SE7901438L - Forfarande samt apparat for uppteckning och uttagning av en modulerad elektrisk signal som representerar videoinformation - Google Patents

Forfarande samt apparat for uppteckning och uttagning av en modulerad elektrisk signal som representerar videoinformation

Info

Publication number
SE7901438L
SE7901438L SE7901438A SE7901438A SE7901438L SE 7901438 L SE7901438 L SE 7901438L SE 7901438 A SE7901438 A SE 7901438A SE 7901438 A SE7901438 A SE 7901438A SE 7901438 L SE7901438 L SE 7901438L
Authority
SE
Sweden
Prior art keywords
procedure
detecting
setting
electrical signal
video information
Prior art date
Application number
SE7901438A
Other languages
English (en)
Swedish (sv)
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 SE7901438L publication Critical patent/SE7901438L/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
    • G11B7/004—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
SE7901438A 1978-03-27 1979-02-19 Forfarande samt apparat for uppteckning och uttagning av en modulerad elektrisk signal som representerar videoinformation SE7901438L (sv)

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
SE7901438L true SE7901438L (sv) 1979-09-28

Family

ID=25396633

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7901438A SE7901438L (sv) 1978-03-27 1979-02-19 Forfarande samt apparat for uppteckning och uttagning av en modulerad elektrisk signal som representerar videoinformation

Country Status (7)

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

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US5007037A (en) * 1986-06-05 1991-04-09 Quantex Corporation Optical disk drive system utilizing electron trapping media for data storage
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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
US5142493A (en) * 1988-07-29 1992-08-25 Quantex Corporation Optical disk employing electron trapping material as a storage medium
US4941139A (en) * 1988-09-02 1990-07-10 International Business Machines Corporation Checking media operations and recording during optical recording
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US5265079A (en) 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
US6141300A (en) * 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
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US5677899A (en) * 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
US6069857A (en) * 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
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
US5729511A (en) * 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
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Also Published As

Publication number Publication date
JPS623440A (ja) 1987-01-09
NL7901227A (nl) 1979-10-01
JPS54128703A (en) 1979-10-05
JP2772514B2 (ja) 1998-07-02
NO790541L (no) 1979-09-28
JPH0721562A (ja) 1995-01-24
NO152150C (no) 1985-08-07
NO152150B (no) 1985-04-29
JPS621140A (ja) 1987-01-07
DK68979A (da) 1979-09-28
JP2737638B2 (ja) 1998-04-08
JPS621139A (ja) 1987-01-07
JPH0714204A (ja) 1995-01-17
JPH0863774A (ja) 1996-03-08
JPS621137A (ja) 1987-01-07
JPH0346893B2 (no) 1991-07-17
US4225873A (en) 1980-09-30
DE2911861A1 (de) 1979-10-11
JPS621138A (ja) 1987-01-07
JPS621126A (ja) 1987-01-07

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