Remember how Sony execs Ken Kutaragi and Phil Harrison revealed their motion-sensing controller - Sixaxis at the E3 2006 and it drew flak from everyone, as it had nothing novel in design?

Sony has since distanced itself from that design, but has now come back with another controller that supports motion-sensing tech and rumble support and this has been christened the DualShock 3.

Sony Computer Entertainment of America has applied for patent for this new design in the US Patent and Trademark Office and we got our hands on some of the designs from the online database on their website.

Filed in June this year, the patent details a new motion-sensing controller with a new ability to break apart and be put back together in more than one way. Also mentioned in the patent are details about a "hybrid video capture and ultrasonic tracking system" to deal with motion-sensing.

Information about the need for the sound component of the tracking system is mentioned in this way: "Current object tracking suffers in capture accuracy. This problem arises because conventional image analysis can only produce somewhat reliable measurements of the location of the user in two dimensions.

Broadly speaking, the present invention fills these needs by providing methods and systems for establishing communication between a computer program in a computing system and a controller to be held by a user in order to determine the three-dimensional location of the controller."

For complete technical details, you can visit here.