KR20100001477A - Portable terminal having non-contact wireless power supply/rf authentication function, wireless power supply and rf authentication method thereof - Google Patents

Abstract

PURPOSE: A portable terminal having a non-contact wireless power supply/RF authentication function, a wireless power supply and RF authentication method thereof are provided to implement RF wireless authentication and non-contact wireless power supply through one interface unit. CONSTITUTION: A second coil(132) transmits and receives a radio signal through an inducement of induced electromotive force with a first coil(114). By responding to an access recognition signal, a power generation block(112) transmits the terminal condition information for power supply generation to an external terminal(130) through the second coil. A power processor(138) converts a radio signal for power source into a DC(Direct Current) power source, and a signal processing block(116) transmits RFID authentication information corresponding to an RF recognition signal to the external terminal through the second coil.

Description

PORTABLE TERMINAL HAVING NON-CONTACT WIRELESS POWER SUPPLY / RF AUTHENTICATION FUNCTION, WIRELESS POWER SUPPLY AND RF AUTHENTICATION METHOD THEREOF}

The present invention relates to a contactless wireless power supply and authentication technique, and more particularly, to a contactless suitable for performing contactless wireless power supply and RF authentication between an external terminal (power transmission pad or RFID reader) and a portable terminal through a single path interface. The present invention relates to a mobile terminal having a wireless power supply / RF authentication function and a wireless power supply and RF authentication method thereof.

As is well known, portable devices, such as mobile phones, DMB terminals, satellite terminals, PDAs, PMPs, MP3s, MP3Ps, etc., have built-in rechargeable batteries, which are equipped with a charging contact terminal (contact electrode). Contact charging method using a holder having a connection or using a connection to a USB port provided in a computer is mainly used.

However, in the conventional method of charging a mobile terminal using a contact charging method, it may take a lot of inconveniences such as fixing the mobile terminal to a charging cradle or connecting to a USB port of a computer through a USB connector. There was no choice but to.

In particular, in the case of such a contact charging method, a problem of electric shock due to contact, a problem of externally damaged contact electrodes due to external factors, a problem of poor contact due to dust, and physical contact It was accompanied by various problems such as the problem of device damage.

As one method for improving the above problems, recently, a technology for a non-contact charging method, for example, using a separate transformer has been developed and applied to portable terminals instead of a contact charging method.

As described above, in the non-contact charging method using a separate transformer or the like, the primary coil module is built in the contactless charger side and the secondary coil module is built in the battery pack side of the mobile terminal. To charge the battery of the mobile terminal.

Therefore, the portable terminal users can charge the battery built in the portable terminal owned by the simple method using the non-contact charging method. Of course, not only the battery charging but also the non-contact power supply may provide operating power required by the portable terminal.

On the other hand, as part of a contactless recognition technique (wireless authentication), a wireless communication method using an RFID tag including an RFID reader and an RFID antenna has become common and is used in various fields as an electronic payment means and a recognition means. The application of the RF wireless communication method to the portable terminal has been widely spread. Here, the wireless authentication process is performed through the exchange of RF signals between the RFID reader and the RFID tag. For this purpose, information for recognition of the terminal is prestored in the internal memory of the RFID tag, and the RFID tag transmits the terminal recognition information to the RF. When output as a signal, wireless authentication is performed in a procedure in which the RFID reader receives and confirms it.

Accordingly, portable terminal users with a contactless RFID tag equipped with an RFID antenna may be provided with a wireless authentication service such as electronic payment, identity recognition (access authentication), etc., through a contactless wireless communication method.

That is, in the case of a portable terminal having a built-in non-contact charging module using a separate transformer or the like and having an RFID tag embedded therein, the user of the portable terminal can contactlessly charge the battery built in the portable terminal and perform wireless communication with the RFID reader. Through wireless authentication services such as electronic payment, identity recognition, etc. can be provided contactlessly.

On the other hand, in the case of a conventional portable terminal provided with a non-contact charging module and an RFID tag to receive a non-contact charging service (or a non-contact power supply service) and a non-contact electronic payment service, a power receiving means for contactless wireless charging (eg, a split transformer) Since the secondary side of the coil) and the interface means (RFID chip including the RFID tag antenna) for RF authentication must be provided separately, there is a problem that a space limitation for this occurs.

In addition, the conventional portable terminal has a problem in that the price of the portable terminal product is increased by separately providing means for receiving power for wireless charging and RF communication interface means.

The present invention, according to one aspect, the secondary side coil of the wireless transmission and reception means for transmitting and receiving radio signals through the induced electromotive force with the primary side coil of the wireless transmission and reception means provided in the external terminal, and the induced electromotive force in the secondary side coil Means for transmitting terminal condition information for supplying power generation to the external terminal through the secondary coil in response to the received access recognition signal when the proximity recognition signal of the portable terminal is received through the induction, and the secondary coil Power processing means for converting and outputting a power source wireless signal through the induced electromotive force in the output to a DC power source that can be used in a mobile terminal, and when the RF recognition signal is received through the secondary coil, the received RF And a means for extracting RFID authentication information corresponding to a recognition signal and transmitting the RFID authentication information to the external terminal through the secondary coil. It provides a portable terminal having a wireless power supply / RF authentication.

According to another aspect, the present invention provides a power source to the portable terminal by using induced electromotive force induced between the primary coil of the wireless transmission / reception means provided on the external terminal side and the secondary coil of the wireless transmission / reception means provided on the portable terminal side. A wireless power supply and RF authentication method of a mobile terminal for selectively supplying or performing RFID authentication of the mobile terminal is provided.

According to yet another aspect, the present invention is directed to the portable terminal by using induced electromotive force induced between the primary coil of the wireless transmission and reception means provided on the external terminal side and the secondary coil of the wireless transmission and reception means provided on the portable terminal side. Provided are a wireless power supply and an RF authentication method of a portable terminal which simultaneously performs power supply and RFID authentication of the portable terminal.

According to another aspect of the present invention, there is provided a first process of inducing induced electromotive force from a primary coil of a wireless transmission / reception means provided on an external terminal side to a secondary coil of a wireless transmission / reception means of a portable terminal, and the induced induced electromotive force. When the wireless signal is a wireless signal for the power source of the portable terminal, a second process of performing a power supply mode for converting the induced induced electromotive force into a DC power available to the portable terminal and outputs; When the wireless signal is the RF recognition signal of the portable terminal, the wireless terminal of the portable terminal comprising a third step of performing the RF authentication mode to extract the corresponding RFID authentication information and transmit it to the external terminal side through the secondary coil Provides power supply and RF authentication method.

The present invention can simplify the circuit configuration for the wireless power supply and the RF authentication by realizing the non-contact wireless power supply to the portable terminal and the RF wireless authentication of the portable terminal through one interface means composed of wireless transmission and reception means. As a result, the spatial constraints of the circuit configuration can be effectively solved.

In addition, the present invention can realize the cost reduction of the product for this by realizing the non-contact wireless power supply to the portable terminal and RF wireless authentication of the portable terminal by one wireless transmission and reception means.

Summary of the Invention The technical gist of the present invention is different from the above-described conventional method of separately providing a power receiving means (separable transformer) for contactless wireless charging or power supply and a communication interface means (RFID antenna) for RF authentication. Alternatively, a single interface consisting of a wireless transmission / reception means (for example, a separate transformer, etc.) consisting of a primary coil (external terminal) and a secondary coil (portable terminal) for supplying contactless wireless power to the portable terminal and RF authentication of the portable terminal. By providing alternatively or simultaneously through the (single path interface) means, the present invention can effectively solve the problems in the conventional manner through this technical means.

In more detail, the portable terminal according to the present invention receives a power supply wireless signal (power supply mode) that is wirelessly transmitted from a power supply pad through a single wireless transmission / reception means of a secondary coil or through an RF interface with an RFID reader. RF authentication service can be provided (RF authentication mode). That is, by bringing the portable terminal of the present invention closer to the power supply pad, power (battery charging power or operating power of the portable terminal) required by the portable terminal can be wirelessly provided, and the portable terminal of the present invention can be connected to the RFID reader. Proximity can selectively receive RFID authentication services such as electronic payment, mobile terminal verification, ID verification, and the like.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

First, a portable terminal (portable terminal having a non-contact wireless power supply / RF authentication function) according to the present invention is provided in a non-contact manner to supply power required by the portable terminal in proximity to a power supply pad functioning as an external terminal (power supply. Mode) or an RFID authentication service provided in proximity to an RFID reader functioning as an external terminal (RF authentication mode). Hereinafter, a series of processes of performing a power supply mode with reference to FIGS. 1 and 3 will be described. Explain.

1 is a block diagram of a non-contact power supply system applying a portable terminal having a non-contact wireless power supply / RF authentication function to a power discharging pad according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a power source for generating power and functioning as an external terminal for wireless transmission in a non-contact manner, and wirelessly supplying power (battery charging power or terminal operating power) required by the portable terminal 130 side of the present invention. The output pad 110 includes a power generation block 112, a primary coil 114 of a wireless transmission / reception means, a signal processing block 116, a control block 118, and the like, and the portable terminal 130 of the present invention And a secondary coil 132, a signal processing block 134, a control block 136, a power supply processing block 138, and the like of the wireless transmission / reception means. Here, the portable terminal 130 includes, for example, a mobile phone, a DMB terminal, a satellite terminal, a PDA, a PMP, an MP3, an MP3P, a digital camera, a camcorder, a notebook computer, an active RF card, and the like.

First, the power generation block 112 in the power supply pad 110 includes, for example, a power input terminal, a rectifier circuit, a resonance circuit, and the like, and a power generation control signal provided from the control block 118, that is, a preset operating frequency. A high frequency AC power is generated based on a power generation control signal including a clock signal for power generation having a resonance frequency, and the high frequency AC power is generated to the primary coil 114 of the wireless transmission / reception means. Delivered. Here, the resonance frequency is a frequency at which the L-C resonance conditions on the transmission (pad) side and the reception (terminal) side are optimal.

In addition, the power generation block 112, in response to the proximity detection control signal provided from the control block 118, so that the portable terminal 130 can detect the proximity to a predetermined position in the pad, one of the wireless transmission and reception means. Approach detection power for detecting the terminal approach by induced electromotive force in the secondary coil 114 is generated in a predetermined period and transmitted to the primary coil 114 of the wireless transmission and reception means.

At this time, the access sensing power delivered to the primary side coil 114 of the wireless transmission / reception means, when the portable terminal 130 is aligned to the proximity position of the pad (proximal position of the power supply possible), the portable terminal 130 side It is for inducing induced electromotive force to the secondary coil 132 of the provided wireless transmission and reception means, when the induced electromotive force is induced to the secondary coil 132 of the wireless transmission and reception means by the approach sensing power supply (that is, the secondary coil When the access recognition signal is received through the mobile terminal 130, the mobile terminal 130 withdraws (or generates) the terminal condition information and transmits the power supply pad 110 through the induced electromotive force induced between the secondary coil 132 and the primary coil 114. To the radio side. Here, the terminal condition information may be, for example, a battery capacity, a battery charge state, a battery type, a temperature, an operating state of the portable terminal, a required operating power source according to the current mode of the portable terminal, and the like.

The control block 118 includes, for example, a microprocessor for performing overall operation control of the power discharging pad, and includes a microprocessor for periodically generating the access sensing power required to detect the proximity of the portable terminal to a predetermined position in the pad. The control signal is generated and provided to the power generation block 112, and when the terminal condition information is transmitted (received) from the signal processing block 116 to be described later, a control signal for generating power corresponding to the condition information is generated. It provides a function such as providing to the power generation block (112).

Next, the primary coil 114 of the wireless transmission / reception means has a coil structure wound around, for example, a radio signal (ie, induced from the secondary coil 132 of the wireless transmission / reception means provided in the portable terminal 130 side). And receives the terminal condition information signal) and transmits it to the signal processing block 116, and when the access detection power (micro AC power) or the AC power (high frequency AC power) for wireless transmission is transmitted from the power generation block 112. Based on the induced electromotive force, this is induced to the secondary coil 132 of the wireless transmission / reception means provided on the portable terminal 130 side (the transmission of the radio signal for recognition of access or power).

Then, the signal processing block 116 is a radio signal from the portable terminal 130 side received through the primary coil 114 of the radio transmission and reception means, that is, a radio signal for the terminal condition information (secondary coil of the radio transmission and reception means). And demodulate and decode the original signal before modulation, and transmit the decoded terminal condition information to the control block 118.

Referring back to FIG. 1, the secondary coil 132 of the wireless transmission / reception means provided on the portable terminal 130 side of the present embodiment has a coil structure wound, for example, and is provided on the power supply pad 110 side. By transmitting and receiving a radio signal (access recognition or power radio signal, terminal condition information radio signal, etc.) through the induced electromotive force with the primary side coil 114 of the radio transmission and reception means, 1 on the power supply pad 110 side. When the induced electromotive force (access recognition signal) corresponding to the approach sensing power source is induced from the vehicle side coil 114, it is received and transmitted to the signal processing block 134, and corresponding to the access recognition signal from the signal processing block 134. When the terminal condition information (radio signal for the encoded and modulated terminal condition information) is transmitted, the induced electromotive force is generated correspondingly, and induced (wireless transmission) to the primary coil 114 on the power supply pad 110 side.When the induced electromotive force (induction electromotive force for power supply) corresponding to the high frequency AC power is induced from the primary coil 114 on the side of the power supply pad 110, it is received (receiving a wireless signal for power supply) to the power processing block 138. Provides functions such as delivering.

Next, when the approach recognition signal derived from the secondary coil 132 of the wireless transmission / reception means is transmitted, the signal processing block 134 demodulates and decodes the original access signal before modulation, and controls the decoded access recognition signal. Transfer to block 136. In addition, when the terminal condition information data corresponding to the access recognition signal is received from the control block 136, the signal processing block 134 encodes the signal and modulates it into a radio signal which can be transmitted wirelessly. Provides functions such as forwarding to.

In addition, the control block 136 includes, for example, a microprocessor for performing overall operation control of the portable terminal, and when the access recognition signal is received from the signal processing block 134, corresponding terminal condition information (supply power supply). Terminal condition information for generation control) is generated (or withdrawn) and transmitted to the signal processing block 134, and is required for processing the received radio signal for power when the portable terminal performs the power supply mode based on induced electromotive force. To generate various control signals and provide them to the power supply processing block 138. Here, the terminal condition information may selectively include, for example, a battery capacity, a state of charge of the battery, a battery type, a temperature, an operating state of the portable terminal, a required operating power according to the current mode of the portable terminal, and the like. The condition information may be information stored in an internal memory provided from various sensors (not shown) or information stored in a memory.

Finally, the power supply processing block 138 optionally includes, for example, a rectifying circuit, a filtering circuit, a voltage / current control circuit, and the like, based on various control signals provided from the control block 136. It performs the process of rectification, filtering, etc. on the power source wireless signal (high frequency AC power source) received through the secondary coil 132, and converts the power source wireless signal into a DC power source suitable for use in a mobile terminal. . Here, the output DC power may be provided as charging power of a battery (not shown) built in the portable terminal or may be provided as an operating power of the portable terminal.

Next, a series of processes for supplying power required to the portable terminal side according to the present embodiment will be described based on the non-contact power supply system having the above-described configuration.

3 is a power supply mode in which a mobile terminal receives and processes power required from a power supply pad through induction of induced electromotive force between a primary side coil and a secondary side coil of a wireless transmission / reception means according to an exemplary embodiment of the present invention. It is a flowchart showing the process of doing so.

Referring to FIG. 3, the power discharging pad 110 generates an access detection power (micro AC power) at a predetermined period while performing the standby mode (steps 302 and 304), and the portable terminal 130 is set to a predetermined schedule. When approaching by a distance, the induced electromotive force (1) from the primary coil 114 of the wireless transmission and reception means provided on the power transmission pad 110 side to the secondary coil 132 of the wireless transmission and reception means provided on the portable terminal 130 side ( Induced electromotive force for approach recognition), i.e., an access recognition signal, is received (step 306).

As such, the access recognition signal received through the secondary coil 132 of the wireless transmission / reception means is transmitted to the signal processing block 134 to undergo a demodulation and decoding process of the original signal, and then to the control block 136. do.

In response, the control block 136 generates or retrieves the terminal condition information and transmits the terminal condition information to the signal processing block 134. The signal processing block 134 encodes the terminal condition information and modulates the terminal condition information into a wireless transmittable signal. It transmits to the secondary coil 132 of the transmission and reception means, and as a result, the radio signal corresponding to the terminal condition information is transmitted from the secondary transmission coil 132 of the wireless transmission and reception means. By being induced by the vehicle side coil 114, the terminal condition information is wirelessly sent out to the power supply pad 110 (step 308). Here, the terminal condition information is information for supply power generation control on the power discharging pad 110 side, for example, the battery capacity, the state of charge of the battery, the form of the battery, the temperature, the operating state of the portable terminal, the current mode of the portable terminal. It may optionally include a required operating power source according to.

Subsequently, in the signal processing block 116 on the power supply pad 110 side, signal processing (demodulation, decoding, etc.) on the terminal condition information received through the primary coil 114 of the wireless transmission / reception means. After performing, the decoded terminal condition information is transmitted to the control block 118.

Next, in the control block 118, a control signal for generating power corresponding to the terminal condition information transmitted from the signal processing block 116, that is, a clock signal for generating power having a preset operating frequency (resonant frequency). Generate and transmit a power generation control signal to the power generation block 112 (step 310). Here, the resonance frequency is a frequency at which the L-C resonance conditions on the transmission (pad) side and the reception (portable terminal) side are optimal.

In response to this, the power generation block 112 generates an AC power of high frequency having a predetermined operating frequency (resonance frequency) based on the power generation control signal provided from the control block 118, and the AC power generated in this way. By being transmitted to the primary side coil 114 of the radio transmission / reception means, the induced electromotive force for power is induced to the secondary side coil 132 of the radio transmission / reception means provided on the portable terminal 130 side (step 312).

Therefore, the wireless signal for power induced by the induced electromotive force from the primary coil 114 of the wireless transmission / reception means to the secondary coil 132 of the wireless transmission / reception means is transferred to the power processing block 138 to rectify, filter, remove noise, and the like. The same process converts the DC power suitable for use in the portable terminal, and the converted DC power is transferred to the output side to be used as a charging power for a battery (not shown) built in the portable terminal or an operating power supply of the portable terminal. (Step 314).

That is, according to the present embodiment, when the access recognition signal is received (induction of induced electromotive force for recognition of access) through the secondary coil 132 of the wireless transmission and reception means provided in the mobile terminal 130, the portable terminal 130 The terminal generates the condition information at the side and transmits to the power supply pad 110 side wirelessly, and in response to the power wirelessly transmitted through the primary coil 114 of the wireless transmission and reception means provided on the power supply pad 110 side When the signal is received by the secondary coil 132 of the wireless transmission and reception means provided on the portable terminal 130 side (induction of the induced electromotive force for the power source), a power supply for converting it into a DC power suitable for use in the portable terminal and outputting it. Mode can be performed.

Next, a series of processes for performing RF authentication using the mobile terminal according to the present invention will be described in detail with reference to FIGS. 2 and 4.

2 is a block diagram of an RF authentication system in which a portable terminal having a non-contact wireless power supply / RF authentication function is applied to an RFID reader according to an exemplary embodiment of the present invention.

Referring to FIG. 2, a conventional RFID reader 120 functioning as an external terminal supporting an RF authentication mode includes one of a control block 122, an RF reader block 124, and a wireless transmission / reception means (eg, a separate transformer, etc.). The mobile terminal 140 of the present invention includes a secondary side coil 126 and the like, and includes a secondary side coil 142, a signal processing block 144, a control block 146, a power processing block 148, and the like of a wireless transmission / reception means. It includes. Here, the portable terminal 140 includes, for example, a mobile phone, a DMB terminal, a satellite terminal, a PDA, a PMP, an MP3, an MP3P, a digital camera, a camcorder, a notebook computer, and the like.

First, the control block 122 of the RFID reader 120 includes, for example, a microprocessor for performing overall operation control of the RFID reader, and the portable terminal is approached to a predetermined position in the reader (for example, for RFID authentication). Generate a control signal for the periodic generation of the RF recognition signal required to detect the approach) and provide it to the RF reader block 124, and the RFID authentication information is received through the primary coil 126 of the wireless transmission / reception means (RF authentication). When the induced electromotive force is induced), it detects this and generates various control signals for performing an authentication procedure using RFID, and provides a function such as transferring to the RF reader block 124.

Next, the RFID reader block 124 generates an RF recognition signal (RF recognition signal for access recognition of the mobile terminal) at predetermined intervals in response to the control signal from the control block 122 to generate a primary side of the wireless transmission / reception means. The induced electromotive force corresponding to the RFID authentication information is transmitted from the secondary coil 142 provided on the portable terminal 140 side to the primary coil 126 of the wireless transmission / reception means. When the signal is received), the authentication process is performed by demodulating and decoding the original signal before modulation and transmitting the decoded RF authentication information to a remote authentication system (or authentication server) not shown. Here, the RF authentication information includes a unique ID (or encrypted ID) information or the like given to the mobile terminal or the mobile terminal user. Such RF authentication is optional for an electronic payment service, a mobile terminal authentication service, an ID verification service, and the like. It can be used as.

The primary coil 126 of the wireless transmission / reception means has a coil structure wound, for example, based on induced electromotive force when the RF recognition block is transmitted from the RF reader block 124. Authentication to the secondary side coil 142 of the wireless transmission and reception means provided in the (receives radio signal for RF recognition), and is induced from the secondary side coil 142 of the wireless transmission and reception means provided on the portable terminal 140 side It provides a function (support of the RF authentication mode), such as receiving the radio signal (that is, RFID authentication information) to the RF reader block 124.

Referring again to FIG. 2, although each component constituting the mobile terminal 140 of the present embodiment is described with a different reference numeral from each component constituting the mobile terminal 130 shown in FIG. 1, induced electromotive force The function of the power source processing block 148 for processing the wireless signal for power received by the secondary coil 142 of the wireless transmitting and receiving means and the induced electromotive force by the primary side coil 126 of the wireless transmitting and receiving means by It is substantially the same as the function of each corresponding component shown in FIG.

However, the signal processing block 144 and the control block 146 are the same as the corresponding components shown in Fig. 1 in terms of their configuration, but in detail (i.e., a function for performing the RF authentication mode). Have a difference. Therefore, hereinafter, the present embodiment will be described, focusing on constituent members having differences in functional aspects.

First, the secondary coil 142 of the wireless transmission and reception means provided on the portable terminal 140 side of the present embodiment is induced induced electromotive force with the primary coil 126 of the wireless transmission and reception means provided on the RFID reader 120 side. Transmits and receives a radio signal (a radio signal for RFID recognition, a radio signal for RFID authentication, etc.), and receives the induced electromotive force corresponding to the RF recognition signal from the primary coil 126 on the RFID reader 120 side. To the signal processing block 144, and generates an induced electromotive force corresponding to the RFID authentication information (modulated RFID authentication information) from the signal processing block 144, thereby generating a primary coil on the RFID reader 120 side. 126 provides a function such as organic (wireless transmission).

Next, when the RF recognition signal transmitted from the secondary coil 142 of the wireless transmission / reception means is transmitted, the signal processing block 144 demodulates and decodes the original RF signal before modulation, and controls the decoded RF recognition signal. Forward to block 146. Further, when the RFID authentication information corresponding to the RF recognition signal is received from the control block 146, the signal processing block 144 encodes it, modulates it into a radio transmission signal, and then sends it to the secondary coil 142 of the wireless transmission / reception means. Provides functions such as delivering.

In addition, the control block 146 includes, for example, a microprocessor for performing overall operation control of the portable terminal, and when the RF recognition signal is received from the signal processing block 144, corresponding RFID authentication information is extracted ( For example, it may be withdrawn from the memory (not shown) and transferred to the signal processing block 144.

In addition, the power processing block 148 performs substantially the same function as the power processing block 138, which is a corresponding component shown in FIG. 1, and is specially designed for performing the RF authentication mode according to the present embodiment. Since the function is not performed, detailed description thereof will be omitted.

Next, a series of processes for performing RF authentication (RF authentication mode) for the mobile terminal according to the present embodiment will be described based on the RF authentication system having the above-described configuration.

4 is a flowchart illustrating a process of performing RF authentication for a mobile terminal through an RFID reader according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the RFID reader 120 generates an RF recognition signal (micro AC power) at predetermined intervals while performing the standby mode (steps 402 and 404), and the portable terminal 140 presets the predetermined schedule. When approaching by a distance, the induced electromotive force (RF) from the primary coil 126 of the wireless transmission and reception means provided in the RFID reader 120 side to the secondary coil 142 of the wireless transmission and reception means provided in the portable terminal 140 side. Recognition induced electromotive force) is induced, i.e., an RF recognition signal is received (step 406).

Next, the RF recognition signal received through the secondary coil 142 of the wireless transmission and reception means is transmitted to the signal processing block 144 to undergo a demodulation and decoding process to the original signal, and then to the control block 146. Delivered.

In response, the control block 146 extracts the RFID authentication information corresponding to the RF recognition signal from the memory (not shown) and transmits the RFID authentication information to the signal processing block 144, and the signal processing block 144 encodes the terminal condition information. After modulating into a radio transmittable signal, the signal is transmitted to the secondary coil 142 of the radio transmission / reception means. Here, the RF authentication information includes a unique ID (or encrypted ID) information or the like given to the portable terminal or the portable terminal user.

As a result, the radio signal corresponding to the RFID authentication information is induced from the secondary coil 142 of the radio transmission / reception means to the primary coil 126 of the radio transmission / reception means provided on the RFID reader 120 side, whereby the RFID authentication information is generated. Radio is sent out to the RFID reader 120 side (step 408).

Subsequently, in the RF reader block 124 on the RFID reader 120 side, according to the control from the control block 126 that has recognized the reception of the RFID authentication information, it is received through the primary coil 126 of the wireless transmission / reception means. The RFID authentication information is demodulated and decoded into the original signal before modulation (step 410), and the authentication procedure is performed by transmitting the decoded RF authentication information to a remote authentication system (or authentication server) not shown. (Step 412).

Therefore, according to the present embodiment, when the RF recognition signal is received (induction of the induced electromotive force for RF recognition) through the secondary coil 142 of the wireless transmission and reception means provided in the mobile terminal 140, the mobile terminal 140 At the side, the RFID authentication information may be extracted and wirelessly transmitted to the RFID reader 120. In response, the RFID reader 120 may perform an RF authentication mode supporting an authentication procedure based on the RFID authentication information. .

That is, according to the present embodiment, a wireless terminal using a primary side coil and a secondary side coil of a wireless transmission / reception means, which is a power supply path from a power supply pad, without having a portable terminal having an RFID chip having an RFID antenna as in the related art. The RF interface enables the RF authentication process. In other words, the portable terminal of the present invention can realize not only power supply to the portable terminal but also RF authentication of the portable terminal through a wireless interface (a single path interface with an external terminal) using only the secondary coil forming part of the wireless transmission / reception means. Can be.

Meanwhile, in the preferred embodiment of the present invention, the portable terminal of the present invention is connected to the portable terminal through a single path interface (that is, a single path interface using induced electromotive force between the primary coil and the secondary coil of the wireless transmission / reception means). Although the present invention has been described as selectively performing any one of power supply (power supply mode) and RF authentication (RF authentication mode) of the mobile terminal, the present invention is not necessarily limited thereto, and a single path interface with an external terminal is provided. Through the power supply to the portable terminal and can be designed to perform the RF authentication of the portable terminal at the same time, of course.

That is, by having both the component supporting the power supply mode and the component supporting the RF authentication mode on the external terminal side, a single path interface between the external terminal and the mobile terminal (the primary coil and the secondary coil of the wireless transmission and reception means). Through a single path interface) and at the same time the RF authentication mode of the portable terminal can be performed.

In this case, the power radio signal and the RF recognition signal are mixed or the terminal condition information radio signal and the RFID authentication information radio signal may be mixed. As a method of distinguishing the two radio signals to be mixed, as an example Amplitude modulation can be used. For example, when the power source wireless signal has the same amplitude, the amplitude of the "1" data section among the RF recognition signals (or RFID authentication information) represented by the digital data is relatively large, and the amplitude of the "0" data section is the wireless signal for the power supply. By maintaining the same as the amplitude of the two radio signals can be separated by the envelope detection of the frequency at the receiving side of the mixed radio signal, thereby realizing each subsequent signal processing corresponding to the two radio signals.

In the above description has been described by presenting a preferred embodiment of the present invention, but the present invention is not necessarily limited to this, and those skilled in the art to which the present invention pertains within a range without departing from the technical spirit of the present invention It will be readily appreciated that the substitutions, modifications and variations are possible.

1 is a block diagram of a non-contact power supply system applying a portable terminal having a non-contact wireless power supply / RF authentication function to a power discharging pad according to a preferred embodiment of the present invention;

2 is a block diagram of an RF authentication system applying a portable terminal having a non-contact wireless power supply / RF authentication function to an RFID reader according to an embodiment of the present invention;

3 is a power supply mode in which a mobile terminal receives and processes power required from a power supply pad through induction of induced electromotive force between a primary side coil and a secondary side coil of a wireless transmission / reception means according to an exemplary embodiment of the present invention. A flow chart showing the process of

4 is a flowchart illustrating a process of performing RF authentication for a mobile terminal through an RFID reader according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

110: power supply pad 112: power generation block

114, 126: primary coil of the wireless transmission and reception means

116, 134, 144: signal processing block 118, 122, 136, 146: control block

120: RFID reader 124: RF reader block

130, 140: mobile terminal

132, 142: secondary coil of the wireless transmitting and receiving means

138, 148: power processing block

Claims (13)

A secondary coil of the wireless transmitting and receiving means for transmitting and receiving a wireless signal through induced electromotive force with the primary coil of the wireless transmitting and receiving means provided in the external terminal; When the access recognition signal of the portable terminal is received through the induced electromotive force in the secondary coil, the terminal condition information for supplying power generation is transmitted to the external terminal through the secondary coil in response to the received access recognition signal. Means to do, Power processing means for converting and outputting a power source wireless signal through the induced electromotive force in the secondary coil to a DC power source that can be used in a mobile terminal; When an RF recognition signal is received through the secondary coil, a means for extracting RFID authentication information corresponding to the received RF recognition signal and sending it to the external terminal through the secondary coil. A mobile terminal having a non-contact wireless power supply / RF authentication function comprising a. The method of claim 1, A portable terminal having a contactless wireless power supply / RF authentication function, wherein the output power of the power processing means is provided as charging power of a battery built in the portable terminal. The method of claim 1, A portable terminal having a contactless wireless power supply / RF authentication function, wherein the output power of the power processing unit is provided as an operating power source of the portable terminal. The method according to any one of claims 1 to 3, The RFID authentication information is a mobile terminal having a non-contact wireless power supply / RF authentication function, characterized in that any one of electronic payment, portable terminal confirmation, authentication information for ID verification. Power supply to the mobile terminal or RFID authentication of the mobile terminal is performed by using induced electromotive force induced between the primary coil of the wireless transmission / reception means provided on the external terminal side and the secondary coil of the wireless transmission / reception means provided on the portable terminal side. Wireless power supply and RF authentication method of the mobile terminal selectively performed. The method of claim 5, wherein The RFID authentication is a wireless power supply and RF authentication method of the portable terminal, characterized in that any one of electronic payment, portable terminal confirmation, ID verification. Using the induced electromotive force induced between the primary coil of the wireless transmitting and receiving means provided on the external terminal side and the secondary coil of the wireless transmitting and receiving means provided on the portable terminal side, power supply to the portable terminal and RFID authentication of the portable terminal are performed. Wireless power supply and RF authentication method of the mobile terminal performed at the same time. The method of claim 7, wherein The RFID authentication is a wireless power supply and RF authentication method of the portable terminal, characterized in that any one of electronic payment, portable terminal confirmation, ID verification. A first process of inducing induced electromotive force from the primary coil of the wireless transmission / reception means provided on the external terminal side to the secondary coil of the wireless transmission / reception means of the portable terminal; A second process of performing a power supply mode in which the induced induced electromotive force is converted into a DC power available for use in the portable terminal and outputted when the wireless signal by the induced induced electromotive force is a wireless signal for power of the portable terminal; A third process of performing an RF authentication mode for extracting corresponding RFID authentication information and transmitting the corresponding RFID authentication information to the external terminal through the secondary coil when the radio signal by the induced induced electromotive force is the RF recognition signal of the portable terminal Wireless power supply and RF authentication method of a mobile terminal comprising a. The method of claim 9, The second process, When the induced electromotive force corresponding to the approach recognition signal of the terminal is induced through the secondary coil, transmitting the corresponding terminal condition information to the external terminal through the secondary coil; A process of converting induced induced electromotive force for the generated power into the DC power when the induced induced electromotive force generated based on the terminal condition information is induced through the secondary coil Wireless power supply and RF authentication method of a mobile terminal comprising a. The method according to claim 9 or 10, The converted DC power is a wireless power supply and RF authentication method of the mobile terminal, characterized in that provided as a charging power of the battery built in the mobile terminal. The method according to claim 9 or 10, The converted DC power is a wireless power supply and RF authentication method of the mobile terminal, characterized in that provided as the operating power of the mobile terminal. The method according to claim 9 or 10, The RFID authentication information is a wireless power supply and RF authentication method of the mobile terminal, characterized in that any one of the electronic payment, the mobile terminal confirmation, the authentication information for ID verification.

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