ClassID:

199003

G11B2020/185 - CPC Classification

Classification description:

Signal processing not specific to the method of recording or reproducing; Circuits therefor; Digital recording or reproducing; Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information using an low density parity check [LDPC] code

Recent Application in this class:
#1
20240321313
2024-09-26

Magnetic disk device

#2
20240296869
2024-09-05

Magnetic disk device

#3
20240265948
2024-08-08

Modulation code and ECC rate optimization using symbol context mutual information

#4
20240265943
2024-08-08

Data Storage Device Configuration Using Mutual Information

#5
20240249749
2024-07-25

ML ASSISTED DYNAMIC DECODING GEAR SELECTION

#6
20230068268
2023-03-02

Magnetic reproducing and processing device, magnetic recording and reproducing device, and magnetic reproducing method

#7
20220084554
2022-03-17

MAGNETIC DISK DEVICE AND ERROR CORRECTION METHOD

#8
20220076701
2022-03-10

Magnetic disk device and read processing method

#9
20220044702
2022-02-10

Magnetic disk device and error correction method

#10
20210390459
2021-12-16

Machine learning-based read channel data detection

#11
20200266837
2020-08-20

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 3/15 and 4096-symbol mapping, and bit interleaving method using same

#12
20200259509
2020-08-13

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 2/15 and 1024-symbol mapping, and bit interleaving method using same

#13
20190385094
2019-12-19

Machine learning-based read channel data detection

#14
20190356334
2019-11-21

Data storage device employing memory efficient processing of un-converged codewords

#15
20190229754
2019-07-25

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 2/15 and 1024-symbol mapping, and bit interleaving method using same

#16
20190222233
2019-07-18

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 3/15 and 4096-symbol mapping, and bit interleaving method using same

#17
20180358988
2018-12-13

Parameterized iterative message passing decoder

#18
20180277158
2018-09-27

Storage device and controller

#19
20170149445
2017-05-25

Irregular low density parity check processing system with non-uniform scaling

#20
20170039098
2017-02-09

Device quality metrics using unsatisfied parity checks

#21
20160241267
2016-08-18

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 3/15 and 4096-symbol mapping, and bit interleaving method using same

#22
20160241264
2016-08-18

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 2/15 and 1024-symbol mapping, and bit interleaving method using same

#23
20160077941
2016-03-17

Identifying a defect in a data-storage medium

#24
20160055882
2016-02-25

Cycle-slip resilient iterative data storage read channel architecture

#25
20160055872
2016-02-25

Methods for storing and accessing address information in a servo layer of a storage medium

#26
20160020783
2016-01-21

Low Density Parity Check Decoder With Relative Indexing

#27
20150279421
2015-10-01

Adaptive calibration of noise predictive finite impulse response filter based on decoder convergence

#28
20150229331
2015-08-13

Systems and methods for area efficient data encoding

#29
20150161002
2015-06-11

Decoding method, memory storage device and memory controlling circuit unit

#30
20150154065
2015-06-04

Adaptive read error recovery for memory devices

#31
20150149860
2015-05-28

Iterative data storage read channel architecture

#32
20150128006
2015-05-07

Device quality metrics using unsatisfied parity checks

#33
20150109698
2015-04-23

Iterative data storage read channel architecture having dropout mitigation

#34
20150100855
2015-04-09

Normalization factor adaptation for LDPC decoding for hard disk drive systems

#35
20150092290
2015-04-02

Non-binary layered low density parity check decoder

#36
20140347762
2014-11-27

Combined soft detection/soft decoding in tape drive storage channels

#37
20140327981
2014-11-06

Margining decoding utilizing soft-inputs

#38
20140300985
2014-10-09

Method of processing address information for a data storage device, and storage medium, modulator, demodulator, and data storage device

#39
20140285916
2014-09-25

Read channel throughput management

#40
20140229806
2014-08-14

Systems and methods for distributed low density parity check decoding

#41
20140226232
2014-08-14

Adaptive soft-output detector for magnetic tape read channels

#42
20140226231
2014-08-14

Adaptive soft-output detector for magnetic tape read channels

#43
20140195877
2014-07-10

LDPC decoding with on the fly error recovery

#44
20140189458
2014-07-03

Soft input, soft output mappers and demappers for block codes

#45
20140185421
2014-07-03

Optical information reproducing apparatus and optical information reproducing method

#46
20140173385
2014-06-19

Low density parity check decoder with dynamic scaling

#47
20140168811
2014-06-19

Irregular low density parity check decoder with low syndrome error handling

#48
20140126657
2014-05-08

Decoding system and decoding method

#49
20140111882
2014-04-24

Constrained on-the-fly interleaver address generator circuits, systems, and methods

#50
20140082461
2014-03-20

Systems and methods for detector side trapping set mitigation

#51
20140078608
2014-03-20

Systems and methods for hard decision based ITI cancellation

#52
20140068395
2014-03-06

Systems and methods for selectable positive feedback data processing

#53
20140068367
2014-03-06

LDPC decoder trapping set identification

#54
20140053037
2014-02-20

Multi-level LDPC layered decoder with out-of-order processing

#55
20140002920
2014-01-02

Systems and Methods for Identifying Head Contact

#56
20130335846
2013-12-19

Adaptive soft-output detector for magnetic tape read channels

#57
20130335845
2013-12-19

Adaptive soft-output detector for magnetic tape read channels

#58
20130326311
2013-12-05

Magnetic tape recording in data format using an efficient reverse concatenated modulation code

#59
20130326305
2013-12-05

Data format using an efficient reverse concatenated modulation code for magnetic tape recording

#60
20130297983
2013-11-07

Data processing system with failure recovery

#61
20130290806
2013-10-31

Systems and methods for data decoder state preservation during extended delay processing

#62
20130283127
2013-10-24

Combined soft detection/soft decoding in tape drive storage channels

#63
20130283114
2013-10-24

Systems and methods for locating and correcting decoder mis-corrections

#64
20130283107
2013-10-24

Systems and methods for calibration coasting in a data processing system

#65
20130279040
2013-10-24

Combined soft detection/soft decoding in tape drive storage channels

#66
20130275986
2013-10-17

Data processing system with out of order transfer

#67
20130275827
2013-10-17

Multi-Section Non-Binary LDPC Decoder

#68
20130254623
2013-09-26

Systems and methods for variable redundancy data protection

#69
20130246877
2013-09-19

Systems and methods for compression driven variable rate decoding in a data processing system

#70
20130235920
2013-09-12

Systems and methods for data processing including pre-equalizer noise suppression

#71
20130232390
2013-09-05

Systems and methods for multi-matrix data processing

#72
20130232155
2013-09-05

Systems and Methods for Out of Order Data Reporting

#73
20130222939
2013-08-29

Read channel throughput management

#74
20130219233
2013-08-22

Systems and Methods for Quality Based Priority Data Processing

#75
20130198580
2013-08-01

Symbol flipping data processor

#76
20130173993
2013-07-04

Decoding apparatus and decoding method

#77
20130173990
2013-07-04

High-throughput iterative decoding's defect scan in retry mode of storage system channel

#78
20130170063
2013-07-04

Systems and methods for channel quality determination

#79
20130139023
2013-05-30

Variable Sector Size Interleaver

#80
20130111294
2013-05-02

Systems and Methods for Late Stage Precoding

#81
20130111289
2013-05-02

Systems and methods for dual process data decoding

#82
20130091400
2013-04-11

Systems and methods for parity shared data encoding

#83
20130091397
2013-04-11

Systems and methods for parity sharing data processing

#84
20130077186
2013-03-28

Systems and methods for pattern dependent target adaptation

#85
20130049997
2013-02-28

Bit converter and bit conversion method

#86
20130021689
2013-01-24

Storage media inter-track interference cancellation

#87
20130003209
2013-01-03

Channel circuit and seek method

#88
20120284585
2012-11-08

Systems and methods for queue based data detection and decoding

#89
20120262814
2012-10-18

Systems and methods for selective decoder input data processing

#90
20120233524
2012-09-13

Low-density parity check codes for holographic storage

#91
20120212849
2012-08-23

Systems and methods for data pre-coding calibration

#92
20120198304
2012-08-02

INFORMATION REPRODUCTION APPARATUS AND INFORMATION REPRODUCTION METHOD

#93
20120173950
2012-07-05

Systems and methods for efficient data storage

#94
20120166912
2012-06-28

Interleaving parity bits into user bits to guarantee run-length constraint

#95
20120155239
2012-06-21

CHANNEL CIRCUIT AND METHOD OF DETECTING DEFECT OF MAGNETIC DISK DRIVE

#96
20120127604
2012-05-24

Magnetic recording apparatus and data reading method

#97
20120089883
2012-04-12

Systems and methods for error correction using irregular low density parity check codes

#98
20120047396
2012-02-23

Identifying a defect in a data-storage medium

#99
20120033320
2012-02-09

Systems and methods for dynamic scaling in a read data processing system

#100
20120030539
2012-02-02

Error-floor mitigation of codes using write verification

#101
20120005552
2012-01-05

On-line discovery and filtering of trapping sets

#102
20110264980
2011-10-27

Systems and methods for low density parity check data decoding

#103
20110246856
2011-10-06

Systems and methods for efficient data storage

#104
20110209026
2011-08-25

Systems and methods for data recovery using enhanced sync mark location

#105
20110205653
2011-08-25

Systems and Methods for Data Recovery

#106
20110185264
2011-07-28

LDPC decoding with on the fly error recovery

#107
20110107178
2011-05-05

Decoder, perpendicular magnetic recording and reproducing device, receiving device, and decoding method

#108
20110096430
2011-04-28

Converting timing errors into symbol errors to handle write mis-synchronization in bit-patterned media recording systems

#109
20110080669
2011-04-07

Constrained on-the-fly interleaver address generator circuits, systems, and methods

#110
20110080211
2011-04-07

Systems and Methods for Noise Reduced Data Detection

#111
20110078540
2011-03-31

Interlaced iterative system design for 1K-byte block with 512-byte LDPC codewords

#112
20110055665
2011-03-03

Data modulation method, modulator, recording method, and recording apparatus

#113
20110035634
2011-02-10

Storage device with adaptive error-correcting code for improved areal efficiency

#114
20110029843
2011-02-03

Cycle slip detection and correction

#115
20110029837
2011-02-03

Systems and methods for phase dependent data detection in iterative decoding

#116
20100313083
2010-12-09

Channel constrained code aware interleaver

#117
20100306617
2010-12-02

Decoder device, decoding method and magnetic disk device

#118
20100269023
2010-10-21

Systems and methods for multilevel media defect detection

#119
20100097910
2010-04-22

Information readout device and information readout method

#120
20100079896
2010-04-01

Error correction mapping

#121
20100020429
2010-01-28

Converting timing errors into symbol errors to handle write mis-synchronization in bit-patterened media recording systems

#122
20090327832
2009-12-31

DECODER AND RECORDING/REPRODUCING DEVICE

#123
20090276685
2009-11-05

DATA DECODING APPARATUS, MAGNETIC DISK APPARATUS, AND DATA DECODING METHOD

#124
20090273492
2009-11-05

Systems and methods for queue based data detection and decoding

#125
20090213923
2009-08-27

Method and apparatus for channel detection

#126
20090213484
2009-08-27

Techniques for providing DC-free detection of DC equalization target

#127
20090207517
2009-08-20

“Flat analog” AFE coupled with an all digital architecture compensation read channel

#128
20090199073
2009-08-06

Encoding device, decoding device, encoding/decoding device, and recording/reproducing device

#129
20090177943
2009-07-09

ERROR CORRECTION CODING USING SOFT INFORMATION AND INTERLEAVING

#130
20090158125
2009-06-18

Recording/reproducing apparatus and recording/reproducing method

#131
20090122682
2009-05-14

Recording and/or reproducing method, recording and/or reproducing apparatus and information storage medium

#132
20090006931
2009-01-01

Techniques for generating bit reliability information in a post-processor using an error correction constraint

#133
20080301527
2008-12-04

Systems and methods for joint LDPC encoding and decoding

#134
20080240278
2008-10-02

Joint decoding of ISI (inter-symbol interference) channel and modulation codes

#135
20080218890
2008-09-11

Baseline correction apparatus

#136
20080104486
2008-05-01

Decoder and reproducing device

#137
20070110188
2007-05-17

Signal decoding method and device, and signal storage system

#138
20050240856
2005-10-27

Hologram recording and reproducing apparatus and hologram reproducing apparatus

#139
15914070
2018-10-23

Storage device and control method

#140
15168209
2017-08-22

On the fly formatting

#141
15158620
2019-01-29

Efficient syndrome calculation in processing a GLDPC code

#142
14930898
2017-09-12

Data storage device encoding and interleaving codewords to improve trellis sequence detection

#143
14611120
2016-05-31

On the fly formatting

#144
13672047
2016-03-22

Dual-stage data decoding for non-volatile memories