Patents by Inventor Wilbert Parisoe

Wilbert Parisoe 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).

  • AC line multiplexing for a multi-digit display system
    Patent number: 4005369
    Abstract: A two digit display system includes an AC line operated transformer with a center tapped secondary supplying a pair of diodes to produce half wave rectified voltages 180.degree. out-of-phase for alternately activating two 7-segment digital display devices. One half wave voltage is reshaped and supplied to a multiplexing circuit for alternately supplying, in synchronism with the corresponding display device activation, BCD information from separate tens and units storage devices to a single decoder-driver for conversion of the BCD information into digital information for display.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: January 25, 1977
    Assignee: Zenith Radio Corporation
    Inventor: Wilbert Parisoe