专利名称：Control apparatus for electric motors发明人：Geoffrey Sword,John Leslie
Lawrence,Stephen Richard Raggett,BernardBlakemore
申请号：US05/440701申请日：19740208公开号：US03986089A公开日：19761012
摘要：A control for an electric motor for driving the intermittent film drive mechanismin a flying-spot film scanner. The speed and phase of the motor output shaft is sensedand compared with the field-blanking pulses of a television system to bring the speedand phase into a desired relation with the field-blanking pulse rate and the field-blankingpulse time of occurrence. The rotation of the motor output shaft generates pulses at anadjustable rate and phase which can be compared in a comparator with the rate andphase of the field-blanking pulses.
申请人：COLOURVISION ASSOCIATES
代理人：Robert F. O'Connell
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容