KR19990048978A - How to display captions - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to a caption display method.

I. The technical problem that the invention is trying to solve

When displaying the picture-in-picture, a caption for the sub-screen is displayed so that the user can easily grasp the progress of the television broadcast from the channel output to the sub-screen.

All. Summary of Solution of the Invention

Outputting a picture-in-picture comprising a main screen and a sub-screen; and outputting a caption for the sub-screen in response to a user commanding a caption output for the sub-screen while outputting the picture-in-picture. It is characterized by including.

la. Important uses of the invention

Used for television receivers.

Description

How to display captions

The present invention relates to a television receiver, and more particularly, to a caption display method of a television receiver.

The Picture In Picture (PIP) function of a television receiver outputs video for one channel to the main picture throughout the receiver, while video for another channel is located in the main picture. Will output Using this PIP feature, users could easily find out what channel they were watching while watching one channel. In addition, when multiple people use one television receiver, at least two channels are output to meet the needs of many people.

In general, the television receiver outputs audio of a channel output to the main screen to a speaker, and outputs audio of a channel output to the sub-screen through an additional audio output terminal. It is connected to an audio output terminal to listen to the audio of the channel output to the sub-screen.

As described above, when a user wants to listen to audio of a channel output as a sub-picture of a PIP, it is cumbersome to use an additional device such as a headphone. In addition, since the headphone and the television receiver are usually connected by wire, the distance between the headphone and the television receiver is limited, so that the user cannot move freely.

Accordingly, an object of the present invention is to provide a caption display method for displaying a caption of a channel output to a sub-screen when the PIP is output so that a user can easily grasp the progress of the channel output to the sub-screen.

1 is a block diagram of a television receiver to which the present invention is applicable;

2 is a flowchart of a caption display method according to a preferred embodiment of the present invention;

3 is a diagram showing an example of displaying a caption on a water pipe.

The present invention for achieving the above object is to output a picture-in-picture consisting of the main screen and the sub-screen, and if the user commands a caption output for the sub-screen during the output of the picture-in-picture, in response to the And outputting a caption for the sub-screen.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

First of all, in order to implement the present invention, a television broadcasting station transmits a television broadcasting signal by putting caption information on voice among audio for the program in a television broadcasting signal for a television broadcasting program.

Referring to FIG. 1, which shows a schematic configuration diagram of a television receiver to which the present invention is applicable, RF (Radio Frequency) signals received on the ground or wires are connected to the first tuner 102 through a splitter 100. The second tuner 104 is provided. The first tuner 102 outputs an IF signal (hereinafter referred to as a 'first IF signal') of a channel according to channel selection in the RF signal under the control of the controller 130. The second tuner 104 outputs an IF signal (hereinafter referred to as a 'second IF signal') of a channel according to channel selection in the RF signal under the control of the controller 130. The first IF signal and the second IF signal are input to the first IF amplifier 106 and the second IF amplifier 108, and amplified and output. The amplified first IF signal is input to the first image modulator 110 and output as a first video signal. The amplified second IF signal is input to the second image modulator 112 and output as a second video signal. The first video signal is input to a first analog to digital converter (ADC) 114 and converted into first video data. The second video signal is input to the second ADC 116 and converted into second video data. The second video data is input to a picture in picture (PIP) unit 118, and the PIP unit 118 outputs the second video data to a sub-picture of the PIP under the control of the controller 130. Sample and store the second video data. The output of the PIP unit 118 is input to the video processor 126. The second video signal is input to the data slicer 120. The data slice 120 separates data such as caption information combined with the second video signal and provides the data to the controller 130 and the caption OSD processor 124. The caption OSD processor 124 provides an output signal according to the control of the controller 130 to the video processor 126 through the third ADC 124. The video processor 126 has a video according to the video data from the first ADC 114 as a main picture, a video according to the video data from the PIP unit 118 as a sub picture under the control of the controller 130, and The video data is configured such that the video data according to the caption OSD from the third ADC 124 is positioned on the sub-screen or the main screen. The output video signal from the video processor 126 is output to the water tube CRT through the video processing and output unit 128. The controller 130 is composed of a ROM for storing an execution program and various information, a RAM for temporarily storing information generated when the program is executed, and a central processing unit for executing the program. The controller 130 controls the respective units according to various commands input through the user interface 132.

The present invention will be described in detail with reference to FIG. 2, which shows a flow chart of a caption display method according to a preferred embodiment of the present invention. The controller 130 controls the first tuner 102 to tune to the first channel in a television broadcast signal when the user watches video and audio of a channel previously tuned (hereinafter referred to as a first channel). do. The first tuner 102 outputs the IF signal for the first channel in the television broadcast signal under the control. The IF signal for the first channel is converted into a video signal through the first IF module 106 and the first image modulator 110 and then input to the first ADC 114 to be converted as video data. Video data for the first channel is provided to a video processor 126. The video processor 126 is configured in a format for outputting the video according to the video data to the whole water tube (CRT) under the control of the controller 130, and the video data and video processing unit 128 Output to the water pipe (CRT) through. In this case, the second tuner 104, the second IF module 108, the second image modulator 112, the data slice 120, the second ADC 116, and the PIP unit 118 are not driven. In this state, the controller 130 proceeds to step 200 to search whether the user commands the PIP output through the user interface 132. In this case, if the user commands the PIP output, the process proceeds to step 202, otherwise, the process proceeds to step 206 to perform the corresponding operation. In step 202, the controller 130 outputs the PIP. More detailed description is as follows. First, the controller 130 controls the first tuner 102, the first IF module 106, the first image modulator 110, and the first ADC 114 to operate as before. In addition, the controller 130 selects the second tuner 104 to tune to a channel selected by the user to output to the sub picture or a channel previously outputted to the sub picture (hereinafter referred to as a second channel) in the television broadcast signal. To control. The IF signal for the second channel output from the second tuner 104 is converted into a video signal through the second IF module 108 and the second image modulator 112 and then provided to the second ADC 116 to provide a video. It is output as data. The video data for the second channel is provided to the PIP unit 118. The PIP unit 118 samples and stores the video data and provides the same to the video processor 126. The video processor 126 outputs the video data from the first ADC 114 to the main screen under the control of the controller 130, and outputs the video data from the PIP unit 118 to the sub-screen. Configure. The video data configured as described above is output to the water pipe (CRT) through the video processing and output unit 128. At this time, the video output to the CRT is a PIP having a main screen and a sub-screen.

While the PIP screen is output as described above, the controller 130 proceeds to step 204 to search whether the user commands to output a caption for the second channel output to the sub screen through the user interface 132. In this case, when the user commands a caption output for the second channel output to the sub-screen, the controller 130 proceeds to step 206, otherwise proceeds to step 212.

In step 206, the controller 130 controls each unit to output a caption for the second channel output to the sub-screen in the sub-screen. In more detail, the controller 130 controls the caption OSD processor 124 so that the data slice 120 outputs a signal for displaying caption information extracted from the video signal for the second channel. The output signal of the caption OSD processor 124 is provided to the video processor 126 via the third ADC 124 as video data. Here, the controller 130 may set the caption display position in the sub-screen or in the main screen. This will be described with reference to FIG. 3. When the controller 130 controls the video processor 126 to output the caption display position into the subscreen S, the caption C1 is located at the bottom of the subscreen S. In this case, since the size of the sub-screen S is small, the size of the caption C1 is also displayed small. The caption C2 is located at the bottom of the main screen M when the video processor 126 is controlled to output the caption in the main screen M to display the caption in a size sufficient to be read. In this case, the caption is more free in size than when displayed on the sub-screen S.

As the controller 130 controls the video processor 126 to display the caption in the sub-screen in step 206, the video processor 126 may control the first to third ADCs such that the caption is positioned on the sub-screen. The video data output from 114, 118, and 124 are constructed. The video data configured as described above is output to the water pipe (CRT) through the video processing and output unit 128.

As described above, while the caption of the channel output to the sub-screen is output to the sub-screen, the controller 130 proceeds to step 208 to allow the user to output the caption of the channel output to the sub-screen to the main screen through the user interface. Search for command. At this time, if the user commands to output the caption of the channel output to the sub-screen to the main screen, the controller 130 proceeds to step (210). In step 210, the controller 130 configures the video data output from the first to third ADCs 114, 118, and 124 so that the caption is located on the main screen. The video data configured as described above is output to the water pipe (CRT) through the video processing and output unit 128.

As described above, the present invention has an advantage of displaying a caption for the sub-screen when the PIP is output so that the user can easily grasp the progress of the TV broadcast from the channel according to the sub-screen.

Claims (3)

In the caption display method, A picture-in-picture output step of outputting a picture-in-picture consisting of a main screen and a sub-screen; And a caption output step of outputting a caption of a channel output to the sub-screen in response to the user commanding to output a caption of the channel output to the sub-screen while the picture-in-picture is output. Display method. The method of claim 1, wherein the caption output step, Caption display method comprising the step of outputting the caption of the channel output to the sub-screen in the sub-screen. The method of claim 2, If the user commands to display the caption of the channel output to the sub-screen in the main screen while the caption of the channel output to the sub-screen is displayed in the sub-screen, the caption of the channel output to the sub-screen accordingly Caption display method further comprising the step of displaying within.