KR100269155B1 - Apparatus and method for controlling output of caption signal and audio signal in the video/audio processing unit - Google Patents

Abstract

PURPOSE: A device for controlling outputs of a caption signal and an audio signal in an image/voice processing device is provided to automatically display telephone receiving information, and to mute a voice output to display a voice signal of a program as a caption. CONSTITUTION: Image/voice processors(105,103) process image/voice signals inputted from a broadcast signal or a recording/reproducing device, and turn on/off a voice mute according to the first control signal. A data detector(108) detects caption data included in the signals inputted from the image/voice processors(105,103). A caption decoder(109) decodes the detected caption data according to the second control signal. An interface(112) accords a signal standard inputted from a communication equipment with a signal standard of an image displayer. A character generator(110) generates a character signal according to a character generating control signal. A controller(111) corresponds to inputted signal kinds of the interface(112), and generates the first control signal, the second control signal and the character generating control signal. The first control signal turns on/off the voice signal. The second control signal turns on/off a caption decoder. The character generating control signal is generated according as the communication equipment is connected.

Description

Apparatus and method for controlling subtitle signal and audio signal output in video / audio processing device

The present invention relates to an apparatus and method for controlling subtitles and audio output of an image / audio processing apparatus, and more particularly, to automatically display information on a call reception, to mute an audio output, and to display an audio signal of a program as a subtitle. The present invention relates to a caption signal and an audio signal output control apparatus and method in a video / audio processing apparatus.

In general, if you answer a call while watching television, the sound of the television will interfere with the call. Therefore, in order to improve this, it is possible to manually output only the video signal using the audio mute key. However, when the television is in the audio mute state, it is difficult for the viewer to grasp the contents of the program only by the image information displayed on the display device.

In order to solve this problem, in case of manually muting the voice when answering a phone call, the contents of the program could be identified by displaying the dialogue contents of the program in the caption using the caption function.

Accordingly, according to the related art, when a dial-up request signal is generated, the information is not displayed, and when the voice volume of the television is set to a large amount, it is inconvenient to know whether to receive a call.

In addition, according to the prior art, there is a problem in that there is an operation inconvenience in that subtitle processing is performed on the voice information of a program only when the voice mute mode is manually performed, and the voice mute must be manually released after the call is answered.

The technical problem to be solved by the present invention is to display the subtitle information when receiving a call in order to solve the above-mentioned problem, and to mute the voice automatically when the hook is "off" to raise the handset to answer the call. Subtitle signal and audio signal output control device and method in a video / audio processing device which simultaneously displays subtitle information of a program's voice, and releases the audio mute and returns to the original state when the call is terminated and the hook is "on". To provide.

1 is a block diagram of a caption signal and audio signal output control apparatus in a video / audio processing apparatus according to the present invention.

2 is a flowchart illustrating a method for controlling caption and audio signal output in a video / audio processing apparatus according to the present invention.

In order to achieve the above technical problem, a caption signal and audio signal output control apparatus of a video / audio processing apparatus according to the present invention is a caption and audio output control apparatus of a video display apparatus to which a communication device is connected. A video / audio processor for processing a video / audio signal input from a playback device and turning on / off a voice mute according to a first control signal, and for detecting caption data included in a signal input to the video / audio processor A data detection unit, a caption decoder for decoding caption data detected by the data detection unit according to a second control signal, an interface unit for matching a standard of a signal input from the communication device to a signal standard of the video display device, and the caption Depending on the output signal of the decoder or the character generation control signal A first control signal for muting on / off a voice signal, a second control signal for turning on / off the caption decoder, corresponding to a type of a text generation unit for generating a text signal and an input signal of the interface, and the communication device And a controller for generating a character generation control signal.

In order to achieve the above technical problem, a method for controlling caption signal and audio signal output in a video / audio processing apparatus according to the present invention is a method for controlling caption and audio output of an image display apparatus connected to a communication device, the method comprising: (a) Determining whether a connection request signal is detected by the communication device; (b) when the reception signal is detected as a result of the determination of step (a), indicating that the connection request is generated on the video display device; (C) determining whether a communication connection has been made in response to the connection request, and (d) when the communication connection is established as a result of the determination of step (c), muting the audio of the video display device, and captioning. Mode "on" to process and display the audio of the image display apparatus as a caption signal and display the same; .

In step (d), (a ') determining whether the communication connection is terminated, and (b') when the communication connection is terminated as a result of the determination of step (a '), the voice mute is released, and It is effective to further include a step for "off" the caption mode.

Prior to describing the present invention, a caption function will be described.

The caption refers to a function of demodulating the caption signal encoded by the program's audio signal to the video signal, and demodulating the caption decoder to display the audio signal of the program as captions.

The caption function was developed for the hearing impaired, but is currently used for various language learning. Accordingly, televisions and video cassette tape recorders with a built-in caption function have become widespread.

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

FIG. 1 illustrates an example of an apparatus for controlling a caption signal and an audio signal output in a video / audio processing apparatus according to the present invention, and employs a television as an example of the video / audio processing apparatus. The apparatus shown in FIG. 1 includes an antenna 101, a tuner 102 for selecting and outputting a broadcast signal introduced from the antenna 101, and a voice processor for demodulating and outputting a voice signal of a channel selected by the tuner 102 ( 103), the speaker 104 for outputting the demodulated audio signal, the image processing unit 105 for demodulating and outputting the video signal of the channel tuned by the tuner 102, the matrix operation of the demodulated video signal, and the R, G of the CRT. And demodulate the caption data detected by the data detector 108 and the data detector 108 that extract only the caption data mixed in the video signal. The caption decoder 109, the character generator 110 for generating a character signal corresponding to the demodulated caption data or the character generation control signal, the control unit 111 for controlling each block, and data specifications with an external connected device. Matching first and second interfaces 112 and 115, As an example of the communication device, there is provided a recording / reproducing device 114 such as a telephone 113 and a video cassette tape recorder.

The broadcast signal input through the antenna 102 is input to the voice processing unit 103 after tuning the broadcast signal of the channel selected by the user through the tuner 102. The broadcast signal of the tuned channel is separated from the audio signal and the video signal through a filter (not shown) by the audio processing unit 103 and the image processing unit 105, and then demodulated and demodulated, respectively, to the speaker 104. Is reproduced and demodulated, and the R, G, B driving unit 106 performs a matrix operation to obtain R, G, B signals, and then reproduces them in the CRT 107 by these signals.

If the caption data is mixed with the broadcast signal of the channel tuned through the tuner 102, the data detector 108 extracts only the caption data and applies it to the caption decoder 109.

Then, the caption decoder 109 demodulates the caption data only when the caption on control signal is generated according to the caption on / off control signal generated by the control unit 111 by the user's selection. Will output

The character generator 110 reads a character signal corresponding to the demodulated caption data from the internal memory (not shown) and outputs it to the R, G, and B drivers 106.

Then, the R, G, B driver 106 subtitles the text signal input from the character generator 110 on the demodulated video signal input from the image processor 105 to display the text signal through the CRT 107.

If the caption function is not built into the television, the caption function can be executed using the caption block of the recording / playback device 114 connected to the outside. That is, when the control unit 111 transmits a caption function execution command to the recording / playback device 114 connected to the outside through the second interface unit 115, the broadcast signal or the playback signal of the channel tuned by the tuner 102. Image / audio processing and caption data processing through an internal image processing unit, an audio processing unit, a caption processing block, and the like of the recording / playback device 114 to the audio processing unit 103, the image processing unit 105, and the character generator 110. By outputting, the caption function is supported by the recording / reproducing apparatus 114.

Then, while the user is watching television, a telephone ring is generated to the telephone 113 connected to the television, and the communication connection is made in response to the connection request, and the audio signal output and the subtitle signal until the communication connection ends. The control processes of will be described with reference to FIG. 1 with reference to the flowchart of FIG.

In step 201, it is determined whether a telephone call is made to the telephone 113 connected to the television. If the connection request signal is generated in the telephone 113, the connection request signal is input to the control unit 111 of the television via the first interface 112. Accordingly, the controller 111 repeatedly determines whether a connection request signal is input.

In step 202, when a connection request signal is input to the control unit 111, the control unit 111 generates a character generation control signal corresponding to "phone ringing" to notify that there is a telephone connection request. Output to the unit (110). Then, the character generator 110 reads out the character signal corresponding to the character generation control signal from the built-in memory and outputs it to the R, G, B driver 106. Accordingly, the R, G, and B driving unit 106 superimposes the caption "telephone ringing" on the input video signal to display through the CRT 107.

Accordingly, even when the viewer does not recognize the ringtone while watching a broadcast program, the viewer can easily know that the call is received through the subtitle displayed on the screen.

In step 203, after the viewer recognizes that there is a dial-up request, the receiver picks up the handset accordingly to determine whether a communication connection is established. The communication connection is determined by detecting an on / off state of the hook switch of the telephone 113.

In step 204, when the hook switch of the telephone 113 is " off ", the controller 111 applies the first control signal to the voice processor 103 to mute the voice signal. Then, the voice processing unit 103 blocks the output of the voice signal by the first control signal so that the voice signal is not output through the speaker 104.

In step 205, when the telephone connection request is made by the command of the control unit 111, the phrase " telephone ringing " displayed through the caption of the screen disappears from the screen.

In step 206, after the control unit 111 determines whether the television includes a caption function block, and if the television does not embed the caption function block, the caption is output from the external recording / reproducing apparatus 114 connected to the television. Determine if the feature can be supported.

In step 207, the caption mode is turned "on" when the television has a built-in block of caption function. Accordingly, when caption data is included in the broadcast signal input or the playback signal input from the recording / reproducing apparatus 114, the caption data is extracted by the data detector 108 and caption demodulation is performed by the caption decoder 109. After execution, the caption character signal is output to the R, G, and B driving units 106 by the character generator 110, and the characters corresponding to the audio signal are displayed on the CRT 107 as captions. However, if caption data is not contained in the input broadcast signal or reproduction signal, the audio signal cannot be subjected to subtitle processing.

If the television does not have a built-in block of caption function, and the caption function of the recording / playback device 114 connected to the outside is supported, the control unit 111 controls the caption mode through the second interface unit 115. A command for receiving assistance is input to the recording / reproducing apparatus 114 to execute the caption mode with the support of the block of the caption function of the recording / reproducing apparatus 114.

In step 208, as a step of determining whether the communication connection is terminated, the control unit 111 determines whether the call path is disconnected because the hook of the telephone 113 is "on".

In step 209, when the hook of the telephone 113 is " on ", the control unit 111 " off " the voice mute to the voice processing unit 103 so as to output a normal voice signal through the speaker 104. 1 Apply the control signal.

In operation 210, a second control signal for "off" the caption mode is applied to the caption decoder 109 to end the display of the audio signal as text through the caption.

Through these steps, when a call is received while watching television, information about the call is displayed through subtitles on the screen so that viewers can easily recognize the call. By automatically muting the signal, captioning the audio signal and displaying it through subtitles, it is easy to grasp the contents of the program during a phone call.

As described above, according to the present invention, when a communication connection request is generated through a communication device connected to the video / audio processing device, information about the communication is displayed through captions, and when the communication path is connected to the communication connection, the caption function is activated. "On" to mute the voice, and when the end of the call "off" the caption function and the voice mute, you can easily know the connection request of a communication device such as a telephone while watching the program, and automatically caption There is an effect that the contents of the program can be known through subtitles while facilitating a call by performing on / off and voice mute on / off.

Claims (5)

In the caption and audio output control apparatus of the video display device connected to the communication device, A video / audio processor for processing a broadcast signal or a video / audio signal input from a recording / reproducing apparatus and for turning on / off a voice mute according to the first control signal; A data detector for detecting caption data included in a signal input to the video / audio processor; A caption decoder for decoding caption data detected by the data detector according to a second control signal; An interface unit for matching a standard of a signal input from the communication device to a signal standard of the image display apparatus; A character generator for generating a character signal in accordance with an output signal of the caption decoder or a character generation control signal; And According to the type of the input signal of the interface, the first control signal to mute the audio signal on / off, the second control signal to turn on / off the caption decoder, the character generation control signal according to whether the communication device is connected or not And a control unit for controlling a caption signal and an audio signal output in the video / audio processing device. In the subtitle and audio output control method of the video display device connected to the communication device, (a) determining whether a connection request signal to the communication device is detected; (b) if the reception signal is detected as a result of the determination of step (a), displaying on the image display apparatus that a connection request has occurred to the communication device; (c) determining whether a communication connection is made in response to the connection request; And (d) when the communication connection is established as a result of the determination of step (c), muting the audio of the video display device, and turning on the caption mode to process and display the audio of the video display device as a subtitle signal. Subtitle signal and audio signal output control method in a video / audio processing apparatus comprising a. The method of claim 2, wherein in step (d) (a ') determining whether the communication connection is terminated; And (b ') when the communication connection is terminated as a result of the determination of step (a'), canceling the audio mute and further "turning off" the caption mode. Subtitle signal and audio signal output control method in. The method of claim 2, wherein the detecting of the connection request signal in the step (a) is performed by detecting whether a telephone call signal is generated or not. . The method of claim 2 or 3, wherein the determining of the communication connection is performed by detecting hook on / off of the telephone.