Method for switching working modes of dual interface smart card

A dual-interface smart card and working mode technology, which is applied to record carriers used in machines, instruments, computer components, etc., can solve problems such as card failure

Inactive Publication Date: 2011-06-15
SHANGHAI HUAHONG INTEGRATED CIRCUIT
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there are also some defects in the contactless card: when the card is bent excessively during use, it is easy to fail due to the breakage of the internal coil solder joints of the card
[0007] Smart cards with two interfaces have their own working conditions and operating environment requirements in the contact working mode, non-contact working mode...

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
  • Method for switching working modes of dual interface smart card
  • Method for switching working modes of dual interface smart card

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] specific implementation plan

[0019] combined with figure 1 A detailed description of a dual-interface smart card working mode switching method proposed by the present invention:

[0020] The dual-interface smart card system does not set a default working mode during the initial power-on reset, and obtains the working mode of the dual-interface card system according to the received working mode indication signal after the power-on reset is released. When only the contact power supply is added, the low-level reset of the contacts of the contact interface is valid, the system uses the contact clock, and the system enters the contact working mode, as shown in T3 and T6 in the figure. In the current contact working mode, when a non-contact power supply is added, the system does not reset, and the clock is optional, it enters the dual-interface working mode, as shown in T2 on the way. In the current dual-interface working mode, when the system detects that the contact p...

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

The invention provides a method for switching working modes of a dual interface smart card. In the method, the dual interface card is mutually switched among three application modes, namely a contact type mode, a non-contact type mode and a dual interface mode which are unique to the dual interface card, under working conditions in different modes. A power-on reset mode and a clock switching mode of a system are set according to a working mode in which the initial default is not set, so that the method for switching from the contact type working mode to the dual interface working mode and then from the dual interface working mode to the non-contact type working mode is realized, and a switching process from the initial non-contact type working mode to the dual interface working mode and then the contact type working mode is realized. By the method, seamless transition of the dual interface smart card in various working modes according to an actual application environment requirement can be realized, and the normal work in any mode can be guaranteed.

Description

technical field [0001] The invention relates to a dual-interface smart card technology, in particular to a method for switching working modes of a dual-interface smart card. Background technique [0002] Nowadays, contact smart IC cards (hereinafter referred to as "contact cards") are widely used in people's daily life, such as SIM cards. With the popularization and application of contact cards, there have been many problems in the application. For example, frequent plugging and unplugging of contact cards on the reading and writing equipment will cause wear and tear, which will lead to poor contact of the cards, which will cause data transmission errors, and contact cards and readers Wear between writing devices also greatly shortens the life of the card and the reading and writing device. In addition, the communication rate of the contact card is low, coupled with the delay in inserting and removing the card, it will take a long time to read the card. [0003] There is a...

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
IPC IPC(8): G06K19/07
Inventor 舒海军
Owner SHANGHAI HUAHONG INTEGRATED CIRCUIT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap