发明名称 |
ENCODING DEVICE AND METHOD, COMPOSITE DEVICE AND METHOD, AND TRANSMISSION SYSTEM |
摘要 |
Provided are an encoding device and method, a decoding device and method, and a transmission system capable of rapidly encoding an image. A maximum valid digit quantity calculation unit (63) calculates the maximum valid number of digits of a predetermined number w of quantization coefficients. A VLC encoding unit (64) outputs a code indicating the maximum valid number of digits according to the calculation result. According to the maximum valid number of digits, a valid digit extraction unit (65) extracts a valid digit of each quantization coefficient from the w quantization coefficients. According to the extracted valid digit, a VLC encoding unit (66) outputs a code indicating an absolute value of the w quantization coefficients. A sign extraction unit (67) extracts a sign indicating whether each of the quantization coefficients is positive or negative from the w quantization coefficients. A VLC encoding unit (68) outputs w codes indicating the sign. |
申请公布号 |
WO2007058296(A1) |
申请公布日期 |
2007.05.24 |
申请号 |
WO2006JP322953 |
申请日期 |
2006.11.17 |
申请人 |
SONY CORPORATION;FUKUHARA, TAKAHIRO;HOSAKA, KAZUHISA;ANDO, KATSUTOSHI |
发明人 |
FUKUHARA, TAKAHIRO;HOSAKA, KAZUHISA;ANDO, KATSUTOSHI |
分类号 |
H04N1/41;G06T9/00;H03M7/30;H03M7/40;H04N1/413;H04N19/00;H04N19/196;H04N19/436;H04N19/46;H04N19/51;H04N19/63;H04N19/70;H04N19/85 |
主分类号 |
H04N1/41 |
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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