Patent ID: 7653772
Filing Date: 2010-01-26
Classification: G06F

Abstract:
1. A control system comprising: an electronic device; a hub; and one or more external devices that are capable of sequentially connecting to said electronic device, wherein said electronic device comprises: each external device among said one or more external device comprises: said controller is further capable of performing operations of judging, in the case that a judgment result notified from a newly connected external device among said one or more external devices is that said newly connected external device is inoperable, whether another external device among said one or more external devices excluding said newly connected external device is already connected via said hub, and in the case that it is judged that said another external device is already connected, reducing current supply to said another external device among said one or more external devices excluding said newly connected external device by changing operation mode of said another external device, and supplying currents preferentially to said newly connected external device based on said newly connected external device being newly connected via said hub.