KR101747787B1 - Method for displaying video in home network and mobile terminal using this method - Google Patents

Abstract

TECHNICAL FIELD [0001] The present invention relates to a terminal, and more particularly, to a video display method and a mobile terminal using the same. According to another aspect of the present invention, there is provided an image display method including: capturing an image displayed by a target device; real-time searching for a broadcast channel in which the captured image is currently being broadcast, Displaying a found broadcast channel image when a broadcast channel on which the photographed image is currently broadcast is found, and receiving a video image displayed by the target device when the broadcast channel on which the photographed image is currently broadcast is not found is displayed .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a video display method in a home network and a mobile terminal using the same,

TECHNICAL FIELD [0001] The present invention relates to a terminal, and more particularly, to a video display method and a mobile terminal using the same.

A terminal can be divided into a mobile / portable terminal and a stationary terminal depending on whether the terminal is movable. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

As the functions of such terminals are diversified, they are implemented in the form of a multimedia player having complex functions such as photographing and photographing of movies, reproduction of music and video files, games, and broadcasting reception . 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.

2. Description of the Related Art [0002] In recent years, a terminal is connected to other electronic devices through a home network to provide a function of transmitting and receiving data with other electronic devices. For example, the terminal can display and display image content stored in another electronic device. In order to do this, the terminal must acquire information on image contents from other electronic devices. In this process, the user has to complicate settings related to connection of the terminal and other electronic devices.

It is an object of the present invention to provide an image display method and a mobile terminal using the image display method in which a user can watch images while moving between a terminal and another electronic device in a more convenient manner.

According to an embodiment of the present invention, there is provided an image display method for realizing the above-mentioned object, comprising the steps of: capturing an image displayed by a target device; Displaying the found broadcast channel image when a broadcast channel in which the taken image is currently broadcast is found and displaying the found broadcast channel image if the broadcast channel on which the taken image is currently broadcast is not found, And receiving and displaying an image displayed by the target device.

According to an aspect of the present invention, there is provided a mobile terminal including a display unit, a camera for capturing an image displayed by the target device, a broadcast receiving module for receiving a broadcast signal through a broadcast channel, And displaying the found broadcast channel image on the display unit when the broadcast channel in which the taken image is currently broadcast is found, And a control unit for receiving the image displayed by the target device and displaying the received image on the display unit if the broadcast channel on which the captured image is currently broadcast is not found.

The image display method and the mobile terminal using the same according to at least one embodiment disclosed herein may identify an electronic device displayed on an image photographed by a camera included in the mobile terminal on a home network, By transmitting and receiving the image content information or the image content data, the user can view the image by moving the terminal and another electronic device in a more convenient manner.

1 is a block diagram illustrating a mobile terminal according to one embodiment disclosed herein.
FIGS. 2, 3, and 4 are exemplary diagrams illustrating a process of displaying a display image of a video display device according to an embodiment of the present invention.
FIGS. 5, 6, and 7 are exemplary views illustrating a process of controlling a video display device to display a designated video according to an exemplary embodiment of the present invention.
8 is a flowchart illustrating a video call method according to an embodiment disclosed herein.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. 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. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. In addition, it should be noted that the attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and should not be construed as limiting the technical idea disclosed in the present specification by the attached drawings.

Overall configuration of mobile terminal

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), 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 illustrating a mobile terminal according to one embodiment disclosed herein.

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

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, a 3D display, and an e-ink 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.

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. At least two haptic modules 154 may be provided according to the configuration of the mobile 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), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read- 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 usage 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 , Microprocessors, microprocessors, microprocessors, and other electronic units for carrying out other functions. In some cases, the embodiments described herein may be implemented by the controller 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. [

Method of processing user input to a mobile terminal

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100, and may include a plurality of operation units. The operating units may also be referred to as manipulating portions and may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression.

Various types of time information can be displayed on the display unit 151. [ These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

At least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement for inputting such information, thereby being implemented as a keypad. Such a keypad may be called a so-called " soft key ".

The display unit 151 may operate as an entire area or may be divided into a plurality of areas and operated. In the latter case, the plurality of areas can be configured to operate in association with each other.

For example, an output window and an input window may be displayed on the upper and lower portions of the display unit 151, respectively. The output window and the input window are areas allocated for outputting or inputting information, respectively. In the input window, a soft key with a number for entering a telephone number or the like may be output. When the soft key is touched, the number corresponding to the touched soft key is displayed on the output window. When the operating unit is operated, a call connection to the telephone number displayed in the output window may be attempted, or the text displayed in the output window may be entered into the application.

The display unit 151 or the touch pad may be configured to receive a touch input by scrolling. The user can move a cursor or a pointer located on an object displayed on the display unit 151, for example, an icon or the like, by scrolling the display unit 151 or the touch pad. Further, when the finger is moved on the display unit 151 or the touch pad, the path along which the finger moves may be visually displayed on the display unit 151. [ This will be useful for editing the image displayed on the display unit 151. [

One function of the terminal may be executed in response to a case where the display unit 151 (touch screen) and the touch pad are touched together within a predetermined time range. In the case of being touched together, there may be a case where the user clamps the terminal body using the thumb and index finger. The one function may be, for example, activation or deactivation of the display unit 151 or the touch pad.

Hereinafter, embodiments related to a control method that can be implemented in a 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).

First, concepts or terms necessary for explaining the embodiments of the present invention will be described.

DLNA

The DLNA (Digital Living Network Alliance) protocol is a protocol or interoperability guidelines that enable electronic devices in a home to be connected to a home network to share digital content. Home network technology is a technology that connects physical network technology such as Ethernet, HomePNA (Home Phoneline Networking Alliance), RF (Radio Frequency) and PLC (Power Line Communication) and communication between devices, sensors, Protocol technology, middleware technology for mutual discovery, configuration and management between devices on a configured home network, and service technologies based on these middleware.

Digital home has developed the idea of computers, home appliances and mobile devices in the home to collaborate through wired and wireless networks to share digital content. Digital living extends this idea further, enabling digital content to be shared on-the-go between electronic devices, regardless of manufacturer.

The DLNA protocol provides interoperability guides for networking, device discovery and control, media management, media format, and media transport. The DLNA protocol adopts IP (Internet Protocol) as the basic network protocol for networking and connectivity. In addition, the DNLA protocol is a Universal Plug and Play Device (UPnP DA) based on Simple Service Discovery Protocol (SSDP), General Event Notification Architecture (GENA) and Simple Object Access Protocol (SOAP) Architecture, and UPnP AV (Universal Plug and Play Audio / Video) is adopted as an interoperable protocol for media contents management. The media content format is divided into audio, image, and video formats, and HTTP is adopted as an interoperable protocol for media transmission.

DLNA Certified Device Class

The Home Network Devices class includes a digital media server (DMS), a digital media player (DMP), a digital media renderer (DMR), a digital media controller ; DMC), and Digital Media Printer (DMPr).

A digital media server (DMS) stores content and provides content to a digital media player (DMP) and a digital media renderer (DMR) connected to the network. A digital media server (DMS) also protects stored content. Examples of a digital media server (DMS) include a personal computer (PC) and a network attached storage (NAS).

The digital media player (DMP) discovers the contents existing in the digital media server (DMS) and provides the contents reproduction or rendering function. Examples of digital media players (DMPs) include television receivers (TVs), stereo home theaters, wireless monitors, game consoles, and the like.

The Digital Media Renderer (DMR) plays the content received from the Digital Media Controller (DMC), and the Digital Media Controller (DMC) finds the content in the Digital Media Server (DMS). Examples of digital media renderers (DMRs) include TVs, A / V receivers, video displays, and remote speakers for music.

The digital media controller (DMC) finds the content that exists in the digital media server (DMS) and reproduces it in the digital media renderer (DMR). Examples of digital media controllers (DMCs) include Internet tablets, WiFi-enabled digital cameras, and personal digital assistants (PDAs).

The digital media printer (DMPr) provides a printing service to the DLNA home network. Generally, a digital media player (DMP) having a print function and a digital media controller (DMC) print to a digital media printer (DMPr). Examples of the digital media printer (DMPr) include a photo printer connected to a network, an all-in-one printer connected to a network, and the like.

Mobile handheld devices include mobile digital media servers (M-DMS), mobile digital media players (M-DMP), mobile digital media uploaders (M-DMU), a mobile digital media downloader (M-DMD), and a mobile digital media controller (M-DMC).

A mobile digital media server (M-DMS) stores content and provides content to a mobile digital media player (M-DMP), a digital media renderer (DMR), and a digital media printer (DMPr) connected to a wired or wireless network. Examples of mobile digital media servers (M-DMS) include mobile phones, portable music players, and the like.

A mobile digital media player (M-DMP) finds and plays content that exists in a digital media server (DMS) or a mobile digital media server (M-DMS). Examples of mobile digital media players (M-DMPs) include mobile phones and mobile media tablets designed to view multimedia content.

The mobile digital media uploader (M-DMU) transmits (uploads) content to a digital media server (DMS) or a mobile digital media server (M-DMS). Examples of mobile digital media uploaders (M-DMUs) include digital cameras, mobile phones, and the like.

The mobile digital media downloader (M-DMD) discovers and stores (downloads) content from a digital media server (DMS) or a mobile digital media server (M-DMS). Examples of mobile digital media downloaders (M-DMDs) include portable music players, mobile phones, and the like.

The mobile digital media controller (M-DMC) finds the content existing in the digital media server (DMS) or the mobile digital media server (M-DMS) and transmits the content to the digital media renderer (DMR). Examples of mobile digital media controllers (M-DMC) include PDAs, mobile phones, and the like.

The Home Infrastructure Devices class includes a Mobile Network Connectivity Function (M-NCF) and a Media Interoperability Unit (MIU).

The Mobile Network Access Function (M-NCF) provides a mediation function between a mobile handheld device network connection and a home network connection.

The Media Interchange Unit (MIU) provides content conversion between the media formats required for the home network and the mobile handheld device.

How DLNA certified devices work

A first example in which a DLNA certified device operates is to discover and play movie content. Movie contents are stored in NAS, digital media server (DMS) and the like. Instead of watching movies on a small PC monitor, users can find movie content on NAS and play them on a big screen TV using the Digital Media Player (DMP) feature of DLNA certified large screen TV.

A second example in which a DLNA certified device operates is to transmit and display pictures. The user can transmit and display the pictures stored in the digital camera, which is an authenticated digital media controller (DMC), to a TV, which is an authenticated digital media renderer (DMR).

A third example in which a DLNA certified device operates is to discover, transmit and play music content. A user can load music content into a PC, which is an authenticated digital media server (DMS). Using a PDA that is an authentic mobile digital media controller (M-DMC), a user can find a desired song on a PC and send it to DLNA-certified wireless speakers for playback. In this case, the speaker provides an authenticated digital media renderer (DMR) function.

A fourth example in which a DLNA certified device operates is to upload a photo. If a photo is stored in the PDA, which is an authenticated mobile digital media uploader (M-DMU), the user can transfer the photo stored in the PDA to the NAS, which is an authenticated digital media server (DMS).

A fifth example in which the DLNA certified device operates is to download music content. The user can transmit music content from an authenticated digital media server (DMS) PC to an MP3 player, which is an authenticated mobile digital media downloader (M-DMD).

A sixth example in which a DLNA certified device operates is to transmit and print a picture. The user transmits the photograph stored in the camera phone, which is an authenticated mobile digital media controller (M-DMC), to a printer, which is an authenticated digital media printer (DMPr) using a Wi-Fi function supported by the camera phone, .

A video display method in a home network and a mobile terminal using the method

According to at least one embodiment of the present invention as described above, an image display method is provided that identifies an electronic device displayed on an image photographed by a camera provided in a mobile terminal on a home network, Or video content data, thereby allowing a user to enjoy the video while moving between the terminal and another electronic device in a more convenient manner.

Hereinafter, for ease of explanation, the mobile terminal 100 according to at least one embodiment disclosed herein may share digital contents with other electronic devices (for example, the video display device 200) according to the DLNA protocol, It is assumed that digital content related information is transmitted and received. However, the configuration in which the mobile terminal 100 operates in accordance with the DLNA protocol is intended to explain only one embodiment disclosed herein, and the technical idea of at least one embodiment disclosed in this specification is not limited to such an embodiment Be careful.

That is, the mobile terminal 100 according to at least one embodiment disclosed herein transmits and receives digital data to and from other electronic devices in accordance with all possible types of home network technologies or home network protocols capable of transmitting and receiving digital data between electronic devices can do. For example, the mobile terminal 100 transmits and receives digital data to and from other electronic devices according to a home network technology based on a wireless local area network (WLAN) equipped with device discovery and device management mechanisms. You may.

FIGS. 2, 3, and 4 are exemplary diagrams illustrating a process of displaying a display image of a video display device according to an embodiment of the present invention. 2, 3 and 4, the video display device 200 may be a digital TV.

2, the video display device 200 includes a content provider (contents) such as a terrestrial broadcast station 300, a cable TV broadcast station (not shown), a DMB broadcast station (not shown), and an IPTV the digital content can be received from the provider and displayed. In FIG. 2, the video display device 200 displays the broadcast video on channel 11.

The mobile terminal 100 may search for a broadcast / content channel displayed by the video display device 200 while switching (scanning) a terrestrial broadcast channel, a cable TV broadcast channel, a DMB broadcast, and an IPTV broadcast / content channel.

To this end, the mobile terminal 100 photographs a broadcast image displayed by the image display device 200 using the camera 121, and broadcasts the same image as the photographed image (that is, A broadcast channel currently broadcasting an image) can be searched in real time. The real-time search operation of the mobile terminal 100 can be started by a predetermined type of touch input (for example, a multi-touch input for widening the interval between touch points) on the display unit 151 (touch screen).

Referring to FIG. 3, the mobile terminal 100, which has found a broadcast / content channel displayed by the video display device 200, generates a terrestrial broadcast station 300, a cable TV broadcast station (not shown) , A DMB broadcasting station (not shown), an IPTV server 400, and the like.

3, after the mobile terminal 100 displays the broadcast / content channel image, the video display device 200 may not display the broadcast / content channel image. That is, video display switching from the video display device 200 to the mobile terminal 100 can be performed.

Referring to FIG. 4, unlike FIG. 3, the mobile terminal 100 may directly receive digital content from the content display device 200 without receiving the digital content. For example, the mobile terminal 100 can receive video data that the video display device 200 is receiving or displaying from the video display device 200 through short-range communication such as Bluetooth.

The video display device 200 may correspond to a digital media server (DMS) or a digital media controller (DMC) on the DLNA protocol and the mobile terminal 100 may correspond to a mobile digital media player (M- DMP).

Hereinafter, the function of the mobile terminal according to the embodiment disclosed herein to perform a video call through the television receiver will be described in more detail.

The camera 121 captures an image displayed by the target device.

The broadcast receiving module 111 receives a broadcast signal through a broadcast channel. The mobile communication module 112 or the wireless Internet module 113 may receive the content data through a content channel such as an IPTV channel.

The control unit 180 searches the broadcast / content channel currently being broadcasted by the photographed image in real time while switching the broadcast / content channel. Particularly, in real-time searching for a broadcast / content channel, the controller 180 may collate the photographed image with the currently broadcast / content channel image. For such image matching, a known computer graphics processing technique capable of determining the similarity between images such as a contour detection technique can be used.

If the broadcast channel in which the photographed image is currently broadcast is found, the control unit 180 displays the found broadcast channel image on the display unit 151. [ Additionally, the control unit 180 may store the found broadcast channel in a favorite list.

If the broadcast channel currently broadcasting the photographed image is not found, the control unit 180 can receive the image displayed by the target device and display the received image on the display unit.

2 to 4, the control unit 180 may control the broadcast receiving module 111 to receive the video signal or the video data of the broadcast channel.

Alternatively, the control unit 180 may control the short-range communication module 114 to receive the video data of the broadcast channel from the target device. The short range communication module 114 may include a Bluetooth module. In this case, the mobile terminal 100 and the target device can be connected through Bluetooth pairing.

FIGS. 5, 6, and 7 are exemplary views illustrating a process of controlling a video display device to display a designated video according to an exemplary embodiment of the present invention. 5, 6 and 7, the video display device 200 may be a digital TV.

5, the mobile terminal 100 receives digital content from a content provider such as a terrestrial broadcasting station 300, a cable TV broadcasting station (not shown), a DMB broadcasting station (not shown), an IPTV server 400, can do. In FIG. 5, the mobile terminal 100 displays the broadcast image of channel 11.

The mobile terminal 100 may photograph the image display device 200 using the camera 121 and search the database for an image display device having the same form as the image display device 200. [ The search operation of the mobile terminal 100 may be initiated by a predetermined type of touch input (for example, a multi-touch input for widening the interval between touch points) on the display unit 151 (touch screen).

The database may include data such as specification information of the image display device, a front view, a rear view, a left view, a right view, a plan, a side view, and a perspective view of the image display device.

The database may be stored in the memory 160 of the mobile terminal 100 or in the form of an external device accessible through the wireless communication unit 110. The mobile terminal 100, which has identified the image display device 200 through the database search, determines which electronic device is to receive the photographed image display device 200 through the form information such as the specification information or the front view, (200).

The mobile terminal 100 that has identified the image display device 200 through the database search identifies the identified image display device 200 on the DLNA network and transmits the identified image display device 200 to the identified image display device 200, Content channel information indicated by the broadcast / content channel information displayed by the broadcast /

6, the video display device 200 may receive a broadcast signal from a terrestrial broadcast station 300, a cable TV broadcast station (not shown), a DMB broadcast station (not shown) The digital content can be received from a content provider such as the IPTV server 400 and displayed.

6, after the video display device 200 displays the broadcast / content channel video, the mobile terminal 100 may not display the broadcast / content channel video. That is, video display switching from the mobile terminal 100 to the video display device 200 can be performed.

Referring to FIG. 7, unlike FIG. 6, the video display device 200 may receive digital content directly from the content provider through the mobile terminal 100 without receiving the digital content. For example, the image display device 200 can receive image data that the mobile terminal 100 is receiving or displaying from the mobile terminal 100 via short-range communication such as Bluetooth.

The mobile terminal 100 may correspond to a mobile digital media server (M-DMS) or a mobile digital media controller (M-DMC) on the DLNA protocol and the video display device 200 may correspond to a digital Media player (DMP) or digital media renderer (DMR).

Hereinafter, the function of the mobile terminal according to the embodiment of the present invention for controlling the image display device to display the designated image will be described in more detail.

The camera 121 photographs the target device.

The broadcast receiving module 111 receives a broadcast signal through a broadcast channel. The mobile communication module 112 or the wireless Internet module 113 may receive the content data through a content channel such as an IPTV channel.

The control unit 180 searches a database stored in the memory 160 or an external database accessible through the wireless communication unit 110 to search for a target device matching the image of the target device. In particular, in searching for a target device, the control unit 180 may collate the image of the photographed target device with the front view of the target device stored in the database. For such image matching, a known computer graphics processing technique capable of determining the similarity between images such as a contour detection technique can be used.

If the target device is found in the database search, the control unit 180 identifies (identifies) the found image display device 200 on the DLNA network and transmits the broadcast channel information displayed by the mobile terminal 100 to the wireless communication unit 110 or the short-range communication module 114 to the target device.

2 to 4, the target device may directly receive and display the video signal or the video data of the broadcast channel, or may receive the video signal or the video data of the broadcast channel from the mobile terminal 100 through short- Image data may be received and displayed. In the latter case, the mobile terminal 100 may control the short-range communication module 114 to transmit the video data of the broadcast channel to the target device. The short range communication module 114 may include a Bluetooth module. In this case, the mobile terminal 100 and the target device can be connected through Bluetooth pairing.

8 is a flowchart illustrating a video call method according to an embodiment disclosed herein.

Referring to FIG. 8, the mobile terminal 100 captures an image displayed by the target device (S810).

In step S830, the mobile terminal 100 searches for a broadcast channel currently broadcasting the photographed image in real time while switching the broadcast channel. At this time, the mobile terminal 100 can collate the photographed image with the broadcasting channel image currently being broadcasted.

If the broadcast channel in which the photographed image is currently broadcast is found (S850), the mobile terminal 100 displays the found broadcast channel image (S870). In this case, the mobile terminal 100 may store the found broadcast channel in the favorites list.

 If the broadcast channel currently broadcasting the photographed image is not found (S850), the mobile terminal 100 receives and displays the image displayed by the target device (S890).

The method according to the embodiments disclosed herein may be understood as similar to that described with reference to Figs. 1 to 7 with respect to the mobile terminal according to the embodiments disclosed in the above description, and thus the detailed description will be omitted.

Further, according to the embodiment disclosed herein, 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 mobile terminal described above can be applied to not only the configuration and method of the embodiments described above but also all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments It is possible.

The embodiments disclosed herein have been described with reference to the accompanying drawings.

Here, 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 disclosed in the present specification.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only examples described in the present specification, and not all of the technical ideas disclosed in the present specification are described. Therefore, various modifications It is to be understood that equivalents and modifications are possible.

100: mobile terminal 110: wireless communication unit
120: A / V input unit 130: user input unit
140: sensing unit 150: output unit
160: memory 170: interface section
180: control unit 190: power supply unit

Claims (5)

A step of photographing an image displayed by the first image display device;
Performing a real time search for a broadcast channel in which the photographed image is currently being broadcast, while switching a broadcast channel;
Storing the found broadcast channel if a broadcast channel in which the photographed image is currently broadcast is found;
Searching a second video display device for displaying a broadcast channel image of the first video display device; And
And transmitting information related to the broadcast channel so that the second video display device can display the found broadcast channel image when the second video display device is searched,
Wherein the step of searching for the second video display device comprises:
Photographing the second video display device; And
And searching and confirming an image display device having the same form as that of the second image display device based on the image of the second image display device. The method according to claim 1,
Wherein the step of real-time searching for the broadcast channel is to collate the photographed image with a broadcast channel image currently being broadcasted. delete A camera for photographing the image displayed by the first image display device or photographing the second image display device;
A broadcast receiving module for receiving a broadcast signal of an image displayed by the first video display device through a broadcast channel;
The broadcast channel is switched and the broadcast channel in which the shot image is currently broadcast is searched in real time, and when the broadcast channel in which the shot image is currently broadcast is found,
The second image display device is searched and the image display device having the same form as that of the second image display device is searched based on the image of the second image display device, And a controller for transmitting information related to the broadcast channel to the second video display device so as to display the video of the found broadcast channel. 5. The method of claim 4,
Wherein the control unit verifies the captured image and the broadcast channel image currently being broadcast to each other in real time searching for the broadcast channel.

Images