With all the speculations about the Revolution controller some Nintendo fans are now going through patents hold by Nintendo and their closest partners for clues about what the Revolution controller could really be.

Here are a few links to some of the more interesting patens. Just remember that most patents will never be put in use, and big companies like Nintendo hold hundereds of various patents.

http://tinyurl.com/4evmh
A patent for the ability to change the size of your controller grip by replacing it with another grip.

http://tinyurl.com/adu67
A patent for a controller that is able to sense the adrenaline level of the player, where characters on screen can react to that input.

http://tinyurl.com/a2w3j
A patent for multiplayer gameplay where all players of the game share a common screen while also each player have their own individual screen.

http://tinyurl.com/72jdb
Haptic touch technology patent. Interface for controlling graphical image –
(THIS PATENT WAS NOT ASSIGNED TO NINTENDO)

Source : Total Next Gen