公开(公告)号：US5995080A

公开(公告)日：1999-11-30

申请号：US668199

申请日：1996-06-21

申请人： Larry Louis Biro ,  Matthew Howard Reilly ,  Matthew James Adiletta ,  William R. Wheeler

发明人： Larry Louis Biro ,  Matthew Howard Reilly ,  Matthew James Adiletta ,  William R. Wheeler

IPC分类号： H04N7/26 ,  H04N7/36 ,  H04N7/46 ,  H04N7/50 ,  G09G5/04

CPC分类号： H04N19/577 ,  H04N19/126 ,  H04N19/14 ,  H04N19/176 ,  H04N19/177 ,  H04N19/42 ,  H04N19/51 ,  H04N19/61 ,  H04N19/146 ,  H04N19/152 ,  Y10S707/99942

摘要： An apparatus and method a method for performing two-pass real time video compression is provided. Tactical decisions such as encoding and quantization values are determined in software, whereas functional execution steps are performed in hardware. By appropriately apportioning the tasks between software and hardware, the benefits of each type of processing are exploited, while minimizing both hardware complexity and data transfer requirements. One key concept that allows the compression unit to operate in real time is that the architecture and pipelining both allow for B frames to be executed out of order. By buffering B frames, two-pass motion estimation techniques can be performed to tailor bit usage to the requirements of the frame, and thereby provide a more appealing output image.

摘要翻译： 提供了一种用于执行双程实时视频压缩的方法的装置和方法。 用软件确定诸如编码和量化值之类的战术决策，而在硬件中执行功能执行步骤。 通过适当地分配软件和硬件之间的任务，利用每种类型的处理的优点，同时最小化硬件复杂性和数据传输要求。 允许压缩单元实时操作的一个关键概念是架构和流水线均允许B帧被执行无序。 通过缓冲B帧，可以执行双遍运动估计技术，以根据帧的要求定制比特使用，从而提供更有吸引力的输出图像。