JPS6142751A - 情報読取装置 - Google Patents

情報読取装置

Info

Publication number
JPS6142751A
JPS6142751A JP59164039A JP16403984A JPS6142751A JP S6142751 A JPS6142751 A JP S6142751A JP 59164039 A JP59164039 A JP 59164039A JP 16403984 A JP16403984 A JP 16403984A JP S6142751 A JPS6142751 A JP S6142751A
Authority
JP
Japan
Prior art keywords
recording medium
output
signal
magneto
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
JP59164039A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0513338B2 (enrdf_load_stackoverflow
Inventor
Kenji Torasawa
虎沢　研示
Seiji Murata
村田　誠司
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.)
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 JP59164039A priority Critical patent/JPS6142751A/ja
Publication of JPS6142751A publication Critical patent/JPS6142751A/ja
Publication of JPH0513338B2 publication Critical patent/JPH0513338B2/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • 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
    • G11B11/10532—Heads
    • 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
    • G11B7/13—Optical detectors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
JP59164039A 1984-08-03 1984-08-03 情報読取装置 Granted JPS6142751A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59164039A JPS6142751A (ja) 1984-08-03 1984-08-03 情報読取装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59164039A JPS6142751A (ja) 1984-08-03 1984-08-03 情報読取装置

Publications (2)

Publication Number Publication Date
JPS6142751A true JPS6142751A (ja) 1986-03-01
JPH0513338B2 JPH0513338B2 (enrdf_load_stackoverflow) 1993-02-22

Family

ID=15785636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59164039A Granted JPS6142751A (ja) 1984-08-03 1984-08-03 情報読取装置

Country Status (1)

Country Link
JP (1) JPS6142751A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150148A (ja) * 1984-12-24 1986-07-08 Nippon Kogaku Kk <Nikon> 複合信号記録媒体の再生装置
JPS61158055A (ja) * 1984-12-29 1986-07-17 Canon Inc 光学式情報再生装置
JPS61158056A (ja) * 1984-12-29 1986-07-17 Canon Inc 光学式情報再生装置
EP0337744A2 (en) 1988-04-12 1989-10-18 Nippon Shokubai Co., Ltd. Ultraviolet-stable copolymer. Process for producing the same, and coating composition containing the same
US5202874A (en) * 1988-11-17 1993-04-13 Deutsche Thomson-Brandt Gmbh Circuit arrangement for identifying the type of an optical record carrier
US5539710A (en) * 1992-02-28 1996-07-23 Hitachi, Ltd. Video optical disk system compatible with both read only and writable optical disks having the same recording format
US6243341B1 (en) 1997-08-26 2001-06-05 Sanyo Electric Co., Ltd. Method of distinguishing disks having nearly the same reflectance

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150148A (ja) * 1984-12-24 1986-07-08 Nippon Kogaku Kk <Nikon> 複合信号記録媒体の再生装置
JPS61158055A (ja) * 1984-12-29 1986-07-17 Canon Inc 光学式情報再生装置
JPS61158056A (ja) * 1984-12-29 1986-07-17 Canon Inc 光学式情報再生装置
EP0337744A2 (en) 1988-04-12 1989-10-18 Nippon Shokubai Co., Ltd. Ultraviolet-stable copolymer. Process for producing the same, and coating composition containing the same
US5202874A (en) * 1988-11-17 1993-04-13 Deutsche Thomson-Brandt Gmbh Circuit arrangement for identifying the type of an optical record carrier
US5539710A (en) * 1992-02-28 1996-07-23 Hitachi, Ltd. Video optical disk system compatible with both read only and writable optical disks having the same recording format
US6243341B1 (en) 1997-08-26 2001-06-05 Sanyo Electric Co., Ltd. Method of distinguishing disks having nearly the same reflectance

Also Published As

Publication number Publication date
JPH0513338B2 (enrdf_load_stackoverflow) 1993-02-22

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term