Importance

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Abstract

The present invention relates generally to multicasting technology in an Internet broadcasting system and, more particularly, to a method and system for voting an optimal route in multicasting, which, when an abnormality, such as the delay or disconnection of a video stream, occurs during the reception of a predetermined or larger amount multimedia data which is multicasted by a main server, in stream form, set the specific one of a plurality of audio transmission routes, that has the highest transmission speed, as a video transmission route, and set the transmission route through a level-down, level-up, or level-shift operation depending on the latency values or threshold values of respective transmission routes, thus allowing a large size multimedia stream to be seamlessly and rapidly transmitted.In accordance with the present invention, it is possible to always prepare an optimal transmission route and stably and rapidly transmit a multimedia stream. Furthermore, when an abnormality occurs in the reception of a video stream, the specific one of a plurality of audio transmission routes, which has the highest transmission speed, is set as a video reception route, so that it is possible to continuously receive the video stream without delay or disconnection.

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First Claim