JPS6142339B2 - - Google Patents

Info

Publication number
JPS6142339B2
JPS6142339B2 JP53157462A JP15746278A JPS6142339B2 JP S6142339 B2 JPS6142339 B2 JP S6142339B2 JP 53157462 A JP53157462 A JP 53157462A JP 15746278 A JP15746278 A JP 15746278A JP S6142339 B2 JPS6142339 B2 JP S6142339B2
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
JP53157462A
Other languages
Japanese (ja)
Other versions
JPS5587349A (en
Inventor
Masanori Ogino
Tooru Fujishima
Jun Matsumoto
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53157462A priority Critical patent/JPS6142339B2/ja
Publication of JPS5587349A publication Critical patent/JPS5587349A/ja
Priority claimed from US06/363,147 external-priority patent/US4416002A/en
Publication of JPS6142339B2 publication Critical patent/JPS6142339B2/ja
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02Analogue recording or reproducing
    • G11B20/06Angle-modulation recording
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00Head arrangements not specific to the method of recording or reproducing
    • G11B21/02Driving or moving of heads
    • G11B21/08Track changing or selecting during transducing operation
    • G11B21/081Access to indexed tracks or parts of continuous track
    • G11B21/083Access to indexed tracks or parts of continuous track on discs
    • G11B21/085Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00Head arrangements not specific to the method of recording or reproducing
    • G11B21/02Driving or moving of heads
    • G11B21/10Track finding or aligning by moving the head Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106Track finding or aligning by moving the head Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005Reproducing at a different information rate from the information rate of recording
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/022Electronic editing of analogue information signals, e.g. audio or video signals
    • G11B27/026Electronic editing of analogue information signals, e.g. audio or video signals on discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/24Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • 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
    • G11B7/004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0901Disposition 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 for track following only
    • 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
JP53157462A 1978-12-22 1978-12-22 Expired JPS6142339B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53157462A JPS6142339B2 (fr) 1978-12-22 1978-12-22

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP53157462A JPS6142339B2 (fr) 1978-12-22 1978-12-22
US06/363,147 US4416002A (en) 1978-04-10 1982-03-29 Method and apparatus for high-density recording and reproduction

Publications (2)

Publication Number Publication Date
JPS5587349A JPS5587349A (en) 1980-07-02
JPS6142339B2 true JPS6142339B2 (fr) 1986-09-20

Family

ID=15650181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53157462A Expired JPS6142339B2 (fr) 1978-12-22 1978-12-22

Country Status (1)

Country Link
JP (1) JPS6142339B2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0535005Y2 (fr) * 1989-01-09 1993-09-06

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051311B2 (fr) * 1980-12-22 1985-11-13 Victor Company Of Japan

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046429A (fr) * 1973-08-31 1975-04-25
JPS53116120A (en) * 1977-03-16 1978-10-11 Philips Nv Method and device for controlling position of writing or reading head
JPS53125816A (en) * 1977-04-09 1978-11-02 Victor Co Of Japan Ltd Recording system for information recorded medium disc

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046429A (fr) * 1973-08-31 1975-04-25
JPS53116120A (en) * 1977-03-16 1978-10-11 Philips Nv Method and device for controlling position of writing or reading head
JPS53125816A (en) * 1977-04-09 1978-11-02 Victor Co Of Japan Ltd Recording system for information recorded medium disc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0535005Y2 (fr) * 1989-01-09 1993-09-06

Also Published As

Publication number Publication date
JPS5587349A (en) 1980-07-02

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