JPS5280007A - Video disc - Google Patents

Video disc

Info

Publication number
JPS5280007A
JPS5280007A JP50157200A JP15720075A JPS5280007A JP S5280007 A JPS5280007 A JP S5280007A JP 50157200 A JP50157200 A JP 50157200A JP 15720075 A JP15720075 A JP 15720075A JP S5280007 A JPS5280007 A JP S5280007A
Authority
JP
Japan
Prior art keywords
video disc
track
recording
accuracy
becomes
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
JP50157200A
Other languages
Japanese (ja)
Inventor
Chiaki Kojima
Takashi Otobe
Yutaka Oki
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP50157200A priority Critical patent/JPS5280007A/en
Priority to GB51505/76A priority patent/GB1565829A/en
Priority to CA268,574A priority patent/CA1085050A/en
Priority to DE19762658677 priority patent/DE2658677A1/en
Priority to FR7639100A priority patent/FR2336766A1/en
Priority to NL7614450A priority patent/NL7614450A/en
Publication of JPS5280007A publication Critical patent/JPS5280007A/en
Pending 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical 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
    • G11B7/128—Modulators
    • 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
    • G11B23/0028—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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors
    • 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
    • G11B7/0901—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 for track following only
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks

Abstract

PURPOSE: To improve the accuracy of track pitches in recording of video signals by providing an auxiliary track which becomes a reference to information tracks.
COPYRIGHT: (C)1977,JPO&Japio
JP50157200A 1975-12-26 1975-12-26 Video disc Pending JPS5280007A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP50157200A JPS5280007A (en) 1975-12-26 1975-12-26 Video disc
GB51505/76A GB1565829A (en) 1975-12-26 1976-12-09 Record medium and method and apparatus for recording information from said record medium
CA268,574A CA1085050A (en) 1975-12-26 1976-12-22 Method for recording information on a rotatable medium
DE19762658677 DE2658677A1 (en) 1975-12-26 1976-12-23 INFORMATION CARRIERS, METHODS FOR ITS PRODUCTION AND METHODS AND DEVICES FOR RECORDING AND / OR REPRODUCING INFORMATION WITH THE HELP OF THE INFORMATION CARRIERS
FR7639100A FR2336766A1 (en) 1975-12-26 1976-12-24 RECORDING MEDIA, ITS MANUFACTURING AND APPLICATION
NL7614450A NL7614450A (en) 1975-12-26 1976-12-27 ROTATABLE RECORDING MEDIA FOR RECORDING AND DISPLAYING SIGNAL INFORMATION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50157200A JPS5280007A (en) 1975-12-26 1975-12-26 Video disc

Publications (1)

Publication Number Publication Date
JPS5280007A true JPS5280007A (en) 1977-07-05

Family

ID=15644380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50157200A Pending JPS5280007A (en) 1975-12-26 1975-12-26 Video disc

Country Status (6)

Country Link
JP (1) JPS5280007A (en)
CA (1) CA1085050A (en)
DE (1) DE2658677A1 (en)
FR (1) FR2336766A1 (en)
GB (1) GB1565829A (en)
NL (1) NL7614450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130240A (en) * 1981-02-05 1982-08-12 Olympus Optical Co Ltd Optical information recording and reproducing device and information recording medium for it

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074085A (en) * 1976-03-31 1978-02-14 Eli S. Jacobs Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks
DE3066828D1 (en) * 1979-07-16 1984-04-12 Discovision Ass Video player/recorder for recording on a blank disk and method for home recording
US4424539A (en) * 1981-12-23 1984-01-03 International Business Machines Corporation Magnetic disk-control track read through envelope
GB2188474A (en) * 1986-03-27 1987-09-30 Philips Electronic Associated Electronic digital storage apparatus
GB8624444D0 (en) * 1986-10-11 1986-11-12 London Weekend Television Ltd Optical disc
JPH04305821A (en) * 1991-04-02 1992-10-28 Sony Corp Disk reproducing device
JP3063230B2 (en) * 1991-05-31 2000-07-12 ソニー株式会社 Rewritable disk and disk device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183948B (en) * 1961-01-12 1964-12-23 Telefunken Patent Memories, especially micro memories for information
US3361873A (en) * 1962-05-07 1968-01-02 Minnesota Mining & Mfg Disc recording system
US3479664A (en) * 1965-12-28 1969-11-18 Data Products Corp Servo positioning system
NL174591C (en) * 1973-02-09 1984-07-02 Philips Nv DISC REGISTRATION CARRIER BODY.
NL7414695A (en) * 1973-11-09 1975-05-13 Hitachi Ltd AUTOMATIC FOCUSING DEVICE.
US3881184A (en) * 1974-05-28 1975-04-29 Ibm Adaptive digital servo system
FR2315142A1 (en) * 1975-06-17 1977-01-14 Pyral Soc Transducer head guide system - using additional guide track associated with magnetic recording track

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130240A (en) * 1981-02-05 1982-08-12 Olympus Optical Co Ltd Optical information recording and reproducing device and information recording medium for it
JPH0345456B2 (en) * 1981-02-05 1991-07-11 Olympus Optical Co

Also Published As

Publication number Publication date
NL7614450A (en) 1977-06-28
FR2336766A1 (en) 1977-07-22
CA1085050A (en) 1980-09-02
GB1565829A (en) 1980-04-23
FR2336766B1 (en) 1984-09-14
DE2658677A1 (en) 1977-07-14

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