JPH0613966A - Mobile radio terminal equipment - Google Patents

Abstract

PURPOSE:To provide the mobile radio terminal equipment to which a portable telephone set and a cellular telephone set are connected in which the same function and operating method as that of the portable telephone set is always realized and which is capable of communication with any system different in the way of communication for the portable telephone set and the cellular telephone set. CONSTITUTION:A CPU of a communication control section of a portable telephone set 10 has a function comprising a man-machine interface task 51 and a communication task 52. On the other hand, a CPU of a communication control section of a cellular telephone set 30 has a function comprising only a communication task 55. When the portable telephone set 10 and the cellular telephone set 30 are connected to each other, information is sent/received between the man-machine interface task 51 and the communication task 55 in the cellular telephone set 30 via an interface 57. The same interface as an interface in the portable telephone set 10 is adopted for the interface 57.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile wireless terminal device, and more particularly to a mobile wireless terminal device in which a mobile phone and a car phone are connected.

Generally, a car telephone having a man-machine interface unit fixedly connected to the inside of a car and a mobile phone in which the entire device including the man-machine interface unit and the communication control unit are portable are used in a radio frequency band and Most of the line configuration and others are the same. Therefore, in recent years, a mobile phone may be used by being connected to a car phone in order to use a transceiver and an antenna of the car phone so that a good call can be made even in an area around the service area. However, it is often requested to use the mobile phone as a single unit when used away from the car, and as a car phone when used inside the car. Therefore, the functions and operation methods should be the same for the mobile phone and the car phone. Is required.

In addition, a lot of data such as a telephone number and a name has been stored in a mobile phone. These data need to be commonly called and written when used alone or in an automobile.

Further, in both the car telephone system and the mobile telephone system, services of systems of different systems by a plurality of operators are performed in the same area, and there are competitions for fees and other services. Therefore, which system is effective depends on the area where the service is received, the area of the other party, the usage time, and the like. Therefore, when the mobile phone to be connected and the car phone are subscribed to systems of different systems, it is necessary to be able to select which of them can communicate. In addition, even if the service areas of both systems are different, it is important to be able to select the system that is providing service in the area in which it is to be used.

[0005]

2. Description of the Related Art FIG. 7 is a block diagram showing an example of a conventional mobile radio terminal device. The mobile phone 100 has a microphone 111 and a speaker 11
2 and a central processing unit (CPU) 115 for controlling the display 113 and the keyboard 114, and a communication control unit. The communication control unit includes a CPU 101, a read only memory (ROM) 102 in which a program for causing the CPU 101 to perform a required software operation is stored, and a random access memory (ROM) in which data necessary for control is written and read. RAM) 103 and electrically erasable programmable ROM (EEPROM) 104 in which nonvolatile information (for example, memory dial, ID information, etc.) is stored in advance.

A switch 116 is provided between the man-machine interface section and the communication control section, and the switch 11
By connecting 6 to the terminal A side, the man-machine interface unit and the communication control unit are connected, and information is exchanged between them. The data from the CPU 101 and the voice signal from the microphone 111 are modulated through the baseband circuit 105 and the transmission / reception unit 106 and transmitted from the antenna 107 to the base station. On the other hand, the radio signal from the base station is received and demodulated by the antenna 107 and the transmission / reception unit 106, and the received voice signal is transmitted through the baseband circuit 105 to the switch 116.
Sent to the speaker 112 through the received data
Supplied to 101.

On the other hand, the car telephone 200 has a CPU inside the car.
A communication control unit composed of 201, ROM202, and RAM203,
A transceiver 206 and an antenna 207 are fixedly provided, and a handset 220 is connected to the communication controller via a signal interface. The handset 220 is similar to the man-machine interface part of the mobile phone 100.
It includes a microphone 211, a speaker 212, a display 213, a keyboard 214 and a CPU 215. The microphone 211 is for inputting voice to be transmitted, and the speaker 212 is for outputting received voice. The display 213 displays the input from the keyboard 214 or displays based on the received data.

In this conventional device, the CPU 201 and the baseband circuit 205 in the mobile phone 200 are connected to the man-machine interface units (111 to 115) in the mobile phone 100.
CPU 101 and baseband circuit 105 in mobile phone 100
The switch 116 can be switched and connected by a switch 116. When connecting a mobile phone and a car phone, the switch 116 is connected to the B side to connect to the man-machine interface units (111 to 115) in the mobile phone 100. 200 car phones are connected.

The control function of the CPU 101 of the mobile phone 100 is composed of a man-machine interface task 301 and a communication task 302 as shown in FIG. 7, and the CPU 115 has a display keyboard control function 304 for exchanging information between them. Is defined as interface 303. On the other hand, as shown in FIG. 8, the control function of the CPU 201 in the car telephone 200 also has a man-machine interface task 401.
And a communication task 402, and the CPU 215 in the handset 220 has a display keyboard control function 404.
have.

When connecting the mobile phone 100 and the car phone 200, by connecting the switch 116 to the terminal B side, the display keyboard control function 304 and the car phone 200 by the CPU 115 in the mobile phone 100 as shown in FIG.
Information is exchanged with the man-machine interface task 401 in the interface via the interface 403. That is, in this case, the mobile phone 100 is used instead of the handset 220, and the car-phone 200 performs the man-machine interface task 401 and the communication task 402.

As another example of the conventional mobile radio terminal device, a mobile radio terminal device having a structure shown in FIG. 9 is also known. 7, those parts which are the same as those corresponding parts in FIG. 7 are designated by the same reference numerals, and a description thereof will be omitted. In FIG. 9, the transmitter / receiver 106 is a modulator 501.
, Transmitter amplifier 502, duplexer 503, receiver amplifier 504
And a demodulator 505. Further, the shared transmission / reception end of the transmission / reception duplexer 503 is connected to the movable contact piece (common terminal) of the switch 506. The terminal A of the switch 506 is connected to the antenna 107, and the terminal B is connected to the RF interface 510.

On the other hand, the car telephone 600 includes a duplexer 601,
It has at least a transmission amplifier 602, a duplexer 603, an antenna 604, and a reception amplifier 605. Transmitter / receiver 601
The transmission / reception shared end of is connected to the RF interface 510.

When the mobile phone 500 and the car phone 600 are connected and used, the switch 506 is connected to the terminal B side,
The duplexers 503 and 601 are connected via the RF interface 510 and the switch 506. As a result, at the time of transmission, the data and voice signals from the baseband circuit 105 of the mobile phone 500 are modulated by the modulator 501 and amplified by the transmission amplifier 502, and then the duplexer 503, the switch 506, the RF interface 510, the shared transmission and reception. The antenna 60 of the car telephone 600 through the device 601, the transmission amplifier 602, and the duplexer 603.
4 is wirelessly transmitted to a base station (not shown).

On the other hand, a reception signal from a base station (not shown) is received by the antenna 604 and the transmission / reception duplexer 603 of the car telephone 600, and then amplified by the reception amplifier 605 to be transmitted / reception duplexer.
Mobile phone 500 through 601 and RF interface 510
Will be entered in. The received signal is demodulated through the switch 506, the duplexer 503, the receiving amplifier 504, and the demodulator 505, and then supplied to the baseband circuit 105, the received voice is sent to the speaker 112, and the received data is sent to the CPU 115 via the CPU 101. Transferred to.

Therefore, in this conventional device, the portable telephone 500
When the mobile phone 500 and the mobile phone 600 are connected to each other, as shown in FIG. 10, the mobile phone 500 includes the man-machine interface task 301 and the communication function 302 by the CPU 101 and the CP.
The U115 has a display keyboard control function 304, while the mobile phone 600 is used as a booster having only a function of amplifying a transmission signal and a reception signal.
The F interface 510 exchanges high frequency signals.

[0016]

However, in the conventional device shown in FIG. 7, even if the mobile phone 100 and the car phone 200 are connected, the functions and operating methods are the same as when they are used alone. Must prepare a car phone 200 having a man-machine interface task 401 that matches the man-machine interface task 301 of the mobile phone 100 having various man-machine interface functions that differ for each user.

In addition, while the database of names, telephone numbers, etc. is stored in the mobile phone 100, the man-machine interface task 401 for key input is performed on the mobile phone 200 side, so when writing data, the mobile phone
It is necessary to transfer data from the mobile phone 100 to the mobile phone 100 and to transfer the data from the mobile phone 100 to the car phone 200 at the time of reading data, resulting in a slow response.

On the other hand, in the conventional apparatus shown in FIG. 9, the modulation / demodulation method and the communication control method are different when the system is different.
It can only communicate with the subscription system in the mobile phone 500.
In order to be able to communicate with both the mobile phone 500 subscription system and the car phone 600 subscription system, it is possible to share some of the communication control units and modulators and demodulators for both systems, even if they can be shared. Must have dual circuits, and must also have dual software as a communication control function.

The present invention has been made in view of the above points,
An object of the present invention is to provide a mobile radio terminal device that solves the above-mentioned problems by controlling a communication function by a car phone and a man-machine interface function by a mobile phone.

[0020]

According to a first aspect of the present invention, there is provided a mobile phone including at least a first communication control function for performing wireless communication with a base station and a man-machine interface function for operation and display, and An interface for transmitting and receiving necessary information between a car phone having a second communication control function for performing wireless communication with a base station, and a man-machine interface function of the mobile phone and a second communication control function of the car phone. Have and.

Further, in the invention according to claim 4, a mobile phone capable of communicating with the first system, a control circuit and a modulation / demodulation circuit capable of communicating with a second system different from the first system, first and second A mobile phone including a transmission / reception circuit capable of transmitting / receiving to / from any of the second systems; and a signal line interface for transmitting and receiving data and voice signals between the mobile phone and the control circuit and modulation / demodulation circuit of the mobile phone. It has an RF interface for transmitting and receiving high frequency signals between the mobile phone and the transmitting and receiving circuit of the car phone.

According to the tenth aspect of the invention, there is provided a memory for storing a mode for selecting one of the first and second systems, and the mode specified in the memory is designated. It communicates with one of the first and second systems, and if it cannot communicate with one of the first and second systems designated in the mode stored in the memory, it communicates with the other.

[0023]

According to the first aspect of the invention, the interface is operated so that necessary information is transmitted and received between the man-machine interface function of the mobile phone and the second communication control function of the car phone. Even if the man-machine interface is different between the mobile phone and the car phone, communication can always be performed with the same functions and operating methods as those of the mobile phone. Also, when connecting and using a mobile phone and car phone,
Control of key input can be performed on the mobile phone side.

In a fourth aspect of the present invention, a portable telephone capable of communicating with the first system, a control circuit capable of communicating with the second system, a modulation / demodulation circuit, and transmission / reception of both the first and second systems are possible. When used by connecting to a car telephone having a transceiver circuit, by operating the RF interface, communication can be performed in the first system by using the transceiver circuit and antenna of the car telephone, and the signal line interface operates. By doing so, communication in the second system can be performed.

According to the tenth aspect of the invention, it is possible to communicate with the first or second system selected by the user, and the first or second system can be used.
When communication is not possible with this system, communication with the other communicable second or first system can be automatically performed.

[0026]

1 is a block diagram of the first embodiment of the present invention.
In the figure, the mobile phone 10 includes a CPU 11, a ROM 12, and an RA.
A communication control unit A composed of M13 and EEPROM 14,
It comprises a baseband circuit 15, transceivers 16 and 17, a man-machine interface B having the same function as a handset, and a switch 23.

The ROM 12 stores a program for realizing the software processing of the CPU 11. RAM1
Reference numeral 3 writes and reads data necessary for software processing of the CPU 11. The EEPROM 14 is a non-volatile memory in which memory dial information such as name and telephone number, manufacturing number and other ID information and the like are stored in advance.

As is well known, the baseband circuit 15 limits the bandwidth of audio signals and data in the baseband, multiplexes them in a predetermined format, and separates them. The transmission / reception unit 16 has a conventionally known configuration including a modulator, a demodulator, a transmission amplifier, a duplexer, and the like.

The man-machine interface section B collects a voice to be transmitted and converts it into a voice signal, a speaker 19 for emitting the received voice signal, a display 20 for displaying information necessary for operation such as a telephone number and a name. , A keyboard 21 operated by a user to input data necessary for communication, and a display on the display 20 based on data input from the keyboard 21 or a CPU
It is composed of a CPU 22 that sends and receives information to and from the CPU 11.

This mobile phone 10 is operated by the switch 23.
The man-machine interface unit B in the mobile phone 10 is switched and connected to the baseband circuit 15 or the baseband circuit 35 in the car phone 30. When the car telephone 30 is used alone, it can be connected to the handset 40. Car phone 30 has CPU 31, ROM 32, R
A communication control unit comprising an AM33 and an EEPROM34,
Baseband circuit 35, transmitting / receiving unit 36, and antenna 37
Consists of.

CPU 31, which constitutes the above communication control unit,
The ROM 32, the RAM 33, and the EEPROM 34 perform the same operation as the communication control unit A in the mobile phone 10. Also,
The baseband circuit 35, the transmitter / receiver 36, and the antenna 37 are the same as the baseband circuit 15, the transmitter / receiver 1 described above.
6 and the antenna 37. However, the transmission output of the mobile phone 30 is larger than that of the mobile phone 10.

The handset 40 has the same structure as the man-machine interface section B of the mobile phone 10 and has a microphone 4
1, speaker 42, display 43, keyboard 44
And a CPU 45. When the car telephone 30 is used alone, information is transmitted and received between the CPU 45 and the CPU 31.

The control function of the CPU 11 of the mobile phone 10 is as follows.
As shown in FIG. 2, it comprises a man-machine interface task (man-machine interface function) 51 and a communication task (communication control function) 52.
The exchange of information between the two is defined as the interface 53. The CPU 22 also has a display keyboard control task 54.

On the other hand, the control function of the CPU 31 of the automobile telephone 30 includes a communication task 55 and a man-machine interface task 58. When using the automobile telephone alone, the man-machine interface 55 is the C of the handset 40.
Information is exchanged with the display keyboard control task 56 which is a control function of the PU 45. Further, when the mobile phone 10 is used by being connected, only the communication task 55 operates. When the switch 23 shown in FIG. 1 of the mobile phone 10 is connected to the terminal b side, the microphone 18 and the speaker 19 are connected to the baseband circuit 35 of the car phone 30 through the switch 23.

When the portable telephone 10 and the automobile telephone 30 are connected in this way, in this embodiment, as shown in FIG. 2, the man-machine interface task 51 of the CPU 11 of the portable telephone 10 and the CPU 31 of the automobile telephone 30 are connected. Necessary information is exchanged with the communication task 55 via the interface 57. The interface 57 is set to be the same as the interface 53 between the communication task 52 in the mobile phone 10 and the man-machine interface task 51. As described above, according to the present embodiment, unlike the conventional device, when the mobile phone 10 and the car phone 30 are connected and used, the man-machine interface task uses the man-machine interface task 51 of the mobile phone 10. Is characterized by.

Next, the operation sequence of the interface 53 of the mobile phone 10 when making a call will be described with reference to FIG. Before entering the calling operation, the communication task 52 receives the standby control channel (ch) data from the base station (step S1), and notifies the man-machine interface task 51 that the service is possible (step S2). . In this state,
When the man-machine interface task 51 receives the off-hook from the user (step S3), the communication task 52 is notified of the off-hook (step S4). When the dial information from the user is further received (step S5), the dial information is transmitted to the communication task. 52 is notified (step S6).

Upon receiving the off-hook and dial information, the communication task 52 transmits a call request to the base station (step S7). The communication task 52 that has received the line connection information from the base station that received the call request notifies the man-machine interface task 51 of the line connection,
The call state is entered (steps S8 and S9).

Thereafter, when the call ends and the man-machine interface task 51 receives the on-hook information from the user (step S10), the man-machine interface task 51 notifies the communication task 52 of the on-hook (step S11). Upon receiving the on-hook information, the communication task 52 transmits a disconnection request to the base station (step S12) and waits for a disconnection confirmation response from the base station. Upon receiving the disconnection confirmation information from the base station (step S13), the communication task 52 transmits a disconnection confirmation notification to the man-machine interface task 51 (step S14).

Next, the interface 53 of the mobile phone 10
The operation sequence when the call is received will be described with reference to FIG. The communication task 52 receives the standby control ch data from the base station (step S21) and notifies the man-machine interface task 51 that the service is available (step S).
22). After that, when the communication task 52 receives the incoming call request from the base station (step S23), it notifies the man-machine interface task 51 of the incoming call (step S2).
4).

Then, the man-machine interface task 51 sends a ringing tone to the user (step S2).
5). When the user responds to this by going off-hook, the off-hook information is sent to the man-machine interface task 51.
Is notified to the communication task 52 via (step S2).
6, S27). When the communication task 52 receives this off-hook, it sends an incoming call response to the base station (step S2).
8) Enter the call state.

When the communication task 52 receives the disconnection request information from the base station (step S29), it notifies the man-machine interface task 51 of the disconnection request information (step S30). When the man-machine interface task 51 receives the disconnection request, it sends a busy tone to the user (step S31), and when it receives an off-hook from the user (step S32), it notifies the communication task 52 of the off-hook (step S3).
3).

When the mobile phone 10 and the car phone 30 are connected, the same operation as in FIGS. 3 and 4 described above is performed between the man-machine interface task 51 and the communication task 55 via the interface 57. To do. In this case, even if the man-machine interface is different between the mobile phone 10 and the car phone 30, the same functions and operating methods as those of the mobile phone 10 can always be realized, so that a plurality of mobile phones having different man-machine interface functions can be provided. It becomes possible to connect with a car telephone 30 of a kind.

Further, in this embodiment, the man-machine interface task 5 in the portable telephone 10 controls the key input.
Since it is performed by No. 1, it is not necessary to transfer the memory dial data such as the name and the telephone number to the car telephone 30, and the response can be made faster than before.

The interface 5 in the mobile phone 10
3 and the interface 57 between the mobile phone 10 and the car phone 30 may have the same information to be transmitted / received. For example, the former uses RAM to exchange information, and the latter uses serial signals. May be used. As a result, the mobile phone 10 alone or the mobile phone 10
Can be connected to the car telephone 30 and the memory dial data of the EEPROM 14 can be shared in either case.

Next, a second embodiment of the present invention will be described. FIG. 5 shows a block diagram of the second embodiment of the present invention. In the figure, the same components as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the first embodiment shown in FIG. 1, the mobile phone 1
When 0 and the mobile phone 30 are connected, the communication control with the base station is performed only by the communication control unit in the mobile phone 30, so that the mobile phone 30 can communicate only with a system with which communication is possible. In the present embodiment, even if the mobile phone and the car phone have different communication systems, the system can communicate with any system.

In FIG. 5, the mobile phone 60 is newly provided with a switch 61 as compared with the mobile phone 10 of the first embodiment, and can communicate with the first system. The transmission / reception unit 16 in the mobile phone 60 includes a modulator 62 and a transmission amplifier 6
3, a conventionally known modulation / demodulation circuit configuration including a duplexer 64, a reception amplifier 65, and a demodulator 66.

A common terminal of the switch 61 is a duplexer 64.
Is connected to the common terminal for sending and receiving, and the terminal a is connected to the antenna 17,
The terminal b is connected to the car telephone 8 via the RF interface 72.
It is connected to a transmission / reception common terminal of a transmission / reception duplexer 87 described later in 0. The switch 61 is connected to the terminal b side when the mobile phone 60 and the car phone 80 are connected and used.

The car telephone 80 is different from the car telephone 30 in that a switch 81 and a duplexer 87 are newly provided. 5, the configuration of the transmission / reception unit 36 of FIG. 1 is divided into a modulator 82, a demodulator 83, a duplexer 84, a reception amplifier 85, and a demodulator 86 in order to facilitate the description of the present invention. The switch 81 has two interlocking switch parts, and when the terminal a is connected, the transmission output end of the duplexer 87 is connected to the transmission amplifier 8
3 and the reception input end of the duplexer 87 is connected to the output end of the reception amplifier 85.

When the terminal b is connected, the switch 81 connects the output end of the modulator 82 to the input end of the transmission amplifier 83, and connects the output end of the reception amplifier 85 to the input end of the demodulator 86. It has the same configuration as the transmitting / receiving unit 36 of the first embodiment. The mobile phone 80 can communicate with a second system different from the first system, and the modulation / demodulation characteristics of the modulator 82 and the demodulator 83 are set to the characteristics adapted to the second system.

On the other hand, the two duplexers 84 and 8
7, the transmission amplifier 83, and the reception amplifier 85 are set so as to cover both frequency bands of the first and second systems. In addition, the baseband circuit 35 in the automobile telephone 80 uses the signal line interface 71 and the switch 23.
It is connected to the microphone 18 and the speaker 19 in the mobile phone 60 via. Information can be exchanged between the CPU 11 and the CPU 31.

Thus, in this embodiment, the car telephone 80
The transmission / reception circuit (83 to 85, 87) of the car telephone 80
Modulation / demodulation circuit (82, 86) and control circuit (31 to 3)
5) and the modulation / demodulation circuits (62, 66) and the control circuits (11 to 15) in the mobile phone 60 can be switched and used.

Next, the operation of this embodiment will be described. When the mobile phone 60 and the car phone 80 are connected to communicate with the first system, the switch 23 is connected to the terminal a, the switch 61 is connected to the terminal b, and the switch 81 is connected to the terminal a side. As a result, the man-machine interface unit B of the mobile phone 60 is connected to the communication control unit A and the baseband circuit 15 via the switch 23 to send and receive information, and the transmitter / receiver unit 16 and the transmitter / receiver circuit in the mobile phone 80 are connected. R between
High frequency signal (RF signal) via F interface 72
Are sent and received.

In the car telephone 80, the RF interface 7
The transmission RF signal from the mobile phone 60 that is input to the duplexer 87 via 2 is the duplexer 87, the switch 81,
Transmission amplifier 83, duplexer 84, and vehicle antenna 3
7 to the base station of the first system. On the other hand, the RF signal from the base station of the first system is an automobile antenna 37, a duplexer 84, a reception amplifier 85, a switch 81, a duplexer 87, and an RF interface 72.
Is input to the mobile phone 60 via.

The RF signal input to the mobile phone 60 is demodulated through the switch 61, the transmission / reception duplexer 64, the reception amplifier 65 and the demodulator 66, and then input to the baseband circuit 15, where it is converted into data and voice signals. Separated and data is C
Audio signals to the PU 11 are supplied to the speaker 19 via the switch 23, respectively.

In this way, the RF interface 72 is enabled, all the circuits in the mobile phone 60 are activated, and the transmission / reception circuits 83 to 8 of the car phone 80 are also activated.
By setting 5, 87 in the operating state, communication with the first system is possible.

Next, a case where the mobile phone 60 and the car phone 80 are connected to communicate with the second system will be described. In this case, switch 23 is terminal b and switch 81
Are respectively connected to terminals b. As a result, the man-machine interface unit B in the mobile phone 60 is connected to the communication control unit in the car phone 80 and the baseband circuit 35 via the switch 23 and the signal line interface 71, respectively, for exchanging information. In the car telephone 80, the modulator 82 and the demodulator 86 are connected to the transmission amplifier 83 and the reception amplifier 85 via the switch 81.

Therefore, at the time of transmission, the voice, dial information and other data input from the man-machine interface section B of the mobile phone 60 are input to the modulator 82 through the baseband circuit 35 in the mobile phone 80. After being modulated according to the system regulations of No. 2 and converted into an RF signal, the switch 81, the transmission amplifier 83, the duplexer 8
4 and the car antenna 37 to the base station of the second system.

On the other hand, the RF from the base station of the second system
The signal is received via the automobile antenna 37, the duplexer 84, and the receiving amplifier 85, further input to the demodulator 86 via the switch 81, and is demodulated there according to the regulation of the second system. The output demodulated data and demodulated audio signal of the demodulator 86 are transmitted via the baseband circuit 35 to the CPU 31,
It is input to the speaker 19 or the like in the mobile phone 60.

In this way, the signal line interface 71 is enabled, the mobile phone 60 activates only the man-machine interface section B, and all the circuits of the automobile telephone 80 operate. Can communicate with the system.

As described above, according to the present embodiment, it is possible to communicate with both the first and second systems, and it is possible to select a system that provides services in the area where it is intended to use. Furthermore, in this embodiment, the same functions and operating methods as those of the mobile phone 60 can always be realized.

When only one of the two systems is used for communication at all times, the signal line interface 71 and the RF corresponding to the communication system are used.
Only one of the interfaces 72 need be connected.

Further, in the second embodiment, the user is allowed to select the first system or the second system to specify the mode for communication. The user uses the keyboard 21 of the mobile phone 60 or the keyboard 44 of the car phone 80 to connect to the first system, the first mode to connect only to the first system, the second mode to connect to only the second system, and the connection to the first system. Priority, third mode to connect to second system when this is not possible, second
Prioritize connection with other systems, and when this is not possible, first
Enter any of the 4th modes to connect with the system. The mode input from the keyboard 21 is C
The data is transferred from the PU 22 to the CPU 11 and stored in the EEPROM 14. Further, the mode input by the keyboard 44 is transferred from the CPU 45 through the CPU 31 of the automobile telephone 80 to the CPU 11 of the mobile telephone 60 and stored in the EEPROM 14. If the RAM 13 is a backup RAM having a backup power supply, the input mode is RAM
It may be stored in 13.

FIG. 6 shows CP at power-on and mode input.
The flowchart of the system selection process which U11 performs is shown. In the figure, in step S50, it is determined whether or not the mode stored in the EEPROM 14 is the first mode in which only the first system is connected. If it is not the first mode, it is determined in step S51 whether it is the second mode in which only the second system is connected. If it is not the second mode, step S5
At 2, it is determined whether or not the third mode is prioritizing the first system.

If the first mode is determined in step S50, or if the third mode is determined in step S52, the process proceeds to step S53, in which switch 23 is terminal a, switch 61 is terminal b, and switch 81 is The terminal a side is connected to each of the terminals to set it as a connectable mode with the first system, and it is determined in step S54 whether the first system is usable. If the first system can be used within the service area of the first system, the first system remains in that state for waiting for an outgoing call or an incoming call, and the process ends.

If the first system cannot be used outside the service area of the first system in step S54, it is determined in step S54 whether or not the first mode is a mode in which only the first system is connected. If it is not the first mode but the third mode, go to step S53
Proceed to 56.

When it is determined in step S51 that the mode is the second mode, or in step S52 other than the third mode, that is, the fourth mode.
If it is determined that the mode is the mode, the process proceeds to step S56, where the switch 23 is connected to the terminal b and the switch 81 is connected to the terminal b side to establish the connectable mode with the second system, and the second system is used in step S57. Determine if possible. When the second system can be used within the service area of the second system, the second system is put in the waiting state for the outgoing call or the incoming call and the processing is terminated.

If the second system cannot be used outside the service area of the second system in step S57, it is determined in step S58 whether or not the second mode is the one in which only the second system is connected. If it is not the second mode but the fourth mode, go to step S56
Proceed to 53. That is, the user can communicate only with the first system or the second system desired by the user by designating the first and second modes, and if it is usable by designating the third and fourth modes. When a person communicates with the desired first system or the second system and moves around the area and the desired first system or the second system becomes unavailable, the other available system is automatically used. Two systems or a first system may be in communication.

[0069]

As described above, according to the first aspect of the present invention, since the communication can always be performed by the same function and operation method as the mobile phone, the man-machine interface function of the mobile phone which is different for each user is specified for the car phone. It is possible to connect a mobile phone of each specification to a car phone of one kind of specification without having to match each other. According to the second aspect of the invention, the same interface between the man-machine interface task and the communication task in the mobile phone is provided between the mobile phone and the car phone. Even if the telephone and the car telephone are connected, communication is possible with either. According to the third aspect of the present invention, since the memory dial information storage means is provided in the mobile phone and the key input is controlled by the mobile phone, the memory dial information can be transferred to the car phone. It is unnecessary, and therefore the response can be made faster than that of the conventional device.

According to the invention described in claim 4, the first
When connecting a mobile phone having a function of communicating with the above system and a mobile phone having a function of communicating with a second system, one of a signal line interface and an RF interface between them is selected. Therefore, it is possible to selectively communicate with both the first system and the second system, and it is also possible to select a system that provides services in the area where it is used.

Further, according to the invention of claim 5, the man-machine interface unit in the mobile phone is used by the first switch for both the first and second system communication, and in the car phone. Since the transmission / reception circuit of the above can be used by the third switch during both the first and second system communication, the communication is performed by the operation method of the mobile phone during both the first and second system communication. You can

Further, according to the invention described in claim 6, only the circuit portion necessary for communication can be brought into the operating state, and according to the invention described in claims 7 and 8, the first and second systems are provided. The transmission / reception circuit of the car telephone used in any of the communication can be made simple.

Further, according to the invention of claim 9, it is possible to communicate with the system selected by the user in an area where both the first system and the second system can communicate with each other. According to this, the system selected by the user can communicate with the other system in an area where the system cannot be used, which is extremely useful in practice.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a control operation explanatory diagram of the embodiment of the present invention.

FIG. 3 is a sequence diagram for explaining a calling operation according to an embodiment of the present invention.

FIG. 4 is a sequence diagram for explaining an incoming call operation according to an embodiment of the present invention.

FIG. 5 is a configuration diagram of a second embodiment of the present invention.

FIG. 6 is a flowchart of a system selection process.

FIG. 7 is a block diagram of an example of a conventional device.

FIG. 8 is an explanatory diagram of a control operation of the conventional device of FIG.

FIG. 9 is a configuration diagram of another example of a conventional device.

10 is an explanatory diagram of a control operation of the conventional device of FIG.

[Explanation of symbols]

10,60 Mobile phone 11,22,31,45 Central processing unit (CPU) 14,34 Electrically erasable programmable ROM
(EEPROM) 15,25 Baseband circuit 16,36 Transceiver 18,41 Microphone 19,42 Speaker 20,43 Display 21,44 Keyboard 23,61,81 Switch 30,80 Car phone 37 Car antenna 40 Handset 51 Man-machine interface Task 52,55 Communication task 54,56 Display / keyboard control function 62,82 Modulator 64,84,87 Transmitter / receiver 66,86 Demodulator 71 Signal line interface 72 RF interface A Communication controller B Man-machine interface

Claims (10)

[Claims] 1. A mobile phone (1) including at least a first communication control function (52) for performing wireless communication with a base station and a man-machine interface function (51) for operation and display.
0), a car phone (30) having a second communication control function (55) for performing wireless communication with the base station, a man-machine interface function (51) of the mobile phone (10), and the car phone (30). A mobile wireless terminal device, comprising: an interface (57) for transmitting and receiving necessary information to and from the second communication control function (55) of 30). 2. The interface (57) is the first communication control function (52) in the mobile phone (10).
The mobile radio terminal device according to claim 1, wherein the mobile radio terminal device is set to the same interface as an interface (53) between the man-machine interface function (51) and the man-machine interface function (51). 3. The mobile phone (10) has a memory (14) for storing memory dial data such as name and number, and the man-machine interface function (51) controls writing / reading of the memory (14). The mobile radio terminal device according to claim 1, wherein 4. A mobile phone (60) capable of communicating with the first system, and a control circuit (31-35) capable of communicating with a second system different from the first system and a modulation / demodulation circuit (82, 8).
6) and a mobile phone (80) including a transceiver circuit (83 to 85, 87) capable of transmitting and receiving to and from the first and second systems, the mobile phone (60) and the mobile phone (80). Of the control circuit (31-35) and modulation / demodulation circuit (82, 86)
A high-frequency signal between a signal line interface (71) for transmitting and receiving data and voice signals to and from the mobile phone (60) and the transceiver circuits (83 to 85, 87) of the car phone (80). A mobile wireless terminal device comprising: an RF interface (72) for transmitting and receiving. 5. The man-machine interface unit (B) in the mobile phone (60) is provided with a baseband circuit (15) and modulation / demodulation circuits (62, 66) in the mobile phone (60) and the signal line interface (71). ) And a first switch (23) for switching connection to either one of them, and a transmitting / receiving circuit (63 to 65) in the mobile phone (60),
A second switch (61) connected to the antenna (17) of the mobile phone (60) when used alone, and to the RF interface (72) when connected to the car phone (80); , The transmission / reception circuit (83 to 8) in the car telephone (80)
5, 87), and a third switch (81) for switching and connecting the control circuit (31 to 35) and the modulation / demodulation circuit (82, 86) and the RF interface (72). The mobile radio terminal device according to claim 4. 6. When the mobile phone (60) and the car phone (80) are connected and used, the first
When communicating with this system, all the circuits of the mobile phone (60) are set to the operating state, and the man-machine interface (B) is set to the baseband circuit (15) and the modulation / demodulation circuit (62, 62) in the mobile phone (60). 66) and is connected to the transmission / reception circuit (83) of the car telephone (80).
~ 85, 87) are connected to the RF interface (72) with only the operating state, and when communicating with the second system, the mobile phone (6)
0) is connected to the signal line interface (71) with only the man-machine interface section (B) in an operating state, and all circuits in the car telephone (80) are in an operating state in the car telephone (80). The mobile radio terminal device according to claim 4, wherein the control circuit and the modulation / demodulation circuit (31 to 35, 82, 86) and the transmission / reception circuit (83 to 85, 87) are connected. 7. The transmission / reception circuit in the car telephone (80) is connected to a car antenna (37) at a common end of transmission and reception,
And a first duplexer (84) having a transmission input end and a reception output end, respectively, and the RF interface (72).
5. The mobile radio terminal device according to claim 4, further comprising at least a second duplexer (87) having a transmission / reception common end connected to the second transmission / reception end and having a transmission output end and a reception input end. 8. When communicating with the first system, the input end of a transmission amplifier (83) is connected to the second duplexer (8).
7) Connected to the transmission output terminal and the reception amplifier (85)
Is connected to the reception input end of the second duplexer (87), and when communicating with the second system, the input end of the transmission amplifier (83) is a modulator / demodulator in the car telephone (80). Connected to the modulator output of the circuit (82,86), and
The output terminal of the reception amplifier (85) is connected to the modulation / demodulation circuit (82, 8).
The mobile radio terminal device according to claim 7, wherein the mobile radio terminal device is connected to the demodulator input terminal of 6). 9. A memory (1) for storing a mode of selecting which system of the first and second systems is selected.
7. The mobile radio terminal device according to claim 6, further comprising: 4), which communicates with one of the first and second systems specified in a mode stored in the memory (14). 10. The communication system according to claim 9, wherein when communication with one of the first and second systems designated by the mode stored in the memory (14) is not possible, communication with the other is performed. Mobile wireless terminal device.