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Method for reading and writing non-contact intelligent card data

A non-contact, data reading and writing technology, applied in the direction of memory address/allocation/relocation, sensing details, etc.

Inactive Publication Date: 2007-06-27
SHANGHAI HUAHONG INTEGRATED CIRCUIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a period of use, the number of write operations in this dynamic information area exceeds the service life, causing an operation error in this area, and the card will be considered unusable and discarded.

Method used

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  • Method for reading and writing non-contact intelligent card data
  • Method for reading and writing non-contact intelligent card data
  • Method for reading and writing non-contact intelligent card data

Examples

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Embodiment Construction

[0020] As shown in Figure 1, in the method for reading and writing data of the non-contact smart card of the present invention, the memory in the card is functionally divided into a basic information area, a configuration information area, a dynamic information area, and multiple backup dynamic information areas. The basic information area stores card issuing information, manufacturer information and other information that basically only needs to be read. The configuration information area serves as a location pointer of the dynamic information area, and is used to store the location information of the currently used dynamic information area. The dynamic information area stores dynamic information such as wallet data. The backup dynamic information area will not be operated on before the currently used dynamic information area reaches the service life.

[0021] Referring to Fig. 2, the control process of the method for reading and writing data of the non-contact smart card of...

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Abstract

This invention discloses a data read-write method of the untouched wisdom card, besides the basic information and dynamic information area, there is also location information which is used to store current dynamic information and multi mothball information area. When the lifetime of the current information is over, discarding the dynamic information area, amending the detail of location information, and choosing a mothball dynamic information area as the current dynamic information area. This invention not only can promise the validity and maneuverability, but also can prolong the lifetime of the card many times.

Description

technical field [0001] The invention relates to a method for reading and writing data of a non-contact smart card. Background technique [0002] In various applications of contactless smart cards, they are mainly used to store data, and these data can be read or rewritten at any time by supporting reading and writing equipment during the actual use of the card. [0003] In practical applications, because it takes a lot of time to read and write a large amount of data, and various applications have certain requirements for the transaction time of card swiping, so too much information will not be stored in the card. And when the card is swiped, usually all the data in the card will not be read or rewritten. [0004] From the perspective of application, the data stored in the card can be divided into basic information area and dynamic information area. Taking the bus card as an example, the card issuance information and manufacturer information stored in the card belong to th...

Claims

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Application Information

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IPC IPC(8): G06F12/02G06K7/01
Inventor 许国泰
Owner SHANGHAI HUAHONG INTEGRATED CIRCUIT
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