Wireless switching system
First Claim
Patent Images
1. A switching system comprising:
- a resonant circuit having a resonant frequency;
a central unit generating a field including said resonant frequency, said resonant circuit absorbing energy at said resonant frequency, wherein said central unit is arranged to measure energy loss at said resonant frequency to determine the presence of said resonant circuit in said field;
a switch connected to the resonant circuit; and
a function circuit activated by said central unit upon determination that said resonant circuit is in said field, wherein the resonant circuit is responsive to the switch to selectively control when the resonant circuit absorbs energy at the resonant frequency.
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Abstract
A wireless switching system includes a central transmitter unit which generates a plurality of electromagnetic frequencies. A plurality of switches within the electromagnetic field each selectively open and close a resonant circuit having a unique resonant frequency. When the user activated switch closes its associated resonant circuit, the resonant circuit consumes energy from the electromagnetic field at its resonant frequency. The central transmitter unit detects this energy consumption and the frequency at which the energy consumption occured and consequently activates a vehicle function associated with the closed user activated switch.
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Citations
10 Claims
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1. A switching system comprising:
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a resonant circuit having a resonant frequency; a central unit generating a field including said resonant frequency, said resonant circuit absorbing energy at said resonant frequency, wherein said central unit is arranged to measure energy loss at said resonant frequency to determine the presence of said resonant circuit in said field; a switch connected to the resonant circuit; and a function circuit activated by said central unit upon determination that said resonant circuit is in said field, wherein the resonant circuit is responsive to the switch to selectively control when the resonant circuit absorbs energy at the resonant frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle comprising:
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a resonant circuit having a resonant frequency, said resonant circuit associated with said vehicle function; a central unit generating a field in said vehicle, said field including said resonant frequency, said resonant circuit absorbing energy at said resonant frequency; said central unit measuring energy loss at said resonant frequency to determine the presence of said resonant circuit in said field; and a function circuit operating a vehicle function, said function circuit activated by said central unit upon determination that said resonant circuit is in said field. - View Dependent Claims (9)
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10. A method for selectively activating a function including the steps of:
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generating a field including a first frequency; installing a resonant circuit in said field, said circuit having a resonant frequency equal to said first frequency when said resonant circuit is closed; associating said resonant circuit with a function circuit; selectively closing said resonant circuit to cause an energy loss at said first frequency; detecting said energy loss at said first frequency; and activating the associated function circuit upon detecting said energy loss.
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Specification