Patent ID: 7696985
Filing Date: 2010-04-13
Classification: G06F,H04M

Abstract:
1. A handheld device, comprising: a display subsystem including a local display screen; a pointing device subsystem including a movement detector that produces display control signals in response to user input and has a handheld device mode of operation in which the pointing device subsystem selectively communicates the display control signals produced by the movement detector in response to the user input to the display subsystem to control the local display screen and an input device mode of operation in which the pointing device subsystem selectively communicates the display control signals produced by the movement detector in response to the user input to a peripheral device communication channel to control a remote display screen of a peripheral device, wherein the pointing device subsystem comprises an optical port and an optical sensor that produces optical sensor signals in response to light received through the optical port, wherein the pointing device subsystem produces the display control signals from the optical sensor signals; and an input mode detector that produces an input mode control signal having a state selected from a first input mode state and a second input mode state, wherein the pointing device subsystem processes the optical sensor signals into the display control signals differently depending on the state of the input mode control signal, wherein the pointing device subsystem produces the display control signals with a first directional polarity when the input mode control signal is in the first input mode state and produces the display control signals with a second directional polarity opposite the first directional polarity when the input mode control signal is in the second input mode state.