Patents by Inventor Walter E. Williams, Jr.

Walter E. Williams, Jr. 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).

  • Patent number: 4241295
    Abstract: A lighting control system for the control of the intensity of a plurality of lights, such as in theatre and television lighting, operating entirely by digital means. A novel trigger pulse generating means provides a trigger pulse for each SCR-type dimmer the phase angle of which pulse is a function of a binary encoded intensity indicating signal. The transfer characteristic of the system is controlled by a time-base generator providing and accumulating a phase encoded pulse train using information stored in a memory. The entire process is accomplished by binary means. The system provides more reliable, dependable and accurate lighting control at less cost, with especial reference to the marginal dimmer cost, than systems heretofore available.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: December 23, 1980
    Inventor: Walter E. Williams, Jr.