Infrared Receiver

[emavil]

Thanks a lot guys, but for now, i will NOT focus myself on the programming. Maybe later. What I would like to know is basically the detailed & simple technical functionality on how an infrared receiver works (layman explanation).

[dhouston]

Thanks a lot guys, but for now, i will NOT focus myself on the programming. Maybe later. What I would like to know is basically the detailed & simple technical functionality on how an infrared receiver works (layman explanation).

This page gives a brief explanation of the fundamentals although it is more from the transmitter side of things.

• http://davehouston.net/ir-rf_fundamentals.htm

The datasheets for any of the TSOPxxxx receivers have a block diagram that gives a good explanation of how they work. Basically, they have a photosensitive element that reacts to the 940nM wavelength of the IR typically used in consumer IR (CIR) and then a bandpass filter designed for the carrier frequency used followed by a low pass filter that demodulates the carrier. The output is the data envelope of the signal that was transmitted.