METHOD OF INTERFACING A LC SENSOR AND RELATED SYSTEM
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Accused Products
Abstract
A method of interfacing a LC sensor with a control unit is provided. The control unit may include first and second contacts, where the LC sensor is connected between the first and the second contact. A capacitor is connected between the first contact and a ground. To start the oscillation of the LC sensor, the method may include during a first phase, connecting the first contact to a supply voltage and placing the second contact in a high impedance state such that the capacitor is charged through the supply voltage. During a second phase, the first contact may be placed in a high impedance state, and the second contact connected to the ground such that the capacitor transfers charge towards the LC sensor. During a third phase, the first contact and the second contact may be placed in a high impedance state so the LC sensor is able to oscillate.
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Citations
45 Claims
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1-12. -12. (canceled)
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13. A method of interfacing an LC sensor with a controller, the controller comprising first and second contacts with the LC sensor being coupled between the first and said second contacts of the controller and a capacitor being coupled between the first contact and a reference voltage, the method comprising:
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during a first phase, connecting the first contact to a supply voltage and placing the second contact in a high impedance state so that the capacitor is charged through the supply voltage; during a second phase, placing the first contact in the high impedance state and connecting the second contact to the reference voltage so that the capacitor transfers charge to the LC sensor; and during a third phase, placing the first contact and the second contact in the high impedance state so that the LC sensor oscillates. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A system comprising:
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an LC sensor; a controller comprising first and second contacts with the LC sensor being coupled between the first and said second contacts of the controller; and a capacitor coupled between the first contact and a reference voltage; said controller being configured to during a first phase, connect the first contact to a supply voltage and place the second contact in a high impedance state so that the capacitor is charged through the supply voltage, during a second phase, place the first contact in the high impedance state and connect the second contact to the reference voltage so that the capacitor transfers charge to the LC sensor, and during a third phase, place the first contact and the second contact in the high impedance state so that the LC sensor oscillates. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A controller for use with an LC sensor and a capacitor, the controller comprising:
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first and second contacts, wherein the LC sensor is to be coupled between the first and said second contacts, and wherein the capacitor is to be coupled between the first contact and a reference voltage; and a processor configured to during a first phase, connect the first contact to a supply voltage and place the second contact in a high impedance state so that the capacitor is charged through the supply voltage, during a second phase, place the first contact in the high impedance state and connect the second contact to the reference voltage so that the capacitor transfers charge to the LC sensor, and during a third phase, place the first contact and the second contact in the high impedance state so that the LC sensor oscillates. - View Dependent Claims (34, 35, 36, 37)
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38. A non-transitory computer-readable medium for a controller comprising first and second contacts with an LC sensor being coupled between the first and said second contacts of the controller and a capacitor being coupled between the first contact and a reference voltage, the non-transitory computer readable medium having computer executable instructions for causing the controller to perform steps comprising:
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during a first phase, connecting the first contact to a supply voltage and placing the second contact in a high impedance state so that the capacitor is charged through the supply voltage; during a second phase, placing the first contact in the high impedance state and connecting the second contact to the reference voltage so that the capacitor transfers charge to the LC sensor; and during a third phase, placing the first contact and the second contact in the high impedance state so that the LC sensor oscillates. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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Specification