发明名称 |
VARIABLE LENGTH CODE WORD DECODER FOR USE IN DIGITAL COMMUNICATION SYSTEMS |
摘要 |
Apparatus (10) is provided for decoding variable length code words to recover transform coefficients, such as DCT transform coefficients provided by a high definition television encoder. A first category of the code words has a length of no more than n bits. A second category has a length of greater than n bits. A feedback ROM (22) is used to decode the code words. Code words from the first category are processed by directly addressing a lookup table (80) in the ROM (22). Code words from the second category are processed using multiple passes through the ROM (22), wherein a portion of the data output during a prior pass is fed back (90) to address the memory during a subsequent pass. <IMAGE> |
申请公布号 |
CA2091815(A1) |
申请公布日期 |
1993.09.27 |
申请号 |
CA19932091815 |
申请日期 |
1993.03.17 |
申请人 |
GENERAL INSTRUMENT CORPORATION |
发明人 |
POLLMANN, STEPHEN C.;KRAUSE, EDWARD A.;SHEN, PAUL;PAIK, WOO H.;MORONEY, PAUL |
分类号 |
H03M7/40;G06T9/00;H03M7/42;H04N7/26;H04N7/30;(IPC1-7):H03M7/00 |
主分类号 |
H03M7/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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