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    • 1. 发明申请
    • PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION
    • 具有低功率参考图像转换的预测视频编码器
    • US20130329799A1
    • 2013-12-12
    • US13755928
    • 2013-01-31
    • Yao-Chung LinXiaosong ZhouHsi-Jung WuDouglas Scott PriceChris Y. ChungDazhong Zhang
    • Yao-Chung LinXiaosong ZhouHsi-Jung WuDouglas Scott PriceChris Y. ChungDazhong Zhang
    • H04N7/26
    • H04N19/51H04N19/503
    • Video coders may perform perspective transformation of reference frames during coding in a manner that conserves processing resources. When a new input frame is available for coding, a camera position for the input frame may be estimated. A video coder may search for reference pictures having similar camera positions as the position of the input frame and, for each reference picture identified, the video coder may perform a prediction search to identify a reference picture that is the best prediction match for the input frame. Once the video coder identifies a reference picture to serve as a prediction source for the input frame, the video coder may derive a transform to match the reference frame data to the input frame data and may transform the reference picture accordingly. The video coder may code the input frame using the transformed reference picture as a prediction reference and may transmit coded frame data and the camera position of the input frame to a decoder. Thus, the video coder may perform derivation and execution of transforms on a limited basis which conserves system resources.
    • 视频编码器可以在编码期间以保存处理资源的方式执行参考帧的透视变换。 当新的输入帧可用于编码时,可以估计用于输入帧的摄像机位置。 视频编码器可以搜索具有与输入帧的位置相似的相机位置的参考图像,并且对于识别的每个参考图像,视频编码器可以执行预测搜索以识别作为输入帧的最佳预测匹配的参考图像 。 一旦视频编码器识别用作输入帧的预测源的参考图像,则视频编码器可以导出将参考帧数据与输入帧数据相匹配的变换,并且可以相应地变换参考图像。 视频编码器可以使用变换的参考图片作为预测参考来对输入帧进行编码,并且可以将编码的帧数据和输入帧的摄像机位置发送到解码器。 因此,视频编码器可以在有限的基础上进行变换的推导和执行,从而节省系统资源。
    • 3. 发明授权
    • Adaptive configuration of reference frame buffer based on camera and background motion
    • 基于相机和背景运动的参考帧缓冲器的自适应配置
    • US09232233B2
    • 2016-01-05
    • US13175143
    • 2011-07-01
    • Xiaosong ZhouHsi-Jung WuYao-Chung Lin
    • Xiaosong ZhouHsi-Jung WuYao-Chung Lin
    • H04N7/32H04N19/58H04N19/196H04N19/105H04N19/139H04N19/172H04N19/46H04N19/61H04N19/109
    • H04N19/58H04N19/105H04N19/109H04N19/139H04N19/172H04N19/197H04N19/46H04N19/61
    • In a video coding/decoding system, reference picture caches in a video coder and decoder may be partitioned dynamically based on camera and background motion can lead to improved coding efficiency and coding quality. When a camera is fixed and therefore exhibits low motion, a system may allocate larger portions of the reference picture cache to storage of long term reference frames. In this case, foreground elements of an image (for example, a person) may move in front of a relatively fixed background. Increasing the number of long term reference frames can increase the chances that, no matter where the foreground elements are within a frame currently being coded, the reference picture cache will contain at least one frame that provides an adequate prediction match to background elements within the new frame. Thus the background elements uncovered in the current frame can be coded at high quality with a low number of bits. When a camera exhibits high motion, the system may allocate larger portions of the reference picture cache to storage of short term reference frames.
    • 在视频编码/解码系统中,视频编码器和解码器中的参考图像高速缓存可以基于相机进行动态分割,并且背景运动可以提高编码效率和编码质量。 当照相机固定并因此表现出低运动时,系统可以将较大部分的参考图像高速缓存分配给长期参考帧的存储。 在这种情况下,图像的前景元素(例如,人)可以在相对固定的背景之前移动。 增加长期参考帧的数量可以增加机会,无论前景元素在当前正被编码的帧内的何处,参考图像高速缓存将包含至少一个帧,其提供与新的背景元素内的足够的预测匹配 帧。 因此,当前帧中未覆盖的背景元素可以以低位数的高质量被编码。 当相机呈现高运动时,系统可以将较大部分的参考图像高速缓存分配给短期参考帧的存储。
    • 4. 发明申请
    • ADAPTIVE CONFIGURATION OF REFERENCE FRAME BUFFER BASED ON CAMERA AND BACKGROUND MOTION
    • 基于相机和背景运动的参考框架缓冲器的自适应配置
    • US20130003845A1
    • 2013-01-03
    • US13175143
    • 2011-07-01
    • Xiaosong ZhouHsi-Jung WuYao-Chung Lin
    • Xiaosong ZhouHsi-Jung WuYao-Chung Lin
    • H04N7/32
    • H04N19/58H04N19/105H04N19/109H04N19/139H04N19/172H04N19/197H04N19/46H04N19/61
    • In a video coding/decoding system, reference picture caches in a video coder and decoder may be partitioned dynamically based on camera and background motion can lead to improved coding efficiency and coding quality. When a camera is fixed and therefore exhibits low motion, a system may allocate larger portions of the reference picture cache to storage of long term reference frames. In this case, foreground elements of an image (for example, a person) may move in front of a relatively fixed background. Increasing the number of long term reference frames can increase the chances that, no matter where the foreground elements are within a frame currently being coded, the reference picture cache will contain at least one frame that provides an adequate prediction match to background elements within the new frame. Thus the background elements uncovered in the current frame can be coded at high quality with a low number of bits. When a camera exhibits high motion, the system may allocate larger portions of the reference picture cache to storage of short term reference frames.
    • 在视频编码/解码系统中,视频编码器和解码器中的参考图像高速缓存可以基于相机进行动态分割,并且背景运动可以提高编码效率和编码质量。 当照相机固定并因此表现出低运动时,系统可以将较大部分的参考图像高速缓存分配给长期参考帧的存储。 在这种情况下,图像的前景元素(例如,人)可以在相对固定的背景之前移动。 增加长期参考帧的数量可以增加机会,无论前景元素在当前正被编码的帧内的何处,参考图像高速缓存将包含至少一个帧,其提供与新的背景元素内的足够的预测匹配 帧。 因此,当前帧中未覆盖的背景元素可以以低位数的高质量被编码。 当相机呈现高运动时,系统可以将较大部分的参考图像高速缓存分配给短期参考帧的存储。
    • 7. 发明申请
    • VISUALLY MASKED METRIC FOR PIXEL BLOCK SIMILARITY
    • 用于像素块的可视化掩模公差
    • US20120207212A1
    • 2012-08-16
    • US13075282
    • 2011-03-30
    • Yao-Chung LinFeng YiXiaosong ZhouHsi-Jung Wu
    • Yao-Chung LinFeng YiXiaosong ZhouHsi-Jung Wu
    • H04N7/26
    • H04N19/85H04N19/132H04N19/14H04N19/154H04N19/176H04N19/61
    • Selecting a coding mode for coding video data by measuring a distortion sensitivity threshold for a pixel block, calculating a distortion threshold representative of the maximum distortion that may be effectively masked by the brightness and texture of the pixel block, estimating the distortion induced by coding the pixel block according to skip mode and coding the source pixel block with a predictive coding technique if the estimated distortion value exceeds the distortion threshold. The distortion sensitivity threshold may include, for example, a brightness value or a texture value. The contrast between the pixel block and the surrounding pixel blocks may also be considered such that if the contrast exceeds a contrast threshold calculated based on the measurement of brightness and texture, the source pixel block may be coded with a predictive coding technique even if the estimated distortion value does not exceed the distortion threshold.
    • 通过测量像素块的失真灵敏度阈值来选择用于编码视频数据的编码模式,计算代表由像素块的亮度和纹理有效地屏蔽的最大失真的失真阈值,估计由编码 像素块,并且如果估计的失真值超过失真阈值,则用预测编码技术对源像素块进行编码。 失真灵敏度阈值可以包括例如亮度值或纹理值。 还可以考虑像素块和周围像素块之间的对比度,使得如果对比度超过基于亮度和纹理的测量计算的对比阈值,则可以用预测编码技术对源像素块进行编码,即使估计 失真值不超过失真阈值。
    • 9. 发明授权
    • Transmission device capable of cooling a handheld electronic device
    • 能够冷却手持电子设备的传输设备
    • US07301766B2
    • 2007-11-27
    • US11160979
    • 2005-07-19
    • Yi-Chang HuangYao-Chung Lin
    • Yi-Chang HuangYao-Chung Lin
    • H05K7/20
    • G06F1/203
    • A transmission device of a handheld electronic device including a housing having an inlet and an outlet, a fan installed within the housing for generating airflow from the inlet to the outlet and a guide tube installed on the housing having a first opening and a second opening, the first opening is located at the outlet side, the second opening is coupled to an opening of the handheld electronic device in a detachable manner to allow airflow generated by the fan into the handheld electronic device, the guide tube can improve cooling effect of the transmission device and the transmission device is capable of cooling the handheld electronic device to solve the heating problem while the handheld electronic device is being utilized.
    • 一种手持电子设备的传输装置,包括具有入口和出口的壳体,安装在壳体内用于产生从入口到出口的气流的风扇和安装在壳体上的引导管,其具有第一开口和第二开口, 第一开口位于出口侧,第二开口以可拆卸的方式联接到手持式电子装置的开口,以便将由风扇产生的气流带入手持式电子装置,导管可改善传动装置的冷却效果 设备和传输设备能够冷却手持电子设备以解决在使用手持电子设备时的加热问题。