H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 7/42 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01)
Patent
CA 2091815
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 wards 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.
Krause Edward A.
Moroney Paul
Paik Woo H.
Pollmann Stephen C.
Shen Paul
General Instrument Corporation
Ridout & Maybee Llp
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