发明授权
US07706447B2 Switching between bit-streams in video transmission 有权
在视频传输中切换位流

  • 专利标题: Switching between bit-streams in video transmission
  • 专利标题(中): 在视频传输中切换位流
  • 申请号: US10250838
    申请日: 2002-01-03
  • 公开(公告)号: US07706447B2
    公开(公告)日: 2010-04-27
  • 发明人: Marta KarczewiczRagip Kurceren
  • 申请人: Marta KarczewiczRagip Kurceren
  • 申请人地址: FI Espoo
  • 专利权人: Nokia Corporation
  • 当前专利权人: Nokia Corporation
  • 当前专利权人地址: FI Espoo
  • 国际申请: PCT/FI02/00004 WO 20020103
  • 国际公布: WO02/054776 WO 20020711
  • 主分类号: H04N7/12
  • IPC分类号: H04N7/12
Switching between bit-streams in video transmission
摘要:
A method for transmitting video information is shown, in which at least a first bit-stream (510) and a second bit-stream are formed. The first bit-stream (510) includes a video frame, and the second bit-stream (520) includes a predictive video frame (524). Different encoding parameters are used with encoding of the frames of the first bit-stream (510) and the second bit-stream (520). A frame of the first bit-stream (510) is transmitted, and the transmission is switched over from the first (510) to the second bit-stream (520) during which a secondary switching frame (550) is transmitted encoded using the encoding parameters of the second bit-stream (520) and at least one reference frame from the first bit-stream (510). The secondary switching frame (550) is used as a reference frame in the reconstruction of the predictive video frame (524) of the second set of video frames.
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