Modular control device used in control system used in video surveillance applications, has internal universal serial bus (USB) hub that is comprised of two link assembly terminals of USB uplink ports and downlink ports

摘要

The modular control device (1) has housing comprising an internal universal synchronous bus (USB) hub (20) that is equipped with an USB uplink port and several USB downlink ports. Several signals are received or transmitted through several connecting units (30a,30b), according to USB protocol. The internal USB hub is comprised of two link assembly terminals of USB uplink ports and downlink ports. Independent claims are included for the following: (1) control system; and (2) method for coupling control devices.