JP2008300960A - Car-mounted radio device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a car-mounted radio device in which a slave unit or a hands-free terminal device is easily and inexpensively added to a radio device chassis and a hand set which are connected with a wire, as the occasion demands. <P>SOLUTION: The hand set 4 includes a relay control section 17 having a function of relaying sounds and data from the slave unit 6 and the hands-free terminal device 7 assuming that the slave unit 6 and the hands-free terminal device 7 is added in the future, and a low power radio device 22 realizing a wireless communication with the slave unit 6 or the hands-free terminal device 7 added. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an in-vehicle wireless device having a handset connected to a wireless device main body by wire.

  As shown in FIG. 1, the conventional wireless communication system includes a plurality of portable terminal devices 2a and 2b that are carried by a person between the base station 1 and an in-vehicle wireless terminal device mounted on a vehicle. 3a and 3b are communicable. In the in-vehicle wireless devices 3a and 3b, communication is performed by connecting a handset having a voice / data input / output function and a wireless device main body by wire (for example, see Patent Document 1).

JP 2007-5848 A

  However, in the case of a conventional in-vehicle wireless device, if it becomes necessary to add a handset or a hands-free terminal device, the main body of the in-vehicle wireless device must be re-developed in order to make it possible to use them each time. This redevelopment has been problematic in terms of time and cost. At the same time, since it is necessary to add large parts such as connection terminals, there is a concern that the main body of the in-vehicle wireless device becomes large.

  An object of the present invention is to provide an in-vehicle wireless device that can easily and inexpensively add a handset or a hands-free terminal device.

  In order to achieve the above object, an in-vehicle wireless device according to the present invention includes a wireless device body that performs wireless communication with a base station, and a handset that is wired to the wireless device body, and transmits and receives with the wireless device body. In the in-vehicle wireless device configured to input and reproduce voice and data with the handset, a relay control unit having a relay function for relaying voice and data by wireless communication to the wireless device main body is added in the handset. A low-power wireless device that performs wireless communication with a slave unit or a hands-free terminal device is provided.

  The in-vehicle wireless device according to the present invention includes a low-power wireless device capable of wireless communication and a relay control unit having a relay function in a handset wired to the in-vehicle wireless terminal device. When it is necessary to add a terminal device, simply install a low-power wireless device capable of wireless communication with the handset's low-power wireless device on these handset and hands-free terminal devices. Wireless communication between the handset, the handset and the hands-free terminal device becomes possible without newly developing the side, and the expansion can be realized simply and inexpensively. Accordingly, the development period can be shortened and the development cost can be reduced as compared with the conventional case.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a radio communication system according to an embodiment of the present invention.
The wireless communication system includes portable wireless terminal devices 2a and 2b that are carried and used by a person, and in-vehicle wireless terminal devices 3a and 3b that are used by being mounted on a vehicle such as an ambulance. Configured to do. The in-vehicle wireless terminal devices 3a and 3b in this wireless communication system include a wireless device main body 3 as shown in FIG. 2, a handset 4 with a low-power wireless device with a relay function as described later, and a built-in low-power wireless device. It consists of a handset 6 and a hands-free terminal device 7 with a built-in low-power wireless device. The wireless device 3 and the handset 6 are connected by a wire 5, and audio data is coded and transmitted / received via this wire 8. Yes. On the other hand, the handset 5, the handset 6, and the hands-free terminal device 7 are wirelessly communicated.

FIG. 3 is a block configuration diagram showing a specific configuration example of the wireless device main body 4 and the handset 5.
The wireless device body 3 is formed with a portable wireless device accommodating portion 8 having a communication control unit 14 and a portable wireless device connection recognizing portion 15, and a removable portable wireless device 9 is accommodated in the portable wireless device accommodating portion 8. Yes. The portable wireless device 9 includes an operation unit 10, a control unit 11, a microphone 12, a speaker 13, and the like, and is connected to a wireless device function indicated by the wireless device control unit 16 and the like through a transmission path 23. The communication control unit 14 provided in the portable wireless device accommodation unit 8 performs communication between the control unit 11 of the portable wireless device 9 and the wireless device control unit 16, and also recognizes the connection of the portable wireless device provided in the portable wireless device accommodation unit 8. The unit 15 detects whether the portable wireless device 9 is housed in the portable wireless device housing unit 8 or is removed and used, and notifies the control unit 16 of the detected state.

  On the other hand, the handset 4 is connected to the wireless device main body 3 via a wire 5 and controls the operation of the relay or the handset itself, and also determines a relay, the details of which will be described later, and performs a control for the relay. The speaker 18, the LCD 19, a press switch for performing transmission, and a key button for performing dial transmission, an input key 20 for performing operations necessary for transmission and reception of the in-vehicle wireless device, and input / output of calls. For this purpose, a microphone 21 and a low-power wireless device 22 such as Bluetooth are provided.

  The portable wireless device connection recognition unit 15 detects that the portable wireless device 9 is housed in the portable wireless device housing unit 8, and transmits the detection result to the wireless device control unit 16 of the in-vehicle wireless device. The radio control unit 16 that has received the detection result transmits an accommodation state signal to the control unit 11 of the portable radio 9 via the communication control unit 14 based on the detection result, and is stored in the memory unit in the control unit 11. The presence or absence of matching unique information is detected, and emission of radio waves from the antenna of the portable radio main body 3 is prohibited based on the detection result, and emission of radio waves from the antenna of the in-vehicle radio is permitted. As a result, the handset 4 connected to the in-vehicle wireless device main body 3 can be used, and a necessary operation of the input key 20 can be executed for the transmission / reception operation of the in-vehicle wireless device. At the same time, voice can be input / output from the microphone 21 and the speaker 18 necessary for making a call.

  On the other hand, when the portable wireless device 9 is removed from the portable wireless device accommodation unit 8, the portable wireless device connection recognition unit 15 detects that the portable wireless device 9 has been removed from the portable wireless device accommodation unit 8, and this detection The result is transmitted to the radio control unit 16 of the in-vehicle radio. The wireless device control unit 16 that has received the detection result prohibits the emission of radio waves from the antenna of the wireless device body 3. On the other hand, the control unit 11 of the portable wireless device 9 permits emission of radio waves from the portable wireless device 9 and uses the operation unit 10, the microphone 12, the speaker 13, and the like included in the portable wireless device 9. It is possible to perform outgoing operations and calls necessary for communication from the Internet.

  The in-vehicle wireless device having such a configuration is mounted on an ambulance or the like and is used as a business radio. In addition to the normal usage pattern, for example, communication between the driver's seat side and the treatment room side is possible. There is a usage form. For this purpose, a handset 6 or a hands-free terminal device 7 that can communicate with the handset 4 is used. Next, this configuration will be described with reference to the block diagram shown in FIG.

  The in-vehicle wireless device handset 4 is configured in anticipation of such an increase in the future. That is, as described above, the handset 4 has a function of relaying voice and data from these handset and hands-free terminal devices in anticipation of the case where a handset and hands-free terminal devices are added in the future. 17 and a low-power wireless device 22 capable of wireless communication with the added handset and the hands-free terminal device. In addition to the control described above, the relay control unit 17 detects a wireless communication signal from the handset 6 or the hands-free terminal device 7 and relays communication with the handset 6 or the hands-free terminal device 7. I have to.

  The handset 6 to be added simultaneously with the use of the handset 4 or to be added in the future includes a control unit 23, a speaker 24, an LCD 25, an input key 26, a microphone 27, and a small device such as Bluetooth. The low-power wireless device 28 is configured to be capable of wireless communication with the low-power wireless device 22 of the handset 4. Similarly, the hands-free terminal device 7 includes a control unit 29, a speaker 30, an LCD 31, an input key 32, a microphone 33, and a low power wireless device 34 such as Bluetooth. The device 34 is configured to be capable of wireless communication with the low power wireless device 22 of the handset 4.

  As described above, since the relay control unit 17 and the low-power wireless device 22 are added as the handset 4 in advance, the slave unit 6 and the hands-free terminal device 7 can be easily added as necessary. In the handset 4, in addition to the input / output of data and voice using the input key 20 and the microphone 21 as before, wireless communication between the handset 6 and the hands-free terminal device 7, the wireless device body 3 and the handset 6, and the hands. Relay communication between the free terminal devices 7 is possible.

  The voice and data received and demodulated by the wireless device main body 3 are relayed by the relay control unit 17 of the handset 4 connected by the wire 5, and then the slave device 6 and the hands-free device via the wireless communication from the low-power wireless device 22. It can be played back by the terminal device 7. Further, when voice or data input from the LCD 25, 31, the input keys 26, 32, and the microphones 27, 33 is wirelessly transmitted from the low power wireless devices 28, 34 by the slave unit 6 or the hands-free terminal device 7, this is transmitted. Received by the low-power wireless device 22 of the handset 5. It is discriminated by the relay control unit 5d provided in the handset 5, relayed to the radio main body 4 by the relay function, and modulated and transmitted by the radio main body 4.

  The in-vehicle wireless device having such a handset 4 is mounted on an ambulance or the like and is used as a business wireless device. For example, in order to communicate between the driver's seat side and the treatment room side, the slave device 6 or the hands-free device is used. Even when the terminal device 7 needs to be added, the slave unit is configured to be able to perform wireless communication with the handset 4 as described above without newly developing or designing a radio main unit as in the prior art. 6 or the hands-free terminal device 7 need only be added, and the expansion work can be easily performed. Moreover, since new development and design of the radio main body is not required as in the prior art, it can be configured at low cost.

  The in-vehicle wireless device according to the present invention is not limited to the configuration shown in FIG. 3 and can be applied to other configurations.

It is a schematic block diagram which shows the radio | wireless communications system using the vehicle-mounted radio | wireless machine by this invention. It is a block block diagram which shows the vehicle-mounted radio by one embodiment of this invention. It is a block block diagram which shows the principal part of the vehicle-mounted radio | wireless machine shown in FIG. It is a block block diagram which shows the other principal part of the vehicle-mounted radio | wireless machine shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base station 2a, 2b Portable radio | wireless terminal apparatus 3a, 3b Car-mounted radio | wireless machine 3 Radio | wireless machine main body 4 Handset 5 Wired 6 Sub-unit 7 Hands-free terminal apparatus 17 Relay control part 22, 28, 34 Low power radio | wireless apparatus

Claims (1)

  A wireless device that performs wireless communication with a base station, and a handset connected to the wireless device by wire, and configured to input and play voice and data transmitted / received by the wireless device using the handset In the in-vehicle wireless device, wireless communication between the relay control unit having a relay function for relaying voice and data by wireless communication to the wireless device main body and the additional handset or hands-free terminal device in the handset is performed. An in-vehicle wireless device provided with a low-power wireless device for performing the operation.

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