JPS59207439A - 光デイスクシステムにおけるビ−ムアクセス装置 - Google Patents

光デイスクシステムにおけるビ−ムアクセス装置

Info

Publication number
JPS59207439A
JPS59207439A JP8308083A JP8308083A JPS59207439A JP S59207439 A JPS59207439 A JP S59207439A JP 8308083 A JP8308083 A JP 8308083A JP 8308083 A JP8308083 A JP 8308083A JP S59207439 A JPS59207439 A JP S59207439A
Authority
JP
Japan
Prior art keywords
lens
head
track
optical
spot
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.)
Granted
Application number
JP8308083A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0150974B2 (enrdf_load_stackoverflow
Inventor
Hiroshi Inada
稲田　博司
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8308083A priority Critical patent/JPS59207439A/ja
Publication of JPS59207439A publication Critical patent/JPS59207439A/ja
Publication of JPH0150974B2 publication Critical patent/JPH0150974B2/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
JP8308083A 1983-05-12 1983-05-12 光デイスクシステムにおけるビ−ムアクセス装置 Granted JPS59207439A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8308083A JPS59207439A (ja) 1983-05-12 1983-05-12 光デイスクシステムにおけるビ−ムアクセス装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8308083A JPS59207439A (ja) 1983-05-12 1983-05-12 光デイスクシステムにおけるビ−ムアクセス装置

Publications (2)

Publication Number Publication Date
JPS59207439A true JPS59207439A (ja) 1984-11-24
JPH0150974B2 JPH0150974B2 (enrdf_load_stackoverflow) 1989-11-01

Family

ID=13792202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8308083A Granted JPS59207439A (ja) 1983-05-12 1983-05-12 光デイスクシステムにおけるビ−ムアクセス装置

Country Status (1)

Country Link
JP (1) JPS59207439A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63173719U (enrdf_load_stackoverflow) * 1987-04-30 1988-11-11
US5077716A (en) * 1988-09-16 1991-12-31 Hitachi, Ltd Optical recording and reproducing system having an accurate high-speed optical head positioning apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153138A (en) * 1979-05-14 1980-11-28 Mitsubishi Electric Corp Optical pickup unit
JPS5794940A (en) * 1980-12-05 1982-06-12 Fujitsu Ltd Optical disk device
JPS57120236A (en) * 1981-01-14 1982-07-27 Sony Corp Optical reproducing device
JPS5826331A (ja) * 1981-08-11 1983-02-16 Nippon Telegr & Teleph Corp <Ntt> 光学ヘツド
JPS5864645A (ja) * 1981-10-13 1983-04-18 Toshiba Corp 光デイスクサ−チ制御方式

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153138A (en) * 1979-05-14 1980-11-28 Mitsubishi Electric Corp Optical pickup unit
JPS5794940A (en) * 1980-12-05 1982-06-12 Fujitsu Ltd Optical disk device
JPS57120236A (en) * 1981-01-14 1982-07-27 Sony Corp Optical reproducing device
JPS5826331A (ja) * 1981-08-11 1983-02-16 Nippon Telegr & Teleph Corp <Ntt> 光学ヘツド
JPS5864645A (ja) * 1981-10-13 1983-04-18 Toshiba Corp 光デイスクサ−チ制御方式

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63173719U (enrdf_load_stackoverflow) * 1987-04-30 1988-11-11
US5077716A (en) * 1988-09-16 1991-12-31 Hitachi, Ltd Optical recording and reproducing system having an accurate high-speed optical head positioning apparatus

Also Published As

Publication number Publication date
JPH0150974B2 (enrdf_load_stackoverflow) 1989-11-01

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