KR100399590B1 - TV with ambient sound for headphone use - Google Patents

Abstract

According to the present invention, when a television broadcast is watched using headphones, the surrounding voice is converted into text and displayed, and a viewer using a wired or wireless headphone recognizes the text of the displayed ambient sound to determine the surrounding situation. The present invention relates to a television capable of recognizing ambient sound for use of a headphone, which includes a headphone output means for transmitting a received audio signal by wire or wirelessly, an OSD unit (50) for displaying and displaying OSD characters, In a television equipped with a microcomputer 20 that controls the headphone output means and the OSD unit 50, and controls the overall operation of the television, a microphone 90 for picking up external sound and converting it into an electrical signal and outputting the microphone; Filter unit 100 for extracting the home band from the signal from 90, and converts the audio signal of the filter unit 100 into a digital signal In addition, the microcomputer 20 including the voice recognition unit 100 to process the voice recognition process controls the OSD unit 50 to control the text recognized by the voice recognition unit 100 in the headphone mode driving the headphone output unit. By controlling the display with subtitles, viewers with wired or wireless headphones can recognize the surrounding voice through the displayed subtitles.

Description

TELEVISION CAPABLE OF RECOGNIZING EXTERNAL VOICE FOR USING WIRE OR WIRELESS HEADPHON

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television capable of recognizing ambient sounds for the use of headphones. Particularly, when a television broadcast is watched using a wired or wireless headphone, a surrounding voice is converted into a character and displayed to display a viewer using the headphones. The present invention relates to a television capable of recognizing the surrounding sound for use of a headphone to recognize the character of the displayed ambient sound to determine the surrounding situation.

In general, a headphone, in particular a wireless headphone, is a very useful device for receiving and demodulating remotely an RF audio signal output from a home appliance, for example, a television or an audio system, for listening to a headphone speaker. .

More specifically, the operation of the wireless headphones, as shown in the block diagram of the conventional typical wireless headphones and home appliances of Figure 1, the home appliance 100 (e.g., TV, audio system) is a control unit ( 110, a modulator 120, a transmitter 130, and the wireless headphone 200 includes a receiver 210, a demodulator 220, and an audio signal processor 230.

In the drawing, the home appliance 100 generates an audio signal to be output to a speaker based on a predetermined driving unit, not shown, based on the control unit 110 that controls the overall operation of the home appliance. The audio signal can be output not only to a speaker built in itself, but also to be modulated and transmitted to an RF signal so that the audio signal can be listened to using a wireless headphone 200, which will be described later. The audio signal driven and applied based on the control is modulated and output based on a predetermined RF signal, and the transmitter 130 transmits a modulated RF signal including the audio signal.

Meanwhile, the receiver 210 of the wireless headphone 200 receives and outputs an RF signal including an audio signal, and the demodulator 220 detects and outputs an audio signal by RF demodulating the signal from the receiver 210. The audio signal processor 230 processes the signal from the demodulator 220 as an outputable audio signal and applies it to the left and right speakers SP _L and SP _R so that the user is remotely separated from the home appliance 100 by a predetermined distance. In the home appliance 100 can listen to the audio.

However, in the case of using such wireless headphones, the user usually uses the audio volume at a high level, and in this case, the user cannot hear various sounds generated by the wearing of the wireless headphones. As a result, the user of the wireless headphone does not recognize various situations such as ringing the phone, ringing the doorbell, or calling himself.

On the other hand, the Republic of Korea Patent Nos. 97-7623 and 97-7624, when using the wireless headphones, to detect the doorbell switch on / off in order to recognize the visitor when the doorbell switch is turned on to generate a specific sound with the wireless headphones The volume of the audio output to the output or wireless headphones is reduced so that the user is aware of the visitor.

However, this method has a problem that can only confirm the presence of the visitor to the user when using the wireless headphones.

On the other hand, Korean Patent Laid-Open Publication No. 97-57580 discloses that when a user listens to a wireless headphone, the user detects an external noise level, generates voice data based on the detection, and transmits the sound data to the wireless headphone, thereby recognizing the sound generated by the user. You can do it.

However, in this method, only external noise cannot be accurately extracted and transmitted to the wireless headphones. There is a problem in that sound generated by the speaker of the TV is misrecognized as external noise and output to the wireless headphones to generate a voice ghost.

Therefore, in the present invention, when a television viewer is watching a desired broadcast program using a wired or wireless headphone, a method of processing the external sound as a caption and displaying the same by using a voice recognition means has been sought.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to detect external sound when a wired or wireless headphone provided in a television is used and display it as a text subtitle on a screen, thereby providing a user with a headphone. The present invention provides a television capable of recognizing ambient sound for use of a headphone so that an external sound can be recognized even when watching a desired broadcast program in a state in which the external sound is blocked.

1 is a block diagram of a typical typical wireless headphone and home appliance

2 is a block diagram of a television capable of recognizing ambient sound for use of a headphone according to an embodiment of the present invention.

3 is a block diagram of a television capable of recognizing ambient sound for the use of headphones according to another embodiment of the present invention.

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

10: key input unit 20: microcomputer

30: tuner 40: video and audio signal processing unit

50: OSD 60: Monitor

70: speaker 80: wireless headphone output

90: microphone 100: filter unit

110: speech recognition unit 120: second speech recognition unit

A television capable of recognizing ambient sound for use of a headphone according to the present invention includes a headphone output means for wirelessly transmitting a received audio signal, an OSD portion for displaying OSD text, and controlling the headphone output means and an OSD portion. In a television equipped with a microcomputer for controlling the overall operation of the television, a microphone for picking up external sound and converting the signal into an electrical signal, a filter for extracting a home band from the signal from the microphone, and an audio signal for the filter A voice recognition unit for converting a digital signal into a voice recognition process, and the micom for controlling the OSD unit to display the voice recognized by the voice recognition unit in a wireless headphone mode for driving the headphone output unit, by controlling the OSD unit. Characterized in that made.

The apparatus may further include a second voice recognition unit for converting an audio signal applied to a television speaker into a digital signal and processing a voice recognition. The microcomputer may further include a voice recognized by the second voice recognition unit and a voice recognized by the voice recognition unit. In comparison, only the voices not recognized by the second voice recognizer among the voices recognized by the voice recognizer may be controlled to display by text caption by controlling the OSD unit.

In addition, the voice recognition unit is provided with a predetermined number of various telephone ring sounds and doorbell sounds, and when the telephone ringer and the doorbell sound are recognized, the telephone ringer and the doorbell sound are recognized as a predetermined voice and output to the micom, and the micom is a telephone bell The ringing or the doorbell ringing is characterized in that by controlling the OSD to display and control the character subtitles.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

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

FIG. 2 is a block diagram of a television capable of recognizing ambient sound for using a wireless headphone according to an embodiment of the present invention, and includes a key input unit 10, a microcomputer 20, a tuner unit 30, an image and audio signal processor. 40, the OSD unit 50, the monitor 60, the speaker 70, the wireless headphone output unit 80, the microphone unit 90, the filter unit 100 and the voice recognition unit 110 do.

In such a configuration, the key input unit 10 is provided as an input means for operating a television, and has a plurality of keys for driving a television including a predetermined key for switching to a wireless headphone mode to correspond to a user's key operation. A key signal is output, and a key signal corresponding to a key operation is transmitted on an infrared carrier using a remote controller that can be input at a remote location, and the television main body demodulates, detects, and amplifies the received infrared carrier to be described later. It is applied to the microcomputer 20.

The microcomputer 20 controls the overall operation of the television by controlling the tuner 30, the image and audio signal processor 40, and the OSD unit 50 based on the key signal from the key input unit 10. In particular, when a predetermined key signal for switching from the key input unit 10 to the wireless headphone mode is applied, the wireless headphone output unit 80 is controlled so that the audio signal processed by the image and audio signal processing unit 40 is applied to the predetermined RF signal. Then, the wireless transmission control is performed, and the voice recognition unit 110 is controlled to control the OSD unit 50 based on the voice data recognized and applied by the voice recognition unit 110 to display the sound generated on the screen. Controlled to be processed.

Also, the tuner unit 30 outputs a broadcast signal received by being tuned to a channel corresponding to the control of the microcomputer 20.

On the other hand, the video and audio signal processing unit 40 separates and detects a broadcast signal received from the tuner unit 30 as a video (VIF) and a voice (SIF) signal under the control of the microcomputer 20, and demodulates each of them. And an amplifying process, the processed video signal is applied to the OSD unit 50 and the processed audio signal is output to the speaker 70.

In addition, the OSD (On Screen Display) unit 50 transmits an OSD text signal corresponding to the control of the microcomputer 20 to an image signal applied from the image and audio signal processor 40 or a blue back signal generated by itself. A character screen display means for synthesizing and outputting to the monitor 60, comprising: a character ROM for storing and exporting an OSD character font; a ROM for storing a program for controlling the OSD character display; and a RAM for operating a program for controlling the OSD character display. And displaying and controlling the OSD characters on the basis of a timing unit for determining the timing of the horizontal and vertical positions of the OSD, and a control signal for OSD character size conversion and OSD character type selection from the microcomputer 20. The display generator outputs an RGB signal and a vertical blanking signal.

On the other hand, the microphone 90 picks up the television ambient sound and converts it into an electrical signal for output.

In addition, the filter unit 100 filters and outputs only a home frequency band from a signal applied from the microphone 90.

Meanwhile, the voice recognition unit 110 is driven under the control of the microcomputer 20 to digitally convert an audio signal applied from the filter unit 100, and compare the digitally converted signal with a pre-stored voice pattern to perform digital conversion. When the recognized signal is recognized as a voice that can be represented by a character, voice data indicating the recognized character is output to the microcomputer 20.

In addition, the voice recognition unit 110 includes various types of ringing bells or doorbell sounds together with the voice pattern, and if the audio signal applied from the filter unit 100 matches the previously stored low ringing bell or doorbell sound pattern, Voice data (e.g., doorbell, telephone ringing character) is applied to the microcomputer 20.

Next, an operation process of a television capable of recognizing ambient sound for using a wireless headphone according to an embodiment of the present invention having the above-described configuration will be described in detail.

First, when a channel is selected based on a predetermined key operation for channel selection of the key input unit 10, the microcomputer 20 controls the tuner unit 30 to tune to the selected channel and receives the tuner unit 30. The broadcast signal is processed into a displayable image and an audio signal capable of output by the image and audio signal processor 40, and output to the monitor 60 and the speaker 70, respectively, so that a user can watch a desired broadcast program.

Meanwhile, at this time, the user operates a predetermined key for switching to the wireless headphone mode provided in the key input unit 10 in order to use the wireless headphone, and the microcomputer 20 recognizes this and drives the wireless headphone output unit 80. Control.

Then, in the wireless headphone output unit 80, the audio signal processed by the video and audio signal processing unit 40 is carried on a predetermined RF signal and transmitted wirelessly. At this time, the user can selectively block the audio output to the speaker 70 provided in the television, this process is made possible by a predetermined key operation provided in the key input section (10).

On the other hand, when the audio output to the speaker 70 is cut off and the wireless headphone output unit 80 is in a driving state, the microcomputer 20 controls the voice recognition unit 110 to recognize the voice around the television.

That is, the microphone 90 picks up the ambient sound of the television, and the filter unit 100 filters only the frequency signals of the home bands from the electric voice signals picked up by the microphone 90 and outputs them to the voice recognition unit 110. do.

Then, the voice recognition unit 110 converts the voice signal applied from the filter unit 100 into a digital signal, and compares the digitally converted voice signal with a pre-stored voice (text) pattern to represent the voice signal. The voice data corresponding to the text is output to the microcomputer 20, and if the digitally converted voice signal is stored in the ringtone pattern or the doorbell sound pattern, the microcomputer 20 displays the voice data for displaying the corresponding text. Will output

Accordingly, the microcomputer 20 controls the OSD unit 50 based on the voice data applied from the voice recognition unit 110 to display the text corresponding to the voice data on the monitor 70 as captions.

As a result, the user wearing the wireless headphones can recognize the surrounding voice through the text subtitles while watching the desired broadcast program through the wireless headphones and the monitor.

FIG. 3 is a block diagram of a television capable of recognizing ambient sound for using a wireless headphone according to another embodiment of the present invention, and further includes a second voice recognition unit 120 in the component of FIG. 2.

In the same figure, the second voice recognition unit 120 converts an audio signal applied to the speaker 70 into a digital signal and uses the changed digital signal to express the text in the same manner as the voice recognition unit 110. Recognize and apply the recognized voice data to the microcomputer 20.

In addition, when the microcomputer 20 outputs the same voice signal to the speaker 70 as the voice signal output to the wireless headphone output unit 80, the microcomputer 20 receives the voice recognition unit 110 and the second voice recognition unit 120. Comparing the applied voice data with each other, the voice recognized by the voice recognition unit 110 is controlled to display the text caption by controlling the OSD unit 50, but the voice recognized by the voice recognition unit 110 and the second voice recognition If the voice is identical to the voice recognized by the unit 120, the voice recognized by the voice recognizer 110 is not the second voice recognition unit 120 without controlling the display of the voice recognized by the voice recognition unit 110 as text subtitles. Only when the voice is different from the recognized voice, it determines the peripheral sound and performs OSD text subtitle processing.

An operation process of a television capable of recognizing ambient sound for use of a wireless headphone according to another embodiment of the present invention having such a configuration will be described in more detail.

In the above-described embodiment of FIG. 2, the voice signal to be listened to by the wireless headphones is not recognized through the speaker 70. The voice signal to be listened to by the wireless headphones is illustrated in another embodiment of FIG. 3. In order to recognize the surrounding sound in the state that the same voice signal is output through the speaker 70, the sound picked up by the surrounding sound is compared with the recognized voice in the voice signal output from the television itself to the speaker 70. Thus, the sound signal output from the speaker 70 and the surrounding sound of the actual television are distinguished and the actual surrounding sound is displayed as text subtitles.

That is, the voice recognition unit 110 recognizes a voice that can be expressed as a character in the picked-up voice signal of the surroundings applied through the microphone 90 and the filter unit 100, and converts the recognized voice data into the microcomputer 20. It is applied sequentially.

In addition, the second voice recognition unit 120 recognizes a voice that can be represented by a character in the audio signal output through the speaker 70 and sequentially applies the recognized voice data to the microcomputer 20.

In this case, the microcomputer 20 compares the voice data applied from the voice recognition unit 110 and the second voice recognition unit 120. In this case, when the two voice data are the same, the voice recognized by the voice recognition unit 110 is compared. Since the voice is output through the speaker 70, it is determined that the external sound is not an external peripheral sound so that the OSD text processing is not performed.

On the contrary, if the voice recognized by the voice recognizer 110 is not the same as the voice recognized by the second voice recognizer 120, the voice is determined to be the actual ambient sound and the microcomputer 20 controls the OSD unit 50 to recognize the voice. The audio is processed as text subtitles and output to the monitor 60.

Then, the viewer can recognize the voice that can be represented by the characters in the actual surrounding sound as the displayed subtitle.

In addition, the phone ringer and the doorbell sound can also be confirmed by the text subtitle on the monitor (60).

Meanwhile, in the preferred embodiment of the present invention, a television using wireless headphones has been described, but it is also applicable to televisions equipped with voice headphones instead of wireless headphones, and those skilled in the art can depart from the technical spirit of the present invention. It will be appreciated that various other changes and modifications can be made without departing from the scope of the invention.

As described above, according to the present invention, by picking up an external sound through a microphone and recognizing the voice from the picked-up voice signal and displaying it on the monitor as text subtitles, a viewer with wired or wireless headphones displays the surrounding voice. There is an effect that can be recognized through subtitles.

Claims (3)

The headphone output means for transmitting the received audio signal by wire or wirelessly, the OSD unit 50 for displaying and displaying OSD characters, the headphone output means and the OSD unit 50, and controls the overall operation of the television. In the television provided with the microcomputer 20, A microphone 90 for picking up an external sound and converting the external sound into an electrical signal; A filter unit (100) for extracting a home band from the signal from the microphone (90); A voice recognition unit 100 for converting an audio signal of the filter unit 100 into a digital signal and performing voice recognition processing; And the micom 20 that controls the OSD unit 50 to display the text recognized by the voice recognition unit 100 in the headphone mode for driving the headphone output unit by text caption. TV with ambient sound recognition for use. The microcomputer 20 of claim 1, further comprising a second voice recognition unit 120 that converts an audio signal applied to a television speaker into a digital signal and processes a voice recognition. Compared with the voice recognized by the voice recognition unit 110 and the voice recognized by the voice recognition unit 110, only the voice not recognized by the second voice recognition unit 120 of the OSD unit 50 TV display capable of recognizing the surrounding sound for use of the headphone, characterized in that the display is controlled by the text subtitle. According to claim 1 or 2, The voice recognition unit 110 or the second voice recognition unit 120 is provided with a predetermined number of various ring tones and doorbell sounds are patterned, the ring and the doorbell sounds are recognized When the output of these recognized voices to the microcomputer 20, the microcomputer 20 uses a headphone, characterized in that the phone ringing or ringing the doorbell to control the display by text subtitles by controlling the OSD unit 50 TV with Ambient Sound Recognition.