JP2006025079A - Head set and wireless communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head set and a wireless communication system in which an external device can be controlled surely by voice. <P>SOLUTION: The head set 11 performing wireless communication with a portable telephone 13 for telephone conversation outputs a voice signal by detecting bone conduction voice, recognizes the outputted voice signal, and outputs the recognized voice signal by wireless communication. Feature information of bone conduction voice is extracted from the voice signal outputted by a bone conduction microphone, and then the feature of a person who uttered the bone conduction voice is identified based on the extracted feature information. The wireless communication system 1 comprises such a head set 11 and an external device 21 performing operation control based on a voice signal outputted from the head set 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a headset and a wireless communication system, and to a headset and a wireless communication system using a bone conduction voice microphone.

In recent years, various wireless communication technologies such as Bluetooth (registered trademark) and wireless LAN (Local Aerea Network) have been developed. Since Bluetooth has low power consumption, it is mainly applied to mobile phones and the like. In addition, the wireless LAN has a wide band and is mainly used for PC.
Bluetooth is becoming standard on some European mobile phones and is becoming popular. As a background to this, the use of mobile phones while driving requires the use of hands-free or headsets due to the establishment of laws regulating the use of mobile phones when driving cars. It is possible to use a headset connected with a cable, but in the case of a headset connected with a cable, there are problems such as the cable becoming entangled and not being able to be worn in a short time in the case of dredging. Therefore, convenient wireless headsets are widely used.

A headset having a wireless communication function by Bluetooth can be connected to a mobile phone to perform a voice call, and Bluetooth standardizes a communication protocol called a profile in addition to a voice call. Therefore, various applications for exchanging information other than voice with other devices are possible.
An example thereof is disclosed in Patent Document 1. In the headset disclosed in Patent Document 1, the voice signal detected by the microphone of the headset is recognized by the voice recognition means, and the result is transmitted to an external device by wireless communication. For example, it is possible to control an external device such as an air conditioner by giving a voice instruction from the headset.

A general microphone detects the vibration of the air and converts it into an electrical signal by utilizing the fact that the vocal cord vibration caused by the voice is transmitted as air vibration from the mouth and nose. Therefore, there is a high possibility of detecting external noise that has propagated air along with the user's voice, and it is difficult to detect only the user's voice, particularly in situations where the external noise is noisy.
When a general microphone is used in the configuration of Patent Document 1, the speech recognition rate is reduced under noise, making it difficult to control external devices. One solution is to send information detected by a microphone to the CPU inside the headset and perform arithmetic processing by the CPU to remove noise components and increase the speech recognition rate.
However, in general, a CPU mounted on a headset is relatively inefficient due to space and cost constraints and cannot perform advanced arithmetic processing. Therefore, as long as a general microphone is used in the headset, a high recognition rate cannot be realized, and there is a problem that the performance is not sufficient for controlling an external device.
JP 2003-202888 A

As described above, the conventional headset has a problem that the external device cannot be reliably controlled by voice because a high voice recognition rate cannot be realized in the case of a general microphone. .
The present invention has been made to solve such problems, and an object of the present invention is to provide a headset and a wireless communication system capable of reliably controlling an external device by voice.

The headset according to the present invention detects a bone conduction speech and outputs a speech signal, and recognizes the speech signal output by the bone conduction microphone, and a speech recognition means (for example, generating information) , Voice recognition means 112 in the embodiment of the invention, and transmission means for converting the information generated by the voice recognition means into a wireless communication signal and transmitting it to an external device (for example, the wireless communication means in the embodiment of the invention) 113).
In such a configuration, since the headset performs speech recognition using an undegraded speech signal before transmission, a high speech recognition rate can be realized. Furthermore, since the bone conduction microphone is used, the voice recognition rate can be further improved. Therefore, the external device can be reliably controlled by voice.
Preferably, the voice recognition means converts recognition information obtained by recognition of the voice signal into command information for operating the external device, and the transmission means is converted by the voice recognition means. The command information is converted into the wireless communication signal and transmitted to the external device.

  Further, the headset is a headset that wirelessly communicates with a portable terminal to make a call, and the voice recognition means starts a process of recognizing the voice signal in response to the end of the call. Thereby, the headset can communicate wirelessly with an external device simply.

  On the other hand, the headset according to the present invention detects bone conduction sound and outputs a sound signal, and extracts the feature information of the bone conduction sound from the sound signal output by the bone conduction microphone. Extraction means (for example, personal authentication means 310 in the embodiment of the invention).

Furthermore, the headset according to the present invention comprises personal authentication means for executing personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information extracted by the feature extraction means. is there.
In such a configuration, since the headset uses an undegraded audio signal before transmission, a high audio recognition rate can be realized. Furthermore, since the bone conduction microphone is used, the voice recognition rate can be further improved. Therefore, safer personal authentication can be performed.

  Furthermore, the headset according to the present invention can include a transmission unit that transmits authentication result information indicating a result of the personal authentication executed by the personal authentication unit to an external device. In this case, the personal authentication means can control the transmission means based on the authentication result information.

  In addition, the headset according to the present invention can include transmission means for transmitting the feature information extracted by the feature extraction means to an external device.

The wireless communication system according to the present invention is a wireless communication system including a headset and an external device that wirelessly communicates with the headset, wherein the headset detects bone conduction sound and outputs a sound signal. Recognizing a bone conduction microphone and a voice signal output by the bone conduction microphone, voice recognition means for generating command information for operating the external device (for example, voice recognition means 112 in the embodiment of the invention) ) And transmission means for transmitting the command information generated by the voice recognition means to the external device by wireless communication (for example, the wireless communication means 113 in the embodiment of the invention), the external device Receiving means for receiving command information transmitted by the transmitting means (for example, wireless communication means 12 in the embodiment of the invention) ) And, in which a control means for executing the operation control based on the received command information (e.g., control in the embodiment of the invention means 121) by the receiving means.
In such a configuration, since the headset performs speech recognition using an undegraded speech signal before transmission, a high speech recognition rate can be realized. Furthermore, since the bone conduction microphone is used, the voice recognition rate can be further improved. Therefore, the external device can be reliably controlled by voice.

On the other hand, the wireless communication system according to the present invention is a wireless communication system including a headset and an external device that wirelessly communicates with the headset, wherein the headset detects bone conduction sound and outputs a sound signal. A bone conduction microphone to be output; and feature extraction means for extracting and outputting the feature information of the bone conduction voice from the voice signal output by the bone conduction microphone (for example, the personal authentication means 310 in the embodiment of the invention); The personal authentication means for executing the personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information extracted by the feature extraction means (for example, the personal authentication means 310 in the embodiment of the invention) And transmitting means for transmitting authentication result information indicating the result of personal authentication executed by the personal authentication means to the external device (for example, implementation of the invention) Wireless communication means 112), and the external device receives the authentication result information transmitted by the transmission means (for example, the wireless communication means 122 in the embodiment of the invention) and the reception Control means (for example, control means 121 in the embodiment of the invention) that performs operation control based on the authentication result information received by the means.
In such a configuration, since the headset uses an undegraded audio signal before transmission, a high audio recognition rate can be realized. Furthermore, since the bone conduction microphone is used, the voice recognition rate can be further improved. Therefore, safer personal authentication can be performed.

  The wireless communication system according to the present invention is a wireless communication system including a headset and an external device that wirelessly communicates with the headset, wherein the headset detects bone conduction sound and outputs a sound signal. Recognizing an output bone conduction microphone and a voice signal output by the bone conduction microphone, voice recognition means for generating command information for operating the external device (for example, voice recognition in an embodiment of the invention) Means 112), feature extraction means for extracting and outputting the feature information of the bone conduction voice from the voice signal outputted by the bone conduction microphone (for example, the personal authentication means 310 in the embodiment of the invention), An individual for performing personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information extracted by the feature extraction means The command information generated by the voice recognition unit according to the authentication unit (for example, the personal authentication unit 310 in the embodiment of the invention) and the authentication result information indicating the result of the personal authentication executed by the personal authentication unit. A transmission unit (for example, the wireless communication unit 113 in the embodiment of the invention) that transmits to the external device, and the external device receives the command information transmitted by the transmission unit (for example, the invention). Wireless communication means 113) in the embodiment, and control means (for example, control means 121 in the embodiment of the invention) for performing operation control based on the command information received by the receiving means. it can.

  Still further, the wireless communication system according to the present invention is a wireless communication system including a headset and an external device that wirelessly communicates with the headset, wherein the headset detects a bone conduction sound, And a feature extraction means for extracting the feature information of the bone conduction voice from the voice signal outputted by the bone conduction microphone (for example, the personal authentication means 310 in the embodiment of the invention) And transmission means for transmitting the feature information extracted by the feature extraction means to the external device (for example, the wireless communication means 113 in the embodiment of the invention), and the external device transmits by the transmission means Receiving means (for example, wireless communication means 122 in the embodiment of the invention) for receiving the received feature information and received by the receiving means Based on the collection information, based on the authentication result information indicating the result of the personal authentication executed by the personal authentication means for identifying the characteristics of the individual who uttered the bone conduction voice, and the personal authentication performed by the personal authentication means, Control means (for example, control means 121 in the embodiment of the invention) that performs operation control can be included.

  ADVANTAGE OF THE INVENTION According to this invention, the headset and radio | wireless communications system which can control an external apparatus reliably with an audio | voice can be provided.

In the wireless communication system according to the present invention, a headset that performs wireless communication with an external device controls the operation of the external device using a voice recognition technology. Furthermore, in the wireless communication system according to the present invention, only a specific individual controls the operation of the external device using the personal authentication technology.
Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Moreover, although the form demonstrated below shows an example which implemented this invention to the headset, this invention is applicable not only to this but a various thing.

Embodiment 1 of the Invention
First, the overall configuration of the wireless communication system according to the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram showing a configuration example of this wireless communication system.
As shown in FIG. 1, the wireless communication system 1 includes a headset 11, an external device 12, and a mobile phone 13.
The headset 11 makes a voice call by wireless communication with the mobile phone 13 and functions as a remote controller (hereinafter abbreviated as a remote controller) of the external device 12, similarly to a general headset. As will be described later, the headset 11 has a bone conduction microphone that detects bone conduction sound that transmits bones such as a skull, not a microphone that detects sound waves in the air.

The external device 12 has a built-in wireless communication function for performing wireless communication with the headset 2. As shown in FIG. 1, the external device 12 can be a personal computer as an example, but is not limited thereto, and can be a home appliance or the like in the home. A wireless communication terminal such as a mobile phone can be used. In FIG. 1, the external device 12 is physically integrated, but it may be physically configured to have two or more.
The mobile phone 13 is an example of a wireless communication terminal, and is not limited thereto, and may be a mobile terminal having a voice transmission / reception function.

In such a wireless communication system 1, the headset 11 is connected to the external device 12 by wireless communication, and remotely controls the external device 12 by wireless communication. In FIG. 1, the headset 11 is connected to the external device 12 at a ratio of 1: 1, but wireless communication is performed in a state where 1: n, that is, there are a plurality of other wireless communication devices in addition to the external device 12. May be.
The method of wireless communication between the headset 11 and the external device 12 is not particularly limited as long as it is wireless communication, but a typical wireless communication method is Bluetooth. Bluetooth is a typical short-range wireless communication system. For example, the headset 11, the external device 12, and the mobile phone 13 that are equipped with the Bluetooth standard wireless communication means use a weak radio wave of 2.4 GHz band. It connects with a wireless communication link and transmits and receives audio signals and the like by wireless communication.

Next, the wireless communication system 1 according to the present invention will be described in detail with reference to FIG. FIG. 2 is a block diagram showing an internal configuration of the wireless communication system 1.
As shown in FIG. 2, the headset 11 includes a bone conduction microphone 111, a voice recognition unit 112, a wireless communication unit 113, a speaker 114, a battery 115, and an antenna 116.
The bone conduction microphone 111 is a voice detection unit that detects a bone conduction sound transmitted by vocal fold vibration caused by utterance and outputs a voice signal.
The voice recognition unit 112 is connected to the bone conduction microphone 111 and has a function of recognizing a voice signal detected by the bone conduction microphone 111. The voice recognition unit 112 holds a user's voice print registered in advance, and holds an address of the external device 12 and a command for executing operation control of the external device 21.

The wireless communication unit 113 includes a modulation / demodulation circuit, a Bluetooth module, and the like, and has a function of performing wireless communication with the external device 12. The wireless communication unit 113 is connected to the voice recognition unit 112 and outputs a voice signal recognized by the voice recognition unit 112 when the operation of the external device 12 is controlled. The wireless communication means 113 is connected to the bone conduction microphone 111 and outputs the sound detected by the bone conduction microphone 111 during a normal call.
The speaker 114 is an audio output unit that outputs an audio signal received from the external device 12 by the wireless communication unit 113. The speaker 114 may be a bone conduction speaker that transmits an audio signal to the auditory nerve by bone conduction.
The battery 115 is a drive source for driving the bone conduction microphone 111, the voice recognition unit 112, the wireless communication unit 113, and the speaker 114.
The antenna 116 is connected to the wireless communication unit 113 and transmits voice information and the like recognized by the voice recognition unit 112 to the outside as radio waves and receives radio waves from the outside.

As shown in FIG. 2, the external device 12 includes a control unit 121, a wireless communication unit 122, a storage unit 123, and an antenna 124.
The control unit 121 includes a CPU, an MPU, and the like, and has a function of executing various control processes such as wireless communication with the headset 11.
The wireless communication unit 122 includes a modulation / demodulation circuit, a Bluetooth module, and the like, and has a function of performing wireless communication with the headset 11.
The storage unit 123 is configured by a memory such as a RAM or a ROM, and stores an application for executing the operation control of the external device 12 based on the address and command of the headset 11.
The antenna 124 is connected to the wireless communication unit 122 and receives audio information and the like from the headset 11 as a radio wave from the outside.

Next, the process of the radio | wireless communications system 1 which concerns on this invention is demonstrated using FIG. FIG. 3 is a flowchart showing an example of the speech recognition process of the headset 11 according to the present invention. It is assumed that the distance between the headset 11 and the external device 12 is within a range of distance that can sufficiently perform wireless communication.
As shown in FIG. 3, the user registers the address and command of the external device 12 in the voice recognition unit 112 of the headset 11 (S101). At the same time, the user registers his / her voice in the voice recognition unit 112 (S102). In addition, the user registers the address of the headset 11 in the external device 12.
For example, in the voice recognition unit 112, a command “turn on power” of the external device 12 is registered. In this case, “address: 1234” for specifying the external device 12 and “command: 567” indicating operation control of “turn on power” are registered.

When the headset 11 is in a standby state (S103), a call is made to the mobile phone 13 (S104). In this case, when the user presses the call button of the headset 11 (S105), the headset 11 enters a call state (S106).
The bone conduction microphone 111 of the headset 11 detects the voice uttered by the user and transmits this bone conduction voice to the mobile phone 13 as an audio signal. This audio signal is transmitted as a radio wave from the mobile phone 13, and the user makes a call via the headset 11. The radio wave received by the mobile phone 13 is transmitted to the headset 11 and output from the speaker 114 of the headset 11.

  When the call ends (S107), the user presses the call button (S108). As a result, the headset 11 again enters the standby state (S103), and the voice recognition unit 112 starts a voice recognition process for recognizing the user's voice. In this standby state, the user utters a predetermined command stored in the voice recognition means 112 of the headset 11 (S109). Specifically, the bone conduction microphone 111 detects a command as a bone conduction voice and inputs voice print information of this command to the voice recognition means 112. The voice recognition unit 112 determines whether or not the recognized voiceprint information matches the voiceprint information of the command stored in advance (S110).

If it is determined that the voice recognition means 112 match (S111), the wireless communication means 113 establishes a communication connection with the external device 12 (S112). In addition, in this case, the voice recognition unit 112 inputs the voice signal uttered by the user to the wireless communication unit 113. The wireless communication unit 113 transmits a command together with the address of the connected external device 12 so that the headset 11 performs processing corresponding to this command (S113).
Thereafter, the external device 12 receives the address and command from the wireless communication unit 113 in the wireless communication unit 122. When the wireless communication unit 122 inputs the received address and command to the control unit 121, the control unit 121 reads an application for controlling the operation of the external device 12 from the storage unit 123. The control means 121 executes power supply input control according to the received command (S116).
In the above example, the voice recognition unit 112 reads “address: 1234” and “command: 567” and sends them to the external device 12 in the connected state. The external device 12 with “address: 1234” is designated by the headset 11 and receives “command: 567” uttered by the user. The external device 12 reads and executes “command: 567” and turns on the power.

As described above, the headset 11 according to the present invention functions not only as a function of making a call using the mobile phone 13 but also as a remote controller for controlling the operation of the external device 12. Therefore, a convenient headset 11 having versatility can be realized.
In the headset 11 according to the present invention, the sound detected by the bone conduction microphone 111 is recognized in the headset 11 before being transmitted to the external device 12. Therefore, it is possible to prevent the voice signal that has been voice-recognized from being deteriorated by communication with the external device 12. Therefore, the headset 11 according to the present invention can improve the accuracy of speech recognition and can recognize speech with a high recognition rate. As a result, the headset 11 can reliably control the external device 12.
Furthermore, the headset 11 according to the present invention uses a bone conduction microphone 111 as a sound detection means. The bone conduction microphone 111 is less influenced by ambient noise, unlike a microphone that detects sound by air conduction. Therefore, the recognition rate can be further increased by using the bone conduction microphone 11, and the headset 11 can more reliably control the external device 12.

  A filtering unit that allows a predetermined frequency to pass may be provided between the bone conduction microphone 111 and the voice recognition unit 112. As a result, voiceprint information necessary for the recognition process can be extracted, so that the recognition rate of the headset 11 can be further improved. Further, a voice synthesizing unit that synthesizes a voice signal may be provided between the speaker 114 and the wireless communication unit 113. This makes it possible to output clearer sound.

Embodiment 2 of the Invention
In the second embodiment of the invention, a headset that performs personal authentication from a user's voiceprint will be described. Preferably, the headset in the present embodiment is used when authenticating whether or not a specific user has authority to operate the external device 12.
First, the internal configuration of the headset according to the present embodiment will be described with reference to FIG. FIG. 4 is a block diagram showing an example of the internal configuration of the headset according to the present embodiment. In FIG. 4, the same reference numerals are given to the same functional blocks as those of the headset 11 in the first embodiment of the present invention, and the description thereof is omitted here.

The headset 31 in this embodiment includes a personal authentication unit 310 in addition to the bone conduction microphone 111, the voice recognition unit 112, the wireless communication unit 113, the speaker 114, the battery 115, and the antenna 116.
The personal authentication means 310 has a function of performing voiceprint analysis based on the audio signal detected by the bone conduction microphone 111 and specifying an individual. The personal authentication unit 310 is connected to the wireless communication unit 113 and, as a result of authentication, determines that the person is already registered, and performs wireless communication with the external device 12 from the wireless communication unit 113. Also, if the personal authentication unit 310 determines that the authentication result is different from all registered persons, the wireless communication unit 113 does not operate and does not perform wireless communication with the external device 12.

Next, personal authentication processing performed by the wireless communication system 1 according to the present invention will be described with reference to FIG. FIG. 5 is a flowchart showing an example of the personal authentication process of the wireless communication system 1. Note that the process S121 in FIG. 5 is the voice recognition process shown in the voice recognition processes S101 to S112 shown in FIG. 3, and is not shown in FIG. 3, and the description of these processes is omitted.
As shown in FIG. 5, the headset 11 performs the speech recognition process shown in FIG. 3 (S121), and transmits an address for identifying itself from the wireless communication means 113 to the external device 12 (see FIG. 5). S122). When the wireless communication unit 122 of the external device 12 receives the address (S123), the control unit 121 determines whether the headset 11 is a registered headset from the received address (S124).

When the headset 11 has been registered (S125), the external device 12 transmits a user authentication confirmation request from the wireless communication unit 122 to the headset 11 (S126). When receiving the confirmation request from the external device 12 (S127), the wireless communication unit 113 of the headset 11 inputs the confirmation request to the personal authentication unit 310.
In response to the input confirmation request, the personal authentication unit 310 extracts feature information such as time, frequency, and intensity from the voiceprint information uttered by the user (S128). The personal authentication unit 310 compares the extracted feature information with previously registered feature information (S129), and identifies whether or not the user who uses the headphones 11 is the person himself / herself. The personal authentication unit 310 inputs the authentication result to the wireless communication unit 113 when the feature information matches (S130). The wireless communication unit 113 transmits the input authentication result to the external device 12 (S131). At this time, the wireless communication unit 113 transmits the command read in the voice recognition process S121 together with the authentication information.

The external device 12 receives the authentication information and the command in the wireless communication unit 122 (S132), and inputs it to the control unit 121. The control means 121 determines that the headset 11 is being used by the registered person from the received authentication information, and executes power input control according to the command (S133).
In addition, when the feature information does not match (S130), the personal authentication unit 310 deletes information relating to the headset 11 such as the user's voice registered in advance (S134). Thereby, it is possible to prevent the headset 11 from being illegally used by a user who has not been registered.

  As described above, when the headset 31 according to the present invention is used, since the bone conduction microphone 111 does not detect external noise, voiceprint analysis or the like can be performed more accurately from the detected audio signal. Therefore, reliable personal authentication using the analyzed voice signal is possible. Accordingly, an input device that is easy to operate and safe can be provided. In addition, since the operation of the external device 12 is not controlled unless a command is input using the registered headset 31 by the registered person, a safe input device that cannot be operated by another person can be realized.

In the headset 31 according to the present invention, when the personal authentication unit 310 fails the personal authentication, the information of the headset 31 held by the personal authentication unit 310 is deleted, but the present invention is not limited to this. As an example, the authentication result of personal authentication such as an authentication error may be output from the speaker 114 to the personal authentication unit 310 to notify the user of the authentication result. In this case, the personal authentication unit 310 is connected to the speaker 114 and inputs the authentication result to the speaker 114. The speaker 114 outputs the input authentication result as a voice.
In this way, when the personal authentication unit 310 functions as a notification unit, the user can easily know the authentication result. In particular, when the user authentication fails, the user can immediately know the authentication error, and the convenience of the headset 31 is improved. In addition, this notification function and the function for deleting the above information may be used in combination, or display means such as a small liquid crystal display device may be provided as notification means separate from the personal authentication means 310. Further, the personal authentication unit 310 may transmit the authentication result from the wireless communication unit 112 to the external device 12. In this case, since the external device 12 can detect the authentication result, the security of the external device 12 can be improved, and unauthorized access to the external device 12 can be more reliably prevented. Become.

In this embodiment, the headset 31 performs personal authentication, but this personal authentication can also be performed in cooperation with the external device 12. Specifically, the headset 31 extracts feature information indicating the user features necessary for personal authentication, and transmits the feature information to the external device 12. The external device 12 performs personal authentication based on the received feature information.
That is, the headset 31 may perform feature information extraction processing, and the external device 12 may perform subsequent authentication processing. Further, when connected to a server via a network like a client computer, this authentication process may be performed in the server.
As described above, when the headset 31 performs only feature information extraction processing and the external device 12 performs personal authentication using the feature information, the configuration of the headset 31 can be further simplified. Thereby, the manufacturing cost of the headset 31 can be reduced.

Embodiment 3 of the Invention
In Embodiment 3 of the invention, a case where Embodiment 1 of the invention is applied to a home appliance will be described.
FIG. 6 shows another example of the wireless communication system 1 in the present embodiment. As shown in FIG. 6, for example, the external device 12 can be a fluorescent lamp 41, an air conditioner 42 (hereinafter abbreviated as an air conditioner 42), and a television 43. The headset 11 has a function as a remote controller for controlling these home electric appliances, in addition to making a voice call by connecting to the mobile phone 13.

  In the case of the fluorescent lamp 41, an address of the fluorescent lamp 41 and an operation control command “turn on light” are registered in the headset 11. The headset 11 reads and executes the address of the fluorescent lamp 41 and a command for “lighting”. Specifically, the headset 11 is connected to the fluorescent lamp 41 at the designated address, and sends a command “turn on light” to the fluorescent lamp 41. The fluorescent lamp 41 that has received this command executes control to turn on the light as a result of receiving the command.

  In the case of the air conditioner 42, an address of the air conditioner 42 and a command for operation control “reducing temperature” are registered in the headset 11. The headset 11 transmits these addresses and commands to the air conditioner 42. The air conditioner 42 is designated by an address and executes an operation control for “lowering the temperature” by a command.

  In the case of the television 43, an address of the television 43 and a command for operation control “set channel to 78 channels” are registered in the headset 11. The headset 11 designates the television 43 by the address, executes the operation control of the television 43 by the command, and “sets the channel to 78 channels” of the television 43.

  As described above, the headset 11 according to the present embodiment designates the external device 12 whose operation is controlled by the address from among a plurality. The headset 11 can control the operation of the designated external device 12 by a command related to each external device 12. Accordingly, a plurality of external devices 12 can be easily controlled using one headset 11 that functions as a remote controller.

Embodiment 4 of the Invention
In Embodiment 4 of the invention, a case will be described in which Embodiment 2 of the invention is applied to a household electrical appliance that requires personal authentication.
FIG. 7 shows another example of the wireless communication system 1 in the present embodiment. As shown in FIG. 7, for example, the external device 12 can be a safe 44. The headset 31 has a function as a remote control for opening and closing the safe 44 in addition to making a voice call by connecting to the mobile phone.

  In the headset 31, an address of the safe 44 and a command for operation control “open” are registered. When the headset 31 is in a standby state, the user says “Open the safe”. Then, the headset 31 recognizes the audio signal and determines whether the recognition result matches the command stored in the headset 31. If the commands match, the headset 31 reads “address: abcd” of the safe and “command: ef0” for operation control in order to execute processing corresponding to the commands.

  The headset 31 is connected to the safe 41 of “address: abcd” and tries to execute “command: ef0”. At this time, the safe 44 determines from the address of the connected headset 31 whether the headset 31 has been registered. When the safe 44 determines that the headset 31 has been registered, the safe 44 requests the headset 31 to confirm the identity.

  In response to a confirmation request from the safe 44, the headset 31 extracts feature information such as time, frequency, intensity, etc. from voiceprint information uttered by the user. The headset 31 determines whether or not the feature information matches the stored feature information of the registered user. The headset 31 transmits the determination result to the safe 44 when the feature information matches. The safe 44 is unlocked because the user voice feature information matches based on the determination result. If the feature information does not match, the headset 31 deletes the registered information, assuming that the headset 31 may have been stolen by someone other than the registered person.

  In this way, the safe 44 is not unlocked unless a command is input from the headset 31 in which the registered person is registered. Since the safe 44 has no physical unlocking means, it can only be unlocked by the headset 31. Even if the headset 31 is stolen, it cannot be unlocked unless the voiceprints including the characteristic information match, so that a safe safe 44 can be configured.

It is a schematic diagram which shows an example of the whole structure of the radio | wireless communications system which concerns on this invention. It is a block diagram which shows an example of an internal structure of the radio | wireless communications system which concerns on this invention. It is a flowchart which shows an example of the process of the radio | wireless communications system which concerns on this invention. It is a block diagram which shows another example of the internal structure of the radio | wireless communications system which concerns on this invention. It is a flowchart which shows another example of the process of the radio | wireless communications system which concerns on this invention. It is a schematic diagram which shows an example of the specific structure of the radio | wireless communications system which concerns on this invention. It is a schematic diagram which shows another example of the specific structure of the radio | wireless communications system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wireless communication system 11 ... Headset, 111 ... Bone conduction microphone, 112 ... Voice recognition means,
113 ... Wireless communication means, 114 ... Speaker, 115 ... Battery, 116 ... Antenna 12 ... External device, 121 ... Control means, 122 ... Wireless communication means, 123 ... Storage means,
124 ... Antenna 31 ... Headset, 310 ... Personal authentication means 41 ... Fluorescent lamp, 42 ... Air conditioner, 43 ... Television, 44 ... Safe

Claims (12)

A bone conduction microphone that detects bone conduction speech and outputs a speech signal;
A voice recognition means for generating information by recognizing a voice signal output by the bone conduction microphone;
A headset comprising transmission means for converting information generated by the voice recognition means into a wireless communication signal and transmitting the signal to an external device. The voice recognition means converts recognition information obtained by recognition of the voice signal into command information for operating the external device,
The headset according to claim 1, wherein the transmission unit converts the command information converted by the voice recognition unit into the wireless communication signal and transmits the signal to the external device. The headset is a headset that wirelessly communicates with a mobile terminal to make a call,
The headset according to claim 1, wherein the voice recognition unit starts a process of recognizing the voice signal in response to the end of the call. A bone conduction microphone that detects bone conduction speech and outputs a speech signal;
A headset comprising: feature extraction means for extracting feature information of the bone conduction speech from the speech signal output by the bone conduction microphone.   5. The personal authentication means for executing personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information extracted by the feature extraction means. headset.   6. The headset according to claim 5, further comprising transmission means for transmitting authentication result information indicating a result of personal authentication executed by the personal authentication means to an external device.   The headset according to claim 6, wherein the personal authentication unit controls the transmission unit based on the authentication result information.   The headset according to claim 4, further comprising a transmission unit that transmits the feature information extracted by the feature extraction unit to an external device. A wireless communication system comprising a headset and an external device that wirelessly communicates with the headset,
The headset detects a bone conduction voice and outputs a voice signal; and a bone conduction microphone;
Voice recognition means for generating command information for operating the external device by recognizing the voice signal output by the bone conduction microphone;
Transmission means for transmitting the command information generated by the voice recognition means to the external device by wireless communication,
The external device includes a receiving unit that receives command information transmitted by the transmitting unit;
A wireless communication system comprising: control means for performing operation control based on command information received by the receiving means. A wireless communication system comprising a headset and an external device that wirelessly communicates with the headset,
The headset detects a bone conduction voice and outputs a voice signal; and a bone conduction microphone;
Feature extraction means for extracting and outputting feature information of the bone conduction speech from the speech signal output by the bone conduction microphone;
Personal authentication means for performing personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information extracted by the feature extraction means;
Transmitting means for transmitting authentication result information indicating a result of personal authentication executed by the personal authentication means to the external device;
The external device includes a receiving unit that receives authentication result information transmitted by the transmitting unit;
A wireless communication system having control means for performing operation control based on authentication result information received by the receiving means. A wireless communication system comprising a headset and an external device that wirelessly communicates with the headset,
The headset detects a bone conduction voice and outputs a voice signal; and a bone conduction microphone;
Voice recognition means for generating command information for operating the external device by recognizing the voice signal output by the bone conduction microphone;
Feature extraction means for extracting and outputting feature information of the bone conduction speech from the speech signal output by the bone conduction microphone;
Personal authentication means for performing personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information extracted by the feature extraction means;
Transmission means for transmitting command information generated by the voice recognition means to the external device in response to authentication result information indicating a result of personal authentication executed by the personal authentication means,
The external device includes a receiving unit that receives command information transmitted by the transmitting unit;
A wireless communication system comprising: control means for executing operation control based on command information received by the receiving means. A wireless communication system comprising a headset and an external device that wirelessly communicates with the headset,
The headset detects a bone conduction voice and outputs a voice signal; and a bone conduction microphone;
Feature extraction means for extracting and outputting feature information of the bone conduction speech from the speech signal output by the bone conduction microphone;
Transmission means for transmitting the feature information extracted by the feature extraction means to the external device,
The external device includes receiving means for receiving the feature information transmitted by the transmitting means;
Personal authentication means for performing personal authentication for identifying the characteristics of the individual who uttered the bone conduction speech based on the feature information received by the receiving means;
A wireless communication system comprising control means for performing operation control based on authentication result information indicating a result of personal authentication executed by the personal authentication means.

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