Remote keyless entry transmitter fob with RF analyzer
First Claim
1. A portable remote keyless entry fob comprising:
- a plurality of control elements disposed on said fob for manual activation by a user;
a display for displaying information to said user;
an RKE transmitter for wirelessly transmitting RKE messages from said fob to a vehicle-mounted receiver;
a wideband receiver capable of receiving RF signals broadcast by wireless devices nearby said fob and generating a received signal strength indicator (RSSI) signal in proportion to said RF signals;
and a controller coupled to said plurality of control elements, said display, said RKE transmitter, and said wideband receiver wherein said controller has an RKE mode for providing a plurality of remote entry command functions in response to activation of respective ones of said control elements, wherein said controller has a detector mode initiated by a predetermined one of said control elements for detecting presence of a wireless device using a comparison responsive to predetermined signal patterns and said RSSI signal, wherein said controller generates an indication on said display when said wireless device is detected, and wherein said controller returns to said RKE mode from said detector mode in response to activation of a selected one of said control elements.
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Accused Products
Abstract
A portable remote keyless entry fob has a plurality of control elements disposed on the fob for manual activation by a user. A display is provided for displaying information to the user. An RKE transmitter wirelessly transmits RKE messages from the fob to a vehicle-mounted receiver. A wideband receiver receives RF signals broadcast by wireless devices nearby the fob and generates a received signal strength indicator (RSSI) signal in proportion to the RF signals. A controller is coupled to the plurality of control elements, the display, the RKE transmitter, and the wideband receiver wherein the controller has an RKE mode for providing a plurality of remote entry command functions. The controller has a detector mode for detecting presence of a wireless device using a comparison responsive to predetermined signal patterns and the RSSI signal. The controller generates an indication on the display when the wireless device is detected.
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Citations
20 Claims
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1. A portable remote keyless entry fob comprising:
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a plurality of control elements disposed on said fob for manual activation by a user;
a display for displaying information to said user;
an RKE transmitter for wirelessly transmitting RKE messages from said fob to a vehicle-mounted receiver;
a wideband receiver capable of receiving RF signals broadcast by wireless devices nearby said fob and generating a received signal strength indicator (RSSI) signal in proportion to said RF signals;
and a controller coupled to said plurality of control elements, said display, said RKE transmitter, and said wideband receiver wherein said controller has an RKE mode for providing a plurality of remote entry command functions in response to activation of respective ones of said control elements, wherein said controller has a detector mode initiated by a predetermined one of said control elements for detecting presence of a wireless device using a comparison responsive to predetermined signal patterns and said RSSI signal, wherein said controller generates an indication on said display when said wireless device is detected, and wherein said controller returns to said RKE mode from said detector mode in response to activation of a selected one of said control elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating a portable key fob associated with a user'"'"'s vehicle, said method comprising the steps of:
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operating in an RKE mode comprising remote entry command functions for transmitting respective RKE wireless messages to said user'"'"'s vehicle in response to manual activation of respective control elements contained in said key fob;
entering a detector mode in response to activation of a predetermined control element, wherein said detector mode comprises analyzing a broadband RF signal received by said key fob to detect the presence of predetermined wireless devices; and
returning to said RKE mode in response to manual activation of a selected control element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification