A 400 MPixel/s IDCT for HDTV by multibit coding and group symmetry
A 400 MPixel/s IDCT for HDTV by multibit coding and group symmetry
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DOI：
10.1109/isscc.1997.585380
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
Jun Rim Choi;Won Jun Hur;Kyoung Keun Lee;Ae Shin Kim
中科院分区：
文献类型：
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作者：
Jun Rim Choi;Won Jun Hur;Kyoung Keun Lee;Ae Shin Kim
该逆离散余弦变换（IDCT）核心为HDTV信号提供400 MPixel/s的运动图像解压缩。IDCT利用了矩阵乘法系数的群对称性和基2多比特编码，减少了乘法次数。它还具有正交存储器转置解压缩的像素数据。IDCT集成了237 k个晶体管，在3.3V时功耗为0.9W，在0.6 /spl mu/mCMOS工艺中占用24 mm/sup 2/。
This inverse discrete cosine transform (IDCT) core provides motion-picture decompression at 400 MPixel/s for HDTV signals. The IDCT exploits the radix-two multibit coding and group symmetry of the matrix multiplication coefficients, to reduce the number of multiplications. It also features orthogonal memory to transpose the decompressed pixel data. The IDCT integrates 237k transistors, consumes 0.9 W at 3.3 V, and occupies 24 mm/sup 2/ in 0.6 /spl mu/m CMOS technology.