DK68979A - Fremgangsmaade og apparat til lagring af et frekvensmoduleret elektrisk signal paa et informationslagerorgan og informationsbaerende plade til lagring af et frekvensmoduleret signal - Google Patents

Fremgangsmaade og apparat til lagring af et frekvensmoduleret elektrisk signal paa et informationslagerorgan og informationsbaerende plade til lagring af et frekvensmoduleret signal

Info

Publication number
DK68979A
DK68979A DK68979A DK68979A DK68979A DK 68979 A DK68979 A DK 68979A DK 68979 A DK68979 A DK 68979A DK 68979 A DK68979 A DK 68979A DK 68979 A DK68979 A DK 68979A
Authority
DK
Denmark
Prior art keywords
storing
frequency modulated
appliance
signal
storage body
Prior art date
Application number
DK68979A
Other languages
English (en)
Inventor
J S Winslow
Original Assignee
Mca Disco Vision
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 Mca Disco Vision filed Critical Mca Disco Vision
Publication of DK68979A publication Critical patent/DK68979A/da

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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
DK68979A 1978-03-27 1979-02-16 Fremgangsmaade og apparat til lagring af et frekvensmoduleret elektrisk signal paa et informationslagerorgan og informationsbaerende plade til lagring af et frekvensmoduleret signal DK68979A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/890,407 US4225873A (en) 1978-03-27 1978-03-27 Recording and playback system

Publications (1)

Publication Number Publication Date
DK68979A true DK68979A (da) 1979-09-28

Family

ID=25396633

Family Applications (1)

Application Number Title Priority Date Filing Date
DK68979A DK68979A (da) 1978-03-27 1979-02-16 Fremgangsmaade og apparat til lagring af et frekvensmoduleret elektrisk signal paa et informationslagerorgan og informationsbaerende plade til lagring af et frekvensmoduleret signal

Country Status (7)

Country Link
US (1) US4225873A (da)
JP (10) JPS54128703A (da)
DE (1) DE2911861A1 (da)
DK (1) DK68979A (da)
NL (1) NL7901227A (da)
NO (1) NO152150C (da)
SE (1) SE7901438L (da)

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US4979162A (en) * 1987-01-16 1990-12-18 Nikon Corporation Apparatus for detecting the secondary distortion of optical type recorded information
US4998239A (en) * 1987-10-07 1991-03-05 The Dow Chemical Company Optical information recording medium containing a metal alloy as a reflective material
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US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
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Also Published As

Publication number Publication date
JPS621126A (ja) 1987-01-07
JP2737638B2 (ja) 1998-04-08
JPS623440A (ja) 1987-01-09
JPH0714204A (ja) 1995-01-17
NL7901227A (nl) 1979-10-01
JPS621138A (ja) 1987-01-07
DE2911861A1 (de) 1979-10-11
JPS621140A (ja) 1987-01-07
SE7901438L (sv) 1979-09-28
JPS621139A (ja) 1987-01-07
JPS621137A (ja) 1987-01-07
JPH0721562A (ja) 1995-01-24
NO152150B (no) 1985-04-29
NO790541L (no) 1979-09-28
JPS54128703A (en) 1979-10-05
JP2772514B2 (ja) 1998-07-02
JPH0346893B2 (da) 1991-07-17
US4225873A (en) 1980-09-30
NO152150C (no) 1985-08-07
JPH0863774A (ja) 1996-03-08

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