JPH0210492B2 - - Google Patents

Info

Publication number
JPH0210492B2
JPH0210492B2 JP55049714A JP4971480A JPH0210492B2 JP H0210492 B2 JPH0210492 B2 JP H0210492B2 JP 55049714 A JP55049714 A JP 55049714A JP 4971480 A JP4971480 A JP 4971480A JP H0210492 B2 JPH0210492 B2 JP H0210492B2
Authority
JP
Japan
Prior art keywords
recording
recording medium
disk
optical
light
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
JP55049714A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56145535A (en
Inventor
Nobuo Akahira
Michoshi Nagashima
Shunji Harikae
Tomio Yoshida
Tadaoki Yamashita
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=12838849&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH0210492(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4971480A priority Critical patent/JPS56145535A/ja
Priority to EP81102786A priority patent/EP0038499B1/en
Priority to DE8181102786T priority patent/DE3176435D1/de
Priority to US06/254,276 priority patent/US4385303A/en
Publication of JPS56145535A publication Critical patent/JPS56145535A/ja
Publication of JPH0210492B2 publication Critical patent/JPH0210492B2/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24079—Width or depth
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)
JP4971480A 1980-04-15 1980-04-15 Disc for optical recording Granted JPS56145535A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4971480A JPS56145535A (en) 1980-04-15 1980-04-15 Disc for optical recording
EP81102786A EP0038499B1 (en) 1980-04-15 1981-04-11 Optical recording and reproducing system
DE8181102786T DE3176435D1 (en) 1980-04-15 1981-04-11 Optical recording and reproducing system
US06/254,276 US4385303A (en) 1980-04-15 1981-04-15 Optical recording and reproducing disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4971480A JPS56145535A (en) 1980-04-15 1980-04-15 Disc for optical recording

Publications (2)

Publication Number Publication Date
JPS56145535A JPS56145535A (en) 1981-11-12
JPH0210492B2 true JPH0210492B2 (en, 2012) 1990-03-08

Family

ID=12838849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4971480A Granted JPS56145535A (en) 1980-04-15 1980-04-15 Disc for optical recording

Country Status (4)

Country Link
US (1) US4385303A (en, 2012)
EP (1) EP0038499B1 (en, 2012)
JP (1) JPS56145535A (en, 2012)
DE (1) DE3176435D1 (en, 2012)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581839A (ja) * 1981-06-25 1983-01-07 Akai Electric Co Ltd 光記録媒体
FR2509891B1 (fr) * 1981-07-17 1986-12-05 Thomson Csf Dispositif optique d'enregistrement-lecture sur support d'information pregrave
JPS5862842A (ja) * 1981-10-09 1983-04-14 Matsushita Electric Ind Co Ltd 光学的記録用円盤
JPS59110053A (ja) * 1982-12-13 1984-06-25 Matsushita Electric Ind Co Ltd 光メモリデイスクの製造方法
JPS5911551A (ja) * 1982-07-12 1984-01-21 Toshiba Corp 光学式情報記憶媒体
JPS5996546A (ja) * 1982-11-25 1984-06-04 Sony Corp 反射型光学記録体
JPS59101043A (ja) * 1982-11-30 1984-06-11 Matsushita Electric Ind Co Ltd 情報記録再生坦体
NL8301632A (nl) * 1983-05-09 1984-12-03 Philips Nv Registratiedrager waarin langs optische weg informatie kan worden ingeschreven en uitgelezen.
JPS6020331A (ja) * 1983-07-14 1985-02-01 Matsushita Electric Ind Co Ltd 光学情報記録再生用円盤
DE3483854D1 (de) * 1983-07-14 1991-02-07 Matsushita Electric Ind Co Ltd Platte zum aufzeichnen und wiedergeben von optischen informationen.
JPH0636253B2 (ja) * 1983-08-18 1994-05-11 シャープ株式会社 光メモリ円板
JPS6050733A (ja) * 1983-08-31 1985-03-20 Sony Corp 光学式記録媒体及びその原盤の製造装置
US4985881A (en) * 1983-12-23 1991-01-15 Hitachi, Ltd. Record carrier for a magneto-optical disc memory having guide grooves of a plurality of tracks disposed with a predetermined relation to light spot diameter
JPS60231928A (ja) * 1984-04-27 1985-11-18 Matsushita Electric Ind Co Ltd 光学情報記録消去方法
JPS60261043A (ja) * 1984-06-07 1985-12-24 Victor Co Of Japan Ltd 情報記録媒体円盤
US5341362A (en) * 1984-08-20 1994-08-23 Sharp Kabushiki Kaisha Optical memory device having guide tracks shaped for increasing the quality of information signals
JPS6185653A (ja) * 1984-10-02 1986-05-01 Sharp Corp 光磁気メモリ素子
US4812218A (en) * 1985-02-11 1989-03-14 Gerber Arthur M Method of making a digital recording medium
US4855981A (en) * 1985-04-18 1989-08-08 Computer Services Corporation Method and device for reading out optically recorded data and compensating for a drastic change in the position of a line to be read
JPH0746429B2 (ja) * 1985-06-21 1995-05-17 オリンパス光学工業株式会社 光学式記録再生装置
JPS62204451A (ja) * 1986-03-03 1987-09-09 Daicel Chem Ind Ltd 光デイスク用プラスチツク基板とその製法
US5144552A (en) * 1986-07-25 1992-09-01 Ricoh Company, Ltd. Optical information storage medium having grooves and pits with specific depths, respectively
JPS6350933A (ja) * 1986-08-20 1988-03-03 Matsushita Electric Ind Co Ltd 平板状情報記録担体
CA1299747C (en) * 1986-09-20 1992-04-28 Hidefumi Suzuki Optical recording medium
JPS63107589A (ja) * 1986-10-23 1988-05-12 Nec Corp 光記録媒体
US4939717A (en) * 1986-10-31 1990-07-03 Matsushita Electric Industrial Co., Ltd. Method and apparatus for erasing and recording information using three power levels
US5224090A (en) * 1987-01-24 1993-06-29 Dai Nippon Insatsu Kabushiki Kaisha Optical recording members and method for production thereof
JP2671139B2 (ja) * 1987-12-10 1997-10-29 富士写真フイルム株式会社 情報記録媒体，光情報記録方法および光情報記録再生方法
JPH03219434A (ja) * 1988-12-27 1991-09-26 Canon Inc 光学的情報記録媒体
US5233583A (en) * 1990-12-19 1993-08-03 General Electric Company Tracking and reading system for an optical medium and medium for use therewith
US5293370A (en) * 1991-01-16 1994-03-08 Del Mar Avionics Method and apparatus for creating optical disc masters
US5404345A (en) * 1991-06-07 1995-04-04 Brother Kogyo Kabushiki Kaisha Optical recording medium and tracking servo circuit adapted therefor using wobbled pits
JP2693289B2 (ja) * 1991-08-09 1997-12-24 シャープ株式会社 光メモリ
JP3080739B2 (ja) * 1991-12-20 2000-08-28 日本電気株式会社 光学的情報記録媒体および光学的情報記録消去再生方法
DE19643214A1 (de) * 1996-10-19 1998-04-30 Fuji Magnetics Gmbh Leitstrukturen in optischen Speichermedien

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1447154A1 (de) * 1964-03-19 1969-04-10 Telefunken Gmbh Berlin U Ulm Kreisscheibenfoermiger Aufzeichnungstraeger fuer zwei Tonschriften
US3902010A (en) * 1972-02-15 1975-08-26 Canon Kk Information recording device with record having layers with different intensity sensitivity
JPS5760693B2 (en, 2012) * 1974-02-12 1982-12-21 Sony Corp
FR2271617B1 (en, 2012) * 1974-05-15 1976-10-15 Thomson Brandt
JPS5210102A (en) * 1975-07-15 1977-01-26 Canon Inc Recording medium
FR2321164A1 (fr) * 1975-08-13 1977-03-11 Thomson Csf Procede mecano-optique de diffusion de l'information, disque et dispositifs d'enregistrement et de lecture pour la mise en oeuvre de ce procede
JPS5528530A (en) * 1978-08-17 1980-02-29 Matsushita Electric Ind Co Ltd Optical information recording method

Also Published As

Publication number Publication date
US4385303A (en) 1983-05-24
DE3176435D1 (en) 1987-10-15
JPS56145535A (en) 1981-11-12
EP0038499B1 (en) 1987-09-09
EP0038499A1 (en) 1981-10-28

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