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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US3974505Nov 13, 1974Aug 10, 1976C. L. Instruments LimitedRecording device with plural recording discs with one deflected for improved viewing
US4020278Oct 16, 1975Apr 26, 1977Thomson-BrandtData carrier for optical read-out
US4037251May 13, 1975Jul 19, 1977Thomson-BrandtData carrier optically read out by transmission, and method of manufacturing said data carrier
US4038524Jun 17, 1975Jul 26, 1977Thomson-BrandtData carrier optically readable by transmission and method of manufacturing such a data carrier
US4039764Jun 17, 1975Aug 2, 1977Thomson-BrandtMethod for protecting a flexible record disc and disc so protected
US4041530Sep 30, 1975Aug 9, 1977U.S. Philips CorporationVideo disc with phase structure
US4044231May 27, 1975Aug 23, 1977Addressograph Multigraph CorporationSecure property document and method of manufacture
US4157931Jul 18, 1978Jun 12, 1979Thomson-BrandtProcess for producing information carrying discs
US4160269May 27, 1977Jul 3, 1979U.S. Philips CorporationApparatus for optically reading a phase-modulated optical record carrier
US4176377Nov 10, 1977Nov 27, 1979Eastman Kodak CompanyVideo disc configuration
US4225873Mar 27, 1978Sep 30, 1980MCA Disco-Vision, Inc.Recording and playback system
US4310919Jan 15, 1979Jan 12, 1982Discovision AssociatesOptical video disc structure
US4322759Oct 3, 1974Mar 30, 1982Method and apparatus for recording and reproducing video
US4322839Aug 24, 1979Mar 30, 1982Matsushita Electric Industrial Company, LimitedMethod and apparatus for recording and reproducing information on and from an optical disk
US4322841May 16, 1979Mar 30, 1982Licentia Patent-Verwaltungs G.m.b.HPlayback instrument for an information carrier disc
US4365258May 18, 1981Dec 21, 1982Eastman Kodak CompanyOptical disc unit, fabrication method and cooperating write and/or read apparatus
US4410968Sep 16, 1980Oct 18, 1983Thomas Lee SiweckiMethod and apparatus for recording on a disk supported deformable metallic film
US4417331Feb 17, 1981Nov 22, 1983Tokyo Shibaura Denki Kabushiki KaishaMethod for manufacturing an optical disc
US4441179Jun 19, 1981Apr 3, 1984Discovision AssociatesOptical video disc structure
US4450553Jan 26, 1979May 22, 1984U.S. Philips CorporationMultilayer information disc
US4456914May 10, 1982Jun 26, 1984Discovision AssociatesMethod and apparatus for storing information on a storage medium
US4517668Apr 29, 1983May 14, 1985Tokyo Shibaura Denki Kabushiki KaishaOptical disk with narrow guide tracks
US4535434Mar 23, 1981Aug 13, 1985Sony CorporationOptical disc and disc drive mechanism
US4566087May 22, 1984Jan 21, 1986Casdade Systems IncorporatedDigital optical disk system
US4583210Oct 2, 1985Apr 15, 1986Discovision AssociatesMethod and apparatus for storing and retrieving information
US4611318Oct 2, 1985Sep 9, 1986Discovision AssociatesMethod and apparatus for monitoring the storage of information on a storage medium
US4658311Apr 4, 1985Apr 14, 1987Teac CorporationMagnetic data transfer apparatus having a disk drive mechanism protected against leakage flux
US4733388Aug 8, 1986Mar 22, 1988Hitachi Maxell, Ltd.
Hitachi, Ltd.		Information recording disc
US4856108Jun 29, 1988Aug 8, 1989Thomson-CSFOptical arrangement and a reading apparatus including detection of data elements diffractive along entire extent
US4868808Sep 9, 1987Sep 19, 1989Thomson-CSFOptical disk arrangement with closed contours whose entire extent represents information
US4871404Oct 13, 1987Oct 3, 1989Pioneer Electronic CorporationMethod for producing an optical information recording disk
US4893297Mar 8, 1989Jan 9, 1990Discovision AssociatesDisc-shaped member
US4899329May 2, 1983Feb 6, 1990U.S. Philips CorporationOptically readable disc with a centering member fixed to a transparent substrate
US4903224Mar 16, 1988Feb 20, 1990Pioneer Electronic CorporationOptical information recording disk
US4989193Feb 13, 1990Jan 29, 1991Thomson-CSFOptical arrangement and a reading apparatus
US5007040Apr 4, 1989Apr 9, 1991Canon Kabushiki KaishaMagnetic recording and/or reproducing apparatus having a retaining mechanism for a disc-shaped magnetic record bearing medium
US5068846Apr 23, 1988Nov 26, 1991U.S. Philips CorporationReflective optical record carrier
US5117415Jul 29, 1991May 26, 1992Sharp Kabushiki KaishaOptical card, a card holder and an apparatus for recording, reproducing and erasing information on and from the optical card
US5132952Oct 19, 1990Jul 21, 1992Thomson-SASystem for reproducing pulse time modulated wave forms stored along a diffractive track
US5182743Nov 19, 1991Jan 26, 1993Thomson-CSFOptical disk arrangement with diffractive tracks allowing positional control
US5216664Oct 28, 1991Jun 1, 1993U.S. Philips CorporationOptically readable disc with a centering member fixed to a transparent substrate
US5307332Nov 4, 1992Apr 26, 1994Thomson-CSFOptical disk arrangement with diffractive tracks and a photoelectric assembly providing positional control information
US5373500Jan 3, 1994Dec 13, 1994Thomson-CSFOptical readable carrier with diffractive tracks containing information bearing irregularity
US5995481Sep 12, 1995Nov 30, 1999WEA Manufacturing Inc.Light-readable recording disc utilizing half-wavelength pits or bumps and system for reading such discs
US6046970Feb 13, 1998Apr 4, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable storage media, an apparatus for determining laser aging characteristics
US6049512Feb 13, 1998Apr 11, 2000International Business Machines CorporationIn a system for creating, reading and writing on rotatable information storage media, an apparatus for two-sided writing
US6081487Feb 13, 1998Jun 27, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for controlling laser positioning
US6081489Feb 13, 1998Jun 27, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for performing both read and write operations
US6088306Feb 13, 1998Jul 11, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for combined writing and reading operations
US6088309Feb 13, 1998Jul 11, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, a method for controlling vertical laser alignment
US6097677Feb 13, 1998Aug 1, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, a method for combined writing and reading operations
US6097681Feb 13, 1998Aug 1, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for determining angular position, .theta.
US6108282Feb 13, 1998Aug 22, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for multilayer laser source positioning
US6111830Feb 13, 1998Aug 29, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for determining linear and/or angular velocity
US6118633Jun 20, 1997Sep 12, 2000Iomega CorporationPlastic disk with hub and disk drive for using same
US6118740Feb 13, 1998Sep 12, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, a method for writing closely spaced information tracks
US6128262Feb 13, 1998Oct 3, 2000International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, a method for customizing said media with timing information
US6222813Feb 13, 1998Apr 24, 2001International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, an apparatus for controlling vertical laser alignment
US6232045Feb 13, 1998May 15, 2001International Business Machines CorporationSystem for creating, reading and writing on rotatable information storage media, a method for producing a recording blank
USRE42913May 22, 2009Nov 15, 2011Retro Reflective Optics, LLCOptical detection system

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