USB How do you create a bootable custom USB application?

Question

Many LCD televisions nowadays have USB ports so you can plug in your camera and it becomes a camera gallery on the TV.

I want to write a gallery program which, when plugged in to the TV, will start to cycle through the images on the USB device. How would I do this? Is it possible to write some sort of OS/application which can run on the USB device alone?

Answer 1

The gallery application is built into the TV, it is not on the USB. I doubt the TV is easily modable nor is there a published API.

Answer 2

That would depend entirely on the television's firmware whether it would even be supported. If it were, the specification of how to do it would need to be observed.