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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
6459672 Optical head and optical disc device Oct. 1, 2002
6456575 Method for recording information in optical information medium and reproducing information therefrom Sep. 24, 2002
6445671 Optical pickup device having a shielding protection Sep. 3, 2002
6445669 Initialization of phase-change optical recording medium Sep. 3, 2002
6442124 Compatible optical pick-up apparatus for recording and reproducing information from recording media having different formats Aug. 27, 2002
6421307 Optical device Jul. 16, 2002
6421314 Semiconductor laser drive device, optical head, optical disk device and optical disk recording and reproducing method Jul. 16, 2002
6418103 Initializing a phase-changing optical recording medium using a laser including a high speed shutter Jul. 9, 2002
6404721 Optical head and optical disc device Jun. 11, 2002
6392978 Method of forming light emitting portion of light spot forming device and optical element May. 21, 2002
6392979 Optical pickup and optical disk apparatus using the same May. 21, 2002
6381207 Optical pickup movable to control beam shift and field angle in an optical disk drive Apr. 30, 2002
6381209 Multi-channel optical head for optical recording and reading optical storage data Apr. 30, 2002
6376827 Near field optical memory head Apr. 23, 2002
6373809 Multi-channel optical head for optical recording and reading optical storage data Apr. 16, 2002
6373806 Two-color hologram recording/reproducing apparatus Apr. 16, 2002
6366548 Optical pickup having two laser beam sources having wave lengths different from each other and optical device including the optical pickup Apr. 2, 2002
6363037 Optical pickup apparatus with objective lens having a phase shift section Mar. 26, 2002
6350368 Electrochemical and photochemical electrodes and their use Feb. 26, 2002
6341118 Multiple channel scanning device using oversampling and image processing to increase throughput Jan. 22, 2002
6339579 Semiconductor laser diode driving device and driving method Jan. 15, 2002
6320837 Optical pickup and optical device Nov. 20, 2001
6314122 Filament-based, optical detection apparatus Nov. 6, 2001
6278670 Optical head apparatus Aug. 21, 2001
6272101 Method and device for instantly encoding digitized information on a stamper from which compact discs can be made Aug. 7, 2001
6249502 Optical recording head Jun. 19, 2001
6246658 Multiple channel scanning device using optoelectronic switching Jun. 12, 2001
6233217 Optical pickup for recording/reproduction with a light emitting diode light source May. 15, 2001
6188653 Optical storage medium and apparatus and method of reproducing data therefrom using different laser power Feb. 13, 2001
6151291 Device for optically reading digital data from a medium, particularly a laser disk reader device Nov. 21, 2000
6147956 Optical pickup using a plano-convex lens as an objective lens for focusing two light beams Nov. 14, 2000
6130873 Optical pickup and servo control system for digital data storage Oct. 10, 2000
6084847 Light pickup Jul. 4, 2000
6084848 Two-dimensional near field optical memory head Jul. 4, 2000
6075762 Disc drive apparatus Jun. 13, 2000
6072523 System and a method of three-dimensional imaging Jun. 6, 2000
6060221 Method and apparatus for initializing optical recording medium May. 9, 2000
6038204 Optical source module for generating beams with different wavelengths Mar. 14, 2000
6031810 Using two laser sources on a magneto-optical recording medium for preventing light intensity shortage Feb. 29, 2000
6028835 Integrated read/write head for ferroelectric optical storage Feb. 22, 2000
6023450 Multiple beam optical pickup using a vertical cavity surface emitting laser array Feb. 8, 2000
6011769 Optical information recording/reproducing apparatus with high frequency imposing circuit Jan. 4, 2000
5995475 Two dimensional laser diode array using multimode lasers Nov. 30, 1999
5986997 Updatable optical data storage disc having reduced crosstalk between tracks, and drive for same Nov. 16, 1999
5986998 Optical head having two vertical cavity surface emitting lasers with different wavelengths Nov. 16, 1999
5986996 Optical pick-up and optical recording system Nov. 16, 1999
5986994 Light pickup of thin type Nov. 16, 1999
5959960 Method of providing a range of conformalities for optical recording layers Sep. 28, 1999
5956312 Pickup apparatus and method for laser beams having different wavelengths Sep. 21, 1999
5936929 Optical submodule and method for making Aug. 10, 1999

1 2 3 4 5 6 7 8 9 10










 
 
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