KR100257056B1 - Picture-in-picture process control apparatus of television - Google Patents

Abstract

PURPOSE: A PIP output controller of a television is provided to enable a viewer to effectively view a main/sub screen by adjusting an output form of a main/sub screen of a sub screen according to a genre of a broadcasting program outputted to a main screen in case of a PIP mode. CONSTITUTION: A control signal input unit(10) set whole functions equipped in a relevant television. A control unit(12) controls whole device on the basis of a control signal. A main tuner(14) tunes a main channel among a plurality of channels under the control of the control unit(12). A main video IF module(16) performs a video IF amplification of a video signal of the main channel. A signal composition unit(20) switches an R/G/B signal applied from a PIP processing unit(34) at high speed. A deflection coil(22) deflects the R/G/B signal vertically/horizontally. A CRT(24) outputs the signal deflected. A deflection power supply circuit(26) applies a horizontal deflection signal and a vertical deflection signal.

Description

PiP output control device of television

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PIP output control apparatus for a television, and more particularly, to control a PIP output of a television such that the output form of the main / sub screen of the sub screen is adjusted according to the genre of the broadcast program output to the main screen in the PIP mode. Relates to a device.

As is well known, in response to video and audio signals transmitted from each broadcasting station, video / audio signals for a specific channel selected by the viewer are tuned, and the video / audio signals are reproduced to process video / audio output. For example, about 60 channel bands are allocated to televisions that are outputted through the apparatus, and general TV broadcasts, cable broadcasts, cable TV broadcasts, and false broadcasts are provided as the channel bands.

In addition, the broadcasting station providing the broadcasting program according to the above broadcasting codes the broadcasting program information about the broadcasting time, the audience, the broadcasting program title, the broadcasting program genre, and the like for the one week or one month broadcasting program to be broadcasted by the broadcasting station. By converting the data into a vertical retrace of the broadcast signal, the receiver can easily acquire information on the broadcast program that is scheduled to be broadcasted by the broadcasting station. This method is commonly used in Korean broadcasting program system (KBPS) or BPS ( broadcasting program system).

In particular, the system of the KBPS signal applied to the KBPS is adjacent to the videotext data line (ie, the 11th to 14th lines) in the teletext data line and the like transmitted in the video blanking period as shown in FIG. 1. And the KBPS signal includes data indicating the date / month / hour / minute when the broadcast program currently being viewed or the broadcast program that is broadcast within one week or one month is broadcasted, and the broadcast program The broadcasted country code data and program source code data indicating the type of the broadcast program are included.

Here, the program source code data is composed of a hexadecimal code indicating the type of a broadcast program as shown in FIG. 2. For example, according to the code data, '43' is a broadcast for 'economic, industrial, and financial'. It is a program, '4A' is a broadcast program for 'news', and '5B' is a broadcast program for 'drama'.

As a result, the TV side can obtain information on the genre, the broadcast time, and the like of the broadcast program or the broadcast program on a weekly and monthly basis through the KBPS code data.

In addition, the PIP (Picture In Picture) function, which is currently provided on a television, outputs multiple screens such as a main / sub screen on one screen so that viewers can simultaneously view the two screens or perform channel searching through a sub screen. It can be done.

As described above, in a television having a PIP function and capable of decoding KBPS code data of KBPS, when the viewer selects the PIP mode, the screen being watched is output as the main screen and the sub screen for performing the PIP function is displayed on the main screen. In the upper left, lower left, upper right and lower right of the predetermined area, the output is smaller than the normal screen. Since the PIP output form is fixed, the main / sub screen can be effectively There was a problem that can not watch effectively.

Accordingly, the present invention has been made in view of the above circumstances, and the PIP output control apparatus for a television which adjusts the output form of the main / sub screen of the sub screen according to the genre of the broadcast program output to the main screen in the PIP mode. The purpose is to provide.

According to an embodiment of the present invention for realizing the above object, a main video IF module for amplifying a video IF of a broadcast signal of a main channel tuned by the main tuner, and a subchannel tuned by the sub tuner 28. A television having a PIP function composed of a sub-picture IF module that amplifies a broadcast signal by video IF; A KBPS code data detector for detecting KBPS code data from the video signal output from the main video IF module; The broadcasting genre selected by the main tuner is determined from the KBPS code data detected by the KBPS code data detecting unit, and the first, second, and third control signals are output to the associated apparatus according to the broadcasting genre, and output on the CRT screen. A controller for adjusting the output form of the main screen and the sub screen; A main video signal processor for reproducing and outputting a video signal output from the main video IF module under the control of the controller; A PIP processor for PIP processing the video signal output from the sub video IF module under the control of the controller and reproduced by the sub video signal processor; Provided is a PIP output control apparatus for a television comprising a signal synthesizing unit for synthesizing a video signal output from the main video signal processing unit and a video signal output from the PIP processing unit and outputting the synthesized image onto a CRT.

According to the present invention having the above configuration, when the broadcast genre of the main screen is, for example, 'sports', the main / sub screen is output in a form in which the CRT screen is separated in the horizontal direction, and the broadcast genre is 'drama'. In this case, the main / sub screen is output in the form of the CRT screen divided in the vertical direction, and when the broadcasting genre is 'news', the main / sub screen is output in the form of the sub-screen output in a predetermined portion of the main screen. In PIP mode, the main / sub screen can be viewed effectively.

1 is a view for explaining the system of KBPS (Korean broadcasting program system) signal applied to the PIP output control apparatus of a television according to an embodiment of the present invention,

FIG. 2 is a diagram for explaining a program source code of the KBPS signal shown in FIG. 1;

3 is a block diagram showing the main block configuration of the PIP output control apparatus of a television according to an embodiment of the present invention;

4 is a block diagram illustrating an internal block structure of the KBPS code detection unit shown in FIG. 3;

5A, 5B and 5C show screen display examples of a television to which a PIP output control apparatus to which the present invention is applied is applied.

Explanation of symbols on the main parts of the drawings

10: control signal input unit, 12: control unit,

14: main tuner, 16: main video IF module,

18: main video signal processing section, 20: signal synthesis section,

22: deflection coil, 24: CRT,

36: KBPS code data detection unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing the main block configuration of the PIP output control apparatus for a television according to an embodiment of the present invention, in which reference numeral 10 denotes the overall function of the television. As a control signal input unit, it is preferable that the control signal input unit 10 is provided with a PIP button 10a for setting the PIP mode in accordance with the present invention.

Reference numeral 12 denotes a control unit for controlling the overall apparatus based on the control signal input from the control signal input unit 10. In the present invention, the control unit 12 from the KBPS code data detection unit 36 to be described later There is a built-in lookup table for analyzing the applied KBPS code data, and when the PIP mode is set by the control signal input unit 10, it analyzes the KBPS code data applied from the KBPS code data detection unit 36 and selects the main. After determining the broadcast genre of the channel is a control unit for controlling the associated device to adjust the PIP output form corresponding to the broadcast genre.

Further, reference numeral 14 denotes a main tuner for tuning the main channel among the plurality of channels received through the antenna under the control of the controller 12, and 16 denotes a broadcast signal of the main channel tuned by the main tuner 14; Image IF amplification is a main video IF module, 16 is to separate the video signal output from the main video IF module 16 into a luminance signal and a color signal, amplify each of the amplification process and then output the RGB signal accordingly. In addition, the main image signal processor performs compression processing on the main screen by compressing pixels of the image signal on the main screen or compressing the scan line under the control of the controller 12.

Reference numeral 20 is a high-speed switching of the R / G / B signal output from the main video signal processing unit 18 and the R / G / B signal applied from the PIP processing unit 34 to be described later in a superimposed manner to display a screen. 22 is a deflection coil for deflecting the R / G / B signal applied from the signal synthesis unit 20 in the vertical / horizontal direction, and 24 is deflected by the deflection coil 22. A CRT for outputting a video signal, and 26 denotes a horizontal deflection signal and a vertical deflection signal to the deflection coil 21 based on the synchronization signal applied from the main video signal processing unit 18, and the high pressure with the CRT. It is a deflection power supply circuit that supplies.

In addition, reference numeral 28 shown in FIG. 3 is a subtuner for tuning subchannels among a plurality of channels received through an antenna under the control of the controller 12, and 30 is a tuner tuned by the subtuner 28. FIG. A sub video IF module for amplifying a broadcast signal of a sub channel video IF 32. The video signal outputted from the sub video IF module 30 is divided into a luminance signal and a color signal, amplified, and amplified, respectively. And a sub image signal processor 32 for outputting an RGB signal, and 34 compresses a pixel of a video signal for a sub screen from the sub image signal processor 32 under the control of the controller 12, or compresses a scan line. A PIP processing unit which compresses a sub picture by performing compression.

In FIG. 3, reference numeral 36 denotes program source code data (hereinafter, referred to as KBPS code data) which is tuned by the main tuner 14 and included in a video signal amplified by the video IF module 16 and transmitted. The KBPS code detector 36 detects the KBPS code detector 36 in the present invention by the main tuner 14, as shown in FIG. The digital data is obtained by slicing the synchronization and synchronization unit 34a for separating horizontal and vertical synchronization signals from the image IF-amplified tuner IN signal and the tuner IN signal (that is, the image signal generated by the tuner 18) in a synchronous adjustment form. The KBPS signal included in the video blanking period of the video signal of the digital data sliced by the data slicer 34b based on the data slicer 34b provided and the synchronization signal separated by the sync separator 34a (see FIG. 1). Program of It comprises a KBPS decoder 34c for extracting and providing source code data, and a program storage section 34d in which a program applied to program source code detection by the KBPS decoder 34c is recorded.

Hereinafter, the operation of the PIP output control apparatus of the television according to the embodiment of the present invention having the above configuration will be described in detail.

First, the KBPS code data detection unit 36 detects KBPS code data from the video signal output from the main video IF module 16, and applies the detection result to the control unit 12.

The control unit 12 analyzes the KBPS code data applied from the KBPS code data detection unit 36 based on the built-in lookup table and determines the genre of the broadcast program from the KBPS code data. Is '68 (16) ', the broadcasting genre is determined to be "sports." If the KBPS code data is' 5B (16)', the broadcasting genre is determined to be "drama." If the code data is '68 (16) ', it is determined that the genre is "news" (see Fig. 2).

According to the determination result, the control unit 12 applies a predetermined control signal to the main video signal processing unit 18, the PIP processing unit 34, and the signal synthesizing unit 20. For example, if the determined broadcasting genre is "sport", The control unit 12 applies a second control signal to the main image signal processing unit 18 and the PIP processing unit 34, and simultaneously supplies a predetermined control signal to the signal synthesizing unit 20 according to the horizontal division * of the screen. Is authorized.

For this reason, the main video signal processing unit 18 compresses the scanning line of the video signal of the main screen by a predetermined value, compresses the top and bottom of the video signal to be output on the CRT screen, and applies it to the signal synthesizing unit 20. The PIP processor 34 also compresses the scanning line of the video signal of the sub screen by a predetermined value, compresses the top and bottom of the video signal to be output on the CRT screen, and applies it to the signal processing synthesis section 20. The signal synthesizing unit 20 synthesizes the video signal output from the main video signal processing unit 16 and the video signal output from the PIP processing unit 34 and outputs the same to the CRT side through the CRT screen as shown in FIG. 5A. Main screen and sub screen are displayed.

Alternatively, if the determined broadcast genre is "drama," the controller 12 may control the first control signal to the main video signal processor 18 and the PIP processor 34. At the same time, a predetermined control signal according to the vertical division of the screen is applied to the signal synthesis unit 20.

Accordingly, the main video signal processor 18 compresses the pixels of the video signal of the main screen by a predetermined value to compress the left and right of the video signal to be output on the CRT screen, and applies the signal to the signal synthesizer 20. The PIP processing unit 34 also compresses the pixels of the video signal of the sub-screen by a predetermined value, compresses the left and right of the video signal to be output on the CRT screen, and applies the signal to the signal processing synthesis unit 20. Accordingly, the signal synthesis is performed. The unit 20 synthesizes the video signal output from the main video signal processing unit 16 and the video signal output from the PIP processing unit 34 and outputs the synthesized video signal to the CRT side. And sub screen are displayed.

In another case, the control unit 12 applies a third control signal to the PIP processing unit 34 while the determined broadcast genre is, for example, "news". The synthesizer 20 applies a predetermined control signal according to the normal PIP screen division.

Thus, the main video signal processing unit 18 normally applies the video signal of the main screen to the signal synthesizing unit 20, and the PIP processing unit 34 sets the pixel and the scan line of the video signal of the sub screen to a predetermined value. The left / right and up / down of the image signal to be output on the CRT screen is compressed and applied to the signal processing synthesis section 20. Accordingly, the signal synthesis section 20 is separated from the main video signal processing section 16. By synthesizing the output video signal and the video signal output from the PIP processing unit 34 to the CRT side, the main screen and the sub screen are output as shown in FIG. 5C through the CRT screen.

Therefore, the output form of the main screen and the sub screen output in the PIP mode is variably adjusted in accordance with the broadcasting genre of the main channel.

As described above, according to the apparatus for controlling a PIP output of a television according to an embodiment of the present invention, the main screen and sub screens in the PIP mode are variably adjusted according to the broadcasting genre of the main screen. You can watch the screen effectively.

Claims (7)

Main video IF module 16 for video IF amplifying the broadcast signal of the main channel tuned by the main tuner 14, and sub video IF for video IF amplifying the broadcast signal of the subchannel tuned by the sub tuner 28. In a television having a PIP function composed of a module 30; A KBPS code data detector 36 for detecting KBPS code data from the video signal output from the main video IF module 16; The broadcast genre tuned by the main tuner 14 is determined from the KBPS code data detected by the KBPS code data detection unit 36, and the first, second, and third control signals are output to the associated apparatus according to the broadcast genre. A control unit 12 for adjusting the output form of the main screen and the sub screen output on the CRT screen; A main video signal processor 18 for reproducing and outputting a video signal output from the main video IF module 18 under the control of the controller 12; A PIP processor 34 for PIP-processing the video signal output from the sub video IF module 18 and reproduced by the sub video signal processor 32 under the control of the controller 12; And a signal synthesizing unit 20 for synthesizing the video signal output from the main video signal processing unit 18 and the video signal output from the PIP processing unit 34 and outputting the synthesized image onto the CRT 24. PIP output control device of a television. The control method of claim 1, wherein the main video signal processor 16 compresses a pixel of the video signal by a predetermined value when the first control signal is applied from the controller 12, and applies the second control signal from the controller 12. And compressing the scan line of the video signal by a predetermined value to output the compressed signal. 2. The PIP processing unit 34 according to claim 1, wherein the PIP processing unit 34 compresses a pixel of the video signal by a predetermined value when the first control signal is applied from the control unit 12, and when the second control signal is applied from the control unit 12. And compressing the scan line of the signal by a predetermined value and compressing the pixel and the scan line of the video signal by a predetermined value when the third control signal is applied from the control unit (12). The main screen of claim 1, wherein the signal synthesizing unit 28 sets a blanking area based on the first, second and third control signals applied from the control unit 12 to divide the CRT screen into a horizontal screen. To display the main screen and the sub screen in a form in which the CRT screen is divided in the vertical direction, or to output the main screen and the sub screen in a form in which the sub screen is included in a predetermined area of the main screen. PIP output control device for a television, characterized in that. The main video signal processing unit 16 and the sub video signal processing unit 32 according to claim 1 or 4, wherein the control unit 12 determines that the broadcast genre is determined by the KBPS code data and the broadcast genre is "sport." And controlling the signal synthesizing unit (20) to control the signal synthesizing unit (20) so that the CRT screen is divided in the horizontal direction so that the main screen and the sub screen are output. The main video signal processing unit 16 and the sub video signal processing unit 32 according to claim 1 or 4, wherein the control unit 12 determines that the broadcast genre is determined by the KBPS code data and the broadcast genre is "drama." And controlling the signal synthesizing unit (20) to control the signal synthesizing unit (20) so that the CRT screen is divided in the vertical direction to output the main screen and the sub screen. The method according to claim 1 or 4, wherein the control unit 12 applies a third control signal to the sub video signal processing unit 32 when the broadcasting genre judgment based on the KBPS code data indicates that the broadcasting genre is "news". And controlling the signal synthesizing unit 20 to output the main screen and the sub screen in a form in which the sub screen is included in a predetermined area of the main screen.

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