Apparatus for concealing error in transform coding of a motion p

Details Apparatus for concealing error in transform coding of a motion p Apparatus for concealing error in transform coding of a motion p

1992-12-03

1995-05-30

Envall, Jr., Roy N.

Excavating

348616, G06F 1100, H04L 100

Patent

active

054208726

ABSTRACT:
An apparatus for concealing an error of a moving pictures transform coding includes the first concealment circuit (19) for analyzing data according to a type of the data, the data being error-detected but not corrected by an error correction decoding by the decoder (12), for replacing the data with a specific data according to the analyzed result by using a predetermined method, and for outputting a specific signal therefrom, and the second concealment circuit (22) connected to the first concealment circuit (19) for replacing reproduced pixel values of an error-occurred block with reproduced pixel values of a previous frame according to the signal output from the first concealment circuit (19) in case that the data being error-detected but not corrected is data of a predetermined frequency component or data of an additional information.

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"Digital-Video Recording Techniques", pp. 122-124, The Nikkan Kogyo Shimbun Ltd., Tokyo, Japan.
M. Saito, "An Error Concealment Method Against Transmission Error in DCT Coding", PCS91, 6. 5-1, pp. 185-188.

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