Universidad De Zaragoza

Juan Carlos Moreno Carbonel

Jorge Leza Espanol

The system is based on the arrangement of a plurality of terminals (), (I') . . . (I), which are interconnected with one another to form a digital network by means of two databuses, one write and one read, by means of differential transmission, with a hybrid connection topology based inter alia on UTP-type cables (). Each terminal is constituted by a DLP-type card (), which contains a programmable logic device for the management of a series of cards associated with the card (), said cards being a main card () and a user-interface card (), which enable the user to configure the various system options, it being possible, also, to incorporate one or more extension cards (H-H&#x2032;) for the input and output of audio/video signals, the Internet, a telephone line or an automatic-door-entry line, and also a remote-control and alarm card () for activating external loads, activating alarms and receiving signals originating from sensors.

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Zaragoza, Spain

Juan Carlos Moreno Carbonel