KR20120126413A - Contents sharing in wireless power transmission environment - Google Patents

Abstract

PURPOSE: A content sharing method in a wireless power transmission environment is provided to enable a user to continually use a content service provided through an electronic device when the electronic device is wirelessly charged. CONSTITUTION: A power transmission unit(110) forms an area capable of wireless power transmission by using a wireless power signal. The power transmission unit detects an electronic device from the formed area. A sensor unit(120) senses a position of the electronic device. A communication unit(130) receives contents from the electronic device. A control unit(180) transmits the contents stored in a memory(150) to an electronic device not detected in the area by the control of the communication unit. [Reference numerals] (110) Power transmission unit; (120) Sensor unit; (130) Communication unit; (140) Output unit; (141) Display part; (142) Sound output part; (150) Memory; (180) Control unit; (190) Power supply unit

Description

Content sharing in wireless power transfer environments {CONTENTS SHARING IN WIRELESS POWER TRANSMISSION ENVIRONMENT}

The present specification relates to a wireless power transmitter and an electronic device, and more particularly, to a wireless power transmitter and an electronic device capable of transmitting and receiving content in a wireless power transmission environment.

As the portability of various electronic devices of the user is emphasized, battery efficiency is becoming more important. Therefore, various techniques for increasing the efficiency of the battery have been proposed. While attempts have been made to make the battery more efficient, there has been no significant progress in charging the battery.

In particular, in order to charge each electronic device, a power adapter must be provided separately, which is very troublesome for the user. Recently, various studies for wirelessly charging electronic devices have been conducted. The wireless charging is a breakthrough energy transfer concept that can remove energy for charging and transfer energy electromagnetically.

In the present specification, when the electronic device that outputs the content is located in an area where wireless power can be transmitted, the wireless power transmitter providing the continuous and seamless content service by causing the content being outputted to be output from another external device. And to provide an electronic device.

In addition, the present specification is to ensure that the information corresponding to the event occurring in the electronic device located in the area that can transmit power wirelessly output from another external device to ensure that information about the event occurring during wireless charging can be stably and conveniently It is an object of the present invention to provide a wireless power transmitter and an electronic device.

In addition, the present specification is to wirelessly maximize the utilization of the content stored in the electronic device during wireless charging by having the content stored in the electronic device located in the area capable of transmitting power wirelessly outputted from another external device in response to a request for transmission from another external device. The object is to provide a power transmitter and an electronic device.

In accordance with an aspect of the present disclosure, a wireless power transmitter according to an embodiment of the present disclosure forms an area in which power can be wirelessly transmitted using a wireless power signal, and is configured in an area in which power can be wirelessly transmitted. A power transmission unit detecting one electronic device; A communication unit receiving content from the first electronic device; A memory storing content received from the first electronic device; And a control unit for controlling the communication unit to transmit the content stored in the memory to a second electronic device that is not detected in the area capable of transmitting power wirelessly.

According to an embodiment of the present disclosure, the controller deletes the content from the memory when the first electronic device is no longer detected in an area capable of transferring power wirelessly.

In an embodiment, the content includes content data and playback information of the content data.

According to an embodiment of the present disclosure, the control unit reproduces the content data based on the reproduction information, and controls the communication unit to transmit an output signal generated according to the reproduction to the second electronic device.

According to an embodiment of the present disclosure, the control unit controls the communication unit to transmit the content data to a third electronic device that is not detected in an area in which the reproduction information may be transmitted to the second electronic device and the power may be transmitted wirelessly. do.

According to an embodiment of the present disclosure, the content may be content that is reproduced in the first electronic device at a point in time when the first electronic device is detected in an area in which power can be transmitted to the wireless device.

In an embodiment, the content may be content corresponding to an event occurring in the first electronic device while the first electronic device is detected in an area in which power can be transmitted to the wireless device.

In an embodiment, the communication unit transmits a request for transmitting the content to the first electronic device, and receives the content from the first electronic device according to the request for transmission.

In addition, in one embodiment, the wireless power signal is a signal for detecting the first electronic device, the power transmission unit receives a response to the wireless power signal from the first electronic device, based on the response The first electronic device is detected in an area capable of transferring power wirelessly.

In an embodiment, the power transmission unit receives at least one of identification information and setting information of the first electronic device, and the control unit is further configured by the communication unit based on at least one of the identification information and setting information. Control to establish a connection with the electronics.

In an embodiment, the power transmission unit wirelessly transmits power to the first electronic device, and the control unit transmits the content stored in the memory while the communication unit wirelessly transmits power to the first electronic device. Control to transmit to the second electronic device.

In another embodiment, the wireless power transmitter includes a display unit which displays a menu for transmitting the content; And an input unit configured to receive an input for selecting the menu, wherein the control unit receives the content from the first electronic device when receiving the input for selecting the menu, and stores the content stored in the memory. Control to transmit to the second electronic device.

The wireless power transmitter may further include a display unit configured to display a list of a plurality of electronic devices capable of receiving the content; And an input unit configured to receive an input for selecting the second electronic device from the list.

In an embodiment, the controller controls the communication unit to transmit the content stored in the memory to the second electronic apparatus by using a streaming method.

On the other hand, the electronic device according to an embodiment disclosed in the present disclosure for realizing the above-described problem is an electronic device for receiving power wirelessly from a wireless power transmitter, a power receiving unit for receiving a wireless power signal from the wireless power transmitter ; A controller configured to determine whether the electronic device is located in an area in which the electronic device can wirelessly receive power from the wireless power transmitter based on the wireless power signal; And a communication unit configured to transmit the content to the wireless power transmitter when the electronic device is located in an area capable of wirelessly receiving power from the wireless power transmitter.

In one embodiment, the communication unit stops the transmission of the content when the electronic device is no longer located in an area where the electronic device can wirelessly receive power from the wireless power transmitter.

According to an embodiment of the present disclosure, the content transmitted to the wireless power transmitter is reproduced by the electronic device when it is determined that the electronic device is located in an area where the electronic device can wirelessly receive power from the wireless power transmitter. Characterized in that the content is.

In an embodiment, the content transmitted to the wireless power transmitter is content corresponding to an event generated in the electronic device while the electronic device is located in an area where the electronic device can wirelessly receive power from the wireless power transmitter. It is characterized by that.

In addition, in one embodiment, the communication unit receives the request to transmit the content from the wireless power transmitter, and transmits the content to the wireless power transmitter in response to the transmission request.

According to an embodiment of the present disclosure, the electronic device may include a display unit which displays a menu for transmitting the content; And an input unit configured to receive an input for selecting the menu, wherein the controller controls the communication unit to transmit the content to the wireless power transmitter when an input for selecting the menu is received.

According to the wireless power transmitter and the electronic device disclosed herein, when charging the electronic device, the user can seamlessly receive the content service provided through the electronic device through the external device.

In addition, when wirelessly charging the electronic device, the user can be freely provided with a call or a message service without being bound by space. Even if the wireless power transmitter is disposed away from the user's active space, there is an advantage that the user can be free from concerns about electromagnetic field exposure because the external device can handle various events occurring in the electronic device.

In addition, when charging an electronic device wirelessly, when the user goes out without carrying the electronic device without recognizing the existence, the user may utilize contents stored in the electronic device by using a predetermined external device such as a car or an office PC. By doing so, the convenience of living can be provided.

1 is an exemplary diagram conceptually showing a wireless power transmission device and an electronic device according to embodiments of the present invention.
2 (a) and 2 (b) are block diagrams illustrating the configurations of the wireless power transmitter 100 and the electronic device 200 employable in the embodiments disclosed herein, respectively.
FIG. 3 illustrates a concept that power is transmitted from a wireless power transmission apparatus to an electronic apparatus wirelessly according to an inductive coupling scheme.
4 is a block diagram exemplarily illustrating a part of a configuration of an electromagnetic induction wireless power transmitter 100 and an electronic device 200 that may be employed in the embodiments disclosed herein.
FIG. 5 is a block diagram of a wireless power transmitter configured to have one or more transmitting coils receiving power according to an inductive coupling scheme that may be employed in the embodiments disclosed herein.
6 shows a concept that power is transferred from a wireless power transmission device to an electronic device wirelessly according to a resonant coupling scheme.
FIG. 7 is a block diagram exemplarily illustrating a part of a configuration of a wireless power transmitter 100 and an electronic device 200 of a resonance type that may be employed in the embodiments disclosed herein.
FIG. 8 is a block diagram of a wireless power transmitter configured to have one or more transmitting coils receiving power in accordance with a resonant coupling scheme employable in embodiments disclosed herein.
FIG. 9 is a block diagram showing a wireless power transmission apparatus further including an additional configuration in addition to the configuration shown in FIG. 2 (a).
10 shows a configuration in which the electronic device 200 according to the embodiments disclosed herein is implemented in the form of a mobile terminal.
11 illustrates the concept of transmitting and receiving packets between a wireless power transmission device and an electronic device through modulation and demodulation of a wireless power signal in the wireless power transmission disclosed herein.
12 illustrates a method of displaying data bits and bytes in which the wireless power transmitter 100 configures a power control message.
FIG. 13 illustrates a packet including a power control message used in a wireless power transfer method in accordance with the embodiments disclosed herein.
FIG. 14 illustrates operating states of a wireless power transmission device 100 and an electronic device 200 in accordance with the embodiments disclosed herein.
15 is a block diagram illustrating a wireless power delivery system according to one embodiment disclosed herein.
16 is a flowchart illustrating a content sharing process of a wireless power delivery system according to embodiments disclosed herein.
17 is a view illustrating an operation control process of the wireless power transmitter 100 according to the embodiments disclosed herein.
18 is a view illustrating an operation control process of the electronic device 200 according to the embodiments disclosed herein.
19 is a conceptual diagram illustrating a user interface provided by the wireless power transmitter 100 or the electronic device 200 according to the embodiments disclosed herein.
20A to 20C are conceptual diagrams of a wireless power delivery system according to embodiments disclosed herein.

It is to be noted that the technical terms used herein are merely used to describe particular embodiments, and are not intended to limit the present invention. It is also to be understood that the technical terms used herein are to be interpreted in a sense generally understood by a person skilled in the art to which the present invention belongs, Should not be construed to mean, or be interpreted in an excessively reduced sense.

In addition, when the technical terms used herein are incorrect technical terms that do not accurately express the spirit of the present invention, they should be replaced with technical terms that can be understood correctly by those skilled in the art. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

Also, the singular forms "as used herein include plural referents unless the context clearly dictates otherwise. In the present application, the term "comprising" or "comprising" or the like should not be construed as necessarily including the various elements or steps described in the specification, Or may be further comprised of additional components or steps.

Further, the suffix "module" and "part" for the components used in the present specification are given or mixed in consideration of ease of description, and do not have their own meaning or role.

Furthermore, terms including ordinals such as first, second, etc. used in this specification can be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It is to be noted that the accompanying drawings are only for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the scope of the present invention with reference to the accompanying drawings.

1 is an exemplary view conceptually illustrating a wireless power transmitter and an electronic device according to embodiments of the present disclosure.

As can be seen with reference to FIG. 1, the wireless power transmitter 100 may be a power transmission device that wirelessly transfers power required by the electronic device 200. In addition, the wireless power transmission apparatus 100 may be a wireless charging apparatus that charges the battery of the electronic device 200 by transmitting power wirelessly. When the wireless power transmitter 100 is a wireless charging device, it will be described later with reference to FIG. 9. In addition, the wireless power transmitter 100 may be implemented as various types of devices that deliver power to the electronic device 200 requiring power in a non-contact state.

The electronic device 200 is a device capable of operating by wirelessly receiving power from the wireless power transmitter 100. Also, the electronic device 200 can charge the battery using the received wireless power.

On the other hand, the electronic apparatus for receiving power wirelessly described in the present specification can be applied to any portable electronic apparatus such as an input / output apparatus such as a keyboard, a mouse, an auxiliary output apparatus for video or audio, a cellular phone, a cellular phone, smart phone, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), tablet, or multimedia device. As described below, the electronic device 200 may be a mobile communication terminal (eg, a mobile phone, a cellular phone, a tablet) or a multimedia device. When the electronic device is a mobile terminal, it will be described later with reference to FIG. 10.

Meanwhile, the wireless power transmitter 100 may wirelessly transfer power to the electronic device 200 without contact between each other using one or more wireless power transfer methods. That is, the wireless power transmitter 100 has an inductive coupling based on an electromagnetic induction phenomenon caused by the wireless power signal and an electromagnetic resonance coupling based on an electromagnetic resonance caused by a wireless power signal having a specific frequency. Power may be delivered using one or more of the following methods.

The wireless power transmission using the inductive coupling method is a technology for wirelessly transmitting power using a primary coil and a secondary coil, and the current is induced to the other coil side through a magnetic field that is changed in one coil by an electromagnetic induction phenomenon. It is the transmission of power.

In the wireless power transmission using the resonance coupling method, resonance occurs in the electronic device 200 by a wireless power signal transmitted from the wireless power transmitter 100, and the wireless power transmitter 100 is caused by the resonance phenomenon. The power is transmitted to the electronic device 200 from).

Hereinafter, embodiments of the wireless power transmitter 100 and the electronic device 200 disclosed herein will be described in detail. In adding reference numerals to the components of the following drawings, the same components are used the same reference numerals as much as possible even if they are displayed on different drawings.

2 is a block diagram exemplarily illustrating a configuration of a wireless power transmission apparatus 100 and an electronic device 200 that can be employed in the embodiments disclosed herein.

Referring to FIG. 2A, the wireless power transmitter 100 is configured to include a power transmission unit 110. The power transmission unit 110 may include a power conversion unit 111 and a power transmission control unit 112.

The power conversion unit 111 converts the power supplied from the transmission power supply unit 190 into a wireless power signal and transmits the wireless power signal to the electronic device 200. The wireless power signal transmitted by the power converter 111 is formed in the form of a magnetic field or an electromagnetic field having an oscillation characteristic. To this end, the power converter 111 may be configured to include a coil for generating the wireless power signal.

The power converter 111 may include a component for forming a wireless power signal of a different type according to each power transmission scheme. For example, the power converter 111 may be configured to include a primary coil forming a magnetic field that changes in order to induce a current in the secondary coil of the electronic device 200 according to an inductive coupling method. In addition, the power converter 111 may be configured to include a coil (or antenna) for forming an electromagnetic field having a specific resonance frequency in order to generate a resonance phenomenon in the electronic device 200 according to a resonance coupling method.

In addition, the power converter 111 may transfer power using at least one of the above-described inductive coupling method and resonance coupling method.

Among the components included in the power converter 111, those that follow the inductive coupling method will be described below with reference to FIGS. 4 and 5, and those that follow the resonance coupling method with reference to FIGS. 7 and 8.

The power conversion unit 111 may further include a circuit for adjusting characteristics of a frequency, an applied voltage, and a current used for forming the wireless power signal.

The power transmission control unit 112 controls each component included in the power transmission unit 110. The power transmission control unit 112 may be implemented to be integrated with another control unit (not shown) that controls the wireless power supply device 100.

Meanwhile, an area where the wireless power signal can reach can be divided into two types. First, an active area refers to a region through which a wireless power signal that transmits power to the electronic device 200 passes. Next, a semi-active area refers to an area of interest in which the wireless power transmission apparatus 100 can detect the presence of the electronic device 200. [

Here, the power transmission control unit 112 may detect whether the electronic device 200 is placed in or removed from the active area or the sensing area. Specifically, the power transmission control unit 112 determines whether the electronic device 200 is located in the active area or the sensing area by using a wireless power signal formed in the power conversion unit 111 or a sensor provided separately Or not.

For example, the power transmission control unit 112 receives the wireless power signal due to the electronic device 200 existing in the sensing area, and controls the power for the wireless power signal of the power conversion unit 111 The presence of the electronic device 200 can be detected by monitoring whether or not the characteristics of the electronic device 200 change. However, the active area and the sensing area may differ depending on a wireless power transmission scheme such as an inductive coupling scheme and a resonant coupling scheme.

The power transmission control unit 112 may perform the process of identifying the electronic device 200 or may determine whether to start the wireless power transmission according to a result of detecting the presence of the electronic device 200.

The power transmission control unit 112 may determine at least one of a frequency, a voltage, and a current of the power conversion unit 111 for forming the wireless power signal. The determination of the characteristics may be made according to conditions on the side of the wireless power transmission apparatus 100 or on conditions of the electronic device 200 side.

The power transmission control unit 112 may receive a power control message from the electronic device 200. [ The power transmission control unit 112 may determine one or more characteristics of the frequency, voltage, and current of the power conversion unit 111 based on the received power control message, and other control based on the power control message. You can perform the operation.

For example, the power transmission control unit 112 may be used to form the wireless power signal according to a power control message including at least one of the rectified power amount information, the charging status information and the identification information of the electronic device 200 One or more characteristics of the frequency, current, and voltage can be determined.

In addition, as another control operation using the power control message, the wireless power transmitter 100 may perform a general control operation related to wireless power transfer based on the power control message. For example, the wireless power transmitter 100 may receive information to be output acoustically or visually related to the electronic device 200 through the power control message, or may receive information necessary for authentication between devices. .

In order to receive the power control message, the power transmission control unit 112 may use at least one of a method of receiving through the wireless power signal and a method of receiving other user data.

In order to receive the power control message, the wireless power transmitter 100 may further include a power demodulation / demodulation unit 113 electrically connected to the power converter 111. . The modem unit 113 may be used to demodulate the wireless power signal modulated by the electronic device 200 and receive the power control message. A method for the power converter 111 to receive a power control message using a wireless power signal will be described below with reference to FIGS. 11 to 15.

In addition, the power transmission control unit 112 may obtain a power control message by receiving user data including a power control message by a communication means (not shown) included in the wireless power transmitter 100. have.

Referring to FIG. 2B, the electronic device 200 is configured to include a power supply unit 290. The power supply unit 290 supplies power required for the operation of the electronic device 200. The power supply unit 290 may include a power receiving unit 291 and a power receiving control unit 292.

The power receiver 291 receives power transmitted wirelessly from the wireless power transmitter 100. The power receiver 291 may include components required to receive the wireless power signal according to a wireless power transfer method. In addition, the power receiver 291 may receive power according to one or more wireless power transfer schemes. In this case, the power receiver 291 may include necessary components according to each scheme.

First, the power receiver 291 may be configured to include a coil for receiving a wireless power signal transmitted in the form of a magnetic or electromagnetic field having a vibrating characteristic. For example, as a component according to an inductive coupling method, the power receiver 291 may include a secondary coil in which a current is induced by a changing magnetic field. In addition, the power receiver 291 may include a coil and a resonance circuit in which a resonance phenomenon is generated by an electromagnetic field having a specific resonance frequency as a component according to a resonance coupling method.

However, when the power receiver 291 receives power according to one or more wireless power transfer schemes, the power receiver 291 is implemented to receive using one coil, or differently formed according to each power transfer scheme. It may be implemented to receive using a coil. Among the components included in the power receiver 291, those following the inductive coupling method will be described with reference to FIG. 4, and those following the resonance coupling method will be described below with reference to FIG. 7.

Meanwhile, the power receiving unit 291 may further include a rectifier and a regulator for converting the radio power signal into a direct current. The power receiving unit 291 may further include a circuit for preventing an overvoltage or an overcurrent from occurring due to the received power signal.

The power reception control unit 292 controls each component included in the power supply unit 290. In detail, the power reception control unit 292 may transmit a power control message to the wireless power transmitter 100. The power control message may instruct the wireless power transmitter 100 to start or end the transmission of the wireless power signal. In addition, the power control message may instruct the wireless power transmitter 100 to adjust characteristics of the wireless power signal.

In order to transmit the power control message, the power reception control unit 292 may use at least one of a method of transmitting through the wireless power signal and a method of transmitting through other user data.

In order to transmit the power control message, the electronic device 200 may further include a power communication modulation / demodulation unit 293 electrically connected to the power receiving unit 291. The modulation and demodulation unit 293 may be used to transmit the power control message through the wireless power signal as in the case of the wireless power transmitter 100 described above.

The modulation and demodulation unit 293 may be used as a means for adjusting a current and / or a voltage flowing through the power converter 111 of the wireless power transmitter 100. Hereinafter, a method in which the modulation and demodulation units 113 and 293 on the side of the wireless power transmission apparatus 100 and the side of the electronic device 200 are used for transmission and reception of a power control message through a wireless power signal will be described.

The wireless power signal formed by the power converter 111 is received by the power receiver 291. In this case, the power reception control unit 292 controls the modulation and demodulation unit 293 on the electronic device 200 side to modulate the wireless power signal. For example, the power reception control unit 292 may perform a modulation process such that the amount of power received from the wireless power signal varies according to the reactance of the modulation / demodulation unit 293 connected to the power reception unit 291. have.

A change in the amount of power received from the wireless power signal results in a change in the current and / or voltage of the power conversion unit 111 forming the wireless power signal. At this time, the demodulation unit 113 on the side of the wireless power transmitter 100 senses a change in current and / or voltage of the power converter 111 and performs a demodulation process.

That is, the power reception control unit 292 generates a packet including a power control message to be transmitted to the wireless power transmitter 100 to modulate the wireless power signal to include the packet, and the power The transmission controller 112 may acquire the power control message included in the packet by decoding the packet based on a result of the demodulation process performed by the modulation / demodulator 113. A detailed method of obtaining the power control message by the wireless power transmitter 100 will be described later with reference to FIGS. 10 to 13.

In addition, the power receiving control unit 292 transmits a power control message by transmitting user data including a power control message by a communication means (not shown) included in the electronic device 200. Or transmit to 100.

In addition, the power supply unit 290 may be configured to further include a charging unit 298 and a battery 299.

The electronic apparatus 200 receiving power for operation from the power supply unit 290 operates by the power transmitted from the wireless power transmission apparatus 100 or by using the transmitted power to operate the battery 299 The battery 299 can be operated by the electric power charged in the battery 299. At this time, the power receiving control unit 292 may control the charging unit 298 to perform charging using the transmitted power.

Hereinafter, a wireless power transmission apparatus and an electronic apparatus applicable to the embodiments disclosed herein will be described. First, a method of transferring power to the electronic device by the inductive coupling method will be described with reference to FIGS. 3 to 5.

3 illustrates a concept of wirelessly transferring power from a wireless power transmitter to an electronic device according to an inductive coupling method.

When the power transmission of the wireless power transmission apparatus 100 follows the inductive coupling scheme, when the intensity of the current flowing through the primary coil in the power transmission unit 110 is changed, the primary coil The passing magnetic field changes. The thus changed magnetic field generates an induced electromotive force on the secondary coil side of the electronic device 200.

According to this scheme, the power converter 111 of the wireless power transmitter 100 is configured to include a transmission coil (Tx coil) 1111a that acts as a primary coil in magnetic induction. Also, the power receiving unit 291 of the electronic device 200 is configured to include a receiving coil (Rx coil) 2911a that operates as a secondary coil in magnetic induction.

The wireless power transmission apparatus 100 and the electronic apparatus 200 are arranged so that the transmission coil 1111a on the wireless power transmission apparatus 100 side and the reception coil on the electronic apparatus 200 side are close to each other. When the power transmission control unit 112 controls the current of the transmission coil 1111a to be changed, the power receiving unit 291 transmits the power to the electronic device 200 using the electromotive force induced in the receiving coil 2911a. As shown in FIG.

The efficiency of the wireless power transmission by the inductively coupled system has a small influence on the frequency characteristics but is influenced by the alignment and distance between the wireless power transmission apparatus 100 including the coils and the electronic apparatus 200, (distance).

Meanwhile, the wireless power transmission apparatus 100 may be configured to include an interface surface (not shown) in the form of a flat surface for wireless power transmission by the inductive coupling method. One or more electronic devices may be placed on an upper portion of the interface surface, and the transmitting coil 1111a may be mounted on a lower portion of the interface surface.

In this case, a vertical spacing between the transmitting coil 1111a mounted below the interface surface and the receiving coil 2911a of the electronic device 200 located above the interface surface is formed to be small. The distance between them is small enough to allow efficient wireless power transfer by inductive coupling.

In addition, an arrangement indicator (not shown) may be formed on an upper surface of the interface to indicate a position where the electronic device 200 is to be placed. The arrangement instruction unit indicates a position of the electronic device 200 in which the arrangement between the transmission coil 1111a mounted on the lower surface of the interface and the reception coil 2911a can be made suitable.

The arrangement indicating unit may be a simple mark or may be formed in the form of a protruding structure that guides the position of the electronic device 200. Alternatively, the arrangement indicating unit may be formed in the form of a magnetic body such as a magnet mounted below the interface surface, so that the coils may be arranged in a proper arrangement by mutual attraction with a magnetic body of another pole mounted inside the electronic device 200. You can also guide.

Meanwhile, the wireless power transmission apparatus 100 may be formed to include one or more transmission coils. The wireless power transmission apparatus 100 may selectively increase the power transmission efficiency by selectively using a part of the coils appropriately arranged with the reception coil 2911a of the electronic device 200 among the one or more transmission coils. The wireless power transmission apparatus 100 including the one or more transmission coils will be described below with reference to Fig.

Hereinafter, a configuration of an inductive coupling type wireless power transmission apparatus and an electronic apparatus applicable to the embodiments disclosed herein will be described in detail.

4 is a block diagram exemplarily illustrating a part of a configuration of an electromagnetic induction type wireless power transmitter 100 and an electronic device 200 that may be employed in the embodiments disclosed herein. A configuration of the power transmission unit 110 included in the wireless power transmitter 100 will be described with reference to FIG. 4A, and the electronic device 200 will be described with reference to FIG. 4B. The configuration of the included power supply unit 290 will be described.

Referring to FIG. 4A, the power converter 111 of the wireless power transmitter 100 may be configured to include a transmission coil (Tx coil) 1111a and an inverter 1112.

As described above, the transmitting coil 1111a forms a magnetic field corresponding to the wireless power signal according to the change of the current. The transmission coil 1111a may be implemented in a planar spiral type or a cylindrical solenoid type.

The inverter 1112 transforms a DC input obtained from the power supply unit 190 into an AC waveform. An alternating current deformed by the inverter 1112 is formed in the transmission coil 1111a by driving a resonant circuit including the transmission coil 1111a and a capacitor (not shown) .

In addition, the power conversion unit 111 may be configured to further include a positioning unit 1114.

The positioning unit 1114 may move or rotate the transmitting coil 1111a to increase the efficiency of wireless power transfer by the inductive coupling method. This is because, as described above, the power transmission by the inductively coupled method is performed by the arrangement and distance between the wireless power transmission apparatus 100 including the primary and secondary coils and the electronic apparatus 200, . Particularly, the positioning unit 1114 can be used when the electronic device 200 is not present in the active area of the wireless power transmission apparatus 100.

Therefore, the positioning unit 1114 has a distance between the centers of the transmitting coil 1111a of the wireless power transmitter 100 and the receiving coil 2911a of the electronic device 200 within a predetermined range. And a driving unit (not shown) to move the transmitting coil 1111a or to rotate the transmitting coil 1111a so that the centers of the transmitting coil 1111a and the receiving coil 2911a overlap. Can be.

For this, the wireless power transmission apparatus 100 may further include a position detection unit (not shown) configured to detect a position of the electronic device 200, and the power transmission control unit 112 May control the positioning unit 1114 based on positional information of the electronic device 200 received from the position sensor.

To this end, the power transmission control unit 112 receives control information on the arrangement or distance with the electronic device 200 through the modulation / demodulation unit 113, and based on the received control information on the arrangement or distance, The positioning unit 1114 can be controlled.

If the power conversion unit 111 is configured to include a plurality of transmission coils, the positioning unit 1114 can determine which of the plurality of transmission coils is to be used for power transmission. The configuration of the wireless power transmission apparatus 100 including the plurality of transmission coils will be described later with reference to Fig.

Meanwhile, the power conversion unit 111 may be configured to further include a power sensing unit 1115. The power sensing unit 1115 on the side of the wireless power transmission apparatus 100 monitors the current or voltage flowing in the transmission coil 1111a. The power sensing unit 1115 detects a voltage or current of a power source supplied from outside and determines whether the detected voltage or current exceeds a threshold value Can be confirmed.

The power sensing unit 1115 compares a voltage or current value of the detected power source with a threshold value and outputs a result of the comparison. And a comparator. Based on the result of the detection by the power sensing unit 1115, the power transmission control unit 112 may control the switching unit (not shown) to cut off the power applied to the transmission coil 1111a.

Referring to FIG. 4B, the power supply unit 290 of the electronic device 200 may be configured to include a receiving coil (Rx coil) 2911a and a rectifier circuit 2913.

The current is induced in the receiving coil 2911a by the change in the magnetic field formed from the transmitting coil 1111a. The implementation form of the receiving coil 2911a may be in the form of a flat spiral or a cylindrical solenoid, as in the case of the transmitting coil 1111a.

In addition, series and parallel capacitors may be connected to the receiving coil 2911a to increase reception efficiency of wireless power or to detect resonance.

The receiving coil 2911a may be in the form of a single coil or a plurality of coils.

The rectifier circuit 2913 performs full-wave rectification on the current to convert an alternating current into a direct current. The rectifier circuit 2913 may be implemented as, for example, a full bridge rectifier circuit consisting of four diodes or a circuit using active components.

In addition, the rectifier circuit 2913 may further include a smoothing circuit (regulator) to make the rectified current to a more flat and stable direct current. In addition, the output power of the rectifier circuit 2913 is supplied to each component of the power supply 290. In addition, the rectifier circuit 2913 converts the output DC power to an appropriate voltage to match the power required for each component of the power supply unit 290 (for example, a circuit such as the charging unit 298). (DC-DC converter) may further include.

The modulation and demodulation unit 293 is connected to the power receiver 291, and may be configured as a resistive element having a change in resistance with respect to a direct current, and a capacitive element having a reactance with respect to an alternating current. Can be. The power reception control unit 292 may modulate the wireless power signal received by the power reception unit 291 by changing the resistance or reactance of the modulation and demodulation unit 293.

The power supply unit 290 may further include a power sensing unit 2914. The power sensing unit 2914 of the electronic device 200 monitors the voltage and / or current of the power source rectified by the rectifying circuit 2913, and if the voltage and / or current of the rectified power source If the threshold value is exceeded, the power reception control unit 292 transmits a power control message to the wireless power transmission apparatus 100 to transmit appropriate power.

FIG. 5 is a block diagram of a wireless power transmitter configured to have one or more transmitting coils receiving power according to an inductive coupling scheme that may be employed in the embodiments disclosed herein.

Referring to FIG. 5, the power conversion section 111 of the wireless power transmission apparatus 100 according to the embodiments disclosed herein may be configured with one or more transmission coils 1111a-1 to 1111a-n. The one or more transmitting coils 1111a-1 to 1111a-n may be an array of partly overlapping primary coils. An active area may be determined by some of the one or more transmitting coils.

The one or more transmitting coils 1111a-1 to 1111a-n may be mounted below the interface surface. In addition, the power converter 111 may further include a multiplexer 1113 for establishing and releasing the connection of some of the one or more transmission coils 1111a-1 to 1111a-n.

When the position of the electronic device 200 located on the interface surface is sensed, the power transmission control unit 112 controls the power of the one or more transmission coils 1111a-1 to 1111a-1, considering the sensed position of the electronic device 200. [ 1111a-n may be connected to the receiving coil 2911a of the electronic device 200. In this case,

For this, the power transmission control unit 112 may acquire position information of the electronic device 200. For example, the power transmission control unit 112 may acquire the position of the electronic device 200 on the interface surface by the position sensing unit (not shown) included in the wireless power transmitter 100. .

As another example, the power transmission control unit 112 may use the one or more transmission coils 1111a-1 to 1111a-n, respectively, to indicate a power control message indicating the strength of a wireless power signal from an object on the interface surface; The location information of the electronic device 200 may be obtained by receiving a power control message indicating the identification information of the object and determining which one of the one or more transmission coils is close to the location of the one or more transmission coils based on the received result. have.

On the other hand, the active area may be a part of the interface surface, and may refer to a portion where a high efficiency magnetic field can pass when the wireless power transmission apparatus 100 transmits power wirelessly to the electronic device 200 . In this case, a single transmitting coil or a combination of one or more transmitting coils forming a magnetic field passing through the active region may be referred to as a primary cell.

Accordingly, the power transmission control unit 112 determines an active area based on the detected position of the electronic device 200, establishes a connection of a main cell corresponding to the active area, and receives the electronic device 200. The multiplexer 1113 may be controlled such that the coil 2911a and the coils belonging to the main cell may be in an inductive coupling relationship.

In addition, the power converter 111 may further include an impedance matching unit (not shown) for adjusting the impedance to form a resonant circuit with the connected coils.

Hereinafter, a method of transferring power by a wireless power transmitter in accordance with a resonance coupling method will be described with reference to FIGS. 6 to 8.

6 illustrates a concept in which power is wirelessly transmitted from a wireless power transmitter to an electronic device according to a resonance coupling method.

First, the resonance (or resonance) will be briefly described as follows. Resonance refers to a phenomenon in which the vibration system receives a periodic external force having the same frequency as its natural frequency, and the amplitude increases markedly. Resonance is a phenomenon that occurs in all vibrations, including mechanical and electrical vibrations. In general, when a force capable of vibrating the vibration system from the outside, if the natural frequency of the vibration system and the frequency of the force applied from the outside is the same, the vibration is severe and the amplitude is also large.

In the same principle, when a plurality of vibrating bodies that are separated within a certain distance vibrate at the same frequency with each other, the plurality of vibrating bodies resonate with each other, in which case the resistance between the plurality of vibrating bodies decreases. In an electric circuit, an inductor and a capacitor can be used to make a resonant circuit.

When power transmission of the wireless power transmitter 100 follows a resonance coupling method, an electromagnetic field having a specific vibration frequency is formed by the AC power in the power transmission unit 110. When a resonance phenomenon occurs in the electronic device 200 due to the formed electromagnetic field, power is generated in the electronic device 200 by the resonance phenomenon.

The resonance frequency may be determined by, for example, the following equation (1).

Here, the resonance frequency f is determined by the inductance L and the capacitance C in the circuit. In a circuit for forming an electromagnetic field using a coil, the inductance may be determined by the number of rotations of the coil, etc., and the capacitance may be determined by the distance, area, etc. between the coils. In order to determine the resonance frequency, a capacitive resonance circuit other than the coil may be configured to be connected.

Referring to FIG. 6, when power is wirelessly transmitted according to a resonance coupling method, the power converter 111 of the wireless power transmitter 100 may include a transmission coil 1111b in which an electromagnetic field is formed. It may be configured to include a resonant circuit 1116 connected to the transmitting coil 1111b and for determining a specific vibration frequency. The resonant circuit 1116 may be implemented using capacitors, and the specific vibration frequency is determined based on the inductance of the transmission coil 1111b and the capacitance of the resonant circuit 1116.

The circuit element of the resonant circuit 1116 may be configured in various forms so that the power converter 111 may form an electromagnetic field, and may be connected in parallel with the transmission coil 1111b as shown in FIG. 6. It is not limited.

In addition, the power receiver 291 of the electronic device 200 includes a resonance circuit 2912 and a Rx coil 2911b configured to cause a resonance phenomenon by an electromagnetic field formed in the wireless power transmitter 100. ). That is, the resonant circuit 2912 may also be implemented using a capacitive circuit, and the resonant circuit 2912 is determined based on the inductance of the receiving coil 2911b and the capacitance of the resonant circuit 2912. The resonant frequency is configured to be equal to the resonant frequency of the formed electromagnetic field.

 The circuit element of the resonant circuit 2912 may be configured in various forms such that the power receiver 291 may cause resonance by the electromagnetic field, and is connected in series with the receiving coil 2911b as shown in FIG. 6. It is not limited in form.

The specific vibration frequency in the wireless power transmitter 100 may be obtained using Equation 1 with L _Tx and C _Tx . Here, when the result of substituting L _Rx and C _Rx of the electronic device 200 into Equation 1 is equal to the specific vibration frequency, resonance occurs in the electronic device 200.

According to the wireless power transmission method using resonance coupling, when the wireless power transmitter 100 and the electronic device 200 each resonate at the same frequency, electromagnetic waves are transmitted through a near field, so that energy between the devices is different when the frequencies are different. There is no delivery.

Therefore, the efficiency of the wireless power transmission by the resonance coupling method is largely influenced by the frequency characteristics. On the other hand, the arrangement and distance between the wireless power transmission apparatus 100 including the coils and the electronic apparatus 200 The effect of the inductive coupling is relatively small compared to the inductive coupling method.

Hereinafter, a configuration of a resonant coupling type wireless power transmission apparatus and an electronic apparatus applicable to the embodiments disclosed herein will be described in detail.

FIG. 7 is a block diagram exemplarily illustrating a part of a configuration of a wireless power transmitter 100 and an electronic device 200 of a resonance type that may be employed in the embodiments disclosed herein.

A configuration of the power transmission unit 110 included in the wireless power transmitter 100 will be described with reference to FIG. 7A.

The power converter 111 of the wireless power transmitter 100 may be configured to include a transmission coil (Tx coil) 1111b, an inverter 1112, and a resonant circuit 1116. The inverter 1112 may be configured to be connected to the transmitting coil 1111b and the resonant circuit 1116.

The transmitting coil 1111b may be mounted separately from the transmitting coil 1111a for transmitting power according to the inductive coupling method, but may also be configured to transmit power in an inductive coupling method and a resonance coupling method using one single coil.

As described above, the transmitting coil 1111b forms electromagnetic waves for transmitting power. When the AC coil is applied to the transmission coil 1111b and the resonant circuit 1116, vibration may occur. In this case, the vibration frequency is based on the inductance of the transmission coil 1111b and the capacitance of the resonant circuit 1116. Can be determined.

To this end, the inverter 1112 transforms the DC input obtained from the power supply unit 190 into an AC waveform, and the modified AC current is applied to the transmission coil 1111b and the resonance circuit 1116.

In addition, the power converter 111 may be configured to further include a frequency adjuster 1117 for changing the resonance frequency value of the power converter 111. Since the resonant frequency of the power converter 111 is determined based on inductance and capacitance in the circuit constituting the power converter 111 by Equation 1, the power transmission controller 112 is the inductance and / or The resonance frequency of the power converter 111 may be determined by controlling the frequency adjusting unit 1117 to change the capacitance.

The frequency adjusting unit 1117 may include, for example, a motor capable of changing capacitance by adjusting a distance between capacitors included in the resonant circuit 1116, or the number of rotations of the transmission coil 1111b ( number of turns) or a motor that can change the inductance by adjusting its diameter, or can be configured to include active elements that determine the capacitance and / or inductance.

Meanwhile, the power conversion unit 111 may be configured to further include a power sensing unit 1115. The operation of the power sensing unit 1115 is the same as described above.

A configuration of the power supply unit 290 included in the electronic device 200 will be described with reference to FIG. 7B. As described above, the power supply unit 290 may be configured to include the Rx coil 2911b and the resonant circuit 2912.

In addition, the power receiver 291 of the power supply unit 290 may be configured to further include a rectifier circuit 2913 for converting the alternating current generated by the resonance phenomenon into a direct current. The rectifier circuit 2913 may be configured in the same manner as described above.

The power receiving unit 291 may further include a power sensing unit 2914 for monitoring the voltage and / or current of the rectified power. The power sensing unit 2914 may be configured as described above.

FIG. 8 is a block diagram of a wireless power transmitter configured to have one or more transmitting coils receiving power in accordance with a resonant coupling scheme employable in embodiments disclosed herein.

Referring to FIG. 8, the power conversion unit 111 of the wireless power transmitter 100 according to the embodiments disclosed herein is connected to one or more transmission coils 1111b-1 to 1111b-n and respective transmission coils. It may be configured to include the resonant circuit (1116-1 to 1116-n). In addition, the power converter 111 may further include a multiplexer 1113 for establishing and releasing connection of some of the one or more transmission coils 1111b-1 to 1111b-n. .

The one or more transmitting coils 1111b-1 to 1111b-n may be set to have the same resonant frequency, or some of them may be set to have different resonant frequencies. This is determined by what inductance and / or capacitance the resonant circuits 1116-1 through 1116-n respectively connected with the one or more transmitting coils 1111b-1 through 1111b-n have.

To this end, the frequency adjusting unit 1117 may change inductance and / or capacitance of the resonant circuits 1116-1 to 1116-n respectively connected to the one or more transmission coils 1111b-1 to 1111b-n. It can be configured to be.

Meanwhile, an example of the wireless power transmission apparatus implemented in the form of a wireless charger will be described below.

FIG. 9 is a block diagram illustrating a wireless power transmitter further including an additional configuration in addition to the configuration illustrated in FIG. 2A.

9, the wireless power transmission apparatus 100 includes a power transmission unit 110 and a power supply unit 190 that support at least one of the inductive coupling method and the resonant coupling method described above, And may further include a sensor unit 120, a communication unit 130, an output unit 140, a memory 150, and a control unit 180.

The power transmitter 110 forms an area in which power can be wirelessly transmitted using a wireless power signal, and detects the electronic device 200 in an area in which power can be wirelessly transmitted. The wireless power signal may be a signal for detecting the electronic device 200. In this case, the power transmission unit 110 may receive a response to the wireless power signal, and detect the electronic device 200 in an area in which power can be wirelessly transmitted based on the response.

In addition, the power transmission unit 110 may receive at least one of identification information and setting information of the electronic device 200. In addition, the power transmission unit 110 may wirelessly transmit power to the electronic device 200.

The sensor unit 120 may be configured to include a sensor for sensing the position of the electronic device 200. The position information sensed by the sensor unit 120 may be used to allow the power conversion unit 110 to efficiently transmit power.

For example, in the case of wireless power transfer by an inductive coupling method, the sensor unit 120 may operate as a detection unit, and the position information detected by the sensor unit 120 may include the power conversion unit ( It can be used to move or rotate the transmitting coil 1111a in 111.

In addition, for example, the wireless power transmitter 100 including one or more of the above-described transmission coils may be configured to include the electronic device 200 of the one or more transmission coils based on the location information of the electronic device 200. Coils may be determined that may be in an inductive coupling relationship or a resonance coupling relationship with the receiving coil.

Meanwhile, the sensor unit 120 may be configured to monitor whether the electronic device 200 is approaching a chargeable area. The accessibility detection function of the sensor unit 120 may be performed separately or in combination with the function of the power transmission control unit 112 in the power transmission unit 110 to detect whether the electronic device 200 is approaching .

The communication unit 130 performs wired and wireless data communication with the electronic device 200. The communication unit 130 may include an electronic component for any one or more of Bluetooth ^TM , Zigbee, Ultra Wide Band (UWB), Wireless USB, Near Field Communication (NFC), and Wireless LAN. The communicator 130 may receive content from the electronic device 200. For example, the communicator 130 may transmit a content transmission request from the electronic device 200 and receive the content from the electronic device 200 according to the transmission request.

The output unit 140 includes at least one of a display unit 141 and an audio output unit 142. The display unit 141 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) a flexible display, and a 3D display. The display unit 141 may display a state of charge according to the control of the controller 180.

The display unit 141 displays a menu for transmitting content. In addition, the display unit 141 displays a list of a plurality of electronic devices that can receive content.

The memory 150 may store a program for the operation of the controller 180 and may temporarily store input / output data. In addition, the memory 150 may store a setting program related to wireless power reception or wireless charging. The setting program may be executed by the controller 180. The memory 150 stores the content received from the electronic device 200. The content may include content data and reproduction information of the content data.

In addition, the content may be content being reproduced in the electronic device 200 at a time when the electronic device 200 is detected in an area in which the electronic device 200 can transmit power wirelessly. Alternatively, the content may be content corresponding to an event generated in the electronic device 200 while the electronic device 200 is detected in an area in which the electronic device 200 can transmit power wirelessly.

The controller 180 controls the power transmission unit 110, the sensor unit 120, the communication unit 130, the output unit 140, the memory 150, and the power supply unit 190. The controller 180 may be implemented as a separate module or a single module from the power transmission control unit 112 in the power transmission unit 110 described with reference to FIG. 2.

The controller 180 controls the communicator 130 to transmit the content stored in the memory 150 to an electronic device which is not detected in the wirelessly transferable area. In addition, the controller 180 deletes the content from the memory 150 when the electronic device 200 is no longer detected in the area capable of transferring power wirelessly.

In addition, when the power transmission unit 110 receives at least one of the identification information and the setting information from the electronic device 200, the control unit 180 is connected to at least one of the identification information and the setting information. Control to establish a connection with the electronic device 200 based thereon. In addition, the controller 180 may wirelessly transfer power stored in the memory 150 by the communication unit 130 while the power transmission unit 110 wirelessly transmits power to the electronic device 200. Control to transmit to electronic devices not detected in the area.

In addition, the controller 180 reproduces the content data based on the reproduction information of the content data, and the communication unit 130 is not detected in an area in which the output signal generated according to the reproduction can be delivered to the wireless. Control to send to electronic devices.

In addition, the controller 180 transmits the reproduction information to an electronic device that is not detected in the area where the communication unit 130 can transmit power wirelessly, and other electronic devices that are not detected in the area where the power can be transmitted wirelessly. Control to transmit the content data.

In addition, the controller 180 controls the communication unit 130 to transmit the content stored in the memory 150 to an electronic device that is not detected in the area capable of wirelessly transmitting power using the streaming method.

The power supply unit 190 supplies power to each module in the wireless power transmitter 100.

In addition, the wireless power transmitter 100 may further include an input unit (not shown) for receiving a user input. The input unit receives an input for selecting a menu for transmitting the content displayed by the display unit 141. In this case, the controller 180 receives the content from an electronic device detected in an area in which the communication unit 130 can transfer power wirelessly, and transfers the content stored in the memory 150 to the wireless power. Control to transmit to an electronic device not detected in the possible area.

In addition, the input unit receives an input for selecting an electronic device to transmit the content from a list of a plurality of electronic devices capable of receiving the content displayed by the display unit 141.

The configuration of the wireless power transmitter according to the exemplary embodiment disclosed above may be applied to devices such as docking stations, terminal cradle devices, and other electronic devices, except when applicable only to the wireless charger. It will be apparent to those skilled in the art that the present invention may be used.

10 shows a configuration in which the electronic device 200 according to the embodiments disclosed herein is implemented in the form of a mobile terminal.

The mobile communication terminal 200 includes a power supply unit 290 illustrated in FIG. 2, 4, or 7.

The terminal 200 includes a wireless communication unit 210, an audio / video input unit 220, a user input unit 230, a sensing unit 240, an output unit 250, a memory 260, An interface unit 270, and a control unit 280. The components shown in FIG. 10 are not essential, so a terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 210 can perform wireless communication between the terminal 200 and the wireless communication system or between the terminal 200 and the network where the terminal 200 is located or between the terminal 200 and the wireless power transmission apparatus 100 One or more modules. For example, the wireless communication unit 210 may include a broadcast receiving module 211, a mobile communication module 212, a wireless Internet module 213, a short distance communication module 214, and a location information module 215 .

The broadcast receiving module 211 receives broadcast signals and / or broadcast-related information from an external broadcast center through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast center may refer to a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 212.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module 211 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 211 may be configured to be suitable for not only the above-described digital broadcast system but also other broadcast systems.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 211 may be stored in the memory 260.

The mobile communication module 212 transmits and receives a radio signal to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 213 is a module for wireless Internet access, and may be built in or externally attached to the terminal 200. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 214 is a module for short range communication. As a wireless short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used. On the other hand, a wired local area communication may be used, such as USB (Universal Serial Bus), IEEE 1394, Intel Thunderbolt.

The wireless Internet module 213 or the local area communication module 214 may establish a data communication connection with the wireless power transmission apparatus 100.

The position information module 215 is a module for acquiring the position of the terminal, for example, a Global Position System (GPS) module.

Referring to FIG. 10, an A / V (Audio / Video) input unit 220 is for inputting an audio signal or a video signal, and may include a camera 221 and a microphone 222. The camera 221 processes an image frame such as a still image or a video obtained by an image sensor in a video call mode or a photographing mode. The processed image frame can be displayed on the display unit 251. [

The image frame processed by the camera 221 may be stored in the memory 260 or transmitted to the outside through the wireless communication unit 210. At least two cameras 221 may be provided depending on the use environment.

The microphone 222 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data may be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 212 when the voice data is in the call mode, and output. Various noise elimination algorithms may be implemented in the microphone 222 to remove noise generated in receiving an external sound signal.

The user input unit 230 generates input data for the user to control the operation of the terminal. The user input unit 230 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 240 may include a proximity sensor 241, a pressure sensor 242, a motion sensor 243, and the like. The proximity sensor 241 can detect an object approaching the mobile terminal 200 or the presence of an object in the vicinity of the mobile terminal 200 without mechanical contact. The proximity sensor 241 can detect a nearby object by using the change of the alternating magnetic field or the change of the static magnetic field, or the rate of change of the capacitance. The proximity sensor 241 may be provided with two or more according to the configuration aspect.

The pressure sensor 242 can detect whether pressure is applied to the mobile terminal 200, the magnitude of the pressure, and the like. The pressure sensor 242 may be installed at a position where the pressure of the mobile terminal 200 needs to be detected according to the use environment. If the pressure sensor 242 is installed on the display unit 251, a touch input through the display unit 251 and a pressure greater than a touch input To identify the applied pressure touch input. In addition, the magnitude of the pressure applied to the display unit 251 when the pressure touch is input can be determined according to the signal output from the pressure sensor 242.

The motion sensor 243 detects the position or movement of the mobile terminal 200 using an acceleration sensor, a gyro sensor, or the like. An acceleration sensor that can be used in the motion sensor 243 is an element that converts an acceleration change in one direction into an electric signal. Acceleration sensors are usually constructed by mounting two or three axes in one package. Depending on the usage environment, only one axis of Z axis is required. Therefore, when the acceleration sensor in the X-axis direction or the Y-axis direction is used instead of the Z-axis direction for some reason, the acceleration sensor may be mounted on the main substrate by using a separate piece substrate. In addition, the gyro sensor is a sensor for measuring the angular velocity of the mobile terminal 200, which is rotating, and can sense a rotated angle with respect to each reference direction. For example, the gyro sensor may detect respective rotation angles, ie, azimuth, pitch, and roll, based on three axes.

The output unit 250 includes a display unit 251, an audio output module 252, an alarm unit 253, a haptic module 254, and the like, for generating output related to visual, auditory, .

The display unit 251 displays (outputs) information processed by the terminal 200. [ For example, when the terminal is in the call mode, the terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the terminal 200 is in a video call mode or a photographing mode, the terminal 200 displays a photographed and / or received image, a UI, or a GUI.

The display unit 251 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparent OLED). The rear structure of the display unit 251 may also be configured as a light transmissive structure. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 251 of the terminal body.

There may be two or more display units 251 according to the embodiment of the terminal 200. For example, in the terminal 200, a plurality of display units may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 251 and a sensor (hereinafter, referred to as a 'touch sensor') for sensing a touch operation form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display portion 251 or a capacitance generated in a specific portion of the display portion 251 to an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 280. Thus, the control unit 280 can know which area of the display unit 251 is touched or the like.

A proximity sensor 241 may be disposed in an inner region of the terminal to be wrapped by the touch screen or in the vicinity of the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The audio output module 252 can output audio data received from the wireless communication unit 210 or stored in the memory 260 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 252 may also output a sound signal related to a function (for example, a call signal reception sound or a message reception sound) performed in the terminal 200. The sound output module 252 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 253 outputs a signal for notifying the terminal 200 of an event occurrence. Examples of events generated in the terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 253 may output a signal for informing occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 251 or the audio output module 252 so that they may be classified as a part of the alarm unit 253. [

The haptic module 254 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 254 is vibration. The intensity and pattern of the vibration generated by the hit module 254 and the like are controllable. For example, different vibrations may be synthesized and output or sequentially output.

In addition to vibration, the haptic module 254 can be used for a variety of applications including, but not limited to, a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 254 can be implemented not only to transmit the tactile effect through direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. The haptic module 254 may include two or more haptic modules according to the configuration of the terminal 200.

The memory 260 may store a program for the operation of the control unit 280 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 260 may store data on vibration and sound of various patterns output when a touch is input on the touch screen.

The memory 260 may also store a configuration program associated with wireless power transmission or wireless charging. The setting program may be executed by the control unit 280. [

In addition, the memory 260 may store an application related to wireless power transmission (or wireless charging) downloaded from an application providing server (e.g., an application store). The wireless power transmission related application is a program for controlling wireless power transmission, and the electronic device 200 receives power wirelessly from the wireless power transmission apparatus 100 via the corresponding program, ) And a data communication link.

The memory 260 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or xD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The terminal 200 may operate in association with a web storage that performs the storage function of the memory 260 on the Internet.

The interface unit 270 serves as a path for communication with all external devices connected to the terminal 200. The interface unit 270 receives data from an external device or supplies power to each component in the terminal 200 or transmits data in the terminal 200 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 270.

The identification module is a chip for storing various information for authenticating the usage right of the terminal 200 and includes a user identification module (UIM), a subscriber identity module (SIM), a universal user authentication module A Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 200 through the port.

When the terminal 200 is connected to an external cradle, the interface unit may be a path through which the power from the cradle is supplied to the terminal 200, or various command signals input from the cradle by the user are transmitted to the terminal . Various command signals or power input from the cradle may be operated as signals for recognizing that the terminal is correctly mounted on the cradle.

The controller 280 typically controls the overall operation of the terminal. For example, voice communication, data communication, video communication, and the like. The control unit 280 may include a multimedia module 281 for multimedia playback. The multimedia module 281 may be implemented in the control unit 280 or may be implemented separately from the control unit 280. In addition, the controller 180 may be implemented as a separate module or a single module from the power receiving control unit 292 in the power supply unit 290 described with reference to FIG. 2.

The control unit 280 may perform pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The control unit 280 performs wired charging or wireless charging according to a user input or an internal input. Herein, the internal input is a signal indicating that the induced current generated in the secondary coil in the terminal is detected.

The operation of the control unit 280 to control the respective components when the above-described wireless charging is performed will be described in detail with reference to the operation state in FIG. As described above, the power reception control unit 292 in the power supply unit 290 may be included in the control unit 280, and operation by the power reception control unit 292 may be performed by the control unit 280 ) Can be understood as being performed.

The power supply unit 290 receives external power and internal power under the control of the controller 280 and supplies power required for operation of the respective components.

The power supply unit 290 may include a battery 299 for supplying power to each component of the terminal 200 and may include a charging unit 298 for wired or wirelessly charging the battery 299.

On the other hand, according to the embodiments disclosed herein, the memory 260 stores the content. The power supply unit 290 receives a wireless power signal from the wireless power transmitter. The controller 280 determines whether the terminal 200 is located in an area in which the terminal 200 can receive power wirelessly from the wireless power transmitter based on the wireless power signal.

The wireless communication unit 210 transmits the content to the wireless power transmitter 100 when the terminal 200 is located in an area where the terminal 200 can wirelessly receive power from the wireless power transmitter 100. .

In this case, the display unit 251 displays a menu for transmitting the content, and the user input unit 230 receives an input for selecting the menu. The wireless communication unit 210 transmits the content to the wireless power transmitter 100 when an input for selecting the menu is received.

Also, in this case, the wireless communication unit 210 receives the content transmission request from the wireless power transmitter 100 and transmits the content to the wireless power transmitter 100 in response to the transmission request.

Meanwhile, the wireless communication unit 210 stops transmitting the content when the terminal 200 is no longer located in an area in which the terminal 200 can wirelessly receive power from the wireless power transmitter 100.

Meanwhile, the content transmitted to the wireless power transmitter 100 is reproduced in the terminal 200 when it is determined that the terminal 200 is located in an area where the terminal 200 can receive power wirelessly from the wireless power transmitter 100. It can be content being. In addition, the content transmitted to the wireless power transmitter 100 is an event occurring in the terminal 200 while the terminal 200 is located in an area where the terminal 200 can receive power wirelessly from the wireless power transmitter 100. It may be a content corresponding to.

Although the present specification discloses a mobile terminal as an example of a device for receiving power wirelessly, the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, It will be readily apparent to those skilled in the art that the present invention may be applied to other embodiments.

FIG. 11 illustrates a concept of transmitting and receiving a packet between a wireless power transmitter and an electronic device through modulation and demodulation of a wireless power signal in wireless power transmission disclosed herein.

Referring to FIG. 11A, the wireless power signal formed by the power converter 111 forms a closed loop in a magnetic field or an electromagnetic field. Therefore, when the electronic device 200 modulates the wireless power signal while receiving the wireless power signal, the wireless power transmitter 100 may detect the modulated wireless power signal. The demodulation unit 113 may demodulate the sensed wireless power signal and decode the packet from the demodulated wireless power signal.

Meanwhile, a modulation method used for communication between the wireless power transmission apparatus 100 and the electronic device 200 may be amplitude modulation. As described above, in the amplitude modulation method, the modulation / demodulation unit 293 on the side of the electronic device 200 changes the amplitude of the wireless power signal 10a formed by the power conversion unit 111 so that the wireless power transmitter Modulation and demodulator 113 on the (100) side may be a backscatter modulation scheme for detecting the amplitude of the modulated wireless power signal 10b.

In detail, referring to FIG. 11B, the power reception control unit 292 of the electronic device 200 transmits the wireless power signal 10a received through the power reception unit 291 to the demodulation unit 293. Modulate by changing the load impedance in the circuit. The power reception control unit 292 modulates the wireless power signal 10a so that a packet including a power control message to be transmitted to the wireless power transmission apparatus 100 is included.

Thereafter, the power transmission control unit 112 of the wireless power transmitter 100 demodulates the modulated wireless power signal 10b through an envelope detection process, and decodes the detected signal 10c. It decodes into digital data 10d. The demodulation process detects that a current or voltage flowing through the power converter 111 is divided into two states, a HI state and an LO state, by the modulated wireless power signal. The electronic device 200 acquires a packet to be transmitted based on digital data classified according to FIG.

Hereinafter, a process of acquiring the power control message to be transmitted by the electronic device 200 from the digital data demodulated by the wireless power transmission apparatus 100 will be described.

12 illustrates a method of displaying data bits and bytes in which the wireless power transmitter 100 configures a power control message.

Referring to FIG. 12A, the power transmission controller 112 detects an encoded bit from the envelope detected signal using the clock signal CLK. The detected encoded bits are encoded according to the bit encoding method used in the modulation process on the electronic device 200 side. The bit encoding method may correspond to any one of non-return to zero (NRZ) and bi-phase encoding.

For example, the detected bits may be differential bi-phase (DBP) encoded. According to the DBP encoding, the power reception control unit 292 of the electronic device 200 has two state transitions for encoding data bit 1, and one state transition for encoding data bit 0. To have. That is, data bit 1 is encoded such that a transition between a HI state and a LO state occurs at a rising edge and a falling edge of the clock signal, and data bit 0 is HI at the rising edge of the clock signal. The transition between state and LO state may be encoded to occur.

On the other hand, the power transmission control unit 112 can obtain data in units of bytes by using a byte format that forms a packet from the bit stream detected according to the bit encoding method. For example, the detected bit string may be transmitted using an 11-bit asynchronous serial format as shown in FIG. 12C. That is, it may include a start bit indicating the start of the byte and a stop bit indicating the end, and may include data bits (b0 through b7) between the start bit and the end bit. In addition, a parity bit for checking the error of the data may be added. The byte-by-byte data constitutes a packet including a power control message.

FIG. 13 illustrates a packet including a power control message used in a wireless power transfer method in accordance with the embodiments disclosed herein.

The packet 500 may be configured to include a preamble 510, a header 520, a message 530 and a checksum 540.

The preamble 510 is used for the wireless power transmission apparatus 100 to perform synchronization with the received data and accurately detect the start bit of the header 520. [ The preamble 510 may be configured to repeat the same bits. For example, the preamble 510 may be configured such that the data bit 1 according to the DBP encoding is repeated 11 to 25 times.

The header 520 is used to indicate the type of the packet 500. The size and type of the message 530 may be determined based on the value indicated by the header 520. The header 520 is a value having a predetermined size and is located after the preamble 510. For example, the header 520 may be one byte in size.

The message (530) is configured to include data determined based on the header (520). The message 530 has a predetermined size according to the type.

The checksum 540 is used to detect an error that may occur in the header 520 and the message 530 during transmission of a power control message. The header 520 and the message 530 excluding the preamble 510 for synchronization and the checksum 540 for error checking may be called an instruction packet (command_packet).

Hereinafter, the operation states of the wireless power transmission apparatus 100 and the electronic apparatus 200 will be described.

FIG. 14 illustrates operating states of a wireless power transmission device 100 and an electronic device 200 in accordance with the embodiments disclosed herein.

Referring to FIG. 14, an operation state of the wireless power transmitter 100 and the electronic device 200 for wireless power transmission may include a selection state 610, a detection state 620, and an identification state. And a configuration state (Identification and Configuration State) 630 and a power transfer state (640).

In the selected state 610, it is detected whether or not objects exist within a range where the wireless power transmission apparatus 100 can wirelessly transmit power. In the detection state 620, the wireless power transmission apparatus 100 100 sends a detection signal to the sensed object, and the electronic device 200 sends a response to the detection signal.

Also, in the identifying and setting state 630, the wireless power transmission apparatus 100 identifies the selected electronic device 200 through the previous states and acquires setting information for power transmission. In the power transmission state 640, the wireless power transmitter 100 transmits power to the electronic device 200 while adjusting power transmitted in response to a control message received from the electronic device 200. .

15 is a block diagram illustrating a wireless power delivery system according to one embodiment disclosed herein.

As shown in FIG. 15, the wireless power transmitter 100 forms an area 700 that can wirelessly transfer power using a wireless power signal, and the electronic device in the area 700 that can wirelessly transfer power. The device 200 is detected. In addition, the wireless power transmitter 100 may wirelessly transmit power to the detected electronic device 200.

For example, the electronic device detected in the area 510 capable of transmitting power wirelessly may receive power wirelessly from the wireless power transmitter 100 (200A). On the other hand, the electronic device that is not detected in the area 510 capable of transmitting power wirelessly cannot receive power wirelessly from the wireless power transmitter 100 (200B).

In the first embodiment, the electronic device 200 may directly output the content (eg, video, image, text, or audio content) (200B). In addition, when the electronic device 200 enters an area 700 capable of transmitting power wirelessly of the wireless power transmitter 100, the electronic device 200 may be detected by the wireless power transmitter 100 (200A). In this case, the electronic device 200 may transmit the content being output to the wireless power transmitter 100 through the network 800.

While the electronic device 200 is detected in an area 700 that can continuously transmit power wirelessly (200A), the electronic device 200 continues to output the content being output via the wireless power transmission device (network 800). 100). If the electronic device 200 is no longer detected by the wireless power transmitter 100 by moving away from the area 700 capable of transmitting power wirelessly (200B), the electronic device 200 may transmit the wireless power transmitter. The transmission of the content to 100 may be stopped.

In the second embodiment, the electronic device 200 may enter the area 700 through which power can be transmitted wirelessly and be detected by the wireless power transmitter 100 (200A). In this case, when an event (eg, a call call reception event or a message call reception event, etc.) occurs in the electronic device 200, the electronic device 200 transmits the content corresponding to the event through the network 800. It may be transmitted to the wireless power transmitter 100.

In the third embodiment, the electronic device 200 may enter the area 700 through which power can be transmitted wirelessly and be detected by the wireless power transmitter 100 (200A). In this case, when the electronic device 200 receives a request for transmission of content from the wireless power transmitter 100, the electronic device 200 transmits the content corresponding to the request for transmission through the network 800. 100).

Meanwhile, the wireless power transmitter 100 receives content from the electronic device 200 detected in the area 700 capable of transmitting power wirelessly. In addition, the wireless power transmitter 100 may store the received content.

In addition, the wireless power transmitter 100 may transmit the stored content to the external output device 300 or the external storage device 400 through the network 800. Here, the external output device 300 and the external storage device 400 may be devices that are not detected in the area 700 that can wirelessly transfer power by the wireless power transmitter 100.

When the external output device 300 receives the content from the wireless power transmitter 100 through the network 800, the external output device 300 may store the received content and output the stored content.

On the other hand, when the external storage device 400 receives the content from the wireless power transmitter 100 via the network 800, the external storage device 400 stores the received content, and the wireless power transmitter 100 Under the control of the external output device 300 may output the content stored in the external storage device 400.

In addition, when the electronic device 200 is no longer detected in the area 700 capable of transferring power wirelessly (200B), the wireless power transmitter 100 receives the stored content of the electronic device 200 from the electronic device 200. The transmission to the external output device 300 or the external storage device 400 may be stopped and the stored content may be deleted.

Here, the external output device 300 is a home appliance such as a TV, a PC, an electronic picture frame, an alarm clock, an audio, a refrigerator, a washing machine, a lighting, an electronic device such as an automobile, and the like via the wireless power transmitter 100. It can be any electronic device capable of processing the received data. In addition, the external storage device 400 may be any storage device capable of receiving content from the wireless power transmitter 100 such as a PC or a network attached storage (NAS).

16 is a flowchart illustrating a content sharing process of a wireless power delivery system according to embodiments disclosed herein.

The wireless power transmitter 100 forms an area capable of wirelessly transmitting power using a wireless power signal, and detects the electronic device 200 in an area capable of wirelessly transmitting power. The wireless power transmitter 100 and the electronic device 200 perform a process for transmitting and receiving power wirelessly (S112 to S118).

More specifically, the wireless power transmitter 100 transmits a signal for detecting the electronic device to the electronic device 200 (S112), and the electronic device 200 modulates and transmits the received signal to the wireless power transmitter. Respond to 100 (S114). The electronic device 200 transmits at least one of identification information and setting information of the electronic device 200 to the wireless power transmitter 100 (S116), and the wireless power transmitter 100 transmits the electronic device 200. In step S118, power is transmitted wirelessly.

The wireless power transmitter 100 may detect the electronic device 200 in an area capable of wirelessly transmitting power based on at least one of the response of step 114 or the identification information and the setting information of step 116. In addition, the wireless power transmitter 100 may establish a connection for transmitting and receiving content with the electronic device 100 based on at least one of identification information and setting information of the electronic device 200. The identification information of the electronic device 200 may be obtained in operation 116, may be obtained through a search of a peripheral electronic device, or may be obtained from information about the electronic device 200 stored in advance.

The wireless power transmitter 100 may request the electronic device 200 to transmit the content (S122), and the electronic device 200 may transmit the content to the wireless power transmitter 100 (S124).

In the first embodiment, the content transmitted from the electronic device 200 to the wireless power transmitter 100 is detected in an area in which the electronic device 200 can wirelessly transfer power of the wireless power transmitter 100. This may be content being played on the electronic device 200 at a time point. Here, the electronic device 200 may play content stored in the memory 160 or receive content from a server connected through a network.

In this case, the content may include content data such as a video or audio file and reproduction information of the content data at a point of time detected in an area where the electronic device 200 may wirelessly transfer power of the wireless power transmitter 100. Can be. That is, the electronic device 200 generates the reproduction information (eg, bookmark information) of the content data at a time when the electronic device 200 is detected in an area in which the electronic device 200 can wirelessly transfer power of the wireless power transmitter 100. The generated reproduction information can be transmitted to the wireless power transmitter 100 together with the content data.

In the second embodiment, the content transmitted from the electronic device 200 to the wireless power transmitter 100 is detected in an area in which the electronic device 200 can wirelessly transfer power of the wireless power transmitter 100. May be content corresponding to an event generated in the electronic device 200. For example, the event may be a call call incoming event or a message call incoming event.

In a third embodiment, the content transmitted from the electronic device 200 to the wireless power transmitter 100 is detected in an area in which the electronic device 200 can wirelessly transfer power of the wireless power transmitter 100. While the content is requested to be transmitted from the external output device 300. Here, the electronic device 200 may receive a transmission request of the external output device 300 from the wireless power transmitter 100 and transmit content corresponding to the transmission request to the wireless power transmitter 100.

The wireless power transmitter 100 may store content received from the electronic device 200 (S130).

In addition, the wireless power transmitter 100 may transmit the stored content to the external output device 300 (S142) or transmit the stored content to the external storage device 400 (S144). In this case, the wireless power transmitter 100 may transmit the stored content to the external output device 300 using a streaming method. Therefore, the memory 150 of the wireless power transmitter 100 may perform a buffer function.

When the content transmitted from the electronic device 200 to the wireless power transmitter 100 includes an output signal generated according to the reproduction of the content data, the external output device 300 receives from the wireless power transmitter 100. Can output an output signal.

Alternatively, when the content transmitted from the electronic device 200 to the wireless power transmitter 100 includes content data and reproduction information of the content data, the wireless power transmitter 100 reproduces the content data based on the reproduction information. As such, an output signal (at least one of an image signal and an audio signal) of content data may be generated, and the external output device 300 may output an output signal received from the wireless power transmitter 100. In this case, the wireless power transmitter 100 may include a decoder for playing content.

Alternatively, when the content transmitted from the electronic device 200 to the wireless power transmitter 100 includes content data and reproduction information of the content data, the external output device 300 reproduces the content data based on the reproduction information. An output signal of the content data can be generated, and the generated output signal can be output. In this case, the external output device 300 may include a decoder for playing the content.

Alternatively, when the content transmitted from the electronic device 200 to the wireless power transmitter 100 includes content data and reproduction information of the content data, the external storage device 400 receives the content data, and the external output device ( 300 may receive playback information. The external output device 300 may reproduce the content data stored in the external storage device 400 based on the reproduction information to generate an output signal of the content data, and output the generated output signal. In this case, the external output device 300 may include a decoder (decoder) for playing the content.

Meanwhile, while the wireless power transmitter 100 receives content from the electronic device 200, the wireless power transmitter 100 continuously monitors whether the electronic device 200 is detected in an area in which the wireless power transmitter 100 can wirelessly transmit power. can do. If the electronic device 200 is no longer detected in an area in which the wireless power transmitter 100 can wirelessly transmit power, the wireless power transmitter 100 receives content from the electronic device 200 and outputs an external output. The transmission of the content to the device 300 or the external storage device 400 may be stopped. In this case, the wireless power transmitter 100 may delete the content (S160).

17 is a view illustrating an operation control process of the wireless power transmitter 100 according to the embodiments disclosed herein.

First, the power transmitter 110 forms an area in which power can be wirelessly transmitted using a wireless power signal (S112).

In addition, the power transmission unit 110 monitors whether the electronic device is detected in an area capable of wirelessly transmitting power (S114, S116, and S118). For example, the power transmission unit 110 may receive a response to the wireless power signal from the detected electronic device (S114), and receive at least one of identification information and setting information (S116). In addition, the power transmission unit 110 may wirelessly transmit power to the detected electronic device (S118).

If the electronic device is detected, the communication unit 130 receives the content from the detected electronic device (S120). To this end, the communication unit 130 may establish a connection with the detected electronic device.

In the first embodiment, the communication unit 130 may receive content that is output from the detected electronic device at the time when the electronic device is detected.

In a second embodiment, the communication unit 130 may receive content corresponding to an event generated in the electronic device while the electronic device is detected.

In the third embodiment, the communication unit 130 may request a list of contents from the detected electronic device to receive the requested list, and may receive the content selected by the user from the received list. In this case, the display unit 141 may display a menu for selecting content to be received, and the input unit may receive an input for selecting content to be received. The communication unit 130 may receive the selected content by transmitting a request for transmission of the selected content to the detected electronic device according to the input.

Alternatively, the communication unit 130 may request and receive a list of content from the detected electronic device and transmit the list of received content to another electronic device. In addition, the communication unit 130 may receive a request for transmission of the content selected from the list of content from the other electronic device and transmit the received request to the detected electronic device. The communication unit 130 may receive the selected content according to the transmission request from the detected electronic device.

The controller 180 stores the content received from the detected electronic device in the memory 150 (S130). According to the streaming method, the controller 180 may temporarily store the received content. That is, content stored in the memory 150 may be deleted from the memory 150 when it is transmitted to another electronic device.

The controller 180 controls the communicator 130 to transmit the content stored in the memory 150 to an electronic device which is not detected in an area capable of wirelessly transmitting power (S140). The display unit 141 displays a menu for transmitting the content received from the detected electronic device to another electronic device, and the input unit receives an input for selecting the displayed menu. When the displayed menu is selected, the display unit 141 receives an input for selecting an electronic device to transmit the content received from the detected electronic device. The communication unit 130 transmits the content stored in the memory 150 to the electronic device selected according to the input.

The power transmission unit 110 monitors whether the electronic device continues to be detected in an area capable of wirelessly transmitting power (S150). If the electronic device is no longer detected in an area capable of transferring power wirelessly, the controller 180 stops receiving content from the detected electronic device and transmitting content to the undetected electronic device. In addition, the controller 180 deletes content from the memory 150 (S160).

18 is a view illustrating an operation control process of the electronic device 200 according to the embodiments disclosed herein.

The power supply unit 290 receives a wireless power signal (S210). The power supply unit 290 receives a signal for detecting an electronic device or a signal for transmitting power wirelessly from the wireless power transmitter 100.

The controller 280 determines whether the electronic device 200 is located in an area in which the electronic device 200 can receive power wirelessly from the wireless power transmitter 100 based on the wireless power signal (S220). For example, when the controller 280 receives a signal for detecting the electronic device from the wireless power transmitter 100, the controller 280 measures the strength of the received signal, and when the measured intensity is greater than or equal to the threshold level, the electronic device. It may be determined that the 200 is located in an area capable of wirelessly receiving power from the wireless power transmitter 100. Alternatively, the electronic device 200 may be located in an area in which the electronic device 200 may receive power wirelessly from the wireless power transmitter 100 even when a signal for wirelessly transmitting power is received from the wireless power transmitter 100. You can judge.

When it is determined that the electronic device 200 is located in an area in which the electronic device 200 may receive power wirelessly from the wireless power transmitter 100, the wireless communication unit 210 stores the content stored in the memory 260. 100) (S230).

Meanwhile, the controller 280 may continue to receive power from the wireless power transmitter 100 wirelessly while the wireless communication unit 210 transmits content to the wireless power transmitter 100. It may be determined whether it is located in the area (S240). If it is determined that the electronic device 200 is no longer located in an area capable of wirelessly receiving power from the wireless power transmitter 100, transmission of the content may be stopped (S250).

19 is a conceptual diagram illustrating a user interface provided by the wireless power transmitter 100 or the electronic device 200 according to the embodiments disclosed herein.

Referring to FIG. 19A, when the wireless power transmitter 100 detects the electronic device 200 in an area in which power can be wirelessly transmitted, the wireless power transmitter 100 notifies the detection of the electronic device 200 and transmits content. The menu 902 for selecting may be displayed on the screen. Alternatively, when it is determined that the electronic device 200 is located in an area in which the electronic device 200 may receive power wirelessly from the wireless power transmitter 100, the electronic device 200 detects the detection of the wireless power transmitter 100. A menu 902 for notifying and selecting whether to transmit content may be displayed on the screen.

Referring to FIG. 19B, when a confirmation input is received from the menu 902 of FIG. 19A, the wireless power transmitter 100 or the electronic device 200 may include a list of contents stored in the electronic device 200. A menu 904 for selecting content to be transmitted together may be displayed on the screen.

Referring to FIG. 19C, when an input for selecting content is received from the menu 904 of FIG. 19B, the wireless power transmitter 100 or the electronic device 200 may list the external device to transmit the selected content. In addition, a menu 906 for selecting an external device may be displayed on the screen. If only one external device capable of transmitting the selected content is found, the wireless power transmitter 100 and the electronic device 200 may immediately start the transmission and reception of the content without displaying the menu 904.

Referring to FIG. 19D, when an input for selecting an external device is received from the menu 906 of FIG. 19C, the electronic device 200 transmits the selected content to the wireless power transmitter 100, and wirelessly. The power transmitter 100 transmits the content received from the electronic device 200 to the selected external device. In addition, the wireless power transmitter 100 or the electronic device 200 may display an indicator 908 on the screen indicating that the selected content is being transmitted to the selected external device.

20A to 20C are conceptual diagrams of a wireless power delivery system according to embodiments disclosed herein.

20A to 20C, the electronic device 200 may output content and may wirelessly receive power from the wireless power transmitter 100. For example, while the electronic device 200 is outputting content, the user may wirelessly power the electronic device 200 by using an induction method (710) in which the wireless power transmitter 100 may wirelessly transmit power. The electronic device 200 may be provided with an area capable of transmitting power, 720; an area capable of transmitting power wirelessly using a resonance method, and may be configured to supply power to the electronic device 200 or charge the battery. Alternatively, while the user places the electronic device 200 in the areas 710 and 720 where the wireless power transmitter 100 may wirelessly transmit power, the user may supply power to the electronic device 200 or charge the battery. The electronic device 200 may output content. In this case, when the electronic device 200 is positioned in an area 710 or 720 in which the wireless power transmitter 100 may wirelessly transmit power, the user may not be able to watch or view content output from the electronic device 200. You may feel uncomfortable.

For example, when the wireless power transmitter 100 may wirelessly transmit power to the electronic device 200 by using an induction method, a user may select an area (eg, an upper surface of the wireless power transmitter 100). For example, by placing the electronic device 200 at 710, the electronic device 200 may receive power from the wireless power transmitter 100. Alternatively, when the wireless power transmitter 100 may wirelessly transmit power to the electronic device 200 by using a resonance method, the user may have a radial area (for example, the wireless power transmitter 100). By positioning the electronic device 200 at 720, the electronic device 200 may receive power from the wireless power transmitter 100.

Meanwhile, the external output device 300 located outside the area 710 or 720 through which the wireless power transmitter 100 may wirelessly transmit power may output content using various applications. If the electronic device 200 may wirelessly receive power from the wireless power transmitter 100, the user may output the content output from the electronic device 200 from the external output device 300. By using the output device 300, it is possible to continuously watch the content.

Referring to FIG. 20A, the electronic device 200 may reproduce and output a video outside an area 710 or 720 that may transmit power wirelessly of the wireless power transmitter 100. If the user places the electronic device 200 in an area 710 or 720 that can transmit power wirelessly of the wireless power transmitter 100 during the output of the video, the electronic device 200 may be controlled by the wireless power transmitter 100. ) Is detected, and the wireless power transmitter 100 may receive a video output from the electronic device 200. The wireless power transmitter 100 stores the received video, and transmits the received video to the external output device 300 that is not detected in the area 710 or 720 that can wirelessly transfer power of the wireless power transmitter 100. The external output device 300 may output the received video from the portion corresponding to the detected time point.

The user may again move the electronic device 200 out of an area 710 or 720 that may transmit power wirelessly of the wireless power transmitter 100. In this case, the electronic device 200 may stop transmitting the video to the wireless power transmitter 100. While the reception of the content from the electronic device 200 is stopped, the wireless power transmitter 100 may stop transmitting the content to the external output device 300. The wireless power transmitter 100 may delete the content received from the electronic device 200 and stored. The electronic device 200 may play back the video from the portion corresponding to the point in time at which the transmission of the video is stopped and output the video.

Therefore, the wireless power transmitter 100 wirelessly supplies power to the electronic device 200 and simultaneously receives the content being output from the electronic device 200 and transmits the received content to the external output device 300. By allowing the external output device 300 to output the content, a seamless content viewing environment is provided to the user.

Referring to FIG. 20B, the electronic device 200 may output content corresponding to an event that occurs outside an area 710 or 720 that can transmit power wirelessly of the wireless power transmitter 100. On the other hand, when the user places the electronic device 200 in the area 710 or 720 that can transmit power wirelessly of the wireless power transmitter 100, the electronic device 200 by the wireless power transmitter 100 Is detected, and the wireless power transmitter 100 transmits content corresponding to an event generated while the electronic device 200 is located in an area 710 or 720 where the wireless power transmitter 100 can wirelessly transmit power. Can be received. The wireless power transmitter 100 stores the received content and transmits the received content to the external output device 300 that is not detected in the area 710 or 720 that can wirelessly transfer power of the wireless power transmitter 100. The external output device 300 may output the received content.

Specifically, when a call call reception event occurs in the electronic device 200 located in an area 710 or 720 capable of wirelessly transmitting power of the wireless power transmitter 100, the electronic device 200 may generate an event. Notifies the wireless power transmitter 100. The wireless power transmitter 100 transmits an occurrence of an event to the external output device 300, and provides an interface to process the generated event in the external output device 300. For example, the external output device 300 displays a menu for call connection and transmits a call connection command to the electronic device 200 through the wireless power transmitter 100 when the menu is selected. The call is connected, and receives and outputs a voice signal received from the counterpart terminal from the electronic device 200 through the wireless power transmitter 100, and detects a user's voice to transmit the voice signal to the wireless power transmitter 100. Through the transmission to the electronic device 200 to be transmitted to the other terminal.

Accordingly, the user may check information about an event occurring in the electronic device 200 by using the external output device 300 in place of the electronic device 200 while the electronic device 200 is being charged.

Meanwhile, the wireless power transmitter 100 may manage a plurality of electronic devices in association with information about a user. In particular, the memory 150 may maintain an up-to-date data storage state of the electronic device by distributing the available area according to a frequency of use of the user and performing a periodic backup operation. Therefore, the wireless power transmitter 100 may protect personal privacy without exposing personal information among a plurality of users.

If the user information provides such a service to the electronic device 200 that is not registered in the wireless power transmitter 100, the electronic device 200 may wirelessly transmit information about the electronic device 200 and the user. It may transmit to the power transmitter 100. Such personal information may be transferred from the wireless power transmitter 100 when the charging of the electronic device 200 is completed or when the electronic device 200 is out of an area in which the electronic device 200 may wirelessly transmit power, or when a predetermined time elapses according to a setting. Can be deleted.

The wireless power transmitter 100 or the external output device 300 may perform a speaker phone function provided by the electronic device 200. Through such a service, a user can freely talk without being bound by space even during wireless charging. Or a message service can be provided. In addition, even if the wireless power transmitter 100 is spaced apart from the user's activity space, the external output device 300 may process various events occurring in the electronic device 200, and thus the user may be concerned about electromagnetic field exposure. There is an advantage to escape.

Referring to FIG. 20C, the electronic device 200 may output content selected by a user outside an area 710 or 720 that can wirelessly transfer power of the wireless power transmitter 100. On the other hand, when the user places the electronic device 200 in the area 710 or 720 that can transmit power wirelessly of the wireless power transmitter 100, the electronic device 200 by the wireless power transmitter 100 Is detected and the wireless power transmitter 100 is located in an area 710 or 720 where the electronic device 200 can wirelessly transfer power of the wireless power transmitter 100. Receives a content transmission request, and transmits the received transmission request to the electronic device (200). The electronic device 200 transmits the requested content to the wireless power transmitter 100. The wireless power transmitter 100 stores the received content and transmits the received content to the external output device 300 that is not detected in the area 710 or 720 that can wirelessly transfer power of the wireless power transmitter 100. The external output device 300 may output the received content.

In detail, the electronic device 200 located in an area 710 or 720 capable of wirelessly transmitting power of the wireless power transmitter 100 may provide the wireless power transmitter 100 with information about stored content. . Therefore, the wireless power transmitter 100 may transmit information about the stored content to the external output device 300. The external output device 300 transmits a request for transmission of the content selected by the user to the electronic device 200 through the wireless power transmitter 100 based on the stored information about the content. The electronic device 200 transmits the requested content to the external output device 300 through the wireless power transmitter 100.

Accordingly, the electronic device 200 may transmit the content corresponding to the transmission request of the external output device 300 to the external output device 300 via the wireless power transmitter 100.

Therefore, when the user goes out without carrying the electronic device 200 without recognizing the existence of the electronic device 200 while the electronic device 200 is being charged, the user may designate an external output device such as a car, an office PC, etc. The convenience of life may be provided by receiving the content stored in the electronic device 200 using the 300. The user can change the settings of the electronic device 200 using a personal car (navigation, etc.) or an office PC even when the electronic device 200 is not carried, and tablets all the information generated from the electronic device 200. It can be checked with another terminal of the user such as a PC or a mobile terminal of another user.

The method described above can be implemented in a recording medium that can be read by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to the hardware implementation, the methods described so far are application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and processors ( It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. It may be implemented in the controller 120 of (100), or the methods may be implemented by the controller 281 of the mobile terminal 200 or the multimedia device 200.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code may be stored in the memory 260 and executed by the controller 280.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, May be modified, modified, or improved.

100: wireless power transmitter 200: electronics
300: external output device 400: external storage device

Claims (20)

A power transmission unit which forms a region in which power can be wirelessly transmitted using a wireless power signal, and detects a first electronic device in the region in which power can be wirelessly transmitted;
A communication unit receiving content from the first electronic device;
A memory storing content received from the first electronic device; And
And a control unit for controlling the communication unit to transmit the content stored in the memory to a second electronic device that is not detected in the area capable of transmitting power wirelessly. The apparatus of claim 1,
And deleting the content from the memory when the first electronic device is no longer detected in the area capable of transferring power wirelessly. The method of claim 1, wherein the content is:
And a content data and reproduction information of the content data. The apparatus of claim 3,
And reproducing the content data based on the reproduction information, and controlling the communication unit to transmit an output signal generated according to the reproduction to the second electronic device. The apparatus of claim 3,
And the communication unit controls to transmit the content data to a third electronic device that is not detected in an area capable of transmitting the reproduction information to the second electronic device and delivering power to the radio. The method of claim 1, wherein the content is:
And a content being reproduced in the first electronic device at a time when the first electronic device is detected in an area in which power can be wirelessly transmitted. The method of claim 1, wherein the content is:
And a content corresponding to an event occurring in the first electronic device while the first electronic device is detected in an area capable of transferring power wirelessly. The method of claim 1, wherein the communication unit,
And transmitting a request to transmit the content to the first electronic device, and receiving the content from the first electronic device according to the request for transmission. The method of claim 1, wherein the wireless power signal,
A signal for detecting the first electronic device,
The power transmission unit,
And receiving a response to the wireless power signal from the first electronic device, and detecting the first electronic device in an area capable of transferring power wirelessly based on the response. According to claim 1, The power transmission unit,
Receiving at least one of identification information and setting information of the first electronic device,
The control unit,
And the communication unit controls to establish a connection with the first electronic device based on at least one of the identification information and the setting information. According to claim 1, The power transmission unit,
Wirelessly transmits power to the first electronic device,
The control unit,
And controlling the communication unit to transmit content stored in the memory to the second electronic device while transmitting power wirelessly to the first electronic device. The display apparatus of claim 1, further comprising: a display configured to display a menu for transmitting the content; And
And an input unit configured to receive an input for selecting the menu.
The control unit,
And receiving, by the communication unit, the content from the first electronic device and transmitting the content stored in the memory to the second electronic device when receiving an input for selecting the menu. The display apparatus of claim 1, further comprising: a display configured to display a list of a plurality of electronic devices capable of receiving the content; And
And an input unit configured to receive an input for selecting the second electronic device from the list. The apparatus of claim 1,
And the communication unit controls to transmit the content stored in the memory to the second electronic apparatus by using a streaming method. In an electronic device that receives power wirelessly from a wireless power transmitter,
A memory for storing content;
A power receiver configured to receive a wireless power signal from the wireless power transmitter;
A controller to determine whether the electronic device is located in an area in which the electronic device can wirelessly receive power from the wireless power transmitter based on the wireless power signal; And
And a communication unit for transmitting the content to the wireless power transmitter when the electronic device is located in an area capable of wirelessly receiving power from the wireless power transmitter. The method of claim 15, wherein the communication unit,
And stop transmitting the content when the electronic device is no longer located in an area capable of wirelessly receiving power from the wireless power transmitter. The method of claim 15, wherein the content transmitted to the wireless power transmitter,
And the content being reproduced by the electronic device at the time when the electronic device is determined to be located in an area capable of receiving power wirelessly from the wireless power transmitter. The method of claim 15, wherein the content transmitted to the wireless power transmitter,
And the electronic device is a content corresponding to an event occurring in the electronic device while the electronic device is located in an area capable of receiving power wirelessly from the wireless power transmitter. The method of claim 15, wherein the communication unit,
Receiving the request for transmission of the content from the wireless power transmitter, and transmitting the content to the wireless power transmitter in response to the request for transmission. The display apparatus of claim 15, further comprising: a display configured to display a menu for transmitting the content; And
And an input unit configured to receive an input for selecting the menu.
The control unit,
And the communication unit controls to transmit the content to the wireless power transmitter when an input for selecting the menu is received.

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