发明授权
- 专利标题: Mechanism for transmitting elementary streams in a broadcast environment
- 专利标题(中): 在广播环境中传输基本流的机制
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申请号: US10917243申请日: 2004-08-12
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公开(公告)号: US07433946B2公开(公告)日: 2008-10-07
- 发明人: Guobin Shen , Shipeng Li , Hua Cai , Regis J. Crinon , Ze-wen Zhang , Guangping Gao , Hong-Hui Sun , Baogang Yao
- 申请人: Guobin Shen , Shipeng Li , Hua Cai , Regis J. Crinon , Ze-wen Zhang , Guangping Gao , Hong-Hui Sun , Baogang Yao
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 代理机构: Lee & Hayess, PLLC
- 主分类号: G06F15/173
- IPC分类号: G06F15/173 ; G06F15/16 ; G06F5/00
摘要:
The techniques and mechanisms described herein are directed at transmitting elementary streams in a broadcast environment. The mechanisms provide a buffer controller and packet scheduler that allow a media format to be transmitted through the broadcasting environment in a manner resulting in a low channel switch delay. A buffer-fullness indicator allows the operation with various types of decoders. A lower bound and an upper bound are calculated for each frame within the elementary stream. The lower bound corresponds to an earliest time for sending the frame without causing an overflow condition within a decoder buffer. The upper bound corresponds to a latest time for sending the frame without causing an underflow condition within the decoder buffer. A send time is then scheduled based on the lower bound and the upper bound that determines when a packet associated with the frame is transmitted over a channel in a broadcast environment.