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Inodyn NewMedia Assigned Patent

Retrieval of damaged payload data on SMR data carrier

Inodyn NewMedia GmbH, Neckargemuend, Germany, has been assigned a patent (9,336,096) developed by Pantel, Lothar, Neckargemuend, Germany, for a “retrieval of damaged payload data on a shingled magnetic recording data carrier.

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A defect management system for storage devices is disclosed, which may be used in connection with shingled magnetic recording, (SMR). Overlapping data tracks, separated by guard regions, are written by a write element whose track width is at least twice as wide as the track width of a read element. Depending on the embodiment, data recovery of a defective track or sector is attained by evaluating the contents of an adjacent track or guard region: if the adjacent track or guard region encompasses equivalent data, due to the width of the write element, this data may be used as a complement or as a substitute for the defective track or sector. This may reduce the risk of data loss. The capacity of a storage device may be increased by balancing out the probability of read errors with the probability that an adjacent track may encompass equivalent data.

The patent application was filed on March 2, 2015 (14/636,006).

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