Patents by Inventor Alex Lushtak

Alex Lushtak 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).

  • VGA controller circuitry
    Patent number: 5581279
    Abstract: The "chip set" of a graphics adapter interface card is reduced to a monolithic integrated circuit that includes a programmable analog clock circuit for producing a video memory clock and a video dot clock. A digital graphics adapter controller is responsive to the video memory clock and the video dot clock to produce a video information stream. A random-access memory is responsive to the video information stream to produce a video display information stream, and a digital-to-analog converter is responsive to the video display information stream to convert the video display information stream to analog signals for application to a video display device.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: December 3, 1996
    Assignee: Cirrus Logic, Inc.
    Inventors: Chieh Chang, Man S. Lee, Alex Lushtak