| 摘要 |
PROBLEM TO BE SOLVED: To rapidly and smoothly perform the signal switching of a plurality of image input signals, and to give an additionally valued function to a projector. SOLUTION: This seamless video image switching device of a projector device which switches the plurality of video input signals 1, 2 to enable projection is provided with seamless video image setting circuits 11, 12 for setting smooth signal switchings without causing the disturbance or interruption of the image projected at the time of the signal switching, a switching timing signal circuit 13 for outputting a switching timing signal synchronized with the video image input signal according to the setting of the switching setting circuits 11, 12, and a synchronization switching circuit 15 for switching the video input signal according to the switching timing signal. COPYRIGHT: (C)2005,JPO&NCIPI
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