Invention Grant
- Patent Title: Methods in transmission and searching of video information
- Patent Title (中): 视频信息的传输和搜索方法
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Application No.: US12149219Application Date: 2008-04-29
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Publication No.: US07936815B2Publication Date: 2011-05-03
- Inventor: Harald Dankworth , Geirr Ivarsson Leistad
- Applicant: Harald Dankworth , Geirr Ivarsson Leistad
- Applicant Address: NL Amsterdam
- Assignee: Microsoft International Holdings B.V.
- Current Assignee: Microsoft International Holdings B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Merchant & Gould P.C.
- Priority: NO20010056 20010104
- Main IPC: H04B1/66
- IPC: H04B1/66

Abstract:
In a method for transmission of video information between HTTP servers and clients in a shared network resource, particularly Internet, the video information is stored as a video file consisting of packet-divided video streams compression-coded with average bit rates t(c) which cover the clients' expected channel bit rates s. Each packet and the video file are supplied with a header containing information for realizing a bandwidth-scalable video transmission over a suitable version of HTTP. During transmission switching between the video streams takes place on the basis pf an estimation of the channel bit rate s and the information in the packet header, such that the bit rate t(c) is adapted to the client's actual channel bit rate s. In a method for client-executed search and retrieval of video information in a shared network resource, particularly searching of a video frame Fx in a packet-divided video stream, the packets in a video stream are divipacket packet in each group. On basis of given search criteria and search-specific information in the packet headers the packet with the video five Fx is found, such that a pseudo-random search and retrieval are realized with the use of a suitable version of HTTP as transport protocol.
Public/Granted literature
- US20080209490A1 Methods in transmission and searching of video information Public/Granted day:2008-08-28
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