Patents by Inventor Frederick McGuire Hamilton

Frederick McGuire Hamilton 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).

  • Apparatus, method, and computer program for increasing scanner data throughput
    Patent number: 6462842
    Abstract: An apparatus, method, and computer program improve scanning time by transferring data from a scanner to an associated device at a rate approximately equal to the average data transfer rate. The computer program sets a control variable that controls hardware in the scanner to adjust the scanning clock frequency, the vertical resolution, and the horizontal resolution to approach the average data transfer rate. Scanning at the average data transfer rate improves scanning time because restarts are eliminated.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: October 8, 2002
    Assignee: National Semiconductor Corporation
    Inventor: Frederick McGuire Hamilton
  • Apparatus, method, and computer program to reduce distortion of scanner restarts
    Patent number: 6369918
    Abstract: An apparatus, method, and computer program for reducing distortion of a scanned image upon a resume after a pause by a scanner. A default phase difference is calculated by the computer program before the scan starts. The default phase difference is based on a phase relationship between a step signal, an integration signal, and a number of backward steps. The default phase difference is used to control the resumption with a relatively small number of circuit elements.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: April 9, 2002
    Assignee: National Semiconductor Corporation
    Inventors: Ronald Hou Kern Tom, Frederick McGuire Hamilton