Patent ID: 8194192
Filing Date: 2012-06-05
Classification: H04N,H05B

Abstract:
1. A projection display comprising: video information inputting means that inputs video information; luminance information detecting means that detects characteristics of luminance information of the input video information and that outputs luminance information digitalized on the basis of the input video information; a light source; light source lighting means that outputs a power waveform to cause the light source to light in accordance with the luminance information obtained by the luminance information detecting means; and a light modulating device that receives light radiated from the light source and modulates the light in accordance with the video information and the luminance information to perform video display, wherein in order to adjust the amount of light with which the light can be expressed as video on a screen, the light source lighting means separates a unit of time configuring the video into an effective light time t assuming that P