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    • 3. 发明授权
    • Method and apparatus to determine prediction modes to achieve fast video encoding
    • 确定预测模式以实现快速视频编码的方法和装置
    • US08467447B2
    • 2013-06-18
    • US10840403
    • 2004-05-07
    • Krishna C. RatakondaAshish Jagmohan
    • Krishna C. RatakondaAshish Jagmohan
    • H04N7/12
    • H04N19/11H04N19/119H04N19/136H04N19/14H04N19/176H04N19/186H04N19/48H04N19/61
    • An improvement to a predictive video encoding method or apparatus that includes selecting a mode class within which to choose an encoding algorithm to encode individual blocks of video information. Rather than implementing each algorithm in each mode class to ascertain an acceptable compression, the improvement eliminates searching through a class of encoding modes based simply on heuristics. The method comprises obtaining statistical information related to previous blocks of encoded video information, determining a mode class within which to chose a particular encoding algorithm based on the statistical information (e.g., heuristics) gathered, choosing an algorithm within the selected mode class using conventional techniques, and encoding the video information according to the chosen algorithm. Statistical information may include quantization parameters, prior encoding decisions, intensity or frequency values, or Hadamard transform coefficients of previously encoded macroblocks. Encoding complexity in the coder is reduced since one class of encoding modes is eliminated.
    • 一种预测性视频编码方法或装置的改进,包括选择在其中选择编码算法来对各个视频信息块进行编码的模式类别。 不是在每个模式类中实现每个算法以确定可接受的压缩,而是改进消除了仅仅通过启发式来搜索一类编码模式。 该方法包括获得与先前编码视频信息块相关的统计信息,基于收集的统计信息(例如,启发式)确定选择特定编码算法的模式类别,使用常规技术选择所选模式类别内的算法 ,并根据所选择的算法对视频信息进行编码。 统计信息可以包括量化参数,先前编码决定,强度或频率值,或先前编码的宏块的Hadamard变换系数。 由于消除了一类编码模式,因此编码器中的编码复杂度降低。
    • 4. 发明授权
    • Method and system for the error resilient transmission of predictively encoded signals
    • 用于预测编码信号的错误传播的方法和系统
    • US07305031B2
    • 2007-12-04
    • US10767596
    • 2004-01-29
    • Krishna C. RatakondaAshish Jagmohan
    • Krishna C. RatakondaAshish Jagmohan
    • H04N7/12H04N11/02
    • H04N19/39H04N19/37
    • A system for the introduction of controlled correlation among multiple redundant representations of predictively encoded signals while avoiding predictive mismatch at a receiver when any given sub-set of the multiple representations is received. The system embodies a signal encoder and decoder. The decoder can comprise at least two signal adders for respectively receiving coefficient values and adding at least one predictive value transform to the coefficient value in order to generate and transmit a second set of coefficient values. The second set of coefficient values is subsequently received by a decoder means, wherein the decoder means transforms the received coefficient values and transmits the resultant coefficient values to a signal adder. Upon reception of the transformed coefficient values, the signal adder generates a third set of coefficient values; the third set of coefficients being used to reconstruct an approximate version of an encoded signal.
    • 一种用于在预测编码信号的多个冗余表示之间引入受控相关性的系统,同时在接收到多个表示的任何给定子集时避免接收机处的预测失配。 该系统体现了信号编码器和解码器。 解码器可以包括用于分别接收系数值的至少两个信号加法器,并且将至少一个预测值变换加到系数值,以便产生和发送第二组系数值。 第二组系数值随后由解码器装置接收,其中解码器装置变换接收到的系数值,并将所得到的系数值发送到信号加法器。 在接收到变换的系数值时,信号加法器产生第三组系数值; 第三组系数用于重建编码信号的近似版本。
    • 5. 发明授权
    • Method and system for the error resilient transmission of predictively encoded signals
    • 用于预测编码信号的错误传播的方法和系统
    • US07433405B2
    • 2008-10-07
    • US11932143
    • 2007-10-31
    • Krishna C. RatakondaAshish Jagmohan
    • Krishna C. RatakondaAshish Jagmohan
    • H04B1/66H04N7/12H04N11/02
    • H04N19/39H04N19/37
    • A system for the introduction of controlled correlation among multiple redundant representations of predictively encoded signals while avoiding predictive mismatch at a receiver when any given sub-set of the multiple representations is received. The system embodies a signal encoder and decoder. The decoder can comprise at least two signal adders for respectively receiving coefficient values and adding at least one predictive value transform to the coefficient value in order to generate and transmit a second set of coefficient values. The second set of coefficient values is subsequently received by a decoder means, wherein the decoder means transforms the received coefficient values and transmits the resultant coefficient values to a signal adder. Upon reception of the transformed coefficient values, the signal adder generates a third set of coefficient values; the third set of coefficients being used to reconstruct an approximate version of an encoded signal.
    • 一种用于在预测编码信号的多个冗余表示之间引入受控相关性的系统,同时在接收到多个表示的任何给定子集时避免接收机处的预测失配。 该系统体现了信号编码器和解码器。 解码器可以包括用于分别接收系数值的至少两个信号加法器,并且将至少一个预测值变换加到系数值,以便产生和发送第二组系数值。 第二组系数值随后由解码器装置接收,其中解码器装置变换接收到的系数值,并将所得到的系数值发送到信号加法器。 在接收到变换的系数值时,信号加法器产生第三组系数值; 第三组系数用于重建编码信号的近似版本。
    • 6. 发明申请
    • METHOD AND SYSTEM FOR THE ERROR RESILIENT TRANSMISSION OF PREDICTIVELY ENCODED SIGNALS
    • 用于预测编码信号的错误响应传输的方法和系统
    • US20080117964A1
    • 2008-05-22
    • US11932143
    • 2007-10-31
    • Krishna C. RatakondaAshish Jagmohan
    • Krishna C. RatakondaAshish Jagmohan
    • H04N7/12H04N11/02
    • H04N19/39H04N19/37
    • A system for the introduction of controlled correlation among multiple redundant representations of predictively encoded signals while avoiding predictive mismatch at a receiver when any given sub-set of the multiple representations is received. The system embodies a signal encoder and decoder. The decoder can comprise at least two signal adders for respectively receiving coefficient values and adding at least one predictive value transform to the coefficient value in order to generate and transmit a second set of coefficient values. The second set of coefficient values is subsequently received by a decoder means, wherein the decoder means transforms the received coefficient values and transmits the resultant coefficient values to a signal adder. Upon reception of the transformed coefficient values, the signal adder generates a third set of coefficient values; the third set of coefficients being used to reconstruct an approximate version of an encoded signal.
    • 一种用于在预测编码信号的多个冗余表示之间引入受控相关性的系统,同时在接收到多个表示的任何给定子集时避免接收机处的预测失配。 该系统体现了信号编码器和解码器。 解码器可以包括用于分别接收系数值的至少两个信号加法器,并且将至少一个预测值变换加到系数值,以便产生和发送第二组系数值。 第二组系数值随后由解码器装置接收,其中解码器装置变换接收到的系数值,并将所得到的系数值发送到信号加法器。 在接收到变换的系数值时,信号加法器产生第三组系数值; 第三组系数用于重建编码信号的近似版本。
    • 10. 发明授权
    • Method and apparatus for run-time statistics dependent program execution using source-coding
    • 使用源代码的运行时统计依赖程序执行的方法和装置
    • US08341612B2
    • 2012-12-25
    • US11749295
    • 2007-05-16
    • Dake HeAshish JagmohanJian LouLigang Lu
    • Dake HeAshish JagmohanJian LouLigang Lu
    • G06F9/455G06F17/50G06F9/45
    • G06F9/30G06F8/4441G06F9/45525
    • Disclosed are a method and system for optimized, dynamic data-dependent program execution. The disclosed system comprises a statistics computer which computes statistics of the incoming data at the current time instant, where the said statistics include the probability distribution of the incoming data, the probability distribution over program modules induced by the incoming data, the probability distribution induced over program outputs by the incoming data, and the time-complexity of each program module for the incoming data, wherein the said statistics are computed on as a function of current and past data, and previously computed statistics; a plurality of alternative execution path orders designed prior to run-time by the use of an appropriate source code; a source code selector which selects one of the execution path orders as a function of the statistics computed by the statistics computer; a complexity measurement which measures the time-complexity of the currently selected execution path-order.
    • 公开了一种用于优化的动态数据相关程序执行的方法和系统。 所公开的系统包括统计计算机,其计算当前时刻的输入数据的统计量,其中所述统计包括输入数据的概率分布,由输入数据引起的程序模块上的概率分布,所引入的概率分布 输入数据的程序输出和输入数据的每个程序模块的时间 - 复杂度,其中根据当前和过去数据以及先前计算的统计量来计算所述统计; 通过使用适当的源代码在运行时间之前设计的多个替代执行路径命令; 源代码选择器,其根据由统计计算机计算出的统计量的函数选择执行路径顺序之一; 测量当前选择的执行路径顺序的时间 - 复杂度的复杂度测量。