Patent ID: 7237903

Claim:
A video projector comprising: a scaler unit for writing an input video signal into a frame memory, the scaler unit being capable of scaling the number of pixels of the input video signal to any number of pixels when the input video signal is read out from the frame memory; a display device for displaying a picture based on the video signal whose number of pixels is scaled by the scaler unit; a projection lens for projecting the picture displayed on the display device onto a screen; and a control unit for controlling the scaler unit, the scaler unit scaling the number of pixels of the input video signal to a smaller number of pixels than the maximum displayable number of pixels of the display device, the scaler unit shifting the picture displayed on the display device to a desired position in the displayable region on the display device by changing the timing of the vertical and horizontal superimposition of the video signal according to an instruction from an operating device so as to shift the picture projected on the screen.