Western Digital has patented a data storage device with read channel circuits for processing data tracks. The device allows for overlapping processing of data tracks, enhancing error correction and data recovery capabilities. The technology involves postprocessing data sectors during subsequent track read operations, improving overall data decoding efficiency. GlobalData’s report on Western Digital gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Western Digital, was a key innovation area identified from patents. Western Digital's grant share as of February 2024 was 72%. Grant share is based on the ratio of number of grants to total number of patents.

Data storage device with overlapping processing of data tracks

Source: United States Patent and Trademark Office (USPTO). Credit: Western Digital Corp

A recently granted patent (Publication Number: US11929093B2) discloses a data storage device comprising a storage medium with multiple data tracks and a channel circuit. The channel circuit is designed to receive read signals for different data tracks sequentially, process the data sectors and error correction data using error correction codes during track read operation periods, and continue decoding data sectors from previous tracks during subsequent track read operation periods. The device also includes features like parity sectors, postprocessing failed sectors, and servo controllers to optimize data decoding and recovery operations.

Furthermore, the patent also covers a method for data processing involving receiving read signals for different data tracks, processing data sectors and error correction data using error correction codes during track read operation periods, and selectively postprocessing failed sectors based on predetermined thresholds. The method also includes positioning read heads, determining time thresholds for postprocessing, managing memory in read channel memory, and skewing read heads for additional processing time on prior data tracks. These innovative techniques aim to enhance data decoding efficiency and reliability in data storage devices with continuous data tracks of varying lengths, ensuring optimal performance and data recovery capabilities.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.