发明名称 |
COMPRESSION OF AN ELECTRONIC PROGRAMMING GUIDE |
摘要 |
Television programming information comprising an electronic programming guide is compressed by more than fifty percent, and decompressed in environments with only moderate processing power and storage space. The coding scheme of the present invention is based on Huffman coding of characters comprising the electronic programming guide and replacement character strings occuring in the data that have high savings values. A look-up table and binary tree are constructed from the Huffman codes for use in compressing and decompressing the electronic programming guide, and a set-top box for use in the decompression operation is provided.
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申请公布号 |
CA2222293(A1) |
申请公布日期 |
1996.12.19 |
申请号 |
CA19962222293 |
申请日期 |
1996.05.30 |
申请人 |
TV GUIDE ON SCREEN |
发明人 |
LAZARUS, DAVID BERYL;ELLIS, MICHAEL DEAN |
分类号 |
H03M7/42;H04N5/445;H04N7/025;H04N7/08;H04N7/081;H04N7/16;(IPC1-7):H03M7/42;H04N7/26 |
主分类号 |
H03M7/42 |
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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