KR20080109321A - Voice recognition control of mobile device - Google Patents

Voice recognition control of mobile device Download PDF

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Publication number
KR20080109321A
KR20080109321A KR1020070057495A KR20070057495A KR20080109321A KR 20080109321 A KR20080109321 A KR 20080109321A KR 1020070057495 A KR1020070057495 A KR 1020070057495A KR 20070057495 A KR20070057495 A KR 20070057495A KR 20080109321 A KR20080109321 A KR 20080109321A
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KR
South Korea
Prior art keywords
voice recognition
voice
button
mobile terminal
signal
Prior art date
Application number
KR1020070057495A
Other languages
Korean (ko)
Inventor
양태영
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020070057495A priority Critical patent/KR20080109321A/en
Publication of KR20080109321A publication Critical patent/KR20080109321A/en

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/271—Devices whereby a plurality of signals may be stored simultaneously controlled by voice recognition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/74—Details of telephonic subscriber devices with voice recognition means

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)

Abstract

A voice recognition control method of a mobile terminal capable of voice recognition is provided to input voice signal to be recognized, during a time which a user intends to, into the device. The on-state of a button equipped in a mobile apparatus for executing voice recognition is determined(S120). After determination, voice signal is accepted only for a time interval for maintaining the on-state by a voice recognition button. The recognition about the voice is performed(S160).

Description

VOICE RECOGNITION CONTROL OF MOBILE DEVICE}

1 is a view showing an operation example of a mobile terminal according to an embodiment of the present invention;

2 is a block diagram of a mobile terminal according to an embodiment of the present invention;

3 is a flowchart of a voice recognition control method of a mobile terminal according to an embodiment of the present invention;

4 is a flowchart of a voice recognition control method of a mobile terminal according to another embodiment of the present invention;

5 is a flowchart of a voice recognition control method of a mobile terminal according to another embodiment of the present invention;

The present invention relates to a voice recognition control method of a mobile terminal.

Mobile terminals using voice recognition technology have been implemented. The voice recognition technology implemented in the mobile terminal is implemented not only for searching and dialing a phone number in the mobile terminal but also for inputting a message based on menu name recognition or voice / text conversion, selecting songs in audio file playback, and controlling functions. .

In a mobile terminal equipped with such a voice recognition function, the voice recognition operation usually depends on a key command by a user. For example, in the case of a mobile phone, the voice recognition function is driven by pressing a designated button or entering the menu tree. In the former case, there is a method of driving a voice recognition function by briefly pressing a button, and a method of driving a different function by dividing a case of long pressing and a short pressing of a button. For example, a short press of a button activates the voice dialing function, and a long press of the button activates the menu voice recognition function.

When the voice recognition function is activated when the button provided in the mobile phone is pressed or the voice recognition function is operated by using the menu, in any case, the voice recognition function is started by pressing the button, and once the voice recognition function is started, From then on, the recognition of the signal input into the microphone is performed unconditionally. That is, when the voice recognition function is driven, the microphone is operated because the user's voice signal is input, and whether or not the user's voice input is completed is detected by the voice recognition module (voice recognition engine) installed in the mobile phone. If it is determined that the voice input is completed, the algorithm stops the microphone operation and presents the recognized result or performs a device control operation corresponding to the recognition result.

However, since the signal input to the microphone may exist not only the voice signal to be recognized but also other audio signals, the possibility of error in voice recognition increases. For example, the noise around the device may be input into the microphone. If the mobile device is equipped with the audio playback function to play and output the audio, the audio signal output from the device may be input into the microphone. If the mobile device is equipped with a function of receiving a television (TV) broadcast or a radio broadcast and is receiving and outputting a TV broadcast or a radio broadcast, the audio signal output from the mobile device may be input into the microphone.

Therefore, once the user enters the voice recognition state unconditionally attempts to recognize the signal input into the microphone, the possibility of recognition error increases, and when the recognition error occurs, the user has to repeatedly input the voice, which is inconvenient. Will follow.

An object of the present invention is to provide a voice recognition control method of a mobile device so that a mobile terminal can accurately input a voice signal to be recognized only during a user's intended time.

Another object of the present invention is to provide a voice recognition control method of a mobile device to enable a user to easily recognize whether or not a state in which a mobile terminal accepts a voice input to be recognized.

It is still another object of the present invention to block other audio signals that can be controlled by the device so that other audio signals that can be controlled by the device do not interfere with the voice signal to be recognized while the voice input to be recognized by the mobile terminal is received. To provide.

Voice recognition control method of a mobile terminal according to the present invention for achieving the above object comprises the steps of determining the on state of the button provided in the mobile device for speech recognition execution; As a result of the determination, accepting a voice signal only during a time interval in which the voice recognition button is in an on state and performing recognition of the corresponding voice; Characterized in that it comprises a.

In addition, in the voice recognition control method of the mobile terminal according to the present invention, during the time interval in which the voice recognition button is in the on state, whether the voice signal input state for the voice recognition is output through the display device of the device Characterized in that.

In the voice recognition control method of the mobile terminal according to the present invention, the audio signal output from the mobile device is temporarily cut off during the time interval in which the voice recognition button is in an on state.

In the voice recognition control method of the mobile terminal according to the present invention, the blocked audio signal is a broadcast signal of a broadcast receiving apparatus mounted on the mobile terminal or an audio output signal of an audio data reproducing apparatus mounted on the mobile terminal. It is done.

In addition, the voice recognition control method of the mobile terminal according to the present invention comprises the steps of: determining the on state of the button provided in the mobile device for executing voice recognition; When the voice recognition button is turned on, temporarily stopping the audio signal output from the mobile device and indicating that voice recognition is in progress, and operating a microphone for voice input; Accepting a voice signal through the microphone and performing recognition on the corresponding voice only during a time interval in which the voice recognition button is on; Characterized in that it comprises a.

Hereinafter, a voice recognition control method of a mobile terminal according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a view showing an operation example of a mobile terminal according to an embodiment of the present invention. 1 illustrates a case in which a terminal performs a voice recognition function when a predetermined button 10 is pre-assigned. The display device 20 of the terminal is provided with means for expressing whether the microphone is operating for speech recognition, which is represented by a microphone icon 30. Such presentation information may also be replaced with text. For example, it is a method of expressing in text whether speech recognition or speech recognition is finished. If the user does not hold down the button 10 to perform the voice recognition function, the microphone 30 is expressed on the display device 20 using the icon 30. While the user presses the button 10 in order to perform the voice recognition function, the display device 20 expresses that the microphone is operating using the icon 30. The method of expressing whether the microphone is operated may be implemented in various ways, and since the techniques may be widely used in the field of graphic user interface (GUI) technology, detailed technical means thereof will not be described.

As shown in FIG. 1, in the present invention, the microphone operates only while the user presses the voice recognition button 10 to receive a voice signal, and the voice signal input while the voice recognition button 10 is pressed is mounted on the terminal. The voice recognition module (voice recognition engine) to recognize the corresponding voice. In addition, at this time, an appropriate expression means is output to the display apparatus 20 so that the user can easily recognize that the voice recognition function is being performed. Here, the voice is used by using the icon 30 which means that the microphone is operating. Visually tells you that you are aware. In addition, while performing the voice recognition, the mobile terminal controls the audio signal output that can be controlled by the terminal. For example, a terminal equipped with a TV or radio broadcast reception function can block the audio signal output of the broadcast signal. For example, a terminal equipped with a digital audio data reproducing function may block the reproduction or output of an audio signal. As such, by temporarily blocking the controllable audio signal output during the voice recognition, the terminal can prevent a signal other than the voice signal from being input into the microphone and ensure an accurate voice recognition environment.

2 is a block diagram of a mobile terminal according to an embodiment of the present invention. The controller 110 controls the microphone, the display device, and the audio output according to whether the voice recognition button is kept on, the user interface 120 for inputting a device operation and voice recognition command to the controller 110, and the controller. The display unit 130 on which the information according to the control of the display is displayed, the microphone 140 for receiving the user voice signal, and the user voice signal input through the microphone 140 are recognized and the recognition result is controlled. Audio signal from the broadcast signal received from the TV receiver 160 receiving the TV broadcast signal under the control of the voice recognition unit 150 and the control unit 110 and the TV receiver 160 An audio output unit 170 is included.

In the mobile terminal illustrated in FIG. 2, components related to voice and / or video or data communication are not illustrated and described. This replaces the general mobile terminal configuration and function. In FIG. 2, a keypad provided in the mobile terminal may be used as the user interface 120, and the voice recognition button 10 described with reference to FIG. 1 is provided. The display unit 130 may be an image display device such as an LCD. The voice recognition unit 150 is replaced with a previously known voice recognition module (speech recognition engine). The TV receiver 160 may be a mobile digital TV broadcast receiver as one example of an audio signal output function that can be controlled by the mobile terminal. In some cases, it may be a radio broadcast receiver, but here, the TV broadcast reception function is illustrated in the mobile terminal. The audio output unit 170 performs a conventionally known audio processing process such as decoding an audio signal, digital / analog conversion, amplification, filtering, etc., and may use a speaker device as the output device. The controller 110 may use a processor of the mobile terminal or implement a separate control device such as a DSP.

The controller 110 may control the operation of the microphone 140. An example of the method may include a configuration of supplying or cutting off the power of the microphone 140 using an electrical switching circuit, although not shown in the drawings. A method of connecting or disconnecting the voice signal transmission path using an electrical switching circuit on the voice signal path input from the microphone 140 to the voice recognition unit 150 may be used. Alternatively, the voice recognition unit 150 controls the voice recognition unit 150 so that the voice recognition unit 150 operates only while the voice recognition button is pressed to process the voice signal input to the microphone 140. It is also possible to control.

The controller 110 may control the audio output unit 170 to output or block the audio signal. This can be done using, for example, a known audio muting circuit (or an audio muting function). Another example of a technique for controlling audio output includes a method in which the controller 110 stops the operation of the TV receiver 160. Can also be used.

In the mobile terminal according to an embodiment of the present invention, the control of receiving a voice signal input through the microphone only while the voice recognition button is pressed and the control method of temporarily blocking the audio output from the device while the voice recognition button is pressed are described above. Various other implementations may be made in addition to one method, which may be easily adopted by those skilled in the art. Here, a method of controlling the operation of the microphone 140 and directly controlling the audio output unit 170 to temporarily block the audio output has been described.

In order to perform the voice recognition function in the mobile device, the user presses the voice recognition button of the user interface unit 120. In the present invention, the voice signal for voice recognition is accepted only while the voice recognition button is pressed. Therefore, the controller 110 performs the following control while the voice recognition button is pressed (that is, the on state) so that the voice recognition is performed.

First, the microphone 140 is controlled and operated. In addition, the display 130 is controlled to indicate to the user that voice recognition is being performed as described with reference to FIG. 1. Then, the TV receiver 160 is in operation to determine whether the audio signal is being output. If the audio signal is being output, the audio recognition unit 170 is controlled to temporarily block the audio output. While it is losing, it temporarily cuts off the output of other audio signals that may be interfering.

The voice signal of the user input to the microphone 140 is converted into an electrical signal and transmitted to the voice recognition unit 150. At this time, when the input of the voice signal to be recognized by the user is completed, the operation of the voice recognition button is stopped. This operation may be performed by releasing the voice recognition button.

 The voice recognition unit 150 drives a mounted voice recognition algorithm (voice recognition engine) to recognize a user voice input to the microphone 140. The recognition result is transmitted to the controller 110. The controller 110 performs an operation corresponding to the voice recognition result, for example, dialing, voice / text conversion, menu movement, and function selection. Mobile device control based on the recognition result is performed in place of the existing technology.

3 is a flowchart of a voice recognition control method of a mobile terminal according to an embodiment of the present invention. The control unit 110 recognizes whether the user has operated the voice recognition button provided in the interface unit 120 (S110). If the voice recognition button is operated, it is determined whether the voice recognition button is kept on (S120). If the voice recognition button is in the on state, the microphone 140 is controlled and operated (S130), and the user inputs a voice signal (S140). Then, the voice recognition unit 150 is driven to perform voice recognition (S150), and the recognition result is transmitted to the controller 110 to perform a corresponding operation (S160). If the voice recognition button is not pressed, the control unit 110 blocks the operation of the microphone 140.

4 is a flowchart of a voice recognition control method of a mobile terminal according to another embodiment of the present invention. The control unit 110 recognizes whether the user has operated the voice recognition button provided in the interface unit 120 (S110). If the voice recognition button is operated, it is determined whether the voice recognition button is kept on (S120). If the voice recognition button is maintained in the on state, the microphone 140 is controlled and operated, and the display unit 130 indicates that the microphone 140 is in operation (S135). Then, the voice signal input by the user is received (S140). The voice recognition unit 150 is driven to perform voice recognition (S150), and the recognition result is transmitted to the controller 110 to perform a corresponding operation (S160). If the voice recognition button is not pressed, the control unit 110 blocks the operation of the microphone 140 and displays on the display unit 130 that the microphone operation is blocked (S175).

5 is a flowchart of a voice recognition control method of a mobile terminal according to another embodiment of the present invention. The control unit 110 recognizes whether the user has operated the voice recognition button provided in the interface unit 120 (S110). If the voice recognition button is operated, it is determined whether the voice recognition button is kept on (S120). If the voice recognition button is in the on state, the mobile device determines whether there is another audio output. For example, if the TV reception function is in operation, the TV audio output is blocked (S125). Then, the microphone 140 is controlled and operated, and the display unit 130 indicates that the microphone 140 is operating (S135). In response to the operation of the microphone 140, a voice signal input by the user is received (S140). The voice recognition unit 150 is driven to perform voice recognition (S150), and the recognition result is transmitted to the controller 110 to perform a corresponding operation (S160). If the voice recognition button is not pressed, the control unit 110 blocks the operation of the microphone 140 and displays on the display unit 130 that the microphone operation is blocked (S175).

When the voice recognition function is performed in the mobile terminal, the present invention accepts a voice signal for recognition only while pressing a specific button that is promised, thereby relatively eliminating ambient noise or unnecessary audio signal input, thereby providing more accurate voice recognition. Can be provided. In addition, since the user is informed using the display device whether the voice signal is being received for voice recognition, the current operating state of the device can be accurately recognized. In addition, when a voice signal is received for voice recognition, other audio outputs of the mobile device may be temporarily blocked to minimize interference due to unnecessary audio signals.

Claims (5)

Determining an on state of a button provided in the mobile device for executing voice recognition; As a result of the determination, accepting a voice signal only during a time interval in which the voice recognition button is in an on state and performing recognition of the corresponding voice; Voice recognition control method of a mobile terminal comprising a. The voice of the mobile terminal according to claim 1, wherein the voice recognition button outputs whether the voice recognition button is in the voice signal input state for the voice recognition during the time interval in which the voice recognition button is kept on. Perception Control Method. The method of claim 1, wherein the audio signal output from the mobile device is temporarily interrupted during the time interval in which the voice recognition button is in the on state. The method of claim 1, wherein the cut-off audio signal is a broadcast signal of a broadcast receiving apparatus mounted on a mobile terminal or an audio output signal of an audio data reproducing apparatus mounted on a mobile terminal. . Determining an on state of a button provided in the mobile device for executing voice recognition; As a result of the determination, when the voice recognition button is turned on, temporarily interrupting the output of the audio signal output from the mobile device and indicating that voice recognition is in progress, and operating a microphone for voice input; Accepting a voice signal through the microphone and performing recognition on the corresponding voice only during a time interval in which the voice recognition button is on; Voice recognition control method of a mobile terminal comprising a.
KR1020070057495A 2007-06-12 2007-06-12 Voice recognition control of mobile device KR20080109321A (en)

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KR1020070057495A KR20080109321A (en) 2007-06-12 2007-06-12 Voice recognition control of mobile device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101579292B1 (en) 2014-08-29 2015-12-21 서울대학교 산학협력단 Apparatus and method for universal control using speech recognition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101579292B1 (en) 2014-08-29 2015-12-21 서울대학교 산학협력단 Apparatus and method for universal control using speech recognition

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