Abstract
Recently, remote controls of electric appliances have become complicated. For people who cannot operate remote controllers easily, a simple to operate one is needed. This paper proposes a wireless remote controller system using a large area optical sensor. When one of the sensors is indicated with a laser pointer, a signal of the remote control is transmitted to the electric appliance. The optical sensor which has a large sensing area can be easily indicated with a laser pointer. However, there is a problem that the cost is high to make an optical sensor with a large area. Therefore, a large area optical sensor consisting of frosted glass was developed. The area of the optical sensor can be enlarged easily by increasing the area of the frosted glass without changing the photodetector. The sensor is low cost and can detect the light pointed to the frosted glass sensitively.
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