KR101702584B1 - Wireless charging aparatus and method for a mobile comunication terminal - Google Patents

Abstract

A method for charging a non-contact power transmission apparatus of the present invention for transmitting power to a non-contact transmission receiving apparatus of a mobile terminal includes: when the mobile terminal operates in a low power mode, when a low power period arrives, A power transmission start step in which the device starts power transmission; And a power transmission interruption step of, when the listening interval comes, stopping the power transmission of the non-contact power transmission apparatus. According to the present invention, when the mobile terminal operates in the low power mode, since the reception sensitivity is not lowered in the listening interval, it is possible to receive the call or message signal stably in the reception standby state.

Description

TECHNICAL FIELD [0001] The present invention relates to a non-contact charging apparatus and method for a mobile terminal,

The present invention relates to a contactless charger used in a mobile communication terminal and a control method thereof.

The terminal can move And may be divided into a mobile terminal 100 and a stationary terminal according to whether the mobile terminal 100 is a mobile terminal. The mobile terminal 100 may be divided into a handheld terminal and a vehicle mount terminal depending on whether the user can carry the mobile phone directly.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

In recent years, there has been used a method of charging the charging unit and the battery (or the rechargeable battery) with a non-contact (or non-contact type) without forming contact terminals. However, there is a problem in that the wireless sensitivity of the terminal is lowered due to the electromagnetic wave generated in the non-contact charging.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a non-contact charging apparatus and method for a mobile terminal that can maintain the wireless sensitivity of a mobile terminal during non-contact charging.

In the non-contact power transmission apparatus according to an embodiment of the present invention for realizing the above-mentioned problems, when the mobile terminal operates in the low power mode, the non-contact power transmission apparatus transmits power to the non- A power transmission start step in which the contactless power transmission apparatus starts power transmission; And a power transmission interruption step of, when the listening interval comes, stopping the power transmission of the non-contact power transmission apparatus.

According to another aspect of the present invention, there is provided a contactless power transmitting apparatus for transmitting power to a contactless power receiving apparatus of a mobile terminal, the contactless power transmitting apparatus comprising: A power transmitter for transmitting a signal and receiving a control signal from the contactless power receiving device; And a transmission control unit for, when the mobile terminal operates in a low power mode, starting power transmission of the power transmission unit when a low power period arrives, and stopping power transmission of the power transmission unit when a listening interval arrives.

A mobile terminal for receiving power from a non-contact power transmission apparatus according to another embodiment of the present invention for realizing the above-mentioned problem is a mobile terminal that receives power signals and control signals from the non- A contact power receiving device; And a control unit that starts power transmission of the contactless power transmission apparatus when a low power period arrives when the mobile terminal operates in a low power mode and controls to stop power transmission of the contactless power transmission apparatus when a listening interval comes And a controller for causing the non-contact power receiving device to transmit a signal to the non-contact power transmitting device.

The non-contact charging apparatus and method of a mobile terminal according to at least one embodiment of the present invention configured as described above is characterized in that when the mobile terminal operates in a low power mode, reception sensitivity is not lowered in a listening interval, Or a message signal.

In addition, the non-contact charging apparatus and method of the mobile terminal according to at least one embodiment of the present invention configured as described above can minimize the influence of noise generated during the non-contact charging in the call state on wireless sensitivity.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
FIG. 2A is a front perspective view of a portable terminal according to an embodiment of the present invention; FIG.
FIG. 2B is a rear perspective view of a portable terminal according to an embodiment of the present invention; FIG.
3 is a block diagram of a configuration of a solid state charging system according to an embodiment of the present invention;
4 is a flow diagram of a method for a non-contact charging method when the mobile terminal 100 operates in a low power mode, according to an embodiment of the present invention.
Figures 5A through 5F are flow diagrams of a method for a non-contact charging when the mobile terminal operates in a normal mode, in accordance with an embodiment of the present invention.
6A and 6B are top and side sectional views of a contactless power transmission apparatus according to an embodiment of the present invention.

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 in this specification 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), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

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).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems 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 memory 160.

The mobile communication module 112 transmits and receives radio signals 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 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

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 a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

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 memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

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 current state 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, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. 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. It is also possible to sense 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 141.

The output unit 150 is for generating output related to the visual, auditory or tactile sense and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154 .

The display unit 151 displays (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 (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and 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.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded 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 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 recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; 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 152 may output audio data received from the wireless communication unit 110 or stored in the memory 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 module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs 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 be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

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 include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, 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 154 can be implemented not only to transmit the tactile effect through the 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 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

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

The memory 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), 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 mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 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 supplies power to each component in the mobile terminal 100 or transmits data to the 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 identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal 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 100 through the port.

When the mobile terminal 100 is connected to an external cradle, the interface unit may be a path through which power from the cradle is supplied to the mobile terminal 100, or various command signals input by the user to the cradle may be transmitted It can be a passage to be transmitted to the 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 controller 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.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

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 a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with 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 is stored in the memory 160 and can be executed by the control unit 180. [

2A is a perspective view of an example of a mobile terminal or a mobile terminal according to the present invention.

The disclosed mobile terminal 100 has a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The display unit 151, the sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The user input unit 130 is operated to receive a command for controlling the operation of the portable terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 may have a low pixel so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the camera 121 ' It is preferable to have a large number of pixels. The cameras 121 and 121 'may be installed in the terminal body so as to be rotatable or pop-upable.

A flash 123 and a mirror 124 are additionally disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

An acoustic output 152 'may be additionally disposed on the rear surface of the terminal body. The sound output unit 152 'may implement the stereo function together with the sound output unit 152 (see FIG. 2A), and may be used for the implementation of the speakerphone mode during a call.

In addition to the antenna for talking and the like, a broadcast signal reception antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the portable terminal 100 is mounted on the terminal body. The power supply unit 190 may be built in the terminal body or may be detachable from the outside of the terminal body.

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may also be of a light transmission type like the display unit 151. [ In this case, if the display unit 151 is configured to output time information on both sides, the time information can be recognized through the touch pad 135 as well. The information output on both sides may be all controlled by the touch pad 135. [ Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on the rear case 102 as well.

The touch pad 135 operates in correlation with the display portion 151 of the front case 101. The touch pad 135 may be disposed parallel to the rear of the display unit 151. The touch pad 135 may have a size equal to or smaller than that of the display unit 151.

Hereinafter, embodiments related to the terminal configured as above will be described with reference to the accompanying drawings. The following embodiments can be used alone or in combination with each other. In addition, the embodiments described below may be used in combination with the above-described user interface (UI).

Figure 3 is a block diagram of a solid state charging system, in accordance with one embodiment of the present invention. That is, the non-contact charging system according to an embodiment of the present invention includes the non-contact power transmission device 300, the non-contact power receiving device 200, and the mobile terminal 100.

The non-contact power transmission apparatus 300 receives a power signal from the outside and sends a power signal to the non-contact power reception apparatus 200. The non-contact power transmission apparatus 300 receives the power signal from the non- And charges the battery cell 191 with power and supplies power to the mobile terminal 100.

The contactless power transmission apparatus 300 includes a power supply unit 330, a power transmission unit 310, and a transmission control unit 320.

The power supply unit 330 supplies the power transmission unit 310 and the transmission control unit 320, which are supplied with power from the outside. A specific configuration of the power supply unit 330 includes a USB receiving port for receiving power and data signals from a USB port of a notebook computer or a computer, a power outlet for receiving external power, and a cigarette charger And a cigar connection port for connection to the portable terminal.

The power transmission unit 310 converts the power signal and the data signal supplied from the power supply unit 330 and the control signal supplied from the transmission control unit 320 and transmits the control signal to the secondary side core To the power receiving unit 210 having the unit 211. And receives control signals and the like supplied from the power receiving unit 210 and inputs them to the transmission control unit 320. [ The primary core portion may include two or more core portions. Or a current may be applied only to a part of the primary side core part.

The transmission control unit 320 controls the overall operation of the power supply unit 330 and the power transmission unit 310. The transmission control unit 320 exchanges various data signals or control signals with the reception control unit 220 through the power transmission unit 310 and the power reception unit 210.

In addition, a display unit (not shown) may be included to indicate the status of the non-contact power transmission device 300 according to a control signal of the transmission control unit 320. In addition, the processor and various data for the internal operation of the contactless power transmission apparatus 300 to be processed by the present invention can be stored in a transmission memory unit (not shown) as a storage means.

Meanwhile, the non-contact power receiving apparatus 200 according to the present invention includes a power receiving unit 210, a receiving control unit 220, and the like. The power receiving unit 210 includes a secondary side core unit 211 that performs inductive coupling with the primary side core unit 313 and receives a power signal and a control signal transmitted from the power transmitting unit 310, And transmits the control signal to the power transmitter 310. The power receiving unit 210 transmits the power received from the power transmitting unit 310 to the power supplying unit 190 of the mobile terminal 100 under the control of the receiving control unit 220 and / or the control unit 180 of the mobile terminal 100 Supply.

The power supply unit 190 of the mobile terminal 100 includes a charging circuit unit which may be configured separately from the power supply unit 190 so that the power received from the power receiving unit 210 is charged in the battery cell 191. Further, a charge detecting unit (not shown) for detecting the degree of charge of the battery cell 191 may be included. The charge detecting unit monitors the charge level of the battery cell 191 and transmits a signal indicating full charge or discharge to the receive controller 220.

The reception control unit 220 controls the overall operation of the contactless power receiving apparatus 200. The reception control unit 220 includes a power transmission unit 310 having a primary side core unit and a power transmission unit 310 connected to the power reception unit 210, And the data received and transmitted between the power receiving units 210 including the core unit 211 is processed. The power receiving unit 210 transmits / receives a control signal to / from the control unit 180 of the mobile terminal 100.

Meanwhile, the contactless power receiving apparatus 200 may be constituted by a battery pack or a semi-battery pack which is constructed separately from the mobile terminal 100 and detachably attached to the portable device, As shown in FIG. The power supply unit 190 and the battery cell 191 may be included in the non-contact power receiving apparatus 200. In this case,

FIG. 4 is a flowchart of a non-contact charging method when the mobile terminal 100 operates in a low power mode according to an embodiment of the present invention.

Hereinafter, it is understood that the mobile terminal 100 includes the contactless power receiving apparatus 200, and the mobile terminal 100 includes the contactless power receiving apparatus 200.

Referring to FIG. 4, an embodiment of the present invention includes a step of preparing for a non-contact charging (S110), a power mode checking step (S120) of the mobile terminal 100, a listening interval checking step (S130) (S140) and a power transmission stop step (S150).

When the mobile terminal 100 in which the non-contact power receiving apparatus 200 is attached / built is located on the non-contact power transmitting apparatus 300, the input from the power transmitting unit 310 is input The transmission control unit 320 detects the conductor and starts communication. When the non-contact power receiving apparatus 200 responds to a predetermined protocol, the transmission control unit 320 prepares to transmit power by applying power to the primary core unit 313 so as to transmit power . If the contactless power receiving apparatus 200 does not respond to the predetermined protocol, it is determined that the metal piece is a coin, and the power supply to the primary side core unit 313 is stopped.

When the reception control unit 220 receives a signal transmitted from the non-contact power transmission apparatus 300, the reception control unit 220 transmits information such as whether the mobile terminal 100 is attached, the unique identification number (ID) of the mobile terminal 100, To the non-contact power transmission device (300). When the transmission control unit 320 receives the signal transmitted from the reception control unit 220, the charging preparation is completed, and when the charging start signal to be described later is received, the power transmission is started.

The above description of the charging preparation step is only one example, but the present invention is not limited thereto and includes all examples leading to a state in which charging can be started.

When the solid state charging preparation is completed, the power mode in which the mobile terminal 100 is in the charge waiting state is checked (S120).

The power mode in which the mobile terminal 100 operates typically includes a low power mode and a normal mode. In the low power mode, a low power period in which the wireless communication unit is turned off and a listening interval in which the wireless communication unit is turned on are periodically repeated to minimize the power consumption of the mobile terminal 100. [ In the listening interval, the mobile terminal 100 determines the presence or absence of download traffic directed to the mobile terminal 100, and receives a small-sized message or the like through the paging channel. If there is an incoming call signal in the listening interval, it transits to the normal mode.

The low power mode includes a sleep mode and an idle mode.

In general, the sleep mode includes sleep-window and listening-window approved by the base station through message signaling between the mobile terminal 100 and the base station in order to save power of the mobile terminal 100 Sleep mode This mode is used to operate the pattern. In general, the idle mode is a paging group, a paging cycle, and a paging group approved by the base station through message signaling between the mobile terminal 100 and the base station in order to save power and save idle radio resources of the mobile terminal 100, , And paging offset (paging offset). A Paging Unavailable Interval, and a Paging Listening Interval.

Here, the normal mode, which is a mode distinguished from the sleep mode and the idle mode, is a mode in which the mobile terminal 100 sets a resource and a session through a network entry to provide a service provided by the corresponding system .

The low power mode described above is not limited to this, and may include all cases where the wireless communication unit periodically repeats on / off.

When the preparation for charging is completed, the contactless power receiving apparatus 200 transmits a charge preparation completion signal to the control unit 180 of the mobile terminal 100, and the controller 180 receiving the charge preparation completion signal notifies the operation mode of the mobile terminal 100 (S120). The operation of the mobile terminal 100 in the normal mode will be described later. In the following, the power charging process in the case where the mobile terminal 100 operates in the low power mode will be described in detail.

When the mobile terminal 100 operates in the low power mode, the control unit 180 of the mobile terminal 100 checks the listening interval (S130). That is, the period of the listening interval, the starting point of the listening interval (the end point of the low-power interval), and the ending point of the listening interval (the low-power interval starting point) are confirmed.

The information on the listening interval may be predetermined according to the mobile terminal 100 and stored in the memory. The control unit 180 may transmit the information on the listening interval to the non-contact power receiving apparatus 200 and / or the non-contact power transmitting apparatus 300. [ The information may also be stored in the memory of the non-contact power receiving device 200 and / or the non-contact power transmitting device 300. Further, the control unit 180 transmits a synchronization signal for precisely matching the start and stop of power transmission of the non-contact power transmission apparatus 300 to the non-contact power transmission apparatus 300 and the non-contact power transmission apparatus 300 . The contactless power receiving apparatus 200 starts or stops power transmission in accordance with the listening interval using the received information and synchronization signal.

In general, CDMA uses a slot cycle index (SCI) cycle 2. Period 2 is 5.125 seconds in time, 5 seconds in low power interval and 0.125 seconds in listening interval. The listening interval may be longer or shorter depending on the amount of work the terminal has to do. That is, if there is no paging information, the terminal enters the low power section immediately, so that the listening interval may not be 100 ms or 200 ms or more if there is paging information.

The transmission control unit 320 of the non-contact power transmission device 300 determines whether the power transmission unit 310 is in the power reception unit 210 of the non-contact power reception device 200, when the mobile terminal 100 enters the low power period (S131) Lt; RTI ID = 0.0 > (S140). ≪ / RTI > The low-power period does not affect the reception sensitivity of the mobile terminal 100 even if electromagnetic waves are generated by the non-contact power transmission because the traffic is not uploaded or downloaded in a period in which the wireless communication unit is turned off. Therefore, the maximum power can be transmitted in the low power period.

The control unit 180 of the mobile terminal 100 transmits a power transmission start signal to the non-contact power receiving apparatus 200 when the mobile terminal 100 enters the low power period, The reception control unit 220 of the reception apparatus 200 transmits a power transmission start signal to the non-contact power transmission apparatus 300 through the power reception unit 210. Upon receiving the power transmission start signal, the non-contact power transmission apparatus 300 transmits power to the non-contact power reception apparatus 200.

When the mobile terminal 100 enters the listening interval (S132), there may be no transmission of the power transmission start signal. When the mobile terminal 100 is determined to be in a low power mode (the mobile terminal 100 transmits a low power mode acknowledgment signal), the transmission control unit 320 determines whether the mobile terminal 100 is in the memory of the contactless power transmission apparatus 300, When the mobile terminal 100 transits to the normal mode (the mobile terminal 100 transmits a normal mode transition signal), the mobile terminal 100 starts power transmission at the time of periodically entering the listening interval using the listening interval information and the synchronization signal received from the mobile terminal 100, Thereby stopping periodically initiating power transmission.

The transmission control unit 320 confirms the elapsed time from the entry point of the low-power section or the entry point of the immediately preceding section, and when the predetermined time elapses The power transmission is stopped.

The transmission control unit 320 of the non-contact power transmission apparatus 300 transmits the power control signal to the power transmission unit 310 in order to prevent the wireless sensitivity of the mobile terminal 100 from being affected when the mobile terminal 100 enters the listening interval. The power transmission is interrupted (S150).

When the mobile terminal 100 enters the listening interval, the control unit 180 of the mobile terminal 100 transmits a power transmission stop signal to the non-contact power receiving apparatus 200 simultaneously with or immediately before the entry into the listening interval, The reception control unit 220 of the non-contact power receiving apparatus 200 receiving the power transmission interruption signal transmits a power transmission interruption signal to the non-contact power transmission apparatus 300 through the power receiving unit 210. Upon receiving the power transmission start signal, the non-contact power transmission device 300 stops power transmission.

When the mobile terminal 100 enters the listening interval, there may be no transmission of the power transmission interruption signal. When the mobile terminal 100 enters the low power period, the power transmission of the non-contact power transmission apparatus 300 is started. The transmission control unit 320 confirms the elapsed time from the entry point of the low power period or the entry point of the immediately preceding listening interval And stops power transmission when a predetermined time has elapsed.

When the mobile terminal 100 enters the listening interval, the controller 180 of the mobile terminal 100 confirms the power mode in which the mobile terminal 100 operates by checking the traffic or the like directed to the mobile terminal 100. [ At this time, if there is a call signal or the like directed to the mobile station, the mobile station transits to the normal mode. If the mobile station does not transit to the normal mode, the mobile station maintains the sleep mode and performs the power transmission start step S140 and the power transmission stop step S150 ).

5A to 5F are flowcharts of a non-contact charging method when the mobile terminal 100 operates in the normal mode according to an embodiment of the present invention.

In the case of operating in the normal mode, that is, when the wireless communication unit is continuously turned on, the wireless sensitivity may be lowered due to the electromagnetic wave being induced in the wireless communication unit due to the non-contact charging. The following description will be made on the assumption that when a transition is made to the normal mode by confirming an incoming call signal in the listening interval, or when the mobile station is operating in the normal mode from the charging preparation completion state, during the charging (during operation in the low power mode) Or the like, or the like. When the normal mode ends and the mode transits to the sleep mode, the controller 180 controls the non-contact power transmission apparatus 300 to transmit power according to the above-described method.

In the low power mode or the general mode, the wireless communication unit is not limited to the mobile communication module 112 that communicates with the base station. The wireless communication unit 111, the wireless Internet module 113, the short distance communication module 114, 115). Therefore, the normal mode means that at least one of the modules continuously operates, and the low power mode means that all the modules periodically repeat the low power period and the listening interval.

Referring to FIG. 5A, when the mobile terminal 100 operates in the normal mode, it can select whether the mobile terminal 100 is in the non-contact state according to the user's selection. For example, when operating in the normal mode, "non-contact charging", "non-contact charging only when the degree of charging of the battery cell 191 is less than a predetermined value", " Selection menu such as "charging stop" and "radio sensitivity reduction check" is displayed on the display unit 151 of the mobile terminal 100 (or the contactless power transmitting apparatus 300), and at least one of the users is selected (S220, S221). Each will be described later. The control unit 180 determines whether or not to perform the non-contact charging according to the user's selection (S300). The selection of the user may be stored in the memory of the mobile terminal 100 or the non-contact power transmission apparatus 300 (S230), and then the non-contact charging state may be determined according to the user selection stored in the normal mode operation (S210, S300) .

Referring to FIG. 5B, in the case where the "non-contact charging" is selected, the non-contact power transmission device 300 starts power transmission (S310) when it starts from the beginning or transits in the low power mode to the normal mode, (S120). ≪ / RTI >

Referring to FIG. 5C, when "always non-contact charging stop" is selected, the power transmission of the non-contact power transmission device 300 is interrupted while operating in the normal mode (S311).

5D, the control unit 180 controls the non-contact power transmission apparatus 300 to transmit power (S320), and transmits the non-contact power transmission apparatus 300 to the non- (Step S321). If the wireless sensitivity falls below a predetermined value (which may vary depending on the module of the operating wireless communication unit), the non-contact power transmitting apparatus 300 stops transmitting power or transmits lower power as described below ( S323). In the case of transmitting low power, it is possible to readjust the wireless sensitivity and readjust the transmission power (S321, S322, S323). If the wireless sensitivity does not deteriorate, the current charging power is maintained (S324).

Referring to FIG. 5E, when the mobile terminal 100 operates in the normal mode when the "non-contact charging only " is selected only when the degree of charge of the battery cell 191 is less than the predetermined value, 180) or the reception control unit 220 of the non-contact power receiving apparatus 200 confirms the degree of charging of the battery cell 191 (S330). The control unit 180 and / or the reception control unit 220 transmits a power transmission stop signal to the transmission control unit 320 of the non-contact power transmission device 300 when the battery cell 191 is charged to a predetermined value or more. Accordingly, the non-contact power transmission device 300 stops power transmission (S332). The control unit 180 and / or the reception control unit 220 may determine that the battery cell 191 is charged to less than a predetermined value or periodically confirmed that the degree of charge of the battery cell 191 is less than a predetermined value, And transmits a power transmission start signal to the transmission control section 320 of the transmission apparatus 300 (S333). Thus, the contactless power transmitting apparatus 300 starts power transmission. Thus, according to the above method, the total power transmission time can be minimized, and the minimum power required to maintain the normal mode can be discontinuously supplied. In addition, the method can be selected at the same time as the "non-contact charging power down" function.

Referring to FIG. 5F, when the mobile terminal 100 operates in the normal mode when the "non-contact charging power lowering" is selected, in order to reduce the influence of the non- The control unit 180 of the mobile terminal 100 transmits a low power transmission signal for lowering the power output from the non-contact power transmission apparatus 300 to the transmission control unit 320 (S340). The reception control unit 220 receiving the signal controls the power transmission unit 310 to output a low power.

According to one embodiment of the method for the power transmitter 310 to output low power, the transmission controller 320 controls the power transmitter 310 to supply a current smaller in magnitude than the current applied in the low power mode to the power transmitter 310 to the primary side core portion 313 of the primary side. That is, the magnitude of the current applied to the primary core portion 313.

According to another embodiment of the method by which the power transmitting unit 310 outputs the low power, the transmission control unit 320 converts the power supplied from the power transmitting unit 310 (in particular, the power transmitting unit and supplied from the power supplying unit 330) (Not shown) that transmits the current to the primary side core unit and changes / reduces the switching frequency of the current applied to the primary side core unit 313 of the power transmission unit 310. The changed switching frequency may be determined according to the module of the wireless communication unit to be used, according to the frequency of the wireless channel used by the mobile terminal 100 in the normal mode.

According to another embodiment of the method for the power transmission unit 310 to output the low power, the size of the primary core unit 313 to which the current is applied can be varied.

Referring to FIG. 6, the primary core portion 313 includes an outer core having a predetermined number of turns and a predetermined size. And an inner core spaced apart from the outer core so as to be spatially contained inside the outer core. The power transmission unit 310 applies a current to the outer core and / or the inner core using a switching circuit (not shown) under the control of the transmission control unit 320. [ The primary core portion 313 is formed of one core (that is, an outer core and an inner core are connected to each other), and a current may be applied to a portion of the core using a switching circuit. In the low power mode, current is applied to both the outer core and the inner core, and in the normal mode, current can be applied to either the outer core or the inner core. Or in the low power mode, current is applied to the outer core that transmits high power, and in the normal mode, current may be applied to the inner core that transmits low power.

Upon receiving the low power transmission signal from the control unit 180, the transmission control unit 320 controls the switching circuit of the power transmission unit 310 to change the core to which the current is applied as described above to reduce the output power .

As described above, if the power transmission of the non-contact power transmission device 300 is interrupted or reduced as the mobile terminal 100 operates in the normal mode, the controller 180 controls the power of the mobile terminal 100 (or the non- It is possible to indicate that the non-contact charging is interrupted or reduced in the display unit 151 of the transmission apparatus 300 (transmission apparatus 300).

Further, according to an embodiment of the present invention, the above-described method can be implemented as a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

The above-described non-contact charging apparatus and method of the mobile terminal can be applied to a configuration and a method of the embodiments described above in a limited manner, but the embodiments can be applied to all or some of the embodiments May be selectively combined.

In the foregoing, preferred embodiments of the present invention have been described with reference to the accompanying drawings.

Here, the terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, but should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

100: mobile terminal
200: Solid state power receiver
300: Solid state power transmitter

Claims (26)

delete delete delete delete delete delete delete delete delete delete delete delete delete A contactless power transmission apparatus for transmitting power to a non-contact power receiving apparatus of a mobile terminal,
A wireless communication unit including a module for enabling wireless communication with the mobile terminal;
A power transmitter for transmitting a power signal and a control signal to the contactless power receiving device through the primary side coil part and receiving a control signal from the contactless power receiving device;
When the mobile terminal is operating in a low power mode in which the wireless communication unit is turned off, when the low power period arrives, the power transmission unit starts transmitting power, and when a listening interval in which the wireless communication unit is turned on comes, And a transmission control unit for stopping the power transmission of the power transmission unit.
If the mobile terminal is operating in the normal mode when there is an incoming call signal in the listening interval, the control unit controls the power transmitting unit to transmit power lower than the power transmitted in the low power period .
Wherein the primary coil portion includes an outer core and an inner core that can selectively apply current,
The transmission control unit,
Wherein the controller controls the current to be applied to the outer core for transmitting the high power signal in the low power mode and to transmit the current to the internal core for transmitting the low power signal in the normal mode. . 15. The apparatus of claim 14, wherein the transmission control unit
Wherein the non-contact power transmission device controls the mobile station to receive from the mobile terminal a low power transmission signal for lowering the power output from the contactless power transmission device when the mobile terminal operates in the normal mode. Power transmission device. 15. The method of claim 14,
The transmission control unit
Wherein the current is applied to both the outer core and the inner core in the low power mode and the current is applied to the inner core in the normal mode. 16. The method of claim 15,
The transmission control unit
And controls the power transmission unit to change a switching frequency of a current applied to a part of the primary coil. A mobile terminal for receiving power from a contactless power transmission device,
A non-contact power receiving device for receiving a power signal and a control signal from a primary coil part of the non-contact power transmission device through a secondary coil part;
When the mobile terminal operates in a low power mode in which the wireless communication unit is turned off, when the low power period arrives, the mobile station starts power transmission of the wireless power communication apparatus and the listening interval in which the wireless communication unit is turned on And a control unit for causing the contactless power receiving apparatus to transmit a control signal for stopping power transmission of the contactless power transmitting apparatus to the contactless power transmitting apparatus when the contactless power transmitting apparatus arrives,
Wherein the mobile terminal operates in a normal mode when receiving an incoming call signal in the listening interval and receives power smaller than the power transmitted in the low power interval in the normal mode,
Wherein the low power mode receives a high power signal from the outer core of the first core part and receives the low power signal from the inner core of the first core part in the normal mode. 19. The apparatus of claim 18, wherein the controller
And confirms a power mode in which the mobile terminal operates. 19. The method of claim 18, wherein the low power mode
Wherein the sleep mode is a sleep mode or an idle mode. 19. The apparatus of claim 18, wherein the controller
Power transmission control signal for causing the non-contact power transmission apparatus to transmit power lower than the power transmitted in the low-power period, when the mobile terminal operates in the normal mode, the non-contact power transmission apparatus transmits the low- To the mobile terminal. 19. The apparatus of claim 18,
Wherein the low power mode receives the high power signal from both the outer core and the inner core and receives the low power signal from the inner core in the normal mode. 19. The apparatus of claim 18, wherein the controller
The mobile terminal checks the charged amount of the battery cell and causes the non-contact power transmission apparatus to stop the power transmission when the charged amount is equal to or greater than a predetermined value. 19. The apparatus of claim 18, wherein the controller
The wireless sensor of the mobile terminal checks the wireless sensitivity of the wireless terminal when the wireless terminal transmits the power and the wireless terminal stops or reduces the power transmission when the wireless sensitivity of the wireless terminal drops below a predetermined value The mobile terminal comprising: 22. The apparatus of claim 21, wherein the control unit
Wherein the display unit indicates that the power transmission is interrupted or reduced. 19. The apparatus of claim 18, wherein the controller
Wherein the non-contact power transmission device selects whether to stop power transmission and / or decrease a magnitude of power to be transmitted according to a user input when the mobile terminal operates in a normal mode.

Images