Normal
from what i know, the video signal is always on. but the signal passes through about 6 different modules before it hits the screen. there is a data pulse at the screen when the camera is activated or deactivated. i dont want to sound like a jerk, but it took nav tv engineers months to crack the data code for the front camera. i dont know what kind of resources you have, but i dont think its as simple as you think it may be.
