Patent ID: 8384775
Filing Date: 2013-02-26
Classification: G09G,H04N

Abstract:
1. A scanning image display device comprising: a light source section that emits light; a horizontal scanner that scans the light in a horizontal direction and that is capable of scanning at a scan line number defined by a first video signal; a vertical scanner that scans the light in a vertical direction; and a vertical scanner control section that controls the vertical scanner in such a manner that, when a second video signal is input that has a scan line number that is less than the scan line number defined by the first video signal, the vertical scanner control section controls the vertical scanner so as to perform vertical scanning with a scanning speed of vertical scanning which is higher than the scanning speed of vertical scanning in the case of the first video signal being input, and temporarily returning a drawing position of vertical scanning to an initial position within a time range from a point of time at which horizontal scanning of a current frame is completed to a start time of a next frame, the vertical scanner control section restarts the vertical scanning from the initial position in synchronization with a start timing of the next frame, wherein the vertical scanner control section performs an operation of returning the drawing position of the vertical scanning by the vertical scanner to the initial position during the first half of the time range, and uses a second half of the time range as time for allowing the vertical scanner to settle in a stabilized state at the initial position.