1
yuan xing Lee
Shaohua Yang, Richard Leo Galbraith, Ksenija Lakovic, Yuan Xing Lee, Travis Oenning, Jongseung Park, Hideki Sawaguchi, Bruce A Wilson: Decoding techniques for correcting errors using soft information. Hitachi Global Stroage Technologies Netherlands, Steven J Cahill, May 25, 2010: US07725800 (35 worldwide citation)

Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the ...


2
yuan xing Lee
Shaohua Yang, Weijun Tan, Yuan Xing Lee: Systems and methods for stepped data retry in a storage system. LSI Corporation, Hamilton DeSanctis & Cha, May 8, 2012: US08176404 (24 worldwide citation)

Various embodiments of the present invention provide systems and methods for data processing retries. As an example, a data processing retry circuit is discussed that includes a stepped erasure window register, and an erasure flag set circuit. The stepped erasure window register includes: an erasure ...


3
yuan xing Lee
Zongwang Li, Shaohua Yang, Yang Han, Hao Zhong, Yuan Xing Lee, Weijun Tan: Turbo-equalization methods for iterative decoders. LSI Corporation, Mendelsohn Drucker & Associates P C, Craig M Brown, Steve Mendelsohn, October 16, 2012: US08291299 (24 worldwide citation)

Certain embodiments of the present invention are improved turbo-equalization methods for decoding encoded codewords. In one embodiment, in global decoding iteration i, the magnitude values of all decoder-input LLR values (Lch) are adjusted based on the number b of unsatisfied check nodes in the deco ...


4
yuan xing Lee
Yuan Xing Lee, George Mathew, Shaohua Yang, Hongwei Song, Weijun Tan, Hao Zhong: Systems and methods for storage channel testing. LSI Corporation, Hamilton DeSanctis & Cha, August 2, 2011: US07990642 (23 worldwide citation)

Various embodiments of the present invention provide systems and methods for validating elements of storage devices. A an example, various embodiments of the present invention provide semiconductor devices that include a write path circuit, a read path circuit and a validation circuit. The write pat ...


5
yuan xing Lee
Hao Zhong, Shaohua Yang, Weijun Tan, Changyou Xu, Yuan Xing Lee: Systems and methods for hard decision assisted decoding. LSI Corporation, Hamilton DeSanctis & Cha, May 14, 2013: US08443267 (20 worldwide citation)

Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is disclosed that includes a processing loop circuit having a data detector and a soft decision decoder. The data detector provides a detected output, and the soft deci ...


6
yuan xing Lee
Weijun Tan, Shaohua Yang, George Mathew, Kelly Fitzpatrick, Hao Zhong, Yuan Xing Lee: Systems and methods for using intrinsic data for regenerating data from a defective medium. AGERE Systems, Hamilton DeSanctis & Cha, April 17, 2012: US08161357 (19 worldwide citation)

Various embodiments of the present invention provide systems and methods for data regeneration. For example, a system for data regeneration is disclosed that includes a data input derived from the medium. A data detector and a data recovery system receive the data input. The data detector provides a ...


7
yuan xing Lee
Shaohua Yang, Yuan Xing Lee, Changyou Xu, Richard Rauschmayer, Harley Burger, Kapil Gaba: Systems and methods for codec usage control during storage pre-read. LSI Corporation, Hamilton DeSanctis & Cha, August 21, 2012: US08250434 (16 worldwide citation)

Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing circuit is disclosed that includes an increased iteration enable signal, a first detector circuit, a second detector circuit, and a data decoding circuit. The first detector c ...


8
yuan xing Lee
Shaohua Yang, Mario Blaum, Richard Leo Galbraith, Ksenija Lakovic, Yuan Xing Lee, Travis Oenning, Jongseung Park, Hideki Sawaguchi: Reduced complexity error correction encoding techniques. Hitachi Global Storage Technologies Netherlands, Steven J Cahill, September 15, 2009: US07590920 (16 worldwide citation)

An error correction encoder inserts redundant parity information into a data stream to improve system reliability. The encoder can generate the redundant parity information using a composite code. Dummy bits are inserted into the data stream in locations reserved for parity information generated by ...


9
yuan xing Lee
Weijun Tan, Hao Zhong, Yuan Xing Lee, Richard Rauschmayer, Shaohua Yang, Harley Burger, Kelly Fitzpatrick, Changyou Xu: Systems and methods for reducing attenuation of information derived from a defective medium. AGERE Systems, Hamilton DeSanctis & Cha, April 3, 2012: US08149527 (14 worldwide citation)

Various embodiments of the present invention provide systems and methods for data regeneration. For example, a method for data regeneration is disclosed that includes receiving a data input derived from a medium, determining a media defect corresponding to the data input, and determining an attenuat ...


10
yuan xing Lee
Yuan Xing Lee, Fuminori Sai, Shaohua Yang: Methods and apparatus for detecting a syncMark in a hard disk drive. LSI Corporation, May 29, 2012: US08190831 (14 worldwide citation)

Methods and apparatus are provided for detecting a syncMark in a read channel, such as a hard disk drive. A syncMark is detected in a sector in an iterative read channel by obtaining a sector signal from a storage media, the sector signal comprising a first syncMark, data and a second syncMark subst ...