Patents by Inventor Kamalesh U. Patel

Kamalesh U. Patel 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).

  • In-service realtime picture quality analysis
    Patent number: 6246435
    Abstract: An in-service, realtime picture quality analysis method determines the degradation of a test video signal at a test point with respect to a reference video signal by generating from the reference video signal a set of parameters that characterize the images represented by the reference video signal. The set of parameters are inserted into a transport stream that also has an encoded version of the reference video signal. At the test point the set of parameters is extracted from the transport stream, and the test video signal is decoded from the transport stream. A corresponding set of parameters is generated for the test video signal, and the two sets of parameters are compared by a picture quality analysis algorithm to produce a picture quality rating that represents the degradation of the test video signal.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: June 12, 2001
    Assignee: Tektronix, Inc.
    Inventor: Kamalesh U. Patel