Read-write method and device for CPU card

Abstract

An embodiment of the invention discloses a read-write method and device for a CPU card. The method applies to CPU cards and comprises steps of receiving a read-write command of a card reader connected with the CPU card; determining the target type of an IC card to be operated by the card reader according to sequence states of the card reader connected with the CPU card; searching a read-write processing procedure corresponding to the IC card with the target type according to the corresponding relation between at least two types of IC cards stored in the CPU card and read-write processing procedures; processing the read-write command according to the read-write processing procedure. In the embodiment, the target type of the IC card to be operated by the card reader is determined according to the different sequence states of the card reader, and the read-write processing procedures of at least two types of IC cards are stored in the CPU card, so that the corresponding read-write processing procedure can be adopted according to the target type for processing, one card is multi-application, and the universality and the multi-application performance of the CPU card are improved.

Description

technical field [0001] The invention relates to the technical field of CPU card data processing, in particular to a method and device for reading and writing a CPU card. Background technique [0002] With the progress of society and the development of science, the application of IC cards is becoming more and more extensive, and it is closely related to the basic necessities of life of users. The life of users is already inseparable from IC cards. At present, IC cards are widely used in urban public transportation, payment, access control, medical care, identification, etc., making users' lives more convenient. [0003] Since the same user may have many kinds of IC cards, it is very likely that the wrong card will not be able to handle business when using it. In addition, some types of IC cards may have the problem of discontinued production. For example, the current 102 card has been discontinued. If these types If the IC card is lost, when reissuing, although other types o...

AI Technical Summary

Problems solved by technology

[0003] Since the same user may have many kinds of IC cards, it is very likely that the wrong card will not be able to handle business when using it. In addition, some types of IC cards may have the problem of discontinued production. For example, the current 102 card has been discontinued. If these types If the IC card is lost, other types of cards can be reissued when reissuing, but because the meter installed in the user's home matches the original type of IC card, and because one type of IC card is compatible with one type of Therefore, even if another type of IC card is reissued, the reissued IC card cannot be used on the original meter, unless the corresponding meter is also replaced, which will bring a very large workload, and The economic expenditure will also be very large

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