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mr sensor and card reader

A sensor and card reader technology, applied in the field of MR sensors, can solve problems such as inability to obtain signals, and achieve the effects of cost reduction and simple structure

Active Publication Date: 2019-03-29
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the card reader described in Patent Document 1, a false signal output circuit is provided inside the pre-read head, which outputs a signal different from the signal corresponding to the magnetic data recorded on the card. It is impossible to obtain the signal corresponding to the magnetic data recorded on the card

Method used

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  • mr sensor and card reader
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  • mr sensor and card reader

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0042] (Schematic structure of the card reader)

[0043] figure 1 It is a schematic diagram of the card reader 1 concerning embodiment of this invention. figure 2 is showing figure 1 A view of the back of the card 2 is shown.

[0044] The card reader 1 of the present embodiment is a device for reading magnetic data recorded on the card 2 or recording magnetic data on the card 2, and is used by being installed in a predetermined high-level device such as an ATM, for example. This card reader 1 has: a card insertion portion 4 formed with a card insertion opening 3 into which a card 2 is inserted; and a main body portion 5 . Inside the card reader 1, a card passage 6 through which the card 2 inserted through the card insertion port 3 passes is formed.

[0045] In this embodiment, the card 2 is figure 1 The X direction shown is passed through. That is, the X direction is the passing direction of the card 2 . And, orthogonal to the X direction figure 1 The Z direction is t...

Embodiment approach 2

[0074] (Structure of MR sensor)

[0075] Figure 7 It is a plan view of the MR sensor 10 according to Embodiment 2 of the present invention. Figure 8 yes Figure 7 A graph of an example of the output signal of the MR sensor 10 is shown.

[0076] In Embodiment 1 and Embodiment 2, the structure of the MR sensor 10 is different. Therefore, below, the configuration of the MR sensor 10 according to the second embodiment will be described focusing on differences between the configuration of the MR sensor 10 according to the second embodiment and the configuration of the MR sensor 10 according to the first embodiment. In addition, in Figure 7 In, the same code|symbol is attached|subjected to the same structure as Embodiment 1.

[0077] Like the MR sensor 10 of Embodiment 1, the MR sensor 10 of this embodiment has a resistor R1 and a resistor R2 connected in series to each other, and a resistor R3 and a resistor R4 connected in series to each other. The resistor R1 and the res...

Embodiment approach 3

[0092] (Structure of MR sensor)

[0093] Figure 9 It is a plan view of the MR sensor 10 according to Embodiment 3 of the present invention. Figure 10 (A) is shown Figure 9 The graph showing the relationship between the resistance change rates α1 and α2 of the resistors R1 to R4 and the magnetic flux density, Figure 10 (B) is shown in the Figure 10 (A) The resistance change rate α1 of resistors R2 and R3 when the magnetic flux density is a specified value; the resistance change rate α2 of resistors R1 and R4; and the resistance change rate α1 of resistors R2 and R3 , A list of the ratio of the resistance change rate α2 of R4. Figure 11 is showing Figure 9 A graph of an example of the output signal of the MR sensor 10 is shown.

[0094] In Embodiments 1, 2, and 3, the structure of the MR sensor 10 is different. Therefore, the configuration of the MR sensor 10 according to Embodiment 3 will be described below focusing on differences between the configuration of MR s...

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Abstract

The present invention provides an MR sensor for a card reader, which can detect whether magnetic data is recorded on a magnetic stripe of a card even after it is installed in a card reader, can prevent criminals from illegally obtaining magnetic information, and can reduce costs. The MR sensor (10) has resistors (R1, R2) connected in series to each other and arranged at positions where the first magnetic track (2c) passes; and resistors (R3, R4) connected in series to each other and arranged in At the position where the second magnetic track (2d) passes, the resistors (R2, R4) are connected to the power supply, and the resistors (R1, R3) are grounded. In the MR sensor (10), the first midpoint (C1) between the series-connected resistor (R1) and the resistor (R2) and the first midpoint (C1) between the series-connected resistor (R3) and the resistor (R4) The potential difference at the second midpoint (C2) becomes the output.

Description

technical field [0001] The present invention relates to an MR sensor for a card reader, which is used in a card reader for reading magnetic data recorded on a card. And, this invention relates to the card reader provided with this MR sensor. Background technique [0002] Conventionally, there is known a card reader that reads magnetic data recorded on a card (for example, refer to Patent Document 1). The card reader described in Patent Document 1 has a magnetic head for reading magnetic data recorded on a card. Also, the card reader has a pre-read head (magnetic head) for detecting whether magnetic data is recorded on the magnetic stripe of the card inserted from the card insertion slot. [0003] In the industry using card readers, criminals have conventionally illegally obtained a signal output from a pre-read head to obtain magnetic information recorded on a card, ie, so-called theft, has become a major problem. In the card reader described in Patent Document 1, a false...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/39G01R33/09G06K7/08G11B25/04
CPCG01R33/09G06K7/08G11B5/39G11B25/04G07F19/2055G06K7/084G06K19/10G06Q20/341G07F7/082G07F7/086G07F7/1008
Inventor 川手浩田口祯东贺津久泷田幸彦石川和寿
Owner SANKYO SEIKI MFG CO LTD
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