Patent ID: 7692836

Claim:
A scanning image display device comprising: a light source section that emits light; a horizontal scanner that scans the light in a horizontal direction; a vertical scanner that scans the light in a vertical direction; and a vertical scanner control section that controls an operation of the vertical scanner, in such a manner that, when a discrepancy occurs between a target scan line number at which the horizontal scanner is to scan as determined by a format of a video signal and a scannable line number at which the horizontal scanner is actually capable of scanning, and when a difference obtained by subtracting the target scan line number from the scannable line number is a positive value, the vertical scanner control section controls the vertical scanner so as to put vertical scanning by the vertical scanner on standby within a time range from a point of time at which horizontal scanning by the horizontal scanner is completed in a first frame to a point of time at which a horizontal scanning start signal corresponding to a vertical synchronizing signal of the video signal in a second frame is input, and restarts the vertical scanning by the vertical scanner in synchronization with an input timing of the horizontal scanning start signal.