KR19990025599A - Television's video / subtitle editing system - Google Patents

Abstract

The present invention provides a switching unit for selectively outputting a video signal and an audio signal output from a plurality of tuners and an audio system by an input operation control signal, and an OSD unit for displaying text information corresponding to the input operation control signal on a screen. A television comprising: a key input section for selecting a video / subtitle selection mode to set a desired video signal and a caption signal, a memory section for recording a plurality of video signals output from a plurality of tuners and audio systems; A caption detection unit including a caption recognition unit for detecting captions from the signals recorded in the memory unit, and a caption memory for recording the caption signal output from the caption recognition unit, and a caption detection unit, switching unit, and OSD according to the signal output from the key input unit. A microprocessor for outputting a negative operation control signal The video signal and caption signal selected by the video / subtitle editing system of the television are overlapped and output on the screen.

Description

Television's video / subtitle editing system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to television, and in particular, when a subtitle signal of another program and a video signal of another channel are edited and output on the same screen while watching a specific program, when the audio signal of a specific program is output through a speaker. A video / subtitle editing system of a television for simultaneously viewing video signals of another program and subtitle information of another program edited according to a user's selection.

In general, with the popularization of karaoke, modern people are trying to enjoy karaoke in their homes, and in order to meet this, karaoke equipment using televisions or computers have been produced and distributed to homes. In order to meet the diversification of tastes, PIP (Picture in Picture) type televisions that allow users to simultaneously watch a plurality of programs are commercially available.

1 is a block diagram showing a PIP type television having a general karaoke function.

In FIG. 1, reference numeral 1 denotes an antenna, 2a and 2b denote a tuner for selecting a broadcast signal of a channel selected by a preset voltage input from a wireless broadcast signal received through the antenna 1, In more detail, 2a represents a tuner for selecting a broadcast signal of a primary channel and 2b represents a tuner for selecting a broadcast signal of a subchannel.

5a and 5b denote P / S separation units for separating the image intermediate frequency signal PIF and the audio intermediate frequency signal SIF from the intermediate frequency signals output from the tuners 2a and 2b, and 6a and 6b denote the P / S separation units. An audio detector detects an audio signal from an audio intermediate frequency signal SIF output from the S separators 5a and 5b, and 7a and 7b represent an image intermediate frequency output from the P / S separators 5a and 5b. An image detector which detects an image signal from the signal PIF.

In addition, reference numeral 8 denotes a key input unit through which a viewer can select a desired channel or select various operation modes of the television including each mode of the television, that is, a television / karaoke mode, etc. On-screen display (OSD) for overlapping and outputting a character or picture on the screen on which the broadcast signal is output separately from the broadcast signal according to the operation control signal, reference numeral 14 denotes an input operation control A PWM generator for generating a PWM signal which is a channel tuning signal corresponding to the signal is shown.

On the other hand, reference numeral 19 denotes an audio system (LP player, CD player, etc.) having a song accompaniment function for reading data from a predetermined recording medium and outputting a video signal (background picture and lyrics) and an audio signal. A switching section for selectively outputting the audio and video signals from the audio detectors 6a and 6b and the video detectors 7a and 7b and the audio and video signals from the audio system 19 according to the switching signals. .

Further, reference numeral 21 denotes a voice processor which processes a voice signal by a predetermined process according to an input control signal although not shown for the voice signal output from the switching unit 20, and 22 denotes the voice processor. A voice amplifying unit which amplifies the voice signal processed in 21 and outputs the amplified voice signal to a speaker or earphone.

When the operation of the voice processing unit 21 is described in more detail according to the karaoke mode, the audio processing unit 21 includes an accompaniment / growth signal separation means, although not shown. Alternatively, only the accompaniment signal is separated from the voice signal selected by the switching unit 20 among the voice signals input to the tuner 2, and the voice signal of the user input from the microphone MIC is combined with the accompaniment signal and output.

Further, reference numeral 23 denotes R, Red, and G corresponding to the image signal by processing color, tint, brightness, etc. of the image signal output from the switching unit 20. (Green), B (Blue) indicates an image processing unit for outputting the signal, the RGB signal output from the image processing unit 23 is RGB which is the output signal of the above-described OSD generating unit 12 in the mixer indicated by the reference numeral 24 The signal is mixed with the signal and output to the CRT driver 26.

Reference numeral 30 denotes a microprocessor for outputting an operation control signal to various devices constituting the television on the basis of a signal input from the key input section 8 or the audio system 19.

In the above configuration, when a user wants to simultaneously watch a plurality of programs in a PIP method (for example, when a user watches a plurality of channels at the same time or a program in a predetermined channel in karaoke mode, etc.), the user has a key. When the plurality of programs are selected through the input unit 8, the microprocessor 30 recognizes this, and the main video signal is displayed on the entire screen, and the sub video signal is displayed within a predetermined corner of the screen. The main audio signal is output to the outside through the speaker, and the sub-audio signal to the outside through the earphone.

However, in the conventional television as described above, if the user wants to know the subtitle information of another program while watching a specific program, the user can know the subtitle information of another channel using the PIP mode. As described above, when the PIP method is used, a part of the screen being watched is covered, which causes inconvenience to viewing.

In addition, in the conventional television, when the user uses the karaoke mode, there is a problem in that the user cannot switch to another screen even if the background screen is not liked. A method for solving the problem caused by the background screen as described above has been proposed in Korean Patent Publication No. 96-28283.

The gist of the prior art relates to a method for displaying a background screen in a compact disc player integrated television receiver, the first disc determining whether an operation mode of the compact disc player integrated television receiver is the compact disc mode, and the compact disc in the first step. If the mode is determined, the second step of displaying a corresponding background image according to the type of compact disc to be played; and the third step of displaying a television signal or an external video signal as a background image when an external wallpaper switching key is applied. In this case, it is possible to easily provide a variety of background screens in the song accompaniment function in the compact disc mode.

However, the above-described prior art has a problem in that the switching of the background is performed only in the compact disc mode, so that the screen switching is impossible when the non-compact disc mode is not available, and the caption signals of other channels cannot be viewed.

An object of the present invention for solving the above problems is to output the audio signal of a specific program through a speaker by editing the subtitle signal of another program and the video signal of another channel while outputting the same program while watching a particular program The present invention provides a video / subtitle editing system of a television that allows a video signal of another program edited according to a user's selection and subtitle information of another program to be simultaneously viewed.

1 is a block diagram showing a schematic configuration of a conventional television

2 is a block diagram showing a television with a video / subtitle editing system according to the present invention;

Explanation of symbols on the main parts of the drawings

100: caption detection unit 110: memory unit

120: caption recognition unit 130: caption memory

A feature of the present invention for achieving the above object is a switching unit for selectively outputting a video signal and an audio signal output from a plurality of tuners and an audio system by an input operation control signal, the character corresponding to the input operation control signal A television comprising an OSD unit for displaying information on a screen, comprising: a key input unit for selecting a video / subtitle selection mode to set a desired video signal and a caption signal, and the plurality of tuners in accordance with an input operation control signal And a caption detector for detecting a caption from the video signal by selecting a predetermined signal from an image signal from an audio system, and outputting an operation control signal to the caption detector, the switching unit, and the OSD unit according to a signal output from the key input unit. Selected characterized in that it comprises a microprocessor The video signal and the caption signal is overlapped on the screen is to be output.

An additional feature of the present invention is that the caption detection unit is a memory unit for recording a plurality of video signals output from the plurality of tuners and audio systems, a caption recognition unit for detecting a caption from the signals recorded in the memory unit, and And a caption memory in which a caption signal output from the caption recognition unit is recorded.

In addition, another additional feature of the present invention is that the microprocessor outputs an operation control signal to the memory unit to select an image signal including the selected subtitle signal. The processor may output an operation control signal to the caption recognition unit so as to select an image signal including the selected caption signal from among a plurality of image signals recorded in a predetermined specific storage location of the memory unit.

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

Looking at the configuration and function of the television according to the present invention with reference to the accompanying drawings as follows.

2 is a block diagram illustrating a video / subtitle editing system of a television according to the present invention. In the exemplary embodiment of the present invention, the same parts as in FIG. 1 are denoted by the same reference numerals to avoid duplication of description.

The video / subtitle editing system of the television includes a video signal P output from a plurality of video detectors 7a and 7b and an audio system (CD player, LP player, etc.) 19 by an operation control signal input. A caption detection unit 100 for selectively recording and detecting a caption from the recorded video signal P and recording the caption in a predetermined memory means, and separating the luminance signal and the color signal from the input video signal, and then for each color band in the color signal. Extracts the demodulated image, demodulates it, and transmits the demodulated image to the CRT driver, and outputs a signal corresponding to the input operation control signal to the image processor 23 to output the caption detected by the caption detector 100 on the CRT screen. An on-screen display (OSD) display unit 12 for outputting to the screen, a key input unit 8 for selecting various operation modes including a video / subtitle selection mode of a television, and an output from the key input unit 8 It is composed of a microprocessor 30 that performs a corresponding function by operating a specific device constituting the television according to the signal, and controls each of the above-described components.

The caption detection unit 100 will be described in more detail below.

The caption detection unit 100 operates by a plurality of image detection units 7a and 7b and a memory unit 110 for recording an image signal P output from the audio system 19 and an input operation control signal. And a caption recognition unit 120 that controls and scans the captions among the signals recorded in the memory unit 110, and a caption memory unit 130 in which caption data detected by the caption recognition unit 120 is recorded.

In this case, the caption detection unit 100 detects a selected caption signal among a plurality of video signals, as indicated by a dotted line in the drawing, the microprocessor 30 outputs an operation control signal to the memory unit 110 to display a plurality of images. A predetermined video signal may be selectively recorded from among the signals, or a plurality of video signals may be recorded in the memory unit 110 at a specific recording place preset for each mode (channel or audio system), and the microprocessor ( 30 may output an operation control signal to the caption recognition unit 120 to select a video signal recorded at a corresponding recording location of the memory unit 110 to detect the caption signal.

The operation of the microprocessor 30 will be described below focusing on the image / subtitle selection mode.

When the image / subtitle selection mode signal is input from the key input unit 8, the microprocessor 30 determines an image setting signal (a signal for selecting an image signal to be output to the screen) and controls the operation by the switching unit 20. Selects a corresponding video signal by outputting a signal, determines a subtitle setting signal (a signal for selecting a subtitle signal to be output on the screen), and outputs an operation control signal to the subtitle detection unit 100 to select the corresponding video signal Subtitles are detected. The microprocessor 30 outputs an operation control signal to the OSD display unit 12 to overlap the caption data detected by the caption detection unit 100 on the selected video signal.

At this time, the output audio signal causes the signal of the predetermined program or audio system 19 to be watched to be output as it is.

One embodiment of the present invention as described above will be described in more detail below, in which the user selects the audio system 19 to listen to music of the audio system 19, and at the same time The video information of the main channel is output on the CRT, and the subtitle information of the sub channel is overlapped on the CRT.

When the user selects the audio system 19 viewing mode, the microprocessor 30 outputs an operation control signal to the switching unit 20 to select the video signal or the audio signal output from the audio system 19 so that the video signal is Output on the CRT, and the audio signal is output to the outside through the speaker.

As described above, if there is an image / subtitle selection mode signal input from the key input unit 8 while the signal of the audio system 19 is output, the microprocessor 30 switches the image setting signal input (selecting the image signal of the main channel). By judging and outputting the corresponding operation control signal to the tuner 2a and the switching unit 20, the image signal of the main channel is detected, selected, and output to the image processing unit 21.

Then, by determining the subtitle setting signal input (select the subtitle of the sub-channel), and outputs the operation control signal to the tuner (2b) to tune the sub-channel, and outputs the operation control signal to the subtitle detection unit 100 A video signal output from the video detector 7b of the channel is selected to detect caption data from the selected video signal.

At this time, the microprocessor 30 outputs an operation control signal to the OSD display unit 12 so that the caption data detected by the caption detection unit 100 overlaps the video signal selected and output by the switching unit 20. Output on the CRT.

Therefore, according to the present invention, the user can select the desired audio signal, the video signal, and the caption signal, respectively.

When providing a video / subtitle editing system for a television according to the present invention operating as described above, the subtitle signal of another program and the video signal of another channel can be edited and output on the same screen while watching a specific program, thereby making it possible to specify a specific function through a speaker. When the audio signal of a program is output, the video signal of another program and the subtitle information of another program can be simultaneously viewed according to the user's selection, thereby greatly improving the satisfaction of using the television. There is.

Claims (4)

Television comprising a plurality of tuners and a switching unit for selectively outputting the video signal and audio signal output from the audio system by the input operation control signal, and the OSD unit for displaying the character information corresponding to the input operation control signal on the screen To A key input unit for selecting a video / subtitle selection mode to set a desired video signal and a caption signal; A caption detector for detecting a caption from the video signal by selecting a predetermined signal from video signals from the plurality of tuners and an audio system according to an input operation control signal; And a microprocessor for outputting an operation control signal to the switching unit and the OSD unit according to the signal output from the key input unit. Video / Subtitle Editing System. The display apparatus of claim 1, wherein the caption detection unit comprises: a memory unit in which a plurality of video signals output from the plurality of tuners and an audio system are recorded; a caption recognition unit detecting captions among the signals recorded in the memory unit; And a caption memory in which a caption signal output from the recognition unit is recorded. The video / subtitle editing system of claim 1, wherein the microprocessor selects a video signal including a selected subtitle signal by outputting an operation control signal to the memory unit. The method of claim 1, wherein the microprocessor outputs an operation control signal to the caption recognition unit and selects a video signal including a selected caption signal from among a plurality of video signals recorded in a predetermined storage location of a memory unit. And a video / subtitle editing system for a television.