通用红外遥控系统由发射和接收两大部分组成，应用编/解码专用集成电路芯片来进行控制操作，如图1所示。发射部分包括键盘矩阵、编码调制、LED红外发送器；接收部分包括光、电转换放大器、解调、解码电路。

-Universal infrared remote control system consists of transmitting and receiving two major components, application of encoder/decoder ASIC chip for control operations, as shown in Figure 1. Transmitter section includes keyboard matrix, coded modulation, LED infrared transmitter　receiver section includes optical, electrical conversion amplifier, demodulator, decoder circuit.