| 摘要 |
<p>A method of controlling a projection-type display device (200,500,700) and a projection-type display device (200,500,700) using the same optimizes the contrast ratio of a screen regardless of ambient brightness conditions. A projection-type display device (200,500,700) having an aperture for transmitting light toward a screen includes a sensor (205,705) for detecting ambient brightness with respect to the projection-type display device (200,500,700); a generator (203,503,703) for generating an aperture control signal according to the detected ambient brightness; and a controller (202,502,702) for adjusting an open/close range of the aperture according to the generated aperture control signal.</p> |
