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1. 发明授权

US07216140B1 Efficient implementation of n-point DCT, n-point IDCT, SA-DCT and SA-IDCT algorithms 有权
标题翻译： n点DCT，n点IDCT，SA-DCT和SA-IDCT算法的有效实现
公开(公告)号：US07216140B1
公开(公告)日：2007-05-08
申请号：US09676556
申请日：2000-09-30
申请人： Yen-Kuang Chen , Nicholas H. Yu
发明人： Yen-Kuang Chen , Nicholas H. Yu
IPC分类号： G06F7/52
CPC分类号： G06F17/147
摘要： An efficient implementation of n-point discrete cosine transform, n-point inverse discrete cosine transform, shape adaptive discrete cosine transform and shape adaptive inverse discrete cosine transform algorithms for multimedia compression and decompression optimization. An n-point DCT function is represented by a first equation having an input matrix, an output matrix and a matrix of predetermined values. An n-point IDCT function is represented by a second equation having an input matrix, an output matrix and a matrix of predetermined values. The multiplication operations within the matrix of predetermined values are paired, thereby reducing processor instructions. SIMD operations, MMX operations, VLSI implementation, single processor implementation, and vector processing are used to perform the algorithms.
摘要翻译：用于多媒体压缩和解压缩优化的n点离散余弦变换，n点离散余弦变换，形状自适应离散余弦变换和形状自适应逆离散余弦变换算法的有效实现。 n点DCT函数由具有输入矩阵，输出矩阵和预定值的矩阵的第一等式表示。 n点IDCT函数由具有输入矩阵，输出矩阵和预定值的矩阵的第二方程表示。预定值的矩阵内的乘法运算配对，从而减少处理器指令。使用SIMD操作，MMX操作，VLSI实现，单处理器实现和向量处理来执行算法。

2. 发明授权

US06625212B1 Pixel padding procedure using SIMD operations or vector processing 有权
标题翻译：使用SIMD操作或向量处理的像素填充程序
公开(公告)号：US06625212B1
公开(公告)日：2003-09-23
申请号：US09608416
申请日：2000-06-30
申请人： Yen-Kuang Chen , Nicholas H. Yu
发明人： Yen-Kuang Chen , Nicholas H. Yu
IPC分类号： H04B166
CPC分类号： H04N19/20 , H04N19/563
摘要： A pixel padding procedure is disclosed. The padding procedure provides a method for filling pixels in a block in accordance with intensities of pixels in preceding and succeeding pixels of the same row or column. This padding procedure may include filling pixels with simultaneous logic operations; transposing blocks before and after horizontal padding; case detecting for simple or complex padding; simple pixel filling, where no pixels need to be averaged; and complex pixel filling, which contains pixels to be averaged. In one embodiment, this procedure may be performed in an MMX™ implementation for MPEG-4 repetitive padding.
摘要翻译：公开了像素填充程序。填充程序提供了根据相同行或列的前后像素中的像素强度来填充块中的像素的方法。该填充过程可以包括用同时的逻辑运算填充像素; 在水平填充之前和之后转置块; 用于简单或复杂填充的情况检测; 简单的像素填充，其中不需要像素平均; 和复杂像素填充，其中包含要平均的像素。在一个实施例中，该过程可以在用于MPEG-4重复填充的MMX TM实现中执行。

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