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 (34 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 (23 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
Ivana Djurdjevic, Bruce Alexander Wilson, Mario Blaum, Richard Leo Galbraith, Ksenija Lakovic, Yuan Xing Lee, Zongwang Li, Travis Roger Oenning: Techniques for generating bit reliability information in a post-processor using an error correction constraint. Hitachi Global Storage Technologies Netherlands, Steven J Cahill, October 11, 2011: US08037394 (23 worldwide citation)

Techniques are provided that generate bit reliabilities for a detected sequence. A detector generates the detected sequence. According to one embodiment, a post-processor finds a first set of combinations of one or more error events in the detected sequence satisfying a complete set or a subset of e ...


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
George Mathew, Yuan Xing Lee, Hongwei Song, Jeffrey P Grundvig, Viswanath Annampedu: Systems and methods for fly-height control using servo address mark data. LSI Corporation, Hamilton DeSanctis & Cha, November 8, 2011: US08054573 (18 worldwide citation)

Various embodiments of the present invention provide systems and methods for determining fly-height adjustments. For example, various embodiments of the present invention provide storage devices that include a storage medium, a read/write head assembly disposed in relation to the storage medium (278 ...


8
yuan xing Lee
George Mathew, Yuan Xing Lee, Hongwei Song: Systems and methods for adaptive write pre-compensation. LSI Corporation, Hamilton DeSanctis & Cha, April 12, 2011: US07924518 (18 worldwide citation)

Various embodiments of the present invention provide systems and methods for write pre-compensation. For example, various embodiments of the present invention provide methods for modifying magnetic information transfer. The methods include retrieving magnetically represented data from a storage medi ...


9
yuan xing Lee
George Mathew, Yuan Xing Lee, Hongwei Song, Jefferson E Singleton: Systems and methods for adaptive CBD estimation in a storage device. LSI Corporation, Hamilton DeSanctis & Cha, April 10, 2012: US08154818 (17 worldwide citation)

Various embodiments of the present invention provide systems and methods for adaptive channel bit density estimation. For example, various embodiments of the present invention provide methods for adaptively estimating channel bit density. Such methods include providing a storage medium (178) that in ...


10
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 (17 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 ...



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