WIRELESS REMOTE CONTROL DEVICE
PURPOSE:To eliminate an operation mistake, by transmitting the second high output instruction signal in case a reception confirming signal is not received within a fixed time. CONSTITUTION:For a transmission system 21, a transmitting circuit 24 is controlled by a transmission output varying circuit...
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Zusammenfassung: | PURPOSE:To eliminate an operation mistake, by transmitting the second high output instruction signal in case a reception confirming signal is not received within a fixed time. CONSTITUTION:For a transmission system 21, a transmitting circuit 24 is controlled by a transmission output varying circuit 25 to transmit a low output and a high output to an instruction signal. While a reception system 27 supplies the instruction signal to a device 30 to be controlled via a receiving circuit 28 and a demodulating circuit 29. When the instruction signal is received normally, a reception confirming signal is transmitted from a reception confirming signal transmitting circuit 31. This confirming signal is received by a reception sensing circuit 26, and the second transmission of the instruction signal from the circuit 24 is inhibited to the circuit 25. In such a way, it is possible to increase the normal transmission/reception enable distance without increasing the power consumption so much. Thus an operation mistake can be avoided. |
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