WO2017138789A1 - Mobile magnetic data transmission system using voice coil, and method therefor - Google Patents

Abstract

The present invention relates to a magnetic data transmission system using a voice coil for a mobile device, and a method therefor, the system enabling magnetic data transmission in a mobile device which does not have magnetic secure transmission (MST) hardware comprising an MST unit and an MST coil. The magnetic data transmission system using a voice coil for a mobile device, and the method therefor of the present invention are characterized by performing magnetic data transmission by transmitting data from a mobile device to a magnetic field using a voice coil provided in an ear speaker of the mobile device or an external voice coil.

Description

Mobile Magnetic Data Transmission System Using Voice Coil and Method Thereof

The present invention relates to a mobile magnetic data transmission system and method using a voice coil that enables magnetic secure transmission even in a mobile device that does not have MST hardware including a magnetic secure transmission (MST) unit and an MST coil.

The technology that stores the magnetic strip data such as credit card and the like in a mobile device and transmits it to the magnetic head of the existing point of sale (POS) terminal through a separate coil for transmission at the time of payment is made by magnetic security transmission (MST: Magnetic). Secure Transmission) technology.

As a background technology of the MST technology, there is a system and method technology for a baseband near field magnetic stripe data transmitter of Korean Patent Publication No. 10-2015-0095889 (US 8,690,059 B1, US 8,814,046 B1) shown in FIG. This technology is a system for baseband near field magnetic stripe data transmitter (MST) devices that transmit payment card data from a smartphone or other electronic device to a Point of Sale (POS) transaction terminal. And a method, wherein the MST device includes a driver and an inductor, wherein the MST receives magnetic stripe data including payment card data, processes the received magnetic stripe data, and includes the processed magnetic stripe data. The pulses are emitted and the processed magnetic stripe data is then received remotely by the magnetic stripe reader of the POS.

As another background technology for the present invention, a system for securely loading, storing and transmitting magnetic stripe data of a device operating with the mobile wallet system of Korean Patent Laid-Open Publication No. 10-2015-0103688 shown in FIG. And method technology. The technology relates to a system and method for a payment card capture, storage and transmission device having magnetic stripe transmission capability without contact with a magnetic reader head, comprising: a magnetic field transmitter, a microprocessor, a memory storage or security element including a driver and an inductor, Battery, magnetic stripe reader (MSR), audio jack interface that works in conjunction with consumer mobile communication devices and wallet applications to capture magnetic stripe card data, secure storage of data, and Sending to a merchant's point of sale (POS) terminal, checkout system, or other MSR device.

Another background art to the present invention is the acoustically connected card reader technology of PCT publication WO 2010/111130 A2 shown in FIG. 3. This technology allows the card reader to read a contact / contactless card using magnetic strips or near field communication, and converts it into an acoustic signal that is played back by the speaker by pressing the transmit button on the card reader. The acoustic signal is detected by the microphones of the telephone and the mobile communication telephone to read the card. .

The present invention is to solve the limitation that the magnetic data transmission is impossible for a mobile device that does not have a drive hardware including an MST (Magnetic Secure Transmission) unit and the MST coil, the present invention is an ear speaker of the mobile device An object of the present invention is to provide a mobile magnetic data transmission system and a method for transmitting data from a mobile device to a magnetic field using a voice coil or an external voice coil provided in the apparatus.

According to the present invention, a magnetic field is generated by driving a voice coil or an external voice coil inside an ear speaker of a mobile device by using information of a financial card or credit cards for transmitting magnetic data stored in a card data memory. A mobile magnetic data transmission system using a voice coil configured to be inductively transmitted to a magnetic head of a point of sale (POS) terminal and a method thereof are provided.

The present invention does not include MST hardware including an MST unit 300 and an MST coil by transmitting data from a mobile device to a magnetic field by using a voice coil or an external voice coil provided in an ear speaker of the mobile device. It also provides the technical effect of enabling self-secure transmission (MST) even in mobile devices.

1 is a background art of a system and method for a baseband near field magnetic stripe data transmitter.

FIG. 2 is a further background configuration of a system and method for securely loading, storing and transmitting magnetic stripe data of a device operating with a mobile wallet system.

3 is another background art of the configuration of the card reader technology connected acoustically

4 is an example of a data structure of a credit card having a magnetic stripe.

5 and 6 show the arrangement of data for each magnetic strip track of a conventional credit card.

7 is a configuration of a magnetic secure transmission (MST) technology

8 is an example of an ear speaker structure of a mobile device

Figure 9 is an embodiment of the present invention

10 is a configuration using an external voice coil in a mobile magnetic data transmission system using the voice coil of the present invention.

Figure 11 is another embodiment of the present invention

Figure 12 is a waveform relationship for transmitting the magnetic strip data of the credit card to the POS terminal

13 is a configuration of a mobile magnetic data transmission system using the voice coil of the present invention

14 is a driving method of a mobile magnetic data transmission system using the voice coil of the present invention.

Generates a magnetic field by generating an electrical signal with credit card payment information including magnetic strip data and driving it as a voice coil, thereby inducing a magnetic head of a nearby point of sale terminal 100. A magnetic data transmission system using a voice coil of a mobile device to be delivered, comprising: a mobile controller; A mobile communication unit; An external switch input unit; Screen I / O units; Card data memory; Serial data buffer; D / A conversion unit; Volume control; Voice coil driver; provides a magnetic data transmission system using the voice coil of the mobile device in the best form for the implementation of the invention.

The following merely illustrates the principles of the invention. Accordingly, one of ordinary skill in the art, although not explicitly described or illustrated herein, may embody the principles of the present invention and invent various devices that fall within the spirit and scope of the present invention. Furthermore, all conditional terms and embodiments listed herein are in principle clearly intended for the purpose of understanding the concept of the invention and are not to be limited to the specifically listed embodiments and states. Should be.

In addition, it is to be understood that all detailed descriptions, including the principles, aspects, and embodiments of the present invention, as well as listing specific embodiments, are intended to include structural and functional equivalents of these matters. In addition, these equivalents should be understood to include not only equivalents now known, but also equivalents to be developed in the future, that is, all devices invented to perform the same function regardless of structure. Thus, the functionality of the various elements shown in the figures, including functional blocks represented by a controller or similar concept, may be provided by the use of dedicated hardware as well as hardware having the ability to execute software in association with appropriate software. Functions provided by the 'control unit' may be provided by a single dedicated processor, a single shared processor or a plurality of individual processors, some of which may be shared. In addition, the use of terms presented in a concept similar to a control unit should not be interpreted exclusively as referring to hardware capable of executing software, and without limitation, ROM for storing digital signal processor (DSP) to microprocessor hardware and software. (ROM), RAM, and non-volatile memory are to be understood to implicitly include. Other well known hardware may also be included.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 shows an example of the data structure of a credit card with a magnetic stripe. Credit cards are specified in the International Standards Organization's International Standards ISO / IEC 7810, ISO / IEC 7811, ISO / IEC 7813, etc.The data recording standards of the magnetic strip are shown in IATA, ABA, Thrift as shown. Three proposed tracks are used. Of these tracks, credit cards are used for track 1, and financial institutions use track 2. It can be seen that the number of bits stored in each track is 553 bits for track 1, 200 bits for track 2, and 535 bits for track 3. When the track passes through a magnetic head for reading a magnetic strip, the frequency band for each track becomes an audible frequency and thus a signal within a voice band (˜4 KHz). For example, if the strip passes through the magnetic head for 0.5 seconds, the data rate is read in signals of 1,106 bit / sec, 400 bit / sec, and 1,070 bit / sec per track, resulting in a signal in the voice band.

5 and 6 show an arrangement of data for each magnetic strip track of a conventional credit card. As described above, the magnetic strip of the credit card uses three tracks proposed by IATA, ABA, and Thrift: track 1, track 2, and track 3, of which credit card payment uses data from track 1. The magnetic data transmission system and the method using the voice coil of the mobile device of the present invention do not limit the use track. Hereinafter, credit card payment using track 1 will be described as an example to clarify the characteristic configuration of the present invention. The data of the credit card read through the card reader for payment is for track 1; SS (start sentinal) area where the start character '%' of the credit card data is recorded, format code (FC) area, primary account number (PAN) where the card number is recorded, and FS where the field separator character (^) is recorded. (field separator), user name (name), FS where the field separator character '^' is written, additional data field where expiration date or service code is written, card validation code (CVC) Discretionary data field where the card issuer's data is recorded, ES (end sentinal) where the character '?' Separating the end of the credit card data is recorded, and the redundancy check character (RCC) field. It is composed.

7 shows the configuration of a conventional Magnetic Secure Transmission (MST) technique. The self-secure transmission (MST) technology includes an MST unit 300 having an MST coil in the mobile device 200 and magnetic strip data of a credit card from the mobile device 200 through the MST unit 300. Drive with a coil to generate a magnetic field. In this case, the magnetic field generated from the MST coil is track data of the credit card described with reference to FIGS. 4 to 6, and the magnetic field is inductively transmitted to a magnetic head of a nearby point of sale (POS) terminal 100. do. Accordingly, a signal similar to a swipe of a credit card is directly transmitted to the magnetic head of the POS terminal 100, thereby making contactless wireless payment.

Magnetic Secure Transmission (MST) technology as described above has the advantage that it can be used as it is without changing the POS terminal 100 and the payment system of swiping the existing credit card magnetic strip. . On the other hand, a mobile device that is not equipped with the driving hardware including the MST unit 300 and the MST coil has a limitation in that the self-secure transmission is impossible.

The present invention provides a mobile magnetic data transmission system and method using a voice coil that enables magnetic secure transmission (MST) even in a mobile device that does not have MST hardware including an MST unit 300 and an MST coil. The present invention features a mobile magnetic data transmission system and method for transmitting data from a mobile device to a magnetic field by using a voice coil or an external voice coil provided in an ear speaker of the mobile device. In addition, the mobile magnetic data transmission system and method using the voice coil of the present invention may be configured to perform the same function using not only the speaker or the external voice coil but also a separate output speaker means that may be provided in the mobile device. . Hereinafter, the ear speaker and the external voice coil will be described in detail to clarify the features of the present invention.

8 illustrates an example of an ear speaker structure of a mobile device. The ear speaker of the mobile device is composed of a dynamic type. The ear speaker includes a base plate having a housing and an electrode fixed inside the housing and connected to a circuit board of a mobile device, and a permanent magnet fixed to the base plate. A diaphragm is fixed to the outer circumferential surface of the housing, and a voice coil is attached to the lower portion of the diaphragm. At this time, the voice coil is arranged to maintain a predetermined distance from the outer peripheral surface of the permanent magnet and the two terminals of the voice coil is connected to the circuit board of the mobile device through the electrode of the base plate. The ear speaker generates a magnetic field according to the current supplied from the voice coil driver of the mobile device, and the diaphragm vibrates according to the repulsion force with the permanent magnet to generate sound.

The present invention provides a mobile magnetic data transmission system and method using a voice coil that enables magnetic data transmission by generating a magnetic field using the voice coil of the ear speaker of the mobile device as described above. In this case, the speaker is used only as a means of generating and transmitting magnetic fields, and sound waves generated from the diaphragm of the speaker are excluded regardless of data transmission.

9 shows one embodiment of the present invention. The present invention generates a magnetic field by driving credit card payment information including magnetic strip data of a credit card as a voice coil inside the ear speaker of the mobile device 200. At this time, the magnetic field generated from the voice coil is inductively transmitted to the magnetic head of the adjacent point of sale (POS) terminal 100. Therefore, a non-contact wireless payment is made by transmitting a signal similar to a swipe of a credit card directly to the magnetic head of the POS terminal 100, and it is possible to transmit magnetic data even in a mobile device without MST hardware. Let's do it.

10 illustrates a configuration using an external voice coil in a mobile magnetic data transmission system using the voice coil of the present invention. As illustrated in FIG. 8, the present invention provides a mobile magnetic data transmission system and method using a voice coil that enables magnetic data transmission by generating a magnetic field using a voice coil of an ear speaker of a mobile device. Accordingly, magnetic data transmission may be made by connecting an external voice coil through an earphone jack that outputs an electrical signal for driving the ear speaker of the mobile device to the outside to generate a magnetic field. Since the external voice coil is used only as a means for generating a magnetic field, a diaphragm such as an ear speaker is not required, and the external voice coil is configured as a coil in which electrical impedance is matched with the ear speaker.

Figure 11 shows another embodiment of the present invention. Another embodiment of the present invention generates a magnetic field by driving credit card payment information including magnetic strip data of a credit card through an earphone jack of the mobile device 200 as an external voice coil. At this time, the magnetic field generated from the external voice coil is inductively transmitted to the magnetic head of the adjacent point of sale (POS) terminal 100. Therefore, a non-contact wireless payment is made by transmitting a signal similar to a swipe of a credit card directly to the magnetic head of the POS terminal 100, and it is possible to transmit magnetic data even in a mobile device without MST hardware. Let's do it.

FIG. 12 shows a waveform relationship for transmitting magnetic strip data of a credit card to a POS terminal. (A) of the figure shows the leading part of the credit card data described in FIGS. 4 to 6 above. (B) shows the magnetization direction of the magnetic strip corresponding to (a), and (c) shows the current output from the magnetic head when swiping the magnetic strip to the POS terminal 100. The waveform is shown. Magnetic strip data of a credit card is recorded and reproduced by a biphase mark coding method, and is also called a frequency / double frequency (F2F) or Aiken biphase method. The magnetic strip data includes a clocking bit of the sundae, and distinguishes '0' and '1' based on the interval of the clocking bit. Data of '0' bits are recorded by giving a transition of '0' to '1' or '1' to '0' so as to be reversed from previous data at intervals of the clocking bits, and '1' bits Are written so that a transition occurs within the interval of the clocking bits. Accordingly, the POS terminal 100 sets a value of '0' to '1' or '1' to '0' so that the pulses are reversed from the previous logic value for each pulse with respect to the current waveform shown in FIG. Generated as shown in (d) of the figure, and decoded as '0' when the transition is reversed from the previous data for each interval of clocking bits, and decoded as '1' when the transition is reversed with the previous data within the interval of clocking bits. By doing so, original card data can be read as shown in (e) of the figure.

In the mobile magnetic data transmission system and method using the voice coil of the present invention, credit card payment information including magnetic strip data of a credit card is generated according to the above-described bi-phase mark coding scheme as shown in (b) of the figure. By generating a magnetic field by driving the voice signal or the external voice coil inside the ear speaker of the mobile device 200 to generate a magnetic field, thereby providing the magnetic head of the adjacent point of sale terminal 100 ( data is inductively transmitted to the magnetic head.

13 shows the configuration of a mobile magnetic data transmission system using the voice coil of the present invention.

Mobile magnetic data transmission system using the voice coil of the present invention;

Centering on the mobile controller 210 to perform overall control of the mobile device 200;

A mobile communication unit 220 in charge of a communication function of the mobile device 200;

An external switch input unit 230 of the mobile device 200;

A screen I / O unit (240) providing touch screen input and display output,

A card data memory 250 in which information of a financial card or credit cards for magnetic data transmission is stored;

The information on the financial or credit card for the magnetic data transmission includes title information for selection by the user, including the name or type of the card.

The card data memory 250 stores name or title information of cards and data for transmitting magnetic data, respectively.

A serial data buffer 260 in which data of a card for magnetic data transmission is provided and stored from the mobile controller 210;

At this time, the data of the card for magnetic data transmission stored in the serial data buffer 260 is converted and stored in the bi-phase mark coding scheme by the mobile controller 210. In addition, the data for the magnetic data transmission may be encrypted by a token method and stored in the serial data buffer 260 to impart a security function.

A D / A converter 270 for converting data provided from the mobile controller 210 into an analog signal;

A volume controller 280 for controlling the output level of the D / A converter 270;

A voice coil driver 290 for driving the voice coil by amplifying the power by receiving the output of the volume controller 280;

An ear speaker driven by an output signal of the voice coil driver 290 to generate a magnetic field; or,

An external voice coil connected to the earphone jack of the mobile device 200 and driven as an output signal of the voice coil driver 290 to generate a magnetic field;

It consists of. In the above configuration, in a general voice call, voice data received by the mobile communication unit 220 is provided to the D / A converter 270 by the mobile controller 210 and the output of the D / A converter 270 is output. Via the volume control unit 280 and the voice coil driver 290 is reproduced as voice through the ear speaker (ear speaker).

Mobile magnetic data transmission system and method using the voice coil of the present invention, the information of the financial card or credit cards for the magnetic data transmission stored in the card data memory 250, the voice coil inside the ear speaker of the mobile device 200 Or by driving with an external voice coil connected through an earphone jack to generate a magnetic field, which is configured to be inductively transmitted to a magnetic head of a close point of sale (POS) terminal 100. In this case, the speaker is used only as a means of generating and transmitting magnetic fields, and sound waves generated from the diaphragm of the speaker are excluded regardless of data transmission.

Figure 14 shows a method of driving a mobile magnetic data transmission system using the voice coil of the present invention. Hereinafter, the driving method will be described in order. The driving method of the mobile magnetic data transmission system of the present invention;

S100: magnetic data transfer function is input by the user from the screen I / O unit 240 to start magnetic data transfer using the voice coil;

S102: title information of the cards stored in the card data memory 250 is read by the mobile controller 210 as the magnetic data transfer starts in step S100;

In this case, the title information of the stored cards includes basic information for selecting by the user including the name or type of the card.

S104: the mobile controller 210 outputs and displays the title information of the cards read from the card data memory 250 to the screen I / O unit 240;

S106: the user selects and inputs a card for transmitting magnetic data to the mobile controller 210;

S108: reading, by the mobile controller 210, data for magnetic data transmission of the card selected in the step S106 from the card data memory 250;

S110: storing, by the mobile controller 210, data for magnetic data transmission of the card read out from the card data memory 250 in a serial data buffer 260;

In step S110, the mobile controller 210 converts data for magnetic data transmission into a biphase mark coding scheme and stores the data in the serial data buffer 260. In addition, the data for the magnetic data transmission may be encrypted by a token method and stored in the serial data buffer 260 to impart a security function.

S112: the mobile controller 210 then sets the output level of the volume controller 280 to a level for magnetic data transmission;

 In step S112, the output level of the volume controller 280 is preferably set to 70% or more based on the maximum level of 100%.

S114: the mobile controller 210 waits for a switch input to start magnetic data transmission when an input occurs:

The step S114 may be configured such that the mobile controller 210 waits (S114 ') the touch screen input provided from the screen I / O unit 240 as an input for initiating magnetic data transmission. ) May start (not shown) the magnetic data transmission after a predetermined time (for example, 2-5 seconds) without waiting for an input to start the magnetic data transmission.

S116: The mobile controller 210 provides the data of the serial data buffer 260 to the D / A converter 270 and the output of the D / A converter 270 is set via the volume controller 280. Driving the voice coil through the voice coil driver 290 at an output level to perform magnetic data transmission;

 In addition, the magnetic data transmission may be configured to be repeatedly transmitted a plurality of times so as to be transmitted to a magnetic head of the adjacent point of sale (POS) terminal 100.

S118: when the magnetic data transmission is completed in step S116, the mobile controller 210 outputs, displays and ends a message indicating that the magnetic data transmission is completed to the screen I / O unit 240;

It consists of the following procedure.

Mobile magnetic data transmission system and method using the voice coil of the present invention described above, the mobile device using an external voice coil connected via a voice coil or earphone jack provided in the ear speaker of the mobile device By transmitting data from the device to the magnetic field, it is possible to transmit magnetic data even in a mobile device that does not have magnetic data transmission hardware including an MST unit and an MST coil. In addition, the mobile magnetic data transmission system and method using the voice coil of the present invention may be configured to perform the same function using not only the speaker or the external voice coil but also a separate output speaker means that may be provided in the mobile device. .

Although the mobile magnetic data transmission system and method thereof using the voice coil of the present invention have been described by the limited embodiments and the drawings, the present invention is not limited thereto and by those skilled in the art to which the present invention pertains. Various modifications and variations are possible without departing from the spirit and scope of the present invention.

The present invention can be used in the mobile electronic payment and security management industry using magnetic data by enabling magnetic security transmission even in a mobile device that does not have MST hardware including a magnetic secure transmission (MST) unit and an MST coil.

Claims (14)

Generates a magnetic field by generating an electrical signal with credit card payment information including magnetic strip data and driving it as a voice coil, thereby inducing a magnetic head of a nearby point of sale terminal 100. In a magnetic data transmission system using the voice coil of the mobile device to be delivered, A mobile controller 210 performing overall control of the mobile device 200; A mobile communication unit 220 in charge of a communication function of the mobile device 200; An external switch input unit 230 of the mobile device 200; A screen I / O unit (240) providing touch screen input and display output, A card data memory 250 in which information of a financial card or credit cards for magnetic data transmission is stored; A serial data buffer 260 in which data of a card for magnetic data transmission is provided and stored from the mobile controller 210; A D / A converter 270 for converting data provided from the mobile controller 210 into an analog signal; A volume controller 280 for controlling the output level of the D / A converter 270; A voice coil driver 290 for driving the voice coil by amplifying the power by receiving the output of the volume controller 280; Magnetic data transmission system using the voice coil of the mobile device, characterized in that consisting of The voice coil driver 290 of claim 1, The ear speaker of the mobile device 200 is connected The voice coil of the ear speaker is driven as an output signal of the voice driver 290 to generate a magnetic field. The magnetic data transmission system using the voice coil of the mobile device. The voice coil driver 290 of claim 1, An external voice coil is connected through the earphone jack of the mobile device 200. Magnetic data transmission system using the voice coil of the mobile device, characterized in that configured to be driven by the output signal of the voice coil driver 290 to generate a magnetic field The method of claim 3, wherein the external voice coil (external voice coil), Magnetic data transmission system using the voice coil of the mobile device, characterized in that the ear speaker of the mobile device 200 and the electrical impedance (impedance) is configured as a matching coil The method of claim 1, wherein the serial data buffer 260, Magnetic data transmission system using the voice coil of the mobile device, characterized in that the data for the magnetic data transmission is configured to be converted and stored in the bi-phase mark coding scheme by the mobile controller 210 The method of claim 1, wherein the card data memory 250, Using the voice coil of a mobile device, characterized in that it is configured to be stored as information of a financial or credit card for magnetic data transmission, including title information for selection by the user, including the name or type of the card. Magnetic data transmission system Generates a magnetic field by generating an electrical signal with credit card payment information including magnetic strip data and driving it as a voice coil, thereby inducing a magnetic head of a nearby point of sale terminal 100. In the method of driving a magnetic data transmission system using the voice coil of the mobile device to be delivered, S100: magnetic data transfer function is input by the user from the screen I / O unit 240 to start magnetic data transfer using the voice coil; S102: title information of the cards stored in the card data memory 250 is read by the mobile controller 210 as the magnetic data transfer starts in step S100; S104: the mobile controller 210 outputs and displays the title information of the cards read from the card data memory 250 to the screen I / O unit 240; S106: the user selects and inputs a card for transmitting magnetic data to the mobile controller 210; S108: reading, by the mobile controller 210, data for magnetic data transmission of the card selected in the step S106 from the card data memory 250; S110: storing, by the mobile controller 210, data for magnetic data transmission of the card read out from the card data memory 250 in a serial data buffer 260; S112: the mobile controller 210 then sets the output level of the volume controller 280 to a level for magnetic data transmission; S114: the mobile controller 210 waits for an input for initiating magnetic data transmission and starts magnetic data transmission when an input occurs: S116: The mobile controller 210 provides the data of the serial data buffer 260 to the D / A converter 270 and the output of the D / A converter 270 is set via the volume controller 280. Driving the voice coil through the voice coil driver 290 at an output level to perform magnetic data transmission; S118: when the magnetic data transmission is completed in step S116, the mobile controller 210 outputs, displays and ends a message indicating that the magnetic data transmission is completed to the screen I / O unit 240; Method of driving a magnetic data transmission system using a voice coil of a mobile device, characterized in that consisting of The method of claim 7, wherein step S102, Method for driving a magnetic data transmission system using a voice coil of a mobile device, characterized in that the title information to be selected by the user, including the name or type of the card is read by the mobile controller 210 The method of claim 7, wherein step S110, The mobile controller 210 is a method of driving a magnetic data transmission system using a voice coil of a mobile device, characterized in that for converting the data for the magnetic data transmission to the bi-phase mark coding scheme to be stored in the serial data buffer 260 The method of claim 7, wherein step S112, A method of driving a magnetic data transmission system using a voice coil of a mobile device, characterized in that the output level of the volume control unit 280 is set to 70% or more based on the maximum level 100%. The method of claim 7, wherein step S114, Method for driving a magnetic data transmission system using the voice coil of the mobile device, characterized in that the mobile controller 210 is configured to wait for the switch input provided from the external switch input unit 230 as an input for starting the magnetic data transmission. The method of claim 7, wherein step S114, Magnetic data using the voice coil of the mobile device, characterized in that the mobile controller 210 is configured to wait (S114 ') the touch screen input provided from the screen I / O unit 240 as an input for initiating magnetic data transmission. Driving method of the transmission system The method of claim 7, wherein step S114, Method for driving a magnetic data transmission system using the voice coil of the mobile device, characterized in that the mobile controller 210 is configured to start the magnetic data transmission after a certain period of time. The method of claim 7, wherein step S116, Method of driving a magnetic data transmission system using a voice coil of a mobile device, characterized in that the magnetic data transmission is performed repeatedly a plurality of times

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