CN2054931U - 带有环状突出部分的激光唱盘 - Google Patents

带有环状突出部分的激光唱盘 Download PDF

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Publication number
CN2054931U
CN2054931U CN89213609U CN89213609U CN2054931U CN 2054931 U CN2054931 U CN 2054931U CN 89213609 U CN89213609 U CN 89213609U CN 89213609 U CN89213609 U CN 89213609U CN 2054931 U CN2054931 U CN 2054931U
Authority
CN
China
Prior art keywords
signal
disc
record
substrate
disc record
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
CN89213609U
Other languages
English (en)
Chinese (zh)
Inventor
安大成
金基裕
李衡焕
赵源政
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.)
SKC Co Ltd
Original Assignee
SKC 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 SKC Co Ltd filed Critical SKC Co Ltd
Publication of CN2054931U publication Critical patent/CN2054931U/zh
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • 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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
CN89213609U 1988-07-09 1989-07-05 带有环状突出部分的激光唱盘 Expired - Lifetime CN2054931U (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR880011170 1988-07-09
KK11170 1988-07-09

Publications (1)

Publication Number Publication Date
CN2054931U true CN2054931U (zh) 1990-03-21

Family

ID=31492730

Family Applications (1)

Application Number Title Priority Date Filing Date
CN89213609U Expired - Lifetime CN2054931U (zh) 1988-07-09 1989-07-05 带有环状突出部分的激光唱盘

Country Status (3)

Country Link
JP (1) JPH0212770U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CN (1) CN2054931U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE8815125U1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060292U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-10-01 1975-06-03
JP2768862B2 (ja) * 1991-12-16 1998-06-25 シャープ株式会社 光ディスクおよびその表面処理方法
US5453975A (en) * 1991-12-16 1995-09-26 Sharp Kabushiki Kaisha Optical disc with surface coating and manufacturing method therefor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344724Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-06-18 1978-10-26
JPS5720123A (en) * 1980-07-10 1982-02-02 Meidensha Electric Mfg Co Ltd Distance relay

Also Published As

Publication number Publication date
DE8815125U1 (de) 1989-01-19
JPH0212770U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-01-26

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
RN01 Renewal of patent term
C17 Cessation of patent right
CX01 Expiry of patent term