Patent ID: 8139032

Claim:
A power-saving computer mouse comprising: a housing, a microprocessor, a wireless transmitter, a button and roller/optical signal receiving and processing unit, a transmitting antenna, and a battery set, a switching transistor defining a conduction path switchably connecting said button and roller/optical signal receiving and processing unit to system ground, and a proximity sensor switch for controlling said switching transistor to switch on/off said battery set by proximity-sensing an approach of a user's hand, said proximity sensor switch comprising a capacitive proximity sensor and a charge induction plate mounted inside said housing, said capacitive proximity sensor providing a high potential output to wake up said microprocessor and to trigger said switching transistor in switching on said battery set when an operator holds said housing with a hand, said capacitive proximity sensor providing a low potential output to have said microprocessor enter sleep mode and said switching transistor switch off said battery set when the operator moves the hand away from said housing.