JPS595449A - Recording carrier for optical disk - Google Patents

Recording carrier for optical disk

Info

Publication number
JPS595449A
JPS595449A JP11433982A JP11433982A JPS595449A JP S595449 A JPS595449 A JP S595449A JP 11433982 A JP11433982 A JP 11433982A JP 11433982 A JP11433982 A JP 11433982A JP S595449 A JPS595449 A JP S595449A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
signal
formed
reproducing
auxiliary
waveform
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.)
Pending
Application number
JP11433982A
Other versions
JPH0348578B2 (en )
Inventor
Tetsuo Hosomi
Yukinori Okazaki
Original Assignee
Matsushita Electric Ind 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

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085Pits

Abstract

PURPOSE:To realize high-speed access, and also to prevent an intermittent noise from being mixed, by incorporating auxiliary information for reproducing the information into a continuous track like a concentric circle or a spiral. CONSTITUTION:A signal of a waveform is formed on the edge part of a track groove 13 and also a signal element 14 is formed by exposing a resist applied on a glass original disk by a continuous optical beam, and executing a modulation of stress to the optical beam by a signal containing an address signal. An auxiliary signal of the waveform is a phase pattern, and when a recording and reproducing signal is formed by a variable density pattern, the reproducing signal becomes the sum of them, and the S/N ratio is improved. The auxiliary signal and the address signal are not cut off at all, therefore, high-speed access can be realized, and also an intermittent noise is prevented.
JP11433982A 1982-06-30 1982-06-30 Expired - Lifetime JPH0348578B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11433982A JPH0348578B2 (en) 1982-06-30 1982-06-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11433982A JPH0348578B2 (en) 1982-06-30 1982-06-30

Publications (2)

Publication Number Publication Date
JPS595449A true true JPS595449A (en) 1984-01-12
JPH0348578B2 JPH0348578B2 (en) 1991-07-24

Family

ID=14635298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11433982A Expired - Lifetime JPH0348578B2 (en) 1982-06-30 1982-06-30

Country Status (1)

Country Link
JP (1) JPH0348578B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002768A1 (en) * 1984-10-22 1986-05-09 Sony Corporation Disc device
JPS61151843A (en) * 1984-12-25 1986-07-10 Nec Home Electronics Ltd Optical memory disk
JPS61158045A (en) * 1984-12-28 1986-07-17 Nec Home Electronics Ltd Light head
JPS61236046A (en) * 1985-04-10 1986-10-21 Sony Corp Discoid recording medium and its manufacturing device
JPH01165917U (en) * 1988-05-06 1989-11-21
EP0347858A2 (en) * 1988-06-20 1989-12-27 Sony Corporation Optical disc and recording and reproducing apparatus employing the optical disc
US5023856A (en) * 1986-10-06 1991-06-11 U.S. Philips Corporation Optically readable record carrier for recording information, apparatus for manufacturing such a record carrier, apparatus for recording information on such a record carrier, and apparatus for reading information recorded on such a record carrier
US5339301A (en) * 1986-10-06 1994-08-16 U.S. Philips Corporation Optically readable record carrier for recording information, method and apparatus for manufacturing such, apparatus for recording and reading information on a such a record carrier
US6091681A (en) * 1996-09-03 2000-07-18 U.S. Philips Corporation Information carrier, reading/writing device and reading device for writing and/or reading information blocks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015507A (en) * 1973-06-07 1975-02-19
JPS574041U (en) * 1980-06-09 1982-01-09
JPS58165794U (en) * 1982-04-27 1983-11-04
JPS58165742U (en) * 1982-04-27 1983-11-04

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS574041B2 (en) * 1974-10-14 1982-01-23

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015507A (en) * 1973-06-07 1975-02-19
JPS574041U (en) * 1980-06-09 1982-01-09
JPS58165794U (en) * 1982-04-27 1983-11-04
JPS58165742U (en) * 1982-04-27 1983-11-04

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002768A1 (en) * 1984-10-22 1986-05-09 Sony Corporation Disc device
JPS61151843A (en) * 1984-12-25 1986-07-10 Nec Home Electronics Ltd Optical memory disk
JPS61158045A (en) * 1984-12-28 1986-07-17 Nec Home Electronics Ltd Light head
JPS61236046A (en) * 1985-04-10 1986-10-21 Sony Corp Discoid recording medium and its manufacturing device
US5023856A (en) * 1986-10-06 1991-06-11 U.S. Philips Corporation Optically readable record carrier for recording information, apparatus for manufacturing such a record carrier, apparatus for recording information on such a record carrier, and apparatus for reading information recorded on such a record carrier
US5339301A (en) * 1986-10-06 1994-08-16 U.S. Philips Corporation Optically readable record carrier for recording information, method and apparatus for manufacturing such, apparatus for recording and reading information on a such a record carrier
JPH01165917U (en) * 1988-05-06 1989-11-21
EP0347858A2 (en) * 1988-06-20 1989-12-27 Sony Corporation Optical disc and recording and reproducing apparatus employing the optical disc
US5185732A (en) * 1988-06-20 1993-02-09 Sony Corporation Recording medium and recording and reproducing apparatus employing the recording medium
US6091681A (en) * 1996-09-03 2000-07-18 U.S. Philips Corporation Information carrier, reading/writing device and reading device for writing and/or reading information blocks

Also Published As

Publication number Publication date Type
JPH0348578B2 (en) 1991-07-24 grant

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