KR19990049805A - Apparatus and method for automatically adjusting video mode of television receiver - Google Patents

Abstract

The present invention relates to a technology for automatically adjusting the color, contrast, brightness, etc. for the image of the program according to the type of the broadcast program using the KBPS signal in the television receiver, KBPS interval signal from the received composite video signal A timing generator and a synchronization separator for detecting a synchronization signal; A data slicer for detecting original digital data in the detected KBPS interval signal; A processor for comparing and analyzing the digital data detected by the data slicer with previously stored KBPS data; A microcomputer generating a control signal based on the type information of the comparatively analyzed program; A program selector which decodes the control signal and outputs a control signal for each program type corresponding thereto; An image compensation value output unit which selects and outputs an image compensation value suitable for the type of a program currently being received based on the control signal for each program type; An on-screen signal generator for generating an on-screen signal corresponding to data supplied from the processor and outputting the on-screen signal in synchronization with a synchronization signal of the system; A video signal processor which adds a video compensation value supplied from the video compensation value output unit to a video signal to be received and outputs a video signal corrected to be suitable for a program type; It is composed of a water pipe driving unit for synthesizing the on-screen signal output from the on-screen signal generator side with the video signal output from the video signal processing unit to display on the water pipe.

Description

Apparatus and method for automatically adjusting video mode of television receiver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for automatically converting a video mode in a television receiver, and in particular, classifies a type of broadcast program received using a signal of a KBPS (KBPS) and sorts out the video according to the classification result. An apparatus and method for automatically adjusting a video mode of a television receiver suitable for automatically adjusting color, contrast, brightness, and the like.

In general, color, contrast, brightness, and the like, which determine an image mode in a television receiver, are previously set to an appropriate value according to the type of program (sports, movie, music, etc.) to be broadcast. Therefore, the user may set the image mode of the corresponding program to a sports mode, a movie mode, a music mode, etc. using a remote controller in order to more realistically watch the currently aired program.

1 is a block diagram of a KBPS built-in television receiver according to the prior art.

The broadcast video signal received through the antenna ANT is supplied to the tuner 101 where the channel desired by the user is tuned, and the video signal of the selected channel is transmitted to the video signal detector 102 from the baseband. The composite video signal is output. The composite video signal of the baseband is transmitted to the image signal processing unit 104, corrected, and then modulated so as to be displayed on the water tube (CRT) by the water tube driver (105) and displayed on the water tube (CRT). .

On the other hand, the video signal detected by the video signal detector 102 is transmitted to the KBPS decoder 103 on the other hand, the broadcast data is decoded therefrom, and then the water pipe (CRT) through the water pipe driver 105. ) Is displayed.

The operation of the image mode adjustment block according to the prior art will be described with reference to FIG. 3.

The image adjusters 203A, 203B, and 203C in the image adjuster 203 are set with values such as color, contrast, and brightness so as to be suitable for different types of programs.

When the user outputs a specific key signal through a key input device such as the remote control 201, the microcomputer 202 recognizes this and displays an image mode selection menu on the screen, and the user selects a desired item using a direction key or the like. Done.

At this time, the microcomputer 202 outputs an image adjuster selection signal to set the corresponding image mode according to the item selected by the user, and thereby the corresponding image among the image adjusters 203A, 203B, and 203C. The regulator is selected and the composite image signal CV is corrected through the image regulator and then transmitted to the water pipe driving unit 105.

On the other hand, Figure 4 shows the format of a typical KBPS data, as shown therein one horizontal line (63.5) μ In sec), the color burst area 401, the clock and synchronization signal 402, the header 403, and the data 404 are sequentially arranged. Here, the clock and synchronization signal 402 is to enable the decoder to recognize the KBPS signal, the header 403 defines the type of data, indicates the length of the data, etc., the data 404 is a broadcast station name, It shows program contents by time, type of program (sports, movie, music, etc.).

Meanwhile, the operation of a KBPS decoder built in a conventional television receiver will be described in more detail with reference to FIGS. 5 and 6.

The video signal output through the channel selected by the tuner 501 is supplied to the synchronous separator 502. At this time, when the KBPS on signal is transmitted from the microcomputer 503 to the synchronous separator 502, the synchronous separator ( In operation 502, the synchronization signal for detecting the KBPS signal is separated from the input image signal and transmitted to the data slicer 504.

Accordingly, the data slicer 503 selects the KBPS section from the video signal supplied from the tuner 501 using the separated synchronization signal, slices the data, recognizes the KBPS signal, and converts it into digital data. Output to the processor 505 side.

Accordingly, the processor 505 compares and analyzes the input KBPS data and outputs a signal corresponding to the data content to the on-screen signal generator 506, and the on-screen signal generator 506 is turned on corresponding to the input signal. A screen signal is generated and modulated according to the horizontal and vertical synchronization signals (Sync: H, Vsync) supplied from the system and output to the D / A converter 507 for the color signals (R, G, B).

Since the signal input to the D / A converter 507 is supplied through a series of digital processing processes, the signal is converted into analog red, green, and blue signals (R, G, B) and output.

However, in such a conventional television receiver, in order to enjoy the program more realistically, the user decides the type of the program to be aired directly each time, and then sets an image mode suitable for the type of the program. there was.

Accordingly, the technical problem to be achieved by the present invention is to classify the types of broadcast programs received using KBPS signals into sports, movies, music, and the like, and to determine the color, contrast, brightness, etc. of the images of the programs according to the classification results. The present invention provides an apparatus and method for automatically adjusting a video mode of a television receiver.

1 is a block diagram of a KBPS built-in television receiver according to the prior art.

2 is a block diagram of an automatic image adjusting apparatus according to the prior art.

3 is a flowchart of a video mode adjustment signal according to the related art.

4 is a data line format diagram of a KBPS signal.

5 is a detailed block diagram of a KBPS decoder according to the prior art.

6 is a signal flow diagram of a KBPS decoder according to the prior art.

7 is a block diagram of a video mode automatic adjustment apparatus for a television receiver according to the present invention;

8 is an image compensation value table for each program type applied to the present invention.

9 is a signal flowchart of a video mode automatic adjustment method of a television receiver according to the present invention;

*** Description of the symbols for the main parts of the drawings ***

701: tuner 702: video signal detector

703: KBPS Decoder 703A: Timing Generator and Synchronous Separator

703B: Data Slicer 703C: Processor

703D: Microcomputer 703E: Program Selection

703F: Image compensation value output unit 703G: On-screen signal generator

703H: D / A Converter

FIG. 7 is a block diagram illustrating an apparatus for automatically adjusting a video mode of a television receiver according to an embodiment of the present invention. As shown in FIG. 7, a channel required by a user for receiving a broadcast video signal including a KBPS signal is received. A tuner 701 for tuning the broadcast video signal of the tuner; A video signal detector 702 for detecting a composite video signal from the broadcast video signal of the tuned channel; Extract information related to a broadcast program from the KBPS signal included in the composite video signal and provide it as an on-screen signal, and extract information related to the type of the broadcast program from the information to generate an appropriate image compensation value for each program. A KBPS decoder 703; A video signal processor 704 for adding a video compensation value supplied from the KBPS decoder 703 to the video signal value output from the video signal detector 702 to output a corrected video signal suitable for the type of program; The video signal processor 704 is configured to combine the on-screen signal output from the KBPS decoder 703 and the water pipe driver 705 to display on the water tube (CRT).

The KBPS decoder 703 includes a timing generator and a sync separator 703A for detecting a KBPS section signal and a sync signal from the composite video signal output from the video signal detector 702; A data slicer 703B for slicing the detected KBPS interval signal to detect original digital data; A processor (703C) for comparing and analyzing the digital data detected by the data slicer (703B) with previously stored KBPS data; A microcomputer 703D for generating a control signal based on the type information of the comparatively analyzed program; A program selector 703E for decoding the control signal and outputting a control signal for each program type corresponding thereto; An image compensation value output unit 703F for selecting and outputting an image compensation value suitable for the type of a program currently being received based on the control signal for each program type; An on-screen signal generator (703G) which generates an on-screen signal corresponding to the data supplied from the processor (703C) and then outputs it in synchronization with the horizontal and vertical synchronization signals of the system; The D / A converter 703H converts the digital on-screen signal output from the on-screen signal generator 703G into an analog signal and outputs it to the water pipe driving unit 705.

According to an aspect of the present invention, there is provided a method of automatically adjusting a video mode of a television receiver, comprising: a KBPS signal reading process of determining whether a KBPS signal is included in a received broadcast video signal; An automatic video mode determination process of checking whether the automatic video mode is set by the user when it is found that the KBPS signal is included in the received broadcast video signal; An automatic image correction process of detecting program type information from the KBPS signal and correcting a received image signal by selecting image correction data based on the information when the automatic image mode is set; And a video signal synthesizing process for synthesizing the on-screen signal with the corrected video signal and outputting the same to the display means.

Referring to Figures 8 and 9 attached to the operation of the present invention configured as described above in detail as follows.

A high frequency video signal received through the antenna ANT is supplied to the tuner 701, where a broadcast video signal of a channel requested by the user is tuned, and the broadcast video signal includes a KBPS signal.

The broadcast video signal of the tuned channel is detected by the video signal detector 702, and a composite video signal is output therefrom. The composite video signal is transmitted to the video signal processor 704 to be described later. After corrected by the image compensation value supplied from the water pipe driving unit 705 is output.

In addition, the water pipe driving unit 705 combines the video signal corrected by the video signal processing unit 705 and the on-screen signal output from the D / A converter 703H of the KBPS decoder 703 to the water pipe. Will be displayed.

Therefore, even if the user does not perform any key operation, the video mode is automatically set. Hereinafter, the operation of the KBPS decoder 703 will be described in detail.

The timing generating and synchronizing separator 703A detects the KBPS section signal and the synchronizing signal from the composite video signal output from the video signal detector 702 under the control of the microcomputer 703D, and outputs it to the data slicer 703B. The data slicer 703B slices the KBPS section signal, recognizes the KBPS signal, converts it into digital data, and outputs the converted data to the processor 703C.

Accordingly, the processor 703C compares and analyzes the digital data input from the data slicer 703B with the KBPS data already stored and outputs the analyzed data to the on-screen signal generator 703G. Based on the analyzed data, the type of program (movie, sports, music, etc.) is read out and the result is output to the microcomputer 703D.

Accordingly, the microcomputer 703D generates a control signal for correcting the input image based on the type information of the program supplied from the processor 703C, outputs the control signal to the program selection unit 703E, and selects the program. The unit 703E decodes the input control signal and outputs a control signal for each program type corresponding thereto to the video compensation value output unit 703F.

Accordingly, the image compensation value output unit 703F selects an image compensation value suitable for the type of the program currently being received from the table as shown in FIG. 8 based on the control signal for each program type, and outputs it to the image signal processing unit 704. do. For reference, the image correction table value of FIG. 8 may be arbitrarily set by the user by a separate setting routine.

Accordingly, the video signal processor 704 adds a compensation value supplied from the video compensation value output unit 703F to a video signal value supplied from the video signal detector 702 to correct the program type. The output video signal can be output.

Meanwhile, the on-screen signal generator 703G generates an on-screen signal corresponding to the contents of KBPS, that is, data supplied from the processor 703C, and then outputs horizontal and vertical synchronous signals from the water pipe driving unit 705. It receives the input and synchronizes it through the internal synchronization signal generator to be suitable for the water pipe (CRT). Through this process, the KBPS on-screen signal output from the on-screen signal generator 703G is converted into an analog signal through the R, G, and B D / A converter 703H and supplied to the water pipe driving unit 705. do.

Therefore, the water pipe driving unit 705 synthesizes the video signal corrected by the video signal processing unit 704 and the on-screen signal output from the D / A converter 703H and displays the on-screen signal on the water pipe (CRT).

As a result, even if the user does not perform a separate key operation by the series of image processing as described above, the image mode is automatically set so that a more realistic program can be enjoyed. KBPS information will be available.

As described in detail above, the present invention classifies the types of broadcast programs received by using the KBPS signal into sports, movies, music, and the like, and according to the classification result, color, contrast, brightness, etc. By automatically adjusting, the user can provide a video environment that matches the contents of the program without causing inconvenience.

Claims (8)

A timing generator and a sync separator for detecting the KBPS section signal and the sync signal from the received composite video signal; A data slicer for slicing the detected KBPS interval signal to detect original digital data; A processor for comparing and analyzing the digital data detected by the data slicer with previously stored KBPS data; A microcomputer generating a control signal based on the type information of the comparatively analyzed program; A program selector which decodes the control signal and outputs a control signal for each program type corresponding thereto; An image compensation value output unit which selects and outputs an image compensation value suitable for the type of a program currently being received based on the control signal for each program type; An on-screen signal generator for generating an on-screen signal corresponding to data supplied from the processor and outputting the on-screen signal in synchronization with a synchronization signal of the system; A video signal processor which adds a video compensation value supplied from the video compensation value output unit to a video signal to be received and outputs a video signal corrected to be suitable for a program type; And an image tube driving unit for synthesizing the on-screen signal output from the on-screen signal generator side with the image signal output from the image signal processing unit and displaying the image on the receiving tube. The apparatus of claim 1, wherein the type of program includes a movie, music, sports, or news. The apparatus of claim 1, wherein the compensation value output from the image compensation value output unit is a value related to color, contrast, and brightness. The apparatus of claim 1, wherein the image compensation value output unit comprises a table in which image compensation values are stored for each program. A KBPS signal reading process of determining whether the KBPS signal is included in the received broadcast video signal; An automatic video mode determination process of checking whether the automatic video mode is set by the user when it is found that the KBPS signal is included in the received broadcast video signal; An automatic image correction process of detecting program type information from the KBPS signal and correcting a received image signal by selecting image correction data based on the information when the automatic image mode is set; And a video signal synthesizing step of synthesizing the on-screen signal with the corrected video signal and outputting the on-screen signal to the display means. The method according to claim 5, wherein the KBPS signal reading process comprises: a KBPS signal recognition step of determining whether a KBPS signal exists in a synchronously separated composite video signal; And a KBPS signal reading step of separately detecting a KBPS signal and reading the signal. The method of claim 5, wherein the automatic image mode determination process comprises outputting a previously set image correction value and outputting an on-screen signal separated from the KBPS signal when it is determined that the automatic image mode is not set. A video mode automatic adjustment method of a television receiver, characterized in that. The method of claim 5, wherein the video signal synthesizing process comprises: a program data detection step of separately detecting program-related data included in the KBPS signal; A program selecting device driving step of comparing and analyzing the detected program data with previously stored KBPS data to generate a control signal for driving the program selecting device; And an image compensation step of compensating for a program image received according to the image compensation value selected by the program selection device.