User controlled device for sending control signals to an electric appliance, in particular user controlled pointing device such as mouse or joystick, with 3D-motion detection

摘要

A user controlled device, movable into a plurality of positions of a three-dimensional space, includes a MEMS acceleration sensor to detect 3D movements of the user controlled device. The device, such as a mouse, sends control signals correlated to the detected positions to an electrical appliance, such as a computer system. A microcontroller processes the output signals of the MEMS acceleration sensor to generate the control signals, such as screen pointer position signals and “clicking” functions.

主权项

1. A system comprising:
a pointing device; a sensor coupled to the pointing device and configured to detect movements, including acceleration, of the pointing device, the pointing device configured to transmit a first movement signal and a second movement signal each indicative of the movements of the pointing device; and a processor coupled to the sensor to receive the first and second movement signals, the processor configured to receive the wireless movement signals, to process the wireless signals, to calculate a difference between the first movement signal and the second movement signal, to calculate an acceleration of the pointing device based on the difference of the first and second movement signals, and to output movement tracking signals when an acceleration of the pointing device is smaller than an acceleration threshold, and to output a specific command signal when the acceleration of the pointing device is greater than the acceleration threshold.