Patents by Inventor Gary William Walker

Gary William Walker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Implementing BER-list modulation code for hard disk drives
    Patent number: 9886979
    Abstract: A method, apparatus, and system are provided for implementing an enhanced modulation code for hard disk drives (HDDs). A modulation code directly uses Bit Error Rate (BER) information for different user patterns to construct a coded word minimizing possible error rate. The modulation code has a flexible code rate that simplifies code optimization relative to Coded Bit Density (CBD), signal to noise ratio (SNR) and noise color.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: February 6, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: Richard Leo Galbraith, Weldon Mark Hanson, Iouri Oboukhov, Gary William Walker