KR20120052756A - Method for displaying video in home network and mobile terminal using this method - Google Patents

Abstract

PURPOSE: An image display method in home networks and portable terminal using the same are provided to transmit and receive image content data or image content information by identifying electronic apparatuses of captured images on home networks. CONSTITUTION: A portable terminal captures images displayed by a target apparatus(S810). The portable terminal searches broadcast channels including the captured images in real time by changing the broadcast channels(S830). When the broadcast channels are discovered, the portable terminal displays images of the discovered broadcast channels(S850,S870). When the broadcast channels are not discovered, the portable terminal receives the images displayed by the target apparatus(S890).

Description

TECHNICAL FOR DISPLAYING VIDEO IN HOME NETWORK AND MOBILE TERMINAL USING THIS METHOD}

The present disclosure relates to a terminal, and more particularly, to an image display method and a mobile terminal using the same.

Terminals may be divided into mobile / portable terminals and stationary terminals according to their mobility. The mobile terminal may be further classified into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

As the functions are diversified, for example, the terminal is implemented in the form of a multimedia player having complex functions such as taking a picture or a video, playing a music or a video file, playing a game, and receiving a broadcast. . In order to support and increase the function of such a terminal, it may be considered to improve the structural part and / or the software part of the terminal.

Recently, a terminal is connected to another electronic device through a home network, and provides a function of transmitting and receiving data with another electronic device. For example, the terminal may retrieve and display image content stored in another electronic device. To this end, the terminal needs to obtain information about image content from another electronic device. In this process, the user has to make complicated settings regarding the connection between the terminal and other electronic devices.

It is an object of the present invention to provide a video display method and a mobile terminal using the same that allows a user to enjoy the image between the terminal and other electronic devices in a more convenient manner.

According to an embodiment of the present disclosure, an image display method according to an embodiment of the present disclosure includes the steps of capturing an image displayed by a target device and a broadcast channel on which the photographed image is currently being broadcast while switching broadcasting channels. Searching for a channel in real time; if a broadcast channel on which the photographed image is currently broadcast is found; displaying the found broadcast channel image; and if a broadcast channel on which the photographed image is currently broadcast is not found, And receiving and displaying an image displayed by the target device.

According to an embodiment of the present disclosure, a mobile terminal includes a display unit, a camera for capturing an image displayed by a target device, a broadcast receiving module for receiving a broadcast signal through a broadcast channel, and a mobile terminal. Switching the broadcast channel to search for a broadcast channel on which the captured image is currently being broadcast, and if the broadcast channel on which the captured image is currently broadcast is found, displays the found broadcast channel image on the display unit; And a controller configured to receive an image displayed by the target device and display the image displayed on the display unit if a 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 in the present specification, the electronic device shown in the image taken by the camera provided in the mobile terminal on the home network, and the identified electronic By transmitting and receiving image content information or image content data with a device, a user can enjoy viewing images between the terminal and other electronic devices in a more convenient manner.

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

DETAILED DESCRIPTION Hereinafter, exemplary embodiments disclosed herein will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, 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 the mobile terminal

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant, a portable multimedia player (PMP), navigation, and the like. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

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 A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential, so that 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 a broadcast signal 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. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, etc. may be used.

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, the A / V 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 call mode or the photographing mode. The processed image frame may 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 according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into 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. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), 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 may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. 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 a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays photographed and / or received images, a UI, and a GUI.

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

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. 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 configured as a light transmissive structure. With this structure, the user can see the 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 one another, and may be disposed on different surfaces, respectively.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be used in addition to an output device. Can also be used as an input device. The touch sensor may have, for example, a form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or 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 then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of a mobile terminal surrounded by the touch screen or near 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 an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.

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

The sound 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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. 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 sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an 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 151 and 152 may be classified as part of the alarm unit 153.

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

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through an injection or inlet port, grazing to the skin surface, contact of an electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

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. Two or more haptic modules 154 may be provided according to configuration aspects of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 160 may store data relating to various patterns of vibration and sound output when a touch input on the touch screen is performed.

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), RAM random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic It may include a storage medium of at least one type of disk, 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 with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various types of information for authenticating the use authority of the mobile terminal 100. The identification module includes a user identify module (UIM), a subscriber identify module (SIM), and a universal user authentication module ( 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.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered 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, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented 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 include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs). It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. In some cases, the embodiments described herein may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

How to handle 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 manipulation units may also be referred to collectively as a manipulating portion, and may be employed in any manner as long as the user is tactile in the manner of tactile feeling.

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 in an entire area or may be operated in a divided manner. 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 output or input of information, respectively. In the input window, a softkey displaying a number for inputting a telephone number or the like may be output. When the softkey is touched, a number or the like corresponding to the touched softkey is displayed in the output window. When the operation unit is operated, call connection to the telephone number displayed in the output window may be attempted or text displayed in the output window may be input to the application.

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

In response to the display unit 151 (touch screen) and the touch pad being touched together within a predetermined time range, one function of the terminal may be executed. 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. For example, the function may be activation or deactivation of the display unit 151 or the touch pad.

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

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

DLNA

The Digital Living Network Alliance (DLNA) Protocol is a protocol or interoperability guidelines that allows electronic devices in the home to connect to the home network and share digital content. Home network technologies include technologies that make up a physical network, such as Ethernet, Home Phoneline Networking Alliance (HomePNA), Radio Frequency (RF), and Power Line Communication (PLC), and communication between devices, sensors, and actuators that make up a home network. It consists of protocol technology, middleware technology for mutual discovery, configuration, and management between devices on the configured home network, and service technologies based on such middleware.

Digital home is the development of the idea that computers, home appliances, and mobile devices in a home collaborate through wired and wireless networks to share digital content. Digital living extends this idea further, enabling on-the-go sharing of digital content across electronics regardless of manufacturer.

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

DLNA certified device class

The Home Network Devices class includes Digital Media Server (DMS), Digital Media Player (DMP), Digital Media Renderer (DMR), and Digital Media Controller. DMC) and Digital Media Printer (DMPr).

A digital media server (DMS) stores content and provides the content to digital media players (DMPs) and digital media renderers (DMRs) connected to a network. Digital media servers (DMS) also protect the stored content. Examples of digital media servers (DMSs) include personal computers (PCs) and network attached storage (NAS).

The digital media player (DMP) discovers content present in the digital media server (DMS) and provides a function of playing or rendering the content. 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), which discovers the content at the digital media server (DMS). Examples of digital media renderers (DMRs) include TVs, A / V receivers, video displays, remote speakers for music, and the like.

The digital media controller (DMC) discovers the contents existing in the digital media server (DMS) and plays them in the digital media renderer (DMR). Examples of digital media controllers (DMCs) include Internet tablets, Wi-Fi enabled digital cameras and personal digital assistants (PDAs).

Digital media printers (DMPr) provide printing services for DLNA home networks. Generally, a digital media player (DMP) and a digital media controller (DMC) with a print function print to a digital media printer (DMPr). Examples of digital media printers (DMPr) include photo printers connected to a network and all-in-one printers connected to a network.

The Mobile Handheld Devices class includes Mobile Digital Media Server (M-DMS), Mobile Digital Media Player (M-DMP), and Mobile Digital Media Uploader. Uploader (M-DMU), Mobile Digital Media Downloader (M-DMD), and Mobile Digital Media Controller (M-DMC) are included.

The mobile digital media server (M-DMS) stores content and provides the 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 and portable music players.

The mobile digital media player (M-DMP) discovers and plays the content existing in the digital media server (DMS) or the 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 and mobile phones.

The mobile digital media downloader (M-DMD) discovers and stores (downloads) content on 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 and mobile phones.

The mobile digital media controller (M-DMC) discovers 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-DMCs) include PDAs and mobile phones.

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 an intermediary function between the mobile handheld device network connection and the home network connection.

The Media Interoperability Unit (MIU) provides content conversion between media formats required for home networks and mobile handheld devices.

How DLNA certified devices work

The first example in which a DLNA certified device operates is to discover and play movie content. Movie content is stored in NAS, digital media server (DMS) and the like. Instead of watching a movie on a small PC monitor, users can use the Digital Media Player (DMP) feature of a large screen TV, a DLNA-certified device, to discover movie content on the NAS and play it on the large screen TV.

A second example in which a DLNA certified device works is to send and display a picture. The user may transmit and display a picture stored in a digital camera, which is an authorized 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 that is an authenticated digital media server (DMS). Using a PDA, an authorized mobile digital media controller (M-DMC), users can find the song they want on their PC and send it to DLNA-certified wireless speakers for playback. In this case, the speaker provides an authorized digital media renderer (DMR) function.

The fourth example in which the DLNA authentication device operates is to upload a picture. When a picture is stored in a PDA which is an authenticated mobile digital media uploader (M-DMU), a user may transfer and store the picture stored in the PDA to a NAS which is an authenticated digital media server (DMS).

The fifth example in which the DLNA authentication device operates is to download music content. A user can transfer music content from a PC, which is an authenticated digital media server (DMS), 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 send and print a picture. Users can print photos stored on the camera phone, which is an authorized mobile digital media controller (M-DMC), to a printer that is an authenticated digital media printer (DMPr) using the Wi-Fi function that the camera phone supports. Can be.

Image display method in home network and mobile terminal using same

According to at least one exemplary embodiment of the present disclosure, an image display method includes: identifying an electronic device displayed on an image captured by a camera provided in a mobile terminal on a home network, and identifying the identified electronic device and image content information. In addition, the present invention provides a method for allowing a user to enjoy viewing images between a terminal and another electronic device in a more convenient manner by transmitting and receiving image content data.

Hereinafter, for convenience of description, the mobile terminal 100 according to at least one embodiment disclosed herein may share digital content with another electronic device (eg, the video display device 200) according to the DLNA protocol, or It is assumed that digital information related information is transmitted and received. However, the configuration in which the mobile terminal 100 operates according to the DLNA protocol is only for describing one embodiment disclosed in the present specification, and the technical spirit of at least one embodiment disclosed herein is not limited to the embodiment. Care must be taken.

That is, the mobile terminal 100 according to at least one embodiment disclosed herein transmits and receives digital data with other electronic devices according to all possible 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 with other electronic devices according to a home network technology based on a wireless local area network equipped with device discovery and device management mechanisms. You may.

2, 3 and 4 are exemplary views illustrating a process of displaying a display image of an image display apparatus by a mobile terminal according to one embodiment disclosed herein. 2, 3, and 4, the image display device 200 may be a digital TV.

Referring to FIG. 2, the video display device 200 may include content providers such as a terrestrial broadcaster 300, a cable TV broadcaster (not shown), a DMB broadcaster (not shown), and an IPTV server 400. You can receive digital content from your provider and display it. In FIG. 2, the video display device 200 displays a broadcast video of 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, an IPTV broadcast / content channel, and the like.

To this end, the mobile terminal 100 captures the broadcast image displayed by the image display device 200 using the camera 121 and broadcasts the same image as the captured image (that is, the captured image). The broadcast channel currently broadcasting the video) can be searched in real time. The real-time search operation of the mobile terminal 100 may be initiated by a predetermined type of touch input on the display unit 151 (touch screen) (for example, a multi-touch input that opens a gap between touch points).

Referring to FIG. 3, the mobile terminal 100 that finds a broadcast / content channel displayed by the video display device 200 is a terrestrial broadcaster 300 and a cable TV broadcaster (not shown) according to the corresponding broadcast / content channel information. , Digital content may be received from a content provider such as a DMB broadcasting station (not shown), an IPTV server 400, and displayed.

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

Referring to FIG. 4, unlike FIG. 3, the mobile terminal 100 may receive the digital content through the image display device 200 without directly receiving the digital content from the content provider. For example, the mobile terminal 100 may receive image data displayed or displayed by the image display device 200 from the image display device 200 through short-range communication such as Bluetooth.

As described above, the image display device 200 may correspond to a digital media server (DMS) or a digital media controller (DMC) on a DLNA protocol, and the mobile terminal 100 may be a mobile digital media player (M−) on a DLNA protocol. DMP).

Hereinafter, the function of the mobile terminal to perform a video call through the television receiver according to an embodiment disclosed herein 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 content data through a content channel such as an IPTV channel.

The controller 180 searches for a broadcast / content channel in which the captured image is currently broadcasted while switching broadcast / content channels. In particular, in searching for a broadcast / content channel in real time, the controller 180 may contrast the photographed video with the broadcast / content channel video currently being broadcast. In the image contrast, a known computer graphics processing technique capable of determining similarity between images, such as an edge detection technique, may be used.

If a broadcast channel on which the captured image is currently broadcast is found, the controller 180 displays the found broadcast channel image on the display unit 151. In addition, the controller 180 may store the found broadcast channel in a favorite list.

If a broadcast channel currently broadcasting the captured image is not found, the controller 180 can receive the image displayed by the target device and display the image on the display unit.

In this case, as described with reference to FIGS. 2 to 4, the controller 180 may control the broadcast receiving module 111 to receive the video signal or the video data of the broadcast channel.

Alternatively, the controller 180 may control the short range communication module 114 to receive image 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 may be connected through Bluetooth pairing.

5, 6, and 7 are exemplary diagrams illustrating a process of controlling, by the mobile terminal, to display a designated image by a mobile terminal according to an exemplary embodiment disclosed herein. 5, 6, and 7, the image display device 200 may be a digital TV.

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

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

The database may include specification information of an image display device, data such as a front view, a rear view, a left view, a right view, a top view, 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 may be configured in the form of an external device accessible through the wireless communication unit 110. The mobile terminal 100 that identifies the image display device 200 through a database search is the image display device on which the electronic device is photographed through form information such as specification information or a front view provided by electronic devices connected through a home network. It may be determined whether or not (200).

The mobile terminal 100 identifying the video display device 200 through a database search identifies (identifies) the identified video display device 200 on a DLNA network, and the mobile terminal is connected to the identified video display device 200. The broadcast / content channel information indicated by 100 is transmitted.

Referring to FIG. 6, the video display device 200 may include a terrestrial broadcaster 300, a cable TV broadcaster (not shown), a DMB broadcaster (not shown), and the like, according to the corresponding broadcast / content channel information received from the mobile terminal 200. Digital content may be received from a content provider such as IPTV server 400 and displayed.

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

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

As described above, the mobile terminal 100 may correspond to a mobile digital media server (M-DMS) or a mobile digital media controller (M-DMC) on a DLNA protocol, and the image display device 200 may be a digital on a DLNA protocol. It may correspond to a media player (DMP) or a digital media renderer (DMR).

Hereinafter, a function of controlling the mobile terminal to display a designated image by the mobile terminal according to an exemplary embodiment disclosed herein 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 content data through a content channel such as an IPTV channel.

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

If the target device is found in the database search, the controller 180 checks (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.

In this case, as described with reference to FIGS. 2 to 4, the target device may directly receive and display the video signal or the video data of the broadcast channel, and may transmit the broadcast channel from the mobile terminal 100 through local area communication. 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 image 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 may 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 in operation S810.

In operation S830, the mobile terminal 100 searches for a broadcast channel on which the captured image is currently broadcast while switching the broadcast channel. In this case, the mobile terminal 100 may contrast the captured image with the broadcast channel image currently being broadcast.

If a broadcast channel on which the captured 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 a favorite list.

 If a broadcast channel currently broadcasting the captured 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 exemplary embodiments disclosed herein may be understood similarly to the mobile terminal according to the exemplary embodiments disclosed herein as described with reference to FIGS. 1 to 7, and thus the detailed description thereof will be omitted.

In addition, according to one embodiment disclosed herein, the above-described method may be implemented as code that can be read by a processor in a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet). Include.

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.

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

Here, the terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, but should be interpreted as meanings and concepts corresponding to the technical spirit disclosed in the present specification.

Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only one embodiment disclosed in the present specification, and do not represent all the technical ideas disclosed in the present specification. It should be understood that there may be equivalents and variations.

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 unit
180: control unit 190: power supply unit

Claims (5)

Photographing an image displayed by the target device;
Searching for a broadcast channel on which the captured image is currently being broadcast while switching broadcast channels;
If a broadcast channel on which the captured image is currently broadcast is found, displaying the found broadcast channel image; And
And receiving and displaying the image displayed by the target device if the broadcast channel on which the captured image is currently broadcast is not found. The method of claim 1,
The searching of the broadcast channel in real time may include comparing the captured image with a broadcast channel image currently being broadcast. The method of claim 1,
And if the broadcast channel on which the captured image is currently broadcast is found, storing the found broadcast channel in a favorite list. A display unit;
A camera for capturing an image displayed by the target device;
A broadcast receiving module receiving a broadcast signal through a broadcast channel;
While switching the broadcast channel, the broadcast channel on which the captured image is currently broadcast is searched in real time, and if the broadcast channel on which the captured image is currently broadcast is found, the found broadcast channel image is displayed on the display unit. And a controller configured to receive an image displayed by the target device and display the image displayed on the display unit if a broadcast channel on which the captured image is currently broadcast is not found. The method of claim 4, wherein
The control unit, in real-time search for the broadcast channel, characterized in that the mobile terminal contrasts the captured video with the broadcast channel image currently being broadcast.

Images