| 摘要 |
PURPOSE:To remove interference and to prevent a controlled equipment from malfunction by assigning frequency the levels of a transmitting carrier to a remote controller and the controlled equipment. CONSTITUTION:Receiving parts 4-1, 4-2, 4-3 respectively correspond to transmitting parts 3-1, 3-2, 3-3. Respective pairs execute transmission/reception by individual carrier frequency levels. Respective receiving parts 4-1-4-3 are constituted so as not to fetch modulating signals other than the assigned frequency levels. Thereby, even if signals are simultaneously sent from different remote controllers 1-1-103, interference is not generated, so that the controlled equipments 2-1-2-3 can be prevented from the malfunction.
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