Motorola Corporation

David D Nicozisin

Kevin J O'Connell

Bhavan Gandhi

James C Brailean

A method and apparatus for reducing error propagation in digital video signals using random forced intra-refresh of macroblocks. One or more predetermined regions are defined for each digital video frame. Within each predetermined region, a number of macroblocks are selected according to a random permutation of the macroblocks within the region. The selected macroblocks are intra-coded, while the remaining macroblocks are coded according to a standard video compression protocol. This approach provides an efficient method for mitigating error propagation in a decoder. Interior regions may be smaller than exterior regions, providing higher quality for the interior regions, where sensitivity to errors is higher.

Method and apparatus for random forced intra-refresh in digital image and video coding

The present invention includes a device, article of manufacture, method, memory and computer-readable memory for removal of coding errors introduced through a compression process. The device includes an error control logic unit (,) that is coupled to receive decompressed pixel information of a video decoder and is used for detecting coding errors and a filter (,) that is coupled to the error control logic unit (,) and is used for preparing decompressed pixel information for display.

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Schaumburg, IL, United States of America

David D Nicozisin