| 摘要 |
<p>A variable length decoder for processing an input bit stream (e.g., an MPEG digital video bit stream) which includes a plurality of qualifying and non-qualifying types of variable length code words. The variable length decoder includes an input circuit for receiving the input bit stream and providing a sequence of available input bits, a shifter circuit for providing a decoding window that includes one or more code words contained in the sequence of available input bits, a code word length decoding circuit for determining whether or not the decoding window contains a pair of qualifying code words, and for determining the combined length of the pair of qualifying code words and producing a combined length signal representative of the determined combined length, if it is determined that the decoding window contains a pair of qualifying code words, and further, for determining the length of a leading code word contained in the decoding window and producing a leading word length signal representative of the determined length of the leading code word.</p> |
