KR101937480B1 - Mobile terminal - Google Patents

Abstract

 A mobile terminal according to the present invention extracts a sensing factor of wireless charging efficiency for a wireless charging signal at a predetermined node, determines an alignment state of the terminal based on the sensing factor, And can provide feedback reflecting the judgment result.

Description

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a wireless charging technology, and more particularly, to a technique capable of wirelessly charging a mobile terminal.

2. Description of the Related Art As a mobile terminal such as a notebook computer, a mobile phone, or a smart phone has diversified functions, a mobile terminal has a variety of functions such as photographing, video shooting, music or video file playback, And is implemented in the form of a multimedia player.

In order to support and enhance the functionality of such a mobile terminal, it may be considered to improve the structural and / or software portion of the terminal. Recently, a variety of terminals including a mobile terminal provide a complex and various functions, and the menu structure is also becoming complicated.

In particular, in recent years, there has been an explosion of interest and research on a technique for wirelessly charging a battery included in the mobile terminal.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mobile terminal capable of performing a guiding function for correcting an alignment of a mobile terminal with respect to a wireless charging means during wireless charging.

The technical objects to be achieved by the present invention are not limited to the technical matters mentioned above, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

According to an aspect of the present invention, there is provided a mobile terminal including: an output unit capable of generating an acoustic signal and a video signal vibration signal; battery; A wireless charging unit for receiving a wireless charging signal transmitted from the wireless charging unit to generate a charging voltage for charging the battery, a sensing factor of wireless charging efficiency for the wireless charging signal at a predetermined node, A power receiving unit for extracting a power supply voltage; And a controller for determining an alignment state of the wireless charging means based on the extracted charging efficiency sensing factor and providing feedback reflecting the determination result through the output unit.

According to an aspect of the present invention, there is provided a mobile terminal charging method including receiving a wireless charging signal transmitted from a wireless charging unit; Generating a charging voltage for charging the battery based on the received wireless charging signal; Extracting a charging efficiency sensing factor for the wireless charging signal at a predetermined node; And determining an alignment state of the wireless charging means based on the extracted charging efficiency sensing factor, and providing feedback reflecting the determination result using at least one of an acoustic signal, an image signal, and a vibration signal . ≪ / RTI >

The method for charging a mobile terminal according to an embodiment of the present invention can be implemented by executing a computer program for implementing the mobile terminal driving method stored in a computer readable recording medium.

The mobile terminal according to the present invention can provide a guiding function for correcting the alignment of the mobile terminal with respect to the wireless charging means during wireless charging.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2 shows that the mobile terminal according to the present invention is charged by a magnetic induction type wireless charging device.
FIG. 3 shows that mobile terminals according to an embodiment of the present invention can wirelessly charge a battery through a wireless charging device.
FIG. 4 illustrates a process of charging a mobile terminal according to the present invention by a magnetic charging type wireless charging device.
5 is a flowchart illustrating an example of a method for charging a mobile terminal according to the present invention.
6 shows an example of a configuration of a power receiving unit of a mobile terminal according to the present invention.
7 is a flowchart showing another example of the mobile terminal charging method according to the present invention.
FIG. 8 shows an example in which the output voltage of the rectifying circuit is extracted by the charging efficiency sensing factor according to the mobile terminal charging method shown in FIG.
FIG. 9 shows an example of feedback provided in the mobile terminal according to the mobile terminal charging method shown in FIG.
10 is a flowchart showing another example of a mobile terminal charging method according to the present invention.
FIG. 11 shows an example in which the frequency of the output signal of the resonant circuit including the charging coil is extracted by the charging efficiency sensing factor according to the mobile terminal charging method shown in FIG.

The foregoing objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals designate like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, have. However, the scope of the present invention is not limited thereto.

1 is a block diagram of a mobile terminal 100 according to an embodiment of the present invention. 1, the mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A storage unit 160, an interface unit 170, a control unit 180, and a power source unit 190, and the like. 1 are not essential, the mobile terminal 100 may have more or less components than those shown in FIG.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. 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 112.

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

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) Only Digital Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems that provide broadcast signals as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the storage unit 160.

The mobile communication module 112 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 in response to a voice call signal, a video call call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 113 refers to a module for wireless Internet access, and the wireless Internet module 113 can be embedded in the mobile terminal 100 or externally. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), LTE (Long Term Evolution) .

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. The location information module 115 may obtain location information using a global navigation satellite system (GNSS). Here, the Global Positioning System (GNSS) is a term used to describe the radionavigation satellite systems in which certain types of radionavigation receivers orbiting the Earth are transmitting reference signals that can determine their position near the surface or ground surface . The Global Positioning System (GNSS) includes Global Positioning System (GPS) in the United States, Galileo in Europe, GLONASS (Global Orbiting Navigational Satelite System) in Russia, COMPASS in China and Japan QZSS (Quasi-Zenith Satellite System), which is operated by the Ministry of Land, Infrastructure and Transport.

As a representative example of the GNSS, the location information module 115 may be a Global Position System (GPS) module. The GPS module calculates information on a distance (distance) from three or more satellites to a point (object), information on a time when the distance information is measured, and then applies a trigonometric method to the calculated distance information, Dimensional position information according to latitude, longitude, and altitude with respect to a point (object) in the three-dimensional space. Further, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is also used. The GPS module continuously calculates the current position in real time, and calculates velocity information using the current position.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the storage unit 160 or transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 122 receives an external sound signal through 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 can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the movement of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, And senses the current state of the terminal 100 to generate a sensing signal for controlling the operation of the mobile terminal 100. The sensing signal may be transmitted to the controller 180 so that the controller 180 may perform a specific function.

The sensing unit 140 may include a touch sensor for sensing whether the user touches the touch panel, a vibration sensor for sensing vibration generated based on the touch of the user, a gyro sensing rotation of the mobile phone 100, A sensor, an acceleration sensor, a geomagnetic sensor, or the like. However, the scope of the present invention is not limited thereto.

For example, when the mobile terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it may be responsible for a sensing function related to whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor.

The output unit 150 may include a display unit 151, an acoustic output unit 152, an alarm unit 153, and a haptic module 154, for example, for generating an output related to visual, auditory, have.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display 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 typical example of the transparent display is a transparent LCD or the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions 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 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') 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 unit 151 or a capacitance generated in a specific portion of the display unit 151 into 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 transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

A proximity sensor may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen that is wrapped by 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 type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor.

And to detect the proximity of the cursor with the change of the electric field along the proximity of the cursor when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

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 unit 152 may output audio data received from the wireless communication unit 110 or stored in the storage unit 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 outputs an acoustic signal related to a function (e.g., a call signal reception sound, a message reception sound, and the like) performed by the mobile terminal 100. The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like. Also, the sound output unit 152 may output sound through the earphone jack 116. The user can connect the earphone to the earphone jack 116 to hear the sound output.

The alarm unit 153 may output a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the 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 also be output through the display unit 151 or the audio output unit 152.

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of the vibration generated by the hit module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may be configured to perform various functions such as an effect of stimulation by a pin arrangement vertically moving with respect to a contact skin surface, an effect of stimulation by air spraying force or suction force through a jet opening or a suction opening, A variety of tactile effects such as an effect of stimulation through contact of an electrode, an effect of stimulation by an electrostatic force, and an effect of reproducing a cold sensation using a heat absorbing or exothermic element can be generated.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to feel the tactile effect through the muscles of the user's finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The storage unit 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (e.g., a phone book, a message, a still image, The storage unit 160 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The storage unit 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory) (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 mobile terminal 100 may operate in association with a web storage that performs a storage function of the storage unit 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or receives power from the external device to transfer the data to each component in the mobile terminal 100 or to transmit data in the mobile terminal 100 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 170.

The interface unit 170 may include a card slot on which the card type user identification module can be mounted. Then, the user identification module may be connected to the mobile terminal 100 through the card slot. At this time, a plurality of user identification modules may be connected to the interface unit 170.

When the mobile terminal 100 is connected to an external cradle, the interface unit 170 may be a path through which power from the cradle is supplied to the mobile terminal 100, or various commands A signal may be a path through which the signal is transmitted to the mobile terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The control unit 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

Under the control of the control unit 180, the power supply unit 190 receives external power and internal power, and supplies power necessary for operation of the respective components. The power unit 190 may include a power receiver 200 and a battery 195. The power receiving unit 200 may receive a wireless charging signal according to a magnetic induction method or a magentic resonance method to generate a charging voltage for charging the battery 195. The structure and function of the power receiver 200 will be described in detail with reference to FIGS. 5 to 11. FIG.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing functions. In some cases, And may be implemented by the control unit 180.

According to a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that perform at least one function or operation. The software code may be implemented by a software application written in a suitable programming language. Also, the software codes may be stored in the storage unit 160 and executed by the control unit 180. [

2 shows that the mobile terminal 100 according to the present invention is charged by a magnetic induction type wireless charging device. Referring to FIG. 2, the mobile terminal 100 is located on a wireless charging device 200 that transmits a wireless charging signal, and can charge the battery 195 based on the magnetic induction phenomenon according to the wireless charging signal.

FIG. 3 shows that the mobile terminals 100 according to the embodiment of the present invention can wirelessly charge the battery 195 through the wireless charging device 300. FIG. 3, various mobile terminals 100 are disposed on the wireless charging device 300 with the charging function activated, thereby receiving power from the wireless charging device 300 according to the magnetic induction method, And may charge the battery 195 based on the received power.

FIG. 4 shows a process of charging the mobile terminal 100 according to the present invention by a wireless charging device of a magnetic resonance type. When power is applied to the wireless charging device 200, the wireless charging device 200 generates a wireless charging signal, and the generated wireless charging signal is transmitted to the mobile terminal 100 through the charging coil. Then, the mobile terminal 100 may receive the wireless charging signal through the charging coil 192 to charge the battery 193. [

In the foregoing, the schematic configuration of the mobile terminal 100 according to the present invention and the wireless charging function have been described with reference to FIG. 1 to FIG. Hereinafter, the wireless charging guiding function of the mobile terminal 100 according to the present invention will be described in more detail with reference to FIG. 5 to FIG.

5 is a flowchart illustrating an example of a method for charging a mobile terminal according to the present invention. Hereinafter, the charging method will be described with reference to necessary drawings.

A wireless charging signal is received from the wireless charging means through the power receiving unit 200 (S100). As described above, the wireless charging means can transmit the wireless charging signal according to a magnetic induction method or a self resonance method. When the wireless charging signal is received, the power receiving unit 200 generates a wireless charging voltage for charging the battery 195 based on the received wireless charging signal (S110).

The power receiving unit 200 calculates a wireless charging efficiency for the wireless charging signal at a predetermined node in the power receiving unit 200 in the process of generating the charging voltage from the received wireless charging signal And extracts a sensing factor of a wireless charging efficiency as a reference and provides the sensing factor to the controller 180 (S120). Here, the charging efficiency sensing factor serves as a basis for calculating the charging efficiency of the battery 195 with respect to the wireless charging signal, and may be a voltage level or a frequency sensed by the power receiving unit 200.

If the charging efficiency sensing factor is provided, the controller 180 may determine an alignment state of the mobile terminal 100 with respect to the wireless charging unit based on the charging efficiency sensing factor (S130). The bad state of the mobile terminal 100 means that the charging efficiency of the mobile terminal 100 is low and that the alignment state of the mobile terminal 100 is good means that the mobile terminal 100 is charged Which means that the efficiency is high.

Then, the controller 180 provides the feedback reflecting the alignment of the mobile terminal 100 through the output unit (S140). For example, if the alignment of the mobile terminal 100 is good, the mobile terminal 100 may provide a user interface through the display unit 151 that the wireless charging is proceeding as shown in FIG. The alignment of the mobile terminal 100 means that the charging efficiency is greater than the threshold value and the extracted charging efficiency sensing factor is greater than the threshold value.

However, if the alignment of the mobile terminal 100 is bad, the mobile terminal 100 may provide feedback for guiding the user to change the alignment of the mobile terminal 100 so that the charging efficiency of the mobile terminal 100 is higher, May be provided through the output unit 150. The feedback provided through the output unit 150 may include a voice message, a predetermined effect sound, a vibration, a text message, a moving picture indicating an example of correcting the alignment, and the like. However, the scope of the present invention is not limited thereto. If the alignment of the mobile terminal 100 is bad, it means that the charging efficiency is smaller than the threshold value and the extracted charging efficiency sensing factor is smaller than the threshold value.

6 shows an example of the configuration of the power receiver 200 of the mobile terminal 100 according to the present invention. The components of the power receiver 200 shown in FIG. 6 are not essential. Therefore, according to the embodiment of the present invention, the power pickup unit 210 may include components other than those shown, and may not include the components shown in the figures.

6, the power receiving unit 200 includes a resonant circuit 210 including a charging coil 212, a communication modulator 220, a rectifying circuit 230, a charging voltage generating circuit 240, a sensing unit 250, a first sensing unit 250, and a second sensing unit 250 '.

The resonance circuit 210 may receive the wireless charging signal received from the wireless charging means according to a magnetic induction method. The function and operation of the resonant circuit 210 are obvious to those skilled in the art, and a detailed description thereof will be omitted. Moreover, this dual resonant configuration is described in detail in the specification of the wireless charging standard value Qi.

The communication modulator 220 may modulate the primary cell current and / or the primary cell voltage based on the wireless charging signal transmitted from the wireless charging means. The structure, function, and operation of the communication modulator 220 are described in detail in the specification of the wireless charging standard value Qi, and a detailed description thereof will be omitted.

The rectifying circuit 217 can convert an AC signal based on a wireless charging signal received through the resonance circuit 210 into a DC signal and output the AC signal. The charging voltage generating circuit 240 generates a charging voltage based on the output voltage of the rectifying circuit 230 and applies the charging voltage to the battery 195 (S230).

The first sensing unit 250 senses the output voltage of the rectifying circuit 230 and provides the sensing voltage to the controller 180. Then, the controller 180 compares the sensed voltage with a predetermined voltage, determines the charging efficiency of the mobile terminal 100 based on the comparison result, and based on the determined charging efficiency, Can be determined. That is, the sensed voltage is a charging efficiency sensing factor as described above.

The second sensing unit 250 'senses the frequency of the output signal of the resonant circuit 210 and provides the sensed frequency to the controller 180. Then, the controller 180 compares the sensed frequency with a predetermined frequency, determines the charging efficiency of the mobile terminal 100 based on the comparison result, and based on the determined charging efficiency, It is possible to determine the alignment state. That is, the sensed frequency is the charge efficiency sensing factor as described above.

7 is a flowchart showing another example of the mobile terminal charging method according to the present invention. Hereinafter, the charging method will be described with reference to necessary drawings.

The rectifying circuit 230 converts the AC signal based on the wireless charging signal into a DC signal and outputs it (S200). Then, the sensing unit 250 extracts the output voltage of the rectifying circuit 230 as a charging efficiency sensing factor (S210).

Then, the control unit 180 compares the output voltage of the rectifier circuit 230 with the reference voltage to determine the alignment state of the mobile terminal 100 (S220). If the alignment state of the mobile terminal 100 is good, the controller 180 displays the wireless charging start user interface on the display unit 151 (S240).

However, if the alignment state of the mobile terminal 100 is bad, the controller 180 provides the feedback for changing the alignment of the mobile terminal 100 through the output unit 150 (S250). Such feedback may include an acoustic signal, a video signal, a vibration, and the like for driving the mobile terminal 100 to move to a position having an optimal charging efficiency.

FIG. 8 shows an example in which the output voltage of the rectifier circuit 230 is extracted by the charging efficiency sensing factor according to the mobile terminal charging method shown in FIG.

Referring to FIG. 8, the rectifier circuit 230 includes a plurality of diodes D1 to D4 and a capacitor C for rectifying an AC signal into a DC signal. The sensing unit 250 may be implemented as a resistor R for sensing the output voltage Vsen of the rectifying circuit 230. The sensed output voltage Vsen is provided to the controller 180, and the controller 180 can provide a predetermined feedback to the user based on the sensed output voltage Vsen.

8, not only the output terminal of the rectifier circuit 230 but also the input terminal of the rectifier circuit 230 and the input terminal of the battery 195 Lt; / RTI > may be the voltage at a particular node between terminals.

FIG. 9 shows an example of feedback provided by the mobile terminal 100 according to the mobile terminal charging method shown in FIG.

9A shows a state in which when the alignment of the mobile terminal 100 is poor, the mobile terminal 100 vibrates and the position of the mobile terminal 100 is switched to the wireless charging means 300 to the center area of the display unit 151. [ 9 (a), when the user moves the mobile terminal 100 to the center region of the wireless charging means 300, as shown in FIG. 9 (b) Alignment is good, and the mobile terminal 100 displays on the display unit 151 a user interface indicating the wireless charging progress.

10 is a flowchart showing another example of a mobile terminal charging method according to the present invention. Hereinafter, the charging method will be described with reference to necessary drawings.

A wireless charging signal is received through the charging coil (S300). Then, the sensing unit 250 'extracts the frequency of the wireless charging signal as a charging efficiency sensing factor (S310). Then, the controller 180 compares the sensed frequency with a reference frequency (S320). The reference frequency may be a frequency of a wireless charging signal transmitted from the wireless charging means when the charging efficiency of the mobile terminal 100 is optimal. The wireless charging means can increase the frequency of the wireless charging signal and increase the energy delivered to the mobile terminal 100 when the charging efficiency is lowered due to the poor alignment of the mobile terminal 100. [

If the sensed frequency is higher than the reference frequency (S330), the controller 180 determines that the alignment of the mobile terminal 100 is bad, and then provides feedback to the controller 150 through the output unit 150 S350). Otherwise, the controller 180 determines that the alignment of the mobile terminal 100 is good and displays the wireless charging start user interface on the display unit 151 (S340).

FIG. 11 shows an example in which the frequency of the output signal of the resonant circuit 210 including the charging coil Ls is extracted by the charging efficiency sensing factor according to the mobile terminal charging method shown in FIG.

When the wireless charging signal is received via the charging coil Ls and the capacitors 230s and Cd constituting a dual resonant circuit 215 together with the charging coil Ls, the frequency sensing means 250 ' And senses the frequency fsen of the wireless charging signal and transmits the sensed frequency fsen to the controller 180. Then, the controller 180 may provide predetermined feedback to the user based on the sensed frequency fsen.

11, the charging efficiency sensing factor of the mobile terminal 100 may be determined not only by the output terminal of the resonant circuit 210 but also by the frequency of the specific node signal that maintains the AC state of the received wireless charging signal Lt; / RTI > For example, the node to be frequency-sensed by the charging efficiency sensing factor may be a predetermined node between the output terminal of the charging coil and the input terminal of the rectifying circuit.

Each of the charging methods of the mobile terminal 100 according to the present invention may be implemented in a form of a program that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program recorded on the medium may be those specially designed and constructed for the present invention or may be those known to those skilled in the computer software.

Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of programs include high-level language code that can be executed by a computer using an interpreter or the like, as well as machine code as produced by a compiler. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: mobile terminal 110: wireless communication unit
116: input unit 120: A / V input unit
130: user input unit 140: sensing unit
150: output unit 151: display unit
152: Acoustic output unit 160:
170: interface unit 180: control unit
190: Power supply unit 195: Battery
200: power receiving unit 210: resonant circuit
222: communication modulator 230: rectifier circuit
240: charge voltage generation circuit 250, 250 '
300: Wireless charging means

Claims (10)

An output unit capable of generating an acoustic signal and a video signal vibration signal;
battery;
A wireless charging unit for receiving a wireless charging signal transmitted from the wireless charging unit to generate a charging voltage for charging the battery, a sensing factor of wireless charging efficiency for the wireless charging signal at a predetermined node, A power receiving unit for extracting a power supply voltage; And
And a control unit for determining an alignment state of the wireless charging means based on the extracted charging efficiency sensing factor and providing feedback reflecting the determination result through the output unit,
Wherein the charging efficiency sensing factor comprises:
A voltage sensed at the predetermined node,
Wherein,
Wherein the control unit compares the sensed voltage with a predetermined reference voltage, determines the charging efficiency based on the comparison result, and determines the alignment state of the wireless charging unit based on the determined charging efficiency Mobile terminal. The apparatus of claim 1,
If the extracted charging efficiency sensing factor is greater than a threshold value, providing feedback via the output unit to inform the start of wireless charging,
And provides the feedback through the output unit to guide the user to change the alignment of the mobile terminal if the extracted charging efficiency sensing factor is less than a predetermined threshold value. delete The apparatus of claim 1, wherein the power receiver comprises:
And a rectification circuit for converting the AC signal based on the wireless charging signal received through the charging coil to a DC signal,
Wherein the charging efficiency sensing factor comprises:
And a voltage sensed at the predetermined node between the output terminal of the rectifying circuit and the battery. The charging efficiency sensing device according to claim 1,
Further comprising a frequency of the predetermined node signal,
Wherein,
The frequency of the node signal is compared with a predetermined reference frequency, the charging efficiency is determined based on the comparison result, and the alignment state of the mobile terminal with respect to the wireless charging means is determined based on the determined charging efficiency Wherein the mobile terminal is a mobile terminal. 6. The apparatus of claim 5, wherein the power receiver comprises:
A charging coil for receiving the wireless charging signal; And
And a rectification circuit for converting an AC signal based on the wireless charging signal received through the charging coil to a DC signal,
Wherein the charging efficiency sensing factor comprises:
And a frequency of the predetermined node signal between an output terminal of the charging coil and an input terminal of the rectifying circuit. delete delete delete delete

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