I think I have everything I am looking for, if you can see or think of anything I missed, let me know.
I am looking for an Operating System (OS) for the Raspberry Pi (Rpi)that only does one simple thing. All I need it to do is to go to a single website.
The following is an example of what it needs to do. You will need to wait 15 to 20 seconds between frames. (It is best viewed with the Google Chrome browser in full screen mode-F11).
This is what needs to happen.
The Rpi is powered up it needs to go to a full screen to show the contents of a website. While booting the screen should be blank or the screen should just show the word (Booting)so that no information of the OS is shown. Video with sound would be a plus. Java is a must.
Also, no keyboard or mouse support would be used except for me to change the address of the website on another computer and the log-in information to the closest wifi network. I do not want any keyboard or mouse support or any other way that someone could enter information in the Rpi. This will be done on a laptop.
How this works is that I need to keep the website in cache and that it only updates by the use of a wireless usb wifi adapter to update the site about every four hours. If no update or wireless single is found it continues to show the cached website. I need it to work off a single SD card.
All changes to the web site will be done on the server, and not on the Rpi.
I will keep the OS open source and post it online.
If you can accomplish this please respond.