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Magnetic stripe card data decoding circuit and decoding method thereof

A decoding circuit and magnetic stripe card technology, applied in the field of magnetic stripe card data decoding circuit and its decoding, can solve problems such as increasing equipment cost, and achieve the effects of saving equipment cost, reducing algorithm difficulty, and filtering out high-frequency interference

Inactive Publication Date: 2016-06-01
SHANGHAI AISINOCHIP ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common solution is to add a dedicated magnetic decoding chip to complete the conversion of analog signals to digital signals and to decode digital signals, which greatly increases the cost of equipment.

Method used

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  • Magnetic stripe card data decoding circuit and decoding method thereof
  • Magnetic stripe card data decoding circuit and decoding method thereof
  • Magnetic stripe card data decoding circuit and decoding method thereof

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] based on the following Figure 1 to Figure 5 , specifically describe the preferred embodiment of the present invention.

[0033] The reading and writing of the magnetic card is done by the magnetic head.

[0034] To write the magnetic card data, first encode the information. The commonly used method is to improve the frequency modulation (F2F). The encoded signal current is passed into the write head, and the write head is close to the magnetic surface of the magnetic card. Speed ​​relative movement, the magnetic track is magnetized, and the information is written on the magnetic card magnetic track. In the F2F encoding recording method, the writing of information is realized by changing the frequency of the writing current. The encoding rule is: when recording "1", the writing current changes direction in the middle of the cycle; when recording "0", the writing current Does not change direction; write current changes direction on every bit period boundary.

[0035] ...

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PUM

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Abstract

The invention discloses a magnetic stripe card data decoding circuit and a decoding method thereof. A preamplifier circuit is used for carrying out filter amplification on analog signals outputted by a magnetic head, an F2F coding circuit is used for converting the analog signals outputted by the preamplifier circuit into binary digital level signals, a microcontroller carried out decoding on the binary digital level signals outputted by the F2F coding circuit according to an F2F coding rule to obtain magnetic stripe card binary data, binary coding is converted into decimal coding, and the overall magnetic decoding process is completed. No special chip needs to be added, a low-cost electronic device is used to be combined with software coding to realize the magnetic stripe card data decoding process, high frequency interference and signal noise can be filtered, the signal peak value can be accurately detected, the algorithm difficulty is reduced, and the equipment cost is greatly saved.

Description

technical field [0001] The invention relates to a magnetic stripe card data decoding circuit and a decoding method thereof. Background technique [0002] A magnetic stripe card is a card-shaped magnetic recording medium, which is used in conjunction with various card readers. The magnetic stripe card uses a magnetic carrier to record some information. [0003] The use of magnetic stripe cards has a long history. Magnetic stripe cards are low in cost, easy to use, easy to manage, and have certain security features. have been greatly developed. [0004] With the increasing demand for security and enhanced functions, more and more magnetic stripe cards are replaced by IC cards. The bank magnetic stripe card will coexist with the smart card in a complementary manner. The security and confidentiality of the smart card is indeed better than that of the magnetic stripe card, but the perfect magnetic stripe card application system makes up for the existence of the magnetic stripe ...

Claims

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10851G06K2007/10495
Inventor 张松波周玉洁谭永伟
Owner SHANGHAI AISINOCHIP ELECTRONICS TECH
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