linw: Just thinking, the only way of having an instant-on setup is to keep power on the unit and have it go into sleep mode when the car is parked. Wonder what the battery drain is when in sleep mode?
Any more ideas??
No its not. They could have a separate video decoder for the composite camera go straight to the lcd panel. The one I had the misfortune of using laid a whole lot of pointless lines over the image in software.
My analog lcd panel for a reversing camera was on and showing within half a second of getting a video signal. Don't think I could have started the car and get it into reverse any quicker than the screen powered up.