Patent ID: 8264475
Filing Date: 2012-09-11
Classification: G06F

Abstract:
1. An electronic device with infrared touch input function, comprising: a display unit defining an signal display area; an infrared input device comprising a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the signal display area, a micro-processing unit configured for controlling the at least one light emitting device to emit infrared light, detecting infrared light paths obstructed via the light detecting devices, sending information of the obstructed infrared light paths to a central processing unit(CPU); and the CPU being configured for performing functions according to the information of the obstructed infrared light paths; wherein the at least one light emitting device is positioned on two adjacent sides of the circuit board, and the at least one light detecting device is positioned on one corner of the circuit board facing the light emitting devices, or the at least one light detecting device is positioned on two adjacent sides of the circuit board, and the at least one light emitting device is positioned on one corner of the circuit board faced to the light detecting devices; wherein the information of obstructed infrared light paths comprising two or three combinations of which infrared light paths are obstructed, order of the obstructed infrared light paths, and number of the obstructed infrared light path when there are two or more infrared light paths being obstructed in a predetermined time.