News Column

Patent Issued for Over-Sampled Signal Equalizer

September 3, 2014

By a News Reporter-Staff News Editor at Electronics Newsweekly -- A patent by the inventors Yang, Shaohua (San Jose, CA); Lu, Jin (Lafayette, CO); Tan, Weijun (Longmont, CO), filed on December 20, 2012, was published online on August 19, 2014, according to news reporting originating from Alexandria, Virginia, by VerticalNews correspondents.

Patent number 8810948 is assigned to LSI Corporation (San Jose, CA).

The following quote was obtained by the news editors from the background information supplied by the inventors: "Disk-based storage devices such as hard disk drives (HDDs) are used to provide non-volatile data storage in a wide variety of different types of data processing systems. A typical HDD comprises a spindle which holds one or more flat circular storage disks, also referred to as platters. Each storage disk comprises a substrate made from a non-magnetic material, such as aluminum or glass, which is coated with one or more thin layers of magnetic material. In operation, data is read from and written to tracks of the storage disk via a read/write head that is moved precisely across the disk surface by a positioning arm as the disk spins at high speed."

In addition to the background information obtained for this patent, VerticalNews journalists also obtained the inventors' summary information for this patent: "In one embodiment, an apparatus comprises read channel circuitry and signal processing circuitry associated with the read channel circuitry. The signal processing circuitry comprises: an equalizer having an input coupled to an output of an analog-to-digital converter, the equalizer being configured to determine an equalized digital data signal from an oversampled digital data signal; a filter having an input coupled to an output of the equalizer, the filter being configured to filter the equalized digital data signal; a detector having an input coupled to an output of the filter, the detector being configured to determine a hard decision and reliability of the filtered digital data signal; and a decoder with an input coupled to an output of the detector, the decoder being configured to decode the filtered digital data signal based at least in part on the hard decision and reliability. The oversampled digital data signal comprises a first set of sampled digital data and a corresponding second set of sampled digital data, each of the samples in the first set of sampled digital data being offset from a corresponding one of the samples in the second set of sampled digital data by a phase difference.

"Other embodiments of the invention include, by way of example and without limitation, methods, storage devices, virtual storage systems, integrated circuits and computer-readable storage media having computer program code embodied therein."

URL and more information on this patent, see: Yang, Shaohua; Lu, Jin; Tan, Weijun. Over-Sampled Signal Equalizer. U.S. Patent Number 8810948, filed December 20, 2012, and published online on August 19, 2014. Patent URL:

Keywords for this news article include: Electronics, LSI Corporation, Signal Processing.

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Source: Electronics Newsweekly

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