Transmitter direction identifier
First Claim
Patent Images
1. A transmitter direction identifying assembly comprising:
- a transmitter for sending a coded signal;
a receiver for receiving the coded signal from said transmitter;
a spatial differentiator for locating said transmitter relative to said receiver, said spatial differentiator creating a location signal identifying direction of said transmitter relative to said receiver; and
wherein said spatial differentiator includes a high comparator and a low comparator, said high comparator defining a high threshold and said low comparator defining a low threshold.
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Abstract
A transmitter direction identifier is disclosed in conjunction with an automotive keyless entry assembly. The transmitter direction identifier includes a transmitter for sending a coded signal; a receiver for receiving the coded signal from the transmitter; a spatial differentiator for identifying the direction of the transmitter relative to a receiver from the coded signal received from the transmitter, the spatial differentiator creating a location signal; and a control unit electrically connected to the spatial differentiator wherein the control unit converts the location signal into command signal for subsequent use.
52 Citations
18 Claims
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1. A transmitter direction identifying assembly comprising:
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a transmitter for sending a coded signal; a receiver for receiving the coded signal from said transmitter; a spatial differentiator for locating said transmitter relative to said receiver, said spatial differentiator creating a location signal identifying direction of said transmitter relative to said receiver; and wherein said spatial differentiator includes a high comparator and a low comparator, said high comparator defining a high threshold and said low comparator defining a low threshold.
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2. An automotive keyless entry assembly for accessing an occupant compartment of an automotive vehicle by unlocking a locking mechanism associated with one of a plurality of doors, said automotive keyless entry assembly comprising:
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a transmitter for sending a coded signal; a receiver for receiving the coded signal from said transmitter; a spatial differentiator for locating said transmitter relative to the automotive vehicle from said coded signal received from said receiver, said spatial differentiator creating a location signal; a control unit electrically connected to said spatial differentiator, said control unit converting said location signal into an unlock signal to unlock the locking mechanism associated with one of the plurality of doors closest to said transmitter; and wherein said spatial differentiator includes a high comparator and a low comparator, said high comparator defining a high threshold and said low comparator defining a low threshold. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A method of unlocking one of a plurality of doors to an occupant compartment of an automotive vehicle using a portable transmitter and a plurality of antennas spaced throughout the automotive vehicle, the method comprising the steps of:
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transmitting from the portable transmitter a coded signal, to the plurality of antennas; receiving the coded signals from the portable transmitter; receiving an antenna signal from each of the plurality of antennas representing the coded signal; measuring each of the antenna signals against a first threshold; measuring each of the antenna signals against a second threshold; locating the transmitter based on the antenna signals; and unlocking one of the plurality of doors closest to the transmitter. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification