KR19980029615A - Main / sub audio automatic switching device and method using PIP TV with specific voice recognition - Google Patents

Abstract

The present invention relates to a main and sub-audio automatic switching device and method by a specific voice recognition in a PIP TV, the viewer can hear only the main audio output to the speaker when watching the video of the main screen and the sub-screen at the same time In order to solve the conventional problem of not easily understanding the image displayed on the sub-screen, when specific audio data is checked in the image displayed on the sub-screen when watching the main / sub-screen simultaneously with the CRT and listening to the main voice through the speaker A device including a main / sub audio switching means in a conventional PIP TV that outputs sub audio to a speaker and automatically converts the sub audio to a main audio of the video displayed on the main screen if a specific voice is not checked; By providing a method according to this, when the viewer watches the main / sub picture at the same time and listens to the main voice output through the speaker, the sub picture currently being watched When the specific audio signal is checked, the main audio output to the speaker is automatically switched to the sub-audio, and the viewer listens to the sub-audio for the sub-screen by the speaker when watching the specific video from the video output to the sub-screen. If the audio signal is not checked, the viewer automatically returns to the main audio so that the viewer can listen to the main screen.

Description

Main / sub audio automatic switching device and method using PIP TV with specific voice recognition

The present invention relates to a TV of PIP (Picture In Picture) mode having two tuners. More particularly, the present invention relates to watching a main picture and a sub picture simultaneously with a PIP TV, and to listening to a main voice output from a speaker. When the specific voice signal is checked on the sub-screen, the main voice output to the speaker is automatically converted to the sub-voice, and if the specific voice signal is not checked, the main voice can be returned to the main voice. / Negative automatic switching device and method thereof.

In general, a TV having a two-tuner PIP mode receives a first tuner 100 for receiving and tuning a broadcast signal transmitted from a broadcasting station as shown in the block diagram of FIG. The second tuner 120 to be tuned, the key input unit 220 to input data for operating the PIP TV, and the broadcast signal received by the first tuner 100 and the second tuner 120 to the set program. The microcomputer 200 to process the data, the memory unit 240 storing the data processed by the microcomputer 200 and the data to be processed, and the broadcast signal received by the first tuner 100. The image processor 300 processes the video signal according to the control signal of the control unit 200 and outputs the composite video board casting signal (CVBS) and the color (R, G, B) signals, and the control of the microcomputer 200. The composite image signal CVBS input by the signal and the second tuner 120 are received. A PIP processor 360 for processing a PIP mode broadcast signal and inputting it to the image processor 300, a voice processor 500 for processing a main / sub audio signal from the broadcast signal controlled by the microcomputer 200; The voice processor 500 includes a voice amplifier 520 for amplifying the voice signal processed by the voice processor 500 to a predetermined level and outputting the voice signal through the speakers 600 and 620.

In the PIP mode TV having the above configuration, when the viewer turns on the main power, the TV receives the broadcast signal transmitted from the broadcasting station through the first tuner 100, and the PIP transmitted from the broadcasting station through the second tuner 120. Receives a broadcast signal in mode. The broadcast signal received by the first tuner 100 is input to the image processor 300 and the microcomputer 200. The microcomputer 200 processes contrast, bright, and color (R, G, B) signals, which are the maximum contrast ratios of the screen with respect to the broadcast signal received through the first tuner 100, by a set program. Input to the image processor 300. Accordingly, the image processor 300 processes the broadcast signal processed by the microcomputer 200 to output vivid color (R, G, B) signals to the CRT 400 and inputs the composite video signal CVBS to the PIP processing unit. Enter at 360.

The PIP processing unit 360 processes the video signal of the broadcast signal from the composite video signal CVBS and the second tuner 120 in the PIP mode according to the control signal of the microcomputer 200, and the required color (R, G, B) data is input to the image processor 300. Thus, the image processor 300 processes the color (R, G, B) signal of the broadcast signal input from the first tuner 100 and the signal from the PIP processing unit 360 according to the control signal of the microcomputer 200 to generate a CRT ( 400) output to the screen so that viewers can watch the video on the main / sub-screen.

In addition, the microcomputer 200 inputs a main voice control signal to the voice processor 500 for outputting audio through the speaker 600 and 620 to help understand the image being watched on the main screen. The voice processor 500 processes a voice signal from a broadcast signal input from the first tuner 100, amplifies the voice signal to a predetermined level via the voice amplifier 520, and outputs the result to the speakers 600 and 620 to output the viewer. To listen to the main voice while watching the video of the main / sub-screen displayed on the CRT (400) screen.

However, in the conventional PIP TV, only the main audio outputted through the speaker can be heard when the main screen and the sub-screen video are simultaneously viewed, which causes a problem that the viewer cannot easily understand the video displayed on the sub-screen.

The present invention has been made to solve the above-mentioned problems, and for this purpose, when a viewer watches the main / sub picture at the same time and listens to the main voice output through the speaker, a specific audio signal is displayed on the sub-view currently being viewed. When it is checked, the main voice outputted to the speaker is automatically switched to the sub-audio so that the viewer can listen to the voice of the sub-screen by the speaker when watching a specific video from the video output to the sub-screen.

Another object of the present invention is to automatically return to the main audio when a specific audio signal is not checked while viewing the video output on the sub-screen so that the viewer can listen to the main screen audio.

In order to realize the present invention having the above-mentioned objects, when a certain voice data is checked in an image displayed as a sub-screen when a main / sub-screen is simultaneously watched by a CRT and the main voice is listened to by a speaker, the sub-audio is output to the speaker. If the specific voice is not checked in the video displayed on the sub-screen, the main / sub-audio switching means for automatically switching to the main audio of the video displayed on the main screen and the main / sub-screen Determining whether to convert the main voice to the sub-voice while listening to the main voice, and if there is a key input to convert to the sub-audio, select the specific sub-audio selected by the viewer, and store the specific sub-audio according to the specific sub-audio. Reading standard data, demodulating the received sub-audio signal and converting it into a digital signal to read code data of the sub-audio signal, and standard Comparing the negative data with the read code data to determine whether there is a specific negative signal in the read code data, and if there is no specific negative signal, the negative signal is returned to the standard memory unit, and if there is a specific negative signal, The process of outputting the signal, and when the sub negative signal is output, determines whether the particular sub audio signal is not checked. If the sub audio signal is checked, the sub audio continues to be output, and if the sub audio signal is not checked, the sub / main audio It is a main feature to provide a main / sub-voice switching method consisting of the process of listening to the main voice by switching the viewer.

1 is a schematic block diagram showing a television receiver in a typical picture in picture (PIP) mode.

Figure 2 is a block diagram showing a television receiver in a PIP mode with a main / sub-audio automatic switching device by a specific speech recognition in accordance with the present invention.

3A to 3B are flowcharts showing an operation relationship of a television receiver in a PIP mode including a main / sub audio automatic switching device by a specific voice recognition according to the present invention.

Explanation of symbols on the main parts of the drawings

100: first tuner 120: second tuner

200: microcomputer 220: key input unit

240: memory 260: timer

300: image processor 320: image amplifier

340: vertical / horizontal synchronization processor 360: PIP (Picture In Picture) processing unit

400: CRT (Cathode-ray Tube) 500: Voice Processor

520: voice amplifier 600,620: speaker

700: main / sub audio switching device 710: voice selection unit

712: memory section 714: standard memory section

716: voice receiver 718: demodulator

720: A / D converter 722: reader

724: comparison unit 726: output unit

728: Feed-back part

Hereinafter, a configuration according to an embodiment of the present invention will be described with reference to FIG. 2, a first tuner 100 for receiving and tuning a broadcast signal transmitted from a broadcasting station, and a second tuner for receiving and tuning a broadcast signal in a PIP mode. 120, a key input unit 220 for inputting data for operating the PIP TV, and a microcomputer for processing the broadcast signals received by the first tuner 100 and the second tuner 120 by a set program ( 200, a memory unit 240 for storing data processed by the microcomputer 200 and data to be processed, and a control signal of the microcomputer 200 by receiving a broadcast signal received by the first tuner 100. The image processor 300 processes the video signal and outputs the composite video signal CVBS and the color R, G, and B signals, and the composite video signal CVBS input by the control signal of the microcomputer 200. And the PIP mode broadcast signal received by the second tuner 120 to process the video signal. A PIP processor 360 input to the parser 300, a voice processor 500 for processing a main / sub audio signal from the broadcast signal controlled by the microcomputer 200, and a voice processed by the voice processor 500. In a PIP TV having a voice amplifier 520 for amplifying a signal to a predetermined level and outputting the same through a speaker 600 or 620, the CRT 400 simultaneously watches the main / sub picture screen and the speaker 600. When the specific voice data is checked in the video displayed as the sub-screen when the main voice is listened to by the 620, the sub-audio is output to the speakers 600 and 620, and the specific voice is not checked in the video displayed as the sub-screen. If not, it is configured to further include a main / sub-audio switching device 700 for automatically switching to the main audio of the image displayed on the main screen.

The main / sub audio switching device 700 includes a voice selection unit 710 for selecting a specific sub-voice input by the viewer through the key input unit 220, a memory unit 712 for storing the selected specific sub-audio, A standard memory unit 714 for storing standard sub-audio, a voice receiver 716 for receiving a sub-audio signal processed by the voice processor 500, a demodulator 718 for decoding the received sub-audio signal, And an A / D converter 720 for converting the demodulated sub-audio signal to a digital signal, a reading unit 722 for reading code data of the sub-audio signal input as the digital signal, and a standard memory unit 714. A comparator 724 for comparing a particular sub-audio signal input by the viewer to compare whether the sub-audio signal read by the reader 722 has a specific sub-audio signal, and the sub-audio signal compared by the comparator 724 Feedback unit 7 for returning unmatched data to standard memory unit 714 28 and an output unit 726 for outputting data to which the negative audio signal compared by the comparing unit 724 matches and inputting it to the microcomputer 200.

The means for selecting and storing all the data allows the input of the corresponding data of each part by the key input unit 220.

3A to 3B are flowcharts illustrating overall operation relations according to the present invention, which includes checking whether the TV is on (S301) and listening to the main voice while watching the main / subscreen when the TV is on (S302). And determining whether to switch the main voice to the sub-voice during the main voice listening (S303), and if there is no key input and not switching to the sub-voice during the main voice listening, the process returns to step S302, and the key input is performed. In this case, when the main voice is to be switched to the sub-audio while listening to the main voice, selecting a specific sub-audio selected by the viewer (S304), storing the selected specific sub-audio (S305), and reading standard data according to the selected sub-audio (S306), receiving a negative audio signal (S307), demodulating the received negative audio signal (S308), converting the demodulated negative audio signal to a digital signal (S309), and digitalizing Code data of negative signal Reading (S310), comparing the standard sub-voice with the read code data (S311), determining whether there is a specific sub-audio signal in the read code data (S312), and the determined result specific sub-audio signal If there is no feedback signal (S313-1), and if there is a specific negative signal, outputting the negative signal (S313), and if the negative signal is output, determining whether the specific negative signal is not checked. In operation S314, when the specific sub-audio signal is checked, the process returns to step S313, and when the specific sub-audio signal is not checked, the main voice is listened to in step S315.

Referring to the operation relationship according to an embodiment of the present invention with reference to the accompanying drawings, the viewer operates the power key of the key input unit 220 to watch the TV in the PIP mode to turn on the TV power (main power supply) ( In step S301, a broadcast signal transmitted from a broadcasting station is received through the first tuner 100, and a broadcast signal of a PIP mode transmitted from the broadcast station is received through the second tuner 120. The broadcast signal received by the first tuner 100 is input to the image processor 300 and the microcomputer 200. The microcomputer 200 processes contrast, bright, and color (R, G, B) signals, which are the maximum contrast ratios of the screen with respect to the broadcast signal received through the first tuner 100, by a set program. Input to the image processor 300.

Accordingly, the image processor 300 processes the broadcast signal processed by the microcomputer 200 to output vivid color (R, G, B) signals to the CRT 400 and inputs the composite video signal CVBS to the PIP processor. Enter at 360. The PIP processing unit 360 processes the video signal of the broadcast signal from the composite video signal CVBS and the second tuner 120 in the PIP mode according to the control signal of the microcomputer 200, and the required color (R, G, B) data is input to the image processor 300. Thus, the image processor 300 processes the color (R, G, B) signal of the broadcast signal input from the first tuner 100 and the signal from the PIP processing unit 360 according to the control signal of the microcomputer 200 to generate a CRT ( 400) output to the screen so that viewers can watch the video on the main / sub-screen.

In addition, the microcomputer 200 inputs a main voice control signal to the voice processor 500 for outputting audio through the speaker 600 and 620 to help understand the image being watched on the main screen. The voice processor 500 processes a voice signal from a broadcast signal input from the first tuner 100, amplifies the voice signal to a predetermined level via the voice amplifier 520, and outputs the result to the speakers 600 and 620 to output the viewer. While listening to the main / sub-screen image displayed on the CRT (400) screen to listen to the main voice (S302).

While listening to the main voice output to the speaker 600 and 620 while watching the video of the main / sub picture, the microcomputer 200 outputs the main voice to the current speaker 600 and 620 according to the set program. It is determined whether to switch to (S303). As a result of the determination, if there is no key input for switching the main / sub audio in the key input unit 220, the microcomputer 200 continues to watch the main / sub picture of the image processed by the image processor 300 through the CRT 400 screen. Through the speaker 600 and 620, the voice processor 500 may listen to the amplified sub-voice.

On the other hand, if there is a key input for switching the main / sub-audio in the key input unit 220 as a result determined in step S303, the microcomputer 200 is the main / sub-audio switching device ( The control signal is input to the voice selector 710 of 700. Therefore, the voice selector 710 selects a specific sub-voice selected by the viewer according to the control signal of the microcomputer 200 (S304), stores the selected sub-audio in the memory unit 712 (S305), and the standard memory unit. Enter in 714. That is, the standard memory unit 714 reads the selected sub-audio signal when the standard voice data stored therein and the data of the input sub-audio signal are read (S306) and inputs it to the comparison unit 724.

At this time, the voice receiver 716 receives the sub-audio signal processed by the voice processor 716 as an analog signal (S307), decodes the demodulated signal received through the demodulator 718, and demodulates (S308) the A / A. The D conversion unit 720 converts the negative audio signal to a digital signal (S309).

The sub-audio signal converted into the digital signal by the A / D converter 720 reads the code data (1,0) of the sub-audio signal through the reader 722 (S310) and inputs it to the comparator 724. do. Accordingly, the comparison unit 724 compares the code data of the standard sub-audio signal input from the standard memory unit 714 and the sub-audio signal input from the reading unit 722 (S311) to identify the specific sub-audio signal to the read code data. It is determined whether there is (S312). If there is no specific negative audio signal as a result of the determination, the negative audio signal is returned to the standard memory unit 728 through the feedback unit 728 (S313-1) to be performed again from the process.

On the other hand, the comparison unit 724 compares the code data of the standard sub-audio signal input from the standard memory unit 714 and the sub-audio signal input from the reading unit 722 (S311) and the specific sub-voice to the read code data. As a result of determining whether there is a signal (S312), if there is a specific negative audio signal, the negative audio signal is output through the output unit 726 (S313) and input to the microcomputer 200. Accordingly, the microcomputer 200 outputs a control signal for converting the main voice into a sub voice to process the voice signal to the voice processor 500 so that the voice processor 500 receives the voice signal of the broadcast signal received by the second tuner 120. By processing and outputting a specific sub-voice to the speaker 600 and 620 through the voice amplifier 520, the viewer can listen to the specific sub-audio while watching the main / sub-image displayed on the screen of the CRT (400) do.

When the specific sub-audio is output to the speakers 600 and 620, the microcomputer 200 determines whether the specific sub-audio signal is not checked (S314). As a result of the determination, if the specific sub-audio signal is checked, the process is performed again from the process of step S313.

On the other hand, if it is determined in step S314 that the specific sub-audio signal is not checked, the microcomputer 200 outputs a control signal for processing by converting the sub-audio to the main voice to the voice processor 500 to the voice processor 500 Process the voice signal of the broadcast signal received by the first tuner 100 and output the main voice to the speakers 600 and 620 through the voice amplifier 520, so that the viewer is displayed on the screen of the CRT 400. The main voice can be listened to while watching the main / second video (S315).

As described above, in the present invention, when a viewer watches the main / sub picture at the same time and listens to the main voice output through the speaker, the main voice outputted to the speaker is checked when a specific voice signal is checked on the currently viewed sub screen. When the viewer is watching a specific video from the video that is output to the sub-screen, the viewer automatically listens to the sub-audio for the sub-screen.If a specific audio signal is not checked, the viewer automatically returns to the main audio and the viewer returns to the main screen. Has the effect of listening to the voice on.

That is, when listening to the main audio while watching the main / sub picture, the sub audio is automatically output when the specific audio signal is checked in the video displayed on the sub screen, and the main audio is output when the specific sub audio is completed. It can be.

In the above description of the PIP TV according to an embodiment of the present invention for the automatic switching of the main / sub-voice by a specific voice recognition, the present invention is not limited to this, and those skilled in the art can be applied and modified in various ways will be.

Claims (3)

The first tuner 100, the second tuner 120 for receiving a broadcast signal, the microcomputer 200 for processing the broadcast signals received at the first tuner 100 and the second tuner 120, and the first tuner. The video signal received by the processor 100 to the image processor 300 to process the video signal by the control signal of the microcomputer 200, the signal input by the control signal of the microcomputer 200 and the second tuner 120 A PIP processing unit 360 for processing the received PIP mode broadcast signal and inputting it to the image processor 300, a voice processor 500 for processing the main / sub audio signal from the broadcast signal controlled by the microcomputer 200, In a PIP TV having a voice amplifier 520 for amplifying a processed voice signal to a predetermined level and outputting the same through a speaker 600 or 620, the CRT 400 simultaneously watches a main / sub picture and a speaker. When listening to the main voice with (600) (620), if the specific voice data is checked in the video displayed as the sub-screen, the speaker 600 (620) with the sub-audio is checked. In the PIP TV, characterized in that the output includes a main / sub-audio switching device 700 for automatically switching to the main audio of the video displayed on the main screen if a particular voice is not checked in the video displayed on the sub-screen Main / sub-voice automatic switching device by specific voice recognition. The apparatus of claim 1, wherein the main / sub audio switching device 700 includes a voice selection unit 710 for selecting a specific sub-voice input by the viewer through the key input unit 220, and a memory for storing the selected specific sub-audio. A unit 712, a standard memory unit 714 for storing a standard sub-voice, a voice receiver 716 for receiving a sub-audio signal processed by the voice processor 500, and a decoding of the received sub-audio signal. A demodulation unit 718, an A / D converter 720 for converting the demodulated sub-audio signal to a digital signal, a reading unit 722 for reading code data of the sub-audio signal input as a digital signal, and a standard The comparator 724 and the comparator 724 which receive a specific sub-audio signal input by the viewer from the memory unit 714 and compare whether the sub-audio signal read by the reader 722 has a specific sub-audio signal. Data to which the compared negative audio signal does not match is sent to the standard memory unit 714. A return unit 728 and an output unit 726 for outputting data matching the negative audio signal compared by the comparison unit 724 and inputting it to the microcomputer 200. Automatic main / sub audio switching device by recognition. A method of switching between main and sub audio in a PIP mode TV, comprising: determining whether to convert a main voice to a sub audio while listening to the main voice while watching the main / sub picture, and switching to a sub audio with a key input If you want to select a specific sub-audio selected by the viewer to store the specific sub-voice, and then read the standard data according to the specific sub-voice, and demodulate the received sub-audio signal into a digital signal to convert the code data of the sub-audio signal A process of reading, comparing the standard sub-audio with the read code data to determine whether there is a specific sub-audio signal in the read code data, and returning the sub-audio signal to the standard memory unit if there is no specific sub-audio signal, If there is a voice signal, the process of outputting a sub-audio signal, and if the sub-audio signal is output, determines whether a particular sub-audio signal is not checked. If the audio signal is checked, the sub-audio is continuously outputted, and if the specific sub-audio signal is not checked, the main / sub-audio by the specific voice recognition is automatically performed on the PIP TV. How to switch.