SE7813460A - video Turntable - Google Patents

video Turntable

Info

Publication number
SE7813460A
SE7813460A SE7813460A SE7813460A SE7813460A SE 7813460 A SE7813460 A SE 7813460A SE 7813460 A SE7813460 A SE 7813460A SE 7813460 A SE7813460 A SE 7813460A SE 7813460 A SE7813460 A SE 7813460A
Authority
SE
Sweden
Prior art keywords
information track
described
light
information
signals
Prior art date
Application number
SE7813460A
Other languages
Swedish (sv)
Inventor
L Ceshkovsky
W R Dakin
Original Assignee
Mca Disco Vision
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
Family has litigation
Priority to US89067078A priority Critical
Application filed by Mca Disco Vision filed Critical Mca Disco Vision
Publication of SE7813460A publication Critical patent/SE7813460A/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25396978&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE7813460(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20Driving; Starting; Stopping; Control thereof
    • G11B19/28Speed controlling, regulating, or indicating
    • 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
    • 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
    • G11B7/005Reproducing
    • 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
    • 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
    • G11B7/085Disposition 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
    • G11B7/08505Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08511Methods for track change, selection or preliminary positioning by moving the head with focus pull-in 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
    • G11B7/08Disposition 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
    • 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
    • G11B7/0941Methods and circuits for servo gain or phase compensation during operation
    • 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
    • G11B7/0908Disposition 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 focusing only

Abstract

An optical apparatus is described for use with a video disc (7) having frequency modulated video information (9) recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions (10, 11). A focused light beam (4) is caused to be positioned over the centre of an information track and the light reflected from the information track is gathered by an objective lens (17) for application to electronic circuitry (30) for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the centre of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track. FM processing means are described for reconstructing the recovered frequency modulated video information such that the ratio between the amplitude of the signals as recorded is essentially the same in the signals as recovered from the video disc member. Further servo means are described for handling the selective change of the intersection of the reading beam with the video disc member in a predetermined preferred mode of operation.
SE7813460A 1978-03-27 1978-12-29 video Turntable SE7813460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US89067078A true 1978-03-27 1978-03-27

Publications (1)

Publication Number Publication Date
SE7813460A true SE7813460A (en) 1979-09-28

Family

ID=25396978

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7813460A SE7813460A (en) 1978-03-27 1978-12-29 video Turntable

Country Status (10)

Country Link
EP (6) EP0036222B1 (en)
JP (13) JPH033289B2 (en)
CA (1) CA1140675A (en)
DE (2) DE2911859C2 (en)
DK (1) DK20079A (en)
HK (5) HK50686A (en)
MY (3) MY8700045A (en)
NL (1) NL7900352A (en)
NO (1) NO151872C (en)
SE (1) SE7813460A (en)

Families Citing this family (41)

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JPH0140404B2 (en) * 1979-09-03 1989-08-29 Matsushita Electric Ind Co Ltd
JPS6048809B2 (en) * 1979-10-16 1985-10-29 Universal Pioneer Corp
JPS56119942A (en) * 1980-02-27 1981-09-19 Fujitsu Ltd Track access system optical disc device
JPS56120926A (en) * 1980-02-28 1981-09-22 Daihen Corp Indicating device for measured color
JPH0644347B2 (en) * 1980-11-27 1994-06-08 松下電器産業株式会社 Optical recording and reproducing apparatus
JPS624906Y2 (en) * 1981-02-06 1987-02-04
JPS57133525A (en) * 1981-02-07 1982-08-18 Olympus Optical Co Ltd Automatic focusing system of optical information reader
US4414655A (en) * 1981-03-31 1983-11-08 Discovision Associates Scanning beam control system
JPH0227734B2 (en) * 1981-05-11 1990-06-19 Sony Corp Deisukusaiseisochi
JPS586531A (en) * 1981-07-01 1983-01-14 Teac Co Recorder or reproducer
US4402061A (en) * 1981-10-15 1983-08-30 Burroughs Corporation Preformatted optical media for use in an optical memory system
US4417330A (en) * 1981-10-15 1983-11-22 Burroughs Corporation Optical memory system providing improved focusing control
JPS5875343U (en) * 1981-11-16 1983-05-21
JPS6360448B2 (en) * 1981-12-10 1988-11-24
JPS6343814B2 (en) * 1981-12-11 1988-09-01 Teac Corp
JPH0410129B2 (en) * 1982-01-09 1992-02-24
DE3348470C2 (en) * 1982-01-16 1997-12-18 Sony Corp Fast positioning pick-up system for optical play-back appts.
US4432083A (en) * 1982-02-17 1984-02-14 Burroughs Corporation Optical memory system having track following
FR2522269B1 (en) * 1982-02-26 1985-03-01 Pasteur Institut
US4536863A (en) * 1982-04-15 1985-08-20 Discovision Associates Method and apparatus for recovering information from a videodisc
EP0095852A1 (en) * 1982-05-19 1983-12-07 BURROUGHS CORPORATION (a Michigan corporation) Focusing control circuitry for an optical memory system
EP0096969B1 (en) * 1982-05-19 1986-12-30 BURROUGHS CORPORATION (a Delaware corporation) Optical memory system having improved positioning and focusing control circuitry
JPS5928828U (en) * 1982-08-17 1984-02-22
JPS6256577B2 (en) * 1982-09-02 1987-11-26 Mitsubishi Electric Corp
FR2591016B1 (en) * 1982-10-15 1988-10-21 Pioneer Electronic Corp control system of the drive disk
JPH0425611B2 (en) * 1983-04-14 1992-05-01 Mitsubishi Electric Corp
JPH0142818Y2 (en) * 1983-06-24 1989-12-13
JPS6077023U (en) * 1983-11-01 1985-05-29
JPH0522296B2 (en) * 1983-12-20 1993-03-29 Canon Kk
JPH0473219B2 (en) * 1984-05-25 1992-11-20 Sony Corp
JPH0473221B2 (en) * 1984-07-10 1992-11-20 Tokyo Shibaura Electric Co
JPS6164621U (en) * 1984-09-29 1986-05-02
DE3508525A1 (en) * 1985-03-09 1986-09-11 Thomson Brandt Gmbh Focus-such-device for contactless oversampling
DE3783114T2 (en) * 1986-09-20 1993-04-22 Pioneer Electronic Corp Servo mechanism for a recording disk-reproducing arrangement.
JP2614482B2 (en) * 1988-03-11 1997-05-28 三洋電機株式会社 Signal reproduction circuit of the optical disc player
JP2642672B2 (en) * 1988-06-29 1997-08-20 富士通株式会社 Optical disk device
JP2570915B2 (en) * 1991-04-12 1997-01-16 株式会社日立製作所 Light spot control method
JPH0828076B2 (en) * 1991-04-15 1996-03-21 松下電器産業株式会社 Track interlaced scanning device
DE4211282A1 (en) * 1992-04-03 1993-10-07 Thomson Brandt Gmbh Correcting tangential errors of optical head of disc system - determining static tangential errors and storing correction values in memory accessed for each radial position
US6278565B1 (en) * 1992-11-30 2001-08-21 Samsung Electronics Co., Ltd. Disk read-out circuit employing separate servo data and information data filters
JP5651282B2 (en) 2007-07-03 2015-01-07 Ykk株式会社 Buckle

Family Cites Families (37)

* Cited by examiner, † Cited by third party
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JPS507050Y2 (en) * 1971-08-04 1975-03-01
NL173343C (en) * 1972-03-29 1984-01-02 Philips Nv An apparatus for reading a disc-shaped record carrier with in optical form-coded picture and / or sound signals.
US3829622A (en) * 1972-10-24 1974-08-13 Mca Disco Vision Video disc player with variably biased pneumatic head
NL174591C (en) * 1973-02-09 1984-07-02 Philips Nv A disk recording medium body.
FR2222718B1 (en) * 1973-03-19 1977-02-11 Thomson Brandt
JPS562832B2 (en) * 1973-07-05 1981-01-21
DE2445333A1 (en) * 1973-10-01 1975-04-10 Philips Nv Opto-electronic system for determining a deviation between the actual position and the desired position of a plane in an optical imaging system
US4037252A (en) * 1973-11-10 1977-07-19 U.S. Philips Corporation Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking
FR2251876B1 (en) * 1973-11-16 1977-09-23 Thomson Brandt
NL7402078A (en) * 1974-02-15 1975-08-19 Philips Nv An apparatus for reading a disc-shaped record carrier.
US3997715A (en) * 1974-03-25 1976-12-14 Mca Disco-Vision, Inc. Focusing system for videodisc player
DE2418195A1 (en) * 1974-04-13 1975-11-06 Bosch Gmbh Robert A method for guiding a light beam on a signal trace
JPS511025A (en) * 1974-06-23 1976-01-07 Canon Kk
US3934262A (en) * 1974-07-02 1976-01-20 Zenith Radio Corporation Video disc and method of playback
JPS5122404A (en) * 1974-08-17 1976-02-23 Teac Corp
AR205839A1 (en) * 1974-09-30 1976-06-07 Mca Disco Vision Servodisposicion to go optically and simultaneously read a stored channel information in a video disk
US3965482A (en) * 1974-11-12 1976-06-22 Rca Corporation Velocity correction circuit for video discs
US3967311A (en) * 1974-11-12 1976-06-29 Rca Corporation Velocity correction for video discs
NL182257C (en) * 1974-12-23 1988-02-01 Philips Nv An apparatus for reading a planar reflecting record carrier on which information is recorded in an optically readable structure.
JPS6032386B2 (en) * 1975-02-19 1985-07-27 Matsushita Electric Ind Co Ltd
NL177157C (en) * 1975-02-28 1985-08-01 Philips Nv A device for reading a plane of a record carrier having an optically readable information structure.
DE2521821A1 (en) * 1975-05-16 1976-11-25 Bosch Gmbh Robert Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction
JPS6052495B2 (en) * 1975-08-14 1985-11-19 Victor Company Of Japan
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JPS5922289B2 (en) * 1975-11-20 1984-05-25 Sony Corp
JPS5817975B2 (en) * 1975-12-10 1983-04-11 Mansei Kogyo Kk
GB1577133A (en) * 1976-03-19 1980-10-22 Rca Corp Video information record and playback apparatus
GB1572346A (en) * 1976-03-19 1980-07-30 Rca Corp Velocity and phase control for a disc recording and reproducing apparatus
GB1585547A (en) * 1976-04-08 1981-03-04 Victor Company Of Japan Information signal reproducing system
US4331976A (en) * 1976-04-08 1982-05-25 Victor Company Of Japan, Ltd. High density recording system using side-by-side information and servo tracks
JPS52153403A (en) * 1976-06-16 1977-12-20 Hitachi Ltd Address record reproduction
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JPS533305A (en) * 1976-06-30 1978-01-13 Mitsubishi Electric Corp Optical reproduction device

Also Published As

Publication number Publication date
MY8700046A (en) 1987-12-31
JPH03162723A (en) 1991-07-12
DE2967537D1 (en) 1985-12-05
EP0035803A3 (en) 1982-02-24
JPS6259520B2 (en) 1987-12-11
EP0036222A3 (en) 1982-02-24
JPH076378A (en) 1995-01-10
HK18089A (en) 1989-03-10
JPS54128707A (en) 1979-10-05
HK50686A (en) 1986-07-11
EP0035803A2 (en) 1981-09-16
MY8700045A (en) 1987-12-31
JPH0434208B2 (en) 1992-06-05
JP2763084B2 (en) 1998-06-11
JPS6323231A (en) 1988-01-30
JPH08147719A (en) 1996-06-07
NO790171L (en) 1979-09-28
JP2617270B2 (en) 1997-06-04
JPH0727646B2 (en) 1995-03-29
JPS6356612B2 (en) 1988-11-08
MY8700035A (en) 1987-12-31
JPS6111968A (en) 1986-01-20
EP0035288A2 (en) 1981-09-09
JPH0795516A (en) 1995-04-07
DE2911859A1 (en) 1979-10-04
DE2911859C2 (en) 1988-05-11
CA1140675A (en) 1983-02-01
NO151872C (en) 1985-06-19
HK50786A (en) 1986-07-11
HK50586A (en) 1986-07-11
JPS61930A (en) 1986-01-06
JPS6367255B2 (en) 1988-12-23
JPH0329118A (en) 1991-02-07
JPH063646B2 (en) 1994-01-12
JPS6323230A (en) 1988-01-30
JPS6111969A (en) 1986-01-20
JP2594412B2 (en) 1997-03-26
HK18189A (en) 1989-03-10
EP0035289A3 (en) 1982-03-10
CA1140675A1 (en)
NO151872B (en) 1985-03-11
EP0036222A2 (en) 1981-09-23
JPS615692A (en) 1986-01-11
EP0035289A2 (en) 1981-09-09
EP0004476A1 (en) 1979-10-03
JPH033289B2 (en) 1991-01-18
JPH06325375A (en) 1994-11-25
EP0036222B1 (en) 1985-07-10
EP0035288A3 (en) 1982-03-10
EP0035287A2 (en) 1981-09-09
EP0035803B1 (en) 1985-03-06
EP0035288B1 (en) 1985-09-11
EP0004476B1 (en) 1985-10-30
DK20079A (en) 1979-09-28
EP0035287A3 (en) 1982-04-14
JP2500226B2 (en) 1996-05-29
NL7900352A (en) 1979-10-01
EP0035287B1 (en) 1985-06-19

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