Thread: Turn Phase Linear UV8 Touch Screen to Input Device?

So I have a Phase Linear UV8 which is a cheaper 7" in-dash motorized touch screen. It doesn't have USB or Bluetooth connectivity. Although, it does have 2 AUX inputs (Composite RCA [red, white, yellow]). It has a RCA style "TFT Output" which I'm guessing is rear/headrest screens. And, it also has a RCA video input for the reverse camera.

It's already a touchscreen, but I couldn't find any way to use it to control my Macbook, since there is only video connections and no data (Serial, USB, or Bluetooth) connections. Would anyone know how I can go about doing this?

I was thinking of getting an RCA Video to USB adapter cable, and connecting the "TFT Output" along with a Touchscreen controller with driver to the computer. Does anyone know if this would work?

Is there perhaps any methods/hack to add USB, Serial, or Bluetooth functionality to the touch screen itself (I also have a Nokia N97 that I would like to be able to control through the car's touch screen interface).

I am pretty tech savvy, and would be able to follow any ideas/instructions in hardware modification if anybody has ideas.

Thanks for all the input in advance.