Near field communication device and method for detecting near field communication card

一种近场通信、设备的技术，应用在近场传输系统、使用收发信机近场传输系统、射频识别系统中近场传输系统等方向，能够解决错误指示、NFC读取器/写入器设备高功率消耗等问题

Active Publication Date: 2022-05-06
INTEL CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may result in higher power consumption of the NFC reader / writer device
[0008] Another problem could be the error indicating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Near field communication device and method for detecting near field communication card
  • Near field communication device and method for detecting near field communication card
  • Near field communication device and method for detecting near field communication card

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] This document describes an architecture, platform, and method for identifying the presence of a Near Field Communication (NFC) card / tag using a uniquely coupled impedance signature by an NFC reader / writer device. The described technique detects the change in impedance when the NFC card / tag is brought near the NFC reader / writer antenna, and does not require power to be supplied to the NFC card / tag. False indications can be avoided because other metallic or magnetic objects do not create uniquely coupled impedance signatures.

[0020] figure 1 is an example scenario 100 illustrating a near field communication (NFC) reader / writer device 102 communicating with one or more NFC cards / tags 104. The NFC card / tag 104 can be passive or active (ie, unpowered or powered). The NFC reader / writer device 102 includes an antenna 106, which may be part of, or connected to, an NFC module (not shown).

[0021] NFC cards / tags 104 include respective antennas 108 . The antenna 106 of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This application relates to a card detection architecture for near field communication. This document describes an architecture, platform and method for detecting a Near Field Communication (NFC) card / tag by an NFC-enabled device using a coupled impedance signature unique to the NFC card / tag and the NFC-enabled device.

Description

[0001] Instructions for Divisional Application [0002] This application is a divisional application of an invention patent application with the filing date of November 16, 2015 and the application number of 201510784715.5, entitled "Card Detection Architecture for Near Field Communication". technical field [0003] This application generally relates to card detection architectures for near field communications. Background technique [0004] In systems and devices implementing Near Field Communication (NFC), an NFC reader / writer device can communicate with several NFC-enabled cards / tags. Such NFC cards / tags may be passive, meaning they do not have a power source. In a typical implementation, an NFC reader / writer device attempts to investigate or determine which NFC cards / tags are located in its environment. [0005] An antenna of an NFC reader / writer device may emit a radio frequency (RF) field. When a passive NFC card / tag is brought into the RF field of an NFC reader / wr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): H04B5/00H04W4/80H01Q7/00H01Q1/22G06K7/10H04B5/48
CPCH04W4/80G06K7/10118H04B5/70G06K7/10297G06K19/025G06K19/07758G06K19/07783H04B2001/0416G06K19/07781H01Q1/2216H01Q7/005G06K7/00G06K19/07779H03F1/0233H03F3/189H03F3/20H04B1/0458H04B5/77H04B5/24H04B5/26H04B5/266H04B5/48H04B5/79H04B5/72
Inventor尼兰詹·卡兰笛卡尔蒂莫西·考克斯
OwnerINTEL CORP