DE3782410T2 - Geraet zum speichern von optischen daten und verfahren zum loeschen von daten. - Google Patents

Geraet zum speichern von optischen daten und verfahren zum loeschen von daten.

Info

Publication number
DE3782410T2
DE3782410T2 DE8787119250T DE3782410T DE3782410T2 DE 3782410 T2 DE3782410 T2 DE 3782410T2 DE 8787119250 T DE8787119250 T DE 8787119250T DE 3782410 T DE3782410 T DE 3782410T DE 3782410 T2 DE3782410 T2 DE 3782410T2
Authority
DE
Germany
Prior art keywords
data
storing optical
deleting
optical data
deleting data
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 - Fee Related
Application number
DE8787119250T
Other languages
English (en)
Other versions
DE3782410D1 (de
Inventor
Junichi Ohotomo
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Publication of DE3782410D1 publication Critical patent/DE3782410D1/de
Application granted granted Critical
Publication of DE3782410T2 publication Critical patent/DE3782410T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/00666—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
DE8787119250T 1986-12-27 1987-12-28 Geraet zum speichern von optischen daten und verfahren zum loeschen von daten. Expired - Fee Related DE3782410T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61311887A JPS63167428A (ja) 1986-12-27 1986-12-27 情報記憶装置

Publications (2)

Publication Number Publication Date
DE3782410D1 DE3782410D1 (de) 1992-12-03
DE3782410T2 true DE3782410T2 (de) 1993-04-08

Family

ID=18022608

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787119250T Expired - Fee Related DE3782410T2 (de) 1986-12-27 1987-12-28 Geraet zum speichern von optischen daten und verfahren zum loeschen von daten.

Country Status (4)

Country Link
US (2) US4825419A (de)
EP (1) EP0273421B1 (de)
JP (1) JPS63167428A (de)
DE (1) DE3782410T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355355A (en) * 1987-03-18 1994-10-11 Kabushiki Kaisha Toshiba Electronic file apparatus capable of storing code data and image data into optical memory
KR920006304B1 (ko) * 1988-09-14 1992-08-03 마쓰시다 덴끼 산교오 가부시기가이샤 광디스크재생장치와 광디스크재생방법과 복합기록매체
JP2778051B2 (ja) * 1988-10-20 1998-07-23 ソニー株式会社 ディスク記録装置
CA2026740C (en) * 1989-11-20 1995-08-29 Morovat Tayefeh Sensing previously-recorded information while recording or erasing a magnetooptic storage number
JPH05290381A (ja) * 1992-04-10 1993-11-05 Fujitsu General Ltd 追記型光ディスクのデータ消去装置
JP3705862B2 (ja) * 1996-04-22 2005-10-12 株式会社リコー 光ディスク記録装置
KR100716769B1 (ko) * 1999-11-16 2007-05-14 소니 가부시끼 가이샤 기록매체, 데이터 기록방법과 장치, 데이터 재생방법과 장치 및 복사제어방법
EP1168322A4 (de) * 1999-12-28 2002-05-02 Mitsubishi Chem Corp Wiederbeschreibbare optische platte vom phasenwechseltyp mit teilweise ein rom-gebiet und datenaufzeichnungs- und loeschverfahren fuer optische platten
JP2002245635A (ja) * 2001-02-21 2002-08-30 Matsushita Electric Ind Co Ltd 光ディスクデータ消去装置及び光ディスクデータ消去方法
US20070047395A1 (en) * 2005-08-26 2007-03-01 Plasmon Lms, Inc. Optical disk shred operation with detection
CN101315776A (zh) * 2007-05-28 2008-12-03 建兴电子科技股份有限公司 光驱销毁光盘片数据的方法
JP5540918B2 (ja) * 2010-06-15 2014-07-02 ソニー株式会社 情報消去装置、情報消去方法
JP6937468B2 (ja) * 2018-03-06 2021-09-22 パナソニックＩｐマネジメント株式会社 情報記録装置及びデータ消去方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508706C2 (de) * 1974-05-02 1984-10-11 International Business Machines Corp., Armonk, N.Y. Schaltungsanordnung zur Codierung von Datenbitfolgen
JPS5776662A (en) * 1980-10-31 1982-05-13 Toshiba Corp Erasure system for picture information
JPS60154366A (ja) * 1984-01-25 1985-08-14 Toshiba Corp 画像情報記憶検索装置
JPS60157788A (ja) * 1984-01-27 1985-08-19 Toshiba Corp 画像情報記憶検索装置
US4677604A (en) * 1985-02-04 1987-06-30 Selsys Corporation Method for controlling access to recorded data

Also Published As

Publication number Publication date
US4991157A (en) 1991-02-05
US4825419A (en) 1989-04-25
DE3782410D1 (de) 1992-12-03
EP0273421B1 (de) 1992-10-28
JPS63167428A (ja) 1988-07-11
EP0273421A2 (de) 1988-07-06
EP0273421A3 (en) 1989-10-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee