JP2003125461A - Hands-free talk system and repeater for hands-free speech system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hands-free talk system using a local radio communication capable of reducing the sense of incongruity when cut off or the like of a counterparty's voice when the local radio communication falls in a service interruption state. SOLUTION: The hands-free talk system comprises a communication device 11 having a communication unit side microphone 111 which accepts the input of a user voice, a communication unit side speaker 112 which outputs the counterparty's voice, and a communication device side local radio communication unit 114 for performing the local radio communication, and a repeater 12 having a repeater side microphone 121 which accepts the input of the user voice, a repeated side local radio communication unit 123 for performing the local radio communication, a communication controller 122a for detecting the local radio communication state, a repeater side microphone switching unit 122 for switching the voice input acceptance of the microphone 121, and a repeater side network communication unit 124 for performing the communication with a counterparty communication unit 14 via a network communication network 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a communication device and a relay device by local wireless communication, and a user can use the communication device to talk with a partner communication device via the relay device. Hands-free calling system. Here, the local wireless communication is, for example, Blue.
A short-range wireless communication system that enables connection between adjacent devices by using wireless of a certain frequency band, as represented by tooth (R). Hereinafter, local wireless communication is used in this sense. And

[0002]

2. Description of the Related Art Conventionally, there is a communication system in which communication devices are wirelessly connected to each other and communication is possible between the communication devices, and a section connected by wireless in the communication system has a change in radio wave state. There is a method of transmitting a proxy message to a partner communication device via a network communication network as a countermeasure in the case of a non-communication state (for example, Japanese Patent Laid-Open No. 11-146460).

FIG. 8 is a block diagram showing the structure of a conventional communication system. Such a communication system
A communication device 1, a base station 2, a network communication network 3,
It is composed of the other communication device 4. Here, the base station 2
Includes a wireless communication unit 21, a central control unit 22, a wired communication unit 23, and a message storage unit 24, and the partner communication device 4 includes a voice input unit 41 and a voice output unit 42.

The conventional communication system thus configured operates as follows. First, the communication device 1 performs wireless communication with the base station 2 via the wireless communication unit 21, and the base station 2 communicates with the partner communication device 4 via the wired communication unit 23 and the network communication network 3. .

Here, in a section where the communication device 1 and the base station 2 are wirelessly connected, when the wireless communication state is the connection state, the base station 2 causes the wireless communication section 21 to
A voice signal is received from the communication device 1, and the received voice signal is transmitted to the partner communication device 4 via the wired communication unit 23 and the network communication network 3. Also, the base station 2
Receives a voice signal from the partner communication device 4 via the wired communication unit 23 through the network communication network 3 and transmits the received voice signal to the communication device 1 via the wireless communication unit 21. In this way, when the wireless communication state in the wirelessly connected section is the connected state, a call between the communication device 1 and the partner communication device 4 is realized.

[0006] On the other hand, when the radio communication state is in a non-communication state due to a change in the radio wave condition or the communication device 1 being out of the radio communication area of the base station 2 in the section connected by radio. Since the base station 2 cannot detect the communication device 1 by the wireless communication unit 21, the base station 2 detects that the wireless communication state with the communication device 1 is in a non-communication state, and performs a corresponding process. That is, when the base station 2 detects that the wireless communication state with the communication device 1 is in the non-communication state, the central control unit 22 causes the message storage unit 24 to store “the radio wave is out of the radio wave range and communication is impossible”. Is generated, and the wired communication unit 23 is generated.
To send the absence message to the wired communication unit 2
3 transmits the absence message to the partner communication device 4 through the network communication network 3.

As described above, in the conventional wireless communication system, when the wirelessly connected section is in a non-communication state, the base station 2 as a relay device is used.
However, a countermeasure is generally taken to send the absence message to the partner communication device 4.

Here, in the hands-free call system for connecting the communication device and the relay device by the local wireless communication, even when the section connected by the local wireless communication is in the non-communication state, the above countermeasures are taken. It is possible to take

[0009]

However, applying the above countermeasures to the disconnected state of the section connected by the local wireless communication in the hands-free communication system is not effective in the section connected by the local wireless communication. , It is not suitable because there are many momentary interruptions. Here, in general, a momentary interruption refers to a power outage for a very short time due to a lightning strike or the like.However, a momentary interruption here means that the communication state of local wireless communication remains for a very short time due to a change in the radio wave condition or the like. It means being out of communication.

That is, in the section connected by the local wireless communication, the communication state often falls from the connected state to the disconnected state for a short time and then becomes the connected state again. Sending an absence message such as "causes misunderstanding to the other party,
Although the relay device and the other party's communication device are in a call-enabled state, there is a risk that the other party may disconnect the call, and as a countermeasure against a momentary disconnection in the section connected by local wireless communication, it is appropriate. I can't say. In particular, unless the other party assumes that the user is using a hands-free call system that connects the communication device and the relay device by local wireless communication, communication interruptions and voice There is a high possibility that the other party may misunderstand because the cause of the interruption is not determined.

On the other hand, unless measures are taken in the event of a momentary interruption in the section connected by the local wireless communication, the momentary interruption causes communication interruptions, voice interruptions, etc. during the call, causing the other party to feel uncomfortable. There is a problem that makes you feel. Similar to the above, there is a problem that the other party may have a greater uncomfortable feeling unless the other party is supposed to use the hands-free call system.

Further, even if the communication state falls into a non-communication state due to a momentary disconnection in the section connected by the local wireless communication, and the connection state is not recovered within a short time, the relay device and the other party communication Since the call with the device is still continued, there is a problem that the charge for the call continues to increase as the call continues.

Therefore, the present invention has been made in view of the above problems, and provides a local wireless communication capable of reducing a sense of discomfort caused by interruption of the voice of the other party when a momentary interruption occurs in the local wireless communication. A first object is to provide a hands-free call system using the same.

Further, if a momentary disconnection occurs in a section connected by local wireless communication, the communication state falls into a non-communication state, and if the connection state is not recovered within a short time, charging for unnecessary calls is suppressed. A second object is to provide a hands-free call system using local wireless communication capable of performing.

[0015]

In order to achieve the above object, the present invention takes the following technical means.
That is, in order to achieve the first object, a hands-free call system using local wireless communication according to the present invention is a hands-free call system including a communication device and a relay device. Includes a first voice input unit that receives voice input from a user, a voice output unit that outputs voice from the other party, and a first wireless communication unit that wirelessly transmits and receives the voice to and from the relay device. The relay device receives second voice input means from a user, second wireless communication means for wirelessly transmitting and receiving the voice to and from the communication device, the first wireless communication means, and the second wireless communication means. A first wireless communication state detecting means for detecting a communication state of wireless communication with the wireless communication means, and the first sound according to a detection result of the first wireless communication state detecting means. The voice input switching means for selecting either the input means or the second voice input means, and the first voice input means selected by the voice input switching means for the communication device of the communication partner via the communication network. Alternatively, it is provided with a network communication means for transmitting the voice received by the second voice input means.

In order to achieve the second object, the present invention is a hands-free call system comprising a communication device and a relay device, wherein the communication device receives voice input from a user. A first voice input means for receiving;
A voice output unit that outputs voice from the other party of the call, and a first wireless communication unit that wirelessly transmits and receives the voice to and from the relay device, and the relay device transmits and receives the voice wirelessly to and from the communication device. Second wireless communication means for performing, first wireless communication status detecting means for detecting a communication status of wireless communication between the first wireless communication means and the second wireless communication means, a communication device and a communication line of a communication partner. Network communication means for transmitting and receiving the voice through the network, and network communication disconnection for terminating the call through the communication line network with the communication device of the communication partner according to the detection result of the first wireless communication state detecting means. And means.

The present invention can also be realized as an invention of a relay device for realizing such a hands-free call system. That is, a relay device that wirelessly receives a voice from a communication device that receives a voice input from a user, the relay device including a voice input unit that receives a voice input from a user, and the communication device and the wireless input device. Wireless communication means for transmitting and receiving voice, wireless communication state detecting means for detecting a communication state of wireless communication with the communication device, and depending on a detection result of the wireless communication state detecting means,
A voice input switching means for selecting one of the voice receiving means and the voice inputting means from the communication device, and the communication device selected by the voice input switching means for the communication device of the communication partner via a communication line network. Network communication means for transmitting the voice received from the voice or the voice received by the voice input means.

Furthermore, the present invention can also be realized as a hands-free call method in which each component in these hands-free call systems is used as a step. That is, a hands-free call method in a system including a communication device and a relay device, wherein the communication device outputs a first voice input step of receiving a voice input from a user and a voice from a communication partner. A second voice input step of receiving a voice input from a user in the relay device, including a voice output step and a first wireless communication step of wirelessly transmitting and receiving the voice to and from the relay device; A second wireless communication step for wirelessly transmitting and receiving the voice; a first wireless communication state detecting step for detecting a communication state of wireless communication between the first wireless communication step and the second wireless communication step; Depending on the detection result of the communication state detecting step, one of the first voice input step and the second voice input step An audio input switching step of selecting or Re,
A network communication step of transmitting the voice received in the first voice input step or the second voice input step selected in the voice input switching step to a communication device of a call partner via a communication network. It is characterized by including.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a functional block diagram showing a configuration of a hands-free call system using local wireless communication and a relay device in this system according to an embodiment of the present invention.

In this hands-free call system, a communication device and a relay device are connected by local wireless communication,
A communication system that realizes a call between one communication device and another communication device located remotely via a relay device, and includes a communication device 11, a relay device 12, a network communication network 13, and a partner communication device 14. Composed of and.

The communication device 11 is a hands-free communication device having a local wireless communication function, and includes a communication device side microphone 111, a communication device side speaker 112, a communication device control unit 113, and a communication device side local wireless communication unit. And 114. Here, the local wireless communication function is Blue.
Another device including a communication interface of a short-range wireless communication system that enables connection between adjacent devices by using wireless of a certain frequency band, as represented by Bluetooth (R), and other device including the communication interface And the function to perform wireless communication. The communication section between the communication apparatus 11 and the relay apparatus 12 in which the local wireless communication connection is established by the local wireless communication function is referred to as a local wireless communication section. Further, the connection establishment of local wireless communication is performed by transmitting and receiving a connection request packet, a connection request reception packet, and a connection confirmation packet between the communication device 11 and the relay device 12. The connection request packet mentioned here is a packet including device identification information and connection request information for requesting connection of local wireless communication, and the connection request reception packet is device identification information and connection request packet received. The connection confirmation packet reception completion information indicating that the connection has been established, and the connection confirmation packet includes the connection establishment confirmation information indicating that the connection establishment of the local wireless communication has been confirmed. Furthermore, the device identification information refers to information, such as a device serial number, by which one device can be identified by another device.

The communication device side microphone 111 is a microphone that receives a voice input from the user and converts the input voice into a voice signal, and sends the voice signal to the communication device control unit 113. The communication device-side speaker 112 is a speaker that outputs the voice of the other party, receives a voice signal transmitted from the other party communication device 14 from the communication device control unit 113, converts the voice signal into voice, and outputs the voice.

The communication device control unit 113 is a CPU or the like for controlling the other units constituting the communication device 11, and controls functions as a hands-free communication device, such as a voice signal transmitting / receiving function and a local wireless communication function. To do. That is,
The communication device control unit 113 performs processing such as a communication instruction to the communication device side local wireless communication unit 114, a voice signal transmission instruction, and a voice output instruction to the communication device side speaker 112. The communication device control unit 113 includes a communication device microphone switching unit 113a, receives a communication state detection signal from the communication device side local wireless communication unit 114, determines the communication state detection signal, and determines the communication device side local wireless communication. Communication unit 114 and communication device microphone switching unit 113a
Then, an operation instruction based on the information of the communication state detection signal is sent to. Here, the communication state detection signal is a signal indicating the communication state of the local wireless communication section between the communication device side local wireless communication unit 114 and the relay device side local wireless communication unit 123.

The communication device microphone switching unit 113a is a processing unit for controlling ON / OFF switching of voice input acceptance in the communication device microphone 111. The communication device microphone switching unit 113a turns on the reception of voice input from the communication device control unit 113 to the communication device microphone 111.
Alternatively, a process of turning off the voice input reception of the communication device side microphone 111 is performed by receiving an instruction to switch to off.

The local wireless communication unit 114 on the communication device side is
It is a communication interface of a short-range wireless communication system such as an antenna that performs local wireless communication with the relay apparatus side local wireless communication unit 123, detects a communication state in a local wireless communication section, and sends a communication state detection signal to the communication apparatus control unit 113. With the function of sending. The communication device side local wireless communication unit 114 detects whether the communication state of the local wireless communication section is the connection state or the non-communication state depending on the presence or absence of the packet reception from the relay device side local wireless communication unit 123, A communication state detection signal is sent to the communication device controller 113.

The relay device 12 is a mobile phone having a local wireless communication function, and includes a relay device side microphone 121,
A relay device control unit 122, a relay device-side local wireless communication unit 123, and a relay device-side network communication unit 124 are provided. The relay device 12 can also be used as one mobile phone.

The repeater-side microphone 121 is a microphone that receives a voice input from a user and converts the input voice into a voice signal. This relay device side microphone 12
When the relay device 12 is used as the relay device 12 in the hands-free call system, the relay device microphone 1 determines whether to accept a voice input from the user according to the communication state of the local wireless communication section. Switching unit 122
When it is switched according to the instruction of b and the voice input from the user is accepted, the input voice is converted into a voice signal and sent to the relay device control unit 122. In addition, the relay device 1
When 2 is used as one mobile phone, it receives a voice input from the user of the mobile phone, converts the input voice into a voice signal, and sends the voice signal to the relay device control unit 122.

The relay device control unit 122 is a CPU or the like for controlling each of the other units constituting the relay device 12, and functions as a mobile phone having a local wireless communication function, for example, an outgoing / incoming call function and a local wireless communication function. Etc.
That is, the relay device control unit 122 instructs the relay device-side network communication unit 124 to make an outgoing call instruction, an incoming call instruction, an audio signal transmission instruction, and the relay device-side local wireless communication unit 12.
The communication instruction to 3 and the instruction to transmit the voice signal are performed. The relay device control unit 122 includes a communication relay device control unit 122a and a relay device microphone switching unit 122b.
, Message generation unit 122c, and message storage unit 1
22d.

The communication relay device control unit 122a is a processing unit for performing communication control on the relay device side local wireless communication unit 123 and the relay device side network communication unit 124, and includes a relay device microphone switching unit 122b and a message generation unit 122c. The processing unit sends an instruction associated with the communication control. Here, the communication control includes determination of a communication state detection signal, an instruction to try to reestablish a local wireless communication section connection, time measurement of the communication state, and the like, and the communication relay device control unit 122a determines the time of the communication state. It is equipped with a timer for measuring. Further, the instruction accompanying the communication control includes an instruction to switch ON / OFF of voice input acceptance in the relay device side microphone 121, an instruction to generate a call end notice message, and the like. Then, the communication relay device control unit 122a determines the communication state detection signal of the relay device side local wireless communication unit 123, and performs processing relating to the communication control and the communication control based on the information of the communication state detection signal. Perform processing related to instructions.

The relay device microphone switching unit 122b is a processing unit for controlling ON / OFF switching of voice input acceptance in the relay device side microphone 121. The relay device microphone switching unit 122b includes a communication relay device control unit 122a.
From the relay device side microphone 121 to turn ON or OFF the voice input reception, and turn ON or OFF the voice input reception of the relay device side microphone 121.
And a process of sending a microphone switching message generation instruction to the message generation unit 122c.

The message generator 122c is a processor for generating a microphone switching message and a call end notice message. Here, the microphone switching message is a character or voice that informs the other party that the microphone that receives voice input from the user has been switched from the communication device side microphone 111 to the relay device side microphone 121. The message is a character or voice that informs the other party in advance that the existing call will be disconnected after a certain period of time. The message generation unit 122c receives a microphone switching message generation instruction from the relay device microphone switching unit 122b, generates a microphone switching message, and receives a call end notice message generation instruction from the communication relay device control unit 122a, and calls end notice. A process of generating a message and sending it to the communication relay device controller 122a is performed.

The message storage section 122d stores a microphone switching message and a call ending notice message, and stores the microphone switching message and the call ending notice message,
The storage device holds the message generation unit 122c in a readable state.

The local wireless communication section 123 on the relay device side is
It is a communication interface of a short-range wireless communication system such as an antenna for performing local wireless communication with the communication device side local wireless communication unit 114, detects a communication state in a local wireless communication section, and detects a communication state in the communication relay device control unit 122a. It has the function of sending signals. The relay apparatus-side local wireless communication unit 123 detects whether the communication state of the local wireless communication section is the connection state or the non-communication state, depending on whether or not the packet is received from the communication apparatus-side local wireless communication unit 114. Then, a communication state detection signal is sent to the communication relay device controller 122a.

The relay device side network communication section 124 is
It comprises an antenna, a communication interface, etc. for wirelessly communicating with a base station and the like, and through the network communication network 13, the partner communication device side network communication section 144.
And communicate. The network communication network 13 is a telephone line or the like, and is a communication line including a base station and a telegraph line regardless of whether it is a wired line or a wireless line.

The partner communication device 14 is a mobile phone connected to the network communication network 13 by wireless communication, a fixed phone connected by wire communication, or the like. The partner communication device side microphone 141 and the partner communication device side speaker 14 are connected.
2, a partner communication device control unit 143, a partner communication device side network communication unit 144, and a partner communication device display unit 145.

The partner communication device side microphone 141 is a microphone that receives voice input from the partner and converts the input voice into a voice signal, and sends the voice signal to the partner communication device control unit 143.

The other party communication device side speaker 142 is a speaker for outputting the user's voice, receives the voice signal transmitted from the communication device 11 from the other party communication device control unit 143, converts it into voice and outputs the voice.

The other-party communication device control unit 143 is a CPU or the like for controlling each of the other units constituting the other-party communication device 14, and functions as a mobile phone or the like, for example, a call originating / receiving function.
Controls audio signal transmission / reception functions. That is, the other-party communication device control unit 143 controls the other-communication device-side network communication unit 144 to make an outgoing call instruction, an incoming call instruction, a voice signal transmission instruction, a voice output instruction to the other-party communication device-side speaker 142, and the other-party communication device. Processing such as instruction to display a microphone switching message and a call end notice message on display unit 145 is performed.

Network communication unit 14 of the other communication device
Reference numeral 4 includes an antenna, a communication interface, etc. for communicating with a base station or the like by wire or wirelessly, and communicates with the relay device side network communication unit 124 via the network communication network 13.

The partner communication device display unit 145 is a display for displaying a telephone number or the like, and displays a microphone switching message or a call end notice message received by the partner communication device control unit 143 via the partner communication device side network communication unit 144. indicate.

Regarding the operation processing of the hands-free communication system and the relay device in this system configured as described above when a momentary interruption occurs in the local wireless communication section,
This will be described with reference to the drawings.

FIG. 2 is a flow chart showing the flow of the entire operation processing in the hands-free call system using the local wireless communication according to the embodiment of the present invention. First,
When a call is started in the hands-free call system using the local wireless communication, the hands-free call system performs a call operation process in a normal time (S
1). Here, the call operation process in normal time is as follows.

That is, the communication device side microphone 111 receives a voice input from the user, converts the user's voice into a voice signal, and sends the voice signal to the communication device control section 113. Then, the communication device control unit 113 sends a transmission instruction of the audio signal to the communication device side local wireless communication unit 114, and based on the instruction, the communication device side local wireless communication unit 114.
Transmits the audio signal to the relay-apparatus-side local wireless communication unit 123.

Next, the local radio communication section 12 on the relay device side
3 transmits the received voice signal to the communication control unit 122a, the communication control unit 122a sends a transmission instruction of the voice signal to the relay device side network communication unit 124, and based on the instruction, the relay device side network. Communication unit 124
Transmits the audio signal to the partner communication device-side network communication unit 144 via the network communication network 13.

Then, the partner communication device side network communication unit 144 sends the received voice signal to the partner communication device control unit 143, and the partner communication device control unit 143,
The voice signal is sent to the speaker 142 on the communication device side, and the speaker 142 on the communication device side converts the voice signal into voice and outputs the voice of the user.

On the other hand, the microphone 141 on the other communication device side is
The voice input from the other party is accepted, the voice of the other party is converted into a voice signal, and the voice signal is sent to the other party communication device control section 143. Then, the partner communication device control unit 143 sends a transmission instruction of the audio signal to the partner communication device side network communication unit 144, and based on the instruction, the partner communication device side network communication unit 144 causes the network communication network 1
To the relay device side network communication unit 124 via
The audio signal is transmitted.

Next, the relay apparatus side network communication unit 12
4 sends the received voice signal to the communication control unit 122a, the communication control unit 122a sends a transmission instruction of the voice signal to the relay device side local wireless communication unit 123, and the relay device side based on the instruction. Local wireless communication unit 123
Transmits the audio signal to the communication device side local wireless communication unit 114.

Then, the communication apparatus side local wireless communication unit 1
A communication device control unit 113 receives the received voice signal.
To the communication device side speaker 112, and the communication device control unit 113 sends the audio signal to the communication device side speaker 112.
12 converts the voice signal into voice and outputs the voice of the other party. In this way, the normal call operation processing in the hands-free call system is performed.

Then, when the communication device control section 113 receives an instruction to end the existing call from the user via the call end button of the communication device 11 (S2), the communication device control unit 113 sends the call end instruction to the communication device side. The data is transmitted to the relay device side local wireless communication unit 123 via the local wireless communication unit 114. After that, the communication control unit 122a that has received the call end instruction via the local wireless communication unit 123 on the relay device side.
Sends an instruction to disconnect the existing call to the relay apparatus side network communication unit 124, and based on the instruction, the relay apparatus side network communication unit 124 causes the other party communication apparatus 1
The call with 4 is disconnected and the call ends (S11).

Here, when there is no instruction from the user to end the existing call (S2) and the call is continued, the local wireless communication between the communication device side local wireless communication unit 114 and the relay device side local wireless communication unit 123 is performed. When a momentary interruption occurs in the communication section, the communication device-side local wireless communication unit 114 and the relay apparatus-side local wireless communication unit 123 detect the instantaneous interruption in the local wireless communication section (S3). Then, the communication device side local wireless communication unit 114 sends a communication state detection signal indicating that the local wireless communication is in a non-communication state to the communication device control unit 113, and the relay device side local wireless communication unit 123.
Sends a communication state detection signal indicating that the local wireless communication section is in a non-communication state to the communication control unit 122a.

Next, the communication control unit 122a, which has received the communication state detection signal indicating that the local wireless communication section is in the non-communication state, instructs the relay device side microphone 121 to switch the voice input reception to ON. It is sent to the microphone switching unit 122b, and based on the switching instruction, the relay device microphone switching unit 122b switches ON the voice input reception in the relay device side microphone 121 to receive the voice input from the user (S4). Then, the relay device-side microphone 121 converts the input user voice into a voice signal and sends the voice signal to the communication control unit 122 a, and the communication control unit 12
2a transmits the audio signal to the partner communication device side network communication unit 144 via the relay device side network communication unit 124 or the like, and the partner communication device side speaker 1
42 converts the voice signal into voice and outputs the voice of the user.

On the other hand, the communication device control section 113, which has received the communication state detection signal indicating that the local wireless communication section is in the non-communication state, instructs the communication device side microphone 111 to switch off the voice input acceptance to OFF. The communication device microphone switching unit 113a sends the communication device microphone 111 to the microphone switching unit 113a based on the switching instruction.
The voice input acceptance in is switched to OFF and the voice input from the user is not accepted (S4).

Further, the relay device microphone switching section 122b
When the voice input acceptance in the relay device side microphone 121 is switched to ON, the message generation unit 122
A microphone switching message generation instruction is sent to c, and based on the generation instruction, the message generation unit 122c refers to the message storage unit 122d and generates a microphone switching message. Then, the message generator 122c
The generated microphone switching message is sent to the communication control unit 122a.
Then, the communication control unit 122a sends a transmission instruction of the microphone switching message to the relay device side network communication unit 12
4, the relay device side network communication unit 124 transmits the microphone switching message to the partner communication device side network communication unit 144 via the network communication network 13 (S5). After that, the partner communication device control unit 143, which has received the microphone switching message via the partner communication device side network communication unit 144, sends an instruction to display the microphone switching message to the partner communication device display unit 145 to communicate with the partner communication device. The device display unit 145 displays the microphone switching message.

FIG. 3A is a diagram showing an example of a display screen of a microphone switching message in the other party communication device 14.
In this way, the microphone switching message is displayed, for example, by the other party communication device display unit 145 as a character, and the other party can be informed of the switching of the microphone that receives the voice input.

Subsequently, the communication control unit 122a sends an instruction to try to reestablish the local wireless communication section connection with the local wireless communication unit 114 on the communication device side to the local wireless communication unit 123 on the relay device side, and the reestablishment is performed. Based on the trial instruction, the relay-apparatus-side local wireless communication unit 123 attempts to re-establish a local wireless communication section connection with the communication-device-side local wireless communication unit 114 (S6).

Here, the operation processing when the local wireless communication section connection is reestablished will be described. First, the communication control unit 122a sends an instruction to transmit a connection request packet including the identification information of the relay device 12 and the connection request information to the relay device-side local wireless communication unit 123, and based on the instruction, the relay device side. The local wireless communication unit 123 transmits the connection request packet to the communication device-side local wireless communication unit 114 and the communication device-side local wireless communication unit 114.

Next, the communication apparatus side local wireless communication unit 11
When receiving the connection request packet from the relay apparatus-side local wireless communication unit 123, the communication unit 4 sends the identification information and the connection request information included in the connection request packet to the communication apparatus control unit 113. Then, the communication device control unit 113
Sends to the communication device-side local wireless communication unit 114 an instruction to receive the identification information and the connection request information and transmit a connection request reception packet including the identification information of the communication device 11 and the connection request packet reception completion information. On the basis of the instruction, the communication device side local wireless communication unit 114 transmits the connection request reception packet to the relay device side local wireless communication unit 123.

Then, the local radio communication section 1 on the relay device side
Upon receiving the connection request reception packet from the communication device-side local wireless communication unit 114, the unit 23 sends the identification information and the reception completion information included in the connection request reception packet to the communication control unit 122a. Then, the communication control unit 12
2a receives the identification information and the reception completion information, sends an instruction to transmit a connection confirmation packet including connection establishment confirmation information to the relay apparatus side local wireless communication unit 123, and based on the instruction, the relay apparatus side The local wireless communication unit 123, the communication device side local wireless communication unit 114,
The connection confirmation packet is transmitted. Here, by transmitting the connection confirmation packet, the communication control unit 122a confirms that the local wireless communication section connection has been reestablished.

After that, the local wireless communication unit 1 on the communication device side
When receiving the connection confirmation packet from the relay apparatus-side local wireless communication unit 123, the communication unit control unit 1 receives the connection establishment confirmation information included in the connection confirmation packet.
Send to 13. Then, the communication device control unit 113 receives the establishment confirmation information and confirms that the local wireless communication section connection has been reestablished.

When the local wireless communication section connection is re-established by such operation processing (S7), the relay apparatus side local wireless communication section 123 confirms that the communication state of the local wireless communication section is the connected state. A communication state detection signal that is detected and indicates that the local wireless communication section is in the connected state is sent to the communication control unit 122a, and the communication control unit 12 is detected.
The relay device microphone switching unit 122b of the relay device microphone switching unit 122b sends an instruction to switch the voice input reception of the relay device microphone 121 to OFF to the relay device microphone switching unit 122b. The voice input acceptance is switched off (S8). Further, the communication device-side local wireless communication unit 114 detects that the communication state of the local wireless communication section is in the connected state, and sends a communication state detection signal indicating that the local wireless communication section is in the connected state to the communication apparatus control. The communication device control unit 113 sends the communication device microphone switching unit 113a.
To the communication device side microphone 111, and sends a switching instruction to turn on the voice input acceptance in the communication device side microphone 111, and
The communication device microphone switching unit 113a includes the communication device microphone 1
Switch the voice input reception in 11 to ON (S
8). Then, the hands-free call system performs a call operation process in a normal time and performs the above-described operations (S1).

In this way, when a momentary interruption occurs in the local wireless communication section, the microphone that receives a voice input from the user is switched from the communication device side microphone 111 to the relay device side microphone 121, and the local wireless communication is performed. When the section connection is reestablished, the microphone that receives the voice input from the user is set again to the communication device side microphone 111.
By switching to, it is possible to continue the call by the hands-free call system using local wireless communication without interrupting the voice from the user.

On the other hand, when the local wireless communication section connection is not re-established by the operation processing (S7), the communication control unit 122a measures the presence or absence of elapse of a certain time by the timer provided therein ( S9). At this time, until the elapse of a fixed time is measured, the communication control unit 122
The a sends an instruction to try to reestablish the local wireless communication section connection to the relay device side local wireless communication unit 123, and repeats the above processing (S6).

When the elapse of a certain period of time is measured, the communication control unit 122a sends a call end notice message generation instruction to the message generation unit 122c, and based on the call end notice message generation instruction, the message generation unit 1a.
22c refers to the message storage unit 122d to generate a call end notice message. Next, the message generation unit 122c sends the generated call end notice message to the communication control unit 122a, and the communication control unit 122a sends an instruction to send the call end notice message to the relay device side network communication unit 124. Based on the transmission instruction, the relay device side network communication unit 124 transmits the call end notice message to the partner communication device side network communication unit 144 via the network communication network 13 (S10). After that, the partner communication device control unit 143, which has received the call end notice message via the partner communication device side network communication unit 144, sends an instruction to display the call end notice message to the partner communication device display unit 145, and the other party The communication device display unit 145 displays the call end notice message.

FIG. 3B is a diagram showing an example of a display screen of the call end notice message in the other party communication device 14. In this way, the call end notice message is displayed, for example, on the other party's communication device display unit 145 as a character to notify the other party in advance that the existing call will be disconnected. Here, the number in the lower center of the other party's communication device display portion 145 represents the number of seconds remaining until the call is disconnected.

Thereafter, the communication control unit 122a measures the elapse of a certain time period after sending the instruction to send the call end notice message by the timer provided therein, and when the certain time period has elapsed, the communication control unit 122a is present. An instruction to disconnect the call is sent to the relay apparatus side network communication unit 124,
Based on the instruction, the relay device side network communication unit 1
24 disconnects the call with the communication device 14 of the other party, and the call ends (S11).

FIG. 4 is a block diagram showing the hands-free communication system using local wireless communication according to the present invention, which constitutes the present system when connection is reestablished after a momentary disconnection in the local wireless communication section. It is a sequence diagram which shows the flow of the operation process of an apparatus.

First, before the instantaneous interruption of the local wireless communication section between the communication device 11 and the relay device 12 is detected,
As described above, the hands-free call system using the local wireless communication performs the call operation process in the normal time (S21).

Next, when an instantaneous interruption occurs in the local wireless communication section, the communication apparatus 11 causes the communication apparatus-side local wireless communication unit 114 to detect that the communication state in the local wireless communication section is in the non-communication state, and relay it. The device 12 detects that the communication state of the local wireless communication section is the non-communication state by the relay device side local wireless communication unit 123 (S).
22).

Then, the communication device 11 causes the communication device microphone switching unit 113a to switch off the voice input reception in the communication device microphone 111, and the relay device 12 causes the relay device microphone switching unit 122b to switch.
O for accepting voice input in the microphone 121 on the relay device side
Switching to N is executed (S23).

Thereafter, the relay apparatus 12 causes the message generation section 122c to generate a microphone switching message,
The generated microphone switching message is transmitted to the partner communication device 14, and the partner communication device 14 displays the microphone switch message via the partner communication device display unit 145 (S24).

Then, the relay device 12 transmits a connection request packet to the communication device 11, tries to reestablish the local wireless communication section connection several times (S25), and at the same time, through the relay device side microphone 121. A voice input from the user is received, converted into a voice signal, and the communication device 14 of the other party
The other party communication device 14 receives the voice signal, converts it into a voice through the other party communication device side speaker 142, and outputs the voice of the user (S26), and the relay device 12 transmits the local wireless communication. The relay device 12 and the partner communication device 14 repeat this process while trying to reestablish the section connection.

At this time, the communication device 11 is replaced by the relay device 12
When the connection request packet is received from, the connection request reception packet is transmitted to the relay device 12. Then, the relay device 12
Receives the connection request reception packet, it transmits a connection confirmation packet to the communication device. In this way, the local wireless communication section connection between the communication apparatus 11 and the relay apparatus 12 is reestablished (S27), and the communication apparatus 11 causes the communication apparatus-side local wireless communication unit 114 to communicate in the communication state of the local wireless communication section. The relay device 12 detects that the communication state of the local wireless communication section is the connected state by the relay device side local wireless communication unit 123 (S28).

Then, the communication device 11 causes the communication device microphone switching unit 113a to switch the voice input acceptance of the communication device microphone 111 to ON (S2).
9). Further, the relay device 12 includes the relay device microphone switching unit 1
22b, the voice input acceptance in the relay device side microphone 121 is switched to OFF (S29).

After that, the communication device 11, the relay device 12, and the partner communication device 14 repeat the normal call operation processing of the above-mentioned hands-free communication system before the instantaneous interruption occurs in the local wireless communication section ( S21), when a momentary interruption occurs again in the local wireless communication section, the above-described operation processing of the hands-free call system in the case where the momentary interruption occurs in the local wireless communication section is repeated.

FIG. 5 is a block diagram showing the hands-free communication system using local wireless communication according to the present invention, which constitutes this system in the case where connection is not reestablished after a momentary interruption in the local wireless communication section. It is a sequence diagram which shows the flow of the operation process of an apparatus.

First, the communication device 11, the relay device 12, and the communication device 14 on the other side of the local wireless communication section are again connected to the local communication device 14 in the same manner as the operation process in the case where the reestablishment of the connection is detected after the instantaneous disconnection of the local wireless communication section is detected. Before the instantaneous disconnection of the wireless communication section is detected, as described above, the call operation processing in the normal time of the hands-free communication system is performed (S31), and the local wireless communication section between the communication device 11 and the relay device 12 is performed. When a momentary interruption occurs in the communication device 11,
The communication device-side local wireless communication unit 114 detects that the communication state of the local wireless communication section is in the non-communication state, and the relay device 12 determines that the relay device-side local wireless communication unit 1
By 23, it is detected that the communication state of the local wireless communication section is in the non-communication state (S32).

Then, in the same manner as the above-mentioned operation processing, the communication device 11 causes the communication device microphone switching section 113a to perform an OF reception of voice input in the communication device side microphone 111.
Switching to F is performed, and the relay device 12 causes the relay device microphone switching unit 122b to switch the voice input acceptance of the relay device microphone 121 to ON (S3).
3). Then, the relay device 12 includes the message generation unit 12
2c, a microphone switching message is generated, and the generated microphone switching message is transmitted to the partner communication device 14, and the partner communication device 14 displays the partner communication device display unit 14
The microphone switching message is displayed via S5 (S
34).

Further, similarly to the above-mentioned operation processing, the relay device 12 transmits a connection request packet to the communication device 11 and tries to reestablish the local wireless communication section connection several times (S35) and relays it. A voice input from a user is accepted via the device-side microphone 121, converted into a voice signal and transmitted to the partner communication device 14, and the partner communication device 1
4 receives the voice signal, converts it into voice through the speaker 142 on the partner communication device side, and outputs the voice of the user (S36), and the relay device 12 tries to reestablish the local wireless communication section connection. While doing so, the relay device 12 and the partner communication device 14 repeat this process.

After that, when the relay device 12 measures the elapse of a certain time t1 after detecting the non-communication state of the local wireless communication section by the timer provided therein, the message generation unit 122c causes the relay end device 12c to notify the call end message. Is generated and the generated call end notice message is transmitted to the partner communication device 14, and the partner communication device 14 displays the call end notice message via the partner communication device display unit 145 (S37). Further, the relay device 12
When the elapse of a certain time t2 has been measured after transmitting the call end notice message by an internal timer, disconnects the call with the partner communication device 14 (S38). Then, the relay device 12 transmits a connection request packet toward the communication device 11 in preparation for the next call even after disconnecting the call with the communication device 14 on the other side,
Continue to try to reestablish the local wireless communication section connection (S3
9).

FIG. 6 is a timing chart showing the switching status of microphones that receive voice input in the hands-free communication system using local wireless communication according to the present invention. First, when a call is started in the hands-free call system, the communication device microphone switching unit 113a turns on voice input acceptance in the communication device microphone 111.
Switch to.

Next, when a momentary disconnection occurs in the local wireless communication section between the communication device 11 and the relay device 12, the communication device microphone switching section 113a switches the voice input acceptance in the communication device side microphone 111 to OFF and relays. The device microphone switching unit 122b switches ON the voice input reception in the relay device side microphone 121.

Then, when the local wireless communication section connection is reestablished, the communication device microphone switching section 113a turns on the voice input acceptance in the communication device side microphone 111.
The relay device microphone switching unit 122b switches the voice input reception in the relay device microphone 121 to OFF.

Then, when a momentary interruption occurs again in the local wireless communication section, as described above, the communication device microphone switching unit 1
13a switches off voice input reception in the communication device side microphone 111, and the relay device microphone switching unit 12
2b turns on the voice input reception in the relay device side microphone 121.

After that, if the local wireless communication section connection is not re-established after the elapse of a certain time t3, when the call in the hands-free call system is disconnected, the relay device microphone switching unit 122b causes the relay device microphone 121
The voice input acceptance in is switched to OFF.

FIG. 7 is an external view of a vehicle-mounted hands-free call system, which is an example of use of the hands-free call system using local wireless communication according to the present invention. This in-vehicle hands-free call system enables hands-free call using local wireless communication in the interior of an automobile. The communication device control unit 113 in the communication device 11 and the communication device-side local wireless communication unit 114 are connected to each other. Corresponding hands-free control device 100, in-vehicle hands-free microphone 101 corresponding to communication device side microphone 111 in communication device 11, in-vehicle speaker 102 corresponding to communication device side speaker 112 in communication device 11, and relay device 12 And a mobile phone 200 corresponding to.

That is, the hands-free control device 100 and the mobile phone 200 are connected by local wireless communication, and when the communication state of this local wireless communication section is the connected state, the voice of the driver who is the speaker is transmitted to the in-vehicle hands. The free microphone 101 receives a voice input and converts it into a voice signal, the hands-free control device 100 transmits the voice signal to the mobile phone 200 by local wireless communication, and the mobile phone 200 transmits it to the other party of the call. . Then, the voice of the other party of the call is transmitted to the mobile phone 200.
Is received and transmitted to the hands-free control device 100 by local wireless communication, and the in-vehicle speaker 102 outputs a voice.

When a momentary interruption occurs in the local wireless communication section, the mobile phone 200 sets the microphone for receiving voice input from the driver to the vehicle-mounted hands-free microphone 1.
01 is switched to the microphone of the mobile phone 200, the voice of the driver is transmitted to the other party of the call, and an attempt is made to reestablish the local wireless communication connection with the hands-free control device 100.

After that, when the local wireless communication connection with the hands-free control device 100 is re-established, the mobile phone 200 uses a vehicle-mounted hands-free microphone from the microphone of the mobile phone 200 to receive a voice input from the driver. By switching to the microphone 101, as described above, the in-vehicle hands-free microphone 101 receives the voice input and converts the driver's voice into a voice signal, and the hands-free control device 1
00 transmits the voice signal to the mobile phone 200 by local wireless communication, and the mobile phone 200 transmits it to the other party of the call.

On the other hand, if the reestablishment of the local wireless communication connection with the hands-free control device 100 is not performed after a certain period of time, the mobile phone 200 disconnects the existing call.

As described above, the present invention is realized, for example, as an in-vehicle hands-free call system. According to this in-vehicle hands-free call system, a user who is a driver uses the mobile phone 200. Not only the hands-free call is possible without connecting to the hands-free control device 100 by wire, but also the mobile phone 20
Even if the local wireless communication between 0 and the hands-free control device 100 is instantaneously interrupted, the voice of the driver can be transmitted to the other party of the call, and the discomfort felt by the other party can be suppressed.

Further, even if the local wireless communication between the mobile phone 200 and the hands-free control device 100 continues to be disconnected for several tens of seconds or several minutes, it still exists after a certain period of time. It is possible to disconnect the call and suppress the charge for unnecessary calls.

As described above, according to the present embodiment, in the hands-free call system using local wireless communication, even if a momentary interruption occurs in the local wireless communication section, the voice from the user is transmitted. By switching the microphone that receives the input to the relay device-side microphone 121, it is possible to reduce the discomfort of the other party due to communication interruptions, user voice interruptions, and the like.

Further, even if a momentary disconnection occurs in the local wireless communication section and it is difficult to reestablish the local wireless communication section connection, the user disconnects the call after a certain period of time to disconnect the call. Without being aware of the continuation, it is possible to prevent an unexpected increase in billing for calls.

Although the hands-free call system using local wireless communication according to the present invention has been described above based on the embodiment, the present invention is not limited to the above-mentioned embodiment.

For example, in the above embodiment, the communication device side local wireless communication unit 114 and the relay device side local wireless communication unit 123 detect the communication state of the local wireless communication section based on the presence or absence of packet reception. ,
The communication state in the local wireless communication section may be detected based on the electric field strength levels in the communication device-side local wireless communication unit 114 and the relay-device-side local wireless communication unit 123.

Further, in the above embodiment, the microphone switching message and the call end notice message are displayed on the partner communication device display unit 145 of the partner communication device 14 as characters, but the message generation unit of the relay device 12 is used. At 122 c, the microphone switching message and the call end notice message are generated by a voice signal, the voice signal is transmitted to the partner communication device 14, and the partner communication device side speaker 1 in the partner communication device 14 is generated.
42 may convert the voice signal into voice, superimpose it on the voice of the user, and output the voice.

Further, in the above embodiment, the microphone switching message to be transmitted to the partner communication apparatus 14 is transmitted only when the communication apparatus side microphone 111 is switched to the relay apparatus side microphone 121, but the connection is reestablished. And the communication device side microphone 1
It may be transmitted even when switching to 11.

In the above-described embodiment, when a momentary interruption occurs in the local wireless communication section, a connection request packet is sent from the relay apparatus 12 to the communication apparatus 11 to try to reestablish the local wireless communication section connection. And a connection confirmation packet is transmitted, and from the communication device 11 to the relay device 12,
Although the connection request reception packet is transmitted, on the contrary, the connection request packet and the connection confirmation packet are transmitted from the communication device 11 to the relay device 12, and the connection request is transmitted from the relay device 12 to the communication device 11. The reception packet may be transmitted.

Furthermore, in the above-mentioned embodiment, when the instantaneous interruption occurs in the local wireless communication section, the relay device 12
However, if the connection state of the local wireless communication section is not detected after a certain period of time has passed since the disconnection state of the local wireless communication section was detected, the condition for transmitting the call end notice message to the partner communication device 14 is However, the connection state of the local wireless communication section may not be detected after a certain number of times of re-establishment of the connection of the local wireless communication section. Similarly, the relay device 12 transmits a call end notice message to the partner communication device 14 as a condition for disconnecting the call with the partner communication device 14, and then performs reestablishment attempts of the local wireless communication section connection for a certain number of times. May be after.

[0100] Further, after a lapse of a fixed time from the detection of the non-communication state of the local wireless communication section, the relay device 12
The call end notice message is transmitted to disconnect the call. However, when the relay device 12 receives a call continuation instruction from the user before the call disconnection by the relay device 12, the user does not disconnect the call and the user does not disconnect the call. , Relay device 1
2 may be used to continue the call.

[0101]

As described above, the present invention is a hands-free call system including a communication device and a relay device, wherein the communication device receives a voice input from a user. An input unit, a voice output unit for outputting a voice from the other party, and a first wireless communication unit for wirelessly transmitting and receiving the voice to and from the relay device,
The relay device includes a second voice input unit that receives voice input from a user, a second wireless communication unit that wirelessly transmits and receives the voice to and from the communication device, the first wireless communication unit, and the second wireless unit. First wireless communication state detecting means for detecting a communication state of wireless communication with the communication means, and the first voice input means and the second voice input according to the detection result of the first wireless communication state detecting means. The voice input switching means for selecting one of the means and the communication device of the other party,
Network communication means for transmitting the voice received by the first voice input means or the second voice input means selected by the voice input switching means via a communication network.

As a result, even if the communication state in the section connected by the local wireless communication falls into the disconnected state due to the momentary interruption and is restored to the connected state by the reestablishment of the connection, the communication in the section connected by the local wireless communication is performed. By switching the microphone that accepts the user's voice input according to the state, the voice from the user can be transmitted to the other party without interruption, so that the other party's sense of discomfort with respect to communication interruption, voice interruption, etc. is reduced. Can be suppressed.

Furthermore, the present invention is a hands-free call system comprising a communication device and a relay device, wherein the communication device receives a voice input from a user.
The relay device includes voice input means, voice output means for outputting voice from the other party, and first wireless communication means for wirelessly transmitting and receiving the voice to and from the relay device.
First wireless communication state detection for detecting a communication state of wireless communication between the second wireless communication means for wirelessly transmitting and receiving the voice to and from the communication device, and the first wireless communication means and the second wireless communication means. Means, network communication means for transmitting and receiving the voice through the communication line network with the communication device of the other party, and a communication line with the communication device of the other party according to the detection result of the first wireless communication state detecting means. And a network communication disconnection unit for terminating a call through the network.

As a result, even if the communication state in the section connected by the local wireless communication becomes a non-communication state due to a momentary interruption and it is difficult to reestablish the connection, the operation from the user is required. However, since the existing call with the other party is disconnected after the elapse of a certain time, it is possible to prevent an increase in billing due to the existing call continuing without the user's knowledge.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a hands-free call system using local wireless communication and a relay device in the system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of overall operation processing in the system.

FIG. 3A is a diagram showing a display screen example of a microphone switching message in the partner communication device, and FIG. 3B is a diagram showing a display screen example of a call end notice message in the partner communication device.

FIG. 4 is a sequence diagram showing a flow of operation processing of each device constituting the same system when connection is reestablished after a momentary disconnection occurs in a section connected by local wireless communication.

FIG. 5 is a sequence diagram showing a flow of operation processing of each device constituting the same system when connection is not reestablished after a momentary disconnection occurs in a section connected by local wireless communication.

FIG. 6 is a timing chart showing a switching situation of a microphone that receives a voice input in the system.

FIG. 7 is a diagram showing a usage example of the system.

FIG. 8 is a block diagram showing a configuration of a conventional communication system.

[Explanation of symbols]

1, 11 Communication device 2 base stations 3, 13 Network communication network 4, 14 Counterpart communication device 12 Relay device 100 hands-free controller 101 In-vehicle hands-free microphone 102 in-vehicle speaker 111 Communication device side microphone 112 Communication device side speaker 113 communication device control unit 113a communication device microphone switching unit 114 communication device side local wireless communication unit 121 Microphone on the relay device side 122 Relay Device Control Unit 122a communication control unit 122b Relay device microphone switching unit 122c message generator 122d message storage unit 123 Local wireless communication unit on relay device side 124 Relay device side network communication unit 141 Microphone on the other party's communication device side 142 Speaker of communication device 143 Counterpart communication device control unit 144 Network communication unit of partner communication device 145 Counterpart communication device display 200 mobile phones

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04M 1/247 H04B 7/26 M (72) Inventor Teruaki Ata 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Sangyo Co., Ltd. (72) Kenichi Moriguchi, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor, Takeshi Kindo, 1006 Kadoma, Kadoma City, Osaka F Term (Reference) ) 5K027 BB01 FF21 HH29 5K067 AA21 AA26 BB03 BB21 DD11 DD41 DD51 EE02 EE12 FF02 FF25 FF38 GG01 GG11

Claims (33)

[Claims] 1. A hands-free call system including a communication device and a relay device, wherein the communication device outputs first voice input means for receiving voice input from a user and voice from a call partner. And a first wireless communication unit that wirelessly transmits and receives the voice to and from the relay device, the relay device includes a second voice input unit that receives a voice input from a user, and the communication device. Second wireless communication means for wirelessly transmitting and receiving the voice, and first wireless communication state detecting means for detecting a communication state of wireless communication between the first wireless communication means and the second wireless communication means, A voice input switching means for selecting one of the first voice input means and the second voice input means according to the detection result of the first wireless communication state detection means, and communication of a communication partner. And a network communication unit for transmitting the voice received by the first voice input unit or the second voice input unit selected by the voice input switching unit, via a communication network. Hands-free call system that does. 2. The voice input switching means selects the second voice input means when the communication state of the wireless communication detected by the first wireless communication state detecting means is a non-communication state, and the communication state is selected. 2. The hands-free call system according to claim 1, wherein the first voice input means is selected when is connected. 3. The relay device further comprises a first wireless communication retry unit for attempting to recover the connection with the communication device when the communication state detected by the first wireless communication state detecting unit is a non-communication state. The hands-free call system according to claim 1, further comprising: 4. The handsfree call system according to claim 1, wherein the first wireless communication state detecting means detects the communication state of wireless communication depending on whether or not a packet is received. 5. The hands-free call system according to claim 1, wherein the first wireless communication state detecting means detects the communication state of wireless communication based on the strength of the electric field strength level. 6. The relay device further comprises voice input switching message generation means for generating a message for notifying the communication partner of the selection by the voice input switching means, and the network communication means is a communication device of the communication partner. 2. The hands-free call system according to claim 1, wherein the message generated by the voice input switching message generating means is transmitted via a communication line network. 7. The communication device further includes a second wireless communication state detecting unit that detects a communication state of wireless communication between the first wireless communication unit and the second wireless communication unit, and the second wireless unit. 2. The hands-free call system according to claim 1, further comprising a second wireless communication retry means for attempting to recover the connection with the relay device when the communication state detected by the communication state detecting means is a non-communication state. . 8. The hands-free call system according to claim 7, wherein the second wireless communication state detecting means detects a communication state of wireless communication depending on whether or not a packet is received. 9. The hands-free call system according to claim 7, wherein the second wireless communication state detecting means detects the communication state of the wireless communication based on the strength of the electric field strength level. 10. A hands-free call system including a communication device and a relay device, wherein the communication device outputs first voice input means for receiving voice input from a user and voice from a call partner. And a first wireless communication unit that wirelessly transmits and receives the voice, and the relay device includes a second wireless communication unit that wirelessly transmits and receives the voice to and from the communication device. A first wireless communication status detecting means for detecting a communication status of wireless communication between the first wireless communication means and the second wireless communication means; A network communication unit for transmitting and receiving, and a network for ending a call with a communication device of a communication partner via a communication network according to the detection result of the first wireless communication state detecting unit. A hands-free call system comprising work communication disconnection means. 11. The relay device further comprises clocking means for measuring an elapsed time after detecting the first wireless communication state, and the network communication disconnecting means is inoperable by the first wireless communication state detecting means. After detecting the state, when the time measuring means measures the passage of a certain time,
11. The hands-free communication system according to claim 10, wherein the communication with the communication device of the communication partner is terminated through the communication network. 12. The relay device further comprises a first wireless communication retrying device that attempts to restore the connection with the communication device when the communication condition detected by the first wireless communication condition detecting device is a non-communication condition. And a number-of-trials measuring unit that measures the number of retries of the first wireless communication retry unit, the network communication disconnecting unit is configured to detect the number of retries after the first wireless communication state detecting unit detects a disconnection state. 11. The hands-free call system according to claim 10, wherein when the measurement means measures a certain number of trials, the call with the communication device of the call partner via the communication network is terminated. 13. The hands-free call system according to claim 10, wherein the first wireless communication state detecting means detects a communication state of wireless communication depending on whether or not a packet is received. 14. The hands-free call system according to claim 10, wherein the first wireless communication state detecting means detects the communication state of wireless communication based on the strength of the electric field strength level. 15. The relay device further comprises call termination message generating means for generating a message for notifying the call partner of the call termination by the network communication disconnecting means in advance, and the call termination message generating means via the communication network to the communication device of the call partner. 11. The hands-free call system according to claim 10, further comprising a network transmission means for transmitting the message generated by the call end message generation means. 16. The communication device further includes a second wireless communication state detecting unit that detects a communication state of wireless communication between the first wireless communication unit and the second wireless communication unit, and the second wireless unit. 11. The hands-free call system according to claim 10, further comprising a second wireless communication retry means for attempting to restore the connection with the relay device when the communication state detected by the communication state detecting means is a non-communication state. . 17. The hands-free call system according to claim 16, wherein the second wireless communication state detecting means detects the communication state of wireless communication depending on whether or not a packet is received. 18. The hands-free call system according to claim 16, wherein the second wireless communication state detecting means detects the communication state of wireless communication based on the strength of the electric field strength level. 19. The relay device further includes a second voice input unit that receives voice input from a user, and a communication state of wireless communication detected by the first wireless communication state detection unit is in a non-communication state. And a voice input switching unit that selects the first voice input unit when the second voice input unit is selected and the communication state is the connection state, and the network communication unit is the communication of the communication partner. The device receives the voice received by the first voice input device or the second voice input device selected by the voice input switching device via a communication network.
11. The handsfree call system according to claim 10, wherein the call is transmitted. 20. The relay device further comprises voice input switching message generation means for generating a message for notifying the communication partner of the selection by the voice input switching means, and the network communication means is a communication device of the communication partner. 20. The hands-free call system according to claim 19, wherein the message generated by said voice input switching message generating means is transmitted via a communication network. 21. A relay device for wirelessly receiving a voice from a communication device that receives a voice input from a user, wherein the relay device includes voice input means for receiving a voice input from a user, and the communication device. Wireless communication means for wirelessly transmitting and receiving voice, wireless communication state detecting means for detecting a communication state of wireless communication with the communication device, and from the communication device according to the detection result of the wireless communication state detecting means. And a voice input switching means for selecting one of the voice receiving means and the voice inputting means, the communication device of the other party receiving the voice from the communication device selected by the voice input switching means via a communication network. A relay device comprising: a network communication unit that transmits a voice or the voice received by the voice input unit. 22. The voice input switching means selects the voice input means when the communication state of the wireless communication detected by the wireless communication state detecting means is a non-communication state, and the communication state is a connection state. 22. The relay device according to claim 21, wherein voice reception from the communication device is selected in some cases. 23. The relay device further comprises a wireless communication retry unit that attempts to restore the connection with the communication device when the wireless communication is in a non-communication state according to the detection result of the wireless communication state detecting unit. The relay device according to claim 21, further comprising: 24. The relay device further comprises voice input switching message generation means for generating a message for notifying the communication partner of the switching by the voice input switching means, and the network communication means is a communication device of the communication partner. 22. The relay device according to claim 21, wherein the message generated by said voice input switching message generating means is transmitted via a communication network. 25. A relay device that wirelessly receives the voice from a communication device that receives voice input from a user, wherein the relay device includes a wireless communication unit that wirelessly transmits and receives voice to and from the communication device. A wireless communication state detecting means for detecting a communication state of wireless communication with the communication device; a network communication means for transmitting / receiving the voice to / from a communication device of a communication partner through a communication line network; A relay device comprising: a network communication disconnecting unit that terminates a call with a communication device of a call partner via a communication line network according to a detection result. 26. The relay device further comprises clocking means for measuring an elapsed time after detecting the wireless communication state, and the network communication disconnecting means detects the non-communication state by the wireless communication state detecting means. later,
26. The relay device according to claim 25, wherein when the time measuring means measures the elapse of a certain period of time, the call with the communication device of the call partner via the communication network is terminated. 27. The wireless communication retry means for attempting to restore the connection with the communication device when the wireless communication is in a non-communication state according to the detection result of the wireless communication status detecting means. And a trial number measuring means for measuring the number of retries of the wireless communication retry means, the network communication disconnecting means, after the wireless communication state detecting means detects a disconnection state,
26. The relay device according to claim 25, wherein when the trial count measuring means measures a certain number of trials, the call with the communication device of the call partner via the communication network is terminated. 28. The relay device further comprises call termination message generation means for generating a message for notifying the other party of the termination of the call by the network communication disconnecting means, and the communication device of the other party via the communication network. 26. The relay apparatus according to claim 25, further comprising a network transmission unit that transmits the message generated by the call end message generation unit. 29. The relay device further comprises voice input means for receiving voice input from a user, and voice reception and voice input means from the communication device according to a detection result of the wireless communication state detection means. The voice input switching means for selecting any one of the above, and the communication device of the communication partner, the voice received from the communication device selected by the voice input switching means or the voice input means is accepted by the communication device of the communication partner. 26. The relay device according to claim 25, further comprising a network communication unit that transmits the voice. 30. The relay device further comprises voice input switching message generation means for generating a message for notifying the communication partner of switching by the voice input switching means, and the network communication means is a communication device of the communication partner. 30. The relay device according to claim 29, wherein the message generated by said voice input switching message generating means is transmitted via a communication network. 31. A hands-free call method in a system including a communication device and a relay device, wherein the communication device includes a first voice input step of receiving voice input from a user, and a voice from a communication partner. A second voice input step of receiving a voice input from a user in the relay device, the first voice communication step of transmitting and receiving the voice wirelessly to and from the relay device, A second wireless communication step of wirelessly transmitting and receiving the voice to and from a communication device; a wireless communication state detecting step of detecting a communication state of wireless communication between the first wireless communication step and the second wireless communication step; According to the detection result of the wireless communication state detecting step, the first voice inputting step and the second voice inputting step. In the voice input switching step of selecting any one of the steps, and in the communication device of the communication partner, via the communication network, the first voice input step or the second voice input step selected in the voice input switching step. And a network communication step of transmitting the received voice. 32. A hands-free call method in a system composed of a communication device and a relay device, comprising: a first voice input step of receiving voice input from a user in the communication device; And a first wireless communication step that wirelessly transmits and receives the voice to and from the relay device, wherein the relay device performs second wireless communication that wirelessly transmits and receives the voice to and from the communication device. A wireless communication state detecting step of detecting a communication state of wireless communication between the first wireless communication step and the second wireless communication step; Depending on the network communication step of transmitting and receiving, and the detection result of the wireless communication state detecting step, And a network communication disconnection step of terminating a call with a communication device via a communication line network. 33. In the relay device, further, when a second voice input step of receiving voice input from a user, and the communication state of the wireless communication detected in the wireless communication state detecting step is in a non-communication state, A voice input switching step of selecting the first voice input step when the second voice input step is selected and the communication state is a connection state, and the network communication step is performed by a communication device of a communication partner. 4. The voice received in the first voice input step or the second voice input step selected in the voice input switching step is transmitted via a communication line network.
Hands-free call method described in 2.