Retrofit RF wireless tech into old IR remote control systems?

[Game-Tech.us]

I've been trying to find information on how to take an old Infrared remote control system, in my case a Nintendo NES Satellite, and update it with Radio Freq technology. I even signed up to a Texas Inst. forum and got a couple really vague replies from a TI employee saying things like 'our CC253x series should work great for RF control.' I need specifics or pointed in a better direction or linked to better info.

 

[Nigel Goodwin]

It really depends on what the existing system is - most will directly output the ultrasonic carrier and data from a single pin, and you need the data without the carrier to feed a radio unit.

 

[Game-Tech.us]

I did find a microcontroller in the transmitter and in the reciever. I wonder if the signal gets sent from the one in the transmitter to the IR hardware and I could pick it up there? Would I need to pull the code from it to figure out which pin to check?

 

[Nigel Goodwin]

The connections to the transistor feeding the IR LED should make it obvious which pin is the output of the chip.

I wouldn't have thought it would be possible to read the code from it?, even assuming it is a micro.