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Class Information
Number: 369/44.38
Name: Dynamic information storage or retrieval > With servo positioning of transducer assembly over track combined with information signal processing > Optical servo system > Plural incident beams > Recording
Description: Subject matter wherein one of the beams is for writing/recording operations.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7403465 |
Method and apparatus for writing on an optical disk with beam spots aligned at an angle to data tracks |
Jul. 22, 2008 |
| 7283440 |
Tracking error signal detecting method selectively using a push-pull method, an improved push-pull method, and a three beam method and optical recording/reproducing apparatus using the same |
Oct. 16, 2007 |
| 7151724 |
Disk recording apparatus and disk recording method |
Dec. 19, 2006 |
| 7088646 |
Track search control circuit and optical disc drive |
Aug. 8, 2006 |
| 7035177 |
Method and apparatus for aberration correction |
Apr. 25, 2006 |
| 6999657 |
High density optical data storage |
Feb. 14, 2006 |
| 6985414 |
Method and apparatus for writing on an optical disk with beam spots aligned at an angle to data tracks |
Jan. 10, 2006 |
| 6980497 |
Optical disk recording apparatus and control method thereof |
Dec. 27, 2005 |
| 6980495 |
Optical recording apparatus with interleaving blank rounds into spiral track |
Dec. 27, 2005 |
| 6894955 |
Quick access information read and write devices |
May. 17, 2005 |
| 6891675 |
Optical device |
May. 10, 2005 |
| 6882605 |
FOCUSING METHOD, METHOD OF DETECTING FOCAL POINT DEVIATION, METHOD OF FORMING MASTER OF DATA STORAGE MEDIUM, FOCUSING CONTROL UNIT, UNIT FOR DETECTING FOCAL POINT DEVIATION, AND UNIT FOR FORMI |
Apr. 19, 2005 |
| 6819639 |
Method and apparatus for multi-channel auto-focus |
Nov. 16, 2004 |
| 6813235 |
Optical pickup apparatus an optical axis correcting element |
Nov. 2, 2004 |
| 6809996 |
Optical head, optical recording/reproducing apparatus and laser module |
Oct. 26, 2004 |
| 6766414 |
Methods, apparatus and system for caching data |
Jul. 20, 2004 |
| 6738325 |
Optical disk unit capable of reducing tracking offset |
May. 18, 2004 |
| 6714493 |
Optical disk apparatus |
Mar. 30, 2004 |
| 6704096 |
Exposure apparatus and exposure method |
Mar. 9, 2004 |
| 6577376 |
Optical device with variable numerical apertures |
Jun. 10, 2003 |
| 6496454 |
Optical information recording/reproducing apparatus |
Dec. 17, 2002 |
| 6385147 |
Recording and simultaneously reading information recorded on a moveable optical recording medium by adjusting the relative position of first and second beam paths |
May. 7, 2002 |
| 6313453 |
Glassmastering photoresist read after write method and system |
Nov. 6, 2001 |
| 6207942 |
Optical pickup device, error detection device, and detection method therefore |
Mar. 27, 2001 |
| 6151154 |
Optical pickup, aberration correction unit and astigmatism measurement method |
Nov. 21, 2000 |
| 6118740 |
System for creating, reading and writing on rotatable information storage media, a method for writing closely spaced information tracks |
Sep. 12, 2000 |
| 6108282 |
System for creating, reading and writing on rotatable information storage media, an apparatus for multilayer laser source positioning |
Aug. 22, 2000 |
| 6097677 |
System for creating, reading and writing on rotatable information storage media, a method for combined writing and reading operations |
Aug. 1, 2000 |
| 6088310 |
Pickup for an optical system including a blazed hologram for dividing a laser |
Jul. 11, 2000 |
| 6088306 |
System for creating, reading and writing on rotatable information storage media, an apparatus for combined writing and reading operations |
Jul. 11, 2000 |
| 6081489 |
System for creating, reading and writing on rotatable information storage media, an apparatus for performing both read and write operations |
Jun. 27, 2000 |
| 6081487 |
System for creating, reading and writing on rotatable information storage media, an apparatus for controlling laser positioning |
Jun. 27, 2000 |
| 6049512 |
In a system for creating, reading and writing on rotatable information storage media, an apparatus for two-sided writing |
Apr. 11, 2000 |
| 6034929 |
System for creating, reading and writing on rotatable information storage media, a method for multi-layer laser source positioning |
Mar. 7, 2000 |
| 5970034 |
Multiple-beam optical recording apparatus |
Oct. 19, 1999 |
| 5901125 |
Recording and reproducing optical disk device with multi-disk type capability |
May. 4, 1999 |
| 5835469 |
High-density information recording/reproducing method |
Nov. 10, 1998 |
| 5822287 |
Optical recording method, optical recording apparatus and optical recording medium |
Oct. 13, 1998 |
| 5808991 |
Optical information recording and reproducing apparatus and method which enable recording and verifying at the same time |
Sep. 15, 1998 |
| 5751673 |
Quick response optical disk system providing accurate displacement of a pick-up and method therefor |
May. 12, 1998 |
| 5745449 |
Optical information recording/reproducing method and apparatus for determining a relative tracking offset amount of light spots on a recording medium to perform tracking control |
Apr. 28, 1998 |
| 5740138 |
Apparatus for recording information on a primary optical disk to manufacture optical disks |
Apr. 14, 1998 |
| 5717676 |
Apparatus for recording on master optical disc |
Feb. 10, 1998 |
| 5701279 |
Optical information recording-reproducing apparatus including a light beam detector being divided by a division line extending in a direction perpendicular to an information track |
Dec. 23, 1997 |
| 5701280 |
Optical information recording and/or reproducing apparatus in which a reproducing light beam is modulated with at least a 100% degree of modulation |
Dec. 23, 1997 |
| 5684781 |
Optical pickup for recording/reproducing double-sided disc |
Nov. 4, 1997 |
| 5648945 |
Optical information recording/reproducing apparatus |
Jul. 15, 1997 |
| 5633845 |
Optical information recording and reproducing apparatus having reproducing light beams radiated onto regions situated behind and in front of a spot formed by a recording light beam |
May. 27, 1997 |
| 5627813 |
Optical information recording and/or reproducing apparatus and method with auto power control function for two light sources |
May. 6, 1997 |
| 5598387 |
High-density optical data storage unit and method for writing and reading information |
Jan. 28, 1997 |
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