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Read-write equipment for smart card and operation method

A technology for reading and writing equipment and smart cards, applied in the field of smart cards, can solve the problems of high price, slow reading and writing speed of smart cards, and increased cost of reading and writing equipment for smart cards, and achieve the effect of reducing costs and improving reading and writing speed.

Inactive Publication Date: 2011-05-11
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under normal circumstances, the price of an MCU with good performance is relatively high, which also causes a corresponding increase in the cost of the smart card reading and writing device using this MCU; while the MCU with poor performance, although the price is low, makes the smart card read and write. The device reads and writes to the smart card slowly

Method used

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  • Read-write equipment for smart card and operation method
  • Read-write equipment for smart card and operation method
  • Read-write equipment for smart card and operation method

Examples

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Embodiment Construction

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that are used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

[0021] In order to solve the problems in the prior art that the reading and writing device for the smart card reads and writes the smart card slowly and the cost of the reading and writing device for the smart card is high, the invention provides a reading and writing device for the smart card.

[0022] Such as figure 2 As shown, the smart card reading and writing device of the present invention includes the following components: a main control unit 21, a microprocessor unit 22 and a smart card interface unit 23; wherein ...

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Abstract

The invention provides a smart card reading and writing device and an operating method thereof, which relates to the smart card technique. The invention improves the reading and writing speed of a smart cart while guaranteeing to reduce the cost of the smart card reading and writing device, wherein the method comprises: monitoring signal change of a main control unit IO port through a first IO port by a microprocessor unit; when a time during which the main control unit IO port is a low level exceeds a preset time, determining the main control unit to perform a reset operation to a smart card interface unit, and monitoring a reset control signal sent by the main control unit; controlling the smart card interface unit to perform the reset operation according to the reset control signal by the microprocessor unit. The invention can guarantee that the cost of the smart card reading and writing device is lowered and simultaneously the reading and writing speed of the smart card reading and writing device to the smart cart is improved.

Description

technical field [0001] The invention relates to smart card technology, in particular to a smart card read-write device and an operating method thereof. Background technique [0002] When using the smart card read-write device to read and write the smart card, usually three signals are needed between the smart card read-write device and the smart card: IO (input / output) signal, RST (reset) signal, and clock (CLK) signal. In general, smart card reading and writing devices mostly use a common smart card interface chip to control the operation of the IO timing of the smart card. The main chip of these smart card reading and writing devices generally has multiple IO ports, so it can meet the requirements of at least two signals of the IO signal and the RST signal required by the smart card interface chip. [0003] However, in some application scenarios, the main chip of the smart card reading and writing device does not have enough IO ports. Therefore, if the smart card reading...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00
Inventor 陈益峰
Owner BEIJING WATCH DATA SYST
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