JPS60127547A - 光学的ピツクアツプ - Google Patents

光学的ピツクアツプ

Info

Publication number
JPS60127547A
JPS60127547A JP58237071A JP23707183A JPS60127547A JP S60127547 A JPS60127547 A JP S60127547A JP 58237071 A JP58237071 A JP 58237071A JP 23707183 A JP23707183 A JP 23707183A JP S60127547 A JPS60127547 A JP S60127547A
Authority
JP
Japan
Prior art keywords
spot
recording
erasing
light
information
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
JP58237071A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0338656B2 (enrdf_load_stackoverflow
Inventor
Toshiaki Kashihara
樫原　俊昭
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP58237071A priority Critical patent/JPS60127547A/ja
Publication of JPS60127547A publication Critical patent/JPS60127547A/ja
Publication of JPH0338656B2 publication Critical patent/JPH0338656B2/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP58237071A 1983-12-14 1983-12-14 光学的ピツクアツプ Granted JPS60127547A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58237071A JPS60127547A (ja) 1983-12-14 1983-12-14 光学的ピツクアツプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58237071A JPS60127547A (ja) 1983-12-14 1983-12-14 光学的ピツクアツプ

Publications (2)

Publication Number Publication Date
JPS60127547A true JPS60127547A (ja) 1985-07-08
JPH0338656B2 JPH0338656B2 (enrdf_load_stackoverflow) 1991-06-11

Family

ID=17009982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58237071A Granted JPS60127547A (ja) 1983-12-14 1983-12-14 光学的ピツクアツプ

Country Status (1)

Country Link
JP (1) JPS60127547A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195227A3 (en) * 1985-03-20 1989-07-19 Hitachi, Ltd. Magneto-optical disc memory

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59152526A (ja) * 1983-02-19 1984-08-31 Canon Inc 情報消去方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59152526A (ja) * 1983-02-19 1984-08-31 Canon Inc 情報消去方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195227A3 (en) * 1985-03-20 1989-07-19 Hitachi, Ltd. Magneto-optical disc memory

Also Published As

Publication number Publication date
JPH0338656B2 (enrdf_load_stackoverflow) 1991-06-11

Similar Documents

Publication Publication Date Title
JP3057517B2 (ja) 光記録媒体の信号再生方法
JP3057518B2 (ja) 光記録媒体の信号再生方法
US4633273A (en) Information recording medium including antimony-selenium compounds
JP2839498B2 (ja) 光ディスク媒体
JP2728413B2 (ja) 情報の記録・再生方法及び装置
JPH0532811B2 (enrdf_load_stackoverflow)
JPH01229426A (ja) 光学情報の記録方法
JP2708476B2 (ja) 情報の記録・再生方法
JPS60127547A (ja) 光学的ピツクアツプ
JPH03152736A (ja) 光学情報記録媒体と光学情報記録媒体用保護膜
JP3365441B2 (ja) 光学的情報記録媒体
JP2809818B2 (ja) 記録媒体
KR100198558B1 (ko) 상변화형 광 디스크
JPH0312824A (ja) 相変化型光記録媒体の記録・消去・再生方法及び構成方法
JPH03141028A (ja) 光ディスクの記録消去法
JPH0573961A (ja) 溶融マスク層を持つ高密度光記録媒体
JPS59140638A (ja) 情報記録方法
JP3223907B2 (ja) 光学的情報記録方法
JPH08235588A (ja) 情報の記録方法
JPS62172542A (ja) 光デイスク
JPS6381632A (ja) 光デイスクの記録方法
JPH0273524A (ja) 光ディスク記録方法
JPH06338058A (ja) 光情報記録装置
JP2000057577A (ja) 光記録媒体
JPS63103437A (ja) 光メモリ−装置