发明名称 |
CODING APPARATUS AND METHOD, DECODING APPARATUS AND METHOD, RECORDING MEDIUM, AND PROGRAM |
摘要 |
PROBLEM TO BE SOLVED: To produce coded data having high compression ratio and high error robustness. SOLUTION: A preliminary coefficient D arithmetic section 56 supplies lower-order 4-bits of a DR calculated by a DR arithmetic section 51 to an embedding arithmetic section 57 as a preliminary coefficient D. A preliminary coefficient A arithmetic section 58 supplies lower-order 4-bits of an AVE calculated by an average value arithmetic section 52 to an embedding arithmetic section 59 as a preliminary coefficient A. The embedding arithmetic section 57 generates a code Y, on the basis of MSB side 4 bits of a VQ code supplied from a VQ code decision section 55 and information in 4 bits comprising the preliminary coefficient D, and supplies the code Y to a composite section 102. The embedding arithmetic section 59 generates a code X on the basis of LSB side 4 bits of the VQ code supplied from the VQ code decision section 55 and information in 4 bits comprising the preliminary coefficient A, and supplies the code X to the composite section 102. The composite section 102 composites the codes X, Y with the VQ code and provides an output of the result as VQ coded data. The coding apparatus or the like is applicable to coding communication. COPYRIGHT: (C)2005,JPO&NCIPI
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申请公布号 |
JP2005150811(A) |
申请公布日期 |
2005.06.09 |
申请号 |
JP20030381064 |
申请日期 |
2003.11.11 |
申请人 |
SONY CORP |
发明人 |
FUJIMORI YASUHIRO;KONDO TETSUJIRO;HIRAIZUMI HIROSHI;SAKAGAMI RYUHEI |
分类号 |
H04N1/415;H03M7/30;(IPC1-7):H03M7/30 |
主分类号 |
H04N1/415 |
代理机构 |
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