Radio frequency identification device with visual indicator
First Claim
1. An RFID device comprising:
- a chip;
an antenna operatively coupled to the chip; and
a display operatively coupled to the chip;
wherein the antenna is configured for receiving energy to power the chip;
wherein the antenna is configured to receive information signals to be passed on to the chip;
wherein the display includes a visual indicator that provides a visual indication of an operative state of the device; and
wherein the visual indicator selectively displays or obscures underlying printed material.
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Accused Products
Abstract
An RFID device includes a chip, an antenna operatively coupled to the chip, and a visual indicator operatively coupled to the chip. The visual indicator provides a visual indication of an operative state of the device. The visual indication may be human readable and/or machine readable, and may provide visual indication that is dependent on a change in an operative state of the device. The operative state that triggers the visual indication may include a state in which the chip has temporarily or permanently been rendered inoperative or disabled, that is, in which the chip no longer responds to, or otherwise interacts with, ordinary incoming RF signals such as from a device reader. The visual indicator may be included in a display that functions by any of a variety of suitable mechanisms, such as by use of electrochromic materials, thermochromic materials, liquid crystals, or chemically-reactive materials.
140 Citations
17 Claims
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1. An RFID device comprising:
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a chip; an antenna operatively coupled to the chip; and a display operatively coupled to the chip; wherein the antenna is configured for receiving energy to power the chip; wherein the antenna is configured to receive information signals to be passed on to the chip; wherein the display includes a visual indicator that provides a visual indication of an operative state of the device; and wherein the visual indicator selectively displays or obscures underlying printed material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An RFID device comprising:
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a chip; an antenna operatively coupled to the chip; and a display operatively coupled to the chip; wherein the antenna is configured for receiving energy to power the chip; wherein the antenna is configured to receive information signals to be passed on to the chip; wherein the display includes a visual indicator that provides a visual indication of an operative state of the device; and wherein the display involves mixing of chemically-reactive materials, such that the display is actuated by mixing the chemically-reactive materials to change color of at least part of the display. - View Dependent Claims (15, 16, 17)
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Specification