Car alarm control system

A vehicle alarm control system built into a single integrated circuit, which includes a number of inputs including M/D-, INO-, INO+, H/T-,C.S+, and INC- which monitor a plurality of sensors strategically placed around an automobile; a fail safe/override/memory circuit which prevents the alarming of the alarm should any of the inputs become defective but allows the user to temporarily disable the defective input; and instant trigger override control which allows the user to cause the sensors to instead trigger the alarm after a delay upon the opening of the door; a main power cut warning control which triggers to provide an audible warning signal should the alarm be removed; a per-entry alert control which triggers an audible warning immediately should the automobile's door handle be touched while the alarm is armed; and a headlight on warning control which causes the alarm to give an audible warning if the automobile's headlights are on after the automobile's engine is turned off.

BACKGROUND OF THE INVENTION 
Vehicle alarms are designed to detect either attempted unauthorized 
intrusion of the protected vehicle or vandalism to said vehicle, and sound 
a warning upon said detection. Most such alarms offer a number of common 
features such as active and/or passive arming, instant or delay trigger, 
input from a plurality of sensors connected to the automobile's doors, 
hood, trunk, or other areas, and output to a siren or lights. 
Conventional vehicle alarms as described above suffer from a number of 
drawbacks: 
1. The number of functions available usually do not satisfy the consumer's 
demands. 
2. Complicated structure due to the large number of discrete components 
makes the alarm prone to errors. 
3. Complicated structure due to the large number of discrete components 
makes mass production difficult. 
The present invention provides an automobile alarm control system which 
offers a number of features to an automobile alarm: 
1. Single IC--All of the circuits needed to control the alarm's functions 
are built-into a single integrated circuit (IC) for ease of manufacture 
and trouble-shooting. 
2. Complete protection--Completely protects an automobile by monitoring 
said automobile's doors, hood, trunk, windows, and the rest of the body by 
means of a plurality of sensors strategically placed in said automobile. 
3. Power door lock and power window control--Controls the locking and 
unlocking of said automobile's power door lock system and the closing of 
its power windows in conjunction with the arming and disarming of said 
automobile. 
4. Electric fan control--Prevents said automobile alarm control system from 
triggering via a motion sensing or current sensing device when said 
automobile's electric fan turns on. 
5. Fail-safe and override control--If any sensor is not operating properly, 
said automobile alarm control system will prevent said alarm from arming 
in order to alert the user of said alarm to the problem. However, should 
said user desire to bypass said fail-safe and override control so that 
said alarm can still be armed in the above-described situation, said 
fail-safe and override control allows for this possibility. Furthermore, 
should said user loose his or her normal means of disarming said alarm, 
said fail-safe and emergency disarm control provides an alternative method 
for said disarming. 
6. Instant trigger override control--If the normal means for disarming said 
alarm were to malfunction or become lost, said user would have the means 
to cause those sensors which normally trigger said alarm instantly upon 
the opening of a door of said automobile while said alarm is armed to 
instead trigger said alarm after a delay upon said opening of said door. 
7. Headlight on warning control--If the automobile's headlights are not 
turned off after said automobile's engine is turned off, the alarm will 
give an audible and visible warning to the owner. 
8. Main power cut warning control--If power to the alarm's is ever removed, 
an audible warning signal will be given immediately. 
9. Pre-entry alert control--If an automobile's door's handle is touched, an 
audible and visible warning will be given immediately. A microwave, shock, 
or other such sensor can also be connected to this control in order to 
detect a thief's presence before an actual break-in or vandalism. 
SUMMARY OF THE INVENTION 
The present invention provides a vehicle alarm control system for an 
automobile which includes inputs from a plurality of sensors mounted in 
strategic locations around said automobile and which are labeled M/D-, 
INO-, INO+, H/T-, C.S.+, and INC-, the triggering of any of which 
immediately triggers an audible or visible warning; electric fan control 
which disables inputs M/D- and C.S.+ when said automobile's electric fan 
is running while said alarm is armed to prevent accidental triggering of 
said alarm by said fan; fail-safe and override control which normally 
prevents the arming of said alarm should any of said inputs become 
defective but which allows the user of said automobile to temporarily 
disable said defective input to allow said alarm to arm and said inputs 
which are not defective to protect said automobile; instant trigger 
override control which allows said user to cause those sensors which 
normally trigger said alarm instantly upon the opening of a door of said 
automobile while said alarm is armed to instead trigger said alarm after a 
delay upon said opening of said door should the normal means for disarming 
said alarm malfunction or become lost; headlight on warning control which 
cause the alarm to give an audible warning to said user if said 
automobile's headlights are on after said automobile's engine is turned 
off; main power cut warning control which triggers an audible warning 
signal immediately should the power to said alarm ever be removed; 
pre-entry alert control which triggers an audible warning immediately 
should said automobile's door handle be touched while said alarm is armed 
or if, with the addition of optional sensors, a thief prepares to break 
into or vandalize said automobile while said alarm is armed; the 
above-mentioned functions of said vehicle alarm control system being built 
into a single application-specific IC for ease in manufacturing and 
trouble-shooting.