KEY FOB CHALLENGE REQUEST MASKING BASE STATION
First Claim
1. A system comprising:
- a base station, including a transceiver, an indicator, and a processor, programmed todetect presence of a key fob using one or more inputs, andresponsive to the key fob being detected, broadcast an interference signal using the transceiver to prevent the key fob from detecting challenge requests and set the indicator to indicate presence of the broadcast of the interference signal.
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0 Petitions
Accused Products
Abstract
A base station may include a transceiver, an indicator, and a processor programmed to detect presence of a key fob using one or more inputs. When the key fob is detected, the processor may direct the transceiver to broadcast an interference signal using the transceiver to prevent the key fob from detecting and responding to challenge requests and set the indicator to indicate presence of the broadcast. When an access request is received from a modem, using the transceiver the base station may temporarily discontinue broadcast of an interference signal to send a challenge request to the key fob and receive a challenge response, and send a response to the access request including information based on the challenge response.
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Citations
23 Claims
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1. A system comprising:
a base station, including a transceiver, an indicator, and a processor, programmed to detect presence of a key fob using one or more inputs, and responsive to the key fob being detected, broadcast an interference signal using the transceiver to prevent the key fob from detecting challenge requests and set the indicator to indicate presence of the broadcast of the interference signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. The system of claim 1, wherein the interference signal includes an Amplitude Key Shift (ASK) signal with one of alternating bits, all one bits, or random bits.
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10. The system of claim 1, wherein the base station further includes a modem configured to communicate over a wide-area network, and the processor is further programmed to:
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receive an access request to access the key fob from the modem, temporarily discontinue the broadcast of the interference signal, send a challenge request to the key fob using the transceiver, receive a challenge response to the challenge request using the transceiver, resume the broadcast of the interference signal, and send a response to the access request including information based on the challenge response.
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11. A method comprising:
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detecting presence of a key fob; in response to the key fob being detected, broadcasting an interference signal using a transceiver to inhibit the key fob from responding to challenge requests, and displaying an indicator to indicate presence of the broadcast; and responsive to the key fob no longer being detected, discontinuing the broadcast of the interference signal and resetting the indicator to no longer display presence of the broadcast.
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12. The method of claim 11, further comprising:
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receiving an access request to access the key fob from a modem; temporarily discontinuing the interference signal to send a challenge request to the key fob and receive a challenge response; and send a response to the access request including information based on the challenge response.
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13. The method of claim 11, further comprising, in response to the key fob being detected, sending the fob a command to suspend ultra-high-frequency (UHF) responses from the key fob.
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14. The method of claim 11, further comprising displaying the indicator by adjusting one or more of brightness and color of a light to indicate presence of the broadcast.
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15. The method of claim 11, further comprising periodically sending key fob challenge requests to confirm the presence of the key fob.
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16. The method of claim 11, further comprising confirming the presence of the key fob using one or more of a weight sensor and an inductive charging coil.
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17. The method of claim 16, further comprising sending a key fob challenge request to confirm the presence of the key fob responsive to a change in presence identified using one or more presence detectors.
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18. The method of claim 11, wherein displaying the indicator includes displaying an indication of a frequency over which the interference signal is broadcast.
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19. The method of claim 11, wherein the interference signal includes an Amplitude Key Shift (ASK) signal with one of alternating bits, all one bits, or random bits broadcast over one or more of a 125 kilohertz (kHz) frequency band or a 134.5 kHz frequency band.
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20. A system comprising:
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a transceiver for communication with a key fob; a modem; and a processor, in communication with the transceiver and modem, programmed to receive a request to access the key fob from the modem, using the transceiver, temporarily discontinue broadcast of an interference signal to send a challenge request to the key fob and receive a challenge response, and send a response to the request including information based on the challenge response.
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21. The system of claim 20, wherein the processor is further programmed to:
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detect presence of the key fob; and during when the key fob is detected, broadcast the interference signal using the transceiver to prevent the key fob from responding to challenge requests.
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22. The system of claim 21, further comprising an indicator, wherein the processor is further programmed to:
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during when the key fob is detected, set the indicator to indicate presence of the broadcast; and during when the key fob is not detected, set the indicator to indicate lack of presence of the broadcast.
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23. The system of claim 20, wherein the request is sent from a mobile device, and the response to the request provides access rights of the key fob to the mobile device.
Specification