Circuits and methods for field-based communication
First Claim
1. A field-based communication circuit comprising:
- a receiver circuit configured to receive a field input signal from a field source;
a detection circuit communicatively associated with the receiver circuit, the detection circuit comprising;
a voltage detection circuit communicatively associated with the receiver circuit, the voltage detection circuit configured to detect a voltage signal associated with the field input signal;
a current detection circuit communicatively associated with the receiver circuit, the current detection circuit configured to detect a current signal associated with the field input signal; and
a control circuit communicatively associated with the voltage detection circuit and the current detection circuit, the control circuit configured to estimate a first signal magnitude and a second signal magnitude corresponding to the voltage signal and the current signal, respectively, compare the first signal magnitude and the second signal magnitude with at least a first predetermined threshold level to thereby conduct a signal comparison, and trigger a selection of one of the voltage detection circuit and the current detection circuit based on the signal comparison such that the selection facilitates a demodulation of one of the voltage signal and the current signal.
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Accused Products
Abstract
Several circuits and methods for field-based communication are provided. In an embodiment, a field-based communication circuit includes a receiver circuit, a detection circuit and a control circuit. The receiver circuit is configured to receive a field input signal from a field source. The detection circuit includes a voltage detection circuit and a current detection circuit configured to detect a voltage signal and a current signal, respectively associated with the field input signal. The control circuit is configured to trigger a selection of one of the voltage detection circuit and the current detection circuit based on a detection of a signal magnitude of one of the voltage signal and the current signal relative to at least a first predetermined threshold level, wherein the selection of one of the voltage detection circuit and the current detection circuit facilitates a demodulation of one of the voltage signal and the current signal.
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Citations
20 Claims
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1. A field-based communication circuit comprising:
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a receiver circuit configured to receive a field input signal from a field source; a detection circuit communicatively associated with the receiver circuit, the detection circuit comprising; a voltage detection circuit communicatively associated with the receiver circuit, the voltage detection circuit configured to detect a voltage signal associated with the field input signal; a current detection circuit communicatively associated with the receiver circuit, the current detection circuit configured to detect a current signal associated with the field input signal; and a control circuit communicatively associated with the voltage detection circuit and the current detection circuit, the control circuit configured to estimate a first signal magnitude and a second signal magnitude corresponding to the voltage signal and the current signal, respectively, compare the first signal magnitude and the second signal magnitude with at least a first predetermined threshold level to thereby conduct a signal comparison, and trigger a selection of one of the voltage detection circuit and the current detection circuit based on the signal comparison such that the selection facilitates a demodulation of one of the voltage signal and the current signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of field-based communication comprising:
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accessing a receiver circuit, a voltage detection circuit, a current detection circuit, and a control circuit, each of the voltage detection circuit and the current detection circuit being communicatively associated with both of the receiver circuit and the control circuit; receiving a field input signal from a field source at the receiver circuit; performing, at the control circuit; actuating one of the current and voltage detection circuits to thereby determine one of a current signal and a voltage signal, respectively, the determined signal being associated with the field input signal; estimating a signal magnitude of the determined signal; comparing the signal magnitude with a first predetermined threshold level; and triggering a selection of one of; the voltage detection circuit based on a determination that the signal magnitude is one of lesser than and equal to the first predetermined threshold level, and the current detection circuit based on a determination that the signal magnitude is greater than the first predetermined threshold level. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A field-based communication circuit comprising:
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a receiver circuit configured to receive a field input signal from a field source; a detection circuit communicatively associated with the receiver circuit, the detection circuit comprising; a voltage detection circuit communicatively associated with the receiver circuit, the voltage detection circuit configured to detect a voltage signal associated with the field input signal; and a current detection circuit communicatively associated with the receiver circuit, the current detection circuit configured to detect a current signal associated with the field input signal, the current detection circuit comprising a current control circuit configured to implement an attenuation of the detected current signal; and a control circuit communicatively associated with the voltage detection circuit and the current detection circuit, the control circuit configured to; estimate a first signal magnitude and a second signal magnitude corresponding to the voltage signal and the current signal, respectively, compare the first signal magnitude and the second signal magnitude with at least a first predetermined threshold level to thereby conduct a signal comparison, trigger a selection of one of the voltage detection circuit and the current detection circuit based on the signal comparison such that the selection facilitates a demodulation of one of the voltage signal and the current signal, and vary the attenuation of the detected current signal at the current control circuit communicatively associated with the detection circuit and the control circuit, based on a first reference database, and based on a triggering selection of the current detection circuit, the first reference database comprising a plurality of attenuation values corresponding to a plurality of signal magnitude values, respectively, of the current signal. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification