发明名称 |
VIDEO PROJECTOR CONTROLLER |
摘要 |
PURPOSE:To offer a video projector controller having an automatic zoom function and an automatic focusing function corresponding to a desired screen size on a screen by controlling a first driving motor based on a first result computed based on distance information and the desired screen size and controlling a second driving motor based on a computed second result. CONSTITUTION:A distance signal 7 being the output of a distance sensor 1 and a screen size signal 8 being the output of a screen size input device 2 are added to an arithmetic operation circuit 3 and computed. Then, the first computed result (k9) is added to the first driving motor 4 and the second computed result 10 is added to the second driving motor 5. As for an optical lens used for this controller, a zoom ratio adjustment place and a focus adjustment place are provided to one lens and respectively adjusted by the driving motor 4 and the driving motor 5. |
申请公布号 |
JPH03215841(A) |
申请公布日期 |
1991.09.20 |
申请号 |
JP19900011307 |
申请日期 |
1990.01.19 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
MORIMOTO HIROAKI |
分类号 |
G03B13/36;G02B7/08;G02B7/28;G03B21/00;H04N5/74;H04N9/31 |
主分类号 |
G03B13/36 |
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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