Patent · US Active

Dynamic power levels in NFC card communications

US10516447B1 · kind B1 · utility

5Cited by
250References
19Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 17, 2019
Grant dateDec 24, 2019
Priority date—
Expiry dateJun 17, 2039

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04B5/45
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

Various embodiments are directed to dynamically and temporarily adjusting power to an NFC reader of a computing device from a first power level to a second power level based on a feedback mechanism between a contactless card and the computing device. The contactless card may provide a message containing a checksum. The computing device may receive the message and calculate a checksum based on the received message. By comparing these two checksums, it may be determined whether the entire message has been correctly received. If not, the power to the NFC reader may be temporarily increased to allow better communication between the contactless card and the computing device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.