发明名称 |
System and method for adjusting white balance of projector type color display device. |
摘要 |
<p>A system for adjusting the white balance of a projector type color display device is shown. The color display device includes three single color cathode ray tubes from which single color beams are projected onto a screen to form a colored image on the screen. The white balance adjusting system comprises a first device for feeding one of the three cathode ray tubes with all white signal to cause the same to project a single color image on the screen; a second device for detecting a luminance value of the single color image on the screen; a third device for deriving luminance values of the other single color images from the detected luminance value; and a fourth device for controlling the selected cathode ray tube in such a manner that the derived luminance values are put in a tolerance which is provided for dealing with a noise of the second device. <IMAGE></p> |
申请公布号 |
EP0543332(A2) |
申请公布日期 |
1993.05.26 |
申请号 |
EP19920119620 |
申请日期 |
1992.11.17 |
申请人 |
SONY CORPORATION |
发明人 |
ONUMA, HIDEKI;FUNADO, SHIGETO |
分类号 |
H04N9/73;H04N17/00;H04N17/04 |
主分类号 |
H04N9/73 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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