发明名称 |
IMAGE CORRECTION APPARATUS. |
摘要 |
An apparatus for correcting images includes: a test signal generator for generating a test signal; a display device for displaying the test signal in a region on a display screen; an imaging device for imaging the test signal displayed on the display screen in a scanning direction so as to produce an image signal having a rising linear portion and a falling linear portion along the scanning direction; a position calculator for calculating a position of a centroid of the image signal for each of R, G and B colors, based on the rising linear portion and the falling linear portion; an error detector for detecting an amount of error between the detected positions of the centroids for R, G and B colors; a correction circuit for correcting a convergence and a geometric distortion for the region, based on the amount of error. <IMAGE> |
申请公布号 |
EP0616473(A3) |
申请公布日期 |
1996.07.24 |
申请号 |
EP19940104093 |
申请日期 |
1994.03.16 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
INOUE, IKUNORI;TSUJIHARA, SUSUMU |
分类号 |
H04N5/74;H04N9/28;H04N9/69;H04N9/73;H04N17/00;H04N17/04 |
主分类号 |
H04N5/74 |
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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