| 摘要 |
PURPOSE:To simplify a transmission circuit between a transmission means and multiple terminals by providing a signal detection section detecting the presence of the action signal output from other terminals and controllers outputting the self action signals when no output is detected. CONSTITUTION:When the shift of an illumination apparatus optical system is completed based on the control signal at a terminal 5 having a controller 11 (CPU 1), a signal detection section 12 detects whether the reply presence signal is outputted to a transmission means 4 from the controller 11 (CPU 2) of another terminal 5 or not, and it waits for a preset period if the signal is outputted. If no signal is outputted, it performs the same detection on the next terminal 5. If no signal is outputted on the controller 11 (CPUn), it outputs the action signal of the action data to the transmission means 4 together with the self reply presence signal. The collision of the action signals from the terminals 5 is prevented, and the transmission circuit to the transmission means 4 can be made one channel and simplified. |
