KR100789539B1 - Video output control apparatus of broadcasting receiver - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a video output control apparatus for controlling a video processing output on a main or main / sub screen graphic processed for data broadcasting.

The video output control apparatus in the broadcast receiver according to the present invention demultiplexes the main video signal, scales the demultiplexed main video signal, performs graphic data processing for data broadcasting, and then demultiplexes the monitor output. And it can be output to the display output, and at the same time characterized in that the monitor output is possible with the configuration to the multi-screen.

Data broadcast, scaler, PIP, POP, SS,

Description

Video output control apparatus of broadcasting receiver

1 is a block diagram of a video processing apparatus in a conventional digital broadcasting receiver.

2 is a block diagram illustrating a video output control apparatus in a broadcast receiver according to a first embodiment of the present invention.

Figure 3 (a) (b) is a view showing the POP display output and the monitor output in Figure 2 of the present invention.

Figure 4 (a) (b) is a view showing a PIP display output and a monitor output in Figure 2 of the present invention.

5 (a) and 5 (b) show the split screen display output and the monitor output in FIG. 2 of the present invention.

6 is a block diagram illustrating a video output control apparatus in a broadcast receiver according to a second embodiment of the present invention.

7 (a) and 7 (b) show the POP display output and the monitor output in FIG. 6 of the present invention.

8 (a) and 8 (b) show a PIP display output and a monitor output in FIG. 6 of the present invention.

9 (a) and 9 (b) show the split screen display output and the monitor output in FIG. 6 of the present invention.

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

111,114,119,133,134,139,140,147, ... Demultiplexer

112,115,116,122,135,136,141,142,150 ... Scaler

113,137,138 ... graphic processing unit

117,120,121,131,132,143,144,145,148,149 ... Multiplexer

118,146 ... OSD processing unit

123,151 ... encoder

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a video output control apparatus for controlling a video processing output on a graphically processed screen for data broadcasting.

Digital TVs allow users to watch more than a certain amount of high-definition video compared to conventional analog TVs.

In addition, the range of digital TVs has been diversified, such as a device (eg, a set-top box) having only a function of decoding and outputting an image without a display function, a digital TV having both a decoding and a display function of an image, and Products such as monitors that do not have a decoding function but have a display function with a high resolution are forming a market.

In addition, it is easy to obtain not only video and audio information but also various additional information through data broadcasting, and PIP (Picture In Picture) function, which was applied only to a very expensive product family in the conventional analog TV, is a basic function in digital TV. Analog TV signals are also provided for existing analog TV or analog TV recording devices.

In the digital TV era, data broadcasting is a new type of broadcasting. For example, the UK's data broadcasting standard, Multimedea and Hypermedia information coding Experts Group (MHEG-5) and DVB (Digital Video Broadcasting), a two-way receiver (MHP: Multimedia Home) Platform).

These data broadcasts largely convey information to the user with audio, video and graphic data. Except for dual audio, video and graphic data requires visual signal processing on the receiver side as visual information. The video signals of digital broadcasting currently under consideration are divided into high definition (HD) class and standard definition (SD) class, and these video signals require a large bandwidth in the process.

Moreover, the recent large TV receivers include PIP, Picture Out Picture (POP), and Split Screen (SS), which show two video screens, and one of TV's unique features is monitor output ( A monitor output is included for recording using a video recorder (eg VCR). Such multiple processing of video also requires a large bandwidth.

Therefore, in the current digital TV receiver, the general video path is not overcome by the bandwidth limit, and there are various limitations.

1 is a video processing apparatus of a general digital broadcast receiver.

Referring to FIG. 1, a first demultiplexer (DE-MUX) 101 for dividing and outputting a main video, and a first scaler 102 for adjusting the size of the divided main video; A second scaler 103 for scaling an input sub video, a first multiplexer 104 for multiplexing the scaled main and sub video with a PIP, and an OSD processing unit 105 for implementing an on-screen menu And a second demultiplexer 106 for demultiplexing the multiplexed video and outputting the demultiplexed video to a display output and a monitor output, and selectively multiplexing and outputting signals output by the first and second demultiplexers 101 and 106. A second multiplexer 107, a third scaler 108 for adjusting the output size of the second multiplexer 107, and an encoder 109 for encoding and outputting the output of the third scaler 108. It features.

In the video processing apparatus of the digital broadcasting apparatus, the main video is output through a plurality of paths from the first demultiplexer 101, and the main video output through one path is output by the first scaler 102. It is resized. The second scaler 103 receives the sub video and adjusts the size to output the sub video.

When the PIP screen is selected, the first multiplexer 104 receives the main video and the sub video of which the size is adjusted, multiplexes the PIP screen, and outputs the multiplexed PIP screen. When the command is selectively input by the user, the OSD processing unit 105 is input. Menus are displayed on the OSD (On Screen Display).

The second demultiplexer 106 receives the input PIP screen and outputs it to the display out and the second multiplexer 107. The second multiplexer 107 selects a PIP video or main video signal and scales and encodes the selected signal by the third scaler 108 to output (eg, a VCR OUT). In this way, the PIP screen or the main video can be output to the monitor output and output to the broadcast receiver.

The display output is output to the TV screen, and the resolution of the output is fixed. For example, the panel resolution of current 32 "wide LCD TVs is 1366 * 768 and the panel resolution of 42" wide VGA PDP TVs is 640 * 480. The main video and sub video are each multiplexed into a PIP via a scaler, and a menu OSD is placed on it and output to the display output. The video output to the main video or display output is output to the VCR output. Here, when the menu OSD is loaded, the VCR output is not preferable.

In this case, in the case of data broadcasting graphics using a resolution different from that used in the display output, implementation is very difficult. In particular, when PIP is used while receiving data broadcast including video scaling, implementation becomes more difficult. This means that even if the graphics for data broadcasting is processed by the OSD, there is no scaling process in the subsequent processing, so it takes a lot of load to generate the OSD suitable for the panel resolution or the OSD suitable for the PIP / POP / SS.

In such a conventional digital broadcast receiver, there is a problem in that a video path such as PIP, POP, and SS processing in data broadcasting is restricted.

A first object of the present invention is to provide a video processing apparatus in a broadcast receiver capable of graphic processing and video processing in data broadcasting.

It is a second object of the present invention to provide a video processing apparatus in a broadcast receiver capable of performing PIP / POP / SS processing simultaneously with video processing in data broadcasting.

It is a third object of the present invention to provide a video processing apparatus in a broadcast receiver capable of enabling monitor output together with video processing in data broadcasting.

A fourth object of the present invention is to provide a video processing apparatus in a broadcast receiver that enables data broadcasting when the video processing structure in data broadcasting is symmetrical or asymmetrical.

A video processing apparatus in a broadcast receiver according to the present invention for achieving the above object is a video signal output apparatus in a broadcast receiver for outputting data broadcast processed signals to a monitor output and a display output,

A first demultiplexer for demultiplexing the main video signal and outputting it to a monitor output and a display output;

A first scaler for scaling a main video signal for display output from the first demultiplexer;

A graphic processor which receives a main video signal output from the first scaler and processes graphic data for data broadcasting;

And a second demultiplexer for demultiplexing the signal output from the graphic processor and outputting graphic and main video signals in a data broadcast to a monitor output and a display output.

Preferably, the second scaler for scaling the output signal of the second demultiplexer in a multi-screen format; A third scaler for scaling the sub picture signal; A first multiplexer for multiplexing and outputting signals output from the second and third scalers; And a third demultiplexer for demultiplexing the output signal of the first multiplexer and outputting the output signal to the monitor output and the display output.

The apparatus may further include an OSD processing unit configured to receive the output of the first demultiplexer and implement a user's OSD menu to output the third demultiplexer.

Preferably, the second multiplexer for multiplexing and outputting the output of the second demultiplexer and the monitor output of the first demultiplexer; A third multiplexer for multiplexing and outputting the output of the second multiplexer and the monitor output of the third demultiplexer; A third scaler for scaling the output of the third multiplexer to a full screen format; And an encoder for encoding the scaling output of the third scaler.

Preferably, the first multiplexer may process one of a picture in picture (PIP), a picture out picture (POP), and a split screen by using a graphic main video signal in data broadcasting.

An apparatus for processing video signals in a broadcast receiver according to another embodiment of the present invention,

First and second multiplexers for multiplexing and outputting the main and sub video signals;

First and second demultiplexers for demultiplexing outputs from the first and second multiplexers and outputting them to a monitor output and a display output;

First and second scalers for respectively scaling a main or sub video signal for display output from the first and second demultiplexers;

First and second graphic processing units which receive the main or sub video signals output from the first and second scalers and perform graphic data processing for data broadcasting;

And third and fourth demultiplexers for demultiplexing the signals output from the first and second graphic processing units and outputting the main or sub video signal to the monitor output and the display output, respectively, to the graphic data in the data broadcast. do.

Preferably, third and fourth scalers for scaling display output signals from the third and fourth demultiplexers into a multi-screen format; A third multiplexer for multiplexing and outputting the signals output from the third and fourth scalers; And a fifth demultiplexer for demultiplexing an output signal of the third multiplexer and outputting the demultiplexed output to a monitor output and a display output.

The apparatus may further include an OSD processing unit configured to receive the output of the third demultiplexer and implement an OSD menu of the user to output to the fifth demultiplexer.

Preferably, a fourth multiplexer for multiplexing the output of the first demultiplexer and the output of the third demultiplexer to output to the monitor output path; A fifth multiplexer for multiplexing the output of the second demultiplexer and the output of the fourth demultiplexer and outputting the output to the monitor output path; A sixth multiplexer for multiplexing and outputting the monitor output of the fourth multiplexer and the monitor output of the fifth demultiplexer; A seventh multiplexer which multiplexes the output of the sixth multiplexer and the output of the fifth multiplexer and outputs the output to the monitor output; A fifth scaler for scaling the output of the seventh multiplexer to a full screen format; And an encoder for encoding and outputting the output of the fifth scaler.

Preferably, the third multiplexer is configured to process either a picture in picture (PIP), a picture out picture (POP) or a split screen by using the main and sub video signals processed in data broadcasting.

Hereinafter, with reference to the accompanying drawings as follows.

2 is a block diagram illustrating a video processing apparatus in a broadcast receiver according to a first embodiment of the present invention.

2, a first demultiplexer 111 outputting a main video signal through a plurality of paths, and a first scaler for adjusting scaling of the main video output through a first path of the first multiplexer 111. 112, a graphics processing unit (Gfx) 113 for receiving the main video output from the first scaler 112 and processing graphic data for data broadcasting, and a graphic data and video processed signal in the data broadcasting. Receives a second demultiplexer 114 for outputting a plurality of paths, a second scaler 115 for processing the entire screen signal output from the second demultiplexer 114 for multiple screens, and a sub video signal. A third scaler 116 for scaling adjustment, and a first multiplexer 117 for multiplexing and outputting signals input from the second and third scalers 115 and 116 by a user to multiple screens. An OSD processor 118 for implementing an OSD menu on the output signal of the first multiplexer 117, a third demultiplexer 119 for outputting the outputs of the first multiplexer 117 through a plurality of paths, and A second multiplexer 120 that receives the output signals of the first and second demultiplexers 111 and 114 and multiplexes the output signals, and a third multiplexer which multiplexes and outputs the outputs of the first multiplexer 120 and the third demultiplexer 119. 121, a fourth scaler 122 for scaling the output of the third multiplexer 121 to full screen, and an output of the fourth scaler 122 to be encoded for monitor output. It is the structure containing the encoder 123.

The video processing apparatus in the broadcast receiver according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 5.

First, FIG. 2 is a first embodiment of the present invention. In a video processing apparatus of a broadcast receiver, graphics and video configuration in data broadcasting are processed in an asymmetric processing path. This first embodiment illustrates an asymmetric video processing path, in which the main video and the sub video have different constraints according to bandwidth limitations. That is, the main video can broadcast data, and the sub video cannot broadcast data.

Referring to FIG. 2, the first demultiplexer 111 receives a main video and outputs a plurality of paths. Here, the plurality of paths are at least two paths, and include a monitor output (eg, VCR out) and a display output (Display out).

The main video signal output through the first path of the first multiplexer 111 is input to the first scaler 112, and the first scaler 112 performs scaling to convert the format of the main video signal to the graphics processor. Output to (113). Here, the first scaler 112 converts analog broadcast signals such as NTSC and PAL, PC signals such as VGA and XGA, and images of various sizes used for digital TV to the resolution of the display device.

The graphic processor 113 processes the graphic data with an OSD, and receives the main video signal and loads the main video signal on a screen of the OSD-processed graphic data. Accordingly, the main video signal is processed on the data broadcast screen.

The video and graphic data signals processed by the graphic processor 113 are input to the second demultiplexer 114, and the second demultiplexer 114 outputs the video and graphic data signals through a plurality of paths. Here, the plurality of paths include at least two output paths, and each path includes a monitor output path and a display output path.

The second scaler 115 scales the entire screen corresponding to the video and graphic processed signals for multiple screens. That is, scaling of the graphic data broadcast containing the main video is performed. The output of the second scaler 115 is input to the first multiplexer 117.

The sub video signal is input to the third scaler 116, and the third scaler 116 performs a sub screen format conversion function, and provides an image constituting the screen or the monitor screen with the resolution of the sub video signal. do. In order to provide such an image, a clock and a synchronization signal of a main screen image signal are used. In addition, by adjusting the size of the screen composed of multiple screens, it is possible to configure a variety of screens, such as split screen (SS), POP (Picture Out Picture), multi-PIP.

The first multiplexer 117 multiplexes and outputs the signals input from the second and third scalers 115 and 116. The first multiplexer 117 is a multiplexer for a PIP, and performs a proper combination and output using a graphic processed main video signal and a sub video signal output from the second and third scalers 115 and 116. That is, when the user wants to watch only the main screen in data broadcasting, only the main video may be output regardless of the existence of the sub screen image. When the user requests a PIP screen (including a multi-PIP), a split screen (SS), a POP, or the like that has a multi-screen structure, the main screen and the sub screen each configure their own screens with appropriate clocks and synchronization signals. It selects a valid part of the screen and prints it out.

For example, the multi-screen output from the first multiplexer 117 may be POP-processed, as shown in FIG. As shown in FIG. 2, the main video 202 is displayed on the graphic screen 201 for data broadcasting to one side of the screen 200, and the sub video (Vid1, 1) is displayed on one or more sub-screens 203, 204, and 205 to one side of the graphic screen. Vid2, Vid3) are displayed.

In addition, the multi-screen output from the first multiplexer 117 may be PIP-processed as shown in (a) of the fourth. The main video 212 and the sub video 213 are processed as PIPs on the graphic screen 211 for data broadcasting to one side of the screen 210. Here, the sizes and positions of the main video and the sub video may be changed.

In addition, the multiple screen output from the first multiplexer may be processed as the split screen SS, as shown in FIG. 5A. The graphic screen 222 for data broadcasting and the main video 223 are displayed on one side 220 of the display screen, and the sub video 224 is displayed on the other side of the screen.

The signal output from the first multiplexer 117 is input to the third demultiplexer 119 via the OSD processor 118. The OSD processor 118 implements an OSD menu provided by a user command on a graphic processed screen. The OSD processing unit 118 generates an OSD at a resolution suitable for PIP / POP / SS or generates an OSD at a panel resolution.

The third demultiplexer 119 outputs the graphics and video signals in the data broadcast output from the first multiplexer 117 through a plurality of paths. Here, the plurality of paths include, for example, a monitor output (VCR out) and a display output on the screen of the TV receiver.

Meanwhile, the main video signal output through the second path of the first demultiplexer 111 is input to the second multiplexer 120, and the second multiplexer 120 receives the outputs of the first and second demultiplexers 111 and 114. Output is for one input path. That is, only the main video signal is output or graphics and main video processed signals in data broadcasting are output.

The output of the second multiplexer 120 is input to the third multiplexer 121, and the third multiplexer 121 receives the output of the second multiplexer 120 or the output of the third demultiplexer 119 and receives one signal. Will print That is, the main video signal or the main video signal which has been processed for data broadcasting is output, or the multi-screened signal is output.

In addition, the fourth scaler 122 scales the signal output by the third multiplexer 121 to output the monitor in a full screen format. The scaled signal by the fourth scaler 121 is encoded by the encoder 123 and output. Here, the encoder will include a PAL or NTSC encoder.

Here, the monitor output (VCR out) is the output of the second demultiplexer 114 when the display output as shown in (a) of FIG. 3, (a) of FIG. 4, (a) of FIG. b), as shown in FIGS. 4B and 5B, where the graphic screens 201 ', 211', 222 'and the main video 202', 212 ', 223 on the display screen are output. ') Is output to the monitor output. In this case, since the graphic screen and the main video are not the full screen, the graphic screen and the main video are converted to the full screen and output.

By doing in this way, graphic processing in data broadcasting and video processing in data broadcasting are performed, and PIP / POP / SS processing is possible. Monitor output can also proceed simultaneously. Here, the first embodiment of FIG. 2 illustrates an asymmetric video processing path, in which the main video and the sub video have different constraints according to bandwidth limitations. That is, the main video can broadcast data, and the sub video cannot broadcast data.

Accordingly, data broadcast graphics using a resolution different from that used in the display output may be implemented as shown in FIGS. 3 to 5 through scaling. In addition, it can be seen that the multi-screen can be implemented while receiving data broadcast including video scaling.

6 is a block diagram illustrating a video processing apparatus in a broadcast receiver according to a second embodiment of the present invention.

Referring to FIG. 6, the first and second multiplexers 131 and 132 for multiplexing and outputting the input main video and sub video signals and the outputs of the first and second multiplexers 131 and 132 are outputted in a plurality of paths. First and second demultiplexers 133 and 134, first and second scalers 135 and 136 for adjusting scaling of video signals output from the first and second multiplexers 133 and 134, and first and second scalers ( First and second graphic processing units 137 and 138 for receiving graphic signals outputted from the data signals 135 and 136 and processing graphic data for data broadcasting, and demultiplexing the graphic and video processed signals in the data broadcasting to a plurality of paths. Third and fourth scales for processing the third and fourth demultiplexers 139 and 140 and the entire screen output from the third and fourth demultiplexers 139 and 140 for multiple screens. 141 and 142, a third multiplexer 143 for multiplexing and outputting signals input from the third and fourth scalers 141 and 142 into multiple screens, and an output of the first and third demultiplexers 133 and 139 to be selectively received. The user inputs the output of the fourth multiplexer 144, the fifth multiplexer 145 for receiving and multiplexing and outputting the outputs of the second and fourth demultiplexers 134 and 140, and the output of the third multiplexer 143. An OSD processing unit 146 for processing an OSD menu by the second control unit, a fifth demultiplexer 147 that receives the output of the fifth multiplexer 145 and outputs the outputs in a plurality of paths for display and monitor outputs; A sixth multiplexer 148 for multiplexing and selectively outputting the output of the demultiplexer 147 and the output of the fourth multiplexer 144 and the outputs of the sixth multiplexer 148 and the fifth multiplexer 145 selectively Ha An encoder 151 that encodes an output of the seventh multiplexer 149, a fifth scaler 150 for scaling the output of the seventh multiplexer 149, and an output of the fifth scaler 150 to a monitor output; Characterized in that it comprises a.

The video processing apparatus in the broadcast receiver according to the second embodiment of the present invention will be described with reference to FIGS. 6 to 9.

First, FIG. 6 illustrates a path for symmetrically processing graphics and video signals in data broadcasting in a video processing apparatus of a broadcast receiver as a second embodiment of the present invention. When processing symmetrically, it includes multiple screens and monitor outputs. This second embodiment shows a symmetrical video processing path for processing the main video and the sub video in the same way because there is no bandwidth limitation, and shows a case where data broadcasting can be performed simultaneously for the main video and the sub video.

Referring to FIG. 6, the first multiplexer 131 and the second multiplexer 132 receive a main video signal and a sub video signal, respectively, and multiplex them to selectively output only one video signal.

The video signals output from the first and second multiplexers 131 and 132 are demultiplexed from the first and second demultiplexers 133 and 134 to be output as a plurality of paths, and the plurality of paths are at least two paths or more and are output to a monitor and display. Will contain the output.

The video signals output from the first and second multiplexers 133 and 134 on the first path are input to the first scaler 135 and the second scaler 136, respectively, and the first and second scalers 135 and 136 are selected. The scaling is performed to convert the format of the input video signal and output to the first and second graphic processing units 137 and 138. Here, the first and second scalers 137 and 138 convert analog broadcast signals such as NTSC and PAL, PC signals such as VGA and XGA, and images of various sizes used for digital TV to the resolution of the display device. Perform.

The first and second graphic processing units 137 and 138 process the main video and the sub video as the OSD of graphic data. The first and second graphic processing units 137 and 138 receive the selected video signal and load the main video or sub video on the screen of the graphic data processed by the OSD. do. Accordingly, the main or sub video signal is independently processed on the data broadcast screen.

The video and graphic data signals processed by the first and second graphic processing units 137 and 138 are input to the third and fourth demultiplexers 139 and 140, and the third and fourth demultiplexers 139 and 140 are provided in a plurality of paths. The video and graphic data signals are output. Here, the plurality of paths include at least two output paths, and include a monitor output and a display output path.

The third and fourth scalers 141 and 142 may scale the entire screen corresponding to the video and graphic processed signals for multiple screens. That is, scaling of the data broadcast carrying the main or sub video is performed. Outputs of the third and fourth scalers 141 and 142 are input to the third multiplexer 143.

The third and fourth scalers 141 and 142 convert the format of the entire screen for the multi screen and provide an image constituting the multi screen or the monitor screen. In order to provide such an image, a clock and a synchronization signal of a main (sub) screen image signal are used. In addition, by adjusting the size of the screen consisting of multiple screens, it is possible to configure a variety of screens, such as split screen (SS), POP, multi-PIP.

The third multiplexer 143 multiplexes and outputs a graphic main video signal or a graphic sub video signal in the data broadcast input from the third and fourth scalers 141 and 142. In this case, the third multiplexer 143 is a multiplexer for the PIP, and serves to appropriately combine and output signals output from the third and fourth scalers 141 and 142. That is, when the user wants to watch only the main (sub) screen in data broadcasting, only the main video may be output regardless of the presence or absence of a sub-screen image. When a user requests a PIP screen (including a multi-PIP), a split screen (dual screen), a POP, etc., which is a multi-screen structure, for a graphic screen in a data broadcast, the main screen and sub screens each have an appropriate clock and synchronization signal. Each screen is configured to select a valid portion of each screen from the third multiplexer 12 and output the selected screen.

For example, in the multi-screen output from the third multiplexer 143, as shown in FIGS. 7A, 8A, and 9A, the main / sub video signals are respectively displayed on the graphic screen. It can consist of processed POP, PIP, and split screen (SS).

As illustrated in (a) of FIG. 7, the graphic screen 231 and the video signal 232 of the one side area 230 of the screen may be processed as simultaneously processed POPs. As shown therein, the main (sub) video 232 is displayed on the first graphic screen 231 for data broadcasting, and the sub video is displayed on one or more second graphic screens G1, G2, and G3. This is the case where the (main) video screens V1, V2, and V3 234 are displayed respectively. Here, the first and second graphic screens G (G1, G2, G3) may be configured identically or differently.

In addition, as shown in (a) of FIG. 8, graphic and video signals may be PIP processed simultaneously. In the screen area 240, the main (sub) video 242 is processed on the first graphic screen 141 for data broadcasting, and the sub video screen V1 244 is displayed on the second graphic screen 243. Is processed. Here, the first and second graphic screens may be configured identically or differently.

It may also be processed as a split screen, as shown in Fig. 9A. The main (sub) video screen 253 is processed on the first graphic screen 252 for data broadcasting to one side 250 of the display screen, and the sub-screen on the second graphic screen G1 254 to the other side of the screen. The (main) video screen V1 (255) is displayed.

The signal output from the third multiplexer 143 is input to the fifth demultiplexer 147 via the OSD processor 146. The OSD processor 146 implements the OSD menu provided by the user's command as a graphic processed screen. The OSD processing unit 146 generates an OSD at a resolution suitable for PIP / POP / SS or generates an OSD at a panel resolution.

The fifth demultiplexer 147 outputs the graphic and video processed signals in the data broadcast output from the second multiplexer 143 through a plurality of paths. Here, the plurality of paths may include, for example, a monitor output and a display output on the screen of the TV receiver.

Meanwhile, the video signal output through the second path of the first demultiplexer 133 is input to the fourth multiplexer 144, and the fourth multiplexer 144 receives the outputs of the first and third demultiplexers 133 and 139. Multiplexing will optionally output a single input path. That is, only the main (sub) video signal is output or graphics and main (sub) video in data broadcasting are output.

The video signal output through the second path of the second demultiplexer 134 is input to the fifth multiplexer 145, and the fifth multiplexer 145 receives the outputs of the second and fourth demultiplexers 134 and 140 and multiplexes it. To selectively output to the seventh multiplexer 149 for one input path. That is, only the main (sub) video signal is output or graphics and main (sub) video processed signals in data broadcasting are output.

The monitor output of the fourth multiplexer 143 is input to the sixth multiplexer 148, and the sixth multiplexer 148 receives the output of the fourth multiplexer 143 or the output of the fifth demultiplexer 147. Will output the signal of. That is, the main (sub) video signal or the main (sub) video signal processed for data broadcasting is output or the multi-screen processed signal is output.

The seventh multiplexer 149 receives the outputs of the sixth and fifth multiplexers 144 and 148 and multiplexes them, and selectively outputs them. The outputs become monitor outputs. It is input to the fifth scaler 150 to adjust the scaling for this monitor output signal.

The fifth scaler 150 scales the signal output by the seventh multiplexer 149 to output the monitor in full screen format. The encoder scaled by the fifth scaler 150 is encoded and output. Here, the encoder will include a PAL or NTSC encoder.

Here, when the monitor output is a display output as shown in (a) of FIG. 7, (a) of FIG. 8, and (a) of FIG. 9, the monitor output is the output of the third or fourth demultiplexers 139 and 140. (B), FIG. 8 (b), and FIG. 9 (b), the monitor outputs the graphic screens 231 '(233'), 241 '(243'), and 252 'on the display screen. 254) and main (sub) video 232 '(234'), 242 '(244'), and 253 '(255') are output to the monitor output, wherein the graphic screen and main (sub) video are output. Since is not a full screen, the fourth scaler 150 is converted to a full screen and output.

By doing in this way, graphic processing in data broadcasting and video processing in data broadcasting are performed, and PIP / POP / SS processing is possible. Independent monitor outputs can also be processed simultaneously. That is, in the symmetrical video processing path as shown in FIG. 3, both main video and sub video can broadcast data. Accordingly, in the case of graphics of data broadcasting using a resolution different from that used in the display output, it may be implemented as shown in FIGS. 7 to 9 through scaling. In addition, it can be seen that the multi-screen can be implemented while receiving data broadcast including video scaling.

In addition, in the embodiment of the present invention, a plurality of scalers are provided in a symmetrical or asymmetrical path so that a constant output is always possible regardless of the difference in resolution between the input video and the output video. As a result, the input / output video resolution conversion has a free processing structure.

In addition, video scaling and graphics planes can be inserted before scaling for PIP / POP / SS to reduce the burden of resolution changes caused by changes in the video window size caused by PIP / POP / SS. You can improve it.

In addition, by placing the OSD for the menu representation at the final position of the display output line, it is possible to display the menu of the highest quality that matches the display panel resolution.

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

According to the video signal output apparatus of the broadcast receiver according to the present invention, the video signal path according to the data broadcast can be controlled with PIP / POP / SS together with the display output and the monitor output, thereby supporting data broadcasting. It allows the data broadcaster to process data broadcasting at higher speed and higher quality.

In addition, it is possible to solve the limitations of the existing video processing paths and provide an easy-to-access data broadcast to consumers.

Claims (10)

A video signal output device in a broadcast receiver for outputting a data broadcast processed signal to a monitor output and a display output, A first demultiplexer for demultiplexing the main video signal and outputting it to a monitor output and a display output; A first scaler for scaling a main video signal for display output from the first demultiplexer; A graphic processor which receives a main video signal output from the first scaler and processes graphic data for data broadcasting; And a second demultiplexer for demultiplexing the signal output from the graphic processor and outputting graphic and main video signals in a data broadcast to a monitor output and a display output. The method of claim 1, A second scaler for scaling the output signal of the second demultiplexer into a multi-screen format; A third scaler for scaling the sub picture signal; A first multiplexer for multiplexing and outputting signals output from the second and third scalers; And a third demultiplexer for demultiplexing the output signal of the first multiplexer and outputting the output signal to the monitor output and the display output. The method of claim 2, And a OSD processing unit which receives the output of the first demultiplexer and implements an OSD menu of a user and outputs the OSD to a third demultiplexer. The method of claim 2, A second multiplexer for multiplexing and outputting the output of the second demultiplexer and the monitor output of the first demultiplexer; A third multiplexer for multiplexing and outputting the output of the second multiplexer and the monitor output of the third demultiplexer; A third scaler for scaling the output of the third multiplexer to a full screen format; And an encoder for encoding the scaling output of the third scaler. The method of claim 2, The first multiplexer processes the video signal as one of picture in picture (PIP), picture out picture (POP), or split screen by using the main video signal processed in data broadcasting. Output device. First and second multiplexers for multiplexing and outputting the main and sub video signals; First and second demultiplexers for demultiplexing outputs from the first and second multiplexers and outputting them to a monitor output and a display output; First and second scalers for respectively scaling a main or sub video signal for display output from the first and second demultiplexers; First and second graphic processing units which receive the main or sub video signals output from the first and second scalers and perform graphic data processing for data broadcasting; And third and fourth demultiplexers for demultiplexing the signals output from the first and second graphic processing units and outputting the main or sub video signal to the monitor output and the display output, respectively, to the graphic data in the data broadcast. A video signal output device in a broadcast receiver. The method of claim 6, Third and fourth scalers for scaling a display output signal from the third and fourth demultiplexers into a multi-screen format; A third multiplexer for multiplexing and outputting the signals output from the third and fourth scalers; And a fifth demultiplexer for demultiplexing an output signal of the third multiplexer and outputting the output signal to a monitor output and a display output. The method of claim 7, wherein And an OSD processing unit which receives the output of the third demultiplexer and implements an OSD menu of a user and outputs the OSD to a fifth demultiplexer. The method of claim 7, wherein A fourth multiplexer for multiplexing the output of the first demultiplexer and the output of the third demultiplexer and outputting the multiplexed outputs to a monitor output path; A fifth multiplexer for multiplexing the output of the second demultiplexer and the output of the fourth demultiplexer and outputting the output to the monitor output path; A sixth multiplexer for multiplexing and outputting the monitor output of the fourth multiplexer and the monitor output of the fifth demultiplexer; A seventh multiplexer which multiplexes the output of the sixth multiplexer and the output of the fifth multiplexer and outputs the output to the monitor output; A fifth scaler for scaling the output of the seventh multiplexer to a full screen format; And an encoder for encoding and outputting an output of the fifth scaler. The method of claim 7, wherein In the broadcast receiver, the third multiplexer processes the PIP (Picture In Picture), POP (Picture Out Picture), or Split Screen by using the main and sub video signals processed in data broadcasting. Video signal output device.

Images