VIDEO DISPLAY SYSTEM, PROJECTION TYPE VIDEO DISPLAY DEVICE AND PROJECTION TYPE VIDEO DISPLAY DEVICE CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To solve the problem in which when transmitting video signals from a portable terminal 201 to a plurality of projectors 101A to C via a radio wave, buffering processing at radio wave units 115 of respective projectors are different to thereby cause a delay, and further variation occurs in video outputs from respective projectors, thus, the video becomes defective.SOLUTION: A video signal 302 to be transmitted from a portable terminal 201 has video time information 301 to output a video signal added. A maximum video signal delay time T shared by each projector 101 is added to the video time, and on the basis of time information shared by each projector, the video signal is delayed to be output, which in turn a synchronous video is output to be displayed from a plurality of projectors.SELECTED DRAWING: Figure 1