KR20180089776A - Electronic shelf label and ststem of electronic shelf label - Google Patents

Abstract

The present invention relates to an electronic price indicator and an electronic price indicating system. The electronic price indicator according to an embodiment of the present invention comprises the following: an antenna connected to a transmitter transmitting data or electricity, and receiving and transmitting short-range wireless communications and wireless charging signals; a signal matching unit connected to the antenna, and confirming information received through the antenna to confirm a short-range wireless communication mode or a wireless electricity receiving mode; a signal conversion unit converting wireless electricity signals confirmed in the signal matching unit into D.C. voltage, and supplying the D.C. voltage as driving voltage; a short-range wireless communication conducting unit receiving data based on short-range wireless communication signals confirmed in the signal matching unit; and a display unit outputting images based on the received data.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic price indicator,

The present embodiment relates to an electronic price indicator, an electronic price display system, and an electronic price display method.

In general, merchandise is displayed on the shelf of a retail store. Information such as sales price, discount information, unit price, and origin of goods is displayed on a paper label. The paper label is discarded when the merchandise information is changed or the merchandise display position is changed. At this time, a new paper label must be generated to display changed product information. Thus, the paper label has a constant cost of maintenance. In addition, the use of the paper label negatively affects the environment because it wastes raw materials called paper in terms of the environment.

In recent years, research and development have been conducted on an electronic price indicator or an electronic shelf label as means for replacing the paper label. The electronic price indicator may be referred to as a goods tag. The electronic price indicator receives price related information of a corresponding commodity from a central control center (server) through a wireless device (for example, a gateway), displays the received price related information, It provides.

The electronic price indicator can display, in real time, frequent information changes or discount information for the product through the display of the electronic price indicator. The electronic price indicator displays not only price information but also store information such as a store symbol, a promotion image, a barcode, a product name, a product image, Information and the like can be displayed.

The display used for the electronic price indicator includes a Bistable Cholesteric Display (BCD) or an Electrophoretic Display (EPD).

The electronic price display system uses the electronic price indicator to guide the price information of the product in cooperation with the POS (Point Of Sale) device, and displays the price per unit, the sale price, the normal price, the display position of the merchandise, It is a system that helps to purchase merchandise and store operations by displaying various promotional information.

Generally, the electronic price display device has a problem of periodically replacing the battery for power supply. Further, it is difficult to reduce the weight and size of the electronic price display device by the battery. In addition, there is a problem that if the electronic price display device is contaminated depending on the position and the article where the electronic price display device is installed, washing and maintenance are not easy.

The embodiments of the present invention are designed to solve the above problems of the prior art, and the object of the present invention is to provide an electronic price indicator, an electronic price display system, and an electronic price display method which can be driven without mounting a separate battery in a plurality of electronic price displays .

In addition, the present embodiment provides an electronic price indicator, an electronic price display system, and an electronic price display method that can collectively manage a plurality of electronic price indicators and reduce maintenance and management costs accordingly.

In addition, the present embodiment provides an electronic price indicator, an electronic price display system, and an electronic price display method for reducing the loss of human and material resources for battery replacement by omitting the battery mounted on the electronic price indicator.

The technical problems to be solved by this embodiment are not limited to the above-mentioned technical problems and other technical problems which are not mentioned can be understood from the following description in order to clearly understand those skilled in the art. It will be possible.

The electronic price indicator according to the present embodiment includes an antenna connected to a transmitter for transmitting data or power, and transmitting and receiving short-range wireless communication and a wireless charging signal; A signal matching unit, connected to the antenna, for checking the information received through the antenna and confirming a short-range communication mode or a wireless power receiving mode; A signal converter for converting a radio power signal identified by the signal matching unit into a DC voltage and supplying the DC voltage to the DC voltage; A local communication performing unit for receiving data based on a local communication signal identified by the signal matching unit; And a display unit for outputting an image based on the received data.

A sensing unit for sensing a voltage output from the converting unit; And an amplifying unit amplifying the voltage sensed by the sensing unit.

And a switch unit for transmitting the signal to the local communication performing unit or the signal converting unit according to the operation mode confirmed by the signal matching unit.

And a storage unit for storing data output from the short distance communication performing unit and storing an identifier of the electronic price indicator.

Also, the switch unit according to the present embodiment may include a first switch unit connected to the short-range communication performing unit according to an operation mode determined by the signal matching unit; And a second switch unit connected to the signal converting unit.

Also, the electronic price display system according to the present embodiment is connected to a server, acquires data of the electronic price indicator through the server, transmits the acquired data to the corresponding electronic price indicator, A transmitter for transmitting the data; And an electronic price indicator for receiving data or power from the transmitter, performing image display based on the received data, and driving with the received power, wherein the electronic price indicator is for receiving data and receiving power The antenna is integrally formed.

The transmitter may further include: a first communication unit connected to the server and acquiring data of the electronic price indicator through the server; A second communication unit connected to the electronic price indicator and transmitting data acquired through the first communication unit to the electronic price indicator and transmitting power to the electronic price indicator according to the operation mode; A controller for checking an electronic price indicator connected to the second communication unit and transmitting data or power based on the information of the electronic price indicator; And a storage unit for storing the electronic price indicator identifier and storing the electronic price indicator data acquired from the server.

The second communication unit includes a short-range communication antenna, and the short-range communication antenna includes a plurality of coils having different sizes.

The second communication unit may include a conversion unit for converting power applied through the power supply unit; A sensing unit for checking a voltage value of the converted power; And an amplifying unit amplifying the voltage value detected by the sensing unit.

The second communication unit includes a short-range communication performing unit that performs short-range communication according to an operation mode of the transmitter.

A method of operating an electronic price indicator according to an embodiment of the present invention includes: accessing a transmitter within a threshold range; Performing communication with the transmitter; And receiving power or data from the transmitter, wherein the power or data is carried through one antenna.

Effects of the electronic price indicator, the electronic price display system, and the electronic price display method according to the present embodiment will be described as follows.

First, according to the electronic price indicator, the electronic price display system, and the electronic price display method according to the present embodiment, it is possible to supply power without mounting the battery, so that the cost loss due to battery replacement and battery usage can be minimized.

Second, according to the electronic price indicator, the electronic price display system, and the electronic price display method according to the present embodiment, the functions of the communication unit for data communication and power transmission and reception are unified, thereby simplifying the configuration and reducing the production cost.

Third, according to the electronic price indicator, the electronic price display system, and the electronic price display method according to the present embodiment, the management and maintenance of the electronic price indicator are performed by executing the batch management and updating of the plurality of electronic price indicators using wireless communication It can have an easy effect.

The effects obtainable in this embodiment are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is to be understood, however, that the technical features of the present invention are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
1 is a view for schematically explaining a system including an electronic price indicator according to the present embodiment.
2 is a block diagram for explaining a configuration of a transmitter applied to the present embodiment.
3 is a block diagram for explaining a configuration of a communication unit in the configuration of a transmitter to which the present embodiment is applied.
Fig. 4 is a view for schematically explaining a block configuration of an electronic price indicator to which the present embodiment is applied.
5 is a flow chart for explaining a data collecting operation of the transmitter according to the present embodiment.
6 is a flowchart illustrating an operation of transmitting data or power in a transmitter according to an embodiment of the present invention.
7 is an operational flowchart for explaining an operation of receiving data or power in an electronic price indicator according to the present embodiment.
FIG. 8 is an operational flowchart for explaining a power receiving operation in the electronic price indicator according to the present embodiment.
9 is an exemplary diagram for explaining a state in which an electronic price indicator is mounted on a transmitter according to the present embodiment.

The following embodiments are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. Like reference numerals designate like elements throughout the specification.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms. In addition, the present embodiments are provided so that the disclosure of the present invention is complete and that those skilled in the art will fully understand the scope of the present invention. Further, the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

The terms "under, below, beneath," "lower," "above," and "upper", which are spatially relative terms, Or may be used to easily describe the relationship of components to other components or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term "below" can include both downward and upward directions.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprise "and / or" comprising ", as used in the specification, means that the presence of stated elements, Or additions.

1 is a view for schematically explaining a system including an electronic price indicator according to the present embodiment.

Referring to FIG. 1, the electronic price indicator 200 may be referred to as an electronic shelf label (ESL), an electronic starter label terminal or a product tag, an ESL terminal, a terminal or a control device. The electronic price indicator (200) is mounted on a shelf of a store such as a large-sized shopping mall, a general store, and displays information of a product such as a price. The plurality of electronic price indicators 200 may be connected to the transmitter 100 for data update or power supply (charging). The electronic price indicator 200 may receive update data of the electronic price indicator 200 stored in the transmitter 100 for a predetermined period of time in the transmitter 100. Also, the electronic price indicator 200 can be stationed (tagged) in the transmitter 100 for a predetermined period of time, and the transmitter 100 can apply or charge the driving power of the electronic price indicator 200.

The transmitter 100 communicates with the server 40 through a gateway located near the transmitter 100 of the gateway 30. [ The transmitter 100 receives and stores the data to be updated in the price indicator 200 from the gateway 30 connected to the server 40. At this time, the transmitter 100 may form a wireless communication antenna and a short-range communication antenna, respectively. The transmitter 100 may communicate with the gateway 30 via a wireless communication antenna. The transmitter 100 may transmit the data to the price indicator 200 acquired through the gateway 30 through a short-range communication antenna. At this time, the short-range communication antenna is configured by NFC (Near Field Communication). The transmitter 100 can transmit the update data when the price indicator 200 approaches via the short-range communication antenna. Also, the transmitter 100 can supply (transmit) driving power through the short-range communication antenna according to the state of the price indicator 200. [

The server 40 is connected to a console (not shown). A console is a device that includes a user interface for managing an electronic price indicator system. The server 40 may receive a user's command through the console. The gateway and the transmitter can also receive the user's command through the console. That is, the user can control the electronic price indicator 200, the gateway 30, and the server 40 through the console.

The server 40 can transmit to the transmitter 100 the information of the goods to be displayed on the electronic price indicator 200, such as the price, the product image, the discount information, and the barcode.

The server 40 and the gateway 30 may be connected by wire or wirelessly. For example, the server 40 and the gateway 30 can communicate via Ethernet or Wi-Fi (wireless fidelity).

The gateway 30 and the transmitter 100 may be connected wirelessly. For example, the transmitter 100 may be connected through ZigBee, Wi-Fi, or UWB (Ultra Wide Band) communication.

The electronic price indicator 200 has a unique identifier (ID). The server 40 may separately provide data using the identifier of the electronic price indicator 200 to provide data to the electronic price indicator 200. [

The identifier may be set by the administrator when the electronic price indicator is first installed on the store shelf. The manager can assign an identifier to the electronic price indicator 200 using a hand held device. The identifier may be registered with the server 40 by the administrator.

When the identifier of the electronic price indicator 200 is registered in the server 40, the manager can change the image displayed on the electronic price indicator 200 through the server 40. [ The administrator can also send an instruction to the electronic price indicator 200 or the transmitter 100 to control the electronic price indicator 200 via the server 40. [

Hereinafter, each configuration and an operation thereof will be described in detail based on the configuration of the electronic price indicator 200 and the system including the same.

2 is a block diagram for explaining a configuration of a transmitter applied to the present embodiment.

Referring to FIG. 2, the transmitter 100 includes a communication unit 110, a power supply unit 120, a controller 130, an output unit 140, an interface unit 150, and a storage unit 160 can do.

The communication unit 110 may include at least one communication module. For example, the communication unit 110 may be divided into a first communication unit 111 and a second communication unit 112. The first communication unit 111 and the second communication unit 112 may be integrally formed.

The first communication unit 111 includes a wireless communication antenna for communication between the transmitter 100 and the server 40 and a driving unit for driving the antenna. The first communication unit 111 performs wireless communication with the server 40 in the 2.4 GHz band, for example. At this time, data of the electronic price indicator 200 based on each identifier information can be collected from the server 40 through the first communication unit 111. [

The second communication unit 112 includes a short-range communication antenna for performing communication between the transmitter 100 and the price indicator 200, and a driving unit for driving the short-range communication antenna. The second communication unit 112 performs communication with the electronic price indicator 200, for example, in the band of 13.56 MHz. At this time, data or power is transmitted to the electronic price indicator 200 through the second communication unit 112. The short-range communication antenna constituting the second communication unit 112 may be an NFC antenna, for example.

 Specifically, the second communication unit 112 may include a configuration as shown in FIG. 3 is a block diagram for explaining a configuration of a communication unit in the configuration of a transmitter to which the present embodiment is applied.

Referring to FIG. 3, the second communication unit 112 includes an antenna coil 310 and a processing unit 320.

The antenna coil 310 may be mounted with a plurality of coils of different sizes. Each transmit coil may be arranged such that some of the regions overlap or are spaced from one another. The transmission coil may be formed to have different sizes corresponding to electronic price indicators of various sizes.

The processing unit 320 may process signals for data transmission / reception and power transmission through the antenna coil 310. Specifically, the processing unit 320 may include a switch unit 321, an NFC performing unit 322, a power converting unit 323, and a sensing unit 324.

The switch unit 321 is constituted by a first switch 321_1 and a second switch 321_2 and each switch is connected to the respective states when the second communication unit 112 performs the NFC function or performs power transmission Can be connected to a component that is activated accordingly.

The NFC performing unit 322 is activated upon execution of a data transmission mode for transmitting data to the electronic price indicator 200 through the antenna coil 310 based on the control of the controller 130. [ That is, the NFC performing unit 322 causes the electronic price indicator data acquired from the server 40 when the transmitter 100 operates in the data transmission mode to be transmitted to the electronic price indicator 200 through the NFC performing unit 322 . At this time, the switch unit 321 operates so that the first switch 321_1 is connected to the NFC performing unit 322. And the second switch 321_2 operates in a short-circuited state. Therefore, the control signal of the controller 130 controls the NFC performing unit 322 through the first switch 321_1.

The power conversion unit 323 may include a DC / DC conversion unit 323_1 and an amplification unit 323_2.

The DC / DC converter 323_1 performs a function of converting DC power supplied from the power supply unit 120 into DC power of a specific intensity according to a control signal of the controller 130. [

At this time, the sensing unit 324 may measure the voltage, current, and the like of the DC-converted power and provide the voltage and current to the control unit 130. Also, the sensing unit 324 may measure the internal temperature of the transmitter for determining whether overheating has occurred, and may provide the measurement result to the controller 130. For example, the controller 130 adaptively cuts off the power supply from the power supply unit 120 or blocks power supply to the amplification unit 323_2 based on the voltage / current value measured by the sensing unit 324 . To this end, a power cutoff circuit may be further provided at one side of the power conversion unit 323 to cut off power supplied from the power supply unit 120 or to cut off power supplied to the amplification unit 323_2.

Also, the controller 130 may control the power supplied from the transmitter 100 to the pass-through price indicator 200 adaptively based on the voltage / current value measured by the sensing unit 324.

The amplification unit 323_2 can adjust the intensity of the DC / DC-converted power according to the control signal of the control unit 130. [ The amplification unit 323_2 can generate the transmission power by adjusting the gain of the amplifier 323_2 based on the power value required by the electronic price indicator 200

As described above, the second communication unit 112 is a short-range communication module and can be operated according to the operation states of the coil 310 and the transmitter 100. [

The controller 200 of the transmitter 200 controls the second communication unit 112 according to the state of the stationary electronic price indicator 200. That is, the controller 130 controls the second communication unit 112 to transmit the power of the threshold value when operating in a power transmission mode for supplying power to the stationary electronic price indicator 200. The control unit 130 controls the second communication unit 112 to operate the data transmission mode for transmitting data to the stationary electronic price indicator 200 and transmits the data acquired from the server 40 to the corresponding electronic price indicator 200 .

The controller 130 can check the status information of the transmitter 200. [ The control unit 130 can acquire the identifier information and the status information of the electronic price indicator 200 from the electronic price indicator 200 that is stored through the second communication unit 112. [ Accordingly, the controller 130 may operate to transmit power or transmit data to the price indicator 200 based on the acquired information.

The output unit 140 outputs the operation state of the transmitter 100 as various contents. The output unit 140 may include a display unit 141 and an audio output unit 142.

The output unit 140 can display the operation state of the transmitter 100 through the display unit 141. [ That is, the display unit 141 may display various status information including the sleep state, the operating state, the connection state with the electronic price indicator, and the like of the transmitter 100. The audio output unit 142 may output audio data displayed on the display unit 141 as audio data.

The interface unit 150 may include an external interface unit 151 for connecting an external device connected to the transmitter 100 and a user interface unit 152 for user input. The external interface unit 151 may be configured as a port for connecting the transmitter 100 with an external device by wire. The user interface unit 152 includes various configurations for user input. The user interface 152 may perform a control signal input by a user request or a user response signal input.

The storage unit 160 stores a program or data for operation of the transmitter 100. [ The storage unit 160 stores information of the gateway 30 and the server 40. The storage unit 160 stores the identifier information of the electronic price indicator 200. The storage unit 160 stores data to be transmitted to the electronic price indicator 200 acquired from the server 40. [ The storage unit 160 stores the amount of power supplied by each electronic price indicator 200.

The electronic price indicator 200 placed in the transmitter 100 having the above configuration can receive data or power from the transmitter 100. 4, the configuration of the electronic price indicator 200 that is placed in the transmitter 100 will be described.

Fig. 4 is a view for schematically explaining a block configuration of an electronic price indicator to which the present embodiment is applied.

4, an electronic price indicator 200 according to the present embodiment includes an antenna coil 201, a signal matching unit 202, a switch unit 203, an NFC performing unit 204, a signal converting unit 205, A sensing unit 206, a rectifier 207, a power output unit 208, a storage unit 209, an output unit 210, and a control unit 211.

The antenna coil 201 is composed of an NFC antenna coil for performing short-range communication with the transmitter 100. The antenna coil 201 receives data from the transmitter 100 or receives power based on the control of the controller 211. [

The signal matching unit 202 is connected to the antenna coil 201 to convert a signal transmitted from the antenna coil 201, that is, an antenna impedance, into an impedance suitable for short-range wireless communication and wireless charging. At this time, the signal frequency transmitted through the antenna coil 201 may be the same 13.5 MHz used in short-range wireless communication and wireless charging.

In FIG. 4, the case where the signal matching unit 202 is the same as the short-range wireless communication and the wireless charging frequency has been described by way of example with a single configuration. However, when the short-range wireless communication and the wireless charging frequency are different, the signal matching unit may configure the short-distance wireless communication matching unit and the wireless charging matching unit.

The switch unit 203 may be configured to activate the NFC performing unit 204 according to the operation state of the electronic price indicator 200. The switch unit 203 may be configured to activate the wireless charge units for wireless charging, The second switch unit 203_2 may be configured. The first switch unit 203_1 and the second switch unit 203_2 are controlled in accordance with the result determined by the control unit 211 and the configuration unit for controlling the first switch unit 203_1 and the second switch unit 203_2 And may be configured in the controller 211.

The signal converting unit 205 converts an RF signal (Radio Frequency), which is a radio signal, into a DC voltage. The signal converter 205 converts a radio signal received through the antenna coil 201 into a DC voltage when the electronic price indicator 200 operates in a power receiving mode in which power is received through the antenna coil 201.

The sensing unit 206 senses the voltage value converted by the signal conversion unit 205 and determines whether the voltage value is erroneous or a voltage value conforming to the electronic qualification indicator 200. [ The sensing unit 206 may transmit the sensed result to the controller 211. [ In addition, the sensing unit 205 transmits the voltage value converted by the signal conversion unit 205 to the control unit 211, and the control unit 211 detects whether the voltage value is amplified.

Also, the sensing unit 206 may measure the temperature inside the electronic price indicator 200 and provide the measurement result to the control unit 211. Also, the power applied from the transmitter 100 can be cut off based on the voltage / current value measured by the sensing unit 206.

The rectifier 207 amplifies the DC value detected by the sensing unit 206 based on the control of the controller 211. At this time, the amount of amplification of the direct current value may be a drive voltage value defined in the electronic price indicator 200. The rectifier 207 may be a bridge diode.

The power output unit 208 outputs the power converted by the signal conversion unit 205 or outputs the power boosted by the rectifier 207. That is, the power output unit 208 performs power supply for driving the electronic price indicator 200.

The storage unit 209 stores the identifier information of the electronic price indicator 200. The storage unit 209 stores data to be displayed in the electronic price indicator 200. [ The storage unit 209 stores the data received from the transmitter 100.

The output unit 210 is a means for displaying data in the electronic price indicator 200, and may have the form of a display unit. The output unit 210 may display the data stored in the storage unit 209 or may display a status display or a charged amount / a power amount when the power is received from the transmitter 100. [

The control unit 211 controls the switch unit 203 to control the operation of the NFC performing unit 204 so that the NFC performing unit 204 is operated by the radio signal transmitted from the signal matching unit 202. The control unit 211 determines the radio signal transmitted from the signal matching unit 202 and controls the switch unit 203 to operate in the power receiving mode and performs operation control for power reception according to the control signal. That is, the control unit 211 can control to perform either the data reception mode or the power reception mode. It is also possible to control the data receiving mode and the power receiving mode simultaneously.

The operation of the transmitter 100 and the electronic indicator 200 according to the present embodiment will now be described in detail with reference to FIGS. 5 to 8. FIG.

First, the data transmission or power transmission operation of the transmitter 100 will be described in detail with reference to FIGS. 5 and 6. FIG.

5 is a flow chart for explaining a data collecting operation of the transmitter according to the present embodiment.

5, the transmitter 100 receives data from the server 40 connected through the gateway 30. (S501)

The transmitter 100 determines whether the reception of the data has been completed (S502), and determines whether the data reception is completed and there is a stored electronic price indicator (S503)

The transmitter 100 stores the received data in the storage unit if there is no stored electronic price indicator.

On the other hand, the transmitter 100 may transmit the received data to the electronic price indicator if there is a stationary electronic price indicator. At this time, the transmitter 100 determines whether the received data corresponds to the stored electronic price indicator. The transmitter 100 may store the data in the storage unit without transmitting or transmitting the data to the stationary electronic price indicator according to the matching.

6 is a flowchart illustrating an operation of transmitting data or power in a transmitter according to an embodiment of the present invention.

Referring to FIG. 6, the transmitter 100 operates in a stand-by mode in which the electronic price indicator 200 is suspended or the server 40 waits for data reception when the electronic price indicator 200 is absent (S601)

 The transmitter 200 determines whether the electronic price indicator 200 is placed in the stand-by mode operation in step S602. If it is determined that the electronic price indicator 200 is stationary, the transmitter 200 transmits the electronic price indicator 200 to the stationary electronic price indicator 200 (S603). Specifically, the transmitter 200 confirms the identifier of the stationary electronic price indicator 200, and confirms whether there is data to be transmitted corresponding to the identifier.

The transmitter 200 executes a data transmission mode for transmitting the data to the stationary electronic price indicator 200 when there is data to be transmitted corresponding to the identified identifier. (S604)

On the other hand, the transmitter 200 activates the power transmission mode when there is no transmission target data corresponding to the identified identifier (S605)

The transmitter 200 executes power transmission to the stationary electronic price indicator 200 when the power transmission mode is activated. At this time, the transmitter 200 can confirm the amount of power to be transmitted to the electronic price indicator 200 and transmit the corresponding amount of power. Also, the transmitter 200 may check the voltage value converted through the power supply unit, and may perform the power amplification step so as to transmit the power to the voltage value or amplify the voltage value to a predetermined value.

The transmitter 200 determines whether the power transmission is completed (S607). When the power transmission is completed, the transmitter 200 ends the power transmission mode. (S608) At this time, the power transmission mode is completed from the electronic qualification indicator 200 Lt; RTI ID = 0.0 > a < / RTI > Or when the stationary electronic price indicator 200 is removed, if there is no electronic price indicator 200 detected by the transmitter 200, the power transmission mode may be terminated. The transmitter 200 may output information indicating the operation mode through the output unit when the power transmission mode is executed or the data transmission mode is executed.

In the present embodiment, a case of selectively operating one of the data transmission mode and the power transmission mode has been described as an example. However, the present invention is not limited to this, and the data transmission mode can be simultaneously performed in the power transmission mode operation. Or a power transmission mode in which power is transmitted to the electronic price indicator that is also held in the data transmission mode.

Hereinafter, the operation of the electronic price indicator 200 according to the operation of the transmitter 100 illustrated in FIGS. 5 and 6 will be described in detail.

7 is an operational flowchart for explaining an operation of receiving data or power in an electronic price indicator according to the present embodiment.

In this embodiment, a case where the electronic price indicator operates in the standby mode in a state in which any one of the wireless charging mode and the data receiving mode is selectively activated will be described. However, the present invention is not limited to this, and it is possible that the operation mode is all activated or the standby mode is operated in the inactive state.

7, the electronic price indicator 200 may perform a standby mode with the wireless charging mode activated and the data reception mode disabled. (S701)

The electronic price indicator 200 can confirm that there is data to be received from the transmitter 100. (S702)

The electronic price indicator 200 determines whether there is data to be received from the transmitter 100 as a result of the check (S702). If there is data, the electronic price indicator 200 deactivates the activated wireless charging mode and activates the data reception mode in the deactivated state. (S704)

The electronic qualification indicator 200 activates a data reception mode to receive data from the transmitter 100. (S705)

The electronic price indicator 200 determines whether or not the data reception is completed, and when the data reception is completed, the electronic price indicator 200 transits to the initial state. That is, when the data reception is completed, the data reception mode is deactivated and the wireless charging mode is changed to the active state.

On the other hand, the electronic price indicator 200 executes the activated wireless charging mode when there is no data to be received from the transmitter 100. (S707)

The electronic price indicator 200 receives power from the transmitter 100 in the wireless charging mode activation mode (S708)

The electronic price indicator 200 determines whether the power reception is completed during the power reception (completion of charging) and the power reception is completed and operates in the initial mode.

 8, the operation of the electronic price indicator when the charging mode is executed will be described in detail.

FIG. 8 is an operational flowchart for explaining a power receiving operation in the electronic price indicator according to the present embodiment.

8, when the electronic price indicator 200 operates in the wireless charge execution mode (S801), the electronic price indicator 200 confirms the received power amount. (S802) Specifically, the electronic price indicator 200 receives, The amount of power transmitted from the transmitter 100 is checked.

The electronic price indicator 200 determines whether the amount of power received is less than the reference amount of power (S803). Specifically, the electronic price indicator 200 determines whether the received power amount is the driving power amount of the electronic price indicator 200 It is determined whether or not a power amount corresponding to the charged amount is being received.

The electronic price indicator 200 can execute or continue the charging mode according to the received power when the confirmed received power amount exceeds the reference power amount. (S804)

On the other hand, the electronic price indicator 200 may perform an amplification step of amplifying the received power when the confirmed received power amount is equal to or less than the reference power amount. (S805) Specifically, It is amplified by the amount of electric power required for charging or the amount of electric power required for driving the electronic price indicator 200 and applied to the electronic price indicator 200.

9 is an exemplary diagram for explaining a state in which an electronic price indicator is mounted on a transmitter according to the present embodiment.

9, the electronic price indicator 910 and the transmitter 920 are mutually detected through a short-range communication antenna, and the transmitter 920 transmits power to the electronic price indicator 910 according to the detection result Or to transmit data.

At this time, the display unit of the electronic price indicator 190 displays the product information 911 including the bar code 912 of the product and information such as the product name and the product price. And display means 913 for displaying a connection state with the transmitter 920, a charging state, and a data transmission / reception state.

It will be apparent to those skilled in the art that the embodiments may be embodied in other specific forms without departing from the spirit and essential characteristics of the embodiments.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present embodiment should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the present embodiment are included in the scope of the present embodiment.

Claims (10)

An antenna connected to a transmitter for transmitting data or power and transmitting and receiving short-range wireless communication and a wireless charging signal;
A signal matching unit, connected to the antenna, for checking the information received through the antenna and confirming a short-range communication mode or a wireless power receiving mode;
A signal converter for converting a radio power signal identified by the signal matching unit into a DC voltage and supplying the DC voltage to the DC voltage;
A local communication performing unit for receiving data based on a local communication signal identified by the signal matching unit;
And a display unit for outputting an image based on the received data. The method according to claim 1,
A sensing unit sensing a voltage output from the conversion unit;
And an amplifying unit amplifying the voltage sensed by the sensing unit. The method according to claim 1,
And a switch unit for transmitting the corresponding signal to the local communication performing unit or the signal converting unit according to the operation mode confirmed by the signal matching unit. The method according to claim 1,
And a storage unit for storing data output from the local communication performing unit and storing an identifier of the electronic price indicator. The method according to claim 1,
The switch unit
A first switch connected to the short-range communication performing unit according to an operation mode determined by the signal matching unit;
And a second switch unit connected to the signal converting unit. A transmitter, connected to the server, for acquiring data of the electronic price indicator through the server, transmitting the acquired data to the electronic price indicator, and transmitting power to the electronic price indicator according to the operation mode;
And an electronic price indicator for receiving data or power from the transmitter, performing image display based on the received data, and driving with the received power,
The electronic price indicator
And an antenna for data reception and power reception are integrally formed. The method according to claim 6,
The transmitter
A first communication unit connected to the server and acquiring data of the electronic price indicator through the server;
A second communication unit connected to the electronic price indicator and transmitting data acquired through the first communication unit to the electronic price indicator and transmitting power to the electronic price indicator according to the operation mode;
A controller for checking an electronic price indicator connected to the second communication unit and transmitting data or power based on the information of the electronic price indicator;
And a storage unit for storing the electronic price indicator identifier and storing the electronic price indicator data acquired from the server. 8. The method of claim 7,
The second communication unit
A short-range communication antenna,
Wherein the short-range communication antenna includes a plurality of coils of different sizes. 8. The method of claim 7,
The second communication unit
A converting unit for converting power applied through the power supply unit;
A sensing unit for checking a voltage value of the converted power;
And an amplifying unit amplifying the voltage value detected by the sensing unit. 8. The method of claim 7,
The second communication unit
And a short range communication performing unit for performing short range communication according to an operation mode of the transmitter.

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