JP2003174676A - Hands-free speech system and mobile phone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hands-free speech system that can facilitate handling of each of a plurality of mobile phones when the mobile phones are brought into a vehicle to make hands-free speeches. <P>SOLUTION: When the mobile phone 4 makes wireless communication with other mobile phones 5, 6 through Bluetooth communication sections 18, 21, 22 when a hands-free speech is made available through a hands-free speech unit 3 mounted on a vehicle 2 to set the mobile phones 4, 5 to a drive mode. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a hands-free call system for connecting a hands-free call device mounted on a vehicle and a mobile phone carried in the vehicle to perform a hands-free call, and a system thereof. Mobile phone.

[0002]

Conventionally, a hands-free communication device mounted on a vehicle is used to perform a hands-free communication in a state where a vehicle occupant carries a one-to-one wired connection with a mobile phone brought into the vehicle compartment. Has become. At present, Bluetooth (registered trademark), which is a type of short-distance wireless communication system, is discussing a standard for a hands-free profile for vehicles. In that standard as well, a hands-free communication device and a mobile phone are It is premised that the wireless connection is one-to-one.

However, in recent years, there are not a few users who own a plurality of mobile phones and use them for business or private purposes. Therefore, when a vehicle occupant brings multiple mobile phones into the passenger compartment, if any one of them is selected for a hands-free call while driving, the other mobile phones are set to the drive mode respectively. Operation or turning off the power is required.

It is also possible to wirelessly connect the hands-free communication device and the mobile phone in a one-to-many manner by independently arranging the above-mentioned Bluetooth hands-free profile, but the function becomes complicated and the profile part It is expected that the software will become larger and that it will not be compatible with other models. Therefore,
It is not a very realistic measure.

By the way, when a hands-free call is possible while riding, for example, depending on the passenger,
It is also assumed that an incoming call may occur from a person who does not want to hear the telephone conversation. Conventionally, the measures to deal with such cases are to confirm who the caller is by referring to the display of the hands-free communication device, etc. There was nothing else. However, such a response is obviously unnatural, and there is a problem that it gives a passenger a feeling of distrust.

The present invention has been made in view of the above circumstances, and a first object of the present invention is to easily handle each mobile phone when a plurality of mobile phones are brought into a vehicle for a hands-free call. (EN) Provided is a hands-free call system that can be used for mobile phones, and a mobile phone used in the system.

A second object of the present invention is to provide a hands-free call system capable of smoothly avoiding a call when an incoming call is received from a person who does not want the passenger to hear a telephone conversation. , And a mobile phone used in the system.

[0008]

According to the hands-free call system of the present invention, when any one of the plurality of portable telephones becomes capable of making a hands-free call through the hands-free call device, The mobile phone performs wireless communication with other mobile phones via the short-distance wireless communication means, and is set to disable a call made via the other mobile phones.

That is, even if a plurality of portable telephones are brought into the vehicle, the vehicle occupant makes settings one by one to disable the portable telephones that are not the target of the hands-free conversation via the hands-free conversation device. Even if it does not exist, the setting is collectively performed by the mobile phones that are the target of the hands-free call. Therefore, convenience can be improved.

According to the hands-free call system of the second aspect, the mobile phone set in the hands-free call enabled state sets the other mobile phones in the drive mode. In other words, the person who made a call to the mobile phone set to the drive mode recognizes that the telephone cannot be called by the announcement, and therefore gives up the call at that time or the other party If you know your phone number, you will try to call another phone number. Therefore, it is possible to reliably perform only hands-free communication.

According to the hands-free call system of the third aspect, the mobile phone set in the hands-free call enabled state sets the other mobile phones in the call transfer mode. Therefore, if the incoming call is transferred to the mobile phone that is the target of the hands-free call, the call can be made at that time, so that the hands-free call can be reliably made even if there is an incoming call on any of the mobile phones. it can.

According to the hands-free call system of the fourth aspect, the mobile phone in a state where the hands-free call is enabled makes any call that is present in the list of caller numbers for which the hands-free call is prohibited. Set to disable hands-free calling when an incoming call is received from the person number. Therefore, if an incoming call from a caller who does not want passengers in the vehicle to hear a hands-free call is registered in the list, the call can be avoided smoothly. it can.

According to the hands-free call system of the fifth aspect, the list holds information on fellow passengers who prohibit hands-free calls for each caller number. If the mobile phone of the passenger is equipped with the same type of short-range wireless communication means, the mobile phone of the hands-free call performs wireless communication with the mobile phone of the passenger through the short-range wireless communication means. When the passenger information is obtained and a call is received from the caller number corresponding to the passenger, the hands-free call is set to be disabled.

That is, the passengers who do not want to hear a hands-free call are generally determined relatively by the relationship with the caller. When the mobile phone of the fellow passenger is equipped with the same type of short-distance wireless communication means, it is possible to easily obtain the information for identifying the fellow passenger by the short-distance wireless communication.

According to the hands-free call system of the sixth aspect, the mobile telephone handsets when there is an incoming call from any of the caller numbers existing in the list of caller numbers for which the hands-free call is prohibited. Set to disable free calls. Therefore, if an incoming call from a caller who does not want passengers in the vehicle to hear a hands-free call is registered in the list, the call can be avoided smoothly. it can.

According to the hands-free call system of the seventh aspect, the mobile phone sets the drive mode to disable the call. That is, the person who makes a call to the mobile phone recognizes that the phone cannot be called by the announcement, and therefore gives up the call at that time. Therefore, it is possible to surely disable the hands-free call.

According to the hands-free call system of the eighth aspect, the mobile phone sets the message mode to disable the call. Therefore, the person who made the call to the mobile phone recognizes that the call cannot be made on the phone by an announcement on the network side and gives a message if necessary, so the call at that point is abandoned. . Therefore, also in this case, the hands-free call can be surely disabled.

According to the hands-free call system of the ninth aspect, the list holds information of fellow passengers who prohibit hands-free calls for each caller number. If the mobile phone of the passenger is equipped with the same type of short-range wireless communication means, the mobile phone of the hands-free call performs wireless communication with the mobile phone of the passenger through the short-range wireless communication means. When the passenger information is obtained and a call is received from the caller number corresponding to the passenger, the hands-free call is set to be disabled.

That is, a passenger who does not want to hear a hands-free call is generally determined relatively by the relationship with the caller. When the mobile phone of the fellow passenger is equipped with the same type of short-distance wireless communication means, it is possible to easily obtain the information for identifying the fellow passenger by the short-distance wireless communication.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the overall configuration of a hands-free call system. The hands-free call system 1 includes a hands-free device 3 mounted on a vehicle 2 and, for example, three mobile phones 4 (A), 5 brought into a passenger compartment by an occupant of the vehicle 2.
(B) and 6 (C).

FIG. 2 is a functional block diagram showing the electrical configuration of the hands-free device 3 and the mobile phone 4 as a representative. The hands-free device 3 is configured by electrically connecting a control unit 7 mainly including a microcomputer to an operation switch 8 including a hook switch, a voice switching unit 9, and a Bluetooth communication unit (short-range wireless communication means) 10. Has been done. An antenna 10a is connected to the Bluetooth communication unit 10. The operation switch 8 is provided with various keys for starting, ending, or holding a call. A microphone 11 for transmission and a speaker 12 for reception are connected to the voice switching unit 9.

In the mobile phone 4, a control unit 13 mainly composed of a microcomputer is connected to a telephone communication unit 14 for performing processing relating to telephone communication, a voice switching unit 15, a display 16 and a keypad 17, and Blueto
An oth communication unit (short-range wireless communication means) 18 is electrically connected and configured. A microphone 19 and a speaker 20 are connected to the voice switching unit 15. Antennas 14a and 18a are connected to the telephone communication unit 14 and the Bluetooth communication unit 18, respectively. The Bluetooth communication unit 18 performs short-range wireless communication conforming to the Bluetooth communication standard.

In the above structure, the mobile phone 4 is connected wirelessly to a base station (not shown) and communicates with the mobile phone 20 of the other party who makes a call through the telephone network 19 connected to the base station. You can Then, as the mode of the call by the mobile phone 4, the mobile phone 1
There are a handset call process for making a call on the main body and a hands-free call process for making a call using the hands-free device 3, which are configured to be selectively performed.

The other mobile phones 5 and 6 have basically the same structure as described above, and as shown in FIG.
It has oth communication units (short-range wireless communication means) 21 and 22. Then, the hands-free device 3 and the mobile phones 4 to 6
Form a Bluetooth piconet. In this case, it is assumed that the mobile phone 4 is set as a master and the other devices are set as slaves.

Next, the operation of this embodiment will be described with reference to FIG. FIG. 3 is a sequence showing a schematic processing content of Bluetooth communication performed between the handsfree device 3 and the mobile phones 4 to 6. In the “inquiry” of the synchronization establishment phase, the Bluetooth communication unit 18 of the mobile phone 4, which is the master, searches for a slave having any function in the vicinity. That is, the hands-free device 3, the mobile phones 5 and 6 which have received the IQ packet transmitted from the mobile phone 4 side, have their own Bluetooth.
Bluetoot assigned to the communication unit 10, 21, 22
The h address and the device class indicating the function of the device (device) are returned (replied) by an FHS packet. Therefore, the mobile phone 4
By performing this search, it is recognized that the hands-free device 3 and the mobile phones 5 and 6 are present around itself.

Then, the Bluetooth communication section 18 of the mobile phone 4 shifts to the communication connection phase ("connection", "data transfer") to perform function setting for each slave. That is, the setting for executing the hands-free call is performed with the hands-free device 3 so that the voice data can be transmitted.

The mobile phone 4 also gives instructions to the other mobile phones 5 and 6 to set themselves in the drive mode. Those who make a call to the mobile phones 5 and 6 set to the drive mode will hear a message such as "I am currently driving a car. Sorry, please call back later."

After that, the occupant of the vehicle 2 is operated by the portable telephone 4
Calls can only be made via. And, it is not necessary to maintain the Bluetooth piconet between the mobile phones 5 and 6. Therefore, the mobile phone 4 disconnects the communication link with the mobile phone 4 so that the slave mobile phones 5 and 6 are separated from the piconet.

As described above, according to the present embodiment, when the mobile phone 4 becomes a state in which a hands-free call made through the hands-free call device 3 mounted on the vehicle 2 becomes possible, the other mobile phone 5 is used. , 6 by wireless communication with the Bluetooth communication units 18, 21, 22 to set the mobile phones 4, 5 to the drive mode.
Therefore, even when the occupant of the vehicle 2 brings the three mobile phones 4 to 6 into the vehicle 3, the hands-free communication device 3
Even if the settings for disabling the mobile phones 5 and 6 that are not the target of the hands-free call via the telephone are made one by one, the setting is automatically performed by the mobile phone 4 that is the target of the hands-free call. Therefore, the convenience can be improved.

Then, the caller who has made a call to the mobile phones 5 and 6 set in the drive mode recognizes from the announcement that the call cannot be made on those phones 5 and 6, so that the call at that time is made. Give up or
When the telephone number of the mobile phone 4 is known, a call using that telephone number is tried. Therefore, it becomes possible to reliably carry out only hands-free communication.
When the connection between the mobile phone 4 and the hands-free device 3 is disconnected in a normal procedure, the drive mode set in the mobile phones 5 and 6 is released.

(Second Embodiment) FIGS. 4 and 5 show a second embodiment of the present invention. FIG. 4 is a functional block diagram showing the configuration of the hands-free call system. The hands-free call system 31 includes a hands-free device 33 installed inside a vehicle 32 and a mobile phone 34.

The hands-free device 33 includes a control unit 35 mainly composed of a microcomputer, an operation switch 36 including a hook switch, a voice switching unit 37 and a Blue.
The tooth communication unit (short-range wireless communication means) 38 is electrically connected. An antenna 38a is connected to the Bluetooth communication unit 38. The Bluetooth communication unit 3
Reference numeral 8 denotes short-range wireless communication conforming to the Bluetooth communication standard, and in this case, it is assumed that the slave is set. The operation switch 36 is provided with various keys for starting, ending, or holding a call. A microphone 39 for transmission and a speaker 40 for reception are connected to the voice switching unit 37.

In the mobile phone 34, a control unit 41 mainly composed of a microcomputer is connected to a telephone communication unit 42 for performing processing relating to telephone communication, a voice switching unit 43, a display 44 and a keypad 45, and Blue
A tooth communication unit (short-range wireless communication means) 46 is electrically connected and configured. A microphone 47 and a speaker 48 are connected to the voice switching unit 43. Antennas 42a and 46a are connected to the telephone communication unit 42 and the Bluetooth communication unit 46, respectively. In addition, Bluetooth
In this case, the communication unit 46 is set to be the master.

In the above-mentioned structure, the mobile phone 34 is connected to a base station (not shown) by radio and communicates with the mobile phone 50 of the other party who makes a call through the telephone network 49 connected to the base station. You can And
The modes of the call by the mobile phone 34 include a handset call process for making a call using the main body of the mobile phone 34 and a hands-free call process for making a call using the hands-free device 33, which can be selectively performed. It is configured to be able to.

The control unit 41 of the mobile phone 34 has a built-in memory 41a, and the call prohibition list 51 is stored in the memory 41a. The call prohibition list 51 is
For example, when the user of the mobile phone 34 performs a hands-free call process in the passenger compartment of the vehicle 32, if a call is expected from a partner who does not want the passenger to hear the content of the conversation, the caller of the partner is called. Number For example, "090-XXXXX
"X-XXXXX" is registered in advance.

Next, the operation of the second embodiment will be described with reference to FIG. Blue of the master mobile phone 34
In the “inquiry” of the synchronization establishment phase, the tooth communication unit 46 searches for what kind of function the slave has around. That is, the hands-free device 3 that has received the IQ packet transmitted from the mobile phone 34 side.
The FHS indicates the Bluetooth address assigned to its own Bluetooth communication unit 38, the device class indicating the function of the device (device), and the like.
Reply (reply) by packet. Therefore, the mobile phone 34 recognizes that the hands-free device 33 exists around itself by performing this search.

Then, the mobile phone 34 shifts to the communication connection phase ("connection", "data transfer") and sets the function for each slave. That is, the setting for performing the hands-free call is performed with the hands-free device 33 so that the voice data can be transmitted.

In FIG. 5, the control unit 41 of the mobile phone 34 is
It is a flowchart which shows the content of the process mainly performed when an incoming call occurs. The control unit 41 waits until an incoming call is received by the mobile phone 34 (step A1), and when the incoming call is received (“YES”), the caller number is stored in the memory 4
It is determined whether or not it is registered in the call prohibition list 51 of 1a (step A2).

In step A2, if the caller number is not registered in the call prohibition list 51 ("NO"),
The control unit 41 performs a hands-free communication process (step A3). That is, Bluetoot between hands-free device 33
h The audio data is transmitted via the communication units 46 and 38. On the other hand, the sender number is, for example, “090- ×××× − ×××
When it is "x" and is registered in the call prohibition list 51 (step A2, "YES"), the control unit 41 prohibits hands-free communication by setting itself in the drive mode (step A4). So in this case the caller
For example, you will hear a message such as "I am currently driving a car. I'm sorry, please call back later." You will give up the call at that point.

As described above, according to the second embodiment, when there is an incoming call from any of the caller numbers existing in the call prohibition list 51, the mobile phone 34 sets itself in the drive mode and hands. Make free calls impossible. Therefore, when an incoming call from a caller who does not want the passengers of the vehicle 32 to hear a hands-free call is registered, the caller number is registered in the call prohibition list 51 to make the call smooth. Can be avoided.

Then, since the caller recognizes that the telephone cannot be called on the telephone 34 by the announcement of the portable telephone 34, he / she gives up the telephone call at that time. Therefore, it is possible to surely disable the hands-free call. The set drive mode is canceled by the arrival of a calling number that is not registered in the call prohibition list 51.

(Third Embodiment) FIGS. 6 to 9 (and FIG. 4)
Shows a third embodiment of the present invention. The same parts as those of the second embodiment are designated by the same reference numerals and the description thereof will be omitted. Only different parts will be described below. In the third embodiment, the vehicle 3
There are multiple occupants in 2 and each has their own mobile phone 34 '.
It is assumed that (A), 52 (B) and 53 (C) are in possession.

In the mobile phone 34 ', the call prohibition list 51 stored in the memory 41a in the second embodiment is
It is replaced with the call prohibition list 54. As shown in FIG. 7, the call prohibition list 54 according to the third embodiment includes persons (eg, mobile phone numbers of X, Y, Z) who may be in the vehicle 32 and persons X, Y, Z. Corresponding to, call the phone number of the person you do not want to hear the content of the call, the mobile phone 3
The user 4'registers in advance. The call prohibition list 54 has X, Y, and
An area for storing a flag that is set according to whether Z is actually riding in the vehicle 32 is provided.

The structure of the mobile phones 52 and 53 is basically the same as that of the mobile phone 34 ', but the call prohibition list 54 is used.
Does not hold. In addition, each has a built-in Blueto
It is assumed that the oth communication units (short-range wireless communication means) 55 and 56 are both set as slaves. The hands-free device 33 and the mobile phones 34'52, 53 described above constitute a hands-free communication system 57.

Next, the operation of the third embodiment will be described with reference to FIGS. 8 and 9. FIG. 8 is a flowchart showing the control contents centering on the control unit 41A and the Bluetooth communication unit 46 of the mobile phone 34 '. In the same manner as in the second embodiment, the Bluetooth communication unit 46 of the mobile phone 34 ′ that is the master, in the “inquiry” of the synchronization establishment phase
It is searched for what kind of function the slave has around (step B1, see FIG. 9). Then, the mobile phone 34 'carries out this search, so that the hands-free device 33 and the mobile phones 52 and 53 are provided around itself.
Recognize that exists.

Then, the control section 41A and the Bluetooth communication section 46 shift to the communication connection phase and make settings so that the hands-free communication with the hands-free device 33 is possible (step B2, "YES" → Step B
4) With respect to the mobile phones 52 and 53, the telephone numbers assigned to the respective phones 52 and 53 are acquired (step B5, "YES" → step B6, see FIG. 9).

If the hands-free device 33 does not exist (step B2, "NO"), the portable telephone 34 'is used alone for handset communication (step B).
3). If the other telephones 52 and 53 do not exist (step B5, "NO"), the process proceeds to step B9 described later.

The control unit 41A determines whether or not the numbers of the mobile phones 52 and 53 obtained in step B6 correspond to those registered in the call prohibition list 54 (step B7). In this case, for example, when a number corresponding to X in the call prohibition list 54 is obtained, as shown in FIG.
The on-board flag corresponding to is set (step B
8). Then, the process proceeds to step B9, and stands by until an incoming call is made to the mobile phone 34 '. If there is no corresponding number in the call prohibition list 54 in step B7 ("NO"), the process proceeds to step B9 without setting the onboard flag.

When the mobile phone 34 'receives an incoming call (step B9, "YES"), the control section 41A determines whether or not the calling number is subject to call prohibition (step B10). That is, in this case, if the call prohibition target number “090- ×××× − ××××” corresponding to the fellow passenger X (“YES”), the control unit 41A sets itself to the drive mode (step). B12). If it is not the call prohibition target number ("NO"), the hands-free call processing is performed via the hands-free device 33 (step B11).

As described above, according to the third embodiment, the mobile telephone 34 'holds the information of fellow passengers who prohibit hands-free calling for each caller number in the call prohibition list 54, and the information of the vehicle 32 is stored. From passengers' mobile phones 52, 53
The respective telephone numbers are acquired via the Bluetooth communication units 46, 55 and 56. Then, when there is an incoming call from the caller ID corresponding to the fellow passenger, it sets itself in the drive mode and disables hands-free calling. That is, it is general that the fellow passenger who does not want to hear a hands-free call is relatively determined by the relationship with the caller. Therefore, with such a configuration, it becomes possible to appropriately avoid the call depending on the relationship between the passenger and the caller.
The set drive mode is canceled by the incoming call of the calling number that is not registered in the call prohibition list 54.

The present invention is not limited to the embodiments described above and shown in the drawings, but the following modifications or expansions are possible. The communication connection between the mobile phone and the hands-free device does not necessarily need to be made by Bluetooth, but may be made by a wired system. Bl for short-range wireless communication
The wireless communication is not limited to uetooth, and any wireless communication can be used as long as it can perform wireless communication at a short distance of several meters to 100 meters. First
In the embodiment, after the mobile phone 4 sets the mobile phones 5 and 6 in the drive mode, the settings for making a hands-free call with the hands-free device 3 may be performed.
Further, after setting the mobile phones 5 and 6 in the drive mode, they may be made to stand by in the constant power consumption mode.

Alternatively, the mobile phones 5 and 6 may be set to the incoming call transfer mode so that the incoming call is transferred to the mobile phone 4. With such a configuration, even when an incoming call is received by the mobile phones 5 and 6, it becomes possible to reliably make a call via the mobile phone 4 at that time. Further, the mobile phones 5 and 6 may be set to the message mode or the power may be turned off. There may be two or four or more mobile phones. The configuration of the first embodiment may be combined with the configurations of the second and third embodiments. However, when the configurations of the third embodiment are combined, it is premised that a mobile phone held by a fellow passenger (another person) is present separately.

In the second embodiment, the mobile phone 34 may reject incoming calls. In the second embodiment,
When the communication connection between the hands-free device 33 and the mobile phone 34 is performed by a wired system, the Bluetooth communication units 46, 3
6 is unnecessary. In the third embodiment, the mobile phone 3
4'may reject incoming calls. In the third embodiment, the mobile phone 34 'may be set to the message mode. In the third embodiment, there may be two mobile phones or four or more mobile phones. When the occupants (drivers) of the vehicles 32 bring in a plurality of mobile phones in the passenger compartment, the configuration of the third embodiment may be combined with the configuration of the first embodiment.

[Brief description of drawings]

FIG. 1 is a first embodiment of the present invention and is a diagram showing an overall configuration of a hands-free call system.

FIG. 2 is a functional block diagram showing an electrical configuration of a handsfree device and a mobile phone.

FIG. 3 is a sequence diagram showing a schematic process content of Bluetooth communication performed between the hands-free device and each mobile phone.

FIG. 4 is a functional block diagram showing a configuration of a hands-free call system according to a second embodiment of the present invention.

FIG. 5 is a flowchart showing the contents of processing performed by the control unit of the mobile phone mainly when an incoming call occurs.

FIG. 6 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 7 is a diagram showing an example of a call prohibition list.

FIG. 8 is a flowchart showing the control contents centering on the control unit and the Bluetooth communication unit of the mobile phone.

FIG. 9 is a view corresponding to FIG.

[Explanation of symbols]

1 is a hands-free call system, 2 is a vehicle, 3 is a hands-free device, 4 to 6 are mobile phones, 10, 18, 21,
22 is a Bluetooth communication unit (short-range wireless communication means), 31
Is a hands-free call system, 32 is a vehicle, 33 is a hands-free device, 34 and 34 'are mobile phones, 38 and 46.
Is a Bluetooth communication unit (short-distance wireless communication means), 51 is a call prohibition list, 52 and 53 are mobile phones, 54 is a call prohibition list, 55 and 56 are Bluetooth communication units (short-distance wireless communication means), and 57 is hands-free. A call system is shown.

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5K027 AA11 AA16 HH03 HH08 HH14                       HH23                 5K036 AA05 AA07 JJ05 KK09                 5K067 AA34 BB03 BB04 DD11 EE02                       EE10 EE16 FF13 FF23 FF25                       FF27 FF32 FF36 FF38 HH11                       HH22

Claims (10)

[Claims] 1. A hands-free communication device mounted on a vehicle, and a plurality of mobile phones equipped with short-range wireless communication means, wherein any one of the plurality of mobile phones performs communication via the hands-free communication device. When the hands-free call becomes possible, the mobile phone performs wireless communication with another mobile phone via the short-range wireless communication means so that a call made via the other mobile phone is disabled. Hands-free call system characterized by setting. 2. The hands-free call system according to claim 1, wherein the mobile phone set to enable the hands-free call sets the other mobile phones in a drive mode. 3. The hands-free call system according to claim 1, wherein the mobile phone in the hands-free call enabled state sets the other mobile phones in the call transfer mode. 4. The mobile phone in a state where hands-free calling is possible holds a list of caller numbers for which hands-free calling is prohibited. From any caller number existing in the list. The hands-free call system according to claim 1, wherein the hands-free call is set to be disabled when an incoming call is received. 5. The list holds information on fellow passengers who prohibit hands-free calling for each caller number, and mobile phones that are in a state where hands-free calling is possible,
When the mobile phone of the fellow passenger is equipped with the same type of short-range wireless communication means, the information of the fellow passenger is obtained by performing wireless communication with the mobile phone of the fellow passenger through the short-range wireless communication means. 5. The hands-free call system according to claim 4, wherein when a call is received from a caller number corresponding to the passenger, the hands-free call is disabled. 6. A hands-free call device mounted on a vehicle, and a mobile phone for making a hands-free call via the hands-free call device, wherein the mobile phone is subject to hands-free call prohibition. A hands-free call system, which holds a list of caller numbers, and sets such that a hands-free call is disabled when there is an incoming call from any caller number existing in the list. 7. The hands-free call system according to claim 6, wherein the mobile phone disables a call by setting itself in a drive mode. 8. The hands-free call system according to claim 6, wherein the mobile phone disables a call by setting itself in a message mode. 9. The mobile phone includes short-distance wireless communication means, and the list holds information of fellow passengers who prohibit hands-free calling for each caller number. Is equipped with the same type of short-range wireless communication means, the information of the fellow passenger is obtained by performing wireless communication with the mobile phone of the fellow passenger through the short-range wireless communication means, and 9. The handsfree call system according to claim 6, wherein the handsfree call is set to be disabled when there is an incoming call from a corresponding caller ID. 10. A mobile phone which is used in the hands-free call system according to claim 1.