发明名称 |
VARIABLE LENGTH CODING ENCODER AND DECODER USING MULTIPLE HUFFMAN TABLE |
摘要 |
An apparatus for variable-length-coding input symbols using a plurality of variable-length-code tables includes N variable-length-code tables each having a symbol-codeword association different from the others according to statistics regarding the symbols and a variable-length-coding device for coding the input symbols according to each of the variable-length-code tables for every block in a predetermined block data unit, for generating codewords, and for providing both table information representing each of the variable-length-code tables utilized in generating the respective codewords and a control signal indicating that variable-length-coding to a predetermined block data unit has been completed. The apparatus also includes buffers which store the codewords generated by the variable-length-coding device, an optimum table determining device receiving the output codewords for controlling the buffer so as to output codewords with a minimum amount of data for the block data unit, for supplying the table information from the variable-length-coding device and for providing table selection information representing a variable-length-code table producing the minimum amount of data for an input block data unit. The apparatus further includes a first switching circuit which receives table selection information and codewords and respectively outputs data in response to the output control signal. The apparatus advantageously can improve data compression efficiency. A complementary decoder, which can be used in building a communication system, is also described. |
申请公布号 |
KR100209877(B1) |
申请公布日期 |
1999.07.15 |
申请号 |
KR19940031360 |
申请日期 |
1994.11.26 |
申请人 |
SAMSUNG ELECTRONICS CO, LTD. |
发明人 |
PARK, JOO-HA;JEON, BYUNG-WOO;CHUNG, JEI-CHANG |
分类号 |
H04N7/24;G06T9/00;H03M7/42;H04N7/26;H04N7/30;(IPC1-7):H04N7/24 |
主分类号 |
H04N7/24 |
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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