Device with built-in signal discrimination and output synchronization circuits
First Claim
1. A multi-device system comprising:
- a combined power supply/communications link;
a separate synchronizing link;
a plurality of devices coupled to both links wherein at least one of the devices includes interface circuitry for receiving externally generated signal patterns from the synchronizing link, and additional circuitry responsive to at least one predetermined, received signal pattern for generating a local output in synchronization with the received signal pattern, wherein the at least one device includes an ambient condition sensor, and control circuitry coupled thereto for establishing the presence of a predetermined ambient condition and circuitry responsive thereto for coupling a signal pattern indicative thereof to the synchronizing link.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrical unit, such as an ambient condition detector, incorporates pattern discrimination circuitry. A received pattern is analyzed and, if it is in accordance with a predetermined pattern, the unit outputs an audible and/or visible indicium synchronized with the incoming pattern for the duration thereof. The unit also includes circuitry for emitting a corresponding output signal pattern to at least one other detector. A system which incorporates a plurality of electrical units, at least one of which has the pattern discrimination circuitry produces at least one synchronized audible or visible output indicative of a predetermined condition throughout the system. Patterns can include predetermined tonal alarm indicating output patterns as well as predetermined visible alarm indicating output patterns.
32 Citations
29 Claims
-
1. A multi-device system comprising:
-
a combined power supply/communications link;
a separate synchronizing link;
a plurality of devices coupled to both links wherein at least one of the devices includes interface circuitry for receiving externally generated signal patterns from the synchronizing link, and additional circuitry responsive to at least one predetermined, received signal pattern for generating a local output in synchronization with the received signal pattern, wherein the at least one device includes an ambient condition sensor, and control circuitry coupled thereto for establishing the presence of a predetermined ambient condition and circuitry responsive thereto for coupling a signal pattern indicative thereof to the synchronizing link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A monitoring system of a type having a common control element with a power supplying/communication link extending therefrom comprising:
-
a plurality of ambient condition detectors coupled to the link wherein the dectectors receive power from the link, and, in response to a sensed, predetermined condition couple a condition indicating signal to the link;
a synchronizing line which extends at least between the detectors for transmission of synchronizing signals between detectors whereby in response to one of the detectors sensing the predetermined condition, condition specific synchronizing signals are coupled to the synchronizing line and to the detectors. - View Dependent Claims (21, 22)
-
-
23. A detector usable in an alarm system comprising:
-
a housing;
a control circuit carried by the housing;
a power input, carried by the housing and coupled to the control circuit, for receipt of electrical energy from an external source;
a synchronizing input/output terminal carried by the housing and coupled to the control circuit;
an ambient condition sensor, carried by the housing and coupled to the control circuit, whereby the control circuit establishes the presence of a predetermined condition;
local output circuitry coupled to the control circuit, for generating local alarm signals, responsive to an established local predetermined condition;
synch interface output circuits coupled between the input/output terminal and the control circuits, responsive to the established local predetermined condition for coupling a repetitive output pattern, synchronized with the local signals, to the input/output terminal. - View Dependent Claims (24, 25, 26, 27, 28, 29)
-
Specification