发明授权
- 专利标题: Control of video decoder for reverse playback operation
- 专利标题(中): 控制视频解码器进行反向播放操作
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申请号: US13471247申请日: 2012-05-14
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公开(公告)号: US09191681B2公开(公告)日: 2015-11-17
- 发明人: John Samuel Bushell
- 申请人: John Samuel Bushell
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Kenyon & Kenyon LLP
- 主分类号: H04N19/587
- IPC分类号: H04N19/587 ; H04N19/132 ; H04N19/159 ; H04N19/172 ; H04N19/179 ; H04N19/44 ; H04N19/61
摘要:
A video decoder includes a mode of operation for reverse playback that includes dividing a sequence of coded video data into groups of pictures (GOPs) and further subdividing the groups of pictures into a plurality of spans. Each span is processed in reverse coding order by decoding the first key frame and any reference frames that precede the currently processed span in coding order, selecting a plurality of frames from the currently processed span for decode and display and further selecting for decode but not display any reference frames from the currently processed span that were omitted by the first selection. The method accommodates control parameters that define the number of spans selected from each GOP and the number of frames selected from each span for decoded and display.
公开/授权文献
- US20120288254A1 CONTROL OF VIDEO DECODER FOR REVERSE PLAYBACK OPERATION 公开/授权日:2012-11-15
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