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use TSOP-1738 ir sensor to detect ir signal. It will detect a 38kHz modulated ir signal only. You can make the transmitter using a 555 astable multivibrator designed at 38kHz .
You could make the circuit in simple way by using some flip flops , counters etc or could make it more efficient using microcontrollers.
Using a microcontroller you could even controll it using your TV REMOTE!!
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If you want to make it via microcontroller , then inform me. I will give the full source code and circuit diagram . I had designed it few days ago.
I am new to embedded and i am trying to design a IR transmitter and receiver using 8051 microcontroller. I need help to design the circuit using 8051. So please provide me circuit diagram for this and also if any websites to learn circuit designs.