Invention Grant
US06584152B2 Computer system and process for capture, editing and playback of motion video compressed using interframe and intraframe techniques
有权
用于使用帧间和帧内技术捕获,编辑和播放运动视频压缩的计算机系统和过程
- Patent Title: Computer system and process for capture, editing and playback of motion video compressed using interframe and intraframe techniques
- Patent Title (中): 用于使用帧间和帧内技术捕获,编辑和播放运动视频压缩的计算机系统和过程
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Application No.: US09734276Application Date: 2000-12-11
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Publication No.: US06584152B2Publication Date: 2003-06-24
- Inventor: Michael Sporer , Katherine H. Cornog , Peter Zawojski , James Hamilton
- Applicant: Michael Sporer , Katherine H. Cornog , Peter Zawojski , James Hamilton
- Main IPC: H04B166
- IPC: H04B166

Abstract:
Random access to arbitrary fields of a video segment compressed using both interframe and intraframe techniques is enhanced by adding state information to the bitstream prior to each intraframe compressed image to allow each intraframe compressed image to be randomly accessed, by generating a field index that maps each temporal field to the offset in the compressed bitstream of the data used to decode the field, and by playing back segments using two or more alternatingly used decoders. The cut density may be improved by eliminating from the bitstream applied to each decoder any data corresponding to bidirectionally compressed images that would otherwise be used by the decoder to generate fields prior to the desired field.
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