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Browse by Category: Main > Information Technology
Class Information
Number: 369/44.34
Name: Dynamic information storage or retrieval > With servo positioning of transducer assembly over track combined with information signal processing > Optical servo system > Sampling servo system
Description: Subject matter wherein an instantaneous value of a variable is obtained at regular intervals (e.g., sample and hold, be it analog or digital storage, etc.).










Patents under this class:
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Patent Number Title Of Patent Date Issued
8634284 Optical storage system having differential phase detector Jan. 21, 2014
8599663 High speed forward sense sampling in optical drives using placed data patterns Dec. 3, 2013
8520133 Imaging apparatus and method Aug. 27, 2013
8466644 Motor driving circuit Jun. 18, 2013
8462602 Data recovery device and method Jun. 11, 2013
8427914 Lens pull-in method for near-field optical accessing system Apr. 23, 2013
8363517 Optical storage system having differential phase detector Jan. 29, 2013
8351311 Semiconductor integrated circuit and optical disk device having the same Jan. 8, 2013
8320230 Processing circuits and methods for optical data Nov. 27, 2012
8203918 Mirror signal generation circuit Jun. 19, 2012
8189433 Optical disk drive device and additional recording method May. 29, 2012
8174949 Systems and methods for format efficient timing recovery in a read channel May. 8, 2012
8125862 System and method for controlling tracking in an optical drive Feb. 28, 2012
8116178 Servo accelerator system for optical drives Feb. 14, 2012
8107329 Optical storage system having differential phase detector Jan. 31, 2012
8093845 Controller and MCU chip for controlling 3-phase brushless DC motor Jan. 10, 2012
8081543 Optical disc apparatus and focus control method Dec. 20, 2011
8068404 Signal value holding apparatus, signal value holding method, signal value control system, signal value control method, playback apparatus, and playback method Nov. 29, 2011
8054723 Method and apparatus for controlling record and reproduction of optical record medium Nov. 8, 2011
8054725 Optical disk apparatus Nov. 8, 2011
8014724 System and method for signal limiting Sep. 6, 2011
8000186 Acting track-crossing during tracking error adjust Aug. 16, 2011
7995449 System of sampling interface for an optical pick-up head Aug. 9, 2011
7995430 Optical disk device and control method for the same Aug. 9, 2011
7974160 Plant gain calibration for an optical storage servo system Jul. 5, 2011
7969831 Method of controlling servo in optical disc device and servo control device using the same Jun. 28, 2011
7957234 Optical pickup apparatus Jun. 7, 2011
7924664 Optical disk apparatus, optical head, and detection signal processing method thereof Apr. 12, 2011
7911909 Jitter counter and optical disc apparatus using same Mar. 22, 2011
7885151 Servo accelerator system for optical drives Feb. 8, 2011
7869324 Method for identifying type of optical disk Jan. 11, 2011
7870463 Optical disc recording and playback apparatus Jan. 11, 2011
7859954 Optical disk apparatus with approximate focus control of laser beam Dec. 28, 2010
7848189 Optical disk apparatus controlling focus and tracking drive in gap and recorded area when adjusting write power Dec. 7, 2010
7843775 Optical disc apparatus and focusing method for the same Nov. 30, 2010
7839732 System and method for calibrating recording track offset of optical storage device Nov. 23, 2010
7839735 Phase difference detection apparatus, phase difference detection method, reproduction apparatus and tracking controlling method Nov. 23, 2010
7821885 TE signal polarity determining system and related method thereof Oct. 26, 2010
7804746 Land/groove track and pickup head movement direction detection Sep. 28, 2010
7796480 Apparatus and methods for light spot servo signal detection Sep. 14, 2010
7796481 Information recording apparatus, information recording method and information recording program Sep. 14, 2010
7782724 Information reproducing apparatus and method for measuring surface deflection Aug. 24, 2010
7778128 Focusing controller apparatus and method for an optical disk drive Aug. 17, 2010
7773470 Pickup control device, optical disk apparatus and pickup control method for the same Aug. 10, 2010
7768881 Medium, apparatus, and method of recording optical-information Aug. 3, 2010
7760591 Optical disc reproducing apparatus Jul. 20, 2010
7746735 Laser focus controlling method on an optical disk and an optical disk apparatus with using thereof Jun. 29, 2010
7706219 Signal processing apparatus and method for an optical disc drive Apr. 27, 2010
7668053 Processing an information carrying signal Feb. 23, 2010
7660211 Servo control apparatus, servo control method, optical disc apparatus and video camera recorder Feb. 9, 2010

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