Patents by Inventor Patrick M. Chan

Patrick M. Chan 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).

  • Method and apparatus for stressing the data window in magnetic storage devices
    Patent number: 4726022
    Abstract: A system for controllably varying the width of the data window in a magnetic storage device to perform comparative data detection error rate measurements thereon is provided. The system generates the programmably and continuously variable stressed data window symmetrically within, and in locked phase with, the full data window under the control of a single current DAC in the VCO of the device.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: February 16, 1988
    Assignee: International Business Machines Corporation
    Inventors: Patrick M. Chan, Shin C. Chen