KR101608776B1 - Mobile and method for controlling the same - Google Patents

Abstract

The present invention provides a mobile terminal that removes a margin area from the broadcast image when the broadcast image including the margin area is received and expands the broadcast image from which the margin area is removed to fill the broadcast playback screen of the mobile terminal, And a control method thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a mobile terminal and a control method thereof,

The present invention relates to a mobile terminal and a control method thereof, in which usage of a terminal can be realized by further considering convenience of a user.

A terminal such as a personal computer, a notebook computer, a mobile phone, or the like can be configured to perform various functions. Examples of such various functions include a data and voice communication function, a function of photographing a video or a moving image through a camera, a voice storage function, a music file playback function through a speaker system, and an image or video display function. Some terminals include additional functions to execute games, and some other terminals are also implemented as multimedia devices. Moreover, recent terminals can receive a broadcast or multicast signal to view a video or television program.

In general, The mobile terminal can be divided into a mobile terminal and a stationary terminal depending on whether the mobile terminal is portable or not, and the mobile terminal can be divided into a handheld terminal and a vehicle mount terminal ).

Efforts are continuing to support and enhance the functions of terminals. The foregoing efforts include not only changes and improvements in structural components that form the terminal, but also improvements in software or hardware.

The above mobile terminal provides a broadcasting function.

That is, it receives a broadcasting signal transmitted from a broadcasting center, demultiplexes and decodes the received broadcasting signal, and reproduces the broadcasting signal on the screen.

However, the images in the broadcasting signal transmitted from the broadcasting center are different in size from each other.

That is, when a broadcast image including the margin area is displayed on the mobile terminal, the image in the broadcasting signal transmitted from the broadcasting center includes a blackened margin area. Therefore, There is a problem that it is displayed small on the screen.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for displaying a broadcast image on a mobile terminal by removing a margin area from the broadcast image when the broadcast image including the margin area is received, And a control method thereof.

According to an aspect of the present invention, there is provided a mobile terminal including: a wireless communication unit for receiving a broadcast signal including a blank area; A display unit for displaying an image in the received signal; And a control unit for identifying and removing a margin area included in the video in the received broadcast signal, and displaying the removed video image on the broadcast playback screen of the display unit.

The mobile terminal according to the present invention may further include a memory provided with a color mask for discriminating a blank area included in an image in the broadcast signal, wherein the controller collates the color mask with the image, It is possible to determine the margin area included in the area. The color mask may be the same size as the broadcast playback screen.

In addition, the controller may display information indicating that the image is expanded in the extended image and information indicating a ratio of the expanded image.

According to another aspect of the present invention, there is provided a method of controlling a mobile terminal, including: receiving a broadcast signal including a blank area; Determining a margin area included in the image by collating the image in the received broadcast signal with the prepared color mask; Removing the determined blank area; And enlarging and displaying an image in which the margin area is removed so as to be displayed on the entire broadcasting reproduction screen.

The mobile terminal and its control method according to the present invention can easily determine the size of an actual effective image excluding a margin area in a broadcast image using a color mask, And there is an effect that the valid screen can be enlarged and displayed so as to fill the broadcast reproduction screen.

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

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

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

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a distance sensor 182, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

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

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

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

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

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) A digital broadcasting system such as DVB-CB, OMA-BCAST, or Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

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

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal, or a text / multimedia message transmission / reception.

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

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module. According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites, and then applies trigonometry to the calculated information to obtain a three-dimensional string of latitude, longitude, The location information can be accurately calculated. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time.

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 supports a zoom function of an image and processes an image frame such as a still image or a moving image obtained by the image sensor in a video communication mode or a 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. This will be discussed later in connection with touch screens.

The output unit 150 is for generating an output relating to visual, auditory or tactile sense and includes a display unit 151, an acoustic output module 152, an alarm unit 153, a haptic module 154, 155, and the like.

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

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

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller (not shown). 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.

The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in the vicinity of the touch screen, which is enclosed by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

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

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

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

The sound output module 152 may receive audio data stored in the memory 160 or received from the wireless communication unit 110 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. In this case, the display unit 151 and the sound / voice output module 152 may be a kind of the alarm unit 153. The display unit 151 and the sound / . ≪ / RTI >

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 projector module 155 is a component for performing an image project function using the mobile terminal 100 and is similar to the image displayed on the display unit 151 in accordance with a control signal of the controller 180 Or at least partly display another image on an external screen or wall.

Specifically, the projector module 155 includes a light source (not shown) that generates light (for example, laser light) for outputting an image to the outside, a light source And a lens (not shown) for enlarging and outputting the image at a predetermined focal distance to the outside. Further, the projector module 155 may include a device (not shown) capable of mechanically moving the lens or the entire module to adjust the image projection direction.

The projector module 155 can be divided into a CRT (Cathode Ray Tube) module, a LCD (Liquid Crystal Display) module, a DLP (Digital Light Processing) module, and a scanner module according to the type of the display means. In particular, the DLP module may be advantageous for miniaturization of the projector module 151 by enlarging and projecting an image generated by reflecting light generated from a light source on a DMD (Digital Micromirror Device) chip. In addition, the scanner module reflects the light generated from the light source in the horizontal and / or vertical directions and performs a raster scan on an external screen. At this time, if the projector module 155 is a scanner module, the lens for the enlarged output may be omitted.

Preferably, the projector module 155 may be provided longitudinally on the side, front or back side of the mobile terminal 100. It goes without saying that the projector module 155 may be provided at any position of the mobile terminal 100 as occasion demands.

The memory 160 may store a program for processing and controlling the control unit 180 and may store programs for inputting / outputting data (e.g., telephone directory, message, audio, still image, electronic book, It may also perform functions for temporary storage. The memory unit 160 may also store the frequency of use of each of the data (for example, each telephone number, each message, and frequency of use for each multimedia). In addition, the memory unit 160 may store data on vibration and sound of various patterns output when the touch is input on the touch screen.

In addition, the memory 160 according to the present invention is provided with a color mask for discriminating a blank area included in the broadcast image received from the broadcast receiving module 111. [ At this time, the color of the mask is the same as the processed color in the margin area, and the size of the color mask is the same as the size of the area in which the substantial effective image is displayed in the broadcast reproduction screen of the display unit 151.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, an SD or XD memory A static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM) Magnetic disk, magnetic disk, magnetic disk, or optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

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

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

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

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

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

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

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

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

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

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

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

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

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

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion.

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

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

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

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

A flash 123 and a mirror 124 may be additionally disposed adjacent to the camera 121 '.

The flash 123 is a light emitting element that emits light of predetermined intensity, and emits light toward a subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

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

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

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

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may be of a light transmission type for the display unit 151. [ In this case, if the display unit 151 is configured to output the time information on both sides (i.e., in the directions of both the front and back sides of the mobile terminal), the time information can be recognized through the touch pad 135 do. The information output on both sides may be all controlled by the touch pad 135. [

Meanwhile, the display for exclusive use of the touch pad 135 may be separately installed, so that the touch screen may be disposed in the rear case 102 as well.

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

Hereinafter, embodiments related to a control method that can be implemented in the mobile terminal will be described with reference to the accompanying drawings.

The following embodiments can be implemented more easily when the display unit 151 is configured as a touch screen. Hereinafter, it is assumed that the display unit 151 is a touch screen.

FIG. 3 is a flowchart illustrating an operation of removing a blank area and expanding a broadcast image included in a broadcast image of the mobile terminal according to the present invention.

3, when a broadcast signal is received from an external broadcasting center through the broadcast receiving module 111 (S111), the control unit 180 determines whether the color mask included in the memory 160 A broadcast image is collated to determine whether a blank area exists in the broadcast image (S112). At this time, the color mask has the same size and aspect ratio as the broadcast playback screen displayed on the display unit 151.

That is, the control unit 180 collates the broadcast images with masks having various colors provided in the memory 160, and if the same color as the color masks exists in the broadcast image, Is included.

For example, if there is a mask of "black" color among the masks and a blank region of "black" exists in the broadcast image, the controller 180 controls the color mask of the " And discriminates the "black" blank area excluding the actual effective image in the broadcast image.

As described above, if it is determined that there is a blank area having the same color as the color mask in the broadcast image (S113), the controller 180 determines whether the blank area excluding the effective image in the broadcast image And removes the blank area on the broadcast image (S114).

Then, the control unit 180 enlarges the size and the aspect ratio of the broadcast image from which the margin area has been removed to be equal to the size of the color mask (S115). Then, the expanded broadcast image is displayed on the display unit 151 And displays it on the screen (S116).

At this time, the controller 180 may display a first identifier for informing the user that the broadcast image is expanded in the extended broadcast image, and a second identifier indicating the aspect ratio of the expanded broadcast image.

Hereinafter, the process of eliminating a blank area and expanding a broadcast image included in the broadcast image of the controller 180 will be described in detail with reference to FIG. 4 to FIG.

FIGS. 4 to 7 are screen state diagrams illustrating a marginal area removal process and a broadcast image extension display process included in the broadcast image of the mobile terminal according to the present invention.

4 (a) shows a broadcast image 10 composed of a blank area 12 of "black" at the edges of the valid image 11 and the valid image 11. As shown in FIG. 4B shows a color mask 20 of "black" for discriminating the blank area 12 included in the broadcast image 10 shown in FIG. 4A.

4 (c), when the broadcast image 10 as shown in FIG. 4 (a) is received through the broadcast receiving module 111, the control unit 180 transmits the broadcast image 10 And the color mask 20 to discriminate the blank area 12 existing at the edge of the broadcast image 10 and remove the blank area 12 from the broadcast image 10.

4 (d), the control unit 180 determines whether the valid image 11 in which the blank region 12 has been removed from the broadcast image 10 is positioned at the center of the color mask 20 The size of the effective image 11 is expanded to be the same as that of the color mask 20 and the expanded effective image 11 is displayed on the display unit 151 as shown in FIG. On the broadcast playback screen.

Next, FIG. 5A shows a broadcast image 10 produced with a 16: 9 aspect ratio by performing a margin 12 process of "black" on the upper side and the lower side of the effective video 11 . 5B shows a color mask 20 of "black" for discriminating the blank area 12 included in the broadcast image 10 shown in FIG. 5A.

5 (a) is received through the broadcast receiving module 111, the control unit 180 receives the broadcast image 10 as shown in (c) of FIG. 5, And the color mask 20 to discriminate a blank area 12 existing above and below the broadcast image 10 and remove the blank area 12 from the broadcast image 10.

5 (d), the controller 180 determines whether the valid image 11 in which the blank region 12 has been removed from the broadcast image 10 is positioned at the center of the color mask 20 The size of the effective image 11 is enlarged to be the same as that of the color mask 20 and the extended effective image 11 is enlarged to be displayed on the display unit 151 as shown in FIG. On the broadcast playback screen.

6 (a) shows a broadcast image 10 produced at a 4: 3 aspect ratio by performing a margin 12 process of "black" on the left and right sides of the effective video 11 . 6B shows a color mask 20 of "black" for discriminating the blank area 12 included in the broadcast image 10 shown in FIG. 6A.

6 (a) through the broadcast receiving module 111, the control unit 180 transmits the broadcast image 10 (FIG. 6 (c) And the color mask 20 to discriminate the blank areas 12 existing on the left and right sides of the broadcast image 10 and remove the blank areas 12 from the broadcast image 10.

6 (d), the controller 180 determines whether the valid image 11 in which the blank region 12 has been removed from the broadcast image 10 is positioned at the center of the color mask 20 The size of the effective image 11 is enlarged to be the same as that of the color mask 20 and the extended effective image 11 is displayed on the display unit 151 as shown in FIG. On the broadcast playback screen.

7 shows a first identifier 30 informing the user that the valid video 11 is extended in the valid video 11 and a second identifier 40 informing the user of the current screen ratio of the extended valid video .

As described above, the embodiments of the present invention can be implemented as computer readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer-readable medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . In addition, the computer may include a control unit 180 of the mobile terminal 100.

The above-described mobile terminal and its control method are not limited to the configuration and method of the above-described embodiments, but the embodiments may be modified such that all or some of the embodiments are selectively And may be configured in combination.

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

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

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

FIG. 3 is a flowchart illustrating an operation of removing a blank area and expanding a broadcast image included in a broadcast image of the mobile terminal according to the present invention.

FIGS. 4 to 7 are screen state diagrams illustrating a marginal area removal process and a broadcast image extension display process included in the broadcast image of the mobile terminal according to the present invention.

Claims (5)

A wireless communication unit for receiving a broadcast signal including a blank area; A display unit for displaying an image in the received signal; A memory having a color mask for discriminating a margin area included in an image in the broadcast signal; And Wherein the color mask is collated with the image to discriminate and remove a blank area included in the image, expand the size of the image from which the blank area is removed to be equal to the size of the color mask, And displaying on the broadcast reproduction screen. delete delete The method according to claim 1, Wherein the control unit displays information indicating that the image is expanded in the extended image and information indicating a ratio of the expanded image. Receiving a broadcast signal including a blank area; Identifying a blank area included in the image by collating the image in the received broadcast signal with a color mask provided for discriminating the blank area included in the image in the received broadcast signal; Removing the determined blank area; Expanding the image from which the blank area is removed to have the same size as the color mask; And And displaying the extended image on a broadcasting reproduction screen.

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