RF POWER CONVERSION CIRCUITS & METHODS, BOTH FOR USE IN MOBILE DEVICES
First Claim
1. A portable wireless device used for event actuation, the portable wireless device comprising:
- a wireless power harnessing module that comprises an antenna tuned to a resonant frequency associated with a source of an energy field, the antenna being tuned with a capacitor placed in parallel with the antenna;
the antenna comprising several windings which when proximate the energy field, result in the wireless power harnessing module sourcing power;
a biometric data comparison module coupled to the wireless power harnessing module, the biometric data comparison configured to enter a powered state when receiving adequate power from the wireless power harnessing module, wherein in the powered on state, the biometric data comparison module is operatively configured to receive external biometric data from an external source and compare the external biometric date to stored biometric data; and
a communication module configured to provide information responsive to the comparison of the external biometric date and stored biometric data.
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Accused Products
Abstract
This patent application teaches and describes radio frequency (RF) power conversion circuits and methods both for use in mobile devices (such as smart cards). Embodiments of the present invention include wireless personal ID cards or dongle including a fingerprint sensor. A fingerprint matching system can reside on cards. Power provided to the fingerprint sensor and on board processer(s) can be provided by a wireless signal provided to the card. The card can include an RF power conversion circuit configured to receive wireless RF energy and convert the wireless energy for powering electronics on the card. Other aspects, embodiments, and features of the present invention are also claimed and described.
122 Citations
30 Claims
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1. A portable wireless device used for event actuation, the portable wireless device comprising:
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a wireless power harnessing module that comprises an antenna tuned to a resonant frequency associated with a source of an energy field, the antenna being tuned with a capacitor placed in parallel with the antenna; the antenna comprising several windings which when proximate the energy field, result in the wireless power harnessing module sourcing power; a biometric data comparison module coupled to the wireless power harnessing module, the biometric data comparison configured to enter a powered state when receiving adequate power from the wireless power harnessing module, wherein in the powered on state, the biometric data comparison module is operatively configured to receive external biometric data from an external source and compare the external biometric date to stored biometric data; and a communication module configured to provide information responsive to the comparison of the external biometric date and stored biometric data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless access control device, the device comprising:
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a power circuit configured to have a default non-energized state and an energized state, the power circuit configured to receive energy from an energy field to enter the energized state so that the power circuit can source electrical power, wherein the power circuit is finely tuned to a carrier frequency of the energy field; and a processor coupled to the power circuit, the processor configured to receive electrical power when the power circuit enters the energized state, the processor further configured to receive data from a sensor, and in response to the received data, the processor further configured to generate a signal corresponding to an access level. - View Dependent Claims (12, 13, 14, 15)
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16. A portable wireless device capable of harnessing wireless energy comprising:
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an antenna and a tuning capacitor connected in parallel to form a tank circuit, the tank circuit being finely tuned to a resonant frequency associated with a carrier base frequency of source of an energy field; the antenna comprising several windings which when proximate the energy field, result in the antenna sourcing electrical current and voltage; the antenna further comprising a plurality of segments set off by a plurality of taps disposed at various places along the length of the antenna, wherein one of the segments can be configured to receive and transmit data with the energy field simultaneously with receiving energy from the energy field; and a rectifier circuit connected to a first tap and a second tap of the antenna, the first tap being located on an inner antenna winding and wherein the second tap of the antenna is in electrical communication with a common ground, the rectifier circuit configured to convert the sourced electrical current and voltage to a DC energy source. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method of harnessing electrical energy from an energy field while simultaneously communicating data with the energy field, the method comprising:
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configuring a portable device with a tank circuit tuned to a center frequency of an energy field, wherein an inductor of the tank circuit can interact with the energy field to convert wireless energy into electrical energy so that the inductor can source electrical power; and configuring a processor located on the portable device to receive electrical power sourced by the inductor and configuring the processor to receive and provide data for communication with a device emitting the energy field, wherein data can be received and transmitted using coils of the inductor while the inductor is sourcing energy. - View Dependent Claims (23, 24, 25)
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26. A computer program product embodied in a computer-readable medium for execution by a processor or engine, the computer program product comprising an algorithm to manage activated carried out by a processor in managing power and testing biometric data, the method comprising:
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detecting an appropriate power level being sourced by an antenna that is finely tuned to resonate at a center carrier frequency of an energy field, wherein the power level is provided in electrical form after the antenna converts wireless energy to electrical energy; communicating with a biometric sensor to determine if the sensor detects presence of biometric data and has captured external biometric data; testing received biometric data against stored biometric data to determine if the captured external biometric data matches the stored biometric data; and issuing communication signals for wireless transmission from the antenna to another component, the communication signals comprising data about results of the biometric data test. - View Dependent Claims (27, 28, 29, 30)
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Specification