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Magnetic recording and reproducing apparatus arranged to save electric power consumed in detecting tape end and reduce load on microprocessor
Magnetic recording and reproducing apparatus arranged to save electric power consumed in detecting tape end and reduce load on microprocessor
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机译:磁记录和再现设备,其布置为节省在检测磁带末端时消耗的电力并减少微处理器上的负载
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摘要
A magnetic recording and reproducing apparatus arranged to use a magnetic tape. The apparatus operates to derive the current taken-up position of the magnetic tape from the signals that are proportional to the rotation frequencies of a capstan motor, a supply reel and a take-up reel. Only when the taken-up position is near the tape end, the apparatus activates LEDs (light emitting elements) for sensing the tape end and photo-transistors (light receiving elements), for sensing the tape end.
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