KR20070113892A - Method and apparatus for the teletext realizing of image display device - Google Patents

Abstract

An apparatus and a method for realizing the teletext of an image display device are provided to enable to a user to know a channel information by displaying information, indicating that teletex is included or not, on a screen. A user selects a desired channel. It is determined if teletext information exists in the selected channel(S403). The teletext information, the reception state of the teletext information, and information about another channel are displayed according to the existence of the teletext information. If the teletext information of a corresponding channel exists, the video and the teletext information of the channel are displayed(S409). Channel movement is controlled based on the displayed information about another channel.

Description

Teletext realization apparatus and method for an image display device {Method and apparatus for the Teletext realizing of image display device}

1 illustrates an example in which teletext information data is loaded into a VBI section of a general CVBS signal.

FIG. 2 is a diagram illustrating an example of displaying on a screen when executing teletext on a channel without teletext information according to the prior art; FIG.

3 is a block diagram showing an apparatus for implementing teletext of an image display apparatus according to the present invention;

4A to 4B illustrate an example in which teletext information is displayed on a screen in a teletext implementing apparatus of an image display device according to the present invention.

5 is a flowchart for explaining a method of implementing teletext of an image display device according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: tuner 120: teletext processing unit

130: video decoder 140: image processing unit

150: display unit 160: key input unit

170: control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly, to an image display capable of displaying a presence or absence of teletext (text multicasting) information on a broadcasting channel watched by a user and a channel list in which teletext information exists in another channel. A device and method for implementing teletext of a device.

In general, video display devices are typical of televisions, and televisions have been changed from analog to digital televisions, which are rapidly replacing conventional analog televisions. Today, as a transition to a complete digital broadcast, most digital televisions on the market today fully support the reception of existing analog signals in addition to the reception of digital signals. In addition, the digital television can display the received analog and digital signals on the screen in various ways using a multi-image display method consisting of a main screen and a sub-screen such as PIP (Picture In Picture) and POP (Picture Out Picture). .

Such televisions have added additional functions as a way to enhance the convenience of the viewer. One such additional function is a teletext (text multicasting) function that receives various text broadcasts and provides them to the user.

Here, the teletext function is an example of data broadcasting information carried on a video signal among television broadcasting signals. In analog broadcasting, the teletext function is displayed on a vertical blanking interval (VBI) of a composite video baseband signal (CVBS). It detects additional information such as teletext and caption and provides it to the user through data processing.It mainly provides information such as price information, stock quotes, news, weather forecast, program guide, program details and traffic guide. give.

Hereinafter, a teletext implementation method of an image display apparatus according to the prior art will be described with reference to the accompanying drawings.

FIG. 1 is a diagram illustrating an example in which data for teletext information is loaded in a VBI section of a general CVBS signal, and FIG. 2 is a screen for executing teletext on a channel without teletext information according to the prior art. It is a figure which shows the example displayed.

General teletext information resides in lines 6-22 and 318-335 in the VBI section of the CVBS signal. As shown in FIG. 1, a color burst exists after the start of the horizontal synchronization signal, and then information such as clock run-in and framing code is used to convert the bit string information value. Exist. When the user wants to see the teletext information, a framing code for analyzing the existence of the teletext data is analyzed and the teletext data is displayed on the screen if it exists, and the screen is blacked if it does not exist.

That is, as shown in FIG. 2, each page of the teletext information is composed of 32 packets (X0 to X31), each of which has a packet number (10) and a FLOP (Full Level) having page number information. One Feature) A page navigation packet that defines five pages among the six built-in link pages in the system on the remote control keys (RED, YELLOW, CYAN, INDEX) so that the user can switch directly to the page. ) Is always displayed.

However, when the teletext is executed on a channel in which the teletext information does not exist according to the related art, the screen displayed on the screen is black as shown in FIG. 2, so that the user does not have the teletext information. Therefore, it is inconvenient to check whether the screen does not display or the screen does not come out due to the failure of the television set.

In addition, when a user wants to move teletext to another channel, it is inconvenient to exit teletext, move to a corresponding channel desired by the user, and then execute teletext again.

The present invention has been made to solve such a problem, and an object of the present invention is to enable a user to know whether teletext information exists for a corresponding channel before entering teletext.

In addition, the user has another purpose to prevent the user from being confused by displaying a message according to when the teletext is executed in the channel where the information does not exist.

In addition, when there is no teletext information in the channel being viewed by the user, another purpose is to allow the user to easily move to an adjacent channel in which the teletext information exists.

An apparatus for implementing teletext of an image display apparatus according to the present invention for achieving the above object includes a key input unit for inputting a user's request command and a broadcast signal received through the tuner in the image display apparatus having a tuner. A teletext processor for signal processing to detect and display teletext information, a display unit for displaying teletext information according to whether a video signal and teletext of a channel selected by a user are included through the key input unit, and the key The control unit determines whether the teletext information exists in the channel selected by the user through the input unit, and controls to display the teletext information, whether the teletext information is received and other channel information receiving the teletext information through the display unit. And a control scene of the controller In accordance with a user picture signal and the teletext information processed by the teletext processor of the channel selected it is composed including an image processor for processing the signal so that the display unit has a display that feature.

Preferably, the controller controls the display unit to display a corresponding message indicating that the teletext information does not exist in the corresponding channel if the user does not have the teletext information of the corresponding channel through which the user wants to view the teletext information. There is a characteristic.

More preferably, when the teletext information does not exist in a corresponding channel for which the user wants to view the teletext information, the controller detects a channel in which the teletext information exists among the channels close to the current channel through the teletext processor. have.

More preferably, the controller controls channel movement when the user selects one of the channel lists in which the teletext information exists among the channels close to the searched current channel, and the image and the teletext information of the corresponding channel are moved. It is characterized by controlling to be displayed through the display unit.

The teletext implementation method of an image display apparatus according to the present invention includes selecting a channel desired by a user, determining whether teletext information exists in the selected channel, and depending on whether teletext information exists. And displaying the teletext information, the reception state of the teletext information, and other channel information, and controlling the channel movement with reference to the displayed other channel information.

Preferably, the step of displaying the teletext information according to the presence of the teletext information comprises the step of simultaneously displaying the image and the teletext information of the channel if the teletext information of the channel as a result of the determination It has its features.

More preferably, the step of displaying the reception state of the teletext information according to the presence of the teletext information may include displaying the message indicating that the teletext information of the corresponding channel does not exist if the teletext information of the corresponding channel does not exist. It is characterized by including the step of displaying in the negative pre-set area.

More preferably, the step of displaying other channel information according to the presence of the teletext information includes searching for a channel in which teletext information exists among the corresponding channel and the adjacent channel when the channel selected by the user does not include the teletext information. And displaying the searched channel list.

More preferably, the step of controlling channel movement with reference to the displayed other channel information includes selecting a desired channel from the displayed other channel information, moving to the selected channel, and image and teletext information of the corresponding channel. And a step of displaying the received image being viewed if the user does not want to move the channel to the adjacent channel.

Hereinafter, an apparatus and method for implementing teletext of an image display device according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram illustrating an apparatus for implementing teletext of an image display apparatus according to the present invention, and FIGS. 4A to 4B are examples in which teletext information is displayed on a screen in an apparatus for implementing teletext of an image display apparatus according to the present invention. 5 is a flowchart illustrating a step-by-step method for implementing teletext of an image display device according to the present invention.

As shown in FIG. 3, the apparatus for implementing teletext of an image display apparatus according to the present invention includes a tuner 110 that tunes a broadcast signal of a channel desired by a user among broadcast signals received through an antenna, and the tuner 110. Teletext processing unit 120 for detecting and displaying the teletext information from the broadcast signal received through the display, and the image input through the tuner 110 and the teletext processing unit 120 A video decoder 130 for decoding a text signal, an image processor 140 for signal processing such that image signals and teletext information of a corresponding channel selected by the user decoded by the video decoder 130 can be displayed; Display the teletext information according to whether the image signal and the teletext of the channel selected by the user are included through the image processor 140. To determine whether or not the teletext information is present in a channel selected by the user through the display unit 150 for inputting the signal, a key input unit 160 for inputting a user's request command, and the key input unit 160. And a controller 170 for controlling text information, teletext information reception, and other channel information receiving teletext information to be displayed on the display unit 150.

The operation of the apparatus for implementing teletext of the image display device according to the present invention configured as described above is as follows.

First, when a user inputs a power-on command through the key input unit 160, the controller 170 outputs a control signal to the tuner 110 so that a program of a channel selected by the user can be output.

Then, the tuner 110 tunes to a channel desired by the user, and the teletext processor 120 detects a teletext signal if a teletext signal exists among the broadcast signals of the channel tuned through the tuner 110. The signal is processed and then input to the video decoder 130.

The video decoder 130 decodes an image input through the tuner 110 and a teletext signal processed through the teletext processing unit 120, and the image processing unit 140 controls the video decoder 130. Image and teletext information of the corresponding channel decoded through the signal processing so that each can be displayed in a predetermined region (eg, PIP, POP, etc.) of the display unit 150, the display unit 150 is the image processing unit ( The video signal and the teletext information of the corresponding channel, which have been processed through the signal 140, are output.

In addition, the controller 170 determines whether a teletext signal exists among the broadcast signals of the channel tuned through the tuner 110. Therefore, if the teletext information of the corresponding channel selected by the user exists, the control unit outputs a control signal to be displayed through the display unit 150. If the teletext information of the corresponding channel selected by the user does not exist, the teletext information of the corresponding channel exists. The message "NO TELETEXT" is displayed on the display unit 150.

Therefore, the user can know in advance whether the teletext information exists in the channel that he is viewing, thereby preventing the display of the teletext information in the channel without the teletext information in advance.

In addition, the controller 170 detects a channel in which teletext information exists among channels adjacent to the channel in which the teletext information currently being viewed does not exist based on the teletext information input through the teletext processor 120. The control signal is output to be displayed through the display unit 150.

Therefore, the user can easily move to the adjacent channel where the teletext information exists and view the teletext information.

That is, as shown in FIG. 4A, if there is no teletext information about the screen 210 currently being viewed, the message “NO TELETEXT” 220 and the channel list 230 in which the teletext information exists among adjacent channels are displayed. Display together.

Here, the user can know in advance whether the teletext information exists in the current channel, so that unnecessary actions can be prevented in advance, and through the key input unit 160, the user can easily enter the channel in which the teletext information exists among the adjacent channels. I can move it.

If the user wants to view the teletext information of the corresponding channel even if the teletext information does not exist, as shown in FIG. 4B, the image 310 being watched and the teletext information screen 320 are displayed. In addition, the message “NO TELETEXT” 330 may be displayed on the teletext information screen 320 to prevent confusion about whether the teletext information exists on the channel being watched by the user and whether the teletext board is defective.

In addition, by displaying a channel list 340 in which teletext information exists among channels adjacent to the current channel on the screen of the video 310 being viewed, the user can easily move to another channel in which teletext information exists.

In the teletext implementation method of the image display device according to the present invention configured as described above, referring to FIG. 5, first, it is determined whether a user inputs a power-on command (S401).

Subsequently, the determination result (S401), when the user inputs a power-on command to display the received image (S402).

In operation S403, it is determined whether the teletext information of the corresponding channel that the user is watching exists.

Subsequently, if the teletext information exists in the corresponding channel that the user is watching, the determination result (S403) determines whether the user desires to view the teletext information (S404).

As a result of the determination (S404), when the user desires to view the teletext information, the image and the teletext information of the corresponding channel are displayed (S405).

In addition, if the teletext information does not exist in the corresponding channel that the user is watching, the determination result (S403), and displays a "NO TELETEXT" message and the adjacent teletext channel on the screen (S406). That is, by informing the user of the presence or absence of the teletext information of the corresponding channel in advance, it is to prevent unnecessary actions such as displaying the teletext information on the channel where the teletext information does not exist.

Subsequently, it is determined whether the user moves to the adjacent channel where the teletext information displayed on the screen exists (S407).

As a result of the determination (S407), if the user wants to move to the adjacent channel where the teletext information exists, the user selects a channel to be moved from the channel list displayed on the screen (S408).

Subsequently, in step S408, an image of the selected channel and corresponding teletext information are displayed (S409).

In addition, the determination result (S407), if the user does not want to move to the adjacent channel displays the image being watched (S410).

Subsequently, if the user inputs a power off command, the process ends (S411).

On the other hand, if the determination result (S404), the user does not want to view the teletext information, the process enters the step (S411).

As described above, the apparatus and method for implementing teletext of an image display device according to the present invention have the following effects.

First, by displaying the presence or absence of the teletext information for the channel before the user enters the teletext, the user can prevent unnecessary behavior (such as entering the teletext on a channel without the teletext information) in advance. have.

Second, by displaying a message "NO TELETEXT" when the user executes teletext on a channel where teletext does not exist, the user can prevent confusion about the presence or absence of the teletext for the channel and the failure of the television set.

Third, by moving the channel using the adjacent channel list displayed on the screen, the user can remove the hassle of moving the channel to provide more convenience to the user.

Claims (9)

In a video display device having a tuner, A key input unit for inputting a user's request command; A teletext processing unit for detecting and displaying teletext information of the broadcast signals received through the tuner to enable display; A display unit for displaying teletext information according to whether a video signal and teletext of a channel selected by a user are included through the key input unit; It is determined whether the teletext information exists in the channel selected by the user through the key input unit, so that the corresponding teletext information, whether the teletext information is received, and other channel information receiving the teletext information can be displayed on the display unit. A control unit; And, And an image processor configured to signal-process the image signal of the corresponding channel selected by the user according to the control signal of the controller and the teletext information processed by the teletext processor to display the display unit. Teletext implement device. The method of claim 1, The control unit If there is no teletext information of a corresponding channel for which the user wants to view the teletext information through the key input unit, an image display of controlling that the corresponding message indicating that the teletext information does not exist in the corresponding channel is displayed. Teletext implementation of the device. The method of claim 1, The control unit If the teletext information does not exist in the corresponding channel for which the user wants to view the teletext information, the teletext processor detects a channel having teletext information among the channels close to the current channel through the teletext processor. Text implementation device. The method of claim 1, The control unit If the user selects one of the channel lists in which the teletext information exists among the channels close to the searched current channel, the channel movement is controlled, and the image and the teletext information of the moved channel are displayed on the display unit. Teletext implementation of the video display device characterized in that the control. In the teletext implementation method of the image display device having a display unit, Selecting a desired channel by the user; Determining whether teletext information exists in the selected channel; Displaying corresponding teletext information, a reception state of teletext information, and other channel information according to whether the teletext information exists; And, And controlling the movement of the channel with reference to the other channel information to be displayed. The method of claim 5, The step of displaying the teletext information according to the presence or absence of the teletext information And displaying the image and the teletext information of the channel at the same time if the teletext information of the channel exists as a result of the determination. The method of claim 5, The step of displaying the reception status of the teletext information according to the presence of the teletext information And if the teletext information of the corresponding channel does not exist as a result of the determination, displaying a message indicating that the teletext information of the corresponding channel does not exist in the preset area of the display unit. Way. The method of claim 5, The step of displaying the other channel information according to the presence of the teletext information  If the channel selected by the user does not include teletext information, searching for a channel in which teletext information exists among the corresponding channel and adjacent channels, and displaying the searched channel list. Teletext implementation method of image display device. The method of claim 5, Controlling channel movement with reference to the displayed other channel information Selecting a desired channel from the other channel information displayed by the user, moving to the selected channel to display image and teletext information of the corresponding channel, and viewing the channel if the user does not want to move to an adjacent channel Teletext implementation method of the image display device comprising the step of displaying the received image being.

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