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Class Information
Number: 369/44.35
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
Description: Subject matter wherein the servo system varies the servo gain or switches in/out or between servo loops.










Sub-classes under this class:

Class Number Class Name Patents
369/44.36 Variable gain 212


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8675463 Optical disc driving device Mar. 18, 2014
8559282 Average servo control method and system, and target level determination method applied in thereof Oct. 15, 2013
8559283 Detector for high frequency amplitude modulation distortion Oct. 15, 2013
8537650 Optical read/write apparatus Sep. 17, 2013
8514676 Method and device for sensitivity compensation Aug. 20, 2013
8462597 Decoupling technique for optical disk drive optical pickup units Jun. 11, 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
8416651 Servo control using digital signal processing for optical disk drive Apr. 9, 2013
8411543 Recording apparatus and control method Apr. 2, 2013
8369190 Proximity sensing system Feb. 5, 2013
8363532 Method and apparatus for controlling position in which data is to be recorded Jan. 29, 2013
8339918 Optical reading method and optical reading system Dec. 25, 2012
8284644 Optical disc apparatus switching focus point between layers Oct. 9, 2012
8264928 Method and system for fluid mediated disk activation and deactivation Sep. 11, 2012
8259542 Plant gain calibration for an optical storage servo system Sep. 4, 2012
8179754 Optical disc apparatus, method, and information storage medium for reading information recorded on an optical disc medium May. 15, 2012
8174941 Optical disc apparatus, crosstalk correction method and integrated circuit May. 8, 2012
8154972 Systems and methods for hard disk drive data storage including reduced latency loop recovery Apr. 10, 2012
8130601 Optical disk device Mar. 6, 2012
8116178 Servo accelerator system for optical drives Feb. 14, 2012
8111596 Phase error detection apparatus Feb. 7, 2012
8102739 Optical disk playback apparatus and optical disk recording/playback apparatus Jan. 24, 2012
8085631 Tracking control device, tracking control method, and optical disc apparatus Dec. 27, 2011
8081543 Optical disc apparatus and focus control method Dec. 20, 2011
8064300 Optical disk apparatus, signal processing semiconductor integrated circuit constituting the same, and operation method Nov. 22, 2011
8054719 Comparator and optical-disc recording/reproduction apparatus Nov. 8, 2011
8050153 Method for adaptively driving a tracking element with mechanical deviation and device using the same Nov. 1, 2011
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
8027230 Apparatus having switchable servo gains and offsets for optical disk drive and method thereof Sep. 27, 2011
8023373 Disc drive and photo-detector circuits Sep. 20, 2011
7995430 Optical disk device and control method for the same Aug. 9, 2011
7995431 Optical disc device Aug. 9, 2011
7974161 Method of adjusting gain balance of optical transducer Jul. 5, 2011
7965590 Optical disc apparatus and offset adjustment method thereof Jun. 21, 2011
7957251 Systems and methods for reduced latency loop recovery Jun. 7, 2011
7948839 Optical disk apparatus May. 24, 2011
7936654 Optical disk device May. 3, 2011
RE42235 Compensation method and device for tracking operation of optical storage system Mar. 22, 2011
7907483 Recording medium having a substrate containing microscopic pattern of parallel groove and land sections and recording/reproducing equipment therefor Mar. 15, 2011
7903509 Recording medium having a substrate containing microscopic pattern of parallel groove and land sections and recording/reproducing equipment therefor Mar. 8, 2011
7885151 Servo accelerator system for optical drives Feb. 8, 2011
7876649 Optical disc recording and reproducing apparatus Jan. 25, 2011
7869312 Calibration based DC coupled analog front end for optical storage system Jan. 11, 2011
7864638 Optical disk apparatus Jan. 4, 2011
7852716 Optical disk drawing apparatus, optical disk drawing system and optical disk drawing method Dec. 14, 2010
7852718 Compensation value setting device and compensation value setting method Dec. 14, 2010
7848190 Optical disc apparatus switching focus point between layers Dec. 7, 2010
7839732 System and method for calibrating recording track offset of optical storage device Nov. 23, 2010

1 2 3 4 5 6 7 8 9 10 11










 
 
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