Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
1997-03-18
2001-01-16
Pope, Daryl (Department: 2736)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S506000, C340S870030, C340S870030, C340S870030, C379S039000, C700S017000
Reexamination Certificate
active
06175307
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to security systems and in particular is directed to a security system having a control panel and a combination keypad and door sensor.
BACKGROUND OF THE INVENTION
One of the issues with respect to security systems is the ease of installation of the system and the ability of the system to function easily in many different configurations. Most recently many security systems have used wireless sensors which at least transmit signals to a control panel using a radio frequency. Many of these systems use two-way communication between the sensors and the control panel. Two-way communication is very effective and reliable and the control panel can also carry out investigations to determine whether the sensors are active.
A more recent change in security systems is the ability to have a monitoring station carry out two-way communication with anyone located in the premises. It is now common for the monitoring station to announce that an alarm has been received and the police have been dispatched. A microphone allows anyone within the premise to respond and this microphone also allows the monitoring station to record the audible activity within the monitored space.
Security systems continued to evolve and glass break sensors are often provided in the security system. These sensors listen for a sound of breaking glass and produce an alarm when such a sound is detected.
The technology for effectively monitoring a given space is now quite well developed and the challenge often is being able to provide effective coverage at a reasonable cost.
SUMMARY OF THE INVENTION
A security system according to the present invention, comprised of a control panel and accommodation keypad and door sensor. The control panel includes an arrangement connected to a telephone system for communication with a monitoring station. The control panel includes a microphone, a single processing arrangement for the signal from the microphone, a microprocessor and a sound generating arrangement. A combination keypad and door sensor comprised of polarity of keys for entering codes into the keypad for arming and disarming the system, a microphone, a signal processing means for the signal of the microphone, a microprocessor and a sound generating arrangement. The control panel and the combination keypad and sensor use the sound generated in the microphones to form a high frequency communication link there between. The sound generator of the combination keypad and sensor produces a communication link part of the signal and high frequency range and produces an audible portion for the user indicating a requirement to enter information by the keypad. The control panel and the combination keypad and sensor interact to allow user to arm and disarm the system at the combination keypad and sensor and have the instructions communicated to the control panel by the two-way communication channel there between.
According to an aspect of the invention, the combination keypad and sensor also use the microphone as part of the sensing arrangement detecting other changes in the space being monitored.
According to a further aspect in the invention, the microphone and sound generating arrangement of the control panel is used by the control panel as part of the two-way communication channel with the monitoring station when an alarm condition has been communicated to the monitoring station.
A further aspect of the invention the control panel also processes the signal of its microphone for signals indicative of an alarm condition in the monitored space and thereby acts as a further sensor of the system.
REFERENCES:
patent: 5517185 (1996-05-01), Acimovic et al.
patent: 4324497 (1994-04-01), None
patent: WO 95 16980 (1995-06-01), None
Digital Security Controls Ltd.
Pope Daryl
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