发明申请
US20080107401A1 Performing Trick Play Functions in a Digital Video Recorder with Efficient Use of Resources 有权
在有效利用资源的数字录像机中进行特技播放功能

  • 专利标题: Performing Trick Play Functions in a Digital Video Recorder with Efficient Use of Resources
  • 专利标题(中): 在有效利用资源的数字录像机中进行特技播放功能
  • 申请号: US11928828
    申请日: 2007-10-30
  • 公开(公告)号: US20080107401A1
    公开(公告)日: 2008-05-08
  • 发明人: Eric Vannier
  • 申请人: Eric Vannier
  • 主分类号: H04N7/26
  • IPC分类号: H04N7/26
Performing Trick Play Functions in a Digital Video Recorder with Efficient Use of Resources
摘要:
Techniques for selecting a picture of a video program for display in accordance with a selected trick play mode of a DVR are described herein. Sometimes, when desired playback speed is faster than normal, a DVR is forced to select some pictures to play and some pictures to skip. Ideally, in order to preserve “smooth” viewing quality, the next picture to be displayed should be temporally close to the currently displayed picture. Since some pictures can take longer to decode than others, accounting for picture decoding costs helps ensure that the best picture can be selected for decoding given playback speed requirements. According to one embodiment of the invention, for each picture of a plurality of pictures in a video data stream, a DVR determines a decoding cost for that picture. Based on the determined costs, the DVR selects a particular picture. The DVR outputs the selected picture for display.
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