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Smart card driving system

A technology for driving systems and smart cards, applied in instruments, computing, record carriers used by machines, etc., can solve problems such as high cost and complexity, and achieve the goal of reducing costs, improving market competitiveness, and ensuring data transmission rate and error correction performance. Effect

Inactive Publication Date: 2008-12-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the smart card drive system currently used in the industry is relatively complicated and the cost is relatively high, it is necessary to develop a smart card drive system with a simple system and low cost

Method used

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Embodiment Construction

[0017] The present invention and its specific implementation are described below in conjunction with the accompanying drawings.

[0018] The focus of the present invention is not on how to write software to realize the drive sequence, etc. This sequence control software has been provided in large quantities in the prior art. The focus of the present invention is to provide a hardware drive scheme, through the connection of each pin The scheme enables the timing control software to transmit commands and data interactions through pins, so that no dedicated smart card management chip is needed to control the smart card, but only the embedded system chip itself can provide control. In the embodiment, on the basis of the above-mentioned hardware connection structure, according to the timing flow specified in the ISO / IEC 7816 standard, the embedded system controls the timing flow of the initialization, reset, data request, card rejection, and card deactivation of the smart card throu...

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Abstract

The invention discloses a smart card drive system that comprises smart card chip which possesses input / output pin which can receive and send data, reset pin, clock pin, embedded system chip that includes general purpose output, clock output, serial port input pin, serial port output pin, thereinto, the general purpose output is connected with the reset pin of the smart card chip to control the level of the reset pin; the clock output is connected with the clock pin to output system clock to the smart card chip in operating mode; the serial port input pin, serial port output pin are connected with the input / output pin of the smart card chip to realize the communication between the serial port and smart card controlled by embedded system. The invention guarantees the data signaling rate and debugging performance, but also avoids using single-purpose chip to manage smart card, so it can decrease cost in large scale application and increase the competitive power.

Description

technical field [0001] The invention relates to a drive system, in particular to a smart card drive system. Background technique [0002] A smart card is a small embedded system, such as UIM (User Identity Model, Subscriber Identity Module) card, SIM (Subscriber Identity Model, Subscriber Identity Module) card, PIM (Personal Identity Module, Subscriber Identity Module) card, etc. in the field of mobile phones. It is mainly used to store and manage some user information. Due to the special requirements of smart card timing, in the current systems using smart cards, there is generally a dedicated chip for managing data interaction with smart cards. With the popularity of various embedded systems and the extensive use of smart cards, the cost of chips used for smart card management is also increasing. Since the smart card driving system currently used in the industry is relatively complicated and the cost is relatively high, it is necessary to develop a smart card driving syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/18
Inventor 杨锐陈坚李德星
Owner ZTE CORP
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