Digital communications system for residential and custodial-care environments, office and the like
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United States of America Patent
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Jul 29, 2014
Grant Date -
May 7, 2009
app pub date -
Feb 23, 2007
filing date -
Mar 14, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The system is based on the arrangement of a plurality of terminals (1), (I′) . . . (In), 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 (4). Each terminal is constituted by a DLP-type card (7), which contains a programmable logic device for the management of a series of cards associated with the card (7), said cards being a main card (8) and a user-interface card (9), which enable the user to configure the various system options, it being possible, also, to incorporate one or more extension cards (H-H′) 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 (10) for activating external loads, activating alarms and receiving signals originating from sensors.
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