Patents by Inventor Krishan Ramachandran

Krishan Ramachandran 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).

  • Vector coding of computer graphics material
    Patent number: 4307377
    Abstract: Computer graphics material after raster scanning and digitizing is examined for linear narrow width areas of like light value, typically black or white. Runs of like value on successive scan lines are compared for contiguity and, when found, are compactly coded by coordinates of first and last scan lines defining each area and thickness. Data compaction ratios up to 36 to 1, as compared to the amount of data required to store data for every picture element, can be achieved in real time.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: December 22, 1981
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: William Pferd, Krishan Ramachandran