JPS5732416B2 - - Google Patents

Info

Publication number
JPS5732416B2
JPS5732416B2 JP1443877A JP1443877A JPS5732416B2 JP S5732416 B2 JPS5732416 B2 JP S5732416B2 JP 1443877 A JP1443877 A JP 1443877A JP 1443877 A JP1443877 A JP 1443877A JP S5732416 B2 JPS5732416 B2 JP S5732416B2
Authority
JP
Japan
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
Application number
JP1443877A
Other languages
Japanese (ja)
Other versions
JPS5399923A (en
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 filed Critical
Priority to JP1443877A priority Critical patent/JPS5399923A/en
Priority to NLAANVRAGE7801387,A priority patent/NL173104C/en
Priority to FR7803570A priority patent/FR2384316B1/en
Priority to NLAANVRAGE7801440,A priority patent/NL173797C/en
Priority to CA296,450A priority patent/CA1106061A/en
Priority to FR7803571A priority patent/FR2382742B1/en
Priority to GB5035/78A priority patent/GB1600432A/en
Priority to CA000296451A priority patent/CA1119296A/en
Priority to GB5033/78A priority patent/GB1600431A/en
Priority to DE2805322A priority patent/DE2805322C2/en
Priority to DE2805323A priority patent/DE2805323C2/en
Priority to FR7819900A priority patent/FR2384317B1/en
Publication of JPS5399923A publication Critical patent/JPS5399923A/en
Priority to US06/055,752 priority patent/US4327430A/en
Priority to US06/186,297 priority patent/US4420827A/en
Publication of JPS5732416B2 publication Critical patent/JPS5732416B2/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
    • G11B7/24085—Pits
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
JP1443877A 1977-02-09 1977-02-12 Grooveless medium disc for imformation recording Granted JPS5399923A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
JP1443877A JPS5399923A (en) 1977-02-12 1977-02-12 Grooveless medium disc for imformation recording
NLAANVRAGE7801387,A NL173104C (en) 1977-02-09 1978-02-07 ROTARY TYPE INFORMATION SIGNAL RECORD MEDIUM AND DEVICE FOR RECORDING INFORMATION SIGNALS THEREOF.
CA000296451A CA1119296A (en) 1977-02-09 1978-02-08 Information signal recording medium of the rotary type
NLAANVRAGE7801440,A NL173797C (en) 1977-02-09 1978-02-08 INFORMATION SIGNAL RECORD MEDIUM WITH A FLAT SURFACE, AND REGISTRATOR FOR SUCH A MEDIUM.
CA296,450A CA1106061A (en) 1977-02-09 1978-02-08 Rotary recording medium with intermediate pits
FR7803571A FR2382742B1 (en) 1977-02-09 1978-02-08 MEDIUM FOR RECORDING VIDEO AND AUDIO SIGNALS AND DEVICE FOR MAKING RECORDINGS THEREOF
GB5035/78A GB1600432A (en) 1977-02-09 1978-02-08 Information signal recording medium of rotary type and apparatus for recording information signal thereon
FR7803570A FR2384316B1 (en) 1977-02-09 1978-02-08 RECORDING MEDIUM FOR VIDEO AND AUDIO SIGNALS AND DEVICE FOR MAKING RECORDINGS ON SUCH MEDIUM
GB5033/78A GB1600431A (en) 1977-02-09 1978-02-08 Information signal recording medium of rotary type and apparatus for recording information signal thereon
DE2805322A DE2805322C2 (en) 1977-02-09 1978-02-09 Rotatable information signal recording medium and recording arrangement for producing the information signal recording medium
DE2805323A DE2805323C2 (en) 1977-02-09 1978-02-09 Rotatable information signal recording medium and recording arrangement for the recording medium
FR7819900A FR2384317B1 (en) 1977-02-09 1978-07-04 DEVICE FOR RECORDING, IN PARTICULAR OF INFORMATION SIGNALS, ON ROTATING MEDIA
US06/055,752 US4327430A (en) 1977-02-09 1979-07-06 Information signal recording medium of rotary type with overlapped tracks
US06/186,297 US4420827A (en) 1977-02-09 1980-09-11 Disc reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1443877A JPS5399923A (en) 1977-02-12 1977-02-12 Grooveless medium disc for imformation recording

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP17511881A Division JPS57103142A (en) 1981-10-31 1981-10-31 Grooveless information recording medium disk

Publications (2)

Publication Number Publication Date
JPS5399923A JPS5399923A (en) 1978-08-31
JPS5732416B2 true JPS5732416B2 (en) 1982-07-10

Family

ID=11861015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1443877A Granted JPS5399923A (en) 1977-02-09 1977-02-12 Grooveless medium disc for imformation recording

Country Status (1)

Country Link
JP (1) JPS5399923A (en)

Also Published As

Publication number Publication date
JPS5399923A (en) 1978-08-31

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