Keyless entry system for vehicles in particular
DCFirst Claim
1. A keyless command entry system for use with a vehicle equipped with a wireless receiver for receiving an encoded command from an existing portable signal transmitter, the system comprising:
- a vehicle-mountable keypad accessible from outside of the vehicle when the vehicle is in a closed and locked condition;
a memory for storing a user authorization code; and
a wireless transmitter in electrical communication with the keypad and memory for transmitting the same encoded command as that transmitted by the portable signal transmitter to the receiver following entry of the user authorization code through the keypad.
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Abstract
A wireless remote-control transmitter includes circuitry for entering an identification code so that only an authorized operator can use the device. Use as a keyless entry system provides the owner of a vehicle equipped with a wireless receiver with an additional keypad-operated transmitter which may be vehicle mounted to perform some or all of the same functions as those available through an existing remote. In this embodiment, the keypad may be mounted behind a small section of the vehicle'"'"'s window glass, with command inputs being sensed using electrical, magnetic, or optical detection techniques. To save on battery power, the system automatically powers down during periods of non-use, use, with some form of wake-up signal being used to enter operational modes requiring increased power consumption.
162 Citations
26 Claims
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1. A keyless command entry system for use with a vehicle equipped with a wireless receiver for receiving an encoded command from an existing portable signal transmitter, the system comprising:
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a vehicle-mountable keypad accessible from outside of the vehicle when the vehicle is in a closed and locked condition; a memory for storing a user authorization code; and a wireless transmitter in electrical communication with the keypad and memory for transmitting the same encoded command as that transmitted by the portable signal transmitter to the receiver following entry of the user authorization code through the keypad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of providing a keyless command entry signal to a vehicle equipped with a receiver to receive the signal, comprising the steps of:
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providing a keypad-activated transmitter connected to a memory; storing, in the memory, information relating to a keyless command recognizable by the receiver and a user authorization code; mounting the keypad on the vehicle in such a way that the keypad is actuable from outside of the vehicle; and entering the authorization code through the keypad, causing the transmitter to transmit a wireless signal encoding the keyless command to the receiver. - View Dependent Claims (15, 16, 17, 18)
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19. A keyless entry transmitter for a vehicle including a remote-control code determination capability, comprising:
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an enclosure including a keypad having at least one key associated with locking or unlocking the vehicle; a transmitter for transmitting a wireless signal indicative of the lock/unlock command; a wireless remote receiver configured to receive and interpret a wireless remote-control signal from an existing keyless entry system for the vehicle; and an electronic controller operative to analyze the remote-control signal output by the existing keyless entry system, and store that command for regeneration upon entry of the lock/unlock control signal initiated through the keyboard.
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20. A keyless command entry system, comprising:
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a vehicle equipped with a wireless signal receiver and an associated portable signal transmitter enabling a user to transmit an encoded command from a remote location to perform a predetermined function at the vehicle; and a self-contained, vehicle-mountable device, including; a keypad accessible from outside of the vehicle, a memory for storing a user authorization code, and a wireless transmitter, in electrical communication with the keypad and memory, for transmitting the same encoded command as the portable signal transmitter, to perform the predetermined function, upon entry of the user authorization code through the keypad. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification