DD228381A5 - Optisch auslesbare speicherscheibe - Google Patents

Optisch auslesbare speicherscheibe Download PDF

Info

Publication number
DD228381A5
DD228381A5 DD85273212A DD27321285A DD228381A5 DD 228381 A5 DD228381 A5 DD 228381A5 DD 85273212 A DD85273212 A DD 85273212A DD 27321285 A DD27321285 A DD 27321285A DD 228381 A5 DD228381 A5 DD 228381A5
Authority
DD
German Democratic Republic
Prior art keywords
disc
carrier
outer edge
disk
edge
Prior art date
Application number
DD85273212A
Other languages
German (de)
English (en)
Inventor
Leonardus P J Hoogeveen
Aloysius M J M Spruijt
Hendrikus W C M Peeters
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
Publication of DD228381A5 publication Critical patent/DD228381A5/de

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/24097Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention; Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/24015Air-sandwiched discs

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Packaging For Recording Disks (AREA)
DD85273212A 1984-02-14 1985-02-12 Optisch auslesbare speicherscheibe DD228381A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8400476A NL8400476A (nl) 1984-02-14 1984-02-14 Optisch uitleesbare geheugenschijf.

Publications (1)

Publication Number Publication Date
DD228381A5 true DD228381A5 (de) 1985-10-09

Family

ID=19843488

Family Applications (1)

Application Number Title Priority Date Filing Date
DD85273212A DD228381A5 (de) 1984-02-14 1985-02-12 Optisch auslesbare speicherscheibe

Country Status (11)

Country Link
JP (1) JPS60140235U (fr)
BE (1) BE901719A (fr)
CA (1) CA1241744A (fr)
DD (1) DD228381A5 (fr)
DE (1) DE3505015A1 (fr)
ES (1) ES8606710A1 (fr)
FR (1) FR2559607A1 (fr)
GB (1) GB2155684B (fr)
IT (1) IT1183232B (fr)
NL (1) NL8400476A (fr)
SU (1) SU1487826A3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2343784B (en) * 1998-11-16 2001-08-01 Leung Ching Yuen Irregular optical disc
US20020136155A1 (en) * 2001-03-06 2002-09-26 Chieh-Ho Chen CD safe to hold

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE203656C (fr) *
DE190908C (fr) *
GB335768A (en) * 1929-10-24 1930-10-02 Jacoviac Maurice Improvements in protecting devices for gramophone disc records
DE883811C (de) * 1951-06-08 1953-07-20 Hermann Geiselhart Ring aus Gummi als Plattenschutz
US4331966A (en) * 1980-10-06 1982-05-25 Storage Technology Corporation Information storage device and method of forming same
JPS5774842A (en) * 1980-10-24 1982-05-11 Mitsubishi Electric Corp Optical information recording disk
US4376963A (en) * 1980-12-19 1983-03-15 International Business Machines Corporation Composite magnetic recording disk
JPS57150155A (en) * 1981-03-09 1982-09-16 Matsushita Electric Ind Co Ltd Magnetooptic disc
JPS57172542A (en) * 1981-04-15 1982-10-23 Toshiba Corp Information storage medium
JPS57172541A (en) * 1981-04-15 1982-10-23 Toshiba Corp Information storage medium
FR2528216B1 (fr) * 1982-06-08 1988-01-08 Thomson Csf Disque optique protege a porte-couche libre
JPS5987636A (ja) * 1982-11-10 1984-05-21 Toshiba Corp 情報記憶媒体

Also Published As

Publication number Publication date
IT1183232B (it) 1987-10-15
IT8519458A0 (it) 1985-02-11
CA1241744A (fr) 1988-09-06
FR2559607A1 (fr) 1985-08-16
GB2155684B (en) 1988-11-02
ES8606710A1 (es) 1986-04-01
GB2155684A (en) 1985-09-25
BE901719A (fr) 1985-08-12
SU1487826A3 (ru) 1989-06-15
NL8400476A (nl) 1985-09-02
DE3505015A1 (de) 1985-08-14
ES540285A0 (es) 1986-04-01
JPS60140235U (ja) 1985-09-17
GB8503678D0 (en) 1985-03-13

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