
JP2001042863A (ja) 2001-02-16

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