Integrated passive entry and remote keyless entry system
First Claim
1. An integrated passive entry and remote keyless entry system for a vehicle, comprising:
- a vehicle communication system mounted in said vehicle; and
a portable fob for carrying by a user;
wherein said vehicle communication system comprises a trigger generator, an LF transmitter responsive to said trigger generator for broadcasting an LF wakeup signal, and an RF transmitter for broadcasting a UHF status message including vehicle status data to said portable fob, and wherein said vehicle communication system broadcasts a challenge signal to said portable fob after said LF wakeup signal;
wherein said portable fob comprises an LF receiver responsive to said LF wakeup signal, a fob controller for determining response data according to said challenge signal, and an RF transmitter for broadcasting a UHF response signal incorporating said response data;
wherein said portable fob further comprises an RF receiver for receiving said vehicle status data, a visual display for visually reproducing said vehicle status data, and a manual input key for activating said fob controller to generate a remote control message, wherein said RF transmitter in said portable fob broadcasts a UHF control signal incorporating said remote control message, wherein said vehicle communication system further comprises an RF receiver responsive to said UHF control signal, and wherein said vehicle communication system further comprises a base controller for initiating a corresponding remote control function in response to said UHF control signal.
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0 Petitions
Accused Products
Abstract
A vehicle communication system mounted in the vehicle and a portable fob for carrying by a user are provided. The vehicle communication system comprises a trigger generator, an LF transmitter for broadcasting an LF wakeup signal, and an RF transmitter for broadcasting a UHF status message including vehicle status data. The vehicle communication system broadcasts a challenge signal after the LF wakeup signal. The portable fob comprises an LF receiver responsive to the LF wakeup signal, a fob controller for determining response data, and an RF transmitter for broadcasting a UHF response signal incorporating the response data. The portable fob further comprises an RF receiver for receiving the vehicle status data, a visual display for visually reproducing the vehicle status data, and a manual input key for activating the fob controller to generate a remote control message. The RF transmitter in the portable fob broadcasts a UHF control signal incorporating the remote control message. The vehicle communication system further comprises an RF receiver responsive to the UHF control signal and a base controller for initiating a corresponding remote control function in response to the UHF control signal.
245 Citations
12 Claims
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1. An integrated passive entry and remote keyless entry system for a vehicle, comprising:
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a vehicle communication system mounted in said vehicle; and
a portable fob for carrying by a user;
wherein said vehicle communication system comprises a trigger generator, an LF transmitter responsive to said trigger generator for broadcasting an LF wakeup signal, and an RF transmitter for broadcasting a UHF status message including vehicle status data to said portable fob, and wherein said vehicle communication system broadcasts a challenge signal to said portable fob after said LF wakeup signal;
wherein said portable fob comprises an LF receiver responsive to said LF wakeup signal, a fob controller for determining response data according to said challenge signal, and an RF transmitter for broadcasting a UHF response signal incorporating said response data;
wherein said portable fob further comprises an RF receiver for receiving said vehicle status data, a visual display for visually reproducing said vehicle status data, and a manual input key for activating said fob controller to generate a remote control message, wherein said RF transmitter in said portable fob broadcasts a UHF control signal incorporating said remote control message, wherein said vehicle communication system further comprises an RF receiver responsive to said UHF control signal, and wherein said vehicle communication system further comprises a base controller for initiating a corresponding remote control function in response to said UHF control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating a combined two-way RKE/passive entry system utilizing a portable fob carried by a user and a vehicle base station mounted in a vehicle, wherein said portable fob includes a visual display for displaying vehicle status information, said method comprising the steps of:
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a user interacting with said vehicle in order to generate a trigger event;
broadcasting an LF wakeup signal from said vehicle base station to said portable fob in response to said trigger event;
broadcasting a UHF challenge signal from said vehicle base station to said portable fob;
determining response data in said portable fob in response to said UHF challenge signal;
broadcasting a UHF response signal including said response data from said portable fob to said vehicle base station;
broadcasting a UHF remote control message from said portable fob to said vehicle base station in response to manual activation of a corresponding switch element on said portable fob; and
broadcasting a UHF status message from said vehicle base station to said portable fob including vehicle status data. - View Dependent Claims (11, 12)
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Specification