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Class Information
Number: 360/40
Name: Dynamic magnetic information storage or retrieval > General processing of a digital signal > In specific code or form
Description: Subject matter including generating a waveform from digital data or reproducing such a waveform, the frequency, shape, polarity or other characteristic thereof being indicative of the digital data.

Sub-classes under this class:

Class Number Class Name Patents
360/44 Intra-cell transition 71
360/43 Multi-frequency 79
360/41 Nonreturn to zero 101
360/42 Phase code 54

Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8645790 Data processing device and method using error detection code, method of compensating for data skew, and semiconductor device having the data processing device Feb. 4, 2014
8643970 Magnetic recording apparatus and recording method of magnetic recording apparatus Feb. 4, 2014
8625223 Multi-directional self servo-writing for a disk drive Jan. 7, 2014
8625220 Constrained on-the-fly interleaver address generator circuits, systems, and methods Jan. 7, 2014
8582223 Methods and devices for two-dimensional iterative multi-track based map detection Nov. 12, 2013
8537481 Shingled magnetic recording disk drive with minimization of the effect of far track erasure on adjacent data bands Sep. 17, 2013
8446683 Systems and methods for data pre-coding calibration May. 21, 2013
8390947 High-rate transition control code for magnetic recording channels Mar. 5, 2013
8379340 Circuit and method for detecting the phase of a servo signal Feb. 19, 2013
8358479 Method and apparatus to limit DC-level in coded data Jan. 22, 2013
8345365 Data processing system having data reproduction independent of data processing Jan. 1, 2013
8259405 Rewriting codeword objects to magnetic data tape upon detection of an error Sep. 4, 2012
8208785 Video recording system, video camera, video recording apparatus, method of controlling video recording apparatus by video camera, and method of recording video signal in video recording Jun. 26, 2012
8130458 BPM recording with more than one dot per bit Mar. 6, 2012
8098447 Method and apparatus to limit DC-level in coded data Jan. 17, 2012
8040626 High-rate transition control code for magnetic recording channels Oct. 18, 2011
7978427 Device for embedding information into data Jul. 12, 2011
7965462 Storing partial data sets to magnetic tape Jun. 21, 2011
7957370 Synchronous read channel Jun. 7, 2011
7885255 Synchronous read channel Feb. 8, 2011
7876516 Rewrite-efficient ECC/interleaving for multi-track recording on magnetic tape Jan. 25, 2011
7813066 Magnetic recording and reproduction method, recording apparatus, reproduction apparatus and magnetic recording medium Oct. 12, 2010
7808735 Magnetic disc controller and method Oct. 5, 2010
7760454 Sequence-permutation control information detection and signal polarity determination Jul. 20, 2010
7751138 Correcting errors in disk drive read back signals by iterating with the Reed-Solomon decoder Jul. 6, 2010
7746589 Bit patterned medium, reading head for reading data recorded on bit patterned medium, and hard disk drive for recording/reading data on/from bit patterned medium Jun. 29, 2010
7738204 Disk drive with multi-protocol channel to controller interface and method Jun. 15, 2010
7729073 Magnetic recording disk and disk drive with amplitude-type servo fields having patterned servo islands for read/write head positioning Jun. 1, 2010
7715135 Methods, circuits, apparatus, and systems for read channel synchronization and/or fly height measurement May. 11, 2010
7715137 Servo patterns for patterned media May. 11, 2010
7710673 Phase locking apparatus, phase locking method, data reproducing apparatus, data reproducing method, and programs May. 4, 2010
7702218 Image recording apparatus and semiconductor device Apr. 20, 2010
7688535 Extracting position information using user data Mar. 30, 2010
7679850 Position determination using circular shift codes Mar. 16, 2010
7663830 Method of forming servo data of HDD and self servo write method using the same Feb. 16, 2010
7643238 Dibit extraction Jan. 5, 2010
7616134 Systems and methods for enumerative encoding and decoding of maximum-transition-run codes and PRML (G,I,M) codes Nov. 10, 2009
7612959 Method for correcting added and lost bits in a hard disk drive using error correction codes Nov. 3, 2009
7583458 Channel optimization metrics Sep. 1, 2009
7457066 Method and apparatus for phase-shift null-burst-pattern Nov. 25, 2008
7433141 Data randomization for rewriting in recording/reproduction apparatus Oct. 7, 2008
7379452 Synchronous read channel May. 27, 2008
7372652 Correcting errors in disk drive read back signals by iterating with the Reed-Solomon decoder May. 13, 2008
7359132 Equalization preamble region in digital data storage (DDS) format Apr. 15, 2008
7286065 Method and apparatus for DC-level constrained coding Oct. 23, 2007
7253979 Method and device for data read/write, recording medium, and program product Aug. 7, 2007
7199955 Decoding apparatus and decoding method Apr. 3, 2007
7095340 Run-length violation detection circuitry and methods for using the same Aug. 22, 2006
7071851 Techniques for implementing non-uniform constraints in modulation encoded data Jul. 4, 2006
7064687 Techniques for modulating data using short block encoders Jun. 20, 2006

1 2 3 4 5 6 7 8 9 10

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