Avago Technologies General IP (singapore) Pte. Ltd.

Seagate Technology Incorporated

Lsi Corporation

Seongwook Jeong

Haitao Xia

Erich Franz Haratsch

Bruce Alexander Wilson

Abdelhakim Alhussien

Weijun Tan

Jianzhong Huang

Yu Kou

Kelly K Fitzpatrick

Lu Pan, Sr

Lu Pan

Systems, devices, and methods are presented that allow a data channel to adaptively vary a change in a reference voltage used to read data from a solid state memory. The change in the reference voltage may be determined based on a measured error statistic of the solid state memory. A hard decision low density parity check (HLDPC) decoder may be utilized in conjunction with a soft decision low density parity check (SLDPC).

Adaptive read retry optimization

A data detector includes a branch metric calculator operable to calculate branch metrics for transitions between states in a trellis for the data detector, and a pruning circuit operable to prune prohibited states from the trellis. The states in the trellis comprise basic states and extended states, where the extended states have a greater number of bits than the basic states.

Data detector with extended states

A communication system and a noise predictive calibration method are disclosed. The communication system includes a decoder configured to decode an input signal, wherein the decoder produces one of: a converged data output when the decoder decodes the input signal successfully, and a non-converged data output when the decoder decodes the input signal unsuccessfully. The communication system also includes a convergence monitor configured to determine a calibration procedure based on at least one of: a number of times where the decoder decodes successfully, and a number of times where the decoder decodes unsuccessfully. A noise predictive calibration circuit is configured to utilize output produced by the decoder without qualification when the convergence monitor indicates utilization of a first calibration procedure. The noise predictive calibration circuit is further configured to utilize only the converged data output produced by the decoder when the convergence monitor indicates utilization of a second calibration procedure.

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

A data processing system includes a binary data detector having a hard decision output, a reliability calculator operable to calculate an error pattern reliability metric for each of a number of dominant error patterns associated with the hard decision output, and a converter operable to convert the error pattern reliability metrics to multi-level soft information.

Systems and methods of converting detector output to multi-level soft information

The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for performing loop feedback in a data processing system.

Systems and methods for loop feedback

The present invention is related to systems and methods for adaptive parameter modification in a data processing system.

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Sunnyvale, CA, United States of America

Seongwook Jeong