Use of a tag and reader antenna for a simulated theremin effect
First Claim
1. A reader apparatus comprising:
- an antenna configured to;
transmit electromagnetic radiation having a power level, andreceive backscatter electromagnetic radiation from a sensing device configured to take measurements while being worn;
a control unit configured to;
analyze the backscatter electromagnetic radiation to determine a link quality between the sensing device that caused the backscatter electromagnetic radiation and the reader, wherein the link quality is determined based on an indication of the supply voltage in the sensing device; and
generate a signal based on the determined link quality; and
an audio unit configured to generate an audio output based on the generated signal.
4 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure provides methods and apparatuses for providing an audible feedback based on a proximity or a link quality between an external reader and a tag. The external reader transmits power to the tag with a radio frequency electromagnetic signal. The tag may rectify the radio frequency electromagnetic signal and create a rectified voltage. This rectified voltage may be used to power various components of the tag. Once it receives power from the reader, the tag may communicate information back to the external reader. The information communicated back to the reader is communicated by modulating an antenna impedance of the tag. By modulating the impedance, the tag will backscatter radiation transmitted by the reader. The reader is able to create an audio output based on determining the proximity or link quality from the reader to the tag based on the backscatter radiation it receives from the tag.
29 Citations
18 Claims
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1. A reader apparatus comprising:
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an antenna configured to; transmit electromagnetic radiation having a power level, and receive backscatter electromagnetic radiation from a sensing device configured to take measurements while being worn; a control unit configured to; analyze the backscatter electromagnetic radiation to determine a link quality between the sensing device that caused the backscatter electromagnetic radiation and the reader, wherein the link quality is determined based on an indication of the supply voltage in the sensing device; and generate a signal based on the determined link quality; and an audio unit configured to generate an audio output based on the generated signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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transmitting electromagnetic radiation having a power level via an antenna; receiving backscatter electromagnetic radiation from a sensing device configured to take measurements while being worn via the antenna; analyzing the backscatter electromagnetic radiation to determine a link quality between the device that caused the backscatter electromagnetic radiation and the reader, wherein the link quality is determined based on an indication of the supply voltage in the sensing device; and generating an audio signal based on-the link quality. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An article of manufacture including a non-transitory computer-readable medium having stored thereon instructions that, when executed by a processor in a radio-frequency system, cause the radio-frequency system to perform operations comprising:
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transmitting electromagnetic radiation having a power level via an antenna; receiving backscatter electromagnetic radiation from a sensing device configured to take measurements while being worn via the antenna; analyzing the backscatter electromagnetic radiation to determine a link quality between the device that caused the backscatter electromagnetic radiation and the reader, wherein the link quality is determined based on an indication of the supply voltage in the sensing device; and generating an audio signal based on the link quality. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification