KR20180052947A - Display device - Google Patents

Abstract

According to an embodiment of the present invention, a display device comprises: a display unit; an external device interface unit for receiving an image signal from a set-top box connected to the display device; and a control unit for displaying a broadcasting image of a changed broadcasting channel based on the image signal received from the set-top box when a broadcasting channel is changed, recognizing the channel number of the broadcasting image by using the displayed broadcasting image, and displaying broadcasting information related to the recognized channel number on the display unit.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device, and more particularly, to a display device capable of recognizing a channel number of a broadcast program when viewing a broadcast program provided from a set-top box connected to the display device.

Digital TV services using wired or wireless communication networks are becoming popular. The digital TV service can provide various services that can not be provided by the existing analog broadcasting service.

For example, in the case of IPTV (Internet Protocol Television), a smart TV service, which is a kind of digital TV service, a bidirectionality is provided so that a user can actively select a type of viewing program and a viewing time. IPTV and smart TV services can provide various additional services such as Internet search, home shopping, online games and the like based on the bidirectionality.

The TV may be connected to a set-top box to provide a broadcast program input from the set-top box.

However, although the TV can acquire the electronic program guide (EPG) information from the set-top box, the user can not know the channel number of the program currently being watched.

The TV could not know the channel number of the broadcast program and could not recommend another channel to the user or provide information about the channel of the broadcast program.

Accordingly, the user can not use the functions related to the channel or the broadcasting program provided by the TV using only the remote control of the set-top box without using the remote controller of the TV.

An object of the present invention is to provide a display device capable of recognizing a channel number of a broadcast program provided from a set-top box connected to a display device.

The present invention aims at providing broadcast information related to a channel number to a user by recognizing a channel number of a broadcast program provided from a set top box.

A display device according to an exemplary embodiment of the present invention includes a display unit, an external device interface unit for receiving an image signal from a set-top box connected to the display device, and a display unit for displaying the changed The control unit may display a broadcast image of a broadcast channel, recognize a channel number of the broadcast image using the broadcast image, and display broadcast information related to the recognized channel number on the display unit.

According to various embodiments of the present invention, a channel number of a broadcast program provided from a set-top box connected to a display device can be quickly recognized.

Also, according to the embodiment of the present invention, the user can receive various broadcast information such as channel recommendation information and broadcast program information that the TV itself can provide, using the recognized channel number.

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present invention.
2 is a block diagram of a remote control device according to an embodiment of the present invention.
3 shows an example of an actual configuration of a remote control apparatus according to an embodiment of the present invention.
4 shows an example of utilizing a remote control device according to an embodiment of the present invention.
5 is a diagram illustrating a configuration of a display system according to an embodiment of the present invention.
6 is a flowchart illustrating an operation method of a display apparatus according to an embodiment of the present invention.
7 and 8 are views for explaining an example of recognizing a channel number of a broadcast program currently being broadcast and providing related broadcast information according to an embodiment of the present invention.
9 to 15 are views for explaining a process of recognizing the number of a broadcast channel currently being watched according to an embodiment of the present invention.
16 is a block diagram illustrating a configuration of a control unit for recognizing the number of a broadcast channel according to an embodiment of the present invention.
17 is a flowchart illustrating a process of recognizing a channel number using a banner according to another embodiment of the present invention.
18 is a flowchart for explaining a process when the channel number is not recognized even through the main banner and the sub banner according to the embodiment of the present invention.

Hereinafter, embodiments 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 display device according to the embodiment of the present invention is an intelligent display device that adds a computer support function to a broadcast reception function, for example, and is equipped with a function of inputting a handwriting, a touch screen Or an interface that is more convenient to use than a space remote controller or the like. Also, it can be connected to the Internet and a computer by the support of a wired or wireless Internet function, and can perform functions such as e-mail, web browsing, banking or game. A standardized general-purpose OS can be used for these various functions.

Therefore, the display device described in the present invention can freely add or delete various applications, for example, on a general-purpose OS kernel, so that various user-friendly functions can be performed. More specifically, the display device may be, for example, a network TV, an HBBTV, a smart TV, an LED TV, an OLED TV, or the like, and may be applied to a smartphone as the case may be.

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present invention.

1, the display device 100 includes a broadcast receiver 130, an external device interface 135, a storage 140, a user input interface 150, a controller 170, a wireless communication unit 173, A display unit 180, an audio output unit 185, and a power supply unit 190.

The broadcast receiving unit 130 may include a tuner 131, a demodulation unit 132, and a network interface unit 133.

The tuner 131 can tune to a specific broadcast channel according to the channel tuning command. The tuner 131 may receive a broadcast signal for the selected broadcast channel.

The demodulator 132 can separate the received broadcast signal into a video signal, an audio signal, and a data signal related to a broadcast program, and can restore the separated video signal, audio signal, and data signal into a form capable of outputting.

The external device interface unit 135 may receive an application or application list in an adjacent external device and may transmit the received application or application list to the control unit 170 or the storage unit 140.

The external device interface unit 135 may provide a connection path between the display device 100 and an external device. The external device interface unit 135 may receive at least one of video and audio output from an external device connected to the display device 100 wirelessly or by wire, and may transmit the received video and audio to the controller 170. The external device interface unit 135 may include a plurality of external input terminals. The plurality of external input terminals may include an RGB terminal, one or more HDMI (High Definition Multimedia Interface) terminals, and a component terminal.

The video signal of the external device input through the external device interface unit 135 may be output through the display unit 180. [ The audio signal of the external device input through the external device interface unit 135 may be output through the audio output unit 185. [

The external device that can be connected to the external device interface unit 135 may be any one of a set top box, a Blu-ray player, a DVD player, a game machine, a sound bar, a smart phone, a PC, a USB memory and a home theater, .

The network interface unit 133 may provide an interface for connecting the display device 100 to a wired / wireless network including the Internet network. The network interface unit 133 can transmit or receive data to another user or another electronic device via the network connected thereto or another network linked to the connected network.

In addition, some content data stored in the display device 100 can be transmitted to another user registered in the display device 100 or a selected one of the other electronic devices or selected electronic devices.

The network interface unit 133 can access a predetermined web page through the connected network or another network linked to the connected network. That is, it is possible to access a predetermined web page through a network and transmit or receive data with the server.

The network interface unit 133 may receive content or data provided by the content provider or the network operator. That is, the network interface unit 133 can receive contents such as a movie, an advertisement, a game, a VOD, a broadcast signal, and related information provided from a content provider or a network provider through a network.

In addition, the network interface unit 133 can receive update information and an update file of the firmware provided by the network operator, and can transmit data to the Internet or a content provider or a network operator.

The network interface unit 133 can select and receive a desired application among applications open to the public via the network.

The storage unit 140 stores programs for signal processing and control in the controller 170, and can store image-processed video, audio, or data signals.

The storage unit 140 may perform a function for temporarily storing video, audio, or data signals input from the external device interface unit 135 or the network interface unit 133, It may also store information about the image.

The storage unit 140 may store a list of applications or applications input from the external device interface unit 135 or the network interface unit 133. [

The display apparatus 100 may reproduce and provide a content file (a moving picture file, a still picture file, a music file, a document file, an application file, etc.) stored in the storage unit 140 to a user.

The user input interface unit 150 may transmit a signal input by the user to the control unit 170 or may transmit a signal from the control unit 170 to the user. For example, the user input interface unit 150 may be implemented by various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, RF (Radio Frequency) communication, and infrared (IR) It is possible to receive and process control signals such as power on / off, channel selection, screen setting, and the like from the remote control device 200, or transmit control signals from the control unit 170 to the remote control device 200. [

The user input interface unit 150 may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 170.

The video signal processed by the controller 170 may be input to the display unit 180 and displayed as an image corresponding to the video signal. The video signal processed by the controller 170 may be input to the external output device through the external device interface 135. [

The audio signal processed by the control unit 170 may be output to the audio output unit 185 through audio. The voice signal processed by the control unit 170 may be input to the external output device through the external device interface unit 135.

In addition, the control unit 170 can control the overall operation in the display device 100. [

The control unit 170 may control the display device 100 according to a user command or an internal program input through the user input interface unit 150. The control unit 170 accesses the network and displays a list of applications or applications desired by the user, So that it can be downloaded into the portable terminal 100.

The control unit 170 can output the video or audio signal processed through the channel information selected by the user through the display unit 180 or the audio output unit 185.

The control unit 170 controls the operation of the external device through the external device interface unit 135 according to an external device video playback command received through the user input interface unit 150. For example, So that a video signal or a voice signal can be output through the display unit 180 or the audio output unit 185.

The control unit 170 may control the display unit 180 to display an image and may output the broadcast image input through the tuner 131 or the external input through the external device interface unit 135, The image input through the network interface unit or the image stored in the storage unit 140 may be displayed on the display unit 180. [ In this case, the image displayed on the display unit 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

In addition, the controller 170 may control the content stored in the display device 100, the received broadcast content, or external input content input from the outside to be reproduced, and the content may be a broadcast image, an external input image, , A still image, a connected web screen, and a document file.

The wireless communication unit 173 can perform communication with an external device through wired or wireless communication. The wireless communication unit 173 may perform short range communication with an external device. To this end, the wireless communication unit 173 may be a wireless communication unit such as a Bluetooth ™, a Radio Frequency Identification (RFID), an Infrared Data Association (IrDA), a UWB (Ultra Wideband), a ZigBee, (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The wireless communication unit 173 may communicate with the display device 100 and the wireless communication system through the wireless area networks or between the display device 100 and the other display device 100 or between the display device 100 and the display device 100. [ And can support wireless communication between networks in which the display device 100 (or an external server) is located. The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other display device 100 is a wearable device (e.g., a smartwatch, smart glass, etc.) capable of interchanging data with the display device 100 according to the present invention a smart glass, an HMD (head mounted display), or a smart phone. The wireless communication unit 173 can detect (or recognize) a wearable device that can communicate with the display device 100. When the detected wearable device is a device authenticated to communicate with the display device 100 according to the present invention, the control unit 170 controls the wireless communication unit 173 to transmit at least a part of the data processed in the display device 100 To the wearable device. Therefore, the user of the wearable device can use the data processed in the display device 100 through the wearable device.

The display unit 180 converts the video signal, the data signal, the OSD signal, the video signal, the data signal, and the like received from the external device interface unit 135 into R, G, and B signals, respectively, Signal can be generated.

On the other hand, the display device 100 shown in FIG. 1 is only an embodiment of the present invention. Some of the components shown may be integrated, added, or omitted depending on the specifications of the display device 100 actually implemented.

That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

1, the display apparatus 100 may include a tuner 131 and a demodulator 132 and may include a network interface unit 133 or an external device interface unit (not shown) 135 to reproduce the image.

For example, the display apparatus 100 may be divided into an image processing apparatus such as a set-top box for receiving broadcast signals or contents according to various network services, and a content reproducing apparatus for reproducing contents inputted from the image processing apparatus Can be implemented.

In this case, the operation method of the display device according to the embodiment of the present invention to be described below may be applied not only to the display device 100 as described with reference to FIG. 1, but also to the image processing device such as the separated set- 180, and an audio output unit 185. The content playback apparatus may be implemented by any one of the above-described content playback apparatuses.

Next, a remote control apparatus according to an embodiment of the present invention will be described with reference to Figs. 2 to 3. Fig.

FIG. 2 is a block diagram of a remote control apparatus according to an embodiment of the present invention, and FIG. 3 shows an example of an actual configuration of a remote control apparatus 200 according to an embodiment of the present invention.

2, the remote control apparatus 200 includes a fingerprint recognition unit 210, a wireless communication unit 220, a user input unit 230, a sensor unit 240, an output unit 250, a power supply unit 260 A storage unit 270, a control unit 280, and a voice acquiring unit 290. [0034]

Referring to FIG. 2, the wireless communication unit 225 transmits / receives a signal to / from any one of the display devices according to the embodiments of the present invention described above.

The remote control device 200 includes an RF module 221 capable of transmitting and receiving signals to and from the display device 100 according to the RF communication standard and is capable of transmitting and receiving signals with the display device 100 according to the IR communication standard And an IR module 223. In addition, the remote control device 200 may include a Bluetooth module 225 capable of transmitting and receiving signals with the display device 100 according to the Bluetooth communication standard. The remote control apparatus 200 is provided with an NFC module 227 capable of transmitting and receiving signals to and from the display apparatus 100 in accordance with a NFC (Near Field Communication) communication standard. In accordance with a WLAN (Wireless LAN) communication standard, And a WLAN module 229 that can send and receive signals to and from the device 100.

The remote control device 200 transmits a signal containing information on the motion and the like of the remote control device 200 to the display device 100 through the wireless communication unit 220.

On the other hand, the remote control device 200 can receive a signal transmitted from the display device 100 through the RF module 221 and can transmit power to the display device 100 via the IR module 223, Off, channel change, volume change, and the like.

The user input unit 230 may include a keypad, a button, a touch pad, or a touch screen. The user can input a command related to the display device 100 to the remote control device 200 by operating the user input unit 230. [ When the user input unit 230 has a hard key button, the user can input a command related to the display device 100 to the remote control device 200 through the push operation of the hard key button. This will be described with reference to FIG.

Referring to FIG. 3, the remote control apparatus 200 may include a plurality of buttons. The plurality of buttons include a fingerprint recognition button 212, a power button 231, a home button 232, a live button 233, an external input button 234, a volume control button 235, a voice recognition button 236, A channel change button 237, an OK button 238, and a back button 239. [

The fingerprint recognition button 212 may be a button for recognizing the fingerprint of the user. In one embodiment, the fingerprint recognition button 212 is capable of a push operation and may receive a push operation and a fingerprint recognition operation. The power button 231 may be a button for turning on / off the power of the display device 100. The home button 232 may be a button for moving to the home screen of the display device 100. The live button 233 may be a button for displaying a real time broadcast program. The external input button 234 may be a button for receiving an external input connected to the display device 100. The volume control button 235 may be a button for controlling the volume of the volume output by the display device 100. The voice recognition button 236 may be a button for receiving the user's voice and recognizing the received voice. The channel change button 237 may be a button for receiving a broadcast signal of a specific broadcast channel. The confirmation button 238 may be a button for selecting a specific function, and the back button 239 may be a button for returning to a previous screen.

Fig. 2 will be described again.

When the user input unit 230 has a touch screen, the user can touch a soft key of the touch screen to input a command related to the display device 100 to the remote control device 200. [ In addition, the user input unit 230 may include various types of input means such as a scroll key, a jog key, and the like that can be operated by the user, and the present invention does not limit the scope of the present invention.

The sensor unit 240 may include a gyro sensor 241 or an acceleration sensor 243 and the gyro sensor 241 may sense information on the motion of the remote control device 200. [

For example, the gyro sensor 241 may sense information about the operation of the remote control device 200 on the basis of the x, y, and z axes, and the acceleration sensor 243 may sense the movement speed of the remote control device 200 And the like can be sensed. The remote control device 200 may further include a distance measuring sensor to sense the distance from the display unit 180 of the display device 100. [

The output unit 250 may output an image or voice signal corresponding to the operation of the user input unit 235 or corresponding to the signal transmitted from the display device 100. [ The user can recognize whether the user input unit 235 is operated or whether the display apparatus 100 is controlled through the output unit 250.

For example, the output unit 250 may include an LED module 251 that is turned on when the user input unit 235 is operated or a signal is transmitted to and received from the display device 100 through the wireless communication unit 225, a vibration module 253 for outputting sound, an acoustic output module 255 for outputting sound, or a display module 257 for outputting an image.

In addition, the power supply unit 260 supplies power to the remote control device 200, and if the remote control device 200 is not moved for a predetermined time, the power supply is interrupted to reduce power consumption. The power supply unit 260 may resume power supply when a predetermined key provided in the remote control device 200 is operated.

The storage unit 270 may store various types of programs, application data, and the like necessary for the control or operation of the remote control apparatus 200. [ If the remote control device 200 wirelessly transmits and receives signals through the display device 100 and the RF module 221, the remote control device 200 and the display device 100 transmit and receive signals through a predetermined frequency band .

The control unit 280 of the remote control device 200 stores information on a frequency band and the like capable of wirelessly transmitting and receiving a signal with the display device 100 paired with the remote control device 200 in the storage unit 270, can do.

The control unit 280 controls various matters related to the control of the remote control device 200. [ The control unit 280 transmits a signal corresponding to a predetermined key operation of the user input unit 235 or a signal corresponding to the motion of the remote control device 200 sensed by the sensor unit 240 through the wireless communication unit 225 100).

Also, the voice acquisition unit 290 of the remote control device 200 can acquire voice.

The voice acquisition unit 290 may include at least one microphone 291 and may acquire voice through the microphone 291.

Next, Fig. 4 will be described.

4 shows an example of utilizing a remote control device according to an embodiment of the present invention.

4A illustrates that the pointer 205 corresponding to the remote control device 200 is displayed on the display unit 180. In FIG.

The user can move or rotate the remote control device 200 up, down, left or right. The pointer 205 displayed on the display unit 180 of the display device 100 corresponds to the movement of the remote control device 200. [ In this remote control device 200, as shown in the figure, since the pointer 205 is moved according to the movement in the 3D space, it can be called a space remote controller.

4B illustrates that when the user moves the remote controller 200 to the left, the pointer 205 displayed on the display unit 180 of the display apparatus 100 moves to the left correspondingly.

Information on the motion of the remote control device 200 sensed through the sensor of the remote control device 200 is transmitted to the display device 100. The display device 100 can calculate the coordinates of the pointer 205 from the information about the motion of the remote control device 200. [ The display device 100 can display the pointer 205 so as to correspond to the calculated coordinates.

4C illustrates a case where the user moves the remote control device 200 away from the display unit 180 while the specific button in the remote control device 200 is depressed. Thereby, the selected area in the display unit 180 corresponding to the pointer 205 can be zoomed in and displayed.

Conversely, when the user moves the remote control apparatus 200 close to the display unit 180, the selection area within the display unit 180 corresponding to the pointer 205 may be zoomed out and displayed.

On the other hand, when the remote control device 200 moves away from the display unit 180, the selected area is zoomed out, and when the remote control device 200 approaches the display unit 180, the selected area may be zoomed in.

Further, the recognition of the upward, downward, and leftward / rightward movement can be excluded when a specific button in the remote control device 200 is pressed. That is, when the remote control device 200 moves away from or approaches the display unit 180, it is not recognized that the up, down, left, and right movements are recognized, and only the forward and backward movements are recognized. Only the pointer 205 is moved in accordance with the upward, downward, leftward, and rightward movement of the remote control device 200 in a state where the specific button in the remote control device 200 is not pressed.

On the other hand, the moving speed and moving direction of the pointer 205 may correspond to the moving speed and moving direction of the remote control device 200.

The pointer in the present specification means an object displayed on the display unit 180 in correspondence with the operation of the remote control device 200. [ Therefore, various shapes of objects other than the arrow shapes shown in the drawings are possible with the pointer 205. [ For example, it can be a concept that includes points, cursors, prompts, thick outlines, and so on. The pointer 205 may be displayed corresponding to a point on a horizontal axis or a vertical axis on the display unit 180 or may be displayed corresponding to a plurality of points such as a line or a surface Do.

Next, a display system according to an embodiment of the present invention will be described with reference to FIG.

5 is a diagram illustrating a configuration of a display system according to an embodiment of the present invention.

Referring to FIG. 5, a display system according to an embodiment of the present invention includes a display device 100 and a set-top box 500.

The display device 100 and the set-top box 500 may be connected via wireless or wire.

The set-top box 500 may be connected to the display device 100 through the external device interface unit 135.

The set top box 500 may transmit information about the broadcast to the display device 100. [ The information on the broadcast may include a broadcast channel, and electronic program guide information including information on a broadcast program by time slot provided in the broadcast channel.

The set-top box 500 may transmit one or more of the video signal and the audio signal to the external device interface unit 135 of the display device 100.

The display apparatus 100 can display an image based on the video signal received from the set top box 500 through the display unit 180 and output the voice based on the received voice signal through the audio output unit 185 .

The video based on the received video signal may be a broadcast video, but is not limited thereto, and may be a streaming video.

The broadcast image may be a real time broadcast image.

Next, a method of operating the display apparatus 100 according to an embodiment of the present invention will be described with reference to FIG.

6 is a flowchart illustrating an operation method of a display apparatus according to an embodiment of the present invention.

The external device interface 135 of the display device 100 receives the video signal input from the set-top box 500 connected to the display device 100 (S601).

In one embodiment, the external device interface 135 may include one or more HDMI terminals. The set-top box 500 can be connected to the display device 100 through the HDMI terminal.

In yet another embodiment, the external device interface 135 may be provided separately from the display device 100. [ In this case, the external device interface unit 135 can be connected to the display device 100 wirelessly. The external device interface unit 135 is connected to the set-top box 500 and can wirelessly transmit the video signal received from the set-top box 500 to the display device 100.

The video signal received from the set-top box 500 may be a broadcast video signal, or a content video signal provided by the content provider.

The broadcast video signal may be a real time broadcast image in real time.

Hereinafter, it is assumed that the video signal is a broadcast video signal.

The control unit 170 displays the first broadcast image based on the received video signal on the display unit 180 (S603).

The first broadcast image displayed on the display unit 180 may be an image of the first broadcast program corresponding to the first broadcast channel.

If a request for changing the broadcast channel is received (S605), the controller 170 displays the second broadcast image of the changed broadcast channel (S607).

In one embodiment, the controller 170 may receive a request for the change of the broadcast channel from the remote control device 200.

The control unit 170 may change the first broadcast channel to the second broadcast channel in response to a request for changing the broadcast channel.

The control unit 170 recognizes the channel number of the second broadcast image using the second broadcast image of the changed broadcast channel (S609).

In one embodiment, when the broadcast channel is changed, the second broadcast image may include a banner including information on the changed second broadcast program and information on the second broadcast program.

The banner may be displayed superimposed on the second broadcast image.

The banner can be displayed for a predetermined time when the channel is not changed. The predetermined time may be 3 seconds, but this is only an exemplary value.

The banner may include a channel number of a broadcast program, a name of a broadcast program, a name of a broadcast station providing the broadcast program, and additional service information for providing an additional service related to the broadcast program.

In one embodiment, the controller 170 acquires location information indicating the channel number, and recognizes the channel number based on the acquired location information.

The control unit 170 may store the location information indicating the channel number in the storage unit 140. Even if the broadcast channel is changed again in the future, the controller 170 can quickly recognize the changed broadcast channel number using the stored location information.

In one embodiment, the controller 170 captures a second broadcast image including a banner, divides the captured second broadcast image into a plurality of regions, The number can be recognized.

The control unit 170 provides broadcast information related to the recognized channel number (S611).

In one embodiment, the broadcast information associated with the recognized channel number may be information of a broadcast program related to the recognized channel number. For example, the information of the broadcast program related to the channel number may include information on the channel number and the previous time of the broadcast program, but this is merely an example.

That is, the broadcast information related to the channel number may include channel recommendation information, a genre of a broadcast program, recommendation information of a broadcast program, and the like.

In one embodiment, the controller 170 may provide broadcast information related to the recognized channel number using an electronic program guide. The electronic program guide may be information that the display device 100 can acquire after connection with the set-top box 500. [

The electronic program guide may be a guide in which broadcast programs corresponding to a channel number and a channel number are arranged in chronological order.

When the controller 170 recognizes the channel number of the broadcast program currently being viewed by the user, the control unit 170 may display information on the broadcast program corresponding to the recognized channel number using the electronic program guide.

In one embodiment, the controller 170 may transmit broadcast information related to the recognized channel number to the user's mobile terminal.

Steps S601 to S611 will be briefly described below.

7 and 8 are views for explaining an example of recognizing a channel number of a broadcast program currently being broadcast and providing related broadcast information according to an embodiment of the present invention.

7 and 8, the display apparatus 100 will be described on the assumption that the broadcast image input from the set-top box 500 is displayed on the display unit 180. FIG.

Referring to FIG. 7, the controller 170 displays a first broadcast program image 701 corresponding to the first channel number. The name 711 of the broadcasting station that identifies the broadcasting station providing the first broadcasting program image 701 may be superimposed on the first broadcasting program image 701. [

The first broadcast program image 701 may be an image displayed according to power-on of the display device 100 and the set-top box 500.

The first broadcast program image 701 may be an image that the current user is watching after the power of the display device 100 and the set-top box 500 is turned on.

Meanwhile, the control unit 170 may change the first broadcast channel to the second broadcast channel according to a request for changing the broadcast channel.

Accordingly, the controller 170 may convert the first broadcast program image 701 into a second broadcast program image 703 corresponding to the second broadcast channel.

The control unit 170 may further display a banner 730 including information on the second broadcast program image 703 while changing the broadcast channel.

The banner 730 includes a channel number of the second broadcast program image 703, a name 731 of the broadcast station, previous and subsequent channel numbers 732 and 733 of the currently viewed channel number, A broadcast time 734 of the broadcast program currently being viewed, a broadcast time 735 of the broadcast program currently being watched, a VOD service 736 that can be provided by the content provider, and an option 737 for providing other broadcast services.

The controller 170 can recognize the channel number 022 of the second broadcast program image 703 currently being broadcasted using the second broadcast program image 703 and the banner 730. [ The controller 170 can acquire the position of the area 750 where the channel number 022 is displayed by using the information displayed on the second broadcast program image 703 and the banner 730. [

The controller 170 can recognize the channel number < 022 > in the area 750 through the position of the obtained area 750. [

Even if the channel is changed later, since the position of the obtained area 750 is stored, the controller 170 can quickly recognize the changed channel number.

The process of recognizing the channel number will be described later in detail.

The controller 170 may provide broadcast information related to the recognized channel number < 022 >.

For example, as shown in FIG. 8, the control unit 170 can provide related broadcast information 800 based on the recognized channel number < 022 > and the electronic program guide received from the set-top box 500 have.

Specifically, the control unit 170 can display relevant broadcast information 800 including a plurality of thumbnail images 810 to 840 corresponding to previous times of the second broadcast program corresponding to the channel number < 022 > have.

The control unit 170 compares the recognized channel number < 022 > with the electronic program guide to extract broadcast program information, and uses the extracted broadcast program information to transmit related broadcast information (800) can be recommended.

If any one of the plurality of thumbnail images 810 to 840 is selected, the control unit 170 can reproduce the broadcast program of the previous time corresponding to the selected thumbnail image.

In this way, the user can receive information related to the broadcast channel and the broadcast program viewed through the set-top box 500 from the TV itself, thereby effectively using the function of the TV.

Hereinafter, the process of recognizing the channel number will be described in detail.

9 to 15 are views for explaining a process of recognizing the number of a broadcast channel currently being watched according to an embodiment of the present invention.

Fig. 9 is a diagram for explaining step S609 in Fig. 6 in detail.

The control unit 170 captures the second broadcast image (S901).

In one embodiment, the control unit 170 recognizes the time when the banner is output when the channel is changed, and can capture the second broadcast image including the banner when the banner is output. To this end, the control unit 170 may store the time at which the banner is output in the storage unit 140.

The time at which the banner is output may be 0.3 seconds after the channel change, but this is only an example.

The control unit 170 divides the captured second broadcast image into a plurality of regions (S903).

The size of each of the plurality of divided regions may be the same or different from each other.

Each of the plurality of divided areas may overlap a part of the adjacent area.

The control unit 170 obtains the number of characters in each of the plurality of divided regions (S905).

Here, the letters may be numbers or letters. The letters may be alphabetical or Korean, but this is only an example.

The control unit 170 can recognize the number of characters or characters in the area using an open source OCR (teaseract API).

The control unit 170 checks whether the number of characters in each area is equal to or less than the reference number (S907).

Here, the reference number may be three. In general, the channel number is composed of 3 characters or less.

If the number of characters in the divided area exceeds the reference number, the corresponding area is further divided (S909).

If the number of characters in the divided area exceeds the reference number, the control unit 170 can divide the divided area into smaller areas for accurate recognition of the channel number.

The greater the number of characters in the divided area, the lower the recognition rate.

If the number of characters in the divided area is equal to or smaller than the reference number, the controller 170 recognizes the text in the corresponding area (S911).

In one embodiment, when the number of characters in the divided area is three or less, the control unit 170 can recognize the text in the corresponding area.

The control unit 170 can recognize the text in the area by using an open source OCR (teaseract application programming interface).

The control unit 170 checks whether the recognized text is valid text (S913). If the recognized text is invalid, the control unit 170 excludes the recognized region from the candidate group (S913).

In one embodiment, the control unit 170 can determine that the text constituting the text is a valid text when the text is composed of numbers or characters. If any of the characters constituting the text is not composed of numbers or characters, Can be determined as invalid text.

This is because each of the plurality of areas can be partially overlapped, so that only a part of the number or character can be included in the area. This will be described later.

If the recognized text is valid text, the control unit 170 registers the corresponding region as a candidate group and stores candidate group information (S917).

When the text in the divided area is judged as valid text, the control unit 170 can register the corresponding area as a candidate group area for recognizing the channel number. At the same time, the control unit 170 may store the candidate group information corresponding to the candidate group region in the storage unit 140. [

The candidate group information may include at least one of coordinates of the area, a recognized character in the area, a size of the recognized character, a length of the recognized character, and a recognition rate indicating the accuracy of character recognition.

Hereinafter, a process of dividing a captured broadcast image and registering a divided region as a candidate group will be described.

10 to 12 are views for explaining a process of dividing a captured broadcast image according to an embodiment of the present invention and registering the divided region as a candidate group.

10 to 12 will be described using the embodiment of Fig.

Referring to FIG. 10, the display apparatus 100 displays a second broadcast program image 703 and a banner 730 according to a change of a broadcast channel.

The control unit 170 can capture the second broadcast program image 703 at the time when the banner 730 is output.

Thereafter, the control unit 170 may divide the second broadcast program image 703 including the banner 730 into a plurality of regions.

In FIG. 10, only a part of the banner 730 is divided for the convenience of explanation, but the entire banner 730 or the second broadcast program image 703 can be divided.

The control unit 170 can confirm the number of characters in each of the plurality of divided regions.

Fig. 11 shows the recognized regions 1101 to 1109. Fig.

The control unit 170 can check whether the number of characters in each of the recognized areas 1101 to 1109 is three or less. For example, the number of characters in the first area 1101, the third area 1105, and the fifth area 1109 can be confirmed to be three. It can be confirmed that the number of characters in the second area 1103 is five and the number of characters in the fourth area 1107 is two.

The controller 170 determines that the number of characters in the second area 1103 exceeds the reference number so that the second area 1103 is divided into the first sub area 1201 and the second sub area 1203 ).

Since the number of characters in the first sub-area 1201 is two and the number of characters in the second sub-area 1205 is three, the condition below the reference number is satisfied.

Thereafter, the control unit 170 may register or exclude the corresponding region as a candidate group according to whether the text in the plurality of regions shown in Figs. 11 and 12 is valid text.

For example, since the number 3 of the text in the fourth region 1107 has a cut-out shape, the controller 170 can exclude the fourth region 1107 from the candidate region.

Since the remaining regions 1101, 1105, 1109, 1201, and 1203 are not cut off, the control unit 170 determines that the text is valid and registers each region as a candidate group.

In addition, the control unit 170 may store the information of the registered candidate group. The information of the registered candidate group includes at least one of the coordinates of the area, the recognized character in the area, the size of the recognized character, the length of the recognized character, the length of the text which is a set of recognized characters, .

Next, an example will be described in which candidate groups are filtered based on information of registered candidate groups, and a final candidate group for channel number recognition is selected.

13 is a flowchart illustrating an example of filtering a candidate group based on information of a candidate group registered according to an embodiment of the present invention and selecting a final candidate group for channel number recognition.

FIG. 13 is a process performed after the flow chart of FIG.

Referring to FIG. 13, the controller 170 filters candidates based on the information of the registered candidate group (S1301).

In one embodiment, the control unit 170 may exclude candidates that include non-numeric characters in the candidate group. In general, channel numbers are composed of numbers.

Referring to FIG. 11, the controller 170 may filter the candidate groups 1109 and 1203 in which the characters are mixed among the registered candidate groups 1101, 1105, 1109, 1201, and 1203.

In addition, after filtering, the control unit 170 selects one of the remaining candidate groups 1101, 1105, and 1201

Only the candidate group 1105 having the largest text size can be left and the remaining candidate groups 1101 and 1201 can be deleted. In general, the number of the channel currently being broadcast is displayed larger than the adjacent channel number.

In addition, the control unit 170 may exclude a candidate group having a small text length if the candidate group has similar coordinates but the text length is different. For example, when the text length of the first candidate group is 5 and the text length of the second candidate group is 6, the control unit 170 may filter the first candidate group. This is because part of the text can be cut off during the segment recognition process.

If the recognized text of the candidate group is the same, the control unit 170 can leave only one and delete the remaining candidate group.

Here, it is assumed that the text is composed of numbers only.

The control unit 170 may accumulate and count the number of extraction of the same candidate group consisting of three or less numbers of texts. The control unit 170 may sort the candidate groups having the same text composed of three or less numbers according to the cumulative number of times of extraction.

The controller 170 confirms whether the number of the filtered candidate groups is two or more (S1303).

If the number of filtered candidate groups is less than 2 (only one candidate group remains), the controller 170 stores the coordinates of the remaining candidate groups (S1305).

If only one filtered candidate group is left, the control unit 170 may select the remaining candidate group as the final candidate group and store the coordinates of the selected final candidate group.

The selected final candidate group may be a region in which the channel number of the broadcast image currently being watched is displayed.

Referring to FIG. 14, a selected final candidate group 1105 of the registered candidate groups 1101 to 1109 is shown. The final candidate group may have a rectangular shape, but is merely an example.

The control unit 170 may store vertex coordinate values (x1, y1), (x2, y2), (x3, y3), (x4, y4) of the final candidate group. In addition, the controller 170 may store the horizontal length W and the vertical length H of the final candidate group.

In addition to the coordinate information of the final candidate group, the control unit 179 can also store the information of the set top box 500, the channel switching time, and the banner output time together, as shown in FIG.

The information of the set top box 500 may include information that can identify the set top box 500 such as the model name of the set top box, the version of the set top box, and the like.

The channel switching time may be a time required for the channel to be changed according to a broadcast channel change request.

The banner output time may include at least one of a time at which the banner is output after the change of the broadcast channel, and a time at which the display of the banner is maintained.

The controller 170 acquires the channel number in the candidate group as the channel number of the second broadcast image based on the coordinates of the candidate group (S1307).

When the broadcast channel is changed, the control unit 170 can recognize the channel number of the corresponding region based on the coordinates of the final candidate group.

When the coordinates of the final candidate group are obtained, the display apparatus 100 can recognize the number of the channel that has changed rapidly by using the position corresponding to the coordinates of the final candidate group obtained in the broadcast image of the changed channel.

Thereafter, the control unit 170 provides broadcast information related to the acquired channel number (S611).

That is, the display apparatus 100 can recognize the number of the changed broadcast channel without complicated process even if the channel is changed through one-time channel number recognition process.

Accordingly, the display apparatus 100 can actively provide broadcast information related to the channel number to the user, using the electronic program guide.

When the display apparatus 100 is rebooted, the control unit 170 can quickly recognize the channel number of the currently broadcasted image by using the location information of the stored channel number. In other words, since the location information of the already acquired channel number is stored, it is not necessary to use the algorithm for searching for the channel number again.

On the other hand, if the number of the filtered candidate groups is two or more, the control unit 170 captures the third broadcast image according to the channel change (S1309).

If the number of the filtered candidate groups is two or more, the controller 170 may display information indicating that the channel number can not be recognized to select the final candidate group.

In addition, when the number of the filtered candidate groups is two or more, the controller 170 may display information requesting the change of the broadcast channel to select the final candidate group.

The control unit 170 may change the second broadcast channel to the third broadcast channel and display the third broadcast image corresponding to the third broadcast channel according to the channel change request. Also, the controller 170 can capture the third broadcast image.

The control unit 170 acquires new candidate groups corresponding to the coordinates of two or more candidate groups obtained in the previous step (S1309).

The controller 170 can acquire two or more new candidate groups in the captured third broadcast image using the coordinates of each of the obtained two or more candidate groups. Each of the two or more new candidate groups may be the same as the coordinates of each of the two or more candidate groups previously acquired.

At the same time, the control unit 170 can acquire information of each of the two or more candidate groups.

The control unit 170 filters the obtained new candidates (S1311), and stores the coordinates of the remaining candidate groups (S1313).

The control unit 170 can leave only one candidate group based on the information of each new candidate group. For example, if the texts (left and right) lengths of the respective new candidate groups are the same, the control unit 170 can select a candidate group having a large vertical length of text as a final candidate group.

The control unit 170 obtains the channel number of the remaining candidate group as the channel number of the third broadcast image (S1315), and provides broadcast information related to the obtained channel number (S611).

Through this process, the control unit 170 can select the final candidate group and store the coordinates of the selected final candidate group. This is as described in Fig.

Also in this case, as shown in Fig. 15, other information besides coordinate information of the final candidate group can be stored together.

16 is a block diagram illustrating a configuration of a control unit for recognizing the number of a broadcast channel according to an embodiment of the present invention.

The control unit 170 according to an exemplary embodiment of the present invention may include a capture module 171, a segmentation recognition module 172, a candidate group extraction module 173, a candidate group filtering module 174 and a channel number recognition module 175 have.

The capture module 171 can capture the broadcast image being displayed. In particular, when the channel is changed, the capture module 171 can capture the broadcast image of the changed broadcast channel.

The segmentation recognition module 172 may divide the captured broadcast image into a plurality of regions. The segmentation recognition module 172 can recognize the characters in the plurality of divided regions.

The division recognizing module 172 may check the number of characters contained in each of the plurality of areas, and may further divide the area if the number of letters exceeds the reference number.

The division recognizing module 172 can recognize the text in the corresponding area if the number of characters in each of the plurality of areas is equal to or less than the reference number.

The candidate group extraction module 173 checks whether the recognized text is valid text, and if the recognized text is text that is not valid, the candidate group can be excluded from the candidate group.

If the recognized text is valid text, the candidate group extraction module 173 can register the corresponding region as a candidate group.

The candidate group extraction module 173 may store the information of the candidate group registered in the storage unit 140. [

The candidate group filtering module 174 may filter candidate groups based on information of each of the plurality of registered candidate groups.

The candidate group filtering module 174 may store the coordinate information of the final candidate group in the storage unit 140 after filtering.

The channel number recognition module 175 can recognize the channel number by using the coordinate information of the stored final candidate group.

The channel number recognition module 175 may provide broadcast information related to the recognized channel number using the recognized channel number and the electronic program guide.

Next, a process of recognizing a channel number using a banner according to another embodiment of the present invention will be described.

17 is a flowchart illustrating a process of recognizing a channel number using a banner according to another embodiment of the present invention.

Hereinafter, it is assumed that a channel number is displayed at two positions. This is because the position of the banner displayed according to the channel can be changed.

For example, the channel numbers of the broadcast channels included in the first broadcast channel group may be displayed on the main banner of the first location, and the channel numbers of the broadcast channels included in the second broadcast channel group may be displayed on the sub- Lt; / RTI &gt;

Hereinafter, a channel number of broadcast channels included in the first broadcast channel group is referred to as a main channel area, and a channel number of broadcast channels included in the second broadcast channel group is referred to as a subchannel area.

The controller 170 acquires the first position information of the main channel area (S1701).

In one embodiment, the controller 170 may obtain the first position information of the main channel region based on the embodiment of Figs. 9-13. The first position information may include a coordinate value of a position at which the main channel region is displayed.

The controller 170 checks whether the main banner has been acquired (S1703). If the main banner is acquired, it is checked whether the main channel area is recognized in the main banner (S1705).

In one embodiment, the controller 170 may obtain a main banner through a comparison between broadcast images when a channel is changed. Specifically, when the positions of the main banners displayed on the first broadcast image and the second broadcast image of the changed channel are the same, the control unit 170 can obtain the main banner based on the degree of change in the image. If the degree of change of the image is less than the predetermined amount of change, the control unit 170 can acquire the area as the main banner.

The control unit 170 can recognize the main channel area based on the first position information in the obtained main banner.

If the main channel area is recognized, the controller 170 provides broadcast information related to the recognized main channel area (S1707).

On the other hand, if the main banner is not acquired, the controller 170 checks whether second position information corresponding to the sub-channel area exists (S1709).

That is, the display position of the sub-banner corresponding to the second broadcast channel group may be different from the display position of the main banner, so that the channel number in the main channel area may not be recognized.

The controller 170 can confirm whether or not the second position information corresponding to the subchannel area is stored in the storage unit 140. [

If the second location information exists, the controller 170 determines whether the sub-banner has been acquired (S1711).

When the second location information of the subchannel area is stored in the storage unit 140, the control unit 170 can confirm whether the subbanner has been acquired using the main banner acquisition process.

If the sub-banner is acquired, the control unit 170 confirms whether the sub-channel region is recognized in the sub-banner (S1713).

The controller 170 can recognize the channel number in the sub-banner using the second position information of the sub-channel area in the sub-banner.

If the subchannel area is recognized, the controller 170 provides broadcasting information related to the recognized subchannel area (S1707).

On the other hand, if the sub-channel area is not recognized in the sub-banner, the controller 170 provides broadcast information related to the previously recognized channel number (S1715).

On the other hand, if the second position information of the subchannel area does not exist, the controller 170 acquires the second position information of the subchannel area based on the subimage (S1717).

In one embodiment, the sub-images may be images of broadcast channels included in the second broadcast channel group.

The sub-image may include sub-banners. The controller 170 can obtain the second position information of the sub-channel area using the sub-banner corresponding to the sub-image. In this process, an embodiment for the channel number recognition in Figs. 9 to 13 can be used.

The controller 170 recognizes the subchannel area corresponding to the second position information in the subbanner (S1719), and provides broadcast information related to the recognized subchannel area (S1707).

According to the embodiment of the present invention, even if the position of a banner displayed according to a broadcast channel is changed, a channel number can be quickly recognized through a channel number display area corresponding to each banner.

Meanwhile, according to the embodiment of the present invention, the channel number may not be recognized even in the embodiment of FIG. This is because the user interface provided by the set-top box 500 is updated, and the positions of the main banner and the sub banner themselves can be changed.

18 is a flowchart for explaining a process when the channel number is not recognized even through the main banner and the sub banner according to the embodiment of the present invention.

Referring to FIG. 18, the controller 170 obtains a failure image that failed to recognize the channel number (S1801).

The control unit 170 can capture an image of a broadcast channel on which the channel number is not recognized. If the channel number is not recognized by a predetermined number of times through the channel number recognition process, the control unit 170 can capture the corresponding image.

The control unit 170 determines whether a banner exists in the failed image (S1803).

If the banner does not exist in the failed image, the controller 170 deletes the failed image (S1805), and recognizes the channel number using the position information of the previously acquired channel number (S1807).

If a banner exists in the failed image, the control unit 170 determines whether the banner is the same as the previously acquired banner (S1809).

The control unit 170 may compare the banners in the failed image with the main banner and sub banner previously obtained.

The control unit 170 can perform a process of comparing the banners using the colors of the banners. In general, the banner can be displayed using translucent colors.

If the banner in the failed image is the same as the previously obtained banner, the controller 170 recognizes the channel number using the position information of the previously obtained channel number (S1807).

If the banner in the failed image is not the same as the previously acquired banner, the control unit 170 returns to step S1701 in FIG. 17 to perform the channel number recognition process.

According to an embodiment of the present invention, the above-described method can be implemented as a code readable by a processor on a medium on which a 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, and the like.

The above-described display device is not limited to the configuration and method of the above-described embodiments, but the embodiments may be configured such that all or some of the embodiments are selectively combined so that various modifications can be made. It is possible.

Claims (10)

In the display device,
A display unit;
An external device interface unit for receiving a video signal from a set-top box connected to the display device; And
A broadcast image of a changed broadcast channel is displayed based on a video signal received from the set-top box when the broadcast channel is changed,
Recognizes a channel number of the broadcast image using the broadcast image,
And a control unit for displaying broadcast information related to the recognized channel number on the display unit
Display device. The method according to claim 1,
The control unit
Acquiring location information of the channel number included in the displayed broadcast image,
Based on the obtained positional information,
Display device. 3. The method of claim 2,
And a storage unit for storing location information of the channel number
Display device. The method of claim 3,
The control unit
When the broadcast channel is changed again, the channel number of the re-modified broadcast channel is recognized using the stored location information
Display device. The method of claim 3,
The control unit
Dividing the displayed broadcast image into a plurality of areas,
Obtains the number of characters in the plurality of divided regions,
When the number of characters in each area is equal to or less than the reference number, the text in each area is recognized,
If the recognized text is valid, the region is registered as a candidate group,
The coordinates of the region registered as the candidate group are obtained,
And acquires the obtained coordinates as position information of the channel number
Display device. 6. The method of claim 5,
The control unit
If the text in each area contains only numbers, the recognized text is judged to be valid
Display device. The method according to claim 6,
The control unit
When a plurality of candidate groups are registered, a plurality of candidate groups are filtered based on information of each candidate group,
As a result of the filtering, when one candidate group remains, the coordinates of the remaining candidate group are acquired as the position of the channel number
Display device. 8. The method of claim 7,
Each candidate's information
The coordinate information of each candidate group, the length of the text included in each candidate group, and the size of the text.
Display device. 9. The method of claim 8,
The control unit
A candidate group having a largest text size among the plurality of candidate groups registered as a final candidate group,
The coordinates of the selected final candidate group are acquired as the position information of the channel number
Display device. The method according to claim 1,
The control unit
Displaying the broadcast information related to the recognized channel number using electronic program guide information received from the set top box,
The broadcast information
Channel recommendation, information of the broadcast image, and genre of the broadcast image
Display device.

Images