Bi-stable display tag
First Claim
1. An apparatus comprising:
- a display module;
a bi-stable display operatively coupled to the display module, the bi-stable display configured to display a first image at a first time;
a near-field communications (NFC) module including an NFC chip and a first coil operatively coupled to the display module, the NFC chip configured to be wirelessly powered by an external NFC power supply associated with an external NFC device via the first coil;
a harvester operatively coupled to the display module, the harvester including a second coil, the harvester configured to receive wireless power from the external NFC power supply via the second coil; and
a maximum power point tracking (MPPT) circuit operatively coupled to the display module,the display module configured to receive, at a second time after the first time and in response to a near-field interaction with the external NFC device, (1) power from the external NFC power supply via the second coil and the MPPT circuit based on an output of the MPPT circuit and (2) a first signal from the NFC module indicative of a second image different from the first image, the first signal based on a second signal received by the first coil from the external NFC device,the bi-stable display configured to display, in response to receiving a third signal indicative of an instruction from the display module, the second image at a third time after the second time.
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Accused Products
Abstract
In some embodiments an apparatus includes a display module and a bi-stable display. The bi-stable display is operatively coupled to the display module and is configured to display a first image at a first time. The display module is configured to be operatively coupled to a wireless module and configured to be wirelessly powered by an external wireless power supply. The display module is configured to receive, at a second time after the first time and in response to a wireless interaction with a wireless device, (1) power from the external wireless power supply and (2) a signal from the wireless module indicative of a second image different from the first image. The bi-stable display is configured to display, in response to a signal indicative of an instruction from the display module, the second image at a third time after the second time.
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Citations
13 Claims
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1. An apparatus comprising:
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a display module; a bi-stable display operatively coupled to the display module, the bi-stable display configured to display a first image at a first time; a near-field communications (NFC) module including an NFC chip and a first coil operatively coupled to the display module, the NFC chip configured to be wirelessly powered by an external NFC power supply associated with an external NFC device via the first coil; a harvester operatively coupled to the display module, the harvester including a second coil, the harvester configured to receive wireless power from the external NFC power supply via the second coil; and a maximum power point tracking (MPPT) circuit operatively coupled to the display module, the display module configured to receive, at a second time after the first time and in response to a near-field interaction with the external NFC device, (1) power from the external NFC power supply via the second coil and the MPPT circuit based on an output of the MPPT circuit and (2) a first signal from the NFC module indicative of a second image different from the first image, the first signal based on a second signal received by the first coil from the external NFC device, the bi-stable display configured to display, in response to receiving a third signal indicative of an instruction from the display module, the second image at a third time after the second time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus comprising:
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a display module; a bi-stable display operatively coupled to the display module, the bi-stable display configured to display a first image at a first time; a radio-frequency identification (RFID) module including an RFID chip and a first antenna operatively coupled to the display module, the RFID module configured to be wirelessly powered by an external RFID power supply associated with an RFID device via the first antenna; a harvester operatively coupled to the display module, the harvester including a second antenna, the harvester configured to receive wireless power from the external RFID power supply via the second antenna; and a maximum power point tracking (MPPT) circuit operatively coupled to the display module, the display module configured to receive, at a second time after the first time and in response to an RFID interaction with the RFID device, (1) power from the external RFID power supply via the second antenna and the MPPT circuit based on an output of the MPPT circuit and (2) a first signal from the RFID module indicative of a second image different from the first image, the first signal based on a second signal received by the first antenna from the RFID device, the bi-stable display configured to display, in response to receiving a third signal indicative of an instruction from the display module, the second image at a third time after the second time. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification