Video reception device, video transmission device, and video transmission system
    21.
    发明申请
    Video reception device, video transmission device, and video transmission system 审中-公开
    视频接收设备,视频传输设备和视频传输系统

    公开(公告)号:US20060168632A1

    公开(公告)日:2006-07-27

    申请号:US10515226

    申请日:2004-02-20

    IPC分类号: H04N7/173

    摘要: A video transmission system that achieves uninterrupted video transmission, even when there are large bit rate fluctuation due to receiving terminal movement and so forth, in a network such as a wireless network in which transmission bit rate fluctuations occur. In this system, when a video receiving apparatus (receiving terminal) 150 is moving, a video transmitting apparatus (transmitting terminal) 100 lowers the base layer bit rate of layered-coded data to the limit. When the base layer bit rate is lowered in this way, the bit rate of the lowest enhancement layer is raised and effects on the received image quality of other terminals due to lowering of the base layer are suppressed, or the lowest enhancement layer is divided finely and the adjustability to a bit rate under bit rate fluctuations is improved.

    摘要翻译: 即使在诸如发生传输比特率波动的无线网络的网络中,即使在由于接收终端移动等而导致比特率波动较大的情况下也能够实现不间断的视频传输的视频传输系统。 在该系统中,当视频接收装置(接收终端)150正在移动时,视频发送装置(发送终端)100将分层编码数据的基本层比特率降低到极限。 当以这种方式降低基本层比特率时,降低最低增强层的比特率,并抑制由于基底层的降低对其他终端的接收图像质量的影响,或者将最低增强层细分 并且提高了在比特率波动下对比特率的可调整性。

    Video coding method
    23.
    发明申请
    Video coding method 审中-公开
    视频编码方式

    公开(公告)号:US20050074177A1

    公开(公告)日:2005-04-07

    申请号:US10950913

    申请日:2004-09-28

    摘要: A video coding method enabling implementation of resolution scalability while improving the coding efficiency. In the method, a band dividing section 104 performs band division on a high-resolution original image to generate a middle-resolution image, horizontal component, vertical component and diagonal component. The horizontal component is subjected to the DCT processing in horizontal layer DCT section 124, and then subjected to the bit-plane VLC processing in horizontal layer bit-plane VLC section 126. The vertical component is subjected to the DCT processing in vertical layer DCT section 130, and then subjected to the bit-plane VLC processing in vertical layer bit-plane VLC section 132. The diagonal component is subjected to the DCT processing in diagonal layer DCT section 136, and then subjected to the bit-plane VLC processing in diagonal layer bit-plane VLC section 138. In scanning, a scanning order is determined in consideration of bias in the distribution of DCT coefficients for each band component.

    摘要翻译: 一种能够在提高编码效率的同时实现分辨率可缩放性的视频编码方法。 在该方法中,带分割部分104对高分辨率原始图像执行带分割以产生中分辨率图像,水平分量,垂直分量和对角分量。 水平分量在水平层DCT部分124中进行DCT处理,然后在水平层位平面VLC部分126中进行位平面VLC处理。垂直分量在垂直层DCT部分中进行DCT处理 130,然后在垂直层位平面VLC部分132中进行位平面VLC处理。对角分量在对角线DCT部分136中进行DCT处理,然后在对角线中进行位平面VLC处理 在扫描中,考虑到每个频带分量的DCT系数的分布中的偏差来确定扫描顺序。