JPH0320821B2 - - Google Patents

Info

Publication number
JPH0320821B2
JPH0320821B2 JP58066553A JP6655383A JPH0320821B2 JP H0320821 B2 JPH0320821 B2 JP H0320821B2 JP 58066553 A JP58066553 A JP 58066553A JP 6655383 A JP6655383 A JP 6655383A JP H0320821 B2 JPH0320821 B2 JP H0320821B2
Authority
JP
Japan
Prior art keywords
recording
level
playback
laser diode
current
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 - Lifetime
Application number
JP58066553A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59191149A (ja
Inventor
Takeo Toyama
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP58066553A priority Critical patent/JPS59191149A/ja
Publication of JPS59191149A publication Critical patent/JPS59191149A/ja
Publication of JPH0320821B2 publication Critical patent/JPH0320821B2/ja
Granted legal-status Critical Current

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
    • G11B7/12—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
JP58066553A 1983-04-14 1983-04-14 光学記録制御機構 Granted JPS59191149A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58066553A JPS59191149A (ja) 1983-04-14 1983-04-14 光学記録制御機構

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58066553A JPS59191149A (ja) 1983-04-14 1983-04-14 光学記録制御機構

Publications (2)

Publication Number Publication Date
JPS59191149A JPS59191149A (ja) 1984-10-30
JPH0320821B2 true JPH0320821B2 (enrdf_load_stackoverflow) 1991-03-20

Family

ID=13319215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58066553A Granted JPS59191149A (ja) 1983-04-14 1983-04-14 光学記録制御機構

Country Status (1)

Country Link
JP (1) JPS59191149A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07118084B2 (ja) * 1984-04-09 1995-12-18 オリンパス光学工業株式会社 光情報再生装置
JPS61142538A (ja) * 1984-12-13 1986-06-30 Matsushita Electric Ind Co Ltd 光学式情報記録再生装置
FR2584223B1 (fr) * 1985-06-28 1994-06-17 Thomson Alcatel Gigadisc Memoire optique a suivi de piste echantillonne pour support d'information pregrave.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1013854A (en) * 1973-02-20 1977-07-12 John S. Winslow Videodisc mastering system

Also Published As

Publication number Publication date
JPS59191149A (ja) 1984-10-30

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