System for aligning a handheld RFID reader
First Claim
1. A reader apparatus comprising:
- an antenna configured to;
transmit electromagnetic radiation, andreceive backscatter electromagnetic radiation from an eye-worn device;
a control unit configured to;
analyze the received backscatter electromagnetic radiation to determine an alignment between the eye-worn device that caused the backscatter electromagnetic radiation and the reader; and
generate a signal based on the determined alignment; and
an output unit configured to generate a visual output visible to an eye having the eye-worn device that indicates the determined alignment between the eye-worn device and the reader based on the generated signal.
6 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure provides methods and apparatuses for providing a visible feedback based on an alignment 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 a visual output based on determining the alignment or link quality from the reader to the tag based on the backscatter radiation it receives from the tag.
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Citations
20 Claims
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1. A reader apparatus comprising:
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an antenna configured to; transmit electromagnetic radiation, and receive backscatter electromagnetic radiation from an eye-worn device; a control unit configured to; analyze the received backscatter electromagnetic radiation to determine an alignment between the eye-worn device that caused the backscatter electromagnetic radiation and the reader; and generate a signal based on the determined alignment; and an output unit configured to generate a visual output visible to an eye having the eye-worn device that indicates the determined alignment between the eye-worn device and the reader based on the generated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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transmitting electromagnetic radiation via an antenna of a reader; receiving backscatter electromagnetic radiation from an eye-worn device via the antenna of the reader; analyzing the received backscatter electromagnetic radiation, via a processor, to determine an alignment between the eye-worn device that caused the backscatter electromagnetic radiation and the reader, based on the backscatter electromagnetic radiation; and generating a visual output visible to an eye having the eye-worn device that indicates the determined alignment between the eye-worn device and the reader via an output component based on the determined alignment. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An article of manufacture including a non-transitory computer-readable medium having stored thereon instructions that, when executed by a processor in a system, cause the system to perform operations comprising:
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transmitting electromagnetic radiation via an antenna of a reader; receiving backscatter electromagnetic radiation from an eye-worn device via the antenna of the reader; analyzing the received backscatter electromagnetic radiation, via a processor, to determine an alignment between the eye-worn device that caused the backscatter electromagnetic radiation and the reader, based on the backscatter electromagnetic radiation; and generating a visual output visible to an eye having the eye-worn device that indicates the determined alignment between the eye-worn device and the reader via an output component based on the determined alignment. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification