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Class Information
Number: 369/53.14
Name: Dynamic information storage or retrieval > Condition indicating, monitoring, or testing > Including radiation storage or retrieval > Having abnormal condition indicating > Due to unwanted operational condition of record carrier > Eccentricity or warp
Description: Subject matter wherein the underiable operational condition of the record medium is due to an off-centered recording track or an undesired flatness recording surface.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7548499 |
Offset amount measuring method and apparatus |
Jun. 16, 2009 |
| 7539091 |
Differential push-pull gain controlling method and apparatus to reduce the effects of rotational eccentricity |
May. 26, 2009 |
| 7518960 |
Method and apparatus for positioning beam spot on recording medium |
Apr. 14, 2009 |
| 7515514 |
Approximating topology of optically writable medium surface |
Apr. 7, 2009 |
| 7505386 |
Radial runout detection method and device for an optical disk drive |
Mar. 17, 2009 |
| 7492678 |
Apparatus and method for stabilizing operation of disc driver in section for setting mode conversion |
Feb. 17, 2009 |
| 7483347 |
Optical disk apparatus |
Jan. 27, 2009 |
| 7450483 |
Information carrier apparatus and information carrier eccentricity correction method |
Nov. 11, 2008 |
| 7450479 |
Disk recording apparatus for recording data by using zone CLV technology |
Nov. 11, 2008 |
| 7440371 |
Unbalanced disc detection and reading speed control in disc reading apparatus |
Oct. 21, 2008 |
| 7440373 |
Optical disk drive detecting disk surface deviation |
Oct. 21, 2008 |
| 7420896 |
Information recording apparatus |
Sep. 2, 2008 |
| 7362672 |
Method and apparatus for disc rotation control in an optical storage system based on detected extent of disc warping |
Apr. 22, 2008 |
| 7352669 |
Method and device for disc rotation control in an optical storage system based on detected extent of disc warping |
Apr. 1, 2008 |
| 7333410 |
Method and apparatus for canceling repeatable run-out errors in positioning on recording medium |
Feb. 19, 2008 |
| 7317669 |
Method and apparatus for compensating for disc eccentricity in optical disc servo system |
Jan. 8, 2008 |
| 7283452 |
Objective lens having two aspheric surfaces and a phase shifter and optical device including the same |
Oct. 16, 2007 |
| 7277366 |
Optical head and optical recording and reproducing apparatus |
Oct. 2, 2007 |
| 7257062 |
Method for detecting eccentricity of an optical disc, and optical disc drive that performs the method |
Aug. 14, 2007 |
| 7242643 |
Optical disk apparatus |
Jul. 10, 2007 |
| 7239582 |
Interpolation of optical disc vertical displacement information |
Jul. 3, 2007 |
| 7239587 |
Approximating topology of optical disc surface |
Jul. 3, 2007 |
| 7230896 |
Optical disk reproducing device and optical disk reproducing method |
Jun. 12, 2007 |
| 7215608 |
Optical disk reproducing apparatus for compensating for tracking error by using real-time repetitive control and method of driving optical disk reproducing apparatus |
May. 8, 2007 |
| 7196980 |
Information disk recording/reproducing device and method for controlling recording/reproducing speed thereof |
Mar. 27, 2007 |
| 7145304 |
Rotating storage media control loops having adaptive feed forward insertion of signals including harmonics |
Dec. 5, 2006 |
| 7133336 |
Optical disc reproducing apparatus with function of detecting direction of rotation of disc based on mirror information |
Nov. 7, 2006 |
| 7120101 |
Head follow-up control method, head follow-up control device and storage device thereof |
Oct. 10, 2006 |
| 7099252 |
Method and apparatus for removing vibration in disc drive |
Aug. 29, 2006 |
| 7088647 |
Apparatus of controlling tracking for a disk |
Aug. 8, 2006 |
| 7079461 |
Eccentricity compensation apparatus based on frequency response characteristics of an actuator of a disk drive servo system |
Jul. 18, 2006 |
| 7046602 |
Process for computing eccentric amount of disk upon rotating |
May. 16, 2006 |
| 7031242 |
Method of controlling rotation of optical recording medium at two or more rotational speeds, and storage apparatus employing same method |
Apr. 18, 2006 |
| 7012863 |
Rotation control circuit, semiconductor integrated circuit, optical disk drive and method for controlling the same |
Mar. 14, 2006 |
| 6996043 |
Optical head apparatus |
Feb. 7, 2006 |
| 6985413 |
Compensation method and device for tracking operation of optical storage system |
Jan. 10, 2006 |
| 6977477 |
Systems, apparatus, and methods for motor control |
Dec. 20, 2005 |
| 6965548 |
Method of unbalanced disc detection |
Nov. 15, 2005 |
| 6958964 |
Apparatus for reproducing data from an optical disc inducing vibration and method thereof |
Oct. 25, 2005 |
| 6952383 |
Optical disc device with a wobble control circuit |
Oct. 4, 2005 |
| 6937550 |
Information recording medium, information reproduction apparatus, and information reproduction method |
Aug. 30, 2005 |
| 6934232 |
Method for detecting an unbalanced disk in an optical disk reading device |
Aug. 23, 2005 |
| 6934231 |
Information recording medium, information reproduction apparatus, and information recording apparatus |
Aug. 23, 2005 |
| 6904010 |
Method of writing servo tracks for disk file apparatus using write start or stop sectors |
Jun. 7, 2005 |
| 6829205 |
Optical pickup, tilt detection apparatus, tilt detection method and optical disk apparatus |
Dec. 7, 2004 |
| 6829203 |
Optical disk apparatus and optical disk processing method |
Dec. 7, 2004 |
| 6826135 |
Method of compensating for an eccentricity of an optical disk and apparatus for doing the same |
Nov. 30, 2004 |
| 6785208 |
Reproducer for disc-shape storage medium |
Aug. 31, 2004 |
| 6785205 |
Apparatus for controlling eccentricity in photo-record player and control method thereof |
Aug. 31, 2004 |
| 6768705 |
Optical disk drive including a positioner and means for compensating for an eccentricity of an optical disk |
Jul. 27, 2004 |
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