| 摘要 |
<p>The projector control system uses projectors with variable light intensity. Each projector is provided with a light intensity control and a slide changing mechanism. A coding circuit produces a voltage pulse coded signal indicating the way in which the projectors are to be controlled, and a magnetic tape recording is made to store this pulse coded signal. When the stored signal is read it is decoded in order to provide independent control signals to the slide changing mechanisms and light intensity controls. The control signals are converted into suitable form to operate the equipment effecting the necessary change. The system is used in conjunction with a sound commentary for presentation of information in industry, or for advertising purposes.</p> |
