Patent ID: 8098992
Filing Date: 2012-01-17
Classification: G08C,H04B,H04N

Abstract:
1. A display apparatus, comprising: a display panel; an infrared (IR) light emitted diode (LED) transmitter, comprising a first terminal and a second terminal, for emitting an IR; an IR receiver, comprising a first terminal, a second terminal and a third terminal, for receiving an IR; a microcontroller, comprising a first pin, a second pin, a third pin, a fourth pin and a fifth pin, wherein the first pin thereof is coupled to the first terminal of the IR LED transmitter, the second pin thereof is coupled to the second terminal of the IR LED transmitter, the third pin thereof is coupled to the first terminal of the IR receiver, the fourth pin thereof is coupled to the second terminal of the IR receiver, the fifth pin thereof is coupled to the third terminal of the IR receiver, wherein in a remote control signal receiving period, the microcontroller receives a IR remote control signal transmitting from a remote control through the third pin thereof, fourth pin thereof and fifth pin thereof according to a specific protocol; in a distance detecting period, the microcontroller controls the current intensity flowing through the IR LED transmitter through the first pin thereof and the second pin thereof to output a specific IR signal, and then the microcontroller receives the specific IR signal through the third pin thereof, fourth pin thereof and fifth pin thereof, and then determines the distance between the display apparatus and an external object according to the current intensity; in an ambient light detecting period, the microcontroller detects a photoelectric current of the IR LED transmitter to determine an intensity of an ambient light, wherein the microcontroller controls the backlight illumination of the display panel according to the intensity of the ambient light.