Matsushita Electric Industrial Co., Ltd.

Patrick William Devaney

Thomas J Leacock

Daniel Chandran Gnanaprakasam

A method and apparatus that generates a time-multiplexed channel surfing signal at television head-end sites. The system includes circuitry that receives channel feeds which are analog signals or digitally encoded signals. The channel feeds are segmented and segments from each feed are combined to produce a combined channel feed which is transmitted with the channel feeds.

Apparatus and method for generating a time-multiplexed channel surfing signal at television head-end sites

A video signal encoding/decoding system reduces ringing noise by using a post-filter which performs anisotropic diffusion on decoded data. The exemplary system uses an encoding/decoding technique such as that developed by the Moving Picture Experts Group (MPEG). The post-filter processes individual blocks of pixels, assigning an individual edge significance threshold to each block. Noise removal occurs if the edge strength is below the threshold and is inhibited if the edge strength is above the threshold.

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Freehold, NJ, United States of America

Patrick William Devaney