发明授权
- 专利标题: Temporal slice persistence method and apparatus for delivery of interactive program guide
- 专利标题(中): 时间片持久性方法和装置交付节目指南
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申请号: US09686739申请日: 2000-10-10
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公开(公告)号: US06754271B1公开(公告)日: 2004-06-22
- 发明人: Donald F. Gordon , Sadik Bayrakeri , Jeremy S Edmonds , John P. Comito
- 申请人: Donald F. Gordon , Sadik Bayrakeri , Jeremy S Edmonds , John P. Comito
- 主分类号: H04N712
- IPC分类号: H04N712
摘要:
Techniques to efficiently deliver interactive program guide (IPG) to a number of terminals. Each IPG page can be decomposed into a guide portion that is specific to each IPG page and a background portion that is common for all IPG pages. The background portion can be further decomposed into a time-varying video portion and other static portions. In one method for regenerating a selected IPG page, packets with a first PID for a first sequence of pictures having included therein one or more slices defined for at least a time-varying portion (e.g., the video portion) retrieved and decoded. Packets with a second PID for a second sequence of pictures having included therein one or more slices defined for at least a portion specific to the selected IPG page (e.g., the guide portion) are also retrieved and decoded. The second sequence can be coded with one I, P, or B picture for each GOP, and can be combined as and replaces an I, P, or B picture, respectively, in the first sequence or the last picture in the GOP. The second sequence can also be coded as a one-picture GOP that can replace a B-picture, or be inserted between pair of pictures, in the first sequence.
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