Electromagnetic sensing and detection of ingestible event markers
First Claim
1. An electronic device comprising:
- a control device;
a driver circuit coupled to the control device, the driver circuit configured to alter conductance and comprising;
cross-coupled transistors; and
a capacitor coupled between drains of the cross-coupled transistors;
a partial power source coupled to the control device, wherein the partial power source is configured to provide a voltage potential difference to the control device and the driver circuit as a result of the partial power source being in contact with a conductive fluid, the partial power source comprising;
a first material electrically coupled to the control device; and
a second material electrically coupled to the control device and electrically isolated from the first material; and
an inductor coupled to the driver circuit, wherein the driver circuit is configured to develop a current through the inductor, wherein the inductor is coupled between the drains of the cross-coupled transistors, and wherein a magnitude of the current developed through the inductor is varied to produce an encoded signal that is remotely detectable by a receiver.
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Accused Products
Abstract
Provided is an electronic device having a control device, a driver circuit coupled to the control device. The driver circuit is configured to alter conductance. A partial power source is coupled to the control device and is configured to provide a voltage potential difference to the control device and the driver circuit as a result of the partial power source being in contact with a conductive fluid. The partial power source includes a first material electrically coupled to the control device and a second material electrically coupled to the control device and electrically isolated from the first material. An inductor is coupled to the driver circuit. The driver circuit is configured to develop a current through the inductor. The magnitude of the current developed through the inductor is varied to produce an encoded signal that is remotely detectable by a receiver. Receivers to receive and decode also are disclosed.
1286 Citations
24 Claims
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1. An electronic device comprising:
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a control device; a driver circuit coupled to the control device, the driver circuit configured to alter conductance and comprising; cross-coupled transistors; and a capacitor coupled between drains of the cross-coupled transistors; a partial power source coupled to the control device, wherein the partial power source is configured to provide a voltage potential difference to the control device and the driver circuit as a result of the partial power source being in contact with a conductive fluid, the partial power source comprising; a first material electrically coupled to the control device; and a second material electrically coupled to the control device and electrically isolated from the first material; and an inductor coupled to the driver circuit, wherein the driver circuit is configured to develop a current through the inductor, wherein the inductor is coupled between the drains of the cross-coupled transistors, and wherein a magnitude of the current developed through the inductor is varied to produce an encoded signal that is remotely detectable by a receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic device comprising:
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a control device; a driver circuit coupled to the control device, the driver circuit configured to alter conductance; a partial power source coupled to the control device, wherein the partial power source is configured to provide a voltage potential difference to the control device and the driver circuit as a result of the partial power source being in contact with a conductive fluid, the partial power source comprising; a first material electrically coupled to the control device; and a second material electrically coupled to the control device and electrically isolated from the first material; an inductor coupled to the driver circuit, wherein the driver circuit is configured to develop a current through the inductor, and wherein a magnitude of the current developed through the inductor is varied to produce an encoded signal that is remotely detectable by a receiver; and an electronic switch, wherein the electronic switch comprises first and second terminals and a control terminal, and wherein the control terminal is operatively coupled to the driver circuit, the first terminal is coupled to the inductor, and the second terminal is coupled to the second material, and wherein the inductor is coupled between the first material and the first terminal of the electronic switch, wherein the driver circuit is further configured to alter the conductance of the electronic switch between the first and second materials such that the current is developed through the inductor. - View Dependent Claims (14, 15)
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16. An electronic device comprising:
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a control device; a driver circuit coupled to the control device, the driver circuit configured to alter conductance; a partial power source coupled to the control device, wherein the partial power source is configured to provide a voltage potential difference to the control device and the driver circuit as a result of the partial power source being in contact with a conductive fluid, the partial power source comprising; a first material electrically coupled to the control device; and a second material electrically coupled to the control device and electrically isolated from the first material; an inductor coupled to the driver circuit, wherein the driver circuit is configured to develop a current through the inductor, wherein a magnitude of the current developed through the inductor is varied to produce an encoded signal that is remotely detectable by a receiver, and wherein the inductor comprises at least two inductive elements formed on separate insulating substructures of a semiconductor integrated circuit. - View Dependent Claims (17, 18, 19)
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20. An electronic device comprising:
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a control device; a driver circuit coupled to the control device, the driver circuit configured to alter conductance; a partial power source coupled to the control device, wherein the partial power source is configured to provide a voltage potential difference to the control device and the driver circuit as a result of the partial power source being in contact with a conductive fluid, the partial power source comprising; a first material electrically coupled to the control device; and a second material electrically coupled to the control device and electrically isolated from the first material; an inductor coupled to the driver circuit, wherein the driver circuit is configured to develop a current through the inductor, and wherein a magnitude of the current developed through the inductor is varied to produce an encoded signal that is remotely detectable by a receiver; a voltage doubler circuit coupled to the partial power source; a pulse generator circuit coupled to the voltage doubler circuit; and an inductor discharge circuit coupled to the pulse generator circuit. - View Dependent Claims (21, 22, 23, 24)
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Specification