A mobile personal digital assistant (PDA) allows a user to enter information using both a touch screen and voice commands with a stylus. The stylus includes a microphone positioned at one end, and a transmitter for transmitting received voice signals to either a personal computer (PC) or the PDA. In...http://www.google.com/patents/US7656397?utm_source=gb-gplus-sharePatent US7656397 - Pointing device with integrated audio input and associated methods
