Patent ID: 7348897

Claim:
An apparatus for transmitting a position detection signal of a multi-shaft motor whereby a parallel-form detection signal that is output from position-detecting devices disposed on each of a plurality of motors and used for indicating a motor rotation position is transmitted to motor drivers for controlling the driving of the motors, said apparatus comprising: a transmission-side converter provided with a serialization circuit; a reception-side converter provided with a deserialization circuit; an encoder-side parallel signal transmission path for connecting the position detectors and the transmission-side converter; a driver-side parallel signal transmission path for connecting the reception-side converter and motor drivers; and a serial signal transmission path for connecting the transmission-side converter and the reception-side converter; wherein the transmission-side converter converts, to serial signals, parallel-form detection signals provided from the position-detecting devices via the encoder-side parallel signal transmission path, and presents the resulting signals to the reception-side converter via the serial signal transmission path; and the reception-side converter returns the received serial-form detection signals to parallel-form signals and presents the resulting signals to the motor drivers via the driver-side parallel signal transmission path.