Video projector and method for shifting projected picture

Details Video projector and method for shifting projected picture Video projector and method for shifting projected picture

2007-07-03

2007-07-03

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Composite projected image

C353S069000, C353S121000, C348S747000

Reexamination Certificate

active

11043266

ABSTRACT:
A scaler unit writes an input video signal into a frame memory and scales 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 displays a picture based on the video signal. A projection lens projects the picture displayed on the display device onto a screen. A control unit controls the scaler unit so as to scale 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 shifts 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.

REFERENCES:
patent: 2005/0146520 (2005-07-01), Ikeda
patent: 2003-084738 (2003-03-01), None

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