| 摘要 |
PURPOSE: A lamp wireless control device using a dial key sound provides ID code or command code having an inherent control operation to each of all controlled devices, generates a key sound identical with the ID code or command code by using a dial key sound, and remote-controls a lamp and another devices. CONSTITUTION: A lamp wireless control device includes a non-volatile memory for storing IC code or command code, a code input part(310) for inputting ID code or command code. A microphone(21) absorbs audio signal of a standard dial key sound generated from a sound source(10) by the user. A band pass filter(40) detects a frequency band of a dial key in the absorbed audio sound. A variable gain amplifier(50) amplifies an output signal of the band pass filter(40), and varies an amplification rate. A signal detection filter(100) detects a frequency band of a dial key in the absorbed audio signal through the variable gain amplifier(50), and divides the detected frequency into a high-frequency band and a low-frequency band. A controller(200) amplifies an output signal of the signal detection filter(100), identifies a command code of the input dial key of the microphone(10), compares the command code with the ID code or the command code. If the command code is identical with the ID code or the command code, the controller(200) generates a control signal corresponding to the identical code. A load driver(320) drives a load according to the control signal from the controller(200).
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