Security system

• US 5,543,778 A
• Filed: 04/19/1993
• Issued: 08/06/1996
• Est. Priority Date: 04/19/1993
• Status: Expired due to Term

• Current Assignee: Code Systems Incorporated (VOXX International Corporation)
• Original Assignee: Code-Alarm Incorporated (VOXX International Corporation)
• Inventors: Stouffer, Peter J.
• Primary Examiner(s): Crosland, Donnie L.
• Application Number:
  US08/049,464
• Time in Patent Office: 1,205 Days
• Field of Search: 340/539, 340/531, 340/506, 340/825.44, 340/425.5, 340/426, 340/429, 340/430, 365/189.01, 365/185.3, 365/189.09, 257/316, 257/317, 257/314, 257/322, 257/3
• US Class Current: 340/539.14
• CPC Class Codes: B60R 25/102 a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence

Abstract

A home security system includes a plurality of alarm elements; a central console including a microprocessor in wireless communication with the alarm elements and effective to receive a signal from the alarm elements; an automobile including an alarm system in wireless communication with the central console'"'"'s microprocessor and effective to activate certain alarm elements when the automobile'"'"'s alarm system is in close proximity to the home security system and when the automobile is started; the microprocessor being connected to a tri-state analog to digital convertor which includes a plurality of resistors whose resistance values cooperatively determined an accuracy of analog to digital conversion with respect to the received signal transmitted from the alarm elements. An EEPROM that includes gray scale conversion is also realized.

Claims

1. A home security system comprising:

a plurality of alarm elements;

a central console including a microprocessor in wireless communication with said plurality of alarm elements and effective to receive a signal from said alarm elements;

an automobile including an alarm system in wireless communication with said central console'"'"'s microprocessor and effective to activate certain of said plurality of alarm elements when said automobile'"'"'s alarm system is in close proximity to said home security system and when the automobile is started;

said microprocessor being connected to a tri-state analog to digital convertor, said tri-state analog to digital convertor including a plurality of resistors whose resistance values cooperatively determined an accuracy of analog to digital conversion with respect to the received signal transmitted from said alarm elements.