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(1)遥控信号处理如图3(图见上期)所示。红外遥控信号发出的遥控编码信号经遥控接收器U1(AT138BT—09)接收后,经内部光/电转换后,从其③脚输出信号,再经R82送入微处理器U2(TDA15063)輭輵訛脚内部,经重新译码,变换为各种控制信号由微处理器支配。图3中的R1是电源限流电阻,C1、C2为滤波电容。(2)键控信号处理长虹LS07机芯液晶电视键控电路有两路:一路是
(1) remote control signal processing shown in Figure 3 (see the previous period). The remote control signal sent by the infrared remote control signal is received by the remote control receiver U1 (AT138BT-09). After the internal optical / electrical conversion, the signal is output from its pin ③ and then sent to the microprocessor U2 (TDA15063) via R82 Internal feet, after re-decoding, transformed into a variety of control signals dominated by the microprocessor. R1 in Figure 3 is the power supply current limiting resistor, C1, C2 for the filter capacitor. (2) key signal processing Changhong LS07 movement LCD TV key control circuit has two: all the way