The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2000
Filed:
Dec. 19, 1997
Ronald Joseph Kolczynski, Hamilton, NJ (US);
Thomson Consumer Electronics, Inc., Indianapolis, IN (US);
Abstract
A method and apparatus for producing a wipe sequence on a display device from incoming compressed video bitstreams, accomplishes the wipe function processing entirely in the compressed domain of the compressed video bitstreams. The old and new video bitstreams or sequences separately undergo a 2-dimensional convolution between its decoded DCT coefficients and stored DCT coefficients of a particular known wipe function. Each convolved bitstream is buffered with its quantization scale and then summed with the other. The summed output bitstream is used by a multiplexer along with each bitstream's decoded macroblock data to provide a seamed output bitstream. A controller controls the process such as frame correlation for convolution and output multiplexing of the summed bitstreams.