51
yuan xing Lee
Shaohua Yang, Weijun Tan, Yuan Xing Lee: Systems and Methods for Multilevel Media Defect Detection. Agere Systems, Hamilton DeSanctis & Cha, October 21, 2010: US20100269023-A1

Various embodiments of the present invention provide systems and methods for deriving data from a defective media region. As an example, a method for deriving data from a defective media region is disclosed that includes providing a storage medium and performing a media defect detection that indicat ...


52
yuan xing Lee
Shaohua Yang, Hao Zhong, Weijun Tan, Richard Rauschmayer, Yuan Xing Lee: Systems and Methods for Queue Based Data Detection and Decoding. LSI Corporation, November 8, 2012: US20120284585-A1

Various embodiments of the present invention provide systems and methods for variable iteration data processing.


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yuan xing Lee
Shaohua Yang, Hao Zhong, Weijun Tan, Richard Rauschmayer, Yuan Xing Lee: Systems and Methods for Queue Based Data Detection and Decoding. LSI Corporation, Hamilton DeSanctis & Cha, November 5, 2009: US20090273492-A1

Various embodiments of the present invention provide systems and methods for data processing. For example, a variable iteration data processing system is disclosed that includes at least a first detector, a second detector, a decoder, and a queuing buffer. The first detector is operable to perform a ...


54
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 Technologies Netherlands, Steven J Cahill, February 22, 2007: US20070043997-A1

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 ...


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yuan xing Lee
Shaohua Yang, George Mathew, Yang Han, Zongwang Li, Yuan Xing Lee: Amplitude-based approach for detection and classification of hard-disc defect regions. LSI Corporation, September 29, 2011: US20110235490-A1

In a hard-disc drive, a defect region on the hard disc is classified as corresponding to either thermal asperity (TA) or media defect (MD) by generating two statistical measures. A first measure (e.g., ∝1) is based on (i) the magnitudes of one or both of signal values (e.g., equalizer input or outpu ...


56
yuan xing Lee
Hao Zhong, Weijun Tan, Yang Han, Zongwang Li, Shaohua Yang, Yuan Xing Lee: Systems and Methods for Utilizing Circulant Parity in a Data Processing System. LSI Corporation, Hamilton DeSanctis & Cha, February 3, 2011: US20110029839-A1

Various embodiments of the present invention provide systems and methods for data processing. For example, a method for data processing is disclosed that includes receiving a codeword that has at least a first circulant with a plurality of data bits and a first circulant parity bit, a second circula ...


57
Shaohua Yang, Zining Wu: Likelihood metric generation for trellis-based detection and/or decoding. Marvell International, September 28, 2010: US07805664 (95 worldwide citation)

Systems and methods for generating likelihood metrics for trellis-based detection and/or decoding are described. In some embodiments, likelihood metrics for a first subset of bit locations in an error pattern (e.g., bit locations that fall within the error event update window) are updated based on a ...


58
Shaohua Yang, Zining Wu: Nonlinear viterbi complexity reduction. Marvell International, June 14, 2011: US07961797 (85 worldwide citation)

System and methods for reducing the complexity or area of a non-linear Viterbi detector. In some embodiments, a Viterbi detector calculates branch metrics for a subset of the branches in a trellis diagram. This subset may be selected based on comparing an equalized signal with a signal level table o ...


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Weijun Tan, Shaohua Yang, Hongwei Song: Method for detecting short burst errors in LDPC system. LSI Corporation, Suiter Swantz pc llo, June 12, 2012: US08201051 (74 worldwide citation)

The present invention is a device for detecting short burst errors. The device includes a first signal input, wherein the first signal input is configured to receive a first signal. The device includes a second signal input, wherein the second signal input is configured to receive a second signal. T ...


60
Shaohua Yang, Zining Wu, Gregory Burd, Xueshi Yang, Hongwei Song, Nedeljko Varnica: Error correction system using an iterative product code. Marvell International, August 28, 2012: US08255763 (38 worldwide citation)

An error correction system includes an iterative code that employs an interleaved component code and an embedded parity component code. On the transmission side, input signals received at an input node are encoded based on the interleaved code, which encodes an interleaved version of the input data ...