PS3 controller has no vibration function?

[apatel314]

I am not sure what law suit you are talking about.

The only reason that I know off, as to why Sony is not incorporating DualShock for PS3 controllers is the fact that the vibrate function causes interference patterns (similar to noise patterns in digital display output) with its motion sensors. Since the PS3 controller is motion sensored (like Nintendo's Wii) it is pretty much impossible to have DualShock capabilities, by Sony or any other company. It is a very typical case of signal interference pattern. Often known as the DSP (Digital Signal Processing) collisions.

Hope this helps.