Patents by Inventor Trevor J. Barnes

Trevor J. Barnes 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).

  • Patent number: 4766484
    Abstract: Apparatus for and a method of decoding a video color signal provides a digital wide band luminance signal. An analog signal V1 representing the low band luminance component of a coded video color input signal Icv, is obtained at a first analog filter 1. An analog signal Yhc representing high band luminance and chrominance components is obtained at second means (5) which subtracts the first analog signal Y1 from a delayed input signal Icv. Signal Yhc is synchronously demodulated to provide (B-Y) and (R-Y) chrominance component signals U.sub.1, V.sub.1, which are digitized. Via digital delay means, single line delayed signals Yd1, U.sub.0, V.sub.0 and double line delayed signals U.sub.-1, V.sub.-1 are obtained. High band luminance signals Yu, Yv are then obtained as a function of at least two of the respective chrominance component signals U.sub.1, U.sub.0 and U.sub.-1 ; and V.sub.-1, V.sub.0 and V.sub.-1.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: August 23, 1988
    Assignee: Avesco p.l.c.
    Inventors: John C. Clayton, Trevor J. Barnes