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Class Information
Number: 369/44.28
Name: Dynamic information storage or retrieval > With servo positioning of transducer assembly over track combined with information signal processing > Optical servo system > Initialization/start-up or changing modes of system > While track jumping or crossing
Description: Subject matter wherein the servo system is operative during a track jumping or track changing operation or as plural tracks are crossed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8675459 Optical disk apparatus Mar. 18, 2014
8634283 Disk drive performing in-drive spiral track writing Jan. 21, 2014
8634284 Optical storage system having differential phase detector Jan. 21, 2014
8588048 Optical information recording medium, optical information recording and reproducing device, and recording method Nov. 19, 2013
8582403 Optical disc apparatus and method of making layer-to-layer jump in multilayer optical disc Nov. 12, 2013
8576678 System and method for tracking position of a laser beam on a storage device Nov. 5, 2013
8537648 Position control method of optical pickup head of optical disc drive and system thereof Sep. 17, 2013
8508161 Drive apparatus Aug. 13, 2013
8509042 Optical disc apparatus, focus control method and integrated circuit Aug. 13, 2013
8451697 Disk drive centering demodulation windows on spiral tracks during a seek operation May. 28, 2013
8437231 Servo control device and optical disc device May. 7, 2013
8432774 Tracking servo and method for tracking optical disc and optical disc device using the tracking servo Apr. 30, 2013
8427923 Optical pickup device, optical disc device and focus adjusting method Apr. 23, 2013
8406100 Optical disc device and tracking servo control circuit therefor Mar. 26, 2013
8363532 Method and apparatus for controlling position in which data is to be recorded Jan. 29, 2013
8363518 Disk drive Jan. 29, 2013
8363517 Optical storage system having differential phase detector Jan. 29, 2013
8339915 Focus optimization routine with sub-optimal jump settings in optical disc systems Dec. 25, 2012
8335138 Track counting system and method for recordable optical media Dec. 18, 2012
8305851 Optical disk apparatus Nov. 6, 2012
8289825 Optical disk drives and method for controlling track-seeking for optical disk drives Oct. 16, 2012
8284641 Optical disc apparatus Oct. 9, 2012
8254218 Recording method and apparatus for optical disk drive Aug. 28, 2012
8243565 Optical disk apparatus with an improved track jump performance Aug. 14, 2012
8223602 Optical disc drive Jul. 17, 2012
8208353 Disk apparatus Jun. 26, 2012
8189441 Method of recognizing track pitch of optical disk May. 29, 2012
8179757 Method and apparatus for recording and reproducing information on and from optical disc May. 15, 2012
8179753 Positioning control unit and optical disk drive May. 15, 2012
8174941 Optical disc apparatus, crosstalk correction method and integrated circuit May. 8, 2012
8144552 TE signal polarity determining system and related method thereof Mar. 27, 2012
8139449 Method and apparatus for eliminating errors in a seek operation on a recording medium Mar. 20, 2012
8130605 Driving device and method, program, and recording medium Mar. 6, 2012
8125860 Optical disk playback device Feb. 28, 2012
8125861 Optical disk device Feb. 28, 2012
8121000 Optical disk apparatus Feb. 21, 2012
8107335 Method and apparatus for recording and reproducing information on and from optical disc Jan. 31, 2012
8107329 Optical storage system having differential phase detector Jan. 31, 2012
8098554 Tilt detecting device and method Jan. 17, 2012
8094532 Interlayer movement apparatus, and integrated circuit for interlayer movement apparatus Jan. 10, 2012
8089834 Apparatus for controlling servo signal gains of an optical disc drive and method of the same Jan. 3, 2012
RE43018 Optical disk apparatus and tracking method Dec. 13, 2011
8077574 Drive device and method for controlling the same Dec. 13, 2011
8072852 Optical disc device Dec. 6, 2011
8072851 Position control apparatus and optical apparatus Dec. 6, 2011
8059502 Data storage system and method for operating a servo system Nov. 15, 2011
8059499 Drive signal generating apparatus and drawing apparatus Nov. 15, 2011
8059517 Apparatus and method for generating radio frequency ripple zero crossing signal Nov. 15, 2011
8054715 Track counting system and method for recordable optical media Nov. 8, 2011
8045424 Reading method and device for optical disk drives Oct. 25, 2011

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