JPH0591039A - Portable radio terminal equipment and on-vehicle radio terminal equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce cost by reducing expensive coaxial curl cords and operating parts, and to reduce weight and installation location. [Structure] A mobile radio terminal device 100 includes an antenna 10 and a radio circuit unit 2 required for a mobile device of a mobile communication system.
0, the control unit 30, the operation unit 40, and a switching unit 5 for switching the transmission signal and the reception signal input / output to / from the operation unit 40 to either the control unit 30 or the external interface terminal 60.
Has 0. An in-vehicle adapter 200, which is combined with the mobile wireless terminal device 100 as an in-vehicle wireless terminal device, has an in-vehicle antenna 70 and a wireless circuit unit 80 similar to those of the mobile wireless terminal device 100.
Also, it has a control unit 90, which operates when mounted on a vehicle. However, the in-vehicle wireless terminal device is operated by the operation unit 40, and the ID information is also supplied from the control unit 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable wireless terminal device used as a mobile device of a mobile communication system such as a car telephone system and an in-vehicle wireless terminal device for the same purpose including the portable wireless terminal device.

[0002]

2. Description of the Related Art Conventionally, a mobile telephone terminal system is required as a mobile device in an automobile telephone system having a wireless line as a main transmission line and a mobile telephone system having a wired line as a main transmission line. To use a mobile device on a vehicle in these systems, this portable wireless terminal device is connected to an in-vehicle adapter installed in the vehicle, and a radio frequency signal is transmitted and received between the in-vehicle antenna and the communication partner station. ..

Such a conventional portable radio terminal device will be described with reference to a block diagram of FIG. 3 which is assumed to be a mobile device of a car telephone system.

The antenna 10 of the portable radio terminal device 100A
Converts the transmission signal a into a radio frequency signal and sends it to the base station of the car telephone system, and converts the radio frequency signal radiated from the base station into the reception signal b. Wireless circuit section 20A
Is controlled by the control unit 30 to generate the transmission signal a and process the reception signal b. The control unit 30 controls call connection (calling connection and call receiving connection), communication, and the like with the base station. The operation unit 40 has an input / output interface unit with the user of the portable wireless terminal device 100A, and is connected to the control unit 30 to input / output control signals associated with call processing and communication control with the control unit 30. .. The external interface terminal 60A is arranged in the housing of the mobile wireless terminal device 100A, and is an external interface of the wireless circuit unit 20A, the control unit 30, and the operation unit 40, that is, the mobile wireless terminal device 100A.
This is an interface to an in-vehicle adapter or the like that is connected when the vehicle is mounted. In addition to this, the mobile wireless terminal device 100A usually includes a battery package (not shown).

The radio circuit section 20A includes a duplexer 21, a transmitter 22, a synthesizer 23, a receiver 24 and an antenna switch 25. The antenna switch 25 is
One end is connected to the duplexer 21, and one terminal to be switched is connected to the antenna 10 and the other terminal is connected to the coaxial terminal 64 of the external interface terminal 60A. The antenna switch 25 is used for the mobile wireless terminal device 10.
When 0A is used alone, it is connected to the antenna 10, and when the mobile wireless terminal device 100A is mounted in a vehicle, it is connected to an in-vehicle adapter (not shown) via the interface terminal 60A, and the in-vehicle antenna ( (Not shown). The transmission unit 22 creates the transmission signal a from the transmission signal c and the control signal e from the control unit 30.
The reception unit 24 processes the reception signal b and generates a reception signal d and a control signal f to be output to the control unit 30. The synthesizer unit 23 outputs the local oscillation signal g of the transmitter 22 and the receiver 24. The duplexer 21 distributes / combines the transmission signal a and the reception signal b having different frequency components. The combination terminal of the duplexer 21 is connected to one end of the antenna switch 25, and the transmission signal a created by the transmission unit 22 is converted into a radio frequency signal by the antenna 10 or the vehicle-mounted antenna via the duplexer 21 and is transmitted to the base station. Sent out. On the contrary, the reception signal b from the antenna 10 or the vehicle-mounted antenna is input to the reception unit 24 via the duplexer 21. Transmitter 22, receiver 24, and synthesizer 23
Selects a specific frequency channel or turns on / off a transmission carrier according to a control signal e input from the control unit 30.
Do the action.

The control section 30 includes a logic control section for controlling the radio circuit section 20A to control call connection, communication, etc., and also includes a microprocessor (CPU), ROM, RAM,
EEPROM, wireless circuit unit 2 for call connection with base station
It includes an encoder / decoder for serial data (control signals e, f) exchanged with 0A. EEPRO
M is an ISN such as an ESN (electrical serial number) and a telephone number assigned to each of the portable wireless terminal devices 100A.
In addition to D information, a plurality of types of parameters necessary for call connection are stored, and these are read / written by the logic control unit. It also receives the transmission signal c from the operation unit 40 and sends it to the wireless line unit 20A, and receives the reception signal d from the wireless circuit unit 20A and sends it to the operation unit 40.

The operation unit 40 includes a transmitter 41 that outputs a transmission signal c and a receiver 42 that receives the reception signal d. These are used when the portable radio terminal device 100A is used alone. It In addition, the operation unit 40 includes a key operation unit for inputting a control input signal by the user of the portable wireless terminal device 100A, a callee telephone number input from the key operation unit, a call time, a remaining amount of the battery 3, and the like. An LCD display unit and the like for displaying various messages under the control of the control unit 30 are included.

Terminal 6 of the external interface terminal 60A
Reference numeral 4 is connected to the antenna switch 25 of the wireless circuit section 20A and serves as an input / output terminal for the transmission signal a and the reception signal b which are high frequency signals. The terminal 65 receives all control signals and voice signals (sending signal c and receiving signal d) exchanged between the control unit 30 and the operation unit 40 and the optional equipment except the transmission signal a and the reception signal b. Includes output terminals.

FIG. 4 shows the portable wireless terminal device 100 described above.
It is a system block diagram of the vehicle-mounted wireless terminal device which mounts A in a vehicle and uses it in combination with the vehicle-mounted adapter 300 mounted in the vehicle.

Instead of the transmitter 41 and the receiver 42 of the portable wireless terminal device 100A, the in-vehicle adapter 300 can be used by the user when the portable wireless terminal device 100A is mounted in the vehicle so that the user can use this in-vehicle wireless terminal device in a hands-free manner. A microphone 302 and a speaker 303 to be used are connected. Although not shown, the power supply voltage converter includes a power supply voltage conversion unit that converts the power supply from the vehicle into the power supply voltage of the mobile wireless terminal device 100A. External interface terminal 60A of mobile wireless terminal device 100A and in-vehicle adapter 300
The connector 301 installed in the housing is a curl cord 31 with a coaxial line including a coaxial line for transmitting a high frequency signal.
Connected by 0. Curl cord with coaxial 31
0 transmits the above-mentioned transmission signal a, reception signal b, voice signal and a plurality of control signals.

When the in-vehicle wireless terminal device of FIG. 4 is used, the in-vehicle adapter 300 sends an in-vehicle / portable mode identification signal to the portable wireless terminal device 100A. Then, the switch terminal of the antenna switch 25 is the external interface terminal 6
Switch to the 0A side. Then, the transmission signal a from the portable wireless terminal device 100A passes through the curl code with coaxial 310 and the in-vehicle adapter 300, and the booster 3 which is an optional device.
It is led to 20, amplified by this, and transmitted to the communication partner station as a radio frequency signal from the vehicle-mounted antenna 330 installed in the vehicle. The received signal b from the vehicle-mounted antenna 330 is input to the vehicle-mounted adapter 300 without being affected by the booster 320, and is input to the wireless circuit unit 20A of the mobile wireless terminal device 100A via the coaxial curl cord 310. In the hands-free operation, the transmission signal c is input from the microphone 302 to the control unit 30, and the reception signal d is input from the control unit 30 to the speaker 303.
At this time, the transmitter 41 and the receiver 42 of the operation unit 40 are turned off.

FIG. 5 is another system configuration diagram of a conventional vehicle-mounted wireless terminal device.

The in-vehicle adapter 200A has a wireless circuit section 8 having substantially the same function as the wireless circuit section 20A shown in FIG.
0 and a control unit 90A having almost the same function as the control unit 30
Have and. Further, the vehicle-mounted antenna 70 has the same function as the vehicle-mounted antenna 330 shown in FIG. This in-vehicle adapter 200A is the portable wireless terminal device 1 shown in FIG.
00A has almost the same function except that the operation unit 40 is omitted. Therefore, the in-vehicle adapter 200A does not need to transmit and receive the transmission signal a and the reception signal b, which are high frequency signals, to and from the connected portable wireless terminal device 100B. For this reason, the portable wireless terminal device 100B is not provided with the antenna switch 25, and the curl code with a coaxial cable 310 for transmitting a high frequency signal is not necessary. However, this in-vehicle wireless terminal device is provided with an operating unit 400 of the portable wireless terminal device 100B, that is, an operating unit 400 having substantially the same function as the operating unit 40 of the portable wireless terminal device 100A. It is a part.

When the in-vehicle wireless terminal device of FIG. 5 is used, the wireless circuit portion of the portable wireless terminal device 100B is turned off and the wireless circuit 80 of the in-vehicle adapter 200A is used. At this time, since the control unit 90A of the in-vehicle adapter 200A is used, the control unit and the operation unit of the mobile wireless terminal device 100B are basically not operated, but only the ID information is transmitted from the control unit to the in-vehicle adapter 200A.

[0015]

The first example of the conventional portable wireless terminal device described above requires a curl cord with a coaxial line for transmitting a high frequency signal between the portable wireless terminal device and the vehicle-mounted adapter. Therefore, there is a drawback that the cost is increased and the weight of the vehicle-mounted wireless terminal device is increased.

In the first example of the conventional portable wireless terminal device, both the portable wireless terminal device and the in-vehicle adapter need to be provided with an operation section, so that not only the cost is increased but also the in-vehicle adapter in the vehicle compartment. There was a drawback that it was necessary to secure a mounting place for.

[0017]

A portable wireless terminal device of the present invention converts a radio frequency signal received from a communication partner station into a reception signal and converts a transmission signal to be transmitted to the communication partner station into a radio frequency signal. An antenna, a receiving unit that receives and processes the received signal, a transmitting unit that creates the transmitted signal, a synthesizer unit that supplies a local oscillation signal to the receiving unit and the transmitting unit, and separates the received signal and the transmitted signal. A radio circuit unit including a duplexer to be coupled, connected to the antenna, means for receiving a reception signal on which the reception signal is processed and means for receiving a transmission signal to be created in the transmission signal, and the communication partner. A control unit for controlling call processing and communication with a station, an input / output interface unit with a user, a unit for transmitting the transmission signal, and a reception signal for receiving the reception signal. Means and an operation part including a means for inputting and outputting a control signal associated with the call processing and communication control with the control part, and a transmission signal sent from the operation part to the control part or an external unit installed in the housing. A switching unit including means for switching to and outputting from one of the interface terminals, a switching unit including means for switching the reception signal received by the operation unit to either the control unit or the reception signal from the external interface terminal, and the wireless circuit when mounted on a vehicle. Means for turning off the unit, means for operating the switching unit to switch the transmission signal and the reception signal input to and output from the operation unit to the transmission signal and the reception signal input to and output from the external interface terminal, and the control And a vehicle-mounted switching means including means for sending ID information from the unit to the external interface terminal.

The on-vehicle wireless terminal device according to the present invention is
The mobile wireless terminal device, and a mobile wireless terminal device mounted on a vehicle, the mobile wireless terminal device has an in-vehicle adapter connected by the external interface terminal, the in-vehicle adapter,
A vehicle-mounted antenna that converts a radio frequency signal received from a communication partner station into a reception signal and also converts a transmission signal to be transmitted to the communication partner station into a radio frequency signal, a reception unit that receives and processes the reception signal, and the transmission signal And a radio circuit section including a synthesizer section for supplying a local oscillation signal to the reception section and the transmission section, and a duplexer for separating / combining the reception signal and the transmission signal, and a radio circuit section connected to the vehicle-mounted antenna. A control unit for controlling call processing and communication with the communication partner station, including a means for receiving a reception signal on which the reception signal has been subjected to reception processing and a means for receiving a transmission signal to be created in the transmission signal. Including the vehicle, the operation unit of the portable wireless terminal device is used as the operation unit of the in-vehicle adapter.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a first embodiment according to the present invention.

In FIG. 1, a portable wireless terminal device 100
Is an antenna 10, a wireless circuit unit 20, a control unit 30, an operation unit 40, a switching unit 50, and an external interface terminal 6.
It has 0. Of these, the control unit 30 and the operation unit 40 have the same functions as the mobile wireless terminal device 100A in FIG. The wireless circuit unit 20 has the same function as the wireless circuit unit 20A except that the antenna switch 25 is omitted.

The switching unit 50 switches the transmission signal c transmitted from the operation unit 40 to the control unit 30 to the external interface terminal 60 when the portable wireless terminal device 100 is mounted on the vehicle, and transmits the reception signal d received by the operation unit 40. Is a switching means for switching to the reception signal d received from the external interface terminal 60. Switching of the input / output paths of the transmission and reception signals c and d by the switching unit 50 is performed by the mobile wireless terminal device 100.
When the vehicle is mounted on the vehicle, the switches S1, S2, S3 are interlocked with each other by a switching control signal input from a manual or external interface terminal 60.

That is, when the portable radio terminal device 100 is used alone (also referred to as the master mode), the transmission signal c from the operation unit 40 is sent to the control unit 30 via the terminals S33 and S31 of the switch S3 and the adder 51. The received signal d from the control unit 30 is sent to the operation unit 40 via the terminals S21 and S23 of the switch S2. On the other hand, when mounted on the vehicle, the operation unit 4
The transmission signal c from 0 is not connected to the control unit 30 because the switches S1 and S3 are off, and the terminal S of the switch S3 is not connected.
It is sent to the terminal 61 of the external interface terminal 60 via 33 and S32. Further, the reception signal d from the terminal 62 of the external interface terminal 60 is directly sent to the operation unit 40 because the terminal S21 of the switch S2 is not connected to the terminal S22 connected to the control unit 30.

As described above, the portable wireless terminal device 100 when used alone causes the control unit 30 to input and output the transmission signal c and the reception signal d which are input to and output from the operation unit 40. On the other hand, the portable wireless terminal device 100 mounted on the vehicle causes the same transmission signal c and reception signal d to be input / output to / from the department interface terminal 60.

FIG. 2 is a system configuration diagram of the second embodiment according to the present invention.

The embodiment of FIG. 2 shows an in-vehicle wireless terminal device in which the portable wireless terminal device 100 described in the embodiment of FIG. 1 is connected to an in-vehicle adapter 200.

The vehicle-mounted adapter 200 includes a vehicle-mounted antenna 70, a radio circuit section 80, and a control section 90A included in the vehicle-mounted adapter 200A described with reference to FIG. Then, when the mobile wireless terminal device 100 is mounted on the vehicle, the in-vehicle antenna 70, the wireless circuit section 80, and the control section 90 included in the in-vehicle adapter 200 are operated. However, the operation of the in-vehicle adapter 200 is performed by the operation unit 40 of the mobile wireless terminal device 100.

When the vehicle-mounted wireless terminal device is mounted on a vehicle and used (also referred to as a slave mode of the portable wireless terminal device 100), the external interface terminal 60 of the portable wireless terminal device 100 is connected to the connector 201 of the vehicle-mounted adapter 200. When connected, the in-vehicle adapter 200 operates its own wireless circuit unit 80 and control unit 90, and
An in-vehicle / portable mode identification signal is sent to the portable wireless terminal device 100. Then, the portable wireless terminal device 100 operates the ID information transmission function of the operation unit 40, the switching unit 50, and the control unit 30, but the IDs of the wireless circuit unit 20 and the control unit 30.
The parts other than the information sending function are turned off. Then, the switching unit 50 switches the route of the transmission signal c transmitted from the operation unit 40 to the external interface terminal 60 by the in-vehicle / portable mode identification signal or the manual operation and transmits the transmission signal to the in-vehicle adapter 200, and the reception signal d. Is switched to a state in which it can be received from the external interface terminal 60 connected to the in-vehicle adapter 200.

When the vehicle is mounted on the vehicle, the vehicle-mounted wireless terminal device includes the vehicle-mounted adapter 200 and the portable wireless terminal device 100.
Communication with the communication partner station is performed using the operation unit 40, the switching unit 50, the external interface terminal 60, and a part of the control unit (ID information sending function). The in-vehicle adapter 200
Has a microphone 202 and a speaker 203 for performing a hands-free operation of the in-vehicle wireless terminal device. When using these, the transmitter 41 and the receiver 42 of the operation unit 40 are turned off. .. In addition, it is of course possible to integrate the portable wireless terminal device 100 and the in-vehicle adapter 200 by directly connecting the external interface terminal 60 and the connector 201 in a plug-in manner.

[0030]

As described above, the portable wireless terminal device of the present invention has the switching unit for switching the transmission signal and the reception signal input / output to / from the operation unit to either its own control unit or the external interface terminal. It is provided. As a result, in an in-vehicle wireless terminal device that uses this portable wireless terminal device in combination with an in-vehicle adapter, it is not necessary to prepare an expensive coaxial curl cord or an overlapping operation section, which results in cost reduction and weight reduction. The effect of reducing the installation location of the overlapping circuits is great.

[Brief description of drawings]

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

FIG. 2 is a system configuration diagram of a second embodiment of the present invention.

FIG. 3 is a block diagram of a conventional portable wireless terminal device.

FIG. 4 is a system configuration diagram of a first example of a conventional vehicle-mounted wireless terminal device.

FIG. 5 is a system configuration diagram of a second example of a conventional vehicle-mounted wireless terminal device.

[Explanation of symbols]

 10 antennas 20, 20A, 80 wireless circuit unit 21 duplexer 22 transmitter unit 23 synthesizer unit 24 receiver unit 25 antenna switch 30, 90, 90A control unit 40, 400 operation unit 41 handset 42 handset 50 switching unit 51 adder 60 , 60A External interface terminals 61 to 65 terminals 70, 70, 330 In-vehicle antennas 100, 100A, 100B Portable wireless terminal devices 200, 200A, 300 In-vehicle adapter 201, 301 Connector 202, 302 Microphone 203, 303 Speaker 310 Coaxial curl cord 320 Booster S1-S3 switch

Claims (2)

[Claims] 1. An antenna for converting a radio frequency signal received from a communication partner station into a reception signal and converting a transmission signal to be transmitted to the communication partner station into a radio frequency signal,
A receiving unit that receives and processes the received signal, a transmitting unit that creates the transmitted signal, a synthesizer unit that supplies a local oscillation signal to the receiving unit and the transmitting unit, and a duplexer that separates and combines the received signal and the transmitted signal. A wireless circuit section connected to the antenna, and means for receiving a reception signal in which the reception signal has been subjected to reception processing, and means for receiving a transmission signal to be created in the transmission signal, and the communication partner station. Control unit for controlling call processing and communication, user input / output interface means, means for transmitting the transmission signal, means for receiving the reception signal, and control signals for controlling the call processing and communication An operation unit including means for inputting and outputting between the operation unit and an external interface terminal installed in the control unit or a housing for transmitting a transmission signal transmitted from the operation unit. A switching unit including means for selectively switching and transmitting, a switching unit for switching the reception signal received by the operation unit to either the control unit or the reception signal from the external interface terminal, and when the vehicle is mounted, the wireless circuit unit is turned off. And means for switching the transmission signal and the reception signal input / output to / from the operation unit by operating the switching unit to the transmission signal and the reception signal input / output to / from the external interface terminal and the ID from the control unit. An in-vehicle switching unit including a unit for sending information to the external interface terminal. 2. The portable wireless terminal device and an in-vehicle adapter mounted on a vehicle and connected to the portable wireless terminal device via the external interface terminal, wherein the in-vehicle adapter receives a wireless signal from a communication partner station. A vehicle-mounted antenna that converts a frequency signal into a reception signal and a transmission signal to be transmitted to the communication partner station into a radio frequency signal, a reception unit that receives and processes the reception signal, a transmission unit that creates the transmission signal, and A synthesizer unit that supplies a local oscillation signal to a receiving unit and a transmitting unit, and a wireless circuit unit that is connected to the vehicle-mounted antenna and includes a duplexer that separates / combines the received signal and the transmitted signal, and the received signal is received. Call processing with the communication partner station, including means for receiving the received reception signal and means for receiving the transmission signal to be created in the transmission signal And a control unit for controlling communication, wherein the in-vehicle wireless terminal device uses the operation unit of the portable wireless terminal device as the operation unit of the in-vehicle adapter when the vehicle is mounted.