Building security system
First Claim
1. A building security system for coupling to a building telephone line which includes a building subscriber telephone line connected to a subscriber telephone set at one end and a central office line at the other end, the central office line leading to a central office exchange, and a visitor entrance panel proximate a building entrance door, comprising:
- a microprocessor means for controlling operation of said system, for receiving and transmitting data and control signals to and from said central office exchange, said entrance panel and said subscriber telephone set and thereby controlling communication between a central office caller, a subscriber and a visitor via said building telephone line;
programmable memory means for storing preselected security codes and an operating program for operation of said microprocessor means;
a building door lock means coupled to said entrance door;
means for selectively coupling said microprocessor means directly to a reserved central office line leading from said building to the central office exchange, wherein said coupling means responds to control signals from the entrance panel or to signals received via said reserved line; and
wherein said microprocessor means includes means for distinguishing between a visitor call and a security entry code sequence and for comparing a security entry code sequence being entered with stored security entry codes in said memory means and for unlocking the entrance door on recording a correspondence between an entered security code sequence and a stored security code and wherein said microprocessor means further includes means responsive to control signals received from a subscriber telephone set to send a control signal to said building entrance door lock means to cause the unlocking of said door.
3 Assignments
0 Petitions
Accused Products
Abstract
A building security system for coupling to a building telephone line which includes a building subscriber telephone line connected to a subscriber telephone set on one end and to a central office line at the other end. The central office line leads to a central office exchange. The building security system controls communication between a central office exchange caller, a subscriber and a visitor at an intercom station in order to allow subscriber control of visitor entry and for allowing entry without subscriber control to authorized personnel. The system includes a micro-controller, a non-volatile memory coupled to micro-controller which is programmable for storing system parameters including security entry codes and a building door latch of an entrance door which is coupled to the micro-controller. The latch is operative in response to a control signal from the micro-controller to unlock the associated entrance door. A line relay is coupled to micro-controller for breaking direct connection of the central offices subscriber line and inserting in series with each of the latter a security system line which operates in response to a control signal from the micro-controller. A visitor intercom station is coupled to the micro-controller and is connectable to the subscriber telephone set through the system line in response to a control signal from the micro controller. The intercom station has a key pad for manually entering data and response to which the micro-controller accesses the subscriber telephone set or operates the door latch if the data entered corresponds to a security entry code number stored in the non-volatile memory.
62 Citations
12 Claims
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1. A building security system for coupling to a building telephone line which includes a building subscriber telephone line connected to a subscriber telephone set at one end and a central office line at the other end, the central office line leading to a central office exchange, and a visitor entrance panel proximate a building entrance door, comprising:
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a microprocessor means for controlling operation of said system, for receiving and transmitting data and control signals to and from said central office exchange, said entrance panel and said subscriber telephone set and thereby controlling communication between a central office caller, a subscriber and a visitor via said building telephone line; programmable memory means for storing preselected security codes and an operating program for operation of said microprocessor means; a building door lock means coupled to said entrance door; means for selectively coupling said microprocessor means directly to a reserved central office line leading from said building to the central office exchange, wherein said coupling means responds to control signals from the entrance panel or to signals received via said reserved line; and wherein said microprocessor means includes means for distinguishing between a visitor call and a security entry code sequence and for comparing a security entry code sequence being entered with stored security entry codes in said memory means and for unlocking the entrance door on recording a correspondence between an entered security code sequence and a stored security code and wherein said microprocessor means further includes means responsive to control signals received from a subscriber telephone set to send a control signal to said building entrance door lock means to cause the unlocking of said door. - View Dependent Claims (2, 3)
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4. A building security system for coupling to a plurality of pairs of building telephone lines coupled to respective subscriber telephone sets for controlling communication between a central office exchange caller, a subscriber and a visitor at a building entrance panel, and for controlling visitor entry through an entrance door, comprising:
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a microprocessor means for controlling operation of said system, for receiving and transmitting data and control signals to and from said central office exchange, said entrance panel and said subscriber telephone sets for controlling communication between a central office caller, a subscriber and a visitor; non-volatile memory means coupled to said microprocessor means programmable for storing system parameters including security entry codes and re-programmable to change the parameters; a latch solenoid driving circuit having an input coupled to said microprocessor means and an output connectable to a door latch solenoid of an entrance door and operative in response to a control signal from said microprocessor means to activate said solenoid and unlock said door; a plurality of line relays each coupled to respective pairs of telephone lines and to said microprocessor means for breaking direct connection of a pair of central office lines and a corresponding pair of subscriber telephone lines and inserting in series with the latter pair of lines, a respective pair of lines of said security system in response to a control signal from said microprocessor means; means for selectively coupling said microprocessor means directly to a reserved pair of central office lines leading from the building to the central office exchange, wherein said coupling means selectively responds to signals from said reserved central office line and control signals form said entrance panel; means for comparing a transmitted remote programming security code received on said reserved pair of central office lines with a stored one and, if matched, to accept reprogramming instructions received on said reserved pair of central office lines to a re-program one or more stored security entry codes, emergency telephone numbers or other parameters; means for transmitting tones on said reserved pair of central office lines corresponding to a selected stored emergency telephone number in response to auto-dial control signals received from the entrance panel; wherein said microprocessor means includes means for distinguishing between a visitor call and a security entry code sequence being entered with stored security entry codes in said memory means and for unlocking the entrance door on recording a correspondence between an entered security code sequence and a stored security code. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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Specification