发明授权
- 专利标题: Methods and devices for source-coding and decoding of data involving symbol compression
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申请号: US15119365申请日: 2015-02-20
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公开(公告)号: US09729169B2公开(公告)日: 2017-08-08
- 发明人: Ossi Kalevo , Tuomas Karkkainen , Artur Huhtaniemi
- 申请人: GURULOGIC MICROSYSTEMS OY
- 申请人地址: FI
- 专利权人: GURULOGIC MICROSYSTEMS OY
- 当前专利权人: GURULOGIC MICROSYSTEMS OY
- 当前专利权人地址: FI
- 代理机构: Dentons US LLP
- 代理商 Eric L. Sophir
- 优先权: GB1403039.9 20140220
- 国际申请: PCT/EP2015/025008 WO 20150220
- 国际公布: WO2015/124324 WO 20150827
- 主分类号: H03M7/40
- IPC分类号: H03M7/40 ; H03M7/30 ; H04N19/91 ; H04N19/625 ; H03M7/42 ; H04N19/436 ; H04N19/44
摘要:
A method of encoding input data in an encoder to generate corresponding encoded data includes splitting and/or transforming the input data into data chunks, analyzing symbols present in the input data and compressing the symbols as a function of occurrence of the symbols in the data chunks; generating code tables, frequency tables, and/or length of code word tables for the symbols present in the data chunks; computing sets of indices relating the symbols in each data chunk and/or the compressed symbols to entries in the code tables, the frequency tables, and/or the length of code word tables; and assembling the sets of indices, together with the frequency tables, the code tables, and/or information indicative of such tables, for generating the encoded data. An encoder that utilizes the method, together with a corresponding decoder, wherein the encoder and the decoder in combination form a codec.
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