发明名称 |
Projected image displaying apparatus and method of correcting color unevenness therein |
摘要 |
<p>A chromaticity meter measures chromaticity of light output for each of picture elements selected. Calculated from the measurement is corrective data on each of RGB colors, which in turn used to calculate corrective data on each of RGB at unselected picture elements. In this method, original video signals for each of RGB colors will be correctively modulated based on the thus obtained corrective data. A projected image displaying apparatus is constructed such that adjustment of chromaticity as to white as well as to black from the measurement by the chromaticity meter of chromaticity throughout the entire image, is carried out uniformly and reliably by automatic control using a micro-computer so as to determine optimal condition for correctively modulating the original video signal. This apparatus further includes means for storing the thus obtained optimal condition in a non-volatile memory. <IMAGE></p> |
申请公布号 |
EP0595649(B1) |
申请公布日期 |
2000.08.09 |
申请号 |
EP19930308656 |
申请日期 |
1993.10.29 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
FUKUDA, HIDENORI;HAYASHI, HIROKAZU |
分类号 |
G02F1/133;G09G3/36;H04N9/31;H04N17/02;(IPC1-7):H04N17/04 |
主分类号 |
G02F1/133 |
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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