Abstract: An input apparatus for a computer system comprises an image object, a prime motion detector, and a receiver. The prime motion detector has an image detection unit, a G-sensor, a mouse module, a switch unit, and a micro control unit (MCU). The image detection unit is used for detecting the image object. The switch is coupled to the G-sensor, the image detection unit and the mouse module. By such means, the switch unit can select to transmit an output of the mouse module, or transmit outputs of the G-sensor and the image detection unit to the MCU according to a selection signal. The MCU encodes an output of the switch unit to generate a detecting data to the receiver, and the receiver transmits the detecting data to the computer system for operating the computer system.

Abstract: An input apparatus for a computer system is provided. The input apparatus includes a positioning module, a motion detector, and a receiver. The positioning module includes a plurality of positioning light sources, for emitting light rays having a predetermined wavelength. The motion detector includes a G-sensor, and a light sensing unit, for detecting a motion state of the motion detector in a three-dimensional space, and outputting a sensing data. The light sensing unit is provided for receiving the light rays emitted from the positioning light sources. The receiver is coupled to the computer system via a transmission interface, and is adapted for receiving the sensing data outputted from the motion detector via a wireless transmission path. In such a way, the receiver can generate an operation instruction according to the sensing data, and transmit the operation instruction to the computer system via the transmission interface, for operating the computer system.