UA106187C2 - System for data transmission by inductive method - Google Patents

Abstract

The invention relates to electrical engineering, in particular to electronic devices transmitting digital data, payment instruments and data transmission instruments, and is intended for data transmission by inductive method. A system for data transmission by inductive method comprises a device for data transmission by inductive method (13), receiver (14), computing system (12), communication systems. The device for data transmission by inductive method (13) comprises an emitter driver (6) and inductor. Additionally a waveform synthesizer (5) is incorporated, this comprises a real-time computing microsystem and connection device (4). The waveform synthesizer is connected to the emitter driver, connected to inductor, and capable of switching polarity of supply voltage applied to emitter inductance which is capable of transmitting digital data to the receiver made as a reader magnetic head for the distance up to 15 cm with simultaneous current amplification in the emitter inductance.

Description

The invention belongs to electronic systems (electronic devices) that transmit digital data, as well as to payment instruments and data transmission instruments, and is intended for the transmission of digital data, for example, payment data using a smartphone or other electronic device through a digital data transmission device by inductive method in ROB5-terminal.

The following designations (determinations) are used below in the description.

M5T (eng. - tadpeiis zesipiu igapsasiyop) - secure magnetic transactions.

KMS - a card with a magnetic strip. Produced in accordance with the IZOLES 7810 standard,

IZOLES 7811, IBOLES 7812, IZOLES 7813, IBO 8583 and IBOLES 4909.

A payment card is a card with a magnetic stripe intended for use in payment systems.

Issue of bank cards - activities related to the issuance of bank cards, opening of accounts and settlement and cash service for customers when carrying out operations using the bank cards issued to them.

Emulation - the process of emulation, which consists in imitating the behavior and features of the emulated object.

The reader head or magnetic stripe reader (MRI) is a magnetic head.

Transfer - a mathematical/geometric operation of moving objects along a coordinate grid without changing their orientation in space.

Polarization is a criterion that characterizes the dependence of the coorientation of the axes of the inductance winding of the emitter and the magnetic stripe reader (the angle between the axes when they are parallel transferred) on the maximum distance of stable signal reading between them.

Secure data storage data storage that prevents unauthorized access to them.

A secure tool (English - zesypu - security) is a tool developed taking into account the requirements of secure data storage and transmission.

Contactless data transmission - transmission of information over a distance between two or more devices, with the help of which data transmission is carried out, which does not require contact directly between these devices (for example, between the inductive coil of the emitter, which

Zo transmits the signal, and the head of the reader, which is in the device for reading magnetic cards).

The driver is a structural element or module designed to match the control signal (from any source capable of commanding the driver) and the payload, in particular, the inductive coil of the emitter.

An inductor is an inductive coil of an emitter that transmits a signal.

Method и/21 (English - doShbie yediepsu) is a digital signal modulation method described in the IZOLES 7811 standard.

Quality is a parameter of an oscillating system that determines the width of the resonance and characterizes how many times the reserves of the sum of dynamic and accumulated energy in the system are greater than the energy loss in one period of oscillations.

Magnetic wire - a part or a set of parts designed for the passage of a magnetic flux with certain losses.

The middle point of consumption is the common wire (ground, neutral). It is called "average" in the case of using bipolar power supply systems.

Details - a set of digital data necessary for user identification in the system (payment, discount, security system, authorization, etc.).

A multivibrator (signal synthesizer) is a device consisting of a resistor and a driver of the upper and lower order (boundary, arm). A multivibrator is a mechanism for successive switching of positive and negative (direct and reverse) current flow.

BV 2.0 (English - icpimega! 5egpa! biv) is a serial data transfer interface for medium-speed and low-speed peripheral devices in computing.

Version 2.0. 5VOI9 (eng. ipimegza! zepia! Bby5 op-She do) is a further expansion of the OB 2.0 specification, designed to facilitate the connection of peripheral O5B devices to each other without the need to connect to a personal computer (PC).

ROB-terminal (English - roipi oyi zaiye - point of sale) - an electronic software and technical device for accepting payment from plastic cards, which can accept cards with a chip module, magnetic stripe and contactless cards, as well as other devices with contactless interface

Brie (eng. - rii reg ipsy) - the density of recording digital data. 60 ope-iite-rip is a one-time unique ROM code.

And VS (eng. - Iopaitsaipa! gedipdapsu sneskK) - longitudinal control with a redundant code.

Termination is an auxiliary sign of the end of string data.

M-bit coding is the interpretation of a sequence of bits, where M means the number of bits that are allocated in the stream to interpret the elements of the data stream. As a rule, the number of bits in the sequence must be a multiple of M, otherwise the data (the remainder of the division) is discarded.

EMF - electromotive force.

Triggering distance is the distance between the emitter and the receiver (detector), at which stable data transmission occurs.

H-bridge is an electronic circuit that makes it possible to apply voltage to the load in different directions.

Software (P3) - a sequence of commands, implemented in the form of runtime commands, intended for the functioning of computer systems that implement the assigned tasks and developed algorithms.

A frame (English iate) is an indivisible amount of information describing the state in which the inductive coil of the emitter should be.

The current frame (English - sishtepi itate) is the frame that is currently read by the driver. Based on the information received from the frame, the driver sets the emitter in the appropriate mode.

MES (English - peag yvid sottipisaiyop, near-field communication) is a short-range wireless high-frequency communication technology that enables data exchange between devices located at a distance of about 10 centimeters.

A transponder is a transceiver that sends a signal in response to a received signal.

VNIO (English - gadio ediepsu idepiyisayop, radio frequency identification) - a method of automatic identification of objects, in which data stored in transponders or in VRIU-tags are read or written using radio signals.

Payment data - information stored by the second track (Mask 2). According to IZOLES 7813, this information is necessary for carrying out a transaction using the ROB5 terminal.

A bank/store/institution is an organization authorized to issue cards that contain digital information.

Z Computer system smartphone, phone, tablet, personal computer, other gadgets, etc.

Today on the technology market there are many electronic devices that carry out data transmission, payment instruments, access control systems, identification systems, as well as methods of settlement and cash service, methods of authorization in

With 5 discount systems, etc.

Such tools include cards with a magnetic stripe (CMS), which contain, among other things, data of payment cards. Among others, credit, debit, gift cards, and discount cards belong to payment KMS. Data is "recorded" on the magnetic strip of these cards by means of alternating magnetization of particles introduced into the magnetic strip.

Payment card data are read from their magnetic stripe in the ROB5 terminal, when the card is passed through the magnetic card reader (through the card slot). The device for reading magnetic cards consists of a reading head and a decoding circuit associated with it. As the magnetic card moves through the magnetic stripe reader (through the card slot), its magnetic stripe passes in front of the reader head.

When moving relative to the reading head, the magnetic strip, which is equipped with magnetic domains of alternating polarity, creates a pulsating magnetic field in the gap of the reading head.

The reading head converts this pulsating magnetic field into an equivalent electrical signal.

The decoder circuit amplifies and digitizes this electrical signal, reproducing the same data stream that was recorded (that is, embedded at the time of recording) on the card's magnetic strip.

Coding of the magnetic strip is described in the international standard IBO 7811 and IZO 7813.

With the growing popularity and capabilities of smartphones, there is a growing desire to use them as mobile wallets, as well as to use them to make payments at points of sale without using multiple magnetic stripe cards. The key obstacle to making such a decision was the lack of a data transmission channel between mobile phones and the PO5 terminal.

In this regard, several alternatives were proposed. They include the manual setting of data for transmission to the ROB terminal, 20 barcodes displayed on the phone screen and reading with a device for reading 20 barcodes, VRIUO, attached to phones and built into their hardware for close proximity because of contactless communication (BBZ), which is launched using the phone application.

Of these methods, 20 barcodes and BBZ are the most promising. They have a wide range of reception, but there is no possibility of their wide practical use due to the lack of appropriate reading devices at points of sale. And in the case of BBZ, it should also be noted that there is no standardized possibility of using BBZ in many smartphones.

Accordingly, there is a need for improved devices and methods for transferring payment card data, as well as other digital information from a smartphone or other electronic device, remotely to a ROB5 terminal or other magnetic card reader.

A well-known emulator of the magnetic strip of a payment card (transaction card) according to 05 4791283 ГП1Ї. Device |1| designed to transmit data from a microprocessor located in a card that emulates a regular credit or debit card) with a magnetic stripe. The data is sequentially transmitted from the microprocessor to the magnetic field generators, which emulate pre-recorded data on the magnetic stripe of a conventional card. This allows data to be transferred from the microprocessor to standard card readers without the need to significantly change the card readers (card reading devices). The scheme is used to determine the position and speed of movement of the card through the card reader to ensure the transfer of data from the microprocessor to the magnetic field generators within the time of scanning the card by the card reader head. The disadvantages of the device (|1| are as follows. 1. The device (1| is a contact device. The negative consequences of this are mechanical wear and contamination of the reading head. 2. The device (1| is made in the form factor of a card. A negative consequence of this may be the inconvenience of use , because the device is easy to lose, as well as mechanically damaged. 3. In the device |1| there is a need to detect the reading head. The negative consequence of this is the possibility of false (idle) activations. It also complicates the design of the device and reduces the service life of the caries without recharging. 4. In a || device, the information is pre-recorded on a device made in the form factor of a card, that is, the data can be read without authorization.This creates the problem of an information security threat, that is, the information can be read directly from this device.

There is also no data deletion mechanism in case of card loss. 5. In the device | there is no implementation of quick addition of new information. Negative

The consequences of this are a significant increase in time or the inability to expand (add) or replace data in the |11 device. 6. In the device |1| the op-e-rip function is not implemented in hardware and software. The negative consequences of this may be the lack of additional protection (due to the use of the same PIN code) every time the device is used.

The payment card and method according to patent application MO 2013181281 21 are also known.

Payment card according to |2| contains a magnetic strip emulator and a set of "button" areas on the surface of the payment card. When the "button" is pressed, it is authenticated as an access code, and the payment function is activated by the magnetic strip emulator. The payment card also contains a transceiver (connection unit) for wireless communication with a mobile device (phone, tablet). At the same time, it is assumed that the payment function of the magnetic strip emulator will be suppressed in response to the failure of the wireless connection with the mobile device.

The payment card according to |2) can include MES and VRIO emulators. The processor and emulator can detect the magnetic stripe card reader head. At the same time, the processor controls a set of electromagnetic coils through the coil driver, depending on the position and/or speed (ie, speed and direction) of the emulator's magnetic strip relative to the head when the payment card passes through the magnetic card reader.

Disadvantages of the device |2| are as follows. 1. Device |2| is contact. The negative consequences of this are mechanical wear and contamination of the reading head. 2. The device |(2| is made in the form factor of a card. A negative consequence of this can be the inconvenience of its use, because the device is easy to lose, as well as mechanically damaged. 3. In the device |2)| there is a need to detect the reading head and the speed of card movement. A negative consequence of this is the possibility of false (idle) activations. It also complicates the design of the device, which leads to a decrease in the service life without recharging. 4. In the device |I2| the op-ite-rip function is not implemented in hardware and software. A negative consequence of this may be the lack of additional protection (due to the use of the same PIN code) with each subsequent use.

Also known is the system and method of the control scheme of the communication devices of the dynamic magnetic band according to the patent application M/O 2011103160 IZ). The system's magnetic stripe emulator includes a coil and a coil driver. The driver provides for receiving a signal of various forms.

It is assumed to receive a double frequency of the signal - doibie-ptdieps (11/21).

Disadvantages of the device |Z| are as follows. 1. The device IZ) is a contact device for reading cards with a magnetic stripe. The negative consequences of this are mechanical wear and contamination of the reading head. 2. IZ device made in the card form factor. A negative consequence of this can be the inconvenience of use, because the device is easy to lose, mechanically damaged. 3. In the device |Z) there is a need to detect the reading head. A negative consequence of this is the possibility of false (idle) activations.

Patent 05 8628012 |4) was selected as the closest analog (prototype), which describes the system and method of operation of the M5T near-field data frequency band transmitter of the magnetic strip, which transmits payment card data from a smartphone or other electronic device to a ROB terminal for transactions. The device, which works on the basis of the M5T method, contains a driver and an inductor. A device operating on the basis of the M5T method receives data from a magnetic stripe containing payment card data, processes the received magnetic stripe data, and generates high-power magnetic pulses containing the processed magnetic stripe data, which can then be retrieved by a reader device magnetic cards in the PO5 terminal.

The disadvantages of the closest analogue (prototype) are as follows.

First, the implementation of data transmission with the help of this system is possible remotely at a limited distance in the range of 1 to 2 inches, measured between the signal transmitting device, made in the form of an inductor (the coil of the signal transmitting device), and the detector (a device that which receives the signal), made in the form of a reader head located in a device for reading magnetic cards.

This "hard" limitation on the distance between the devices for transmitting and receiving a digital signal is a consequence of the fact that for a smaller distance between these devices (ie, less than 1 inch), the power of the inductor is too large. This leads to magnetization of the head core and/or excessive signal amplitude, which causes degradation of the amplifier/detector input stage.

For longer distances between these devices (ie, more than 2 inches) the existing design

From the inductor does not contribute to an unambiguous interpretation of the signal transmitted by the inductor. The consequence of this is noise. Also, the distribution of the magnetic field in space and the region of the best data transmission is not determined.

Secondly, the implementation of the technology (method) and the device, which works on the basis of the M5T method, provides for the possibility of saving memory after a power outage for storing payment card data and other personal information. This characteristic of the invention is not secure, as the preservation of information may cause its unauthorized use by third parties.

Thirdly, when implementing M5T technology, an inductor coil with a Q factor in the range from 10 μmN/Ω to 80 μmN/Ω is used. The consequence of the above-mentioned high Q-value of the inductor coil is its high reactivity, due to which extraneous electromagnetic oscillations are generated. This leads to signal noise and complicates the interpretation of data produced by the decoder, which is located in the magnetic stripe card reader. Compensation of extraneous fluctuations leads to greater (at least 15 95) power consumption.

Also, due to the high Q factor of the inductor coil, in order to maintain the necessary ratio between the useful signal and the noise signal, it is necessary to provide increased radiation power. This, in turn, leads to remagnetization of the core (core) of the reader head, as a result of which intensive magnetic wear of the head occurs.

Fourthly, the device working on the basis of M5T technology is additionally equipped with a magnetic stripe reader head (SMP) for the possibility of obtaining data of the magnetic stripe of the card and for their further use. The presence of a magnetic stripe reader head may facilitate unauthorized copying (use) and/or unauthorized transmission of protected data located on the magnetic stripe.

Fifth, the signal of the device operating according to the M5T method, due to the high signal transmission power, can be registered by devices, including those not intended for registration of magnetic signals (for example, an electret microphone). The negative consequences of this are the possibility of third-party reading of data and unauthorized obtaining of information.

Sixth, the device |(4 hardware and software does not implement the op-itere-rip function.

A negative consequence of this may be the lack of additional protection (due to the use of the same PIN code) with each subsequent use.

The invention is based on the task of creating a compact and universal device designed for safe and reliable transmission of digital data over a distance increased compared to existing values, in accordance with current international standards for the transmission of digital data, primarily payment data or other information, as well as for the implementation of payments, and without the physical presence of magnetic cards, compatible with modern computing or communication systems, such as mobile phones, smartphones, tablets, or other electronic devices, remotely to a device for reading magnetic cards through the effective constructive implementation of the component elements of the device and their mutual location and availability effective connections between them, as well as the implementation of device elements from effective materials, which will also contribute to the portability of the design and improved energy-economic performance of the device, and will also ensure safe and reliable transmission of digital data and contribute giving the user full control over the transactions made, and will also lead to simplicity and convenience of user service, especially when making payments using a smartphone (phone, tablet, etc.).

The specified technical problem is solved by the fact that in the system of digital data transmission by inductive method, which contains a device for transmitting digital data by inductive method (13), for example, data contained on payment cards, from a smartphone or other electronic device, to a receiving device (14) , for example, in a PO5 terminal for carrying out transactions, computing systems (12), for example, in the form of a computer, mobile phone, smartphone, tablet or other electronic device, and/or communication systems, as well as a communication device (4) with above systems, while the digital data transfer device by inductive method (13) contains an emitter driver (6) and an inductor made in the form of an emitter inductive coil (2), the new thing is that the system contains a signal synthesizer (item 5) which contains a real-time computing microsystem, made in the form of a micro-computer, the device for transmitting digital data by the inductive method (13) is made with the possibility of safe and reliable transmission of digital data from the inductive coil of the emitter (2) to the receiving device in the form of a magnetic head of the reader (1) at a distance of up to 15 cm in the absence of a material carrier of the transmitted digital data, a transmission device

From digital data, the inductive method (13) is made with the possibility of switching the polarity of the supply voltage applied to the inductive coil of the emitter (2), with simultaneous amplification of the current in the inductive coil of the emitter (2), as well as with the possibility of hardware implementation of the polarization of the signal carrier and software and hardware implementation of the op-ite-rep service.

The real-time computer microsystem of the signal synthesizer (5) is made with the possibility of turning off the balancing of the computing load.

The real-time computing microsystem of the signal synthesizer (5) is made with the possibility of sequentially setting the value of the current frame of the signal on the outputs of a two-bit digital bus with a frequency of signal reproduction in the range from 0 N? up to 4 KN?2.

As a driver of the emitter (6), the system contains a high-frequency switch with an average point of consumption and stabilization of the voltage of the average point relative to the upper and lower supply points.

The connection device (4) with computing and communication systems (12) is made with the ability to transmit data and control commands of the digital data transmission device by the inductive method (13) and with the ability to check the status of this device (13).

The connection device (4) with computing and communication systems (12) is made with the possibility of supporting standard methods of data transmission, such as, for example, Vipeii,

OAVT, 5232, О5В and others.

The connection device (4) is made in the form of buttons or mode switches.

The flat core (18) of the inductive coil of the emitter (2) is made of magnetically neutral or magnetically conductive material.

The flat core (18) of the radiator coil (2) is made of an oblong shape with a rectangular cross-section.

The flat core (18) of the inductive coil of the emitter (2) is made of an oblong rectangular section with rounded edges or with a cross section in the form of broken faces.

The winding of the inductive coil of the emitter (2) is made of conductive materials with isolation of each turn from neighboring turns.

The device for transmitting digital data using the inductive method (13) is made with the possibility of emulating one track number 1 (imask 1).

The device for transmitting digital data using the inductive method (13) is made with the possibility of emulating one track number 2 (igask 2), which contains the necessary payment data in the case of payment operations.

The device for transmitting digital data using the inductive method (13) is made with the possibility of emulating one track number Z (itask 3).

The device for transmitting digital data using the inductive method (13) is made in the form of an overlay for an electronic device.

The device for transmitting digital data using the inductive method (13) is made in the form of a protective cover for an electronic device.

The device for transmitting digital data using the inductive method (13) is made in the form of a key ring.

The device for transmitting digital data using the inductive method (13) is made in the form of a bracelet.

The inductive coil of the emitter (2) is made with a Q factor in the range from 0.0001 to 1200

NN t.

The inductive coil of the emitter (2) is made with an unregulated arrangement of turns.

The inductive coil of the emitter (2) is made with an orderly arrangement of turns.

The computer system (12), for example, in the form of a mobile device, is equipped with software (17), implemented on the basis of the algorithm for safe storage of requisites (16).

The software (17) is implemented on the basis of the authorization and identification algorithm.

The computer system (12) and the receiving system of the bank (15) are software and hardware designed with the possibility of simultaneous implementation of the oper-ate-reep service when implementing the cryptofunction algorithm.

The device for transmitting digital data using the inductive method (13) is made with the possibility of generating a signal when switching the polarity.

The emitter driver (b) is made according to the H-bridge scheme.

The elements of the operator service are located in the computer system (12) and the receiving system (15) of the bank.

The listed features of the device constitute the essence of the invention.

The existence of a cause-and-effect relationship between the set of essential features of the invention and the technical result achieved is as follows.

З The modern level of technology allows to perform electronic transactions in various ways, which are implemented on the basis of various basic devices. However, in most cases, the way transactions are carried out depends on the selected method or type of transaction (for example, transactions using a payment card, paying for parking in a parking lot from a prepaid account, etc.)

The most frequently used means is a payment card (magnetic or microprocessor). The most popular payment card systems include Miza, MazivgSaga and Ategisap Ehrgezv5.

A specific bank account is allocated for the payment card. Accordingly, the funds available for this payment card can only be in one place. The existence of a large number of accounts in financial institutions leads to the need to use other cards, which is often inconvenient and dangerous for the card user.

The proposed solution provides the ability to use several different accounts by storing and using virtual account details, as well as using other digital information that can be stored on magnetic stripe cards and transmitted to a magnetic stripe card reader. Thus, funds can be accessed simultaneously from several client accounts and do not require conversion of existing payment systems based on cards with a magnetic strip.

The solution to the set technical tasks can be used for the transfer of payment information necessary for payment, non-cash operations, as well as for the transfer of other digital data.

The advantages of the proposed technical solution are the possibility of universal transmission of digital data, including the transmission of payment data for making payments using devices equipped with magnetic card readers, and without the physical presence of such cards at the client and, therefore, without the use of such cards in the magnetic card reader device .

This makes it possible not to issue cards with a magnetic stripe (including payment cards) or not to carry many cards with a magnetic stripe (including payment cards), and also facilitates the convenience of making both payments and in general transmission of digital information.

Data transmission using the proposed technical solution is safe, as the device does not store payment information, and the information will be transmitted to the protected area of the software through a secure channel. This prevents unauthorized access or use of information. Also, in the declared system, the function of operation-use-rip is implemented,

which promotes information security even in case of unauthorized access to payment data, by using a unique rip code (new each time) with each new data transfer.

The technical solution is explained in fig. 1 - fig. 5, where: - in fig. 1 shows a conventional scheme of transmission and reception of signals from the coil to the reading head by the inductive method, and a conventional distribution of power lines in the head area; - in fig. 2 shows the scheme of the digital data transmission device using the inductive method; - in fig. C shows the connection and interaction of the components of the claimed system, which works on the basis of the described method, with a card reader with a magnetic strip; - in fig. 4 shows the life cycle and accompanying elements of the claimed system, which works on the basis of the described method (that is, from card issuance to data transmission); - in fig. 5 shows a diagram of the design of the reading head, as well as the design of the inductive coil of the emitter and the orientation of the inductive coil of the emitter at the time of data transmission.

In fig. 1 oval lines show the conventional distribution of magnetic field lines in the area of the magnetic head (item 3).

In fig. Dotted lines mark the winding axes of the emitter coil (item 10) and the reading head coil (item 8).

In fig. 1 - fig. 5, the following designations are adopted: 1 - reading head (a component of the reading device); 2 - inductive coil of the emitter;

C - spatial distribution of magnetic field lines of force in the area of the magnetic head; 4 - connection device; 5 - signal synthesizer; b - emitter driver; 7 - reader, core of the reading element; 8 - the coil winding axis of the reading head; 9 - gap of the reading head; 10 - the winding axis of the inductive coil; 11 - arrangement of elements during signal transmission (pos. 11 includes pos. 2 and pos. 10, as well as pos. 1, pos. 7 and pos. 8); 12 - communication or computer system with installed software; 13 - a device for transmitting digital data using the inductive method; 14 - receiving device (for example, ROB5 terminal); 15 - business entity (bank/store/institution); 16 - requisites; 17 - software installed on the computer system (12); 18 - the core of the inductive coil of the emitter; 19 - constructive inductance of the magnetic head reader.

The inductive digital data transmission system is based on the inductive digital data transmission device (item 13). This device (13), in turn, consists of an emitter inductive coil (item 2), an emitter driver (item 6), a signal synthesizer (item 5), a coupling device (item 3. 4) with computing devices (computer , mobile phone, smartphone, tablet, etc.) and/or communication systems (item 12).

The inductive coil of the emitter (emitter) (item 2) has the following features. The flat core of the inductive coil of the emitter (item 18 in Fig. 5) is made of magnetically neutral or magnetically conductive material and acts as a frame for fixing the conductor. The core has an oblong shape with a rectangular section. The shape of the core with rounded or cut faces of the cross section is allowed.

The winding of the inductive coil of the emitter (item 2) is made of conductive materials with isolation of each turn from neighboring turns. Also, for example, an air layer can act as an insulator at a significant potential difference, which is less than 2 kV/mm (at a relative humidity of less than 50 9b).

During the operation of the inductive coil of the emitter (item 2), the gradient of the magnetic field is co-directed along the length (winding axis) of the emitter (item C in Fig. 1).

Since the magnetic head (item 1) registers the magnitude of the change in the magnetic field (i.e. the first derivative), for a larger peak amplitude (signal surge) it is necessary that the front of the polarity change tends to be instantaneous.

In this regard, the emitter driver (item b) has the following features. To form expressive bursts and to extend the front of the radiated signal during the operation of the device (item 13), a change in the polarity of the current through the emitter (item 2) using an H-bridge is used. This leads to the actual doubling of the input voltage of the driver (item b) on the contacts of the emitter, due to which the range of stable operation of the claimed technical means of transmitting digital data by the inductive method increases.

It is also allowed as a driver to use a high-frequency switch (item 6 in Fig. 2) with the middle point of the consumer and stabilization of the voltage of the middle point relative to the upper and lower power points. This is implemented using the control of the microcomputer system (item 5).

The signal synthesizer (item 5) has the following features. It contains a real-time computing microsystem (a micro-computer that uses an operating system and excludes the balancing of the computing load) (pos. 5), sequentially sets the value of the current frame of the signal on the outputs of the two-bit digital bus (between pos. 5-6 in Fig. 2 ). The signal reproduction frequency is from 0 H2? up to 4 KN?2.

It is possible to use a single-bit bus (not shown in Fig. 1 - Fig. 5) with the use of logical negation for the purpose of controlling the H-bridge (which is one of the options for matching the synthesizer and the driver to simulate the auxiliary bit). At the same time, due to the potential difference, data transmission is implemented accordingly.

Reception of data and commands, preparation, emission and control of the device (item 13) is carried out by the computer system (item 12).

The connection device (item 4) with computing or communication systems (item 12) has the following features. It is made with the ability to transmit data and commands of the digital data transmission device by the inductive method (item 13) and with the possibility of polling (checking) the state of the digital data transmission device by the inductive method (item 13). The connection can be implemented using standard data transmission methods, such as Viseioi, OAVT, 85232, OB, etc.

In the case when the payment data are not expandable, that is, set by the manufacturer, and are not intended to be added or changed during operation, or the device for transmitting digital data by the inductive method (pos. 13) must be operated without the help of external control devices, the coupling device (pos. 4 ) can be made in the form of buttons or mode switches.

Zo With the help of a digital data transmission device using the inductive method (item 13), stable reading of information is implemented by reading the emulation of cards with a magnetic stripe (KMS) (according to the standards ISOLES 7810, ISOLES 7811, ISOLES 7812, ISOLES 7813, IBO 8583 and

ISOLES 4909), using card readers with a magnetic strip (for example, ROB-terminals) (item 14), security cards, discount cards, promotions, discount cards and other cards.

At the same time, the maximum operating distance between the inductive coil of the emitter (item 2) and the magnetic head of the reader (item 1) reaches up to 15 cm, and not 1-2 inches, as in the device of the closest analogue (prototype) (41.

Taking into account the use of cards with a magnetic strip in payment systems, the device for transmitting digital data using the inductive method (item 13) is used to transmit digital information, including payment information necessary for non-cash payment transactions.

The communication device (item 4), being connected to the computing or communication system (item 12), is identified as a serial port (standard H5232, ОАВТ), through which commands and data are transferred to the digital data transfer device by the inductive method (item 13).

The user in the interface of the application (launched on a computer system, for example, a smartphone, phone, tablet, etc. (not shown in Fig. 1 - Fig. 5) chooses exactly what information (which is downloaded and which must be transferred) he will use After that, the computer system (item 12 in Fig. 3) transmits data to the computer microsystem (item 5).

The coupling device (item 4) transmits the received data to the signal synthesizer (item 5), after which the data is checked for integrity and prepared (converted into a sequence of frames) for radiation by the inductive coil of the emitter (item 2) to the card reader with a magnetic stripe ( item 14).

After preparing the data, the signal synthesizer (item 5) sends a signal to the driver of the emitter (item b), which allows the use of electricity from the power source. The signal synthesizer (item 5) sequentially lists the frames in the memory, which were converted on the basis of the transmitted data, to the signal synthesizer (item 5) from the computer system (item 12) with fixed time delays specified according to the coding method 11/21.

After the end of the data transmission, the signal synthesizer (item 5) transmits a forbidden signal bo to the emitter driver (item b), as a result of which the power supply to the emitter driver (item b) and its subsidiary devices (i.e., the emitter inductor) (item 2) is cut off and related modules (that is, all child objects).

Based on the received input from the signal synthesizer (item 5), the emitter driver (item 6) forms a signal with clearly defined rising and falling edges of the signal, which is emitted by the connected inductive coil of the emitter (item 2). In fact, the signal from the device (item 13) is sent to all three readers (item 7).

The requirements for interpreting the signals of the three tracks (according to ISO 7811, ISO 7813) differ (checker 1/2/3): - track number one (Igasc 1) has a density of 210 ppi, a 7-bit alphanumeric code; - track number two (track 2) has a density of 75 ppi, a 5-bit digital code; - track number three (Igask 3) has a density of 210 ppi, a 5-bit digital code.

In the proposed technical solution, it is possible to send a signal to only one track at a time, based on the difference in the density and bit rate of coding of each track.

Each track (Igask 1/2/3) is terminated by a checksum of I VO.

In the device for transmitting digital data using the inductive method (item 13), only one track containing the data to be transmitted is emulated at a time. The other two tracks are discarded from the reading process because they do not pass the data integrity check for M-bit encoding and

Ivo

So, for example, to transmit payment data in the digital data transmission device by inductive method (item 13), track number 2 (gask 2), which has the necessary payment data, is emulated.

The inductive coil of the emitter (item 2) is made with a magnetically neutral core acting as a frame exclusively for fixing the conductor (item 18 in Fig. 5) of the inductive coil of the emitter (item 2).

The claimed device for transmitting digital data using the inductive method (item 13) can be implemented as an addition to mobile phones and smartphones. tablets, etc., as well as in the form of an overlay for an electronic device, a protective case, a keyring, a bracelet, etc.

Data transmission (including payment) using the inductive digital data transmission device (item 13) is carried out at a distance between the reading head of the device

From the reading of cards with a magnetic strip (for example, the ROb terminal) (item 14) to the inductive coil of the emitter (item 2) on average about 5-10 cm. The realistic range of data transmission between the receiving and transmitting devices is at a distance of О cm to 15 cm depending on the design of the digital data reader (item 14).

At the moment of data transfer, the smartphone (phone, tablet, etc.) must be held parallel to the gap of the card reader (for example, in the ROB5 terminal) at a recommended distance of 5-10 cm. It is not recommended to move and rotate the device (item 13 ) during data transfer. That is, the axis (item 10) of the emitter coil (item 2) must be located parallel to the card slot (not shown in fig. 1 - fig. 5) of the card reader.

Magnetic stripe card readers (readers) use a three-track magnetic head (according to IOLES 7810). That is, in the housing of the magnetic head of the reader (item 1 in Fig. 5) there are three independent readers (item 7 in Fig. 5) for each track, which are located at a distance much smaller than the distance between the reading head (item 1) and the inductive coil of the emitter (item 2).

In the case of inductive data transfer, the distance between the reader (pos. 7) and the emitter inductive coil (pos. 2) is much greater than the distance between the readers (pos. 7) in the read head housing (pos. 1). For the purpose of explaining the physical representation, let us assume that all three sensors (see 7) are at the same point and do not affect each other.

It was experimentally confirmed that the influence of the three sensors on each other is so small that it can be neglected. Therefore, the above assumption is confirmed.

The reading head (item 1) is located as follows. The plane of the gap of the magnetic reading head (item 9) is oriented perpendicular to the direction of movement of the magnetic stripe (not shown in Fig. 1 - Fig. 5). Therefore, the axis (item 8) of the winding of the constructive inductance (item 19) is located parallel to the direction of supply (item 10) of the magnetic strip (not shown in Fig. 1 - Fig. 5).

Thus, during the passage of the magnetic strip (not shown in Fig. 1 - Fig. 5) in the area of the gap of the head (item 9), a change (gradient) of magnetization occurs. This creates an EMF in the inductance (item 19) of the reading head (item 1), which is amplified by the reader amplifier (not marked in Fig. 1 - Fig. 5) and is transmitted to further processing (decryption).

That is, the magnetic reading head (item 1) registers the gradient of the magnetic field, not its absolute value. So, to transmit a signal, it is necessary to change the magnetic field in the magnetic gap region (item 9) rather quickly. This can be achieved even at a considerable distance from the reading head (Fig. 1), using a more powerful magnetic signal source than magnetic tape, for example, an electromagnet.

The closest physical model of our transmission system ("emitter head") is a "transformer". In fact, the magnetic head of the reader (item 1) and the inductive coil of the emitter (item 3. 2) in our transmission system is a transformer with an unfavorable environment for the transmission of magnetic excitation (due to the significant distance between the windings of the "transformer" and the absence of a common magnetically conductive core (item 18). The inductance coil (item 2) acts as the primary winding, and the magnetic head of the reader (item 1) acts as the secondary winding.

Since according to the I5O 7811 standard, cards with a magnetic stripe are encoded using the 1/2 method, which is a digital encoding method (that is, excessive in favor of signal reversibility), it is enough to determine the characteristics of the signal, on the basis of which the detection, recognition and decoding of the digital signal takes place.

We determined experimentally that a necessary and sufficient condition for decoding a digital signal is the presence of pronounced peaks with a change in polarity and a fixed interval between them depending on the value being encoded (a single frequency (Her) for encoding a logical zero, and a doubled frequency (21) for encoding logical unit).

Given the specifics of a digital signal, there is no need to transmit it completely, i.e. complete repetition of the signal shape, the absence of noise and distortions is optional.

It is necessary to noticeably (on the winding of the magnetic head (pos. 1) transmit peaks of alternating polarity with fixed time intervals (perform 1/2i-encoding). This is achieved due to a sharp (such that it almost tends to instantaneous) switching of the polarity of the supply voltage applied to of the inductive coil of the emitter (item 2) with the corresponding current gain.

The distance of activation (the fact of successful transmission) of the digital signal depends on the intensity of the magnetic field, which the magnetic head (item 1) of the reader will be able to register.

Therefore, the field generated by the emitter coil (pos. 3. 3) must have a significant attenuation (gradient gain) or field inhomogeneity in order for the head (pos. 1) to be able to register the signal.

To increase the distance of the transmission, a more intense field is needed in the source (inductive coil of the emitter - pos. 2). The maximum operating distance is determined by the capabilities of the power source and the initial requirements for mass and dimensional characteristics.

We conducted numerous experiments, as a result of which the essential differences of the elements of the transmission system, which are indicated in the formula of the invention (utility model), were selected.

In the course of conducting experiments with various coils, we determined that there is a practical possibility to transmit digital data at a distance from the inductive coil of the emitter (item 2) to the head gap (item 9) of the reader up to 30 cm between them.

We were able to achieve such a result by using the inductive coil of the emitter (item 2) with a shaped magnetic core (magnetic core of a horseshoe configuration) (not shown in Fig. 1 - Fig. 5). This led to a local increase in the intensity of the magnetic field. At the same time, we were able to register a qualitative increase in the intensity of the magnetic field by indirect signs (by the oscillation of the magneto-active element in the gap of the emitter) and the directional distribution of the field.

However, there is a risk of damage to the reading head when transmitting data using the specified coil with a shaped magnetic core (not shown in Fig. 1 - Fig. 5) at a distance closer to 10 cm. Also, using a coil with a shaped magnetic core, it is necessary to use a more powerful (about 60 Mu) power source.

The use of the specified coil (with a shaped magnetic core) increases the thickness of the device (at least 2 times compared to the claimed device) due to an increase in the power source, the dimensions of the coil, the cooling system of the coil (stabilization of characteristics during radiation) and the electronic harness taking into account (large power) characteristics.

Since one of the requirements for the inductive digital data transmission device (item 13) was compact size and low power consumption, an H-bridge was used to double the effective voltage that controls the inductive coil of the emitter (item 2).

In order to suppress dynamic effects (hysteresis and delay of the signal front, harmonics due to inharmonic oscillations) in the inductance, the inductive coil of the emitter (item 2) was made with a low Q-factor and a magnetically neutral core (item 10). The coil of the prototype of the claimed device has a factor of less than 10 nN/ONt.

In order to reduce the Q-factor, we proposed chaotic winding of the coil (that is, a disorderly arrangement of turns). It was experimentally established that increasing the length of the inductive coil of the emitter (item 2) leads to a deterioration (logarithmically) of the operating range, and a thick (more than 2 mm thick) cylindrical coil does not meet the dimensional requirements. As a result, it was decided to use a flat coil with a winding axis parallel to the plane of the inductive coil of the emitter (item 2).

In connection with this constructive solution, the effect of polarization was experimentally established. It consists in the fact that at low radiation energies, the activation distance was greater when the winding axes of the inductive coil of the emitter (item 2) and the inductance (item 19) in the magnetic head (item 1) were oriented parallel.

In turn, with the perpendicular arrangement of the axes of the coils of the reader (item 8) and the emitter (item 10), the smallest (up to the failure in direct contact with the reader head) range of stable data transmission distances between the inductive coil of the emitter (item 2) and reader (item 7).

With a significant (more than 5 Mu) increase in radiation energy, the polarization effect was not observed. Due to the effect of polarization, the negative influence on the core (see 7) of the reading head (item 1), which is not magnetized, was reduced.

It was established that the noise signal (harmonics and magnetic noise of the environment) has little effect on the transmission of digital data, since the gradient of the magnetic field creates a signal that is much stronger than the noise level and can be registered by less sensitive amplifiers and detectors.

An example of the implementation of the invention.

In the bank/institution/shop (item 15) (fig. 4 shows several items under the number 15, as variants of organizations that can appropriate data (issuers), for example, a bank or a store, etc.) assign the user's credentials (item 16) (fig. 4 shows several items under the number 16, as a variant of the requisites, which, for example, are assigned to payment data, data of discount systems or authorization).

According to the specified details, the device for reading magnetic cards (Fig. 4 shows several pos.

Zo under number 14, as options for magnetic stripe card readers, e.g.

РО5-terminal, reader of discount cards, check-point) (item 14) identifies the user and who can access the funds on the client's account for payment (payment information) or, for example, use an existing discount program or system authorization

Details (pos. 16) are transmitted through a secure channel and stored in a secure area of the software (pos. 17) installed on a computer system (smartphone, phone, tablet, etc.) that supports operation with a digital data transfer device using the inductive method ( 13).

A computer system (smartphone, phone, tablet, etc.) with installed software (item 17) transmits payment information to a digital data transmission device by an inductive method (item 13).

The device for transmitting digital data using the inductive method (pos. 3. 13) transmits digital information to the card reader with a magnetic strip (pos. 19). To transmit digital data, the card reader with a magnetic strip uses the information contained in yashk1, or yashk2, or yashk3, since only one yashk can be emulated at a time.

For example, to perform a payment transaction, the PO5 terminal uses the information contained in Mask2 (according to the IZOLES 7813 standard). The device for transmitting digital data using the inductive method (item 13) transmits information in the form of magnetic field fluctuations, creating a signal in the reading head (item 1), similar to the signal of the magnetic strip (in fig. 1 - fig. 5 is not shown) of a payment card (in Fig. 1 - Fig. 5 is not shown).

That is, in addition to payment information, any digital information can be transmitted through the inductive digital data transmission device (item 13), which works on the basis of the appropriate inductive digital data transmission method.

Thus, cards with a magnetic strip are not used for digital data transmission using the digital data transmission device by the inductive method (13), which works on the basis of the appropriate method, including for payment operations with ROBb terminals. At the same time, all digital (including payment) information is transmitted through the digital data transfer device by the inductive method (item 13) from the computer system with installed software (item 17).

Several different data (details) can be recorded in a computer system with installed software (item 17): for example, data of several accounts, different payment organizations, including banks. Before transferring data, the user of the claimed device (not shown in Fig. 1-5) must select data (details) (for example, an account) that will be transferred (for example, a payment will be made).

A computer system with installed software (item 17) contains an authorization and identification system that ensures the security of storage and transmission of digital information. At the same time, the device itself for transmitting digital data using the inductive method (item 13) does not store digital information, but only serves as a means of transmitting it. This makes it impossible to use digital (primarily payment) information by any user other than the authorized user.

Also, in the declared system, the op-e-e-rip function is implemented, which contributes to information security even in case of unauthorized access to payment data.

The client applies to the organization authorized to issue cards to obtain information about the client's account, which contains digital information and allows for data transmission, for example, to perform payment operations during interaction with card readers with a magnetic stripe, for example, ROB5 terminals.

The same information, including about the client's account, about all payment details and other characteristics of the account, which the issuing organization records on cards with a magnetic strip, are transmitted through a secure channel to a secure area of the software, to a computer system (according to 3. 12), which interacts with the digital data transmission device by the inductive method (item 13).

A computer system with installed software (item 17) transmits the relevant (including payment) information contactlessly to a card reader with a magnetic stripe (for example, a POS terminal) via the inductive digital data transmission device (item 13) without physical use of a card with a magnetic stripe during data transfer (for example, during calculations).

Industrial application.

The advantages of the proposed technical solution are:

Zo - absence of mechanical and magnetic wear of the head of the reading device; - low electricity consumption (economy is from 1595 and above) in comparison with non-contact analogues and the prototype; - the possibility of working from O5VOYU; - provision of normalized (optimized, free of redundancy) radiation power, which complicates third-party reading of data (that is, contributes to strengthening the security of transactions); - ensuring minimization (that is, reduction to the minimum necessary level) of energy consumption and mass-dimensional characteristics due to the standardization of radiation power; - synthesis of exclusively necessary signal characteristics by means of a computer microsystem; - implementation of module consumption management in different operating modes of the device, which saves electricity and leads to an increase in the service life without recharging.

Also, the advantage of the device for transmitting digital data using the inductive method (item 13) is that it does not store digital (including payment) information, which makes it a secure tool. The device for transmitting digital data using the inductive method (item 13) also does not contain a magnetic card reader, which prevents unauthorized dissemination of protected information.

The device for transmitting digital data using the inductive method (item 13) as part of the system of the same name is portable, compact and energy-efficient compared to existing non-contact analogs and prototypes. This allows it to be used within the framework of the electricity consumption standard 0О582.0 and О5Void. According to the standards, the power provided to the consumer is up to 2.5 M (BM, 0.5 A).

The system of inductive transmission of digital (payment) data makes it possible to dynamically generate data with available computing/communication means for identification in (payment) systems such as PO5-terminal.

Thus, the implementation of the claimed invention (utility model), which meets the requirements and demands of the modern market, provides the possibility of servicing all types of transactions and various types of payment accounts. because Sources of information:

1. Tkapzasiyup saga tadpeiiys ziire etshaiyog (simulator of the magnetic strip of the payment card! (cards for transactions). Patent 05 4.791.283. IPC (206K7/08. Application 05 870.005. Application. 03.06.1986. Publ. 13.12.1988. 2. Rautepi themselves app teiiod5 (payment card and method). Application publication

MO2013181281. IPC SO6K 19/07 (2006.01). Date of publication 05.12.2013. Priority date: 05/29/2012.

З. Publication of the application M/O 2011103160. IPC SOb6K 19/07 (2006.01). Date of publication 08/25/2011. Priority date: 16.02.2010. 4. Buvivet apa teinod og a razerapa peapieid tadepiis vigire daia iapotiTseg (System and method of operation of the frequency band transmitter of the near field data of the magnetic strip). Patent

OB 8628012. IPC p06K7/08 (2006.01). Date of publication 01.14.2014. Priority date:

Claims (1)

20.01.2013. FORMULA OF THE INVENTION 1. Inductive digital data transmission system, containing an inductive digital data transmission device, a receiving device, a computing system, communication systems, as well as a connection device with the above systems, while the inductive digital data transmission device contains an emitter driver and an inductor, made in the form of an emitter inductive coil, which is characterized by the fact that a signal synthesizer containing a real-time computing microsystem and a coupling device is introduced into the inductive data transmission device, while the signal synthesizer is connected to the emitter driver, which is connected to the inductor, and made with the possibility of switching the polarity of the supply voltage applied to the inductive coil of the emitter, which is made with the possibility of transmitting digital data to the receiving device in the form of a magnetic reader head at a distance of up to 15 cm, with simultaneous amplification of the current in the inductor. From 2. The system according to claim 1, which is characterized by the fact that the real-time computing microsystem of the signal synthesizer (5) is made with the possibility of excluding the balancing of the computing load. 3. The system according to claim 2, which is distinguished by the fact that the real-time computing microsystem of the signal synthesizer (5) is made with the possibility of sequentially setting the value of the current frame of the signal on the outputs of a two-bit digital bus with a signal reproduction frequency in the range from 0 N? to 4 KN?I. 4. The system according to claim 1, which is characterized by the fact that as a driver of the emitter (6), the system contains a high-frequency switch with an average point of consumption and stabilization of the voltage of the average point relative to the upper and lower supply points. 5. The system according to claim 1, which differs in that the connection device (4) with computing and communication systems (12) is made with the possibility of transmitting data and control commands of the digital data transmission device by the inductive method (13) and with the possibility of checking the status of this device ( 13). 6. The system according to claim 5, which differs in that the connection device (4) with computing and communication systems (12) is made with the possibility of supporting standard data transmission methods, such as Viseiosii, OAVT, 5232, OV and others. 7. The system according to claim 5, which differs in that the connection device (4) is made in the form of buttons or mode switches. 8. The system according to claim 1, which is characterized by the fact that the flat core (18) of the inductor (2) is made of magnetically neutral or magnetically conductive material. 9. The system according to claim 8, which differs in that the flat core (18) of the inductor (2) is made of an oblong shape with a rectangular cross-section. 10. The system according to claim 8, which is characterized by the fact that the flat core (18) of the inductor (2) is made of an oblong rectangular section with rounded edges or with a cross section in the form of broken faces. 11. The system according to claim 1, which differs in that the winding of the inductor (2) is made of conductive materials with isolation of each turn from neighboring turns. 12. The system according to claim 1, which is characterized by the fact that the device for transmitting digital data using the inductive method (13) is made with the possibility of emulating one track number 1 (track 1). 13. The system according to claim 1, which is characterized by the fact that the device for transmitting digital data using the inductive method (13) is made with the possibility of emulating one track number 2 (track 2), which contains the necessary payment data in case of payment operations. 14. The system according to claim 1, which is characterized by the fact that the device for transmitting digital data using the inductive method (13) is made with the possibility of emulating one track number C (step 3). 15. The system according to claim 1, which is characterized by the fact that the device for transmitting digital data using the inductive method (13) is made in the form of an overlay to an electronic device. 16. The system according to claim 1, which is characterized by the fact that the device for transmitting digital data using the inductive method (13) is made in the form of a protective cover for an electronic device. 17. The system according to claim 1, which differs in that the device for transmitting digital data using the inductive method (13) is made in the form of a key ring. 18. The system according to claim 1, which is characterized by the fact that the device for transmitting digital data using the inductive method (13) is made in the form of a bracelet. 19. The system according to claim 1, which differs in that the inductive coil of the emitter (2) is made with a Q factor in the range from 0.0001 to 1200 pN/ONt. 20. The system according to claim 19, which is characterized by the fact that the inductive coil of the emitter (2) is made with an unregulated arrangement of turns. 21. The system according to claim 19, which is characterized by the fact that the inductive coil of the emitter (2) is made with an orderly arrangement of turns. 22. The system according to claim 1, which differs in that the computing system (12), for example, in the form of a mobile device, is equipped with software (17) implemented on the basis of the algorithm for safe storage of details (16). 23. The system according to claim 1, which differs in that the software (17) is implemented on the basis of the authorization and identification algorithm. 24. The system according to claim 1, which is distinguished by the fact that the computer system (12) and the bank's receiving system (15) are software and hardware designed with the possibility of simultaneous implementation of the operation-reply service when implementing the cryptofunction algorithm. 25. The system according to claim 1, which differs in that the device for transmitting digital data using the inductive method (13) is made with the possibility of generating a signal when switching the polarity. From 26. The system according to claim 1, which differs in that the emitter driver (b) is made according to the H-bridge scheme. 27. The system according to claim 24, which differs in that the elements of the operator service are located in the computer system (12) and the receiving system (15) of the bank. ve i still a i M ech Fig: pi : ! | : in 5 K- 2 Fig. 2 nn nene H. H. t p i! N tim, that N N POPU and M: kash Mt, y: PKU OTAK: that IK insti MO KOHZ ot: evzii 14 I HARVEST tallow: h mk more; c r : -3 : - se ! eat 15 by 1: 4 her NI 3 N I i N i NI NI how ! - NOT 1: 1-, NI: NN those! me M TEosnnnnnuo 17 i A i KK nn | ШИ НВ 1: I НИ r. : ! : НЯ 1: : : : Ни НН Н : НЯ их: : Н : Ko: Н N : Tony I 10110011... minya Uy TM Fig. Z N N N : ! Н Н Н Н : и : и 35 Н LA: rides E MM : pesseserge | In E her: ! 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