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    • 11. 发明授权
    • Method of real time optimizing multimedia packet transmission rate
    • 实时优化多媒体分组传输速率的方法
    • US07620062B2
    • 2009-11-17
    • US10726440
    • 2003-12-02
    • Osamu Kobayashi
    • Osamu Kobayashi
    • H04J3/17
    • G06F3/14G09G5/006G09G2370/04H04L1/0002H04L5/1415H04L5/1446H04L25/4904H04N11/042Y02D50/10
    • A method and apparatus of optimizing transmission (both real time and continuous) of a number of multimedia data packets between a multimedia source device and a multimedia display device is disclosed. In the described embodiment, the multimedia source device and the display device are coupled by way of a unidirectional main link arranged to carry the multimedia data packets from the multimedia source device and the multimedia display device and a bi-directional auxiliary channel arranged to transfer information between the multimedia source device and the multimedia display device. The method can be carried out by following at least the following operations. Providing a test pattern by the multimedia source device on the main link, determining a transmission quality factor of the main link based upon the test pattern, and optimizing the transmission of the multimedia data packets based upon the transmission quality factor.
    • 公开了一种在多媒体源设备和多媒体显示设备之间优化多个多媒体数据分组的传输(包括实时和连续的)的方法和装置。 在所描述的实施例中,多媒体源设备和显示设备通过布置成承载来自多媒体源设备和多媒体显示设备的多媒体数据分组的单向主链路和布置成传送信息的双向辅助信道 在多媒体源设备和多媒体显示设备之间。 该方法可以通过以下操作进行至少以下操作。 通过主链路上的多媒体源设备提供测试模式,基于测试模式确定主链路的传输质量因子,并且基于传输质量因子优化多媒体数据分组的传输。
    • 17. 发明授权
    • Motion compensating apparatus, moving image coding apparatus and method
    • 运动补偿装置,运动图像编码装置及方法
    • US07075989B2
    • 2006-07-11
    • US10837704
    • 2004-05-04
    • Tokumichi MurakamiHideo OhiraHirofumi NishikawaKenichi AsanoYoshihisa YamadaShunichi SekiguchiKohtaro Asai
    • Tokumichi MurakamiHideo OhiraHirofumi NishikawaKenichi AsanoYoshihisa YamadaShunichi SekiguchiKohtaro Asai
    • H04N7/12
    • H04N11/042H04N19/51H04N19/517H04N19/567
    • The present invention provides a motion compensating apparatus which is capable of enhancing the overall coding efficiency by taking the amount of coded information used to code a motion vector as well as the sum of difference absolute values of estimated differences into consideration in order to determine an optimal vector. The motion compensating apparatus includes: a motion compensation processing unit for outputting a motion vector between an input image and a reference image, and an estimated image which is extracted from the reference image in accordance with the motion vector; a unit for calculating the sum of difference absolute values, as a distortion amount calculating unit, to obtain a distortion amount between the input image and the estimated image; a vector value coding unit for receiving the motion vector to code the motion vector thus inputted thereto to output a vector coded amount; and an optimal vector determining unit for receiving the motion vector, the distortion amount and the vector coded amount to obtain, for all of a plurality of motion vectors to be evaluated, an evaluation function calculated from the distortion amount and the vector coded amount to output as an optimal vector the motion vector in which the evaluation function exhibits a minimum value.
    • 本发明提供一种运动补偿装置,其能够通过考虑用于编码运动矢量的编码信息的量以及估计差的绝对值之和来提高整体编码效率,以便确定最优 向量。 运动补偿装置包括:运动补偿处理单元,用于输出输入图像和参考图像之间的运动矢量,以及根据运动矢量从参考图像中提取的估计图像; 用于计算差分绝对值之和作为失真量计算单元获得输入图像与估计图像之间的失真量的单元; 矢量值编码单元,用于接收运动矢量以对输入的运动矢量进行编码,以输出矢量编码量; 以及最佳向量确定单元,用于接收所述运动矢量,所述失真量和矢量编码量,以针对要评估的多个运动矢量的全部获得从所述失真量和所述矢量编码量计算出的评估函数以输出 作为评估函数呈现最小值的运动矢量的最佳向量。
    • 18. 发明申请
    • Video coding with residual color conversion using reversible YCoCg
    • 使用可逆YCoCg的残留色彩转换的视频编码
    • US20050259730A1
    • 2005-11-24
    • US10951929
    • 2004-09-27
    • Shijun Sun
    • Shijun Sun
    • H04N7/12H04N7/26H04N7/50H04N11/04
    • H04N11/042H04N19/12H04N19/124H04N19/147H04N19/176H04N19/186H04N19/61
    • A video coding algorithm supports both lossy and lossless coding of video while maintaining high color fidelity and coding efficiency using an in-loop, reversible color transform. Accordingly, a method is provided to encode video data and decode the generated bitstream. The method includes generating a prediction-error signal by performing intra/inter-frame prediction on a plurality of video frames; generating a color-transformed, prediction-error signal by performing a reversible color-space transform on the prediction-error signal; and forming a bitstream based on the color-transformed prediction-error signal. The method may further include generating a color-space transformed error residual based on a bitstream; generating an error residual by performing a reversible color-space transform on the color-space transformed error residual; and generating a video frame based on the error residual.
    • 视频编码算法支持视频的有损和无损编码,同时使用循环可逆的颜色变换保持高色彩保真度和编码效率。 因此,提供了一种对视频数据进行编码和解码生成的比特流的方法。 该方法包括通过对多个视频帧执行帧内/帧间预测来产生预测误差信号; 通过对所述预测误差信号执行可逆的颜色空间变换来生成颜色变换的预测误差信号; 以及基于所述颜色变换预测误差信号形成比特流。 该方法还可以包括:基于比特流生成颜色空间变换的误差残差; 通过对颜色空间变换的误差残差执行可逆的颜色空间变换来产生误差残差; 以及基于所述误差残差生成视频帧。