H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/41
H04B 7/24 (2006.01) G01S 13/74 (2006.01) G08B 25/01 (2006.01) G08G 1/123 (2006.01)
Patent
CA 2029145
-18- ABSTRACT Electronic Systems for the Protection of Articles An electronic system for monitoring a predetermined number of articles and a method of operating the came in which the system comprises a primary radio transceiver mounted in or otherwise closely associated with each article to be monitored having programmed therein code digits unique to that article; a control computer apparatus separate from the articles arranged to carry details of the articles to be monitored including each set of unique code digits, and being provided with means for storing the unique code digits of articles embraced by the system nominated as stolen, and having associated therewith a secondary transceiver; the control computer apparatus and the secondary transceiver including means for radio transmitting at predetermined intervals the unique code digits of articles nominated as missing, and each primary transceiver being provided with means for responding to the transmission of its unique code digits with the radio transmission of those same code digits, the control computer apparatus having means whereby on receipt of those same code digits by the secondary transceiver, the apparatus produces details of the article transmitting those unique code digits. The primary transducer may -19- include alarm means which, on actuation, transmits its unique code of digits.
Leck James H.
Robic
Security Alert Limited
LandOfFree
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