| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an excessive current from flowing during power supply from a photographic lens unit 1. <P>SOLUTION: A CPU and a transceiver communicating via a network line are mounted on each of CPU substrates 11 to 21. Power is supplied to the camera communication CPU substrate 11 from a camera body 41, and power is supplied to the CPUs and the transceivers mounted on the CPU substrates 11 to 21. A power-on permission command is transmitted from the camera communication CPU substrate 11 to the iris control substrate 19, and power is supplied to a driver and the like mounted on the iris control substrate 19. Driving of an iris motor 26 becomes possible. Thereafter, a power-on permission command is transmitted to the zoom control CPU substrate 17, the focus control CPU substrate 18, and the like, and driving of a zoom motor 22, a focus motor 24, and the like becomes possible. Since motors 22 to 24 are not simultaneously driven by the CPU substrates 17 to 19, flow of an excessive current can be prevented. <P>COPYRIGHT: (C)2013,JPO&INPIT |
