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Class Information
Number: 369/44.32
Name: Dynamic information storage or retrieval > With servo positioning of transducer assembly over track combined with information signal processing > Optical servo system > Means to compensate for defect or abnormal condition
Description: Subject matter wherein the servo system structure or operation has means to avoid the servo system being affected by, or so that it is responsive to and corrects for an adverse situation.

Sub-classes under this class:

Class Number Class Name Patents
369/44.33 Recording (e.g., inhibit recording upon defect, etc.) 63

Patents under this class:

Patent Number Title Of Patent Date Issued
8711665 Method and apparatus for determining storage capacity error for a data storage device Apr. 29, 2014
8675461 Adjusting a defect threshold Mar. 18, 2014
8675459 Optical disk apparatus Mar. 18, 2014
8659983 Blu-ray optical pick-up devices and methods Feb. 25, 2014
8654619 Method and apparatus for operating a disk drive Feb. 18, 2014
8638646 Optical information processing method and optical information processing apparatus Jan. 28, 2014
8634285 Timing loop with large pull-in range Jan. 21, 2014
8619520 Lens driving unit for optical pickup and optical disc drive including the lens driving unit Dec. 31, 2013
8611194 Recording and reproducing apparatus and method Dec. 17, 2013
8599664 Method and apparatus for determining unbalanced disc and optical information storage medium system using the same Dec. 3, 2013
8565060 Optical pickup device and method for manufacturing the same Oct. 22, 2013
8565052 Methods, systems, and computer program products for correcting repeatable runout Oct. 22, 2013
8553510 Method and system for radial and tangential tilt calibration of optical storage systems Oct. 8, 2013
8537648 Position control method of optical pickup head of optical disc drive and system thereof Sep. 17, 2013
8537485 Compensation for vibration in a data storage system Sep. 17, 2013
8531927 Optical disc apparatus, tilt correction method, and program Sep. 10, 2013
8531926 Optical system for optical pickup Sep. 10, 2013
8531925 Optical disc device and laser beam power controlling method for optical disc device Sep. 10, 2013
8514682 Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same Aug. 20, 2013
8503273 Optical disc device and recording method Aug. 6, 2013
8493824 Optical head and optical disc device Jul. 23, 2013
8488429 Electron beam exposure system and electron beam exposure method Jul. 16, 2013
8477586 Method for driving optical pickup apparatus Jul. 2, 2013
8456971 Optical disk driving apparatus, optical disk driving system, vehicle equipped with optical disk driving system, method of correcting spherical aberration in optical disk driving apparatus, pro Jun. 4, 2013
8451699 Optical information reproduction device, optical information recording device, optical information reproduction method, and optical information recording method May. 28, 2013
8446808 Use of feedback error and/or feed-forward signals to adjust control axes to optimal recovery position of hologram in holographic data storage system or device May. 21, 2013
8441901 Optical disc apparatus May. 14, 2013
8441899 Method and apparatus for compensating periodic signal May. 14, 2013
8432783 Optical pickup device and position adjusting method for light separating element Apr. 30, 2013
8432775 Motor driving circuit Apr. 30, 2013
8427914 Lens pull-in method for near-field optical accessing system Apr. 23, 2013
8422349 Method and device to improve start-up performance of a multi-layer optical disc Apr. 16, 2013
8411549 Circuit for preventing destruction of semiconductor laser element, and optical disc device provided with the circuit Apr. 2, 2013
8411544 Optical disc reproduction apparatus Apr. 2, 2013
8411537 Systems and methods for recovering information from a defective medium Apr. 2, 2013
8406101 Optical disk drive and method for driving a feeding device of an optical disk drive Mar. 26, 2013
8400901 Optical pickup device Mar. 19, 2013
RE44043 Method for determining DC level of AC signal and DC offset of the same Mar. 5, 2013
8391112 Optical disk apparatus, control method, and program Mar. 5, 2013
8391111 Optical pickup control circuit and optical disc drive device Mar. 5, 2013
8363518 Disk drive Jan. 29, 2013
8351310 Method and apparatus for determining an optimal focus bias and spherical aberration compensating value in an optical disc drive Jan. 8, 2013
8345524 Information readout apparatus Jan. 1, 2013
8345520 Method of vertical deviation disc detection Jan. 1, 2013
8341657 Lens driving mechanism for optical pickup and optical disc apparatus Dec. 25, 2012
8325581 Optical head and optical disc device Dec. 4, 2012
8289828 Optical data recording/reproduction apparatus Oct. 16, 2012
8284646 Objective lens driving device, control circuit, optical disc device and objective lens driving method Oct. 9, 2012
8284643 Recording apparatus and control method Oct. 9, 2012
8284641 Optical disc apparatus Oct. 9, 2012

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