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Browse by Category: Main > Information Technology
Class Information
Number: 369/121
Name: Dynamic information storage or retrieval > Specific detail of information handling portion of system > Radiation beam modification of or by storage medium > With particular light source (e.g., laser, crt with phosphor)
Description: Subject matter including either structural detail of a light source, or a light source characterized by a function or relationship additional to conventional light emission.










Sub-classes under this class:

Class Number Class Name Patents
369/123 Glow lamps 5
369/122 Solid state 229


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
5289313 Optical head using semiconductor laser array as light source Feb. 22, 1994
5283778 Pickup device Feb. 1, 1994
5278812 Tracking and focussing functions in optical disk apparatus Jan. 11, 1994
5270995 Method for recording and reproducing information by varying a work function of a recording medium and device for the same Dec. 14, 1993
5260928 Apparatus and method for fabricating a lens/mirror tower Nov. 9, 1993
5258973 Method of pre-processing over-write capable magnetooptical recording medium, and pre-processed over-write capable magnetooptical recording medium Nov. 2, 1993
5255257 Frequency, phase and amplitude control apparatus and method for acousto-optic deflector optimization Oct. 19, 1993
5253198 Three-dimensional optical memory Oct. 12, 1993
5233596 Optical recording/reproducing apparatus including both automatic power control and temperature-based drive current control Aug. 3, 1993
5231626 Wavelength selective optical recording and reproducing method Jul. 27, 1993
5216648 Objective lens drive apparatus applicable to optical disk apparatus Jun. 1, 1993
5195152 Multichannel optical recording apparatus employing laser diodes Mar. 16, 1993
5172368 Reader for optical recording medium Dec. 15, 1992
5153868 Magneto-optic recording and regenerating device Oct. 6, 1992
5151893 Optical data recording and reproducing apparatus Sep. 29, 1992
5148416 Signal processing circuit for magnetooptical record/reproducing apparatus Sep. 15, 1992
5144616 Laser diode and multibeam optical head using the laser diode Sep. 1, 1992
5138603 System and method for processing optical information with tracking error compensated Aug. 11, 1992
5136572 Optical data storage using temperature stabilizer lasers Aug. 4, 1992
5136573 Information recording apparatus and method Aug. 4, 1992
5134607 Optical memory system for generating a timing control signal for detecting a recorded region through a playback signal Jul. 28, 1992
5132959 Optical head in use with an optical recording/reproducing apparatus Jul. 21, 1992
5128919 Apparatus for reproducing an optically recorded information Jul. 7, 1992
5121377 Error detection method and apparatus for reducing the number of errors generated when reading digital data stored on a recording medium such as film Jun. 9, 1992
5119361 Optical information readout apparatus Jun. 2, 1992
5113385 Optical disk cutting apparatus May. 12, 1992
5113387 Three laser optical disk drive system May. 12, 1992
5093822 High-density magnetic recording and optical reproducing apparatus Mar. 3, 1992
5084857 Information recording method using a modulated recording beam at high, intermediate and low power levels Jan. 28, 1992
5060222 Method of overwriting information on recording medium Oct. 22, 1991
5050154 Optical recording/reproducing module having reduced size Sep. 17, 1991
5040163 Laser beam control circuit for optical recording/reproducing apparatus Aug. 13, 1991
5034942 System having a function of reproducing optical information Jul. 23, 1991
5033043 Optical head apparatus for optical disks Jul. 16, 1991
5029023 Laser-amplified motion detector and method Jul. 2, 1991
5014253 Optical pick-up for selective playback and recording on a magneto-optically recorded medium May. 7, 1991
5007039 Optical information recording/reproducing apparatus Apr. 9, 1991
4998231 Magneto-optical disk recording apparatus Mar. 5, 1991
4984229 Autofocus system Jan. 8, 1991
4949329 Method of effecting erasure of optical information media including varying duty cycle, laser power and focus offset Aug. 14, 1990
4943861 Apparatus and method for exposing photosensitive recording media with digital image data Jul. 24, 1990
4939716 Optical information carrier Jul. 3, 1990
4935915 Beam controller for magneto-optical disc memory system Jun. 19, 1990
4916683 Optical recording/reproducing apparatus with means to shift light beam periodically to prevent record medium deterioration Apr. 10, 1990
4891790 Optical system with an optically addressable plane of optically bistable material elements Jan. 2, 1990
4882594 Method for making a smooth, uniform image of a laser diode array Nov. 21, 1989
4868807 Wavelength selective optical data storage system Sep. 19, 1989
4864555 Optical information carrier, method for erasing information therein, and optical storage device realizing this method Sep. 5, 1989
4860276 Micro optical head with an optically switched laser diode Aug. 22, 1989
4847184 Method for producing a laser-printed picture Jul. 11, 1989

1 2 3 4 5 6 7 8 9 10










 
 
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