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Class Information
Number: 369/44.36
Name: Dynamic information storage or retrieval > With servo positioning of transducer assembly over track combined with information signal processing > Optical servo system > Servo loop gain/switching control > Variable gain
Description: Subject matter wherein the servo gain is variable in a continuous manner as opposed to being switched between values, but may be combined with switching operations.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8559282 Average servo control method and system, and target level determination method applied in thereof Oct. 15, 2013
8531935 Plant gain calibration for an optical storage servo system Sep. 10, 2013
8514676 Method and device for sensitivity compensation Aug. 20, 2013
8451698 Optical disk reproducing device and optical disk recording and reproducing device May. 28, 2013
8441899 Method and apparatus for compensating periodic signal May. 14, 2013
8264923 Optical disc device Sep. 11, 2012
8238206 Optical disk device Aug. 7, 2012
8174941 Optical disc apparatus, crosstalk correction method and integrated circuit May. 8, 2012
8102739 Optical disk playback apparatus and optical disk recording/playback apparatus Jan. 24, 2012
8036095 Signal processing device for optical disks and optical disk apparatus Oct. 11, 2011
8027229 Focus control device, and optical disc device Sep. 27, 2011
8023373 Disc drive and photo-detector circuits Sep. 20, 2011
8000186 Acting track-crossing during tracking error adjust Aug. 16, 2011
7995432 Optical disk reproduction apparatus and optical disk reproduction method Aug. 9, 2011
7974161 Method of adjusting gain balance of optical transducer Jul. 5, 2011
RE42235 Compensation method and device for tracking operation of optical storage system Mar. 22, 2011
7903514 Information reproduction device Mar. 8, 2011
7894312 Automatic gain control circuit and signal reproducing device Feb. 22, 2011
7869312 Calibration based DC coupled analog front end for optical storage system Jan. 11, 2011
7864639 Optical disk apparatus Jan. 4, 2011
7864638 Optical disk apparatus Jan. 4, 2011
7796476 Optical disk device and optical disk gain adjusting method Sep. 14, 2010
7668053 Processing an information carrying signal Feb. 23, 2010
7545709 Optical disk apparatus having servo parameter setting unit Jun. 9, 2009
7468935 Optimized tracking method Dec. 23, 2008
7421359 Detecting back electromotive force voltage Sep. 2, 2008
7391684 Optical disk recording/reproducing apparatus Jun. 24, 2008
7385887 Address signal position detection apparatus, optical disk playback apparatus, and address signal position detection method Jun. 10, 2008
7313060 Optical disk system with non-linearly controlled amplifier Dec. 25, 2007
7307926 Apparatus and method for tracking control Dec. 11, 2007
7304919 Optical information reproducing apparatus having a servo control circuit Dec. 4, 2007
7295498 Disk apparatus and method of generating a tracking error signal Nov. 13, 2007
7277378 Offset adjusting circuit for optical disc and offset adjusting method Oct. 2, 2007
7263040 Read/write position controller for optical pickup Aug. 28, 2007
7248545 Optical pickup device Jul. 24, 2007
7224648 Optical recording and reproduction apparatus including stable and inexpensive servo control mechanism May. 29, 2007
7170847 Means for limiting an output signal of an amplifier stage Jan. 30, 2007
7151723 Optical disc device Dec. 19, 2006
7113460 Optical disk having pits of different depths formed therein, optical disk reproducing apparatus for reproducing the optical disk, and method of tracking the optical disk Sep. 26, 2006
7085204 Method and apparatus for controlling record and reproduction of optical record medium involving averaging servo error signals Aug. 1, 2006
7079461 Eccentricity compensation apparatus based on frequency response characteristics of an actuator of a disk drive servo system Jul. 18, 2006
7075864 Pre-pit signal generator compensating a pre-pit signal damped, semiconductor integrated circuit, recording and playback apparatus, and pre-pit signal generation method Jul. 11, 2006
7068571 Optical recording apparatus and control method thereof Jun. 27, 2006
7054250 Method and device for jitter enhancement in an optical disc system May. 30, 2006
7046594 Apparatus and method for optical storage system focus control May. 16, 2006
7031235 Method for adjusting a speed-detection device for an object lens in an optical pickup head Apr. 18, 2006
RE39013 Method and apparatus for optical recording and reproducing with tracking servo reducing track offset Mar. 14, 2006
6992953 Tracking servo apparatus of optical information recording and reproducing apparatus Jan. 31, 2006
6992956 Disk reproducing apparatus for precisely determining a value of an address signal reproduced from the disk Jan. 31, 2006
6985543 Digital servo channel for recording apparatus Jan. 10, 2006

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