NL8300478A - Optisch uitleesbare geheugenschijf. - Google Patents

Optisch uitleesbare geheugenschijf. Download PDF

Info

Publication number
NL8300478A
NL8300478A NL8300478A NL8300478A NL8300478A NL 8300478 A NL8300478 A NL 8300478A NL 8300478 A NL8300478 A NL 8300478A NL 8300478 A NL8300478 A NL 8300478A NL 8300478 A NL8300478 A NL 8300478A
Authority
NL
Netherlands
Prior art keywords
substrate
cover plate
parts
readable memory
plane
Prior art date
Application number
NL8300478A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL8300478A priority Critical patent/NL8300478A/nl
Priority to US06/485,530 priority patent/US4510508A/en
Priority to CA000446585A priority patent/CA1211559A/en
Priority to EP84200147A priority patent/EP0118146B1/en
Priority to EP19880202996 priority patent/EP0316051A3/en
Priority to DE8484200147T priority patent/DE3479359D1/de
Priority to JP1984014198U priority patent/JPS59138029U/ja
Priority to KR1019840000541A priority patent/KR840008874A/ko
Priority to ES529481A priority patent/ES8500493A1/es
Publication of NL8300478A publication Critical patent/NL8300478A/nl
Priority to JP1990095494U priority patent/JPH0525065Y2/ja
Priority to SG849/90A priority patent/SG84990G/en
Priority to HK858/91A priority patent/HK85891A/xx

Links

Classifications

    • 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
    • G11B7/24015—Air-sandwiched 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/24018—Laminated discs
    • G11B7/24027—Layers; Shape, structure or physical properties thereof

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
NL8300478A 1983-02-09 1983-02-09 Optisch uitleesbare geheugenschijf. NL8300478A (nl)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NL8300478A NL8300478A (nl) 1983-02-09 1983-02-09 Optisch uitleesbare geheugenschijf.
US06/485,530 US4510508A (en) 1983-02-09 1983-04-15 Optical disc pressure-collapsible cover
CA000446585A CA1211559A (en) 1983-02-09 1984-02-02 Optical readable storage disc
DE8484200147T DE3479359D1 (en) 1983-02-09 1984-02-03 Optically readable storage disc
EP19880202996 EP0316051A3 (en) 1983-02-09 1984-02-03 Optical readable storage disc
EP84200147A EP0118146B1 (en) 1983-02-09 1984-02-03 Optically readable storage disc
JP1984014198U JPS59138029U (ja) 1983-02-09 1984-02-06 光学的に読取可能な記録デイスク
KR1019840000541A KR840008874A (ko) 1983-02-09 1984-02-06 광학 독출 저장 디스크
ES529481A ES8500493A1 (es) 1983-02-09 1984-02-06 Un disco de almacenamiento legible opticamente
JP1990095494U JPH0525065Y2 (es) 1983-02-09 1990-09-12
SG849/90A SG84990G (en) 1983-02-09 1990-10-24 Optically readable storage disc
HK858/91A HK85891A (en) 1983-02-09 1991-10-31 Optically readable storage disc

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8300478A NL8300478A (nl) 1983-02-09 1983-02-09 Optisch uitleesbare geheugenschijf.
NL8300478 1983-02-09

Publications (1)

Publication Number Publication Date
NL8300478A true NL8300478A (nl) 1984-09-03

Family

ID=19841382

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8300478A NL8300478A (nl) 1983-02-09 1983-02-09 Optisch uitleesbare geheugenschijf.

Country Status (10)

Country Link
US (1) US4510508A (es)
EP (1) EP0118146B1 (es)
JP (2) JPS59138029U (es)
KR (1) KR840008874A (es)
CA (1) CA1211559A (es)
DE (1) DE3479359D1 (es)
ES (1) ES8500493A1 (es)
HK (1) HK85891A (es)
NL (1) NL8300478A (es)
SG (1) SG84990G (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216664A (en) * 1983-02-09 1993-06-01 U.S. Philips Corporation Optically readable disc with a centering member fixed to a transparent substrate
NL8300479A (nl) * 1983-02-09 1984-09-03 Philips Nv Optisch uitleesbare plaat.
JPS6085724U (ja) * 1983-11-17 1985-06-13 シャープ株式会社 光メモリ円板
NL8400477A (nl) * 1984-02-14 1985-09-02 Philips Nv Optisch uitleesbare geheugenschijf.
US5007040A (en) * 1984-09-22 1991-04-09 Canon Kabushiki Kaisha Magnetic recording and/or reproducing apparatus having a retaining mechanism for a disc-shaped magnetic record bearing medium
US4641152A (en) * 1986-02-24 1987-02-03 Producers Color Service, Inc. Fixturing apparatus for vibration dampened optical disc recording
US5293370A (en) * 1991-01-16 1994-03-08 Del Mar Avionics Method and apparatus for creating optical disc masters
JPH0680550B2 (ja) * 1991-06-05 1994-10-12 ソニー株式会社 情報ディスク用ターンテーブル
JPH0554436A (ja) * 1991-08-20 1993-03-05 Pioneer Electron Corp 光記録媒体
US5427520A (en) * 1992-01-31 1995-06-27 Sony Corporation Mold device for fabricating disc substrate
US5787069A (en) * 1996-09-13 1998-07-28 Digital Armor Inc. Protective cover for an optical disc
US6424488B1 (en) 1999-02-22 2002-07-23 Seagate Technology Llc Peripherally extending disc ring to limit disc deflection and to provide disc stack balancing
US6317402B1 (en) * 1999-11-23 2001-11-13 Behavior Tech Computer Corporation Disk tray of optic disk drive having pressure balance device
US7376073B2 (en) 2000-12-14 2008-05-20 Ecd Systems, Inc. Optical storage medium having distortion regions, and a method of modifying an optical storage medium to include distortion regions
US7562396B2 (en) * 2001-08-21 2009-07-14 Ecd Systems, Inc. Systems and methods for media authentication
US7643393B2 (en) * 2001-12-12 2010-01-05 Ecd Systems, Inc. Systems and methods for optical media modification
US7716485B2 (en) * 2002-02-01 2010-05-11 Sca Ipla Holdings Inc. Systems and methods for media authentication

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1766046A (en) * 1929-01-07 1930-06-24 Fed Telegraph Co Sound-reproducing system
US3815146A (en) * 1973-04-09 1974-06-04 Teletype Corp Record-turntable assembly and method of making
JPS53130156A (en) * 1977-04-21 1978-11-13 Iseki Agricult Mach Grainnbag holder
JPS5496002A (en) * 1978-01-13 1979-07-30 Hitachi Ltd Information recording plate
FR2437668A1 (fr) * 1978-09-29 1980-04-25 Thomson Csf Disque optique protege
JPS6028041B2 (ja) * 1979-08-30 1985-07-02 パイオニア株式会社 信号記録用ディスクの製造方法
JPS5722224A (en) * 1980-07-17 1982-02-05 Ricoh Co Ltd Automatic focusing device in collapsible camera
JPS5756332U (es) * 1980-09-17 1982-04-02
JPS5771247U (es) * 1980-10-17 1982-04-30
JPS5788530A (en) * 1980-11-21 1982-06-02 Fujitsu Ltd Durability testing method for magnetic disc medium
US4365257A (en) * 1981-03-05 1982-12-21 Minnesota Mining And Manufacturing Company Stretched-film optical recording disc
US4365258A (en) * 1981-05-18 1982-12-21 Eastman Kodak Company Optical disc unit, fabrication method and cooperating write and/or read apparatus
JPS57203272A (en) * 1981-06-10 1982-12-13 Hitachi Ltd Disc locating mechanism
JPS57113466A (en) * 1981-09-18 1982-07-14 Sony Corp Magnetic sheet jacket
FR2524186B1 (fr) * 1982-03-23 1989-02-24 Thomson Csf Disque optique protege comprenant un element souple de fermeture
JPS5914199A (ja) * 1982-07-13 1984-01-25 Sony Corp 文字図形情報システムの端末装置

Also Published As

Publication number Publication date
JPH0525065Y2 (es) 1993-06-24
ES529481A0 (es) 1984-10-01
EP0118146B1 (en) 1989-08-09
DE3479359D1 (en) 1989-09-14
EP0118146A1 (en) 1984-09-12
JPS59138029U (ja) 1984-09-14
KR840008874A (ko) 1984-12-19
JPH0319065Y2 (es) 1991-04-23
US4510508A (en) 1985-04-09
CA1211559A (en) 1986-09-16
HK85891A (en) 1991-11-08
ES8500493A1 (es) 1984-10-01
JPH0345222U (es) 1991-04-25
SG84990G (en) 1991-01-04

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
A85 Still pending on 85-01-01
BV The patent application has lapsed