| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a video sending device having an active system and a standby system, which can speedily be switched to the standby system when an abnormality occurs in the active system. <P>SOLUTION: In the video sending device having the active system A and at least one standby system, a digital video signal is distributed to the active system A and a standby system B, and an amount of video data of each video frame in a decoded output of the active system A is calculated by an video change detector 5a, and the active system is switched to the standby system B to output the video data when detecting that the amount of video data of each video frame is not changed. <P>COPYRIGHT: (C)2007,JPO&INPIT |
