ELECTRONIC LOCK AND ALARM SYSTEM

• US 3,659,154 A
• Filed: 01/05/1970
• Issued: 04/25/1972
• Est. Priority Date: 01/05/1970
• Status: Expired due to Term

• Current Assignee: Steven G. Finn
• Original Assignee: Steven G. Finn
• Inventors: Finn, Steven G.
• Primary Examiner(s): Pellinen, A. D.
• Application Number:
  US05/000,522
• Time in Patent Office: 841 Days
• Field of Search: 307/1AT 317/134 340/147R,164R,274
• US Class Current: 361/172
• CPC Class Codes: G08B 13/00 Burglar, theft or intruder alarms

Abstract

In an electronic lock and alarm system, a sequence of digitally coded signals, specified by logically comparing input coded signals from a manually operated selector matrix and preset coded signals from a programmable code detector, is transmitted to a sequence recognizer computer for determining the validity of the coded sequence, and terminals such as door locks, ingnition switches, etc. are operated by the computer in one of several modes specified by a user discriminatingly operating the selector matrix. In a first mode, the terminals are opened for accessibility to the user. In a second mode, the terminals are closed for inaccessibility to the user and a main alarm in the immediate vicinity is energized. In an optional third mode, the terminals are opened for accessibility to the user and a silent alarm is energized at a remote location.

Claims

1. A locking system comprising:

a. input matrix means including a plurality of first switch means for generating coded signals;

b. detector means including a plurality of first gate means and second switch means, said first gate means operatively connected to said first switch means, said first gate means operatively connected to said second switch means, said detector means generating first signals responsive to said signals generated by said input matrix means and governed by said second switch means;

c. control means, including a plurality of flip-flop means for generating second signals, operatively connected to said detector means, said cOntrol means responsive to said detector means;

d. sequence recognizer computer means, including a plurality of second gate means, operatively connected to said second switch means, and flip-flop means for generating third signals, the output signal of said sequence recognizer computer means responsive to said first and second signals of said detector means and control means, respectively; and

e. locking means operatively connected to said sequence recognizer computer means, said locking means being rendered operative and inoperative in response to selected third signals as at the output of said sequence recognizer computer means.

2. The locking system of claim 1 wherein said system includes main alarm means operatively connected to said sequence recognizer computer means and responsive to selected signals as at the output of said sequence recognizer computer means, said main alarm means alerting cognizant personnel in the immediate vicinity of said locking system.

3. The locking system of claim 1 wherein said system includes silent alarm means operatively connected to said sequence recognizer computer means and responsive to selected third signals as at the output of said sequence recognizer computer means, said silent alarm means alerting cognizant personnel at a distant location from said locking system.

4. The locking system of claim 1 wherein said first switch means is a plurality of push button switches, each said push button switch providing a specified binary code.

5. The locking system of claim 1 wherein said second switch means is a plurality of rotary switch means for specifying a sequence of signals which renders said locking means operative and inoperative.

6. A locking and alarm system comprising:

a. input switch means for generating coded signals;

b. detector means including first gate means and switch means, for generating first signals, said first gate means operatively connected to said input switch means, said switch means operatively connected to said first gate means, said detector means first signals responsive to said coded signals of said input switch means and said switch means;

c. control means including flip-flop means for generating control signals, said flip-flop means operatively connected to said detector means, said control means responsive to said detector means;

d. sequence recognizer computer means operatively connected to said switch means and flip-flop means for generating second signals, said second signals responsive to said first and control signals of said detector means and control means, respectively;

e. locking means operatively connected to said sequence recognizer computer means, said locking means being rendered operative and inoperative in response to selected second signals as at the output of said sequence recognizer computer means; and

f. alarm means operatively connected to said sequence recognizer computer means and responsive to selected second signals as at the output of said sequence recognizer computer means.

7. The locking and alarm system of claim 6 wherein said detector means includes a plurality of rotary switch means operatively connected to said input switch means for specifying a sequence of coded signals which renders said locking means operative and inoperative and activates and deactivates said alarm means.