[go: up one dir, main page]

DE69719846D1 - Aufzeichnungsträger, Vorrichtung zur optischen Wiedergabe von Information sowie Suchmethode - Google Patents

Aufzeichnungsträger, Vorrichtung zur optischen Wiedergabe von Information sowie Suchmethode

Info

Publication number
DE69719846D1
DE69719846D1 DE69719846T DE69719846T DE69719846D1 DE 69719846 D1 DE69719846 D1 DE 69719846D1 DE 69719846 T DE69719846 T DE 69719846T DE 69719846 T DE69719846 T DE 69719846T DE 69719846 D1 DE69719846 D1 DE 69719846D1
Authority
DE
Germany
Prior art keywords
information
search method
record carrier
optical reproduction
reproduction
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
DE69719846T
Other languages
English (en)
Other versions
DE69719846T2 (de
Inventor
Shigeaki Wachi
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69719846D1 publication Critical patent/DE69719846D1/de
Publication of DE69719846T2 publication Critical patent/DE69719846T2/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
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
    • G11B23/282—Limited play
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/283—Security features, e.g. digital codes
    • G11B23/284—Security features, e.g. digital codes on the record carrier
    • 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
    • G11B7/00745—Sectoring or header formats within a track
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • 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
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • 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
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
    • 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
    • G11B7/0045—Recording
    • G11B7/00455—Recording involving reflectivity, absorption or colour changes
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/2585—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on aluminium

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
DE69719846T 1996-05-10 1997-05-06 Aufzeichnungsträger, Vorrichtung zur optischen Wiedergabe von Information sowie Suchmethode Expired - Fee Related DE69719846T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8116315A JPH09306030A (ja) 1996-05-10 1996-05-10 記録媒体
JP11631596 1996-05-10

Publications (2)

Publication Number Publication Date
DE69719846D1 true DE69719846D1 (de) 2003-04-24
DE69719846T2 DE69719846T2 (de) 2004-01-22

Family

ID=14683958

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69719846T Expired - Fee Related DE69719846T2 (de) 1996-05-10 1997-05-06 Aufzeichnungsträger, Vorrichtung zur optischen Wiedergabe von Information sowie Suchmethode

Country Status (9)

Country Link
US (1) US6038207A (de)
EP (1) EP0806768B1 (de)
JP (1) JPH09306030A (de)
KR (1) KR970076726A (de)
CN (1) CN1167312A (de)
BR (1) BR9703115A (de)
DE (1) DE69719846T2 (de)
SG (1) SG48527A1 (de)
TW (1) TW343332B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011772A (en) 1996-09-16 2000-01-04 Spectradisc Corporation Machine-readable optical disc with reading-inhibit agent
US6747930B1 (en) 1996-12-24 2004-06-08 Hide & Seek Technologies, Inc. Data protection on an optical disk
US6104686A (en) * 1998-01-26 2000-08-15 Eastman Kodak Company Copy protection marks on a transparent layer of an optical disk indicating that the disk has been previously accessed
JP3890737B2 (ja) 1998-04-14 2007-03-07 株式会社日立製作所 ディジタル映像信号または音声信号の再生装置及び再生方法
US6338933B1 (en) 1998-06-25 2002-01-15 Spectradisc Corporation Methods and apparatus for rendering an optically encoded medium unreadable
US6531262B1 (en) 1998-06-25 2003-03-11 Spectradisc Corporation Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant
TWI237256B (en) * 1998-07-28 2005-08-01 Matsushita Electric Ind Co Ltd Optical disk and apparatus for driving optical disc
KR100656687B1 (ko) * 1999-05-19 2006-12-18 소니 가부시끼 가이샤 광 디스크 기록 장치, 광 디스크 기록 방법, 광 디스크 및 광디스크 재생장치
US7233320B1 (en) * 1999-05-25 2007-06-19 Silverbrook Research Pty Ltd Computer system interface surface with reference points
JP2000348388A (ja) * 1999-06-04 2000-12-15 Sharp Corp 光記録媒体
US6760299B1 (en) * 1999-06-30 2004-07-06 Sharp Kabushiki Kaisha Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproduction
JP4243059B2 (ja) * 1999-07-12 2009-03-25 フレックスプレイ・テクノロジーズ・インコーポレイテッド 使捨て式光学記憶媒体とその製造方法
JP3962522B2 (ja) 2000-02-14 2007-08-22 パイオニア株式会社 情報記録媒体
JP3922424B2 (ja) * 2000-07-25 2007-05-30 パイオニア株式会社 光学式記録媒体、光学式記録媒体製造装置及び光学式記録媒体製造方法
TW564416B (en) * 2000-09-12 2003-12-01 Tdk Corp Optical recording medium
US6982109B2 (en) * 2000-12-11 2006-01-03 Flexplay Technologies, Inc. Method for rendering surface layer of limited play disk lightfast
JPWO2002080172A1 (ja) * 2001-03-30 2004-07-22 ソニー株式会社 記録媒体の記録又は再生装置並びにデータの出力制御方法
AU2002305849B2 (en) * 2001-06-05 2008-01-17 Flexplay Technologies, Inc. Limited play optical devices with interstitial reactive layer and methods of making same
US20040158871A1 (en) * 2003-02-04 2004-08-12 Bulldog Investments, Lp Automated digital media vending apparatus
WO2006130496A1 (en) * 2005-05-27 2006-12-07 Consumable Media Llc Limited play optical discs
JP5073654B2 (ja) 2006-05-30 2012-11-14 パナソニック株式会社 光ディスク、光ディスク製造方法、光ディスク記録装置及び光ディスク再生装置
US20090075015A1 (en) * 2007-07-24 2009-03-19 Detty Michael R Limited Play Optical Discs
CN109059795B (zh) * 2018-06-29 2020-11-03 歌尔光学科技有限公司 深度测量方法、深度测量装置及拍摄设备

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577306A (en) * 1980-02-25 1986-03-18 Eastman Kodak Company Method for optically writing and/or reading information on optical recording elements
US4360908A (en) * 1980-02-25 1982-11-23 Eastman Kodak Company Physically optimized optical disc structure, method and apparatus
US4527173A (en) * 1984-04-16 1985-07-02 Eastman Kodak Company Erasable, reusable optical recording element and method
US4538159A (en) * 1984-04-16 1985-08-27 Eastman Kodak Company Ceramic overcoated optical recording element
US4924436A (en) * 1987-06-22 1990-05-08 Energy Conversion Devices, Inc. Data storage device having a phase change memory medium reversible by direct overwrite and method of direct overwrite
DE4019301A1 (de) * 1990-06-16 1991-12-19 Basf Ag Reversibler optischer aufzeichnungstraeger vom phasenwechsel-typ
JPH04167237A (ja) * 1990-10-31 1992-06-15 Sony Corp 光ディスク
JP3412163B2 (ja) * 1991-05-24 2003-06-03 松下電器産業株式会社 光磁気ディスク装置
JP3160632B2 (ja) * 1991-09-27 2001-04-25 ソニー株式会社 光ディスクとその再生方法
JPH05101471A (ja) * 1991-10-08 1993-04-23 Sony Corp 光磁気記録再生方法
JP3084969B2 (ja) * 1992-10-16 2000-09-04 松下電器産業株式会社 再生装置と記録装置とケース入り記録媒体と記録媒体の初期化装置
JPH076368A (ja) * 1993-02-03 1995-01-10 Matsushita Electric Ind Co Ltd 光ディスク装置および記録再生方法
EP0643391B1 (de) * 1993-09-07 2000-02-02 Hitachi, Ltd. Informationsaufzeichnungsträger, optische Platten und Wiedergabesystem

Also Published As

Publication number Publication date
EP0806768B1 (de) 2003-03-19
JPH09306030A (ja) 1997-11-28
DE69719846T2 (de) 2004-01-22
SG48527A1 (en) 1998-04-17
BR9703115A (pt) 1998-10-27
TW343332B (en) 1998-10-21
KR970076726A (ko) 1997-12-12
MX9703324A (es) 1997-11-29
US6038207A (en) 2000-03-14
EP0806768A3 (de) 1998-07-08
EP0806768A2 (de) 1997-11-12
CN1167312A (zh) 1997-12-10

Similar Documents

Publication Publication Date Title
DE69719846D1 (de) Aufzeichnungsträger, Vorrichtung zur optischen Wiedergabe von Information sowie Suchmethode
DE69911551D1 (de) Medium zur Aufnahme von Informationen, Vorrichtung und Verfahren zur Datenaufnahme oder -wiedergabe von diesem
DE69705343D1 (de) Vorrichtung und Verfahren zur optischen Aufzeichnung und Wiedergabe von Information
DE69421883D1 (de) Vorrichtung zur Wiedergabe von Aufzeichnungsträgern
DE69020049D1 (de) Verfahren zur Herstellung eines Informationswiedergabegeräts und Objektivträger.
DE68929129D1 (de) Verfahren zur Informationsaufzeichnung und -wiedergabe, Vorrichtung dazu und Aufzeichnungsmedium
DE3677305D1 (de) Verfahren und geraet zur optischen aufnahme und wiedergabe.
DE69723047D1 (de) Optisches informationsaufzeichnungsmedium, verfahren zu dessen herstellung, aufzeichnungsverfahren und aufzeichnungsvorrichtung
DE69941481D1 (de) Verfahren und vorrichtung für optische informationen, verfahren und vorrichtung zur wiedergabe von optischen informationen, vorrichtung zur aufzeichnung, wiedergabe von optischen informationen sowie optisches informationsaufzeichnungsmedium
DE69737272D1 (de) Optisches Aufzeichnungsmedium, Verfahren zur Aufzeichnung/Wiedergabe des optischen Aufzeichnungsmediums, und Gerät zur Aufzeichnung/Wiedergabe
DE68920727D1 (de) Verfahren und Vorrichtung zur Aufzeichnung und Wiedergabe von Information mit mehreren Kanal-Audio Signalen.
DE69723165D1 (de) Vorrichtung zur aufzeichnung auf einem informationsträger, verfahren und informationsträger dazu
DE69732447D1 (de) Verfahren und Vorrichtung zur Wiedergabe von schriftartfreien, strukturierten Dokumenten
DE69737115D1 (de) Verfahren und Vorrichtung zur Wiedergabe von schriftartfreien, strukturierten Dokumenten
DE69612833D1 (de) Verfahren und vorrichtung zur aufnahme von optischer information
DE3788634D1 (de) Verfahren und Gerät zur optischen Aufnahme.
DE69938855D1 (de) Optisches Informationsaufzeichnungsmedium, Verfahren und Gerät zur Aufzeichnung und Wiedergabe
DE69830094D1 (de) Vorrichtung und Verfahren zur optischen Aufzeichnung und Wiedergabe von Daten, sowie optisches Speichermedium
DE69621519D1 (de) Verfahren zur Maximalwahrscheinlichkeitsdekodierung und Gerät zur Wiedergabe von Digitalinformationen
DE69736919D1 (de) Informationsträger mit zusatzinformationen, wiedergabegerät und verfahren zur herstellung eines solchen informationsträgers
DE69930884D1 (de) Verfahren und Vorrichtung zur Wiedergabe von optischen Informationen
DE3750977D1 (de) Verfahren und Gerät zur optischen Aufnahme/Wiedergabe.
DE69834317D1 (de) Verfahren und vorrichtung zur audioaufzeichnung, aufzeichnungsträger und wiedergabevorrichtung
DE69524008D1 (de) Vorrichtung zur optischen Aufzeichnung von Information
DE69724043D1 (de) Vorrichtung und Verfahren zur Aufzeichnung und Wiedergabe, und Platte dafür

Legal Events

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