Patent ID: 8194737
Filing Date: 2012-06-05
Classification: H03M,H04N

Abstract:
1. An apparatus for modifying predicted values in a predicted image for input to a decoder, comprising: an information bit generator for obtaining information bit planes one by one from the predicted image, in sequence from a most significant information bit plane to a least significant information bit plane; a prediction error locator for receiving decoded bit planes from the decoder, comparing each one of the decoded bit planes with an equally significant one of the information bit planes obtained by the information bit generator to identifying locations of prediction errors; and an information modifier for modifying values in each one of the information bit planes obtained by the information bit generator at the locations of prediction errors identified by the prediction error locator in a more significant bit plane, and supplying the information bit planes, thus modified, to the decoder, wherein when the prediction error locator identifies the location of a prediction error in one information bit plane, the information modifier modifies the bit values in the identified location in all information bit planes less significant than the one information bit plane.