Radio-frequency identification (rfid) capacitance liquid measurement tag system
US-2024311609-A1 · Sep 19, 2024 · US
Radio frequency identification tags adapted for localization and state indication
US8937530B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8937530-B2 |
| Application number | US-201213349591-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 13, 2012 |
| Priority date | Dec 31, 2007 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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An embodiment of the present invention provides a radio frequency identification (RFID) tag, comprising at least one light emitting diode (LED) that is controlled by the RFID's logic and powered by the RFID's power harvesting circuit, wherein the RFID tag is capable of being interrogated by an RFID reader and reporting its unique identification number by RF backscatter and/or controlling the illumination state of the at least one LED.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus, comprising: a wirelessly-powered radio frequency identification (RFID) tag with at least one light emitting diode (LED) that is powered by said RFID's power harvesting circuit in response to a tag specific illumination command; controllers to control the illumination state of said at least one LED and to automatically localize the RFID tag associated with a blinking LED by performing the action of filtering to accentuate intensity discontinui…
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- G06K19/0723Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US8937530B2 cover?
- An embodiment of the present invention provides a radio frequency identification (RFID) tag, comprising at least one light emitting diode (LED) that is controlled by the RFID's logic and powered by the RFID's power harvesting circuit, wherein the RFID tag is capable of being interrogated by an RFID reader and reporting its unique identification number by RF backscatter and/or controlling the il…
- Who is the assignee on this patent?
- Smith Joshua R, Yeager Daniel, Rahimi Ali, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G06K19/0723. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).