Vehicle security system with combined key fob and keypad anti-driveaway protection
First Claim
Patent Images
1. A vehicle security system, comprising:
- a controller that controls an operation condition of an engine associated with the vehicle and a lock condition of a door lock associated with the vehicle, said controller including a receiver portion;
an ignition key slot for receiving a key and being useable to start the engine;
a remote signalling device that selectively generates a remote signal that is received by said controller receiver portion; and
an input device supported on the vehicle and having a signal generating portion that selectively generates an access signal that is received by said controller receiver portion;
wherein said controllerchanges said lock condition of said door lock from a lock condition into an unlocked condition and said operation condition of said engine from an unusable condition into a useable condition upon receiving either of said remote signal or said access signal,determines whether a key has been inserted into said ignition slot, andchanges said engine operation condition back to the unusable condition when said key is not inserted into said ignition slot within a preselected time after said controller changed said engine operation condition to the useable condition.
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Abstract
A vehicle security system combines anti-driveaway protection with vehicle entry signalling. Either a remote signalling device is used to generate a remote signal or an input device, mounted on the vehicle, is used to generate an access signal. An entry control unit receives and interprets the remote signal or the access signal and unlocks the vehicle doors when appropriate. At the same time, the entry control unit communicates with an engine controller that an appropriate signal has been received. In response, the engine controller enables the vehicle engine to be started so that the vehicle can be driven in a conventional manner.
51 Citations
17 Claims
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1. A vehicle security system, comprising:
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a controller that controls an operation condition of an engine associated with the vehicle and a lock condition of a door lock associated with the vehicle, said controller including a receiver portion; an ignition key slot for receiving a key and being useable to start the engine; a remote signalling device that selectively generates a remote signal that is received by said controller receiver portion; and an input device supported on the vehicle and having a signal generating portion that selectively generates an access signal that is received by said controller receiver portion; wherein said controller changes said lock condition of said door lock from a lock condition into an unlocked condition and said operation condition of said engine from an unusable condition into a useable condition upon receiving either of said remote signal or said access signal, determines whether a key has been inserted into said ignition slot, and changes said engine operation condition back to the unusable condition when said key is not inserted into said ignition slot within a preselected time after said controller changed said engine operation condition to the useable condition. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling a vehicle security system having a remote signalling device and an input device supported on the vehicle, comprising the steps of:
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(A) defining a first condition where a remote signal has been generated by the remote signalling device; (B) defining a second condition where an access signal has been generated by the input device; (C) determining if the first condition from step (A) or the second condition from step (B) exists; (D) placing a vehicle entry subsystem into an unlocked condition and placing a vehicle engine into a usable operation condition when either the first or second condition exists; (E) defining a third condition where an ignition key has been placed into a key slot; (F) determining whether the third condition exists within a preselected time after performing step (D); and (G) placing the vehicle engine into an unusable operation condition when the third condition does not exist within the preselected time. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of controlling a vehicle security system having a remote signalling device and an input device supported on the vehicle, comprising the steps of:
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(A) defining a first condition where a remote signal has been generated by the remote signalling device; (B) defining a second condition where an access signal has been generated by the input device; (C) determining if the first condition from step (A) exists or the second condition from step (B) exists; (D) placing a vehicle entry subsystem into an unlocked condition and placing a vehicle engine into a useable operation condition when either the first or second condition exists; (E) defining a third condition where a door of the vehicle has been opened subsequent to step (D) being performed; (F) defining a fourth condition where an ignition key has been placed into a key slot subsequent to step (D) being performed; (G) determining whether the third or fourth condition exists; and (H) placing the vehicle engine into an unusable operation condition when either the third or fourth condition does not exist within a preselected time after performing step (D). - View Dependent Claims (17)
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Specification