发明授权
- 专利标题： Object-based audio-visual terminal and bitstream structure
- 专利标题（中）： 基于对象的视听终端和比特流结构
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申请号： US09367433申请日： 1998-02-13
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公开(公告)号： US07199836B1公开(公告)日： 2007-04-03
- 发明人: Alexandros Eleftheriadis , Hari Kalva
- 申请人： Alexandros Eleftheriadis , Hari Kalva
- 申请人地址： US NY New York
- 专利权人： The Trustees of Columbia University in the City of New York
- 当前专利权人： The Trustees of Columbia University in the City of New York
- 当前专利权人地址： US NY New York
- 代理机构： Baker Botts LLP
- 代理商 Manu J. Tejwani
- 国际申请： PCT/US98/02668 WO 19980213
- 国际公布： WO98/36559 WO 19980820
- 主分类号： H04N5/262
- IPC分类号： H04N5/262
摘要：
As information to be processed at an object-based video or audio-visual (AV) terminal, an object-oriented bitstream includes objects, composition information, and scene demarcation information. Such bitstream structure allows on-line editing, e.g. cut and paste, insertion/deletion, grouping, and special effects. In the interest of ease of editing, AV objects and their composition information are transmitted or accessed on separate logical channels (LCs). Objects which have a lifetime in the decoder beyond their initial presentation time are cached for reuse until a selected expiration time. The system includes a de-multiplexer (1), a controller (2) which controls the operation of the AV terminal, input buffers (3), AV objects decoders (4), buffers (4′) for decoded data, a composer (5), a display (6), and an object cache (7).
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