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Browse by Category: Main > Information Technology
Class Information
Number: 360/62
Name: Dynamic magnetic information storage or retrieval > General recording or reproducing > Signal switching > Record-reproduce
Description: Subject matter wherein the switching accomplishes a change between recording and reproducing modes of operation.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8711499 Methods for measuring media performance associated with adjacent track interference Apr. 29, 2014
8634154 Disk drive writing a sync mark seam in a bootstrap spiral track Jan. 21, 2014
8587889 Disk storage apparatus, disk control apparatus and write control method Nov. 19, 2013
8582226 Write delay stabilization Nov. 12, 2013
8553347 Information recording device and information recording method Oct. 8, 2013
8462453 Magnetic transfer method and magnetic transfer device Jun. 11, 2013
8369038 Method and system for distinguishing spatial and thermal defects on perpendicular media Feb. 5, 2013
8331053 Systems and methods for adjacent track interference (ATI) risk management Dec. 11, 2012
8320067 Refresh operations using write/read commands Nov. 27, 2012
8264788 Discrete track media (DTM) design and fabrication for heat assisted magnetic recording (HAMR) Sep. 11, 2012
8179627 Floating guard band for shingle magnetic recording May. 15, 2012
8159766 Data processing system having data reproduction independent of data processing Apr. 17, 2012
8154823 Information recording and reproducing apparatus, information recording and reproducing system, information processing apparatus and information reproducing apparatus Apr. 10, 2012
8144418 Test device for magnetic storage device, magnetic storage device, and method of manufacturing magnetic storage device Mar. 27, 2012
8094401 Writing high frequency pattern over a DC background to detect skip track erasure for a disk drive Jan. 10, 2012
8094400 Asymmetry correction in read signal Jan. 10, 2012
8032076 Cellular telephone and multimedia accessory audio system adaptor and methods therefor Oct. 4, 2011
7986481 Magnetic reproducing method for suppressing low temperature noise Jul. 26, 2011
7974037 Techniques for providing DC-free detection of DC equalization target Jul. 5, 2011
7974029 Disk drive biasing refresh zone counters based on write commands Jul. 5, 2011
7957093 Recording head with current controlled gamma ratio Jun. 7, 2011
7929235 Method and system for distinguishing spatial and thermal defects on perpendicular media Apr. 19, 2011
7889452 Hard disk drive preamplifier timers and methods to calibrate hard disk drive preamplifier timers Feb. 15, 2011
7885031 Asymmetry correction in read signal Feb. 8, 2011
7885032 Apparatus and method for bulk erasure of disk drives Feb. 8, 2011
7880997 Magnetic recording apparatus and magnetic recording medium Feb. 1, 2011
7881001 Method and system for canceling feedback current in an amplifier system Feb. 1, 2011
7869692 Imaging apparatus Jan. 11, 2011
7864474 Disk drive and control method thereof Jan. 4, 2011
7817367 Apparatus, signal-processing circuit and device for magnetic recording system Oct. 19, 2010
7817366 Gain adjustment before zero phase start Oct. 19, 2010
7813073 Recording data simultaneously at two depths of a tilted magnetic medium Oct. 12, 2010
7813074 Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method Oct. 12, 2010
7813071 Thermally assisted recording system Oct. 12, 2010
7773331 Thermally assisted magnetic recording system Aug. 10, 2010
7773330 Apparatus for excitation, enhancement, and confinement of surface electromagnetic waves for confined optical power delivery Aug. 10, 2010
7724458 Hard disk drive with selectable reading and writing to/from different platter surfaces May. 25, 2010
7663826 Method and apparatus for copying data from one disc drive to another disc drive Feb. 16, 2010
7643237 Data loss prevention method of a media storage device and media storage device Jan. 5, 2010
7630158 Data loss prevention method of a media storage device and media storage device Dec. 8, 2009
7595951 Head-specific standby modes for disk drive preamplifiers and the like Sep. 29, 2009
7551379 Write element before read element with early servo termination on write Jun. 23, 2009
7532422 Method and system for distinguishing spatial and thermal defects on perpendicular media May. 12, 2009
7380134 Information recording/reproducing apparatus and method of executing encryption processing May. 27, 2008
7372653 Degauss waveform generator for perpendicular recording write head May. 13, 2008
7245448 Information recording apparatus and data writing control device therefor Jul. 17, 2007
7177105 Disk synchronous write Feb. 13, 2007
7106534 Method for compensating timing to start data recording and magnetic disk device using same Sep. 12, 2006
7106536 Write head demagnetizer Sep. 12, 2006
7092187 Magnetic recording and reproducing apparatus and method and thin film magnetic head used therein Aug. 15, 2006

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