Vehicle security system having enhanced remote transmitter security
First Claim
1. A security system for a vehicle comprising:
- at least one vehicle sensor;
alarm indicating means for indicating an alarm at the vehicle; and
a controller switchable from an armed mode to a disarmed mode responsive to at least one coded remote transmitter, said controller in the armed mode being capable of generating an alarm responsive to said at least one vehicle sensor, said controller comprisingremote transmitter adding means for permitting addition of a coded remote transmitter capable of switching said controller to the disarmed mode, andremote transmitter verification means for generating a signal based upon a number of coded remote transmitters capable of switching said controller between the armed and disarmed modes.
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Accused Products
Abstract
A vehicle security system includes a controller for permitting addition of a coded remote transmitter capable of switching the controller from an armed mode to a disarmed mode, and generates a signal based upon a number of coded remote transmitters capable of switching the controller to the disarmed mode. The remote transmitter verification is preferably communicated to the user by flashing a dashboard mounted light a number of times corresponding to the number of coded remote transmitters responsive to turning vehicle ignition to the on position, and when the controller is in the disarmed mode. Accordingly, the user is ensured that only the coded transmitters under his control may operate the vehicle security system. The controller may also enter the disarmed mode responsive to receiving a predetermined coded signal from a remote transmitter, and generate an alarm based upon receipt of a coded signal other than the predetermined coded signal from the remote transmitter. More particularly, the coded signal may comprise a pseudorandomly coded signal which is decoded by the controller. Method aspects of the invention are also disclosed.
85 Citations
24 Claims
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1. A security system for a vehicle comprising:
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at least one vehicle sensor; alarm indicating means for indicating an alarm at the vehicle; and a controller switchable from an armed mode to a disarmed mode responsive to at least one coded remote transmitter, said controller in the armed mode being capable of generating an alarm responsive to said at least one vehicle sensor, said controller comprising remote transmitter adding means for permitting addition of a coded remote transmitter capable of switching said controller to the disarmed mode, and remote transmitter verification means for generating a signal based upon a number of coded remote transmitters capable of switching said controller between the armed and disarmed modes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A security system for a vehicle comprising:
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at least one vehicle sensor; alarm indicating means for indicating an alarm at the vehicle; and a controller switchable from an armed mode to a disarmed mode responsive to at least one coded remote transmitter, said controller in the armed mode being capable of generating an alarm responsive to said at least one vehicle sensor, said controller comprising remote transmitter adding means for permitting addition of a coded remote transmitter capable of switching said controller from the armed to the disarmed mode, ignition monitoring means for determining whether a vehicle ignition switch is in an off position or an on position, and remote transmitter verification means for indicating to a user a number of coded remote transmitters capable of switching said controller from the armed to the disarmed mode responsive to turning the vehicle ignition switch to the on position and when said controller is in the disarmed mode. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for operating a vehicle security system comprising at least one vehicle sensor;
- an alarm indicator for indicating an alarm at the vehicle; and
a controller switchable from an armed mode to a disarmed mode responsive to at least one coded remote transmitter;
the controller in the armed mode being capable of generating an alarm responsive to the at least one vehicle sensor;
said method comprising the step of;generating a signal based upon a number of coded remote transmitters capable of switching said controller from the armed mode to the disarmed mode; and indicating to a user the number of coded remote transmitters. - View Dependent Claims (20, 21, 22, 23, 24)
- an alarm indicator for indicating an alarm at the vehicle; and
Specification