KR20190019766A - Display device and operating method thereof - Google Patents

Abstract

The present invention is provided to set a current time more accurately by a display device using a broadcasting signal received from a broadcasting station. To this end, the display device comprises: a tuner for receiving a broadcasting signal from a broadcasting channel; a display unit for displaying a broadcasting screen according to the received broadcasting signal; a control unit for sequentially converting a plurality of broadcasting channels to receive a plurality of broadcasting signals from each of the plurality of converted broadcasting channels, and for obtaining a plurality of current time information from each of the plurality of broadcasting signals; and a storage unit for storing the plurality of obtained current time information. The control unit can set a current time according to the current time information which most matches among the plurality of stored current time information.

Description

[0001] DISPLAY DEVICE AND OPERATING METHOD THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a display device and a method of operating the same, and more particularly, to a display device and a method of operating the same that automatically set the current time.

In recent years, digital TV services using wired or wireless communication networks have become 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) and smart TV services, which are a kind of digital TV service, the user provides bidirectionality so that the user can actively select the types of viewing programs and 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.

Also, the digital TV can receive digital signals for each broadcasting company from each broadcasting company. Digital signals may include digitally compressed and modulated data capable of broadcasting moving images and sounds. In addition, the digital signal may include current time information, which may be used for various functions such as providing various program organizing information, reservation setting, and the like. Therefore, if the digital TV is provided with the wrong current time information, there is a problem that the reliability is not ensured in providing various functions to the user.

The present invention provides a display device and a method of operating the same that more accurately sets a current time using current time information received from a broadcasting company.

The present invention is to provide a display device and a method of operating the same that more accurately set the current time by not classifying broadcast channels that transmitted erroneous current time information and applying current time information received from the classified broadcast channel.

A display device according to an embodiment of the present invention includes a tuner for receiving a broadcast signal from a broadcast channel, a display unit for displaying a broadcast screen according to the received broadcast signal, a display unit for sequentially displaying a plurality of broadcast channels, And a storage unit for storing a plurality of pieces of current time information obtained from the plurality of pieces of current time information, wherein the control unit receives a plurality of pieces of current time information from the plurality of pieces of current time information, The current time can be set according to the current time information.

The control unit can sequentially switch a plurality of broadcast channels in a warm standby mode in which the display unit is turned off and the power of the display device is turned on and receive a plurality of broadcast signals to set the current time.

When the current time information received through the broadcast channel before the change is different from the current time information received through the changed broadcast channel, the current time information according to the changed broadcast channel is changed to the error It can be judged that there is a < / RTI >

The control unit can maintain the predetermined current time if there is an error in the current time information according to the changed broadcast channel.

If the current time information included in the broadcast signal received from the changed broadcast channel coincides with the current time information received through the broadcast channel before the current time information is changed, the controller can update the current time with the current time information according to the changed broadcast channel.

The control unit may change the broadcast channel upon receipt of the channel change command and confirm whether the current time correction included in the broadcast signal received from the changed broadcast channel is different from the preset current time.

A plurality of broadcast channels sequentially switching may include all switchable broadcast channels.

A plurality of broadcast channels sequentially switching may include a predetermined number of broadcast channels among all switchable broadcast channels.

If the trust channel is set, the control unit can receive the broadcast signal from the predetermined trust channel and set the current time according to the current time information included in the received broadcast signal.

The control unit may store the current broadcast channel information in the storage unit before sequentially switching the plurality of broadcast channels, and may sequentially select a broadcast channel according to the stored broadcast channel information after sequentially switching the plurality of broadcast channels.

According to an embodiment of the present invention, the display device can automatically set the current time using the received broadcast signal, and filter the current time information with the error to set the current time more accurately.

In addition, since the display device accurately sets the current time, there is an advantage that reliability of a function that operates based on the current time, such as an electronic program guide (EPG), a recording reservation, a sleeping reservation, etc., can be enhanced.

In addition, since the display device performs channel calibration in warm standby mode or performs channel calibration with other operations such as channel setting, it minimizes the user's viewing disturbance and minimizes the power consumed in channel calibration There is an advantage to be able to.

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 flowchart showing a method of setting a current time by a conventional display device.
FIG. 6 is a diagram illustrating a time when the display device receives a broadcasting signal for each broadcasting station and a current time set according to the received broadcasting signal.
7 is a flowchart showing a method of setting a current time according to an embodiment of the present invention.
8 to 10 are exemplary diagrams for explaining a method of setting a current visual correction mode by a display device according to an embodiment of the present invention.
11 is an exemplary diagram for explaining an error channel classification method according to an embodiment of the present invention.
12 is a flowchart showing a current time correction method according to the first embodiment of the present invention.
13 is an exemplary view showing an output screen according to the current time correction method described with reference to FIG.
14 is a flowchart showing a current time correction method according to the second embodiment of the present invention.
15 is an exemplary diagram for explaining a message for confirming whether or not the current time correction is performed 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 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 applicable to a smartphone in some cases.

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

1, the display apparatus 100 includes a broadcast receiving unit 130, an external device interface unit 135, a storage unit 140, a user input interface unit 150, a control unit 170, a local 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 to an external device. The tear-off unit 135, which is an external device, can receive at least one of video and audio output from an external device and transmit the received video or audio to the control unit 170. 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 local communication unit 173 can perform communication with an external device through wired or wireless communication. The short range communication unit 173 can perform short range communication with an external device. To this end, the short-range communication unit 173 is connected to the short-range communication unit 173 via Bluetooth, a Radio Frequency Identification (RFID), an Infrared Data Association (IrDA), an Ultra Wide Band (UWB), a ZigBee, (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The local 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 local communication unit 173 can detect (or recognize) the wearable device capable of communicating with the periphery of the display device 100. [ Further, 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 transmits at least a part of the data processed by the display device 100 to the local communication unit 173 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 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.

The user can change the broadcast channel displayed on the display unit 180 by pressing the channel change button 237 provided in the remote control device 200. [ Alternatively, the user can change a broadcast channel displayed on the display unit 180 by pressing a channel change button (not shown) provided in the display apparatus 100.

The channel change button may include a channel up button and a channel down button as shown in FIG. 3, as well as a plurality of number buttons.

The control unit 170 may receive an input for pressing a channel change button and receive a channel change command to switch to a broadcast channel corresponding to the channel change button. Upon receiving the channel change command, the controller 170 may control the tuner 131 to tune to the broadcast channel corresponding to the channel change command. The tuner 131 can receive a broadcast signal from the selected broadcast channel.

The broadcast signal may include data for the broadcast image to be output. The broadcast signal may further include current time information together with data on the broadcast image.

Upon receiving the broadcast signal, the control unit 170 can set the current time on the display device 100 based on the current time information included in the broadcast signal. For example, the current time information may include at least one of a UTC (Universal Time Coordinated) time, a time zone, and an offset. The control unit 170 may determine whether the time zone in which the display device 100 is located coincides with the time zone received through the broadcast signal. If the time zones do not coincide with each other, the control unit 170 can adjust the time zones according to the time zone in which the display device 100 is located. The control unit 170 may calculate the current time based on the time zone, the UTC time, and the offset.

The conventional display apparatus can receive the broadcast signal for the switched broadcast channel and set the current time each time the channel is switched.

5 is a flowchart showing a method of setting a current time by a conventional display device.

The conventional display device can be turned on (On) or channel switched (S11).

The conventional display device can be tuned to a specific broadcast channel as the power is turned on or the channel is switched.

The conventional display device can receive the broadcast signal from the selected broadcast channel (S13).

The broadcast signal may include data on the broadcast image to be outputted and current time information, as described above.

The conventional display apparatus can acquire the current time information from the received broadcast signal (S15), and set the current time based on the obtained current time information (S17).

The broadcasting signal can be transmitted directly from the broadcasting station of the corresponding channel. At this time, it may happen that a broadcast signal including current time information with an error in the broadcasting station is transmitted to the display device. Specifically, the broadcasting station can transmit the current time information having the error in at least one of the UTC time, the time zone, and the offset to the display device.

FIG. 6 is a diagram illustrating a time when the display device receives a broadcasting signal for each broadcasting station and a current time set according to the received broadcasting signal.

The display apparatus 100 can be tuned to the 16-1 channel as the power is turned on. Accordingly, the display apparatus 100 can receive the broadcasting signal from the A broadcasting station at 10:24 on March 31, 17, and the current time can be set to 10:24 on March 31, 17.

The display device 100 can receive the channel change command to switch to the 11-1 channel at 10:26 on March 31, 17, and the current time is displayed on March 31, 10:26.

In this manner, the display apparatus 100 can receive the broadcast signal from the changed broadcast channel every time the channel is changed, and set the current time.

However, if the display apparatus 100 receives the channel change command to switch to the 30-1 channel at 10:46 on March 31, 17, and receives the broadcast signal (specifically, the current time information) received from the L station The current time may be incorrectly set to 12:50 on January 14, 33. That is, an error may occur in both the date and the current time.

Alternatively, when the display apparatus 100 receives a channel change command to switch to the 41-1 channel at 10:50 on March 31, 17, and there is an error in the broadcast signal received from the N broadcast station, 31 May 10:45. That is, the current time may be set to be slower than the actual time.

Alternatively, when the display device 100 receives a channel change command to switch to 1-1 channel on March 31, 17, and there is an error in the broadcast signal received from the P broadcasting station, the current time is March 12, 30 < / RTI > That is, the current time can be set faster than the actual time.

In this way, there may be an error in the broadcast signal received from the broadcasting station. If the current time is set from the broadcasting signal received every time the power is turned on or the channel is switched, the current time may be set incorrectly. If the current time is incorrectly set on the display device, there may arise a problem that the user gives erroneous time information or functions differently from the function intended by the user in functions such as scheduled recording and sleeping reservation.

Next, FIG. 7 is a flowchart illustrating a method of setting a current time according to an embodiment of the present invention.

The display device according to the embodiment of the present invention can set the current time or automatically classify the current time by classifying the broadcast channel that transmitted the erroneous broadcast signal.

First, the controller 170 can determine whether the current time calibration mode is set (S101).

The current time calibration mode according to an embodiment of the present invention can convert the current time into a plurality of channels and receive a broadcast signal from each channel to correct the current time. Therefore, the current visual correction mode can be performed at a time when the user does not watch the display device 100, and the power consumption can be increased when the current visual correction mode is performed.

The control unit 170 may receive an instruction to set whether to use the current visual correction mode. The user can set whether to use the current time calibration mode or not. According to one embodiment, when setting the user to use the current visual correction mode, the user can further receive at least one instruction to set at least one of the execution time and the execution method of the current visual correction mode.

Next, with reference to FIGS. 8 to 10, a method of setting the current visual correction mode according to an exemplary embodiment of the present invention will be described.

As shown in FIGS. 8 to 10, the display unit 180 may display the time setting menu 300.

The time setting menu 300 may include a current time setting item 310 for selecting a current time setting method. The current time setting item 310 may include an automatic item in which the display device 100 automatically sets the current time and a manual item in which the user directly sets the current time. The control unit 170 may receive a command to select either the automatic item or the manual item.

As shown in FIG. 8, when the item for manually setting the current time is selected, the controller 170 can activate the time input item 330 for inputting the hour, minute, and second, respectively. On the other hand, when the item for manually setting the current time is selected, the control unit 170 may deactivate the item 320 for setting the current time calibration mode. If the current time is set manually, it is not necessary to correct the current time.

On the other hand, if the current time is manually set to the display device 100, the set current time may be deleted when the power supply is interrupted. Therefore, it may be inconvenient to reset the current time every time after power supply to the display device 100 is interrupted.

As shown in FIG. 9, the control unit 170 may receive an instruction to set an automatic item in the current time setting item 310. FIG. In this case, the controller 170 can automatically set the current time through the current time information included in the received broadcast signal.

On the other hand, when the item for automatically setting the current time is selected, the controller 170 may deactivate the time input item 330 and activate the item 320 for setting the current time correction mode.

The control unit 170 may receive an instruction to turn on or off the current time calibration mode in the item 320 for setting the current time calibration mode.

The control unit 170 can activate the calibration mode execution time setting item 321 and the calibration mode execution method setting item 322 when the current time calibration mode is turned on.

Referring to FIG. 9, the calibration mode execution time setting item 321 may include a 'power OFF' item, a 'channel setting' item, an 'S / W update' item, and a 'manual setting' item.

The controller 170 enters a warm standby mode when a command to turn off the power of the display device 100 is received and the tuner 131 receives a plurality of broadcast channels So that the current time can be set.

The warm standby mode may turn off the function associated with the output of the display unit 180 to indicate a state in which the display apparatus 100 operates with less power. That is, in the warm standby mode, the display apparatus 100 may be turned on, and the display unit 180 may be turned off.

In the warm standby mode, components such as a backlight having a large power consumption are turned off and power is supplied only to components such as the tuner 131 and the like, and a state of performing an overall function excluding screen display can be shown.

Thus, setting the current time in the warm standby mode has the advantage that the power consumed in setting the current time can be minimized without interfering with the user's viewing.

When the 'channel setting' item is selected, the controller 170 switches all the broadcast channels and sets the channel when receiving the channel setting command, and simultaneously sets the current time by receiving the broadcast signal from the broadcast channel to be switched.

When the 'S / W update' item is selected, the controller 170 controls the tuner 131 to switch a plurality of broadcast channels when entering the warm standby mode for software upgrade, thereby setting the current time. The warm standby mode is the same as described above.

When the 'manual setting' item is selected, the control unit 180 can receive an instruction to set the time to execute the current time setting operation. The user can input the time to execute the current time setting operation. For example, the user can set the current time setting operation to be performed in the morning time zone in which the display device 100 is rarely viewed. The controller 180 may control the tuner 131 to switch a plurality of broadcast channels to set the current time when the manually inputted time arrives.

However, the 'power OFF' item, the 'channel setting' item, the 'S / W update' item, and the 'manual setting' item shown in FIG. 8 are merely illustrative and not limited to a plurality of broadcast channels ≪ / RTI > may be included.

Next, a method of executing the calibration mode will be described.

Referring to FIG. 10, the calibration mode execution method setting item 322 may include a 'trust channel setting' item, an 'N channel analysis' item, an 'N% channel analysis' item, .

If the 'Trust channel setting' item is selected, the controller 170 may receive a command for selecting a specific channel. In this case, the controller 170 can set the current time by receiving the broadcast signal from the selected specific channel while switching only the selected channel by the tuner 131 at the current time setting. The specific channel may be at least one or more channels, and the channel that the user trusts may be directly set.

According to the present invention, there is an advantage in that power consumption and time required for setting the current time can be reduced by switching only a specific channel that the user trusts and setting the current time without switching over a lot of channels and receiving a broadcast signal.

When the 'N channel analysis' item is selected, the control unit 170 can set the current time by receiving broadcast signals from the switched broadcasting channel while switching only the preset N channels at the current time setting.

At this time, the number of broadcast channels to be switched can be set through a user input command.

Also, the channel to be switched can be set based on the current channel. According to an embodiment, the controller 170 may set the current time by switching the current channel, the previous (N-1) / 2 channels of the current channel, and the following (N-1) have. According to another embodiment, the controller 170 may set the current time by switching the current channel and the previous (N-1) channels of the current channel. According to another embodiment, the controller 170 may set the current time by switching the present channel to the next (N-1) channels of the current channel. However, this is merely an example, and the control unit 170 can switch the preset number of channels in various ways and set the current time.

According to this, there is an advantage that the number of switching channels can be arbitrarily set in consideration of the power consumed by the user and the time required for the current time setting.

When the 'N% channel analysis' item is selected, the control unit 170 can set the current time by switching only the broadcasting channel corresponding to a predetermined ratio with respect to the total number of broadcasting channels in the current time setting.

At this time, the ratio of the broadcast channel to be switched to the total number of broadcast channels can be set through the user input command.

For example, when the total number of broadcast channels is 200, the controller 170 may set the current time by switching only 40 broadcast channels when the '20% channel analysis' is set.

According to this, there is an advantage that the number of switching channels can be arbitrarily set considering the power consumed in setting the current time, the time required, and the reliability, by setting the number of broadcast channels to be analyzed as a ratio.

If the 'Analyze all channels' item is selected, the control unit 170 can set the current time by receiving broadcast signals while switching all channels that can be switched at the current time setting. In this case, the controller 170 can receive the broadcast signals from all the broadcast channels and set the current time.

According to this, there is an advantage that the current time can be set more accurately.

When the current time correction mode is set to off, the controller 170 does not set the current time by switching a plurality of broadcast channels. Instead, The current time can be set.

7, if the current time correction mode is not set (S101), the controller 170 sets the current time based on the broadcast signal received through the changed broadcast channel every time the channel is changed (S103).

In this case, if there is an error in the broadcast signal received through the changed broadcast channel, the current time may be erroneously set, but the power consumed in switching the plurality of broadcast channels separately and setting the current time can be saved.

On the other hand, if the current time correction mode is set (S101), the controller 170 can determine whether the apparatus enters a warm standby mode (S105).

If the controller 170 does not enter the warm standby mode, the current time calibration may not be executed (S107).

If the current time is set by controlling the tuner 131 to switch a plurality of broadcast channels in the warm standby mode, the controller 170 may reduce power consumption and may not interfere with the user's viewing. However, if it is set to 'channel setting' or 'manual setting' as described in FIG. 9, the current time calibration mode may be executed without entering the warm standby mode. The 'channel setting' also does not interfere with the user's viewing, and is performed simultaneously with other operations to reduce power consumption. In the case of 'manual setting', the user sets the execution time.

When the controller 170 enters the warm standby mode, the currently selected broadcast channel information can be stored (S109).

The control unit 170 may store information on a current channel before switching a plurality of broadcast channels. This is to return to the original channel after setting the current time since it is switched to another broadcasting channel for setting the current time.

The control unit 170 can sequentially switch a plurality of broadcast channels (S113).

The control unit 170 may control the tuner 131 to sequentially switch a plurality of broadcast channels. According to an exemplary embodiment, the controller 170 may sequentially switch all broadcast channels to receive broadcast signals from all switchable broadcast channels. According to another embodiment, the controller 170 may switch only a predetermined number of broadcast channels among all switchable broadcast channels. According to another embodiment, the controller 170 can switch only a predetermined number of broadcast channels among all switchable broadcast channels. According to another embodiment, the control unit 180 can switch only the predetermined trust channel when the trust channel is set.

The control unit 170 can receive a plurality of broadcast signals from each broadcast channel to be switched (S115).

Specifically, when all the broadcast channels are sequentially switched, the controller 170 can receive all broadcast signals from all the broadcast channels. Alternatively, when the control unit 170 switches to only a predetermined ratio or a predetermined number of broadcast channels, it is possible to receive a plurality of broadcast signals from the switched broadcast channel or a predetermined number of broadcast channels. Alternatively, when the control unit 170 switches only the predetermined trust channel, the control unit 170 can receive the broadcast signal from the established trust channel.

The control unit 170 can acquire a plurality of current time information from each of the plurality of received broadcast signals (S117).

Each of the plurality of broadcast signals may include current time information. The control unit 170 may obtain the current time information from each of the broadcast signals and obtain a plurality of the current time information.

The storage unit 140 may store a plurality of pieces of the acquired current time information.

The control unit 170 may set the current time according to the current time information that most matches among the plurality of pieces of the current time information acquired (S119).

The control unit 170 may analyze the plurality of acquired current time information. Specifically, the control unit 170 compares the acquired current time information with each other to obtain the current time information that most closely matches the current time information, and sets the current time information to the current time.

Alternatively, the control unit 170 may count the current time indicated by the obtained plurality of pieces of current time information to obtain the current time with the highest frequency, thereby obtaining the most matching current time information. For example, the control unit 170 counts the current time indicated by the plurality of current time information, counts 10:50 on March 31, 17, 100 times, and counts March 31, When counting, you can set 10:50 on March 31, 17 to the current time.

The control unit 170 may classify the broadcast channel that transmitted the current time information that is out of the predetermined range from the set current time as an error channel (S121).

The control unit 170 may obtain current time information that differs from the set current time and a preset range and classify the broadcast channel that transmitted the obtained current time information as an error channel.

Alternatively, the control unit 170 may classify the broadcast channel that transmitted the current time information counted at a time other than the set current time as an error channel as a result of counting the current time.

11 is an exemplary diagram for explaining an error channel classification method according to an embodiment of the present invention.

As shown in FIG. 11, the control unit 170 can sequentially switch a plurality of switchable broadcast channels. For example, the control unit 170 can sequentially switch the channels 1-1 to 42-1. The control unit 170 may receive the current time information from each broadcast channel while switching the broadcast channel to obtain the current time.

The current time may be different depending on the time at which the broadcast channel is switched. That is, since a plurality of broadcast channels are not switched at the same time, the current time can be acquired more slowly in case of a broadcast channel to be switched later. In this case, the control unit 170 can count the current time within the predetermined range as the current time that coincides with the current time. The control unit 170 may set the current time to the current time obtained in the broadcast channel that has been most recently switched.

The control unit 170 may set the broadcast channel that transmitted the current time information that is outside the predetermined range to the set current time as the error channel. Here, the predetermined range may be set as a default in the display device 100. [ The predetermined range may be set differently according to the number of broadcast channels to be switched. For example, the predetermined range may mean within 5 minutes based on the set current time. This is because it does not take much time to switch the broadcasting channel. In the example of FIG. 11, channels 9-1 and 41-1 may be classified as faulty channels.

Again, Fig. 7 will be described.

The control unit 170 may set the current time while classifying the plurality of broadcast channels, classify the error channel, and re-route the broadcast channel according to the stored broadcast channel information (S123).

The control unit 170 may re-route the broadcast channel based on the broadcast channel information stored in step S109 so that the broadcast channel that the user last viewed can be displayed again.

When the current time correction mode is set to ON, the control unit 170 can repeat the same operations as in S105 to S123 or the same operations as S109 to S123 at predetermined intervals.

Next, Fig. 12 is a flowchart showing a current time correction method according to the first embodiment of the present invention.

First, the controller 170 may classify the error channel in the manner as described with reference to FIG. 7, and store the error channel in the storage unit 140.

Thereafter, the controller 170 may receive the channel change command (S201).

The user can receive the channel change command at least one time while watching the broadcast output to the display device 100. [

The control unit 170 may determine whether the changed broadcast channel is an error channel (S203).

If the changed broadcast channel is determined to be an error channel, the control unit 170 may not update the current time (S205).

Accordingly, the display device 100 can prevent the current time from being erroneously set according to erroneous current time information.

Meanwhile, if the changed broadcast channel does not correspond to the error channel, the controller 170 may update the current time with the current time information according to the changed broadcast channel (S205).

As a result, the broadcast signal can be received from the remaining broadcast channels other than the broadcast channel in which the error exists, and the current time can be continuously updated.

13 is an exemplary view showing an output screen according to the current time correction method described with reference to FIG. Specifically, Fig. 13 (a) shows an output screen according to the conventional method of setting the current time, and Fig. 13 (b) shows an output screen according to the current time setting method according to the embodiment of the present invention.

In the example shown in Fig. 13, the clock 401 can represent the actual current time, and the K broadcasting station transmitting the 9-1 channel broadcasting signal can transmit the error-present time information.

Referring to FIG. 13 (a), since the conventional display device 100 sets the current time on the basis of the current time information received on the changed broadcast channel each time the channel is changed, the current time You can set it wrong at 7:57 AM.

However, referring to FIG. 13 (b), the display apparatus 100 according to the embodiment of the present invention can determine whether the changed broadcast channel is an error channel when the channel is changed. The control unit 170 may not update the current time based on the current time information received from the K broadcasting station when the changed 9-1 channel is an error channel. Accordingly, the controller 170 can continuously maintain the current time of 9:00, which is set as the current time information received from the channel before the channel change.

Therefore, according to the embodiment of the present invention, there is an advantage that it is possible to prevent a case where the current time is erroneously set by receiving a broadcast signal in which an error exists.

Next, Fig. 14 is a flowchart showing a current time correction method according to the second embodiment of the present invention.

The control unit 170 may receive the channel change command (S301).

If the channel change command is received, the controller 170 may compare the current time information received from the previous broadcast channel with the current time information received from the changed broadcast channel (S303).

If the current time information received on the previous broadcast channel matches the current time information received on the changed broadcast channel, the controller 170 may update the current time with the current time information according to the changed broadcast channel (S305).

That is, if the current time information received in the previous broadcast channel matches the current time information received in the changed broadcast channel, the controller 170 can set the current time based on the current time information received through the changed broadcast channel.

On the other hand, if the current time information received in the previous broadcast channel is different from the current time information received in the changed broadcast channel, the controller 170 may determine that an error exists in the current time information according to the changed broadcast channel ( S307).

According to another embodiment, when the controller 170 receives the channel change command, it changes the broadcast channel. If the current time information included in the broadcast signal received from the changed broadcast channel is different from the preset current time, The current time information can be judged as an error exists.

The control unit 170 may display a message confirming whether to perform the current time calibration (S309).

Next, Fig. 15 is an exemplary diagram for explaining a message for confirming whether or not the current time correction is performed according to the embodiment of the present invention.

As shown in FIG. 15, if it is determined that there is an error in the current time information received through the changed broadcast channel, the display unit 180 displays a message 501 confirming whether to perform the current time correction Can be displayed.

For example, message 501 may indicate that there is an error in the current time information received over the changed broadcast channel. In addition, the message 501 may include an icon 502 (503) that determines whether or not to perform the current visual correction.

When the message 501 is displayed as described above, the user can immediately check whether there is an error in the current time according to the current channel. In addition, the user has the advantage of being able to determine whether to perform a current visual correction immediately if there is an error in the current time according to the current channel, or later to perform a current visual correction.

Again, Fig. 14 will be described.

The control unit 170 can determine whether the current time correction execution command has been received (S311).

The control unit 170 can determine whether the current time correction execution command has been received through the icon 502 or 503 which determines whether or not to execute the current time correction as shown in Fig.

If it is determined that the current time calibration execution command is received, the control unit 170 can perform the current time calibration (S313).

Specifically, when the control unit 170 receives the execution instruction of the current time calibration, it can execute steps S109 to S121 of FIG. That is, when the control unit 170 receives the execution command of the current time correction, it can sequentially change a plurality of broadcast channels, set the current time, and classify the error channel.

On the other hand, if it is determined that the current time calibration execution command is not received, the controller 170 may maintain the predetermined current time (S315).

The control unit 170 may not update the current time information received via the current channel unless an execution command of the current time correction is received. That is, the controller 170 can maintain the previously set current time. Therefore, the display unit 180 outputs a screen as described with reference to FIG. 13 (b), and can provide a correct current time to the user.

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)

A tuner for receiving a broadcast signal from a broadcast channel;
A display unit for displaying a broadcast screen according to the received broadcast signal;
A control unit sequentially switching a plurality of broadcast channels to receive a plurality of broadcast signals from each switched broadcast channel and obtaining a plurality of current time information from each of the plurality of broadcast signals; And
And a storage unit for storing the obtained plurality of current time information,
The control unit
And sets the current time according to the current time information which most matches among the stored plurality of pieces of current time information. The method according to claim 1,
The control unit
Wherein the display unit is turned off and the plurality of broadcast channels are sequentially switched in a warm standby mode in which the power of the display device is turned on, and the plurality of broadcast signals are received to set the current time. The method according to claim 1,
The control unit
If the current time information received through the broadcast channel before the change is different from the current time information received through the changed broadcast channel, the current time information according to the changed broadcast channel is changed to an error And judges that it exists. The method of claim 3,
The control unit
And if there is an error in the current time information according to the changed broadcast channel, maintains a preset current time. The method of claim 3,
The control unit
And updates the current time with current time information according to the changed broadcast channel if the current time information included in the broadcast signal received from the changed broadcast channel coincides with the current time information received through the broadcast channel before the change. The method according to claim 1,
The control unit
And changes the broadcast channel upon receiving the channel change command and displays an icon for determining whether to perform the current time correction when the current time information included in the broadcast signal received from the changed broadcast channel is different from the set current time. The method according to claim 1,
The plurality of broadcast channels sequentially switching
A display device comprising all switchable broadcast channels. The method according to claim 1,
The plurality of broadcast channels sequentially switching
And a broadcast channel of a predetermined ratio among all switchable broadcast channels. The method according to claim 1,
The control unit
And when the trust channel is set, receives the broadcast signal from the preset trust channel and sets the current time according to the current time information included in the received broadcast signal. The method according to claim 1,
The control unit
A display unit for storing current broadcast channel information in the storage unit before sequentially switching the plurality of broadcast channels, and for selecting a broadcast channel corresponding to the stored broadcast channel information after sequentially switching the plurality of broadcast channels, .

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