Patents by Inventor William B. Risley

William B. Risley 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).

  • Programmable delay for digitizer circuits
    Patent number: 4529930
    Abstract: A digitizer circuit for converting analog waveforms displayed upon a CRT screen into digital signals suitable for storage in memory employs a microprocessor to determine, from user-specified parameters, the times at which the output of the CRT vertical amplifier is to be sampled. The user has great flexibility in defining sample resolution and the location of the sample window on the displayed waveform in which the samples are to be taken and is permitted to intensify the sample window on the CRT display before any samples are taken in order to view the sample window in relation to the remainder of a displayed waveform.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: July 16, 1985
    Assignee: Hewlett-Packard Company
    Inventors: Eddie A. Evel, Robert M. Landgraf, Walter A. Fischer, William B. Risley