HGST Assigned Patent

HGST Netherlands B.V., Amsterdam, Netherlands, has been assigned a patent (8,953,266) developed by Dhanda, Abhishek, Hirano, Toshiki, and Semba, Tetsuo, San Jose, CA, for a “method and structure for improving performance and storage density in a data storage device .”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A data storage device with improved data storage densities, coupled with lower hard error and write-inhibit events is described. A feed-forward write inhibit, (FFWI) method enables data tracks to be written more densely. Alternatively, the FFWI method may reduce the hard error and write inhibit events to improve data storage performance. A concept of virtual tracks enables the FFWI method to be applied to the writing of circular data tracks with non-circular servo tracks, or to the writing of non-circular data tracks with PES data from circular servo tracks–in both cases, improvements to performance and/or storage densities are enabled. The FFWI method may also be applied to the case of both non-circular servo and data tracks.“

The patent application was filed on August 24, 2012 (13/593,991).