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Terminal device capable of implementing information interaction with central processing unit (CPU) card and method thereof

A card information and terminal technology, applied in the field of CPU cards, can solve the problems of limited optional chip types and increase the cost of reading and writing devices, and achieve the effects of low cost, wide variety and cost reduction

Active Publication Date: 2013-05-08
北京大唐智能卡技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned first solution requires that the single-chip microcomputer used must have the ISO7816 hardware interface, which limits the types of optional chips
The second solution requires the MCU to add an ISO7816 codec chip, which increases the cost of the read-write device.

Method used

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  • Terminal device capable of implementing information interaction with central processing unit (CPU) card and method thereof
  • Terminal device capable of implementing information interaction with central processing unit (CPU) card and method thereof
  • Terminal device capable of implementing information interaction with central processing unit (CPU) card and method thereof

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Embodiment Construction

[0040] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. It should be understood that the following examples are only used to illustrate and explain the present invention, but not to limit the technical solution of the present invention.

[0041] Such as figure 1 As shown, the flow of the embodiment of the method for realizing information interaction with the CPU card of the present invention is shown, including the following steps executed by the terminal:

[0042] 110: Convert the information to be sent into a level signal according to the ISO7816 protocol, and send it to the CPU card through the data line port with the sending mode set;

[0043] 120: Judging whether the information sending is completed, if yes, execute the next step, otherwise return to this step;

[0044] 130: Read the level signal by performing level detection on the data line port of the set receivin...

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Abstract

The invention discloses a terminal device capable of implementing information interaction with a central processing unit (CPU) card and a method thereof. The method includes the steps: S1, the terminal transforms a pending message into a level signal according to a protocol of ISO7816, sends the level signal to the CPU card by setting a data cable port of a sending mode until the information is sent out, S2, the terminal reads the level signal through level detection on a data cable port of a preset receiving mode and decodes the level signal into a returned message from the CPU card according to the protocol of ISO7816 until the message is received. Due to the fact that a software protocol replaces an outer-mounted hardware ISO7816 in the device and the method, cost of corresponding device is reduced greatly, and types of optional chips are various.

Description

technical field [0001] The invention relates to CPU card technology, in particular to a terminal device and a method for realizing information interaction with the CPU card. Background technique [0002] At present, according to the development trend of "one card with multiple functions and multi-card interoperability" of transportation smart cards, the stock of electronic wallet funds will inevitably increase, and the security risks of logical encryption cards have attracted great attention in the industry. The security of the CPU card is much better than that of the logic encryption card, but the high price seriously restricts its popularization and application. With the introduction of CPU cards recently, its price is close to that of logical encryption cards, and the technology is becoming more and more mature, which makes it possible to fully promote the application of CPU cards to replace logical encryption cards. For this reason, the Ministry of Construction clearly ...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L1/00G06K7/00
Inventor 张磊金银军安博
Owner 北京大唐智能卡技术有限公司