发明名称 |
PROJECTOR AND PROJECTION IMAGE CORRECTION METHOD THEREOF |
摘要 |
<p>A transformation coefficient storing unit has correction tables which are generated based on classification of zooming magnification in a manner of arithmetic progression. An optical mechanism unit supplies information on a zooming magnification Z to a switch control unit of the transformation coefficient storing unit. The switch control unit controls a table selection unit to select any from the correction tables based on the zooming magnification Z. The transformation coefficient storing unit selects a coefficient set from the selected correction table based on inclination angles thetaH and thetaV and supplies the selected coefficient set to a trapezoidal correction unit. The trapezoidal correction unit performs trapezoidal correction based on the supplied coefficient set.</p> |
申请公布号 |
EP1574054(B1) |
申请公布日期 |
2013.07.17 |
申请号 |
EP20040771678 |
申请日期 |
2004.08.09 |
申请人 |
CASIO COMPUTER CO., LTD. |
发明人 |
INOUE, HIDEAKI |
分类号 |
H04N5/74;G03B21/00;G03B21/14;H04N9/31;H04N17/00 |
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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