Patents by Inventor David Easingwood-Wilson

David Easingwood-Wilson 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).

  • Signature analysis
    Patent number: 4991175
    Abstract: Digital signal processing apparatus which can be tested by signature analysis is arranged so that a predetermined number of its ROM locations have stored therein pre-selected values whereby the signature analysis is independent of the contents of the remainder of the memory location. Appropriately valued bytes are stored in the N last-record memory location and these bytes establish a predetermined signature for each data pin regardless of firmware changes.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: February 5, 1991
    Assignee: Hewlett-Packard
    Inventor: David Easingwood-Wilson