Patents
Patents for G11B 7 - Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor (102,715)
06/1995
06/20/1995CA2031672C Information processing device and optical disk memory used therefor
06/20/1995CA2013336C Ultraviolet light curable composition and use thereof
06/14/1995EP0657884A1 Magnetic recording medium, method of producing it, and magnetic recording apparatus using it
06/14/1995EP0657883A2 Information reproducing apparatus and method
06/14/1995EP0657879A2 Magnetooptic disk player
06/14/1995EP0657877A1 "Track seek method and device for use with an optical information recording and reproducing apparatus"
06/14/1995EP0657771A1 Digital sound recording on motion picture film
06/14/1995EP0656833A1 Data-recordal using laser beams.
06/14/1995EP0288570B1 Draw type optical recording medium
06/14/1995DE4434928A1 Wandler-Positionssensor mit gespeicherter Position, Überweg und geringer mechanischer Spannung Transducer position sensor with stored position, crossing and low mechanical stress
06/13/1995US5425016 Digital laser encoder/recorder/player, utilizing ellipsoidal memory medium
06/13/1995US5425015 Film contains a bis(thienylethene anhydride)-type compound which has a ring opening/ring closing portion stimulated by light
06/13/1995US5425014 Apparatus for constant angular velocity reading of constant linear velocity disks
06/13/1995US5425013 Relative position sensing calibration for optical storage device
06/13/1995US5425012 Track detector circuit for detecting a track when at least either optical recording or regenaration is performed on a card-like information recording medium
06/13/1995US5425011 Semiconductor integrated circuit incorporating photo detectors
06/13/1995US5425010 Optical information recording/reproducing apparatus having photo detecting element disposed in a two-dimensional array
06/13/1995US5424389 Polycarbonate copolymer of spirobisindan and bisphenol-A, method of preparing such a copolymer and optical components of such a copolymer
06/13/1995US5424171 For laser disk players, high carrier to noise ratio
06/13/1995US5424106 Optical information recording medium and method of designing its structure
06/13/1995US5424102 Optical recording medium and production thereof
06/13/1995US5423671 Apparatus for producing a substrate sheet for an optical recording medium
06/13/1995US5423103 Laser disc buffing apparatus
06/13/1995CA1335866C Method and apparatus for non-intrusive continuous and automatic taking of samples, storing and disposing of samples and data for an eventual evaluation
06/08/1995WO1995015557A1 Rom-ram-disk
06/08/1995WO1995015407A1 Magneto-optical alloy sputter targets
06/08/1995DE4443001A1 Fluorite-type crystal contg. samarium as active ion
06/08/1995DE3790966C2 Optical recording material
06/07/1995EP0656626A2 Information recording-reproduction method
06/07/1995EP0656625A1 Optical disk and method for reproducing information recorded on the same
06/07/1995EP0656624A1 Compatible optical read device
06/07/1995CN1103539A Disk-shaped optical storage medium and process for producing the same
06/07/1995CN1103501A A device for applying a lacquer coating to a disc-shaped registration carrier
06/07/1995CN1103500A Optical disk, and information recording/reproduction apparatus
06/07/1995CN1028812C Directional logic circuit
06/06/1995US5422874 Optical recording disk, and recording/reading apparatus using same
06/06/1995US5422872 Telecentric rotary actuator in an optical recording system
06/06/1995US5422871 Method and apparatus for producing an optical disk having a read-only area and a rewritable area
06/06/1995US5422870 Optical pickup for information recording/reproducing apparatus
06/06/1995US5422868 Audio signal recording apparatus with a track number signal generating function
06/06/1995US5422867 Access control circuit for use in optical disk unit
06/06/1995US5422866 Magneto-optical head with birefringent polarizer
06/06/1995US5422226 Compact disk having cured print layer on protective layer covering recording layer; heat resistance; non-delaminating
06/06/1995US5421768 Abrasive cloth dresser
06/06/1995CA2041987C Optical disk drive
06/06/1995CA2000313C Tracking servo apparatus for disc-shaped optical record medium
06/01/1995DE4340595A1 Milling appts. for compact disc coating removal
05/1995
05/31/1995EP0655740A1 Recording medium management method
05/31/1995EP0655739A2 Information signal recording method
05/31/1995EP0655162A1 Compositions of bacteriorhodopsin variants with increased memory time and their use
05/31/1995CN1103168A Light modulator and optical head adjustment method
05/30/1995US5420849 Apparatus for reproducing data from optical data recording medium
05/30/1995US5420848 Optical system for optical information recording/reproducing apparatus having a galvano mirror
05/30/1995US5420847 Reproducing system for an optical disc
05/30/1995US5420846 Recording medium having a plurality of nonlinear transmission characteristics
05/30/1995US5420845 Methods of varying optical properties, optical devices, information recording media and information recording methods and apparatuses
05/30/1995US5420841 Spindle motor control circuit for optical recording and regenerating system
05/30/1995US5420840 Separation type mono block optical head with tracking control achieved by a moveable mirror
05/30/1995US5420838 Disk recording and reproducing device
05/30/1995US5420837 Recording condition determination method and apparatus upon execution of over-write operation on magnetooptical disk by heat shut off method and pulse train method, and magnetooptical recording method and apparatus
05/30/1995US5420834 Optical disk recorders using disks coatings close to outer surfaces with optical path extending through a thick transparent substrate
05/30/1995US5420832 Half height magnetooptical-disk recording and/or reproducing apparatus for a 5.25 inch large capacity magnetooptical-disk
05/30/1995US5420690 Optical information recording/reproducing apparatus
05/30/1995US5419999 Optical recording medium and recording/reproducing method therefor
05/30/1995US5419939 Optical recording disk
05/30/1995US5419937 Reflection and interference layers
05/26/1995WO1995014299A1 Optical pickup apparatus
05/24/1995EP0654787A1 Signal level adjusting unit
05/24/1995EP0654785A1 Error correcting apparatus with error correcting signal holding function
05/24/1995EP0654784A1 Optical head for generating a plurality of light beams and an opto-magnetic recording/reproducing/erasing apparatus using same
05/24/1995EP0615631A4 Motion picture digital sound system and method with primary sound storage edit capability.
05/24/1995CN1102901A Optical memory material
05/24/1995CN1028574C Method and apparatus for positioning transducers
05/23/1995US5418910 Dual buffer cache system for transferring audio compact disk subchannel information to a computer
05/23/1995US5418852 Unauthorized use prevention method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatus
05/23/1995US5418774 Optical head system and its optical disc
05/23/1995US5418773 Zoned record carrier
05/23/1995US5418772 Electromagnetic objective lens driving apparatus of optical data recording and reproducing apparatus including a one-piece yoke member
05/23/1995US5418770 Method of and apparatus for correcting edge interval of pit in optical recording/read-out apparatus
05/23/1995US5418769 Optical head
05/23/1995US5418768 Disc-shaped recording medium and apparatus for reproducing track addresses recorded on the disc-shaped recording medium
05/23/1995US5418767 Detection of overusage of spare sectors in an optical disk
05/23/1995US5418766 Apparatus for detecting the presence of an optical disk
05/23/1995US5418765 Apparatus for recording and reproducing optical information having an optical waveguide
05/23/1995US5418764 Recording device, a record carrier having preformatted address codes and auxiliary codes providing control data for use by the recording device, and an information recording system including both the recording device and the record carrier
05/23/1995US5418030 Optical recording medium and method for making
05/23/1995US5417899 Injection compression molding method for compact discs or the like
05/23/1995US5417763 Device for applying a lacquer coating to a disc-shaped registration carrier
05/23/1995US5417182 Apparatus for manufacturing a substrate means for an optical recording disk
05/23/1995CA2020059C Modular ceramic igniter
05/23/1995CA2017500C Recording and reproducing device
05/18/1995DE4440006A1 Magneto=optical recording disc
05/17/1995EP0653753A2 Disk reproduction apparatus capable of continuously varying a reproduction speed
05/17/1995EP0653748A1 An optical disk and a method for recording, reproducing, and deleting information on and from the optical disk
05/17/1995EP0653699A1 Apparatus and method for reproducing data from disc, method for recording data on disc, and disc
05/17/1995EP0653092A1 Magneto-optical recording materials system.
05/17/1995EP0617801A4 Digital sound system for motion pictures with analog sound track emulation.
05/16/1995US5416809 Digital phase locked loop apparatus
05/16/1995US5416766 Optical recording medium and playback method thereof
05/16/1995US5416765 Optical head for use in an optical disk apparatus