Patents by Inventor Gary Wan

Gary Wan 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).

  • Multi-level analog composite video signal generating apparatus
    Patent number: 5038204
    Abstract: Apparatus responsive to digital video data features a video amplitude digital to analog converter for controlling the full scale outputs of other digital to analog converters for generating multi-level analog composite video signals. The digital to analog converter outputs are controlled and fine tuned to meet particular requirements. The implementation is based on a consistent ratio between the white, sync and black video levels of the composite signals, irrespective of the differences between the required white video levels.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: August 6, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Gary Wan, Richard B. Huykman
  • System for providing control signals for raster scan displays
    Patent number: 4958227
    Abstract: A system for providing control signals for raster scan displays includes a horizontal timing random access memory and a vertical state random access memory arranged in a presettable counter configuration containing multiple levels of information. This approach allows the generation of the control signals in a sychronized relationship using a common counter arrangement so as to obviate the need for repetitive circuitry and without compromising performance.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: September 18, 1990
    Assignee: Allied-Signal Inc.
    Inventor: Gary Wan