| 发明名称 |
METHODS AND APPARATUS FOR CONTROLLING SLIDE PROJECTORS |
| 摘要 |
<p>The invention uses frequency control of lamps and magazines in projectors and is especially adapted for programmed control by recording the frequency signals produced by previous rehearsal of the programme under manual control. The circuit was an integrated voltage from the frequency signal to control threehold devices operating triggered switches controlling supply to the lamps, and to actuate a magazine control; a saw tooth signal being used as the basic timing signal in operating the lamps.</p> |
| 申请公布号 |
CA1043855(A) |
申请公布日期 |
1978.12.05 |
| 申请号 |
CA19740201233 |
申请日期 |
1974.05.30 |
| 申请人 |
ANIMATIC COMPANY LIMITED |
发明人 |
BOWRY, ANTHONY D.;FRANCIS, CHRISTOPHER |
| 分类号 |
G03B21/00;G03B23/00;H05B39/08;(IPC1-7):05B37/02 |
主分类号 |
G03B21/00 |
| 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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