Method and system for testing magnetic head through magnetic coupling method

A magnetic head product and coupling magnetic head technology, applied in the direction of functional testing of magnetic heads, etc., can solve problems such as low efficiency, affecting card swiping results, etc., and achieve the effect of accurate test results

Active Publication Date: 2014-11-05
兆讯恒达科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method of detecting magnetic heads of finished products is to check the function of the magnetic

Method used

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  • Method and system for testing magnetic head through magnetic coupling method
  • Method and system for testing magnetic head through magnetic coupling method
  • Method and system for testing magnetic head through magnetic coupling method

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Embodiment approach

[0044] As a possible implementation, for example, the PC sends two parameters of card swiping rate and card swiping waveform to the single-chip microcomputer, and the single-chip microcomputer outputs a digital card swiping waveform signal to the D / A converter according to these two parameters. Alternatively, the PC can also directly send the selected digital card swiping waveform to the single-chip microcomputer, and then the single-chip microcomputer sends the signal to the D / A converter.

[0045]The PC stores at least one test signal representing different card swiping waveform data. When testing, select a test signal and send it to the single-chip microcomputer. The PC sends the test signal to the single-chip microcomputer. The single-chip microcomputer sends the corresponding digital signal to the D / A according to the test signal. converter.

[0046] As an implementable mode, the test signal can be a test waveform, and the PC can centrally store multiple test signals, so ...

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Abstract

The invention provides a method and system for testing a magnetic head through a magnetic coupling method. The magnetic coupling mode is used for sending magnetic signals to a magnetic head to be tested, after the magnetic head to be tested receives the magnetic signals, a magnetic testing tool decodes the received signals, the decoded result is compared with testing data sent to a single-chip microcomputer to judge whether decoding is carried out correctly, and therefore one-time automatic testing can be achieved. By the adoption of the method and the system, manual card swiping is not needed, the decoding function of the finished magnetic head is tested automatically, the magnetic head can be tested automatically, various magnetic heads can be tested, a plurality of sets of testing signals are automatically utilized, the testing signals can be slightly adjusted in real time, different card swiping gestures can be simulated, and therefore the more accurate testing result can be obtained in real time.

Description

technical field [0001] The invention relates to the field of magnetic head testing, in particular to magnetic coupling method testing magnetic head products. Background technique [0002] Magnetic cards are currently widely used in bank cards, identification cards and shopping cards. A series of binary data using F2F bi-phase encoding is recorded on the magnetic card. These data include information such as card number and identification, and conform to the ISO7811 standard coding rules. [0003] The principle of biphase encoding is as figure 1 Shown: If the magnetic signal does not change within a data period, the data is 0, otherwise the data changes once and the data is 1. The magnetic medium on the magnetic card represents data 0 and data 1 by whether there is a magnetic polarity change in the period unit. The magnetic card decoding chip can identify the binary bit stream represented by whether the magnetic polarity changes within the magnetic stripe card unit cycle, ...

Claims

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Application Information

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IPC IPC(8): G11B5/455
Inventor 刘洋刘守杰吕继华鲍妍尚星宇
Owner 兆讯恒达科技股份有限公司
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