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Class Information
Number: 365/124
Name: Static information storage and retrieval > Information masking > Diffraction
Description: Subject matter wherein the radiation beam is diffracted as a function of the information stored.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6331904 |
Reflection optics reference beam telescope |
Dec. 18, 2001 |
| 6226109 |
Diffractive security device on compact discs |
May. 1, 2001 |
| 6166835 |
Holographic memory |
Dec. 26, 2000 |
| 6111776 |
Compact optical random access memory having multiple reflections |
Aug. 29, 2000 |
| 6104511 |
Reflector-based off-axis optical system for holographic storage |
Aug. 15, 2000 |
| 6018402 |
Apparatus and method for phase-encoding off-axis spatial light modulators within holographic data systems |
Jan. 25, 2000 |
| 5828595 |
Optical recording and playback apparatus and method using single light absorbents |
Oct. 27, 1998 |
| 5800950 |
Recording medium |
Sep. 1, 1998 |
| 5793504 |
Hybrid angular/spatial holographic multiplexer |
Aug. 11, 1998 |
| 5550779 |
Holographic memory with angle, spatial and out-of-plane multiplexing |
Aug. 27, 1996 |
| 5511035 |
Optical random access memory having diffractive simplex imaging lens |
Apr. 23, 1996 |
| 5465238 |
Optical random access memory having multiple state data spots for extended storage capacity |
Nov. 7, 1995 |
| 5460907 |
Photorefractive materials |
Oct. 24, 1995 |
| 5436867 |
Holographic random access memory |
Jul. 25, 1995 |
| 5325342 |
Surface-enhanced raman optical data storage system |
Jun. 28, 1994 |
| 5311474 |
Random access optical storage |
May. 10, 1994 |
| 5223355 |
Process for improving the signal-to-noise ratio in holography using bacteriorhodopsin-based recording media |
Jun. 29, 1993 |
| 5184322 |
Optical storage device with a stationary mass storage medium |
Feb. 2, 1993 |
| 5184323 |
Photorefractive device and process for its use |
Feb. 2, 1993 |
| 5088087 |
Dual-metal reflective layer recordable/erasable optical media |
Feb. 11, 1992 |
| 5086411 |
Optical location systems |
Feb. 4, 1992 |
| 5008858 |
Asynchronous semiconductor memory having address transition detector |
Apr. 16, 1991 |
| 5003600 |
Diffraction gratings used as identifying markers |
Mar. 26, 1991 |
| 4999810 |
Surface-enhanced raman optical data storage system |
Mar. 12, 1991 |
| 4999809 |
Photorefractive device and process for its use |
Mar. 12, 1991 |
| 4953124 |
Opto-magnetic signal reproducing apparatus for reading, by differential detection using a magneto-optical effect, information magnetically recorded on a record medium |
Aug. 28, 1990 |
| 4796226 |
Reading head in integrated optics for reading information recorded on a magnetic support |
Jan. 3, 1989 |
| 4703469 |
Optical data recording using radiation of different characteristics |
Oct. 27, 1987 |
| 4527173 |
Erasable, reusable optical recording element and method |
Jul. 2, 1985 |
| 4497860 |
Imageable prismatic array |
Feb. 5, 1985 |
| 4434477 |
Mechanically addressed optical memory |
Feb. 28, 1984 |
| 4432071 |
Apparatus for fast access to a series of stored images |
Feb. 14, 1984 |
| 4371954 |
Reversible memory structure with thermo-optical writing and optical reading and process for writing and erasing said structure |
Feb. 1, 1983 |
| 4264986 |
Information-recording process & apparatus |
Apr. 28, 1981 |
| 4219848 |
Optical record playback apparatus employing light frequency at which alternate regions of record track exhibit anti-reflection condition |
Aug. 26, 1980 |
| 4204638 |
Process of coding a card with a diffraction grating having lines with irregular spacing |
May. 27, 1980 |
| 4161752 |
High density video disk having two pit depths |
Jul. 17, 1979 |
| 4160269 |
Apparatus for optically reading a phase-modulated optical record carrier |
Jul. 3, 1979 |
| 4125860 |
Reproducer for an eraseable videodisc |
Nov. 14, 1978 |
| 4118735 |
Synchronous detection tracking of video disc |
Oct. 3, 1978 |
| 4084185 |
Record carrier on which information is stored in an optically readable structure |
Apr. 11, 1978 |
| 4011435 |
Optical indicia marking and detection system |
Mar. 8, 1977 |
| 3996570 |
Optical mass memory |
Dec. 7, 1976 |
| 3988055 |
Light optic data handling system |
Oct. 26, 1976 |
| 3985428 |
Light optic data handling system |
Oct. 12, 1976 |
| 3985426 |
Light beam deflection resolution amplifier means |
Oct. 12, 1976 |
| 3971002 |
Device for the optical read-out of a diffractive track belonging to a data carrier in the form of a disc or tape |
Jul. 20, 1976 |
| 3949160 |
Electro-optic readout of thermoplastic deformation patterns |
Apr. 6, 1976 |
| 3935566 |
Multiple-channel information translation system and method |
Jan. 27, 1976 |
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