Remote control system

Abstract

Abstract PURPOSE:To simplify the formation of a control signal wave and also to control several controlled circuits by one control signal wave by sending out control pulses obtained by combining modulated waves with specific frequencies assigned and showing controlled variables by pulse widths. CONSTITUTION:Control pulses P0-P5 are generated by pulse generating circuit 12 on the basis of the set value of control regulator 13 and corresponding to clock pulses of control generating circuit 41, they are converted at gate circuit 42 by frequency oscillator 46 into modulated-wave pulses of frequencies f1-f3, which are sent to modulation circuit 43. The output of circuit 43 is radiated from transmitting antenna 17 by way of high-frequency amplifier circuit 16. This radiated radio wave is so generated that the 1st control pulse is modulated by three kinds of modulated waves of frequencies f1-f3 to include components of pulse widths t0-t2 at the same time, and the 2nd control pulse is modulated by two kinds of modulated waves of frequencies f1 and f2 to include components of pulse widths t4 and t5 at the same time. Thus, six controlled circuits can be brought under control at the reception side.

Inventors

• 👤 Akira Ichimura

Bibliographic Details