We all almost use An IR remote controller to use operate a TV OR DTH OR any other electronics Gadgets in out home but ever you think how this process works means when you press any key in front of your TV then it react as per command given by you …..
Lets know how it happen ..in very simple words , no more technical depth..
A IR Remote Controller works in a line of sight “means the operating device must be placed in front of Remote controller” as a Transmitter (means will send signal from itself) and transmit an IR (Infrared) modulated (coded) signal (binary command codes in Electronics Engineering language) once any keys of the Remote controller pressed by you then a signal corresponding to pressed key will transmit and carrying a command which hit to the IR Receiver of electronics Device which is mounted in the front panel of your TV (mostly hidden not seen in front side of device) or any Device it must be in front of you ( it can be TV, STB , DTH , AC , etc ) and then receiver demodulates (decode) the receiving signal and activate the desired required function/command sent to the receiving device through the inbuilt Programmed microcontroller . All this activity happens in a very short time in micro seconds. you can see a little glass bulb type component in front of every IR remote and that is mainly a IR LED which transmit the signal towards to any receiving device….and rest of the all above said process happened..
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