Infrared receiver
An infrared receiver and infrared technology, applied in the field of infrared receivers, can solve the problems of short idle time, short remote control signal, large circuit area, etc., and achieve the effect of improving reliability, reducing cost and improving applicability
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[0062] The present invention will be described in further detail below in conjunction with accompanying drawing:
[0063] Figure 1 to Figure 8 A first embodiment of the invention is shown.
[0064] see figure 1 As shown, in this embodiment, the infrared receiver includes:
[0065] an input unit including a photodiode for converting an infrared input signal received from the outside into an electrical signal;
[0066] a preamplifier, amplifying the electrical signal converted by the input unit;
[0067] a variable gain amplifier, amplifying the electrical signal amplified by the preamplifier, and controlling the gain of the variable gain amplifier;
[0068] a limiting amplifier, amplifying the electrical signal amplified by the variable gain amplifier;
[0069] a bandpass filter for filtering out noise outside the passband in the electrical signal amplified by the limiting amplifier;
[0070] a comparator, comparing the signal output by the bandpass filter with a preset...
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