Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › 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
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)
12/1991
12/03/1991US5070493 Wedge prism assembly for optical information storage
12/03/1991US5070492 Signal decoding apparatus and method
12/03/1991US5070491 Error signal generating circuit
12/03/1991US5070490 Optical recording medium with tracking tracks extending beyond the recording layer and a method for detecting tracking signal from said medium
12/03/1991US5070489 Driving circuit for double solenoid focus actuator
12/03/1991US5070488 Optical integrated circuit and optical apparatus
12/03/1991US5069155 Apparatus for in-line lacquering of compact disks
11/1991
11/28/1991WO1991018414A1 Single wafer processor apparatus
11/28/1991WO1991018393A1 Tracking circuit
11/28/1991WO1991018392A1 Process for shortening the switching on time of an optical recording and/or playback machine
11/28/1991WO1991018345A1 Voice message decoding and buffering system
11/28/1991WO1991017967A1 Dynamic semiconductor wafer processing using homogeneous chemical vapors
11/28/1991WO1991017897A1 Semiconductor processor apparatus with dynamic wafer vapor treatment and particle volatilization
11/28/1991DE4115321A1 Information recording layer
11/28/1991DE4016553A1 Reducing access time to selected CD track - reading identification data to achieve synchronisation with stored data
11/28/1991DE4016552A1 Verfahren zur verkuerzung der einschaltzeit eines optischen aufzeichnungs- und/oder wiedergabegeraetes A method for shortening of the switching of an optical recording and / or reproducing apparatus
11/28/1991DE4016550A1 Optical disc scanning system - regulates laser power according to output of photodetector receiving light reflected from disc representing data, tracking or focus error
11/27/1991EP0458656A2 Optical information processing apparatus having a "neuro network" for inducing an error signal
11/27/1991EP0458604A2 Method and apparatus for recording and reproducing information in cells using multiple interference
11/27/1991EP0458565A2 Servo controlled positioning system
11/27/1991EP0458477A2 Stabilisation of flexible optical media
11/27/1991EP0458372A2 Apparatus for reproducing signals from both sides of discs
11/27/1991EP0458319A2 Servo system for optical recording reproducing drive
11/27/1991EP0458257A2 Optical recording medium
11/27/1991EP0458027A1 Servo-system for a disk player
11/27/1991EP0256110A4 Apparatus and method for increasing storage capacity of recording media
11/27/1991EP0145787B1 Apparatus for controlling tracking of recorded disc reproduction device
11/26/1991WO1991018950A1 Dye composition and optical recording medium
11/26/1991US5068858 Error correction capability varied with track location on a magnetic or optical disk
11/26/1991US5068846 Reflective optical record carrier
11/26/1991US5068845 Optical pickup device for reading information on an optical disk
11/26/1991US5068844 Objective lens mount utilizing leaf springs
11/26/1991US5068843 Optical read-write apparatus
11/26/1991US5068751 Three element grating objective and grating-beam shaper, and optical scanning device
11/26/1991US5067812 Systems for inspecting defects in an optical recording medium
11/26/1991CA2063579A1 Dye-incorporated composition and optical recording medium
11/26/1991CA1292571C Optical recording medium and method and apparatus for correcting angular deviation thereof
11/26/1991CA1292570C Optoelectronic signal recording medium and method of making same
11/26/1991CA1292569C Data record formatting system and reading/writing system for optical recording medium
11/21/1991EP0457721A1 NIR-absorbant dyes
11/21/1991EP0457573A1 Optical head
11/21/1991EP0457567A2 Tracking error signal generator
11/21/1991EP0457536A1 Optical recording medium and optical recording apparatus
11/21/1991EP0457459A2 Minimising focus error in optical information storage systems
11/21/1991EP0457369A2 Recording method and recording apparatus
11/21/1991EP0457194A2 Positioner seek control system of a disk apparatus
11/21/1991EP0456767A1 Erasable optical information storage system
11/21/1991EP0456661A1 Actuator assembly for optical disk systems
11/21/1991DE4114234A1 Optical recording and storage disc system - uses information from designated data control tracks to determine type of light recording medium and data format used
11/19/1991US5067122 Method of determining the monitor sensitivity of, and method and system for controlling a radiation emitting arrangement, and optical recording and/or reproducing apparatus including such a system
11/19/1991US5067120 Disk drive apparatus
11/19/1991US5067118 Position detecting device for use by switching plural alternating signals having different phases from each other
11/19/1991US5067117 Output stabilizing apparatus for an optical head
11/19/1991US5066138 Optical head apparatus
11/19/1991CA1292312C Multiple card recording system
11/18/1991WO1991018057A1 Metal chelate compound and optical recording medium prepared therefrom
11/18/1991CA2063611A1 Metal chelate compound and optical recording medium using it
11/13/1991EP0456454A2 Optical disk drive
11/13/1991EP0456014A2 Optical recording/reproducing apparatus
11/13/1991CN1014751B Process for producing information recording discs
11/13/1991CN1014750B Optical disc medium
11/12/1991US5065390 Optical playback head
11/12/1991US5065388 Method and apparatus for recording on a record carrier a table of contents identifying all the recorded data signals
11/12/1991US5065386 Servo system responsive to noise and having variable characteristic filter means
11/12/1991US5065383 Tracking servo system adapted to operate with variable track pitch
11/12/1991US5065381 Optical pick-up aparatus
11/12/1991US5065380 Diffraction grating for an optical pickup device
11/12/1991US5065253 Disk player with disk tilt or pickup position responsive noise reduction
11/12/1991US5064702 Quinoxalinepentamethine dyes and optical recording medium containing same
11/12/1991US5064258 Information reading device
11/12/1991CA1292067C Optical record carrier and apparatus for reading the record carrier
11/12/1991CA1292066C Method of photothermal information recording, reading and erasing
11/12/1991CA1292065C "compact disc" drive apparatus specifically designed for storage of digital data and/or a mixture of audio information and digital data
11/10/1991CA2040625A1 Optical recording/reproducing apparatus
11/06/1991EP0455539A1 System for optical recording of data on disks and corresponding methods of reading and writing
11/06/1991EP0455365A2 Movable lens support structure having required resonant frequency characteristics
11/06/1991EP0455249A2 Automatic focusing apparatus and method
11/06/1991EP0455205A1 Two-side video disc having high definition television video signals recorded thereon and a method of manufacturing the same
11/06/1991EP0455124A2 Optical recording medium and process for producing it
11/06/1991EP0454854A1 Optical pickup apparatus comprising a focus adjusting apparatus
11/06/1991EP0454740A1 Optical scanning device.
11/06/1991EP0287648B1 Ray scanning system
11/06/1991CN1014658B Device for determining opiical disk record electric lever
11/05/1991US5063556 Optical information recording medium providing reflected light at two different wavelengths, recording apparatus utilizing the same
11/05/1991US5063555 Rotary optical head
11/05/1991US5063552 Optical disk apparatus with data transfer rate and rotational speed variable by annular zones
11/05/1991US5063549 Optical disk apparatus
11/05/1991US5063548 Information processing apparatus
11/05/1991US5063547 Apparatus for automatically reproducing a user-defined preferred selection from a record carrier
11/05/1991US5063546 Optic disc with servo pattern and apparatus for accessing the optical disc
11/05/1991US5063545 Access speed detecting means for disc player
11/05/1991US5063097 Optical recording medium
11/05/1991US5063096 Norbornene polymer substrates; containing metallic oxide or fluoride
11/05/1991CA1291815C Offset for protection against amorphous pips during write verify
10/1991
10/31/1991WO1991016709A1 Digital audio recording format for motion picture film
10/31/1991WO1991016707A1 Method and apparatus for correcting focus in an optical recording system
10/31/1991DE4113409A1 Optical head for disc system - has optical converter which changes plane of optical transmission
10/30/1991EP0454235A1 Optical recording medium and method of writing, reading and erasing information
10/30/1991EP0454161A1 A sucked substrate detecting apparatus
10/30/1991EP0454038A2 Method of controlling a recording laser beam
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