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公开(公告)号:US11050293B2
公开(公告)日:2021-06-29
申请号:US16601909
申请日:2019-10-15
Inventor: Yuta Kurosaki , Shintaro Hino , Masahiro Arakawa , Katsuaki Hamamoto
Abstract: A plurality of controlling circuits control a plurality of respective shutdown switches to turn ON/OFF. A first signal system transmits, in a direction from one end of the plurality of controlling circuits to the other end of the plurality of controlling circuits, a significant signal during a normal operation and a non-significant signal when the operation needs to be stopped. The second signal system transmits, in a direction from the other end of the plurality of controlling circuits to the one end of the plurality of controlling circuits, a significant signal during the normal operation and a non-significant signal when the operation needs to be stopped. The other end of the plurality of controlling circuits transmits the non-significant signal through second signal system when a signal received through first signal system is the non-significant signal.