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Class Information
Number: 360/66
Name: Dynamic magnetic information storage or retrieval > General recording or reproducing > Specifics of biasing or erasing
Description: Subject matter including specific circuitry or techniques for correcting the inherent nonlinear amplitude characteristics of magnetic recording or for erasing existing recordings.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8693127 Writing timing-based servo patterns in perpendicular and non-oriented magnetic media Apr. 8, 2014
8681441 Systems and methods for generating predictable degradation bias Mar. 25, 2014
8670204 Head-disk interference (HDI) detection Mar. 11, 2014
8670203 Method for manufacturing magnetic tape with servo signal written therein, magnetic tape with servo signal written therein, and servo writer Mar. 11, 2014
8654472 Implementing enhanced fragmented stream handling in a shingled disk drive Feb. 18, 2014
8643974 Dynamic reduction of tape stain accumulation on tape head assembly across multiple environments Feb. 4, 2014
8638518 Bias techniques for magnetic tape media Jan. 28, 2014
8625228 Method and system for compensating for track squeeze Jan. 7, 2014
8587890 Tape drive provided write format for overwrite erasure of magnetic tape data recorded in tracks Nov. 19, 2013
8559121 System, method and apparatus for shingled magnetic recording in disk drives Oct. 15, 2013
8537487 Magnetic storage device with chirped write head degaussing waveform Sep. 17, 2013
8520333 Magnetic structure for erasing disk or disks within hard disk drives Aug. 27, 2013
8503127 Method and circuitry for programmably controlling degauss write current decay in hard disk drives Aug. 6, 2013
8477443 Pulse writing for bit patterned and continuous media recording Jul. 2, 2013
8477441 Write data switching for magnetic disk drives Jul. 2, 2013
8462456 Magnetic data eraser Jun. 11, 2013
8379363 Bulk erase tool to erase a perpendicular media recording disk of a disk drive Feb. 19, 2013
8373886 Image processing device Feb. 12, 2013
8369045 Secure data storage Feb. 5, 2013
8339724 Induction of magnetic bias in a magnetic recording disk Dec. 25, 2012
8310902 Signal-extraction laser-pulse system architecture for thermally-assisted magnetic recording Nov. 13, 2012
8305704 Write data switching for magnetic disk drives Nov. 6, 2012
8300347 Magnetic data eraser Oct. 30, 2012
8300350 Magnetic disk drive using offset in positioning head to read data and head positioning method Oct. 30, 2012
8289642 Digital techniques to decode signals extracted from computer-readable storage media Oct. 16, 2012
8289644 Varying data reader response Oct. 16, 2012
8279549 System and method for setting bias for MR head Oct. 2, 2012
8213115 Secure data storage Jul. 3, 2012
8154816 Magneto resistive voltage biasing scheme with fast recovery and maximum dynamic range Apr. 10, 2012
8125723 Predictive characterization of adjacent track erasure in recording media Feb. 28, 2012
8120866 Method for characterizing a magnetic-recording system for the presence of adjacent-track interference and far-track interference Feb. 21, 2012
8107181 Apparatus, system, and method for measuring magnetoresistive head resistance Jan. 31, 2012
8094401 Writing high frequency pattern over a DC background to detect skip track erasure for a disk drive Jan. 10, 2012
8089714 Deterioration detection method of composite magnetic head and magnetic disk inspection apparatus Jan. 3, 2012
8068305 Secure data disposal for disk drive Nov. 29, 2011
8059353 Magnetic storage systems and methods allowing for recovery of data blocks written off-track with non-constant offsets Nov. 15, 2011
8049984 Integrated slider bias control Nov. 1, 2011
8027109 Reuse of partially expired physical tape volume Sep. 27, 2011
8014096 Combined bulk thermal-assister and bulk eraser Sep. 6, 2011
7990648 Disk drive margining read channel using predictable disturbance samples generated as a function of a written pattern Aug. 2, 2011
7990642 Systems and methods for storage channel testing Aug. 2, 2011
7986485 Servo writer providing a pre-writing, longitudinal magnetic bias in a magnetically unoriented tape supply Jul. 26, 2011
7982990 Digital techniques to decode signals extracted from computer-readable storage media Jul. 19, 2011
7969675 Determination of the quality of an erase process for perpendicular magnetic recording disks Jun. 28, 2011
7961418 Resistivity sense bias circuits and methods of operating the same Jun. 14, 2011
7955723 Magnetic recording medium substrate and perpendicular magnetic recording medium Jun. 7, 2011
7944640 Bulk eraser including at least three magnets configured for erasing recorded information May. 17, 2011
7929240 Systems and methods for adaptive MRA compensation Apr. 19, 2011
7929241 Signal conversion system and method Apr. 19, 2011
7898761 Magneto resistive biasing scheme with fast recovery and maximum dynamic range Mar. 1, 2011

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