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Class Information
Number: 369/44.32
Name: Dynamic information storage or retrieval > With servo positioning of transducer assembly over track combined with information signal processing > Optical servo system > Means to compensate for defect or abnormal condition
Description: Subject matter wherein the servo system structure or operation has means to avoid the servo system being affected by, or so that it is responsive to and corrects for an adverse situation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7433284 |
Method for controlling tilt servo in optical disc device |
Oct. 7, 2008 |
| 7428199 |
Optical disk stabilizing apparatus and method of controlling optical disk stabilizing apparatus |
Sep. 23, 2008 |
| 7426159 |
Method of reproducing optical disk and optical disk reproducing apparatus |
Sep. 16, 2008 |
| 7426163 |
Method and apparatus for preventing malfunction of disc drive |
Sep. 16, 2008 |
| 7423833 |
Servo loop employing correction vector from a secondary disturbance sensor to minimize correlation between servo loop error and disturbance sensor output |
Sep. 9, 2008 |
| 7420896 |
Information recording apparatus |
Sep. 2, 2008 |
| 7420897 |
Optical head, an optical disk device and an integrated circuit |
Sep. 2, 2008 |
| 7421359 |
Detecting back electromotive force voltage |
Sep. 2, 2008 |
| 7417939 |
Optical pickup including aberration correction lens assembly |
Aug. 26, 2008 |
| 7417937 |
Optical pickup apparatus |
Aug. 26, 2008 |
| 7414929 |
Optical disc tilt detection and tilt servo control method |
Aug. 19, 2008 |
| 7411882 |
Optical head device and optical information recording/reproducing device |
Aug. 12, 2008 |
| 7408849 |
Tilt adjustment device for an optical disk drive |
Aug. 5, 2008 |
| 7406007 |
Optical disc apparatus and spherical aberration correction controlling apparatus |
Jul. 29, 2008 |
| 7403454 |
Optical apparatus and aberration correcting element for correcting aberration by independent control of phase distribution and defocus pattern variables |
Jul. 22, 2008 |
| 7397737 |
Output adjustment method for lens position sensor of optical disk device and optical disk device thereof |
Jul. 8, 2008 |
| 7394733 |
Optical head with spherical aberration correction and method of using same |
Jul. 1, 2008 |
| 7395462 |
Defect estimation apparatus and related method |
Jul. 1, 2008 |
| 7391683 |
Apparatus and method for detecting tilt of disc |
Jun. 24, 2008 |
| 7388822 |
Liquid crystal lens element and optical head device |
Jun. 17, 2008 |
| 7385905 |
Apparatus for reading from and/or writing to optical recording media |
Jun. 10, 2008 |
| 7382696 |
Optical pick-up device |
Jun. 3, 2008 |
| 7382698 |
Optical information recording/reproducing apparatus having tilt correction mechanism and method therefor |
Jun. 3, 2008 |
| 7376054 |
Disc reproduction device |
May. 20, 2008 |
| 7372795 |
Recording apparatus and method for generating an index file for a content file |
May. 13, 2008 |
| 7369465 |
Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit |
May. 6, 2008 |
| 7366069 |
Auto-adjusting system for an optical incident angle |
Apr. 29, 2008 |
| 7362672 |
Method and apparatus for disc rotation control in an optical storage system based on detected extent of disc warping |
Apr. 22, 2008 |
| 7362668 |
Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit |
Apr. 22, 2008 |
| 7359294 |
Optical scanning device with tilt detection |
Apr. 15, 2008 |
| 7355932 |
Optical disk device for detecting thickness errors of the transparent substrate |
Apr. 8, 2008 |
| 7352664 |
Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method |
Apr. 1, 2008 |
| 7349311 |
Method and apparatus for detecting radial tilt |
Mar. 25, 2008 |
| 7345967 |
Optical pickup unit |
Mar. 18, 2008 |
| 7342853 |
Optical disc system and method for managing shock during data record/play |
Mar. 11, 2008 |
| 7342854 |
Apparatus for generating tracking error signals |
Mar. 11, 2008 |
| 7342849 |
Recording and/or playback device |
Mar. 11, 2008 |
| 7339860 |
Displacement measurement |
Mar. 4, 2008 |
| 7336570 |
Apparatus and method for adjusting the tilt angle of an optical pickup device |
Feb. 26, 2008 |
| 7336571 |
Method and arrangement for compensating scanning disturbances on optical recording media |
Feb. 26, 2008 |
| 7327656 |
Tilt correction method detecting tilt with same linear velocity as upon actually recording/reproducing at each radial position |
Feb. 5, 2008 |
| 7327644 |
Optical pickup and disc drive apparatus |
Feb. 5, 2008 |
| 7327643 |
Radial tilt compensating optical disk apparatus using tracking control loop gain |
Feb. 5, 2008 |
| 7324413 |
Optical disc device |
Jan. 29, 2008 |
| 7324414 |
Apparatus and method of optical disk recording while detecting vibration |
Jan. 29, 2008 |
| 7319646 |
Focus operation for an optical disk device |
Jan. 15, 2008 |
| 7319643 |
Method for detecting servo error, apparatus therefor, disk which maintains quality of servo error signal, method of controlling servo of disk recording/reproducing apparatus, method of detecti |
Jan. 15, 2008 |
| 7319648 |
Apparatus and method for reproducing record for optical recording medium |
Jan. 15, 2008 |
| 7317671 |
Apparatus and method for compensating for tilt |
Jan. 8, 2008 |
| 7317672 |
Optical head |
Jan. 8, 2008 |
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