JP2008258717A - Hands-free calling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hands-free calling device for making a driver instantaneously recognize a vehicle state even when the driver is busy at hands-free calling, and for promoting the driver to facilitate countermeasures to the abnormality of the vehicle. <P>SOLUTION: The hands-free calling device has a communication part 6 for transmitting/receiving information with in-vehicle equipment installed in the vehicle of an automobile: a memory 7 for storing voice data of which a driver 2 or the other party of calling is notified; a portable telephone connection part 9 for transmitting/receiving a voice signal with the portable telephone 3; a headset 4 for inputting/outputting a calling voice with the other party of calling and the driver 2; and a calling/interruption switching part 10 for switching whether to validate hands-free calling by relaying the voice signal of calling between the portable telephone 3 and the headset 4 or whether to output voice data to the driver 2 or the other party of calling by interrupting calling. The hands-free calling device has a control part 11 for, when the abnormality of the vehicle is generated during calling by the hands-free calling under operation, controlling a calling/interruption switching part 10 interrupt the calling between the driver 2 and the other party of calling, and for making a headset 4 output warning voice data to let the driver know the state of the abnormality of the vehicle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hands-free call device that enables a call without having to hold a telephone in a vehicle cabin.

  2. Description of the Related Art Conventionally, a hands-free call device that enables a call without having to hold a telephone in a vehicle cabin is known.

As an example of a hands-free call device, a device that automatically cuts a call when a danger is detected according to the user of the hands-free call device, that is, the situation of the driver or the vehicle is known. (For example, refer to Patent Document 1).
Special table 2005-507125 gazette

  However, in the hands-free call device disclosed in Patent Document 1, the call is cut off without any notification being given to the driver or the call partner when the call is cut off. There was a problem in that it was not possible to know whether it was caused by an abnormality or due to a malfunction of the telephone line, and eventually the abnormality of the vehicle was not noticed immediately.

  Accordingly, it is an object of the present invention to provide a hands-free call device that allows a driver to immediately recognize a vehicle state even during a hands-free call and prompts the driver to respond to a vehicle abnormality.

In order to achieve the above object, the invention described in claim 1 is a hands-free call device for performing a hands-free call using a telephone in a car,
A communication unit for transmitting and receiving information to and from an in-vehicle device provided in the automobile;
Storage means for storing voice data to be notified to the driver of the car and the call partner of the driver;
Telephone connection means for transmitting and receiving audio signals to and from the telephone;
Voice input / output means for inputting / outputting call voice between the driver and the call partner;
The hands-free call is made possible by relaying the voice signal of the call between the telephone and the voice input / output means, or the operation between the telephone and the voice input / output means is interrupted A call / interrupt switching means for switching whether to output the voice data to a person or the other party,
When a vehicle abnormality occurs during a hands-free call while driving, the call / interrupt switching means cuts off the call between the driver and the other party to alert the vehicle abnormality state It features a hands-free call device having control means for outputting the voice data from the voice input / output means.

  The invention according to claim 2 is the hands-free according to claim 1, wherein the control means transmits the voice data explaining the reason why the call is interrupted to the telephone of the other party through the telephone through a general telephone line. It features a communication device.

  According to a third aspect of the present invention, the control means transmits to the driver voice data for explaining a coping method for the vehicle abnormal condition together with voice data notifying the vehicle abnormal condition. Item 2 is a hands-free call device.

  Furthermore, the invention according to claim 4 is characterized in that the control means transmits the voice data for warning and the voice data explaining the coping method for a predetermined time or a predetermined number of times to the driver. The hands-free call device according to any one of claims 1 to 3, which enables a hands-free call regardless of the state of the vehicle after the free call is terminated and a predetermined time elapses.

  According to the first aspect of the present invention configured as described above, when a vehicle abnormality occurs during a call by a hands-free call during driving, the control means uses the call / interrupt switching means to cause the driver and the other party to communicate with each other. The voice alert data that informs the state of the vehicle abnormality at that time is output from the voice input / output means worn by the driver, so even if the driver is talking The driver can immediately recognize the vehicle state by voice, and can prompt the driver to respond to the vehicle abnormality.

  In the second aspect, since the control means transmits the voice of the notification voice data explaining the reason why the call is cut off to the telephone of the other party of the call through the telephone, the call is cut off and the user will feel anxiety. This not only gives the other party a sense of security, but also allows the driver to concentrate on dealing with vehicle abnormalities without worrying about disrespect for the other party.

  According to the third aspect of the present invention, the control means transmits to the driver the voice of the corresponding voice data explaining the coping method together with the voice of the warning voice data that informs the vehicle abnormality state. You can concentrate on dealing with vehicle abnormalities without worrying about blockage or driving.

  Further, according to a fourth aspect of the present invention, after the control means transmits the voice of the warning voice data and the voice of the corresponding voice data for a predetermined time or a predetermined number of times to the driver, the hands-free call device of the present invention is terminated. After a certain period of time has elapsed, normal hands-free calling is possible again regardless of the vehicle status, so when a driver calls a dealer or a repairer according to instructions for dealing with vehicle abnormalities Talking in a hands-free state is possible, and it is possible to make a prompt contact without necessarily stopping the vehicle.

  Hereinafter, the present invention will be described based on examples of embodiments according to the present invention.

<Constitution>
FIG. 1 is a configuration diagram of the hands-free communication device of the present embodiment.

  In FIG. 1, reference numeral 1 denotes an automobile meter device having a warning light that warns of an abnormal state of a vehicle. The meter device 1 has a meter control unit, and is controlled by this meter control unit.

  The meter device 1 drives and lights a meter and an indicator based on information on a running state of an automobile and information on an abnormal state of the vehicle obtained through a vehicle network system such as a CAN (Controller Area Network) communication system. .

  Reference numeral 2 denotes a driver of the car, reference numeral 3 denotes a mobile phone owned by the driver 2, reference numeral 4 denotes a headset worn on the head when the driver 2 makes a hands-free call, and reference numeral 5 denotes a hands-free communication device. It is the main body.

  Here, the hands-free call is a call means that enables a user to make a call with a call partner without holding a mobile phone or a handset.

  The headset 4 according to the present embodiment is a wireless headset wirelessly made by Bluetooth communication (Bluetooth is a standard for wireless network communication using radio waves), and is connected to a network device via a BTM (Blue Tooth Module) or the like. Is possible.

  A BTM is a module that includes a wireless antenna, wireless communication module, CPU, memory, etc., and the memory is equipped with firmware for executing communication processing, and is standard with SPI (Serial Peripheral Interface), USB interface, etc. Has an interface.

  The hands-free communication device main body 5 is attached to an instrument panel or the like of a vehicle.

  A mobile phone holder (not shown) for connecting the mobile phone of the hands-free call device body 5 and the earphone microphone terminal (not shown) of the mobile phone 3 are connected by a dedicated cable C and attached to the instrument panel ( The mobile phone 3 is attached to a device (not shown).

  The power source of the hands-free communication device of this embodiment is connected to the power supply line for the in-vehicle electrical equipment from the back side of the instrument panel.

  FIG. 2 is a block diagram showing a device configuration of the hands-free communication device of this embodiment.

  As shown in FIG. 2, the hands-free communication device body 5 includes a communication unit 6, a non-volatile memory 7, a BTM (Blue Tooth Module) 8 for headset communication, a mobile phone connection unit 9, The interrupt switching unit 10 and the control unit 11 are configured.

  The communication unit 6 is connected to a communication line for CAN communication of the vehicle body, and enables CAN communication with in-vehicle electrical equipment.

  In this embodiment, the communication unit 6 is used when acquiring the warning lamp display state of the meter device 1 by performing CAN communication with the meter control unit.

  In addition to the control program for controlling the control unit 11, the memory 7 is equipped with a voice database of voices notified to the driver and the other party.

  The BTM 8 of this embodiment is provided for transmitting and receiving audio signals to and from the headset 4. The audio captured by the microphone of the headset 4 is converted into audio data by the headset 4 and is converted into audio data as BTM 8. Received.

  Further, when audio data is transmitted by the BTM 8, the audio data is converted into a radio signal by the BTM 8 and output. The radio signal is received by the BTM built in the headset 4 and is transmitted as audio to the headset 4. Output from the speaker.

  The mobile phone connection unit 9 of this embodiment is configured by an ADC (AD converter), a DAC (DA converter), or the like.

  The ADC of the mobile phone connection unit 9 converts an analog audio signal output from the mobile phone 3 from the other party to a digital audio signal.

  On the other hand, the DAC of the mobile phone connection unit 9 converts the digital audio signal input to the mobile phone connection unit 9 into an analog signal.

  The call / interrupt switching unit 10 enables a hands-free call by relaying voice signals of the call between the mobile phone 3 and the headset 4, or a call between the mobile phone 3 and the headset 4. The voice data is output to the driver 2 via the headset 4 and to the other party via the mobile phone 3.

  The control unit 11 is mainly configured by a microcomputer including a CPU (Central Processing Unit), and includes a RAM that provides a working memory area when executing a control program and the like.

  The control unit 11 mainly controls the communication unit 6, the memory 7, the BTM 8, etc., and determines whether to perform a hands-free call or voice output based on the vehicle state information acquired from the communication unit 6. Determine and control the call / interrupt switching unit 10.

  When the vehicle is normal, the control unit 11 relays the voice signal of the call between the mobile phone 3 and the headset 4 by the call / interrupt switching unit 10, and when an abnormality occurs in the vehicle, the memory 7 Appropriate voice data is selected from the voice database stored in, and the call / interrupt switching unit 10 outputs a report voice to the headset 4 from the call / interrupt switching unit 10, A notification voice is output from the call / interrupt switching unit 10 via the mobile phone 3.

<Control flow>
FIG. 3 is a flowchart showing the overall processing flow of the control unit 5 according to the hands-free call device of the present invention. Here, the overall processing is processing that occurs mainly when turning on or off the power of the hands-free communication device.

  S. In 1-1, the power of the hands-free communication device is turned on, and the entire process is started. Proceed to 1-2.

  S. In 1-2, the display state of the warning light of the meter device 1 is acquired via the communication unit 6 and the vehicle network, and the control unit 11 determines whether or not a vehicle abnormality warning has occurred, If no abnormal warning has occurred, S.I. If the process proceeds to 1-3a and an abnormal warning has occurred, the S.E. Proceed to 1-3b.

  S. In 1-3a, a telephone call process, which will be described later, is performed. Proceed to 1-4.

  S. In 1-3b, the call is interrupted by the call / interrupt switching unit 10, and the S.P. Proceed to 1-4.

  S. In 1-4, it is determined whether or not the power of the hands-free communication device is turned off. If the process proceeds to 1-5 and is not turned OFF, S.I. Return to 1-2.

  Through such an overall process, when a vehicle abnormality warning occurs when the hands-free call device is turned on, the hands-free call becomes invalid.

  4 is a flowchart showing a flow of the above-described call processing (S.1-3a in FIG. 3).

  S. In 2-1, the process is started and S.P. Proceed to 2-2.

  S. In 2-2, a call is started. When the call is started, S.M. 2-3a and S.I. The process 2-3b is executed simultaneously.

  S. In 2-3a, a hands-free call process, which will be described later, is performed. Proceed to 2-4.

  S. In 2-3b, a vehicle abnormality monitoring process to be described later is performed. Proceed to 2-4.

  If a vehicle abnormality occurs during a hands-free call, an interruption process is performed on the hands-free call process by the vehicle abnormality monitoring process, and at the same time as the call is interrupted by the call / interrupt switching unit 10, the headset 4 And voice data to the mobile phone 3.

  S. In 2-4, when the call is finished and the call is finished, S.P. 2-3a and S.I. The processing of 2-3b ends at the same time. Proceed to 2-5.

  S. In 2-5, the process ends.

  By such a call process, the abnormality of the vehicle is monitored simultaneously with the start of the call, and when an abnormality occurs, an interruption process is immediately performed.

  5 is a flowchart showing a flow of the above-described vehicle abnormality monitoring process (S.2-3b in FIG. 4).

  S. In 3-1, processing is started, and S.P. Proceed to 3-2.

  S. In 3-2, communication by the communication unit 6 is started. Proceed to 3-3.

  S. 3-3, a communication request is made to the meter control unit of the meter device 1 via the communication unit 6. Proceed to 3-4.

  S. 3-4, the vehicle abnormality warning information is acquired from the meter control unit of the meter device 1, and the S.E. Proceed to 3-5.

  S. In 3-5, S.M. Based on the vehicle abnormality warning information acquired in 3-4, it is determined that the vehicle state is “no abnormality”, “engine abnormality”,. Proceed to 3-6.

  S. In 3-6, S.I. 3-5 is made to correspond to the vehicle state determined in 3-5, and this numerical data is used as warning data. Proceed to 3-6.

  Specifically, as shown in the table of FIG. 6, vehicle status and warning data such as “no abnormality” if the warning data is “0”, “engine abnormality warning” if the warning data is “3”, etc. The numerical value of 1 is made to correspond one-to-one.

  S. In 3-7, S.I. The warning data defined in association with the vehicle state in 3-6 is issued. Proceed to 3-8.

  S. In 3-9, the process ends.

  By such vehicle abnormality monitoring processing, the state of the vehicle is associated with warning data as numerical data.

  7 is a flowchart showing a flow of the above-described hands-free call processing (S.2-3a in FIG. 4).

  S. In 4-1, the process is started and S.P. Proceed to 4-2.

  S. In 4-2, a normal hands-free call is performed. Proceed to 4-3. During a hands-free call, the vehicle abnormality monitoring process is performed at regular time intervals. 5 (processing of FIG. 5) is performed.

  S. 4-3, it is determined whether or not the call is ended. If the call is not terminated, go to S.4-4. Return to 4-2.

  Vehicle abnormality monitoring processing 5 confirms that the vehicle is abnormal, an interruption process occurs in the hands-free call (S.4-2). Proceed to 6.

  S. In S.6, S.M. 5 is determined based on the warning data issued in step S5. Proceed to 7.

  S. 7, a beep sound for notifying the caller that an abnormality has occurred in the vehicle is reported through the headset 4. Proceed to step 8.

  S. 8, the call is interrupted by the call / interrupt switching unit 10. When the call is interrupted, S.C. 9a and S.E. The process of 9b is executed simultaneously.

  S. In 9a, the warning voice data corresponding to the type of the warning data and the corresponding voice data are acquired from the voice database, and the voice of the voice data is notified to the driver through the headset. Proceed to 10. The table of FIG. 8 shows warning data, warning voice data corresponding to the type of warning data, and corresponding voice data.

  S. In 9b, the notification voice data is acquired from the voice database, and the voice of the voice data is notified to the call partner through the mobile phone. Proceed to 10.

  S. 10, S. 9a and S.E. The process of 9b is repeated several times. Proceed to 11.

  S. 11, the driver and the other party are notified of the end of the call. Proceed to 12.

  S. 12, after the call is finished and after a certain period of time has elapsed, a hands-free call is possible regardless of the vehicle state. Proceed to 4-4 to end the process.

  In this way, the control unit 11 terminates the hands-free call after transmitting the warning voice data and the countermeasure voice data for a predetermined time or a predetermined number of times to the driver 2, and further enters the vehicle state after a certain time has passed. Regardless, hands-free calling is possible.

  By such hands-free call processing, when no vehicle abnormality occurs, a normal hands-free call is possible, and when a vehicle abnormality occurs, the situation is notified to the caller and the other party by voice. .

<how to use>
When the driver 2 gets into the car, the mobile phone connection terminal of the hands-free communication device main body 5 of this embodiment attached to the instrument panel on the driver's seat side and the earphone microphone terminal of the mobile phone 3 are dedicated. Connect with the cable C and put the mobile phone into the mobile phone holder attached to the instrument panel.

  Then, the driver 2 starts traveling of the automobile after wearing the headset 4.

  Assume that a ring tone sounds while the car is running.

  Since the ringing tone is sounded, the driver 2 presses the incoming call button of the mobile phone 3 to place the mobile phone 3 in the incoming state.

  The audio output signal of the mobile phone 3 is transmitted to the handsfree call device main body 5 via the dedicated cable C.

  Inside the hands-free call device body 5, the audio output signal of the mobile phone 3 is input to the mobile phone connection unit 9, converted into a digital signal, and output as a radio signal from the BTM 8 via the call / interrupt switching unit 10. Is done.

  The radio wave signal output from the BTM 8 is received by the headset 4, converted into voice by the main body of the headset 4, and the voice of the other party can be heard from the speaker of the headset 4 by the driver 2.

  On the other hand, the voice of the driver 2 is converted into a voice signal by the microphone of the headset 4, converted into a digital signal in accordance with the Bluetooth standard by the BTM in the main body of the headset 4, and output as a radio wave signal.

  This radio signal is sent to the BTM 8 of the hands-free communication device body 5 and converted into a digital signal based on the Bluetooth standard, converted into an analog signal at the mobile phone connection unit 9, and sent to the mobile phone 3 via the dedicated cable C. It is output and sent to the other party as voice by the mobile phone 3.

  As described above, in the hands-free call device according to the present embodiment, the hands-free call device can be normally communicated with the call partner using the headset 4 though the hands-free call device body 5 is used.

  Note that a signal conversion method based on the Bluetooth standard and a headset for hands-free communication compliant with the Bluetooth standard are already known in the art, and detailed description thereof will be omitted.

  By the way, it is assumed that an abnormality has occurred in the engine while the driver 2 is making a hands-free call.

  At this time, an engine abnormality warning lamp provided in the meter device 1 of the instrument panel is turned on. The lighting of the engine abnormality warning light is controlled by the meter control unit of the meter device 1.

  In the hands-free call device of the present embodiment, the hands-free call device main body 5 and the meter control unit are connected by the communication unit 6 and various warning lights (inter-vehicle distance warning) that are controlled to be turned on by the meter control unit. Lighting information of a lamp, an engine failure warning light, an oil abnormality warning light, a tire pressure abnormality warning light, and the like.

  This lighting information is detected and determined by the control unit 11 of the hands-free call device main body 5 as vehicle abnormality information, and corresponds to the abnormal state determined from the voice database constructed in the nonvolatile memory 7. Audio data is selected.

  At this time, the selected voice data is composed of warning voice data and corresponding voice data, and now the engine has an abnormality, so the warning voice data is a voice saying "An abnormality has occurred in the engine". The corresponding voice data is voice data corresponding to a voice “Please stop the vehicle at a safe place and request repair”.

  Then, simultaneously with the lighting of the engine abnormality warning light, the warning voice data and the corresponding voice data are repeated several times, output to the BTM 8 via the call / interrupt switching unit 10, converted into a digital signal in accordance with the Bluetooth standard, and the radio signal Is output as

  The radio signal output from BTM8 is received by headset 4 and converted to sound by the body of headset 4. “An engine error has occurred. Stop the vehicle in a safe place and request repairs. Please send a voice message to the driver 2.

  At this time, simultaneously with the lighting of the engine abnormality warning light, the notification voice data is repeated several times, and is output to the mobile phone connection unit 9 via the call / interrupt switching unit 10, converted into an analog signal, and the dedicated cable C Is output to the mobile phone 3 and sent to the other party as voice by the mobile phone 3. Notification voice data “The call will be terminated to ensure safe driving” is sent from the mobile phone to the other party.

<Function and effect>
When a vehicle abnormality occurs during a hands-free call while driving, the control unit 11 blocks the call between the driver 2 and the other party by the call / interrupt switching unit 10, and the vehicle abnormality at that time The voice of the warning voice data that informs the state is output from the headset 4 worn by the driver 2, so that even when the driver 2 is in a call, the driver 2 can immediately recognize the vehicle state by this voice. The driver 2 can be urged to respond to the vehicle abnormality.

  Then, the control unit 11 transmits the voice of the notification voice data explaining the reason why the call is cut off to the mobile phone of the call partner through the mobile phone 3, so that the call partner who feels anxiety because the call is cut off In addition to giving a sense of security, the driver 2 can concentrate on dealing with vehicle abnormalities without worrying about disrespect for the other party.

  In addition, since the control unit 11 transmits to the driver 2 the voice of the corresponding voice data that explains the coping method together with the voice of the warning voice data that informs the vehicle abnormality state, the driver can cut off a sudden call or deal with driving. Without being confused, you can concentrate on dealing with vehicle abnormalities with peace of mind.

  Further, after transmitting the voice of the warning voice data and the voice of the corresponding voice data to the driver 2 for a predetermined time or a predetermined number of times, the control unit 11 ends the hands-free call device of the present invention, and after completion, After a lapse of time, normal hands-free calling is possible again regardless of the vehicle state. Therefore, when the driver 2 calls the dealer or the repair shop in accordance with the instructions for dealing with the vehicle abnormality, the hands-free state is established. It is possible to make a call quickly without necessarily stopping the vehicle.

<Constitution>
The description will focus on the parts different from the first embodiment, and the description of the same or the same parts as the first embodiment will be omitted.

  FIG. 9 is a configuration diagram of the hands-free call device according to the present embodiment, and FIG. 10 is a block diagram illustrating a device configuration of the hands-free call device according to the present embodiment.

  The difference from the first embodiment is that information on the lighting state of the warning light provided in the meter device 1 is not acquired, but information such as an ABS controller and an engine controller connected to a vehicle network such as CAN communication is used. Is to get.

<Function and effect>
In the first embodiment, the information that can be acquired is limited to the information on the lighting state of the warning light provided in the meter device 1, whereas the vehicle information is acquired from various controllers connected to the vehicle network. Therefore, it is possible to acquire more detailed vehicle information than in the first embodiment, and to notify the caller of more detailed vehicle information.

<Constitution>
The description will focus on the parts different from the first and second embodiments, and the description of the same or identical parts as the first and second embodiments will be omitted.

  FIG. 11 is a configuration diagram of the hands-free call device according to the present embodiment, and FIG. 12 is a block diagram illustrating a device configuration of the hands-free call device according to the present embodiment.

  The difference from the first embodiment and the second embodiment is that the information on the lighting state of the warning light provided in the meter device 1 is obtained directly from the meter control unit of the meter device 1 without using a vehicle network such as CAN communication. It is.

  Specifically, for example, the signal may be directly branched from the lighting signal of the warning lamp, or the branched signal may be converted into a serial signal and transmitted. Alternatively, the branch signal may be transmitted by Bluetooth communication.

  Further, in the hands-free call device of the present embodiment, the mobile phone 3a having the Bluetooth communication function is used, and communication between the mobile phone 3a and the hands-free call device main body 5 is also performed by wireless communication by Bluetooth communication. To.

  Accordingly, the internal configuration of the hands-free call device main body 5 is also different from that of the first and second embodiments, and the mobile phone provided in the hands-free call device main body 5 of the first and second embodiments. The connection unit 9 and the call / interrupt switching unit 10 are not provided in the hands-free call device main body 5 of the present embodiment.

  This is because BTM8 is capable of simultaneous multi-channel communication, so the voice data packet from the mobile phone 3a to the headset 4 and the voice data packet from the headset 4 to the mobile phone 3a are combined into one BTM8. In addition, by managing transmission / reception of this voice data packet under the control of the control unit 11, it is the same as the mobile phone connection unit 9 and the call / interrupt switching unit 10 of the first and second embodiments. Can be operated.

<Function and effect>
Since the warning lamp lighting information as the vehicle abnormality information is directly acquired from the meter control unit of the meter device 1, the information discrimination processing as in the first embodiment or the second embodiment is not necessarily required and the load on the control unit 11 is not necessarily required. Not only through the vehicle network, but also the burden on the vehicle network can be reduced.

  Further, since the connection between the mobile phone 3a and the hands-free call device main body 5 is performed wirelessly by Bluetooth communication, it is more convenient than the hands-free call device main body 5 of the first and second embodiments.

  As mentioned above, although the Example of embodiment which concerns on this invention has been explained in full detail with reference to drawings, the concrete structure is not limited to this embodiment, and the design of the grade which does not deviate from the summary of this invention Modifications are included in the present invention.

  In addition, although the headset for Bluetooth standard-compliant hands-free calling was used as the receiving means of this embodiment, the driver's voice is converted into a voice signal, and the voice signal from the hands-free calling device is converted into voice. Anything can be used. For example, a headset using infrared communication may be used, or a wired type connected by a cord. Or you may use the microphone and speaker which were provided in the vehicle interior.

  Similarly, any means for communicating with the vehicle network may be used. For example, LAN communication may be used.

  Further, the call / interrupt switching unit 10 may be software or hardware. In the case of hardware, a switching element using a semiconductor element or an electromagnetic relay may be used.

1 is a configuration diagram of a hands-free call device according to Embodiment 1. FIG. It is a block diagram which shows the apparatus structure of the hands-free call apparatus of Example 1. FIG. It is a flowchart figure which shows the flow of the whole process of the control part which concerns on the hands-free call apparatus of this invention. It is a flowchart figure which shows the flow of the telephone call process (S.1-3a of FIG. 3) of the control part which concerns on the hands-free call apparatus of this invention. It is a flowchart figure which shows the flow of the vehicle abnormality monitoring process (S.2-3b of FIG. 4) of the control part which concerns on the hands-free call apparatus of this invention. It is a table | surface which shows an example of matching with a vehicle state and the numerical value of warning data. It is a flowchart figure which shows the flow of the hands-free call process (S.2-3a of FIG. 4) of the control part which concerns on the hands-free call apparatus of this invention. It is the table | surface which showed an example of warning data, warning audio | voice data corresponding to the kind of warning data, and corresponding | compatible audio | voice data. It is a block diagram of the hands-free call device of Example 2. It is a block diagram which shows the apparatus structure of the hands-free call apparatus of Example 2. FIG. It is a block diagram of the hands-free call device of Example 3. It is a block diagram which shows the apparatus structure of the hands-free call apparatus of Example 3.

Explanation of symbols

3 Mobile phone (telephone)
6 Communication unit 2 Driver 7 Memory (memory means)
9 Mobile phone connection (phone connection means)
4 Headset (voice input / output means)
8 BTM (voice input / output means)
10 Call / interrupt switching unit (call / interrupt switching means)
11 Control unit (control means)

Claims (4)

A hands-free call device for making a hands-free call using a telephone in a car,
A communication unit for transmitting and receiving information to and from an in-vehicle device provided in the automobile;
Storage means for storing voice data to be notified to the driver of the car and the call partner of the driver;
Telephone connection means for transmitting and receiving audio signals to and from the telephone;
Voice input / output means for inputting / outputting call voice between the driver and the call partner;
The hands-free call is made possible by relaying the voice signal of the call between the telephone and the voice input / output means, or the operation between the telephone and the voice input / output means is interrupted A call / interrupt switching means for switching whether to output the voice data to a person or the other party,
When a vehicle abnormality occurs during a hands-free call while driving, the call / interrupt switching means cuts off the call between the driver and the other party to alert the vehicle abnormality state A hands-free call device comprising control means for outputting the voice data from the voice input / output means.   2. The hands-free call device according to claim 1, wherein the control means transmits voice data explaining the reason why the call is cut off to the telephone of the other party through the telephone through a general telephone line.   3. The hands according to claim 1, wherein the control means transmits to the driver voice data for explaining a coping method for the vehicle abnormality state together with voice data notifying the vehicle abnormality state. Free call device.   The control means terminates the hands-free call after transmitting the warning voice data and the voice data explaining the coping method to the driver for a predetermined time or a predetermined number of times, and further, a fixed time has elapsed. The hands-free call device according to any one of claims 1 to 3, wherein a hands-free call is possible regardless of a vehicle state.

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