KR100407978B1 - Method and apparatus for processing teletext of display device - Google Patents

Abstract

The present invention relates to a teletext processing apparatus and method of a video display device that enables a user to more conveniently obtain teletext information by displaying teletext information in the form of a PIP while performing TV viewing and PC functions. A first signal processor for receiving a text signal and processing the signal into a displayable signal on a screen, a reduction unit for reducing a teletext signal output from the first signal processor to a PIP size, and an input image signal or an external input A second signal processor which receives a PC video signal to be processed and displays the signal as a displayable signal on the screen, and a mixing unit for disposing the video signal output from the reduction unit to a video signal output from the second signal processor at a predetermined position; And, the first scene to allow the user to receive teletext information. A microcomputer for outputting a control signal so that the teletext signal processed through the processing unit can be displayed in a PIP form at a corresponding position according to a user's request, and for displaying the signal processed by the mixing unit according to the control signal of the microcomputer It is configured to include a display unit, and can display teletext signal in PIP form according to user's request, so that more information can be provided, and multi-page teletext information can be displayed in multi-PIP format. There is an effect that can use a variety of teletext information conveniently.

Description

Method and apparatus for processing teletext of display device

The present invention relates to an image display device, and more particularly, to an apparatus and method for implementing a teletext of an image display device to display teletext information through a picture in picture (PIP).

In general, teletext is a form of information designed to implement information necessary for a user on a TV screen through a TV broadcasting network. A CVBS (returning to the beginning of the screen to form a next screen after completing one screen) It is transmitted through the vertical sync interval of Composite Video Burst Signal.

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

FIG. 1 is a block diagram illustrating a teletext display apparatus of an image display apparatus according to the prior art, and FIG. 2 is a diagram illustrating an example of switching to a teletext screen from an image display apparatus.

As shown in FIG. 1, the teletext display apparatus of the image display apparatus according to the related art receives a TV image signal and a PIP generator 10 for generating a PIP, and receives teletext information from the TV image signal. A teletext decoder 20 for decoding, a microcomputer 30 for outputting a control signal to select a signal generated by the PIP generator 10 or the teletext decoder 20 according to a user's request; A switching unit 40 for selecting an output signal of the PIP generation unit 10 or the teletext decoder 20 according to the control signal of the microcomputer 30, a signal selected from the switching unit 40, and a reception unit; The image processing unit 50 processes the TV image signal to be displayed on the screen, and the display unit 60 displays the signal processed by the image processing unit 50.

The teletext processing apparatus of the image display apparatus according to the related art configured as described above is shown in FIG. 2 by turning off the currently viewed TV screen by receiving a teletext signal by operating a remote controller (not shown) key to view the teletext. As shown, teletext could not be seen in the form of a PIP screen.

As described above, the teletext processing apparatus of the image display apparatus according to the related art can turn off the TV screen being viewed and receive and display the teletext signal so that the user can view the teletext while viewing the teletext. There was no problem causing inconvenience to the user.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. Teletext processing of an image display device that enables a user to obtain teletext information more conveniently by displaying teletext information in the form of PIP while performing TV viewing and PC functions. It is an object of the present invention to provide an apparatus and method.

1 is a block diagram showing a teletext processing apparatus of an image display apparatus according to the prior art;

2 is a diagram illustrating an embodiment of a teletext processing method of an image display apparatus according to the related art.

3 is a block diagram showing a teletext processing apparatus of an image display apparatus according to the present invention.

4 is a diagram showing an embodiment of a teletext processing method of an image display device according to the present invention;

5 is a flowchart illustrating a teletext processing method of an image display device according to the present invention.

6A and 6B illustrate a first embodiment of a teletext processing method of an image display device according to the present invention.

7 is a flowchart illustrating still another example of a method for processing teletext of an image display device according to the present invention.

8 to 10 are diagrams illustrating second to fourth embodiments of a teletext processing method of an image display device according to the present invention.

11 is a view showing a remote control of the image display apparatus according to the present invention;

Explanation of symbols for main parts of the drawings

100: first signal processor 101: teletext decoder

102: video decoder 103: video capture

200: video pixel reduction unit 300: second signal processing unit

301: PC / Video Capture 302: Scaler

400: mixing unit 500: microcomputer

600: storage unit 700: display unit (TV monitor)

Teletext processing apparatus of an image display device according to the present invention for achieving the above object is a first signal processing unit for receiving a teletext signal from the input image signal and processing it as a displayable signal on the screen, and the first signal A reduction unit for reducing the teletext signal output from the processing unit to a PIP size, a second signal processing unit which receives an input image signal or an externally input PC image signal and processes it into a displayable signal on the screen; 2 is a mixing unit for arranging the video signal output from the reduction unit at a predetermined position in the video signal output from the signal processing unit, and the teletext signal processed through the first signal processing unit to receive teletext information from the user According to the request of the control signal so that it can be displayed in the form of PIP Depending on the microcomputer, a control signal of the microprocessor which power is composed by including a display for displaying the signals processed in the mixing section has its features.

Teletext processing method of the image display device according to the present invention for achieving the above object is the step of processing the teletext signal from the input image signal to the displayable signal on the screen when the user selects the teletext signal view, and Reducing the processed signal to a size desired by the user, mixing the main video signal and the reduced teletext signal, storing the mixed signal, and storing the stored mixed signal at a location desired by the user. It is characterized by including the step of displaying.

Hereinafter, a teletext processing apparatus and method 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 showing a teletext processing apparatus of an image display apparatus according to the present invention, FIG. 4 is a view showing an embodiment of a teletext processing method of an image display apparatus according to the present invention, and FIG. FIG. 1 is a flowchart illustrating a teletext processing method of an image display device.

As shown in FIG. 3, the teletext processing apparatus of the image display apparatus according to the present invention includes a first signal processor 100 for receiving a teletext signal from an input image signal and processing the signal as a displayable signal on a screen; A video pixel reduction unit 200 for reducing the teletext signal output from the first signal processing unit 100 to a PIP size, and an input image signal or a PC image signal input from the outside can be displayed on the screen. A mixing unit for arranging the second signal processing unit 300 to process the signal and the video signal output from the video pixel reduction unit 200 to the video signal output from the second signal processing unit 300 at a predetermined position ( 400 and the teletext signal processed by the first signal processor 100 to receive the teletext information, is located at the position P according to the user's request. The microcomputer 500 for outputting a control signal to be displayed in the IP form, the storage unit 600 for storing the video signal and teletext signal mixed in the mixing unit 400, and the microcomputer 500 of the According to the control signal is composed of a display unit 700 for displaying the signal processed in the mixing unit as shown in FIG.

The first signal processor 100 receives a teletext signal from an input TV image signal and outputs the teletext signal as a teletext R, G, or B signal, and an output signal of the teletext decoder 101. And a video decoder 102 that receives a TV video signal and processes the text / video Y, U, and V signals, and a video capture 103 that receives an output signal of the video decoder 102 and converts the signal into a digital signal. do.

The second signal processing unit 300 receives a TV image signal output from the first signal processing unit 100 and a PC signal input from the outside and converts the digital signal into a digital signal, and the PC / The scaler 302 is configured to receive the digital signal converted by the video capture 301 and output the resolution and size supported by the corresponding video display device.

The operation of the teletext processing apparatus of the video display device according to the present invention configured as described above is as follows.

When the user wants to see a teletext signal, the microcomputer 500 outputs a command to the first signal processor 100 to decode the text signal included in the video signal.

The teletext decoder 101 of the first signal processor 100 extracts a teletext signal from a video signal input according to the control signal of the microcomputer 500, decodes the teletext signal into text R, G, and B signals, and decodes the decoding signal. The text R, G, and B signals are input to the video decoder 101 and converted into Y, U, and V signals.

The Y, U, and V signals converted by the video decoder 102 are converted into digital signals through the video capture 301, and the converted signals are input to the video pixel reduction unit 200 to reduce image pixels. It can be displayed in PIP form by reducing the amount of information while reducing the horizontal and vertical size.

Also, in order to display the main video signal, the PC / video capture 301 receives an input video signal or a PC video signal received through an external PC, converts the digital video signal into a digital signal, and outputs the converted digital signal. The digital signal output from the / video capture 301 is input and output to match the resolution and size provided by the corresponding display unit 700.

Then, the mixing unit 400 overlays the PIP teletext signal reduced by the video pixel reduction unit 200 on the image signal output from the scaler 302 according to a position to be displayed. In addition, the mixing unit 400 stores the PIP in the storage unit 600 according to a position to display the PIP.

At this time, before storing in the storage unit 600, it is determined where to display the PIP signal, and the start and end addresses are overlaid on the reduced PIP signal according to the set size, and the mixed image stored in the storage unit 600. The signal is displayed in the form as shown in FIG.

In the teletext processing method of the image display device according to the present invention configured as described above, referring to FIG. 5, the teletext information is extracted from the input video signal and decoded (S1).

The decoded teletext information is stored and reduced to a desired PIP size (S2 to S3).

Then, the teletext signal of the reduced PIP size is mixed with the background screen and an area to be displayed is designated (S4).

Subsequently, the mixed video signal is stored and output to the display unit (S5 to S6).

Then, if the number that the user wants to display is displayed, the process is terminated. Otherwise, the process returns to the step S2 (S7).

As shown in FIG. 6, in the teletext processing method using the above method, the teletext information stored in different areas is displayed at a designated position to show one completed screen.

Meanwhile, another teletext processing method using multi-PIP will be described with reference to FIG. 7. First, teletext information is decoded from an input video signal (S11).

The teletext index page is searched for, and the corresponding page is decoded and stored (S12 to S13).

The stored page is reduced to a PIP size (S14).

Subsequently, the reduced PIP is designated and then mixed with the background screen (S15).

The mixed signal is stored and then displayed on the display unit (S16 to S17).

The page corresponding to the color key selected by the user is searched for and displayed at the corresponding position (S18 to S25).

In other words, if the key entered by the user is the key corresponding to the Red key, the page linked to the Red key is searched. If the key corresponds to the Green key, the page linked to the Green key is searched. Search for the page linked to the Yellow key if the key corresponds to the Yellow key, and search the page linked to the Cyan key if the key corresponds to the Cyan key.

An embodiment of a teletext processing method of an image display apparatus according to the present invention using such a method will be described below with reference to FIGS. 8 to 10.

As shown in FIG. 8, since the corresponding page linked to the page is displayed on the top index page having the main title, the contents of the information can be viewed immediately. For example, the screen is assumed assuming that the main title is weather information. The main page of is arranged as an index page in the center, and the pages linked to the upper left / right and the lower left / right are displayed in the PIP.

As shown in FIG. 9, the title page may be arranged on the upper left side, and the corresponding page may be matched to the numeric keys of the remote controller by zooming by simultaneously displaying subpages corresponding to the page or less having the main title. .

In addition, as illustrated in FIG. 10, the user may zoom in to zoom in on a desired page and check at a glance. The page may also be enlarged by matching the corresponding page with the numeric keys of the remote controller as illustrated in FIG. 11. have. In this case, the method of zooming the screen may be implemented by varying the reduction ratio in the process of reducing the PIP size.

That is, when the user inputs the text 601 key of the remote controller 600 illustrated in FIG. 11, the user decodes the teletext signal to be output on the screen, and when the user inputs the zoom 602 key, the desired portion is decoded. It can be displayed by zooming in. Red key 603, cyan key 604, yellow key 605, and blue key 606 can be displayed to display the linked page on the input page. 607), the index page can be displayed. If the PIP key 609 is pressed, the PIP is displayed. If the M key 608 is pressed, the index page is displayed.

As described above, the apparatus and method for teletext processing of an image display apparatus according to the present invention can display a teletext signal in PIP form according to a user's request, thereby providing more information. Since teletext information of a page can be displayed, a user can use various teletext information more conveniently.

Claims (7)

A first signal processor which receives a teletext signal from an input video signal and processes the teletext signal into a displayable signal on a screen; A reduction unit for reducing the teletext signal output from the first signal processor to a PIP size; A second signal processor which receives an input video signal or an external PC input video signal and processes the received video signal into a displayable signal on a screen; A mixing unit for disposing an image signal output from the reduction unit at a predetermined position in the image signal output from the second signal processing unit; A microcomputer for outputting a control signal such that the teletext signal processed by the first signal processor to be displayed by the user in order to receive teletext information can be displayed in a PIP form at a corresponding position according to a user's request; And, And a display unit for displaying a signal processed by the mixing unit according to the control signal of the microcomputer. The method of claim 1, And a storage unit for storing the video signal mixed by the mixing unit. The method of claim 1, The first signal processor A teletext decoder which receives a teletext signal from an input TV video signal and outputs the teletext signal as a teletext R, G, or B signal; A video decoder which receives the output signal and the TV image signal of the teletext decoder and processes them into text / video Y, U, and V signals; And a video capture for receiving the output signal of the video decoder and converting it into a digital signal. The method of claim 1, The second signal processor A PC / video capture for receiving a TV video signal output from the first signal processor and a PC signal input from the outside and converting the signal into a digital signal; And a scaler for receiving the digital signal converted by the PC / video capture and outputting the resolution and the size supported by the corresponding image display device. If the user selects to view the teletext signal, processing the teletext signal from the input image signal into a displayable signal on the screen; Reducing the processed signal to a size desired by a user; Mixing a main video signal and the reduced teletext signal; Storing the mixed video signal; And, And displaying the stored mixed video signal in a desired form at a desired position of the user. The method of claim 5, The displaying of the stored mixed signal in a desired shape at a desired position of the user may include And searching for a page linked to a key selected by a user, storing the searched page at a desired location, and then displaying the searched page. The method of claim 5, The displaying of the stored mixed signal in a desired shape at a desired position of the user may include Teletext processing method of a video display device characterized in that the step of displaying the page linked to the key selected by the user in a form of one or a plurality of PIP screen.