Abstract: Disclosed approaches for accumulating pre-carry data include initializing hold sum to a sum of a LSB of the first pre-carry word of an input stream and an MSB of a second pre-carry word by a pre-carry processing circuit. For successive pre-carry words, the LSB of pre-carry word i and the MSB of pre-carry word i+1 are summed into a next sum. An FFcount is incremented by an adder circuit if the LSB of the next sum is equal to 0xFF. If the LSB of the next sum is not equal to 0xFF, the pre-carry processing circuit outputs either: the hold sum followed by FFcount consecutive 0xFF values, if the MSB of the next sum is equal to 0x00, or the hold sum plus one, followed by FFcount consecutive 0x00 values, if the MSB of the next sum is not equal to 0x00. If the LSB of the next sum is not equal to 0xFF, the hold sum is updated with the LSB of the next sum, and the FFcount is reset to 0. Processing repeats for successive pre-carry words in the stream.

Abstract: A video decoder includes an input configured to receive a plurality of bins of a video digital data stream to be decoded. A processor and a memory associated therewith are configured to perform parallel decoding of multiple bins of the plurality of bins in a given processing cycle based upon a table containing delta range values and probable symbols.