JP3071372U - Hands-free device for wireless telephone - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a hands-free device for a wireless telephone which can be used regardless of a place and enables a smooth call with the other party. SOLUTION: A connection terminal connected to a wireless telephone, a speaker for outputting an audio signal taken from the wireless telephone via the connection terminal, and wireless communication of a user's voice as an audio signal via the connection terminal. A microphone used for transmitting to the telephone, voice extracting means for extracting only the user's voice from the sound taken in from the microphone and transmitting the voice to the wireless telephone, a power supply, the connection terminal, and a speaker , A microphone, a voice extraction means, and a housing containing any or all of a power supply, and a hands-free device for a wireless telephone, wherein an echo canceller and a noise canceller are incorporated as the voice extraction means. It is characterized by using an integrated circuit.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a hands-free device for a wireless telephone, and more particularly, to a hands-free device for a wireless telephone that can be used anywhere.

[0002]

[Prior art]

 2. Description of the Related Art In recent years, wireless telephones such as mobile phones have been rapidly spread, and the spread of wireless telephones has enabled free calls with desired parties regardless of location.

However, on the other hand, while driving a car or the like, there is concern about an accident or the like caused by using the radio telephone. Recently, the use of the radio telephone while driving a car or the like has been restricted. became.

[0004] Accordingly, in response to this, various hands-free devices for wireless telephones have been provided for enabling secure telephone calls even while driving an automobile or the like.

[0005] Here, as is well known, a hands-free device for a wireless telephone includes a connection terminal for connecting to an earphone terminal or the like of the wireless telephone, a speaker and a microphone, and a wireless connection via the connection terminal. By transmitting and receiving signals to and from the telephone, it is possible to talk with the other party without holding the wireless telephone. By using this, even when driving a car or the like, for example, a call can be made from a handle or the like without talking, so that the use of the wireless telephone is not regulated. ing.

[0006]

[Problems to be solved by the invention]

 However, most of the generally available hands-free devices are designed to be used while driving a car or the like, so most of the power is supplied from a cigarette socket of a car or the like.

[0007] On the other hand, the need to use a wireless telephone in a hands-free manner is not limited to driving a car or the like. It is convenient if is possible.

[0008] In this regard, recently, a hands-free device that enables a wireless telephone to be used in a hands-free manner even in a car has begun to be provided, but, for example, a hands-free communication is possible regardless of a place. For this purpose, a power supply must be built into the main unit, and when using hands-free, it is difficult to make a smooth call with the other party unless echo and noise are cut off. Therefore, if all of them are incorporated in the main body, there is a problem that the entire apparatus must be large.

As a result, the conventionally provided hands-free device has a structure in which the size of the device body is enlarged or the device is not provided with a canceller for cutting noise or echo. In fact, it has not been able to fully meet the requirement that it can be used without a call, and that it also enables a smooth call with the other party.

[0010] Therefore, an object of the present invention is to provide a hands-free device for a wireless telephone which can be used regardless of a place and enables a smooth call with a partner.

[0011]

[Means for Solving the Problems]

 The hands-free device for a wireless telephone of the present invention includes a connection terminal for transmitting and receiving signals to and from the wireless telephone, a speaker for outputting a voice signal taken from the wireless telephone via the connection terminal, A microphone used to transmit a user's voice as a voice signal to the wireless telephone via the connection terminal, and only the user's voice is extracted from the sound taken in from the microphone to the wireless telephone. Hands-free for a wireless telephone, comprising: a voice extracting means for transmission; a power supply; and a housing containing any or all of the above-mentioned connection terminals, speakers, microphones, voice extracting means, and power supply. The apparatus is characterized in that an integrated circuit incorporating an echo canceller and a noise canceller is used as the voice extracting means.

The hands-free device for a wireless telephone according to the present invention uses an integrated circuit having a built-in echo canceller and a noise canceller, whereby only the user's voice can be extracted from the sound taken in from the microphone. .

As described above, in the present invention, since the integrated circuit in which the echo canceller and the noise canceller, which have been conventionally separated, are built in the chip is used, the entire device can be reduced in size and the power consumption can be reduced. It is possible to reduce it. Therefore, according to the present invention, the device can be used irrespective of location by making it possible to reduce the size of the device, and it is possible to effectively prevent the call from being interrupted by echo or noise. Became.

[0014]

[Embodiment of the invention]

 In the hands-free device for a wireless telephone of the present invention, a speaker and a microphone are connected to a connection terminal for transmitting and receiving signals to and from the wireless telephone, and the connection terminal is connected to the wireless telephone. In addition, it is possible to talk with the other party without holding the wireless telephone.

Further, the connection terminal further includes an integrated circuit having an echo canceller and a noise canceller for extracting only the user's voice from the sound taken in from the microphone and transmitting the extracted voice to the wireless telephone. This makes it possible to cut off the voice of the other party coming in from the microphone, the surrounding noise, and the like, and reduce the size of the entire device.

Here, the housing may have any shape, but it is preferable that the housing has the shape of a mascot or the shape of a character, thereby eliminating the tastelessness of a simple box.

Further, it is preferable that the housing is provided with a locking portion such as a suction cup or a clip, so that the housing can be mounted on clothes, bags, and the like.

[0018]

【Example】

 An embodiment of a hands-free device for a wireless telephone according to the present invention (hereinafter simply referred to as a "hands-free device") will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a hands-free device 1 of the present embodiment. In the figure, reference numeral 5 denotes an apparatus main body.

A signal line 3 is connected to the device main body 5, and a connection terminal 4 connected to an earphone terminal or the like of a wireless telephone is connected to a distal end of the signal line 3.

In the apparatus main body 5, a speaker 6 used to output the voice of the other party taken in from the wireless telephone via the connection terminal 4 and the signal line 3 is provided. A microphone 7 is provided for transmitting the voice of the user to the other party of the call via the signal line 3.

Further, a voice extracting means 8 is provided in the apparatus main body 5, and the speaker 6 and the microphone 7 are connected to the voice extracting means 8.

As is well known, various noises and the like are generated in the city and the like, and if no treatment is performed, these sounds are transmitted to the other party of the call through the microphone together with the voice of the user. The speakers output noise along with the user's voice. In general, in a hands-free device, since the speaker and the microphone are close to each other, if no allowance is made for this, the other party's voice output from the speaker is output via the microphone. It is sent to the other party. As a result, a situation occurs in which a smooth call cannot be made.

Therefore, in the present embodiment, the speaker 6 and the microphone 7 are provided with the voice extracting means 8 for extracting and transmitting only the voice of the user, and the voice extracting means 8 is connected to the connection terminal 4. This prevents noise and the like and the voice of the other party of the call from being transmitted to the other party of the call via the microphone.

In this embodiment, as the voice extracting means 8, a noise canceller 801 for cutting noise generated around the user and a voice of the other party output from the speaker 6 are transmitted. An echo canceller 802 and a built-in integrated circuit are used to prevent this.

In FIG. 1, reference numeral 9 denotes a power supply for driving the sound extracting means 8, and a battery is used in this embodiment.

As described above, according to the hands-free device 1 of the present embodiment, the noise canceller and the echo canceller, which have caused the size increase in the conventional hands-free device, are not separately provided. The integrated circuit having the noise canceller and the echo canceller is used as the voice extracting means. As a result, noise and echo can be cut, and the entire device can be made smaller.

In the present embodiment, a commercially available LSI is used as the sound extraction means 8, and the operation of the noise canceller 801 and the echo canceller 802 built therein is conventionally provided. Is the same as That is, the noise canceller 801 has a function of extracting a waveform different from human voice from a transmission signal to be transmitted to the wireless telephone and removing the same, and the echo canceller 802 has a function of transmitting the transmission signal to the wireless telephone. It has the function of extracting a signal with the same waveform as the other party's voice from among them and adding an inverted signal to this signal to cut the echo.

Next, FIG. 2 is a diagram showing the entire hands-free device 1 of the present embodiment and a wireless telephone to which the hands-free device 1 is connected. In FIG. 2, reference numeral 2 denotes a housing in which the device main body 5 is built. Body.

In this embodiment, the casing is formed in a mascot shape, the speaker 6 is exposed to one eye of the casing 2 having the mascot shape, and the other eye is formed. The microphone 7 is exposed to the portion. Therefore, in the present embodiment, the speaker 6 and the microphone 7 can prevent a user or the like from feeling uncomfortable.

The shape of the housing may be, for example, the shape of a mascot such as a doll or an animal, or the shape of a character, in addition to the shape shown in the figure.

Although not shown, the housing 2 may be provided with a locking portion such as a suction cup or a clip, so that the hands-free device of the present embodiment can be mounted on a bag or clothes. It is easy to carry around.

When using the hands-free device 1 of this embodiment configured as described above, it is only necessary to connect the connection terminal 4 to an earphone terminal or the like of a wireless telephone as shown in FIG.

When there is an incoming call from the other party in this state, the other party's voice is output from the speaker 6 via the connection terminal 4 and the user's voice is output via the microphone 7 and the wireless telephone. Audio is sent to the other party.

At this time, since the hands-free device of the present embodiment includes the voice extracting means 8, noise and voice of the other party are cut out of the voice signal transmitted to the other party. , Smooth communication is possible.

Further, in this embodiment, since the integrated circuit is used as the voice extracting means 8, the voice extracting means 8 and the power supply used for the voice extracting means 8 can be reduced, thereby reducing the size of the entire apparatus. can do.

[0036] Therefore, according to the hands-free device of the present embodiment, a smooth call can be made not only in a car or the like but also in a desired place and with the other party.

At this time, in the hands-free device of the present embodiment, the housing is formed in the shape of a mascot or a character, and the housing is provided with a locking portion, so that it can be easily carried. In addition, the tastelessness that occurs when the casing is simply made into a box shape can be eliminated.

In the above-described embodiment, the connection terminal 4 and the device main body 5 are connected by the signal line 3. However, the connection terminal 4 and the device main body 5 need not necessarily be connected via a signal. However, the connection terminal 4 may be directly connected to the apparatus main body 5 without using the signal line 3.

In the above-described embodiment, the microphone 7 is provided in the apparatus main body 5, and the entire apparatus main body including the microphone 7 is built in the housing 2, and the connection terminal 4 is connected using the signal line 3. Although the form of being pulled out of the housing has been described, the hands-free device of the present invention does not necessarily need to have such a configuration. For example, the microphone 7 is not built in the housing 2 and the signal line 3 It is also possible to adopt a structure in which a microphone 7 is provided at an arbitrary position or at the connection terminal 4, that is, an arbitrary element among the connection terminal 4, the speaker 6, the microphone 7, the sound extraction means 8 and the power supply 9 is built in the housing 2 Just do it.

[0040]

[Effect of the invention]

 The hands-free device for a wireless telephone according to the present invention is implemented in the above-described embodiment, and has the following effects.

The hands-free device for a radio telephone according to the present invention includes a connection terminal connected to the radio telephone, a speaker for outputting an audio signal taken from the radio telephone via the connection terminal, and a connection terminal. Microphone for transmitting a user's voice as a voice signal to a wireless telephone via a telephone, and voice extraction for extracting only the user's voice from the sound taken in from the microphone and transmitting the voice to the wireless telephone A hands-free device for a radio telephone, comprising: a power supply; a connection terminal; a speaker; a microphone; a voice extraction means; and a housing containing any or all of the components in the power supply. As a means, an integrated circuit incorporating an echo canceller and a noise canceller is used.

As described above, the hands-free device for a wireless telephone according to the present invention uses an integrated circuit having a built-in echo canceller and a noise canceller, whereby only the user's voice can be selected from the sounds taken in from the microphone. Because it is possible to extract noise, it is possible to reduce the size of the entire device and to use less power, so that it can be used regardless of the location, and calls can be made by echo or noise. Can be effectively prevented from being hindered.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a hands-free device of the present invention.

FIG. 2 is a view showing an entire embodiment of the hands-free device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hands-free device 2 housing 3 signal line 4 connection terminal 5 device body 6 speaker 7 microphone 8 sound extraction means 801 noise canceller 802 echo canceller 9 battery

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI H04M 1/02 G10L 9/00 F H04B 7/26 V 1/03 Q 1/60 109G

Claims (4)

[Utility model registration claims] A connection terminal connected to a wireless telephone;
And a speaker (6) for outputting an audio signal taken from the wireless telephone via the connection terminal (4); and transmitting a user's voice as an audio signal to the wireless telephone via the connection terminal (4). (7), a voice extracting means (8) for extracting only the voice of the user from the sounds taken in from the microphone (7) and transmitting the voice to the wireless telephone, and a power supply ( 9) and a housing (2) containing any or all of the above connection terminals (4), speakers (6), microphones (7), sound extraction means (8), and power supply (9); A hands-free device for a wireless telephone, comprising: an integrated circuit including an echo canceller (802) and a noise canceller (801) as the voice extracting means (8). Hands-free device for talker. 2. A hands-free device for a wireless telephone according to claim 1, wherein said housing (2) is shaped like a mascot. 3. A hands-free device for a wireless telephone according to claim 1, wherein said housing (2) is shaped like a character. 4. The hands-free device for a wireless telephone according to claim 1, wherein a locking portion is provided at an arbitrary position of the housing.