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1. 发明授权

US6020934A Motion estimation architecture for area and power reduction 失效
标题翻译：用于区域和功率降低的运动估计架构
公开(公告)号：US6020934A
公开(公告)日：2000-02-01
申请号：US46291
申请日：1998-03-23
申请人： James D. Greenfield , Barbara A. Hall , John A. Murdock , Agnes Y. Ngai , Stephen P. Pokrinchak
发明人： James D. Greenfield , Barbara A. Hall , John A. Murdock , Agnes Y. Ngai , Stephen P. Pokrinchak
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50 , H04N7/34
CPC分类号： H04N19/567 , H04N19/42 , H04N19/43 , H04N19/51 , H04N19/61
摘要： A method for compensating for reduced picture quality when combining a multi-chip encoding chipset into a single integrated semiconductor IC. The method includes additional functions provided on the single IC to compensate for the negative effects on picture quality produced as a result of rounding 8 bit luminance pixel data to 5 bits, where the luminance data values are supplied as input to the search function. The additional functions are collectively referred to as motion biasing and are applied to influence the choice of a "best match" motion type, which is well known in the art. The biasing is performed by the addition of a weight factor to a total difference result that is calculated by the search function. The biasing is applied only for the purpose of influencing the choice of a reference frame that is not necessarily the frame which produces an optimal motion vector, but rather will result in using fewer bits to encode macroblocks.
摘要翻译：一种用于在将多芯片编码芯片组合成单个集成半导体IC时补偿降低的图像质量的方法。该方法包括在单个IC上提供的附加功能，以补偿由于将8位亮度像素数据舍入到5位而产生的图像质量的负面影响，其中将亮度数据值作为输入提供给搜索功能。附加功能统称为运动偏移，并且被应用以影响本领域中公知的“最佳匹配”运动类型的选择。通过将加权因子加到通过搜索函数计算的总差值结果来执行偏置。偏置仅用于影响参考帧的选择，该参考帧不一定是产生最佳运动矢量的帧，而是将导致使用较少位来编码宏块。

2. 发明授权

US5978029A Real-time encoding of video sequence employing two encoders and statistical analysis 失效
标题翻译：使用两个编码器的视频序列的实时编码和统计分析
公开(公告)号：US5978029A
公开(公告)日：1999-11-02
申请号：US8281
申请日：1998-01-16
申请人： Charles E. Boice , Barbara A. Hall , John M. Kaczmarczyk , Agnes Yee Ngai , Stephen P. Pokrinchak
发明人： Charles E. Boice , Barbara A. Hall , John M. Kaczmarczyk , Agnes Yee Ngai , Stephen P. Pokrinchak
IPC分类号： H04N7/32 , G06T9/00 , H03M7/30 , H04N7/26 , H04N7/50 , H04N7/36
CPC分类号： H04N19/87 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/154 , H04N19/176 , H04N19/179 , H04N19/61 , H04N19/85 , H04N19/146 , H04N19/30
摘要： Method, system and computer program product are provided for adaptively encoding in hardware, software or a combination thereof a sequence of video frames in real-time. A first encoding subsystem analyzes the sequence of video frames to derive information on at least one characteristic thereof, such as motion statistics, non-motion statistics, scene change statistics, or scene fade statistics. The gathered information may be either an intraframe characteristic or an interframe characteristic. A control processor is coupled to the first encoding subsystem to automatically analyze the gathered information in real time and dynamically produce a set of control parameters. A second encoding subsystem, coupled to the control processor, then encodes each frame of the sequence of video frames employing the corresponding set of control parameters.
摘要翻译：提供方法，系统和计算机程序产品，用于在硬件，软件或其组合中自动编码一系列视频帧。第一编码子系统分析视频帧的序列以得到关于其至少一个特征的信息，例如运动统计，非运动统计，场景变化统计或场景渐变统计。所收集的信息可以是帧内特性或帧间特性。控制处理器耦合到第一编码子系统以实时自动分析所收集的信息，并且动态地产生一组控制参数。耦合到控制处理器的第二编码子系统然后使用相应的一组控制参数对视频帧序列的每个帧进行编码。

3. 发明授权

US06252905B1 Real-time evaluation of compressed picture quality within a digital video encoder 失效
标题翻译：数字视频编码器中压缩图像质量的实时评估
公开(公告)号：US06252905B1
公开(公告)日：2001-06-26
申请号：US09020904
申请日：1998-02-05
申请人： Stephen P. Pokrinchak , Charles J. Stein
发明人： Stephen P. Pokrinchak , Charles J. Stein
IPC分类号： H04B166
CPC分类号： G06T9/00
摘要： Method, system and computer program product are provided for real time evaluation of compressed picture quality, in hardware, software or a combination thereof, during encoding of a sequence of video data. A received video signal is encoded by quantizing the signal after frequency transformation to produce a quantized video signal which is automatically evaluated in real time for data loss. Loss statistics, representative of picture quality of the quantized video signal, are generated for comparison with, for example, a predefined threshold as a dynamic control over outputting of the quantized video signal to the encode pipeline. As an enhancement, multiple quantizers are employed in parallel, each using a different quantization scale to produce multiple different quantization signals. The multiple quantization signals are evaluated in real time for picture quality and an optimum signal is selected for forwarding within the encode pipeline.
摘要翻译：提供方法，系统和计算机程序产品，用于在视频数据序列的编码期间对硬件，软件或其组合的压缩图像质量进行实时评估。通过对频率变换后的信号进行量化，对接收到的视频信号进行编码，生成量化视频信号，实时自动评估数据丢失。产生代表量化视频信号的图像质量的丢失统计量，用于与例如预定义阈值进行比较，作为对量化视频信号输出到编码流水线的动态控制。作为增强，并行采用多个量化器，每个量化器使用不同的量化比例来产生多个不同的量化信号。对于图像质量，多个量化信号被实时评估，并且选择最佳信号以在编码流水线内转发。

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