Patent ID: 7868574

Claim:
A motor absolute position signal processing apparatus, electrically coupled to a signal processor and an optical encoder of a motor control system, for receiving two sets of differential signals, respectively SIN;/SIN and COS;/COS to control an operation of a motor, comprising: a first switch, electrically coupled to the optical encoder; a second switch, electrically coupled to the optical encoder and the first switch; a unique signal integration amplifier, electrically coupled to the first and second switches; a first separator, electrically coupled to the signal integration amplifier and the signal processor; a second separator, electrically coupled to the signal processor; and an inverter, having an unique input end being electrically coupled to the second separator and the first switch and an output end being electrically coupled to the second switch; wherein the signal processor outputs an enable signal that is processed by an inverter, for switching operation of the first or second switch, and the unique signal integration amplifier integrates, amplifies and transmits the two sets of differential signals outputted by the optical encoder to the signal processor.