Originally Posted by CO_BBTechie
That's quite a chain of assumptions, maybe's, and may's.... You sound like you know more about it than the people you've posed the question to.
No certain knowledge - I'm just an old geek making assumptions about how you keep growing a product line without starting from scratch every time.
A camera chip is essentially an optically written/digitally read memory, so a manufacturer of those chips benefits by dealing with standards for control pins and pinouts, etc., since it means future chips can happen more readily, again without starting from scratch.
And I was intrigued when I upgraded my old Pearl with a new O/S that it changed in ways you would think would require hardware changes, like upgrading the camera to do video and upgrading Bluetooth to BT2.
So I'm just a geek making guesses.