Patent ID: 8687116

Claim:
A video output device that performs time-sharing output of a plurality of video streams, the video output device comprising: an operation signal reception unit operable to receive operation signals each instructing to start or terminate a predetermined operation; a video output unit operable, (i) in an operation mode, to alternately output first image sets each composed of two or more of first images constituting a first video stream and second image sets each composed of two or more images constituting a second video stream, the operation mode starting with reception of an operation signal instructing to start the predetermined operation and ending with reception of an operation signal instructing to terminate the predetermined operation, and (ii) in a normal mode that is other than the operation mode, to output images each generated based on any of the first images, without outputting the second images; and a synchronizing signal transmission unit operable, in the operation mode, to transmit a synchronizing signal indicating a timing of switching output intervals between the first image sets and the second image sets, wherein the first image sets are each composed of a first image and a second image that are for stereoscopic display, and the second image sets are each composed of a third image and a fourth image that are for stereoscopic display, the video output unit outputs the first image, the third image, the second image, and the fourth image in a stated order, in accordance with an image output by the video output unit, the synchronizing signal has one of a first value, a second value, and a third value, the first value instructing to close a first shutter of shutter glasses, the second value instructing to close the first shutter and a second shutter of the shutter glasses, and the third value instructing to close the second shutter of the shutter glasses, the synchronizing signal transmission unit transmits the synchronizing signal to the shutter glasses such that a stereoscopic video composed of the first image sets is viewable, and when a stereoscopic video composed of the second image sets is viewed, the synchronizing signal received by the shutter glasses is delayed by the output interval.