VIDEO DISTRIBUTION APPARATUS, DISTRIBUTED VIDEO IMAGE SWITCHING METHOD, DISTRIBUTED VIDEO IMAGE SWITCHING PROGRAM, AND RECORDING MEDIUM WITH DISTRIBUTED VIDEO IMAGE SWITCHING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a video distribution apparatus for switching video images to be distributed to terminals at each point without switching sessions in a multi-point connection such as video conference.;SOLUTION: The video distribution apparatus 10 allows a switching device 12 to sort video signals in an input buffer 11 which have been received from terminals 20 at each point, and transfers the sorted video signals to an output buffer 13 for transmission to the terminals 20 at each point. Upon receiving a video image switching request from a user operation processing apparatus 30, the switching device 12 changes only a distribution target video image to be distributed to a data channel without changing session information in accordance with the video image switching request. In this case, the switching device 12 detects the end point frame of the video image to be distributed before switching and the start point frame of the video image to be distributed after switching, interposes a stored video signal previously stored in its inside between a video signal before video switching and a video signal after video switching, and delivers it to the output buffer 13.;COPYRIGHT: (C)2009,JPO&INPIT