The assignee for this patent, patent number 8625217, is
Reporters obtained the following quote from the background information supplied by the inventors: "Various data processing systems have been developed including storage systems, cellular telephone systems, and radio transmission systems. In such systems, data is transferred from a sender to a receiver via a medium. For example, in a storage system, data is sent from a sender (e.g., a write function) to a receiver (e.g., a read function) via a storage medium. As information is stored and transmitted in the form of digital data, errors are introduced that, if not corrected, can corrupt the data and render the information unusable. The effectiveness of any transfer is impacted by any losses in data caused by various factors.
"Consequently, error checking systems have been developed to detect and correct errors of digital data. Error checking systems are used, for example, to process data retrieved from a magnetic hard disk drive (HDD). Each data sector of the disk drive can have different noise, jitter, and distortion characteristics or signal to noise ratios (SNR), which can be due, for example, to magnetic media defects, off-track writing, high fly height of magnetic write heads during a writing operation, large phase disturbance, and so forth. The throughput of a HDD is affected by the number of read errors in a data sector, based in part on the SNR, and by the speed at which the read channel can recover from a read error by correcting the errors."
In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventors' summary information for this patent: "Techniques for performing branch metric computations and noise predictive calibration/adaptation for over-sampled equalized sample data are disclosed. In one or more embodiments, the techniques are implemented in a data processing apparatus. The data processing apparatus includes a parallel to serial convertor configured to receive a first stream of sample data and a second stream of sample data. The parallel to serial convertor is operable to combine the first stream of sample data and the second stream of sample data into a combined stream of sample data. The data processing apparatus further includes a filter that is configured to receive the combined stream of sample data and whiten noise in the combined stream of sample data.
"This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter."
For more information, see this patent: Yang, Shaohua; Wu, Xuebin. Branch Metric Computation and Noise Predictive Calibration/Adaptation for Over-Sampled Y Samples. U.S. Patent Number 8625217, filed
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