Error Concealment
AssigneeCambridge Silicon Radio Limited
InventorsXuejing Sun, Sameer Gadre, Scott Plude
Life of this patent
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Abstract
A method and apparatus for selectively replacing damaged portions of a data stream. The method comprises analyzing the data stream to identify damaged portions therein; selecting a damaged portion for replacement; and replacing the selected damaged portion. The selected damaged portion is selected for replacement in dependence on a rate of replacement, the rate of replacement being that at which previous portions of the data stream have been replaced.
Claims20
A method of selectively replacing damaged portions of a data stream, the method comprising:
- for each damaged portion, estimating an error rate of the data stream;
- and
- applying a pre-defined algorithm to determine whether to replace the damaged portion, wherein the algorithm:
- (a) causes the output of the damaged portion if the estimated error rate is above a threshold;
- and
- (b) has a propensity to cause the output of a replacement portion in place of the damaged portion if the estimated error rate is below the threshold.
A method of selectively replacing damaged portions of a data stream, the method comprising:
- for each damaged portion, estimating an error rate of the data stream;
- and
- applying a pre-defined algorithm to determine whether to replace the damaged portion, wherein the algorithm:
- (a) causes the output of a replacement portion in place of the damaged portion if the estimated error rate is below the threshold;
- and
- b) has a propensity to cause the output of the damaged portion if the estimated error rate is above a threshold.
Dependencies are inferred from the claim text.