Communications: electrical – Continuously variable indicating – With meter reading
Patent
1986-03-27
1988-07-26
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
340825560, 70278, 361172, E05B 4900, G08B 1900
Patent
active
047603933
ABSTRACT:
A system for securing a building complex incorporating a plurality of lockable access locations, including a keypad-operated remote unit at each access location coupled for communication with a control station through a communication network. Access locations are room doors, as of a hotel or an apartment building and the remote units are grouped by floor, each floor having a sub-controller to relay messages and perform control functions. The control station includes a desk unit with a keypad for entering floor-related access code information as chosen by a guest and a separate keyboard for assignment of a room number by a desk clerk which addresses a remote unit. Access codes are stored at remote units located at the assigned rooms so that a room can be unlocked only by manual entry of the proper access code on a keypad of the remote unit. Each remote unit functions independently to open a door associated with it and remains operable even if other portions of the system malfunction. Status data reports and automatic controls are also implemented. Suspicious patterns at the access units are detected, both with respect to individual units and groups of units. Security action is taken on the occurrence of suspicious or threatening patterns, as repeated failures at individual or multiple access units.
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Marlee Electronics Corporation
Yusko Donald J.
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