Patent ID: 6909421

Claim:
A wireless input device comprising a transmitter unit, and a receiver unit adapted for installing in a connecting port of a computer system and receiving from said transmitter unit to control a pointer on the computer screen of the computer system, said transmitter unit comprising a housing formed of a top cover shell and a bottom cover shell, a circuit board mounted inside said housing, a sensor unit electrically connected to said circuit board, and a battery power source installed in said housing and electrically connected to said circuit board, wherein said transmitter unit comprises a receiving open chamber in one side of said housing, and a receptacle provided inside said receiving open chamber and adapted for keeping said receiver unit after removal of said receiver unit from the computer system said receiving open chamber comprising a circuit board having a power switch, and wherein in response to positioning of the receiver unit in the receiving open chamber of the transmitter unit, power supply from said battery power source to said wireless input device is cut off.