| 摘要 |
PURPOSE:To simplify a transmitter by providing a device, which generates the ultrasonic wave of a specific frequency band in a single shot, and an ultrasonic receiving part providing with a device which displays a discrimination signal for an ultrasonic transmitter and controlling the transmission from the transmitter with a signal pattern. CONSTITUTION:The ultrasonic wave of a specific frequency band is generated in a single shot from an ultrasonic transmitter (source) 1 of an ultrasonic wire less remote controller, and this ultrasonic signal passes a microphone 4 and is amplified by an amplifier 5 and is applied to a tuning circuit 6. The ultrasonic wave from the circuit 6 is supplied to a microcomputer 8 as the ultrasonic receiver after waveform shaping in a means 7. A special signal pattern is gener ated in this computer to control a control machine 9. Received signals from an X-ray transmission source or the like are controlled by the ultrasonic receiver and are displayed on a display device 10. |
