Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1995-10-23
1996-09-24
Chin, Stephen
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
341 67, 341106, H04B 166, H03M 740, H03M 700
Patent
active
055598315
ABSTRACT:
A variable-length decoder system decodes a variable-length code having different code prefixes in an input bit stream. A code prefix is located in the bit stream and used to determine a number of bits to be selected from the input bit stream according to an access of a code book. Additionally, a pointer, directing access to a different code book, may also be indicated by the access of the first code book according to the located code prefix. A determination is made in this decoder system whether to perform the operation of determining a number of bits to be selected from the input stream or accessing a second code prefix table. If the code value is valid, the number of bits is selected and appended to the code prefix to form a code word which is later decoded by the system of the present invention. If another table is indicated a further code prefix is located in the input stream and the further lookup table is accessed in accordance with the further code prefix.
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Information Theory Encoding, by Norman Abramson, McGraw-Hill Book Company, pp. 76-85.
Chin Stephen
Intel Corporation
Murray William H.
Phan Hai H.
Silverio John V.
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