A control circuit and smart card for nfc near field communication

A control circuit and near-field communication technology, which is applied in the field of NFC communication, can solve problems such as waste, battery power consumption, and product service life shortening, and achieve the effects of reducing components, simplifying hardware circuits, and reducing costs

CN107911147BActive Publication Date: 2020-05-19SHENZHEN EXCELSECU DATA TECH
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-05-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a control circuit and a smart card for NFC near field communication. The control circuit includes at least one antenna, a voltage processing module, a control module, a strobe switch module and a preset number of radio frequency communication modules. The antenna is connected to the NFC from the outside. The device obtains wireless power and outputs alternating current to the voltage processing module. The voltage processing module processes the alternating current into a DC power supply voltage to supply power to the control module; the control module outputs a switch control signal to the strobe switch module, and the strobe switch module is turned on according to the switch control signal. Or disconnect the corresponding radio frequency communication module from the corresponding antenna; when the radio frequency communication module and the antenna are connected, the radio frequency communication module performs radio frequency communication with the NFC device through the antenna. The invention solves the problem of internal power collection of the smart card, without the need for additional batteries, and simplifies the hardware circuit. The smart card also has multiple radio frequency communication functions, can switch between multiple radio frequency communication modes, and can be applied to various occasions.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of NFC communication, in particular to a control circuit and a smart card for NFC near-field communication. Background technique

[0002] Near Field Communication (NFC) is a short-range high-frequency radio technology. NFC near-field communication technology is evolved from the integration of non-contact radio frequency identification (RFID) and interconnection technology. It is combined on a single chip. Proximity card readers, proximity cards and peer-to-peer functions enable identification and data exchange with compatible devices within a short distance. NFC near field communication technology is usually used in smart cards.

[0003] In the existing NFC communication products, the battery power supply is generally used to solve the problem of power acquisition, which causes the loss and waste of battery power and shortens the service life of the product. Contents of the invention

[0004] The embodim...

Examples

Embodiment Construction

[0025] In order to enable those skilled in the art to better understand this solution, the technical solution in this solution embodiment will be clearly described below in conjunction with the accompanying drawings in this solution embodiment. Obviously, the described embodiment is a part of this solution Examples, but not all examples. Based on the embodiments in this solution, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this solution.

[0026] The term "comprising" and any other variants in the description and claims of this solution and the above drawings mean "including but not limited to", and are intended to cover non-exclusive inclusion. In addition, the terms "first" and "second", etc. are used to distinguish different objects, not to describe a specific order.

[0027] The realization of the present invention is described in detail below in conjunction with specific accompa...