JP2002171321A - Mobile radio terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile radio terminal having high function and high portability. SOLUTION: This mobile radio terminal is composed of radio equipment 100 provided with a receiving part 103, a transmitting part 104, a demodulating part 106 and a modulating part 107 for performing radio communication with a base station and of an operating unit 200 provided with a display part 210 being an interface part with a user, a camera part 211, a microphone part 212, a speaker part 213 and a key input part 208 or the like. The terminal is operate by exchanging audio data or image data through an electric connection by means of respectively provided connectors 112 and 201 in the state of integrating both the equipment, and the audio data or image data are exchanged by the radio communication of a Bluetooth system by means of BT communication parts 110 and 203 between both the equipment in the state of separating both the equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PHS (Person
al Handyphone System) and mobile wireless terminals of mobile phone systems.

[0002]

2. Description of the Related Art As is well known, recently, PHS and PDC have been developed.
(Personal Digital Cellar) and other terminal devices are equipped with a large-sized liquid crystal display unit and are capable of displaying images and are being advanced in functions such as colorization.

Further, a terminal device that includes an electronic camera and has a function of transmitting a captured image to a communication partner and that functions as, for example, a videophone has been considered. Acces
s) It is expected to be installed in the terminal device of the next-generation mobile communication system adopting the system.

[0004] Regarding such a conventional mobile radio terminal,
This will be described with reference to FIGS. FIG. 10 shows the appearance of the mobile radio terminal, and FIG.
FIG. 10B is a front view of the mobile wireless terminal, and FIG. 10B is a side view of the mobile wireless terminal. FIG. 11 is a block circuit diagram of the mobile radio terminal.

A radio frequency signal transmitted from a base station (not shown) via a radio communication channel is received by an antenna 1 and then input to a receiving section (Rx) 3 via an antenna duplexer (DUP) 2. .

In the receiving section 3, the received radio frequency signal is mixed with a receiving local oscillation signal oscillated by a frequency synthesizer (SYN) 5 and frequency-converted into a receiving intermediate frequency signal.

The local oscillation signal oscillated by the frequency synthesizer 5 includes a signal for reception and a signal for transmission, and the frequency is designated by a control unit (CONT) 8 in accordance with a radio channel frequency used for communication. You.

[0008] The received intermediate frequency signal output from the receiver 3 is input to a demodulator (DEMOD) 6. The demodulation section 6 digitally demodulates the received intermediate frequency signal, thereby reproducing the received data.

The received data is input to the demultiplexing unit 9 through the control unit 108, and is separated into received image data and received audio data. The received image data is decoded into image information by a multimedia (MM) processing unit 10 and displayed and output from a display unit (LCD) 11. The received voice data is decoded by a voice codec (CODEC) 12 and output from a speaker unit 13 as loudspeakers.

On the other hand, image data picked up by the camera unit 14 is encoded by the multimedia processing unit 10 and output to the demultiplexing unit 9 as transmission image data. The transmission voice input from the microphone unit 15 is encoded by the voice codec 12 and input to the demultiplexing unit 9 as transmission voice data.

The demultiplexing unit 9 multiplexes the transmission image data and the transmission audio data, and outputs the multiplexed transmission data to the modulation unit (MOD) 7 via the control unit 108. The modulator 7 digitally modulates the carrier signal using the transmission data according to a predetermined modulation method, and outputs the result of the modulation to the transmitter (Tx) 4.

The transmitting section 4 mixes the modulation result of the modulating section 7 with the transmitting local oscillation signal generated from the frequency synthesizer 5 to generate a radio frequency transmitting signal. Then, the transmitting unit 4 amplifies the signal to a predetermined transmission power level, and transmits the signal from the antenna 1 to the base station via the antenna duplexer 2.

The key input unit 16 includes ten keys and function keys for inputting dial numbers, and receives various instructions from the user through these keys, including instructions relating to outgoing / incoming calls.
The battery 17 is formed of a secondary battery such as a lithium ion battery or a nickel hydride battery, and is a driving power source for the terminal device.

The control unit 108 includes, for example, a microcomputer as a main control unit, and controls each unit related to the communication as described above and controls each unit in response to a user request through the key input unit 16. Things.

With the above-described configuration, the conventional mobile radio terminal is capable of performing video communication in addition to normal voice communication. However, in the conventional mobile wireless terminal having the above-described configuration, as described above, a large-sized display unit and an electronic camera that have recently been colored have been required to be large-sized, and portability has been impaired. was there.

In addition, when using the videophone function, it is necessary to carry an earphone microphone or the like in order to make a voice call while watching the image on the display unit, which is problematic in terms of convenience and portability. .

[0017]

However, the conventional mobile radio terminal has a problem that its size has been increased due to the enhancement of functions and its portability has been impaired. SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as its object to provide a mobile radio terminal having high portability even if it is highly functionalized.

In the conventional mobile radio terminal, when using the videophone function, it is necessary to carry an earphone microphone or the like in order to make a voice call while watching the image on the display unit, which is convenient and portable. There was a problem in terms of.

The present invention has been made in order to solve the above-mentioned problem. Even when a videophone function is used, it is possible to make a voice call while watching an image on a display unit without carrying an earphone microphone or the like. Another object of the present invention is to provide a mobile wireless terminal that is excellent in portability.

[0020]

In order to achieve the above object, the present invention according to claim 1 comprises a first device and a second device, wherein the first device is connected to a communication network. A first wireless communication means for performing wireless communication with a possible base station, a second wireless communication means for performing wireless communication with a second device, and a signal received from the base station through the first wireless communication means. And wirelessly transmitting a signal received from the second device through the second wireless communication means to the base station through the first wireless communication means. Communication control means, the second device,
A third wireless communication unit that performs wireless communication with the first device through the second wireless communication unit, an input / output unit that inputs and outputs information, and a signal that is received from the first device through the third wireless communication unit It is configured to include a control output from the input / output means and a second communication control means for controlling to wirelessly transmit a signal input from the input / output means to the first device through the third wireless communication means. I made it.

The mobile radio terminal having the above configuration is composed of a first device having a configuration for performing wireless communication with a base station and a second device having a configuration serving as an interface with a user. Since the wireless communication is performed between the two devices even when the device is located away from the device, the device can be operated.

Therefore, according to the mobile radio terminal having the above configuration, the second device does not have a configuration for performing radio communication with the base station, so that the second device can be downsized. The user can communicate through the base station only by holding the device. Therefore, even if the second device is equipped with a large display, etc., high portability can be achieved even if high functionality is achieved. Can be demonstrated.

In order to achieve the above object, the present invention according to claim 10 comprises a first device and a second device, wherein the first device includes a base station connectable to a communication network. A first wireless communication unit for performing wireless communication, a second wireless communication unit for transmitting and receiving an image signal by wireless communication between the second device, and an electrical connection with the second device; Electrical connection means for transmitting and receiving image signals, mechanical connection means for mechanically connecting to the second device, and audio output means for loudspeaking and outputting an audio signal obtained from the base station through the first wireless communication means. Voice input means for converting an input voice into a voice signal, and a voice signal obtained by the voice input means;
A transmission control unit for transmitting an image signal obtained from the device to the base station through the first wireless communication unit, and a second device,
An image pickup unit that performs image pickup to generate an image signal, and receives an image signal from the first device through the second wireless communication unit and wirelessly transmits the image signal generated by the image pickup unit to the first device. Electrically connecting the third wireless communication unit to the first device, receiving the image signal from the first device, and transmitting the image signal generated by the imaging unit to the first device. An electrical connection unit; a mechanical connection unit for mechanically connecting to the first device; and a display unit for displaying and outputting based on an image signal acquired from the first device. When the first device and the second device are connected by the electrical connection means, the image signal is transmitted through the electrical connection means, while the first device is transmitted by the electrical connection means. When the image signal is not connected to the second device, And to constitute comprises a communication control means for transmitting by radio communication between the second wireless communication means and the third wireless communication means.

The mobile radio terminal having the above configuration has a first device having a configuration for performing wireless communication with the base station and a configuration for performing voice communication, and a second device having a configuration for performing video communication. It is possible to operate even when both devices are electrically connected and integrated, and wireless communication is performed between both devices even when both devices are separated. It has a possible configuration.

Therefore, conventionally, when the videophone function was used, an earphone microphone or the like was required to make a voice call while watching the image on the display unit.
According to the mobile radio terminal having the above configuration, since the two devices can be operated in a separated state, an earphone microphone or the like is not required, and the first device and the second device can be used during a call only by voice or when not operating. Can be integrated by mechanical connection and electrical connection, so that it is possible to achieve both convenience in using the videophone function and portability during a voice-only call or non-operation.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, the first of the present invention
A mobile radio terminal according to the embodiment will be described. FIG. 1 is a circuit block diagram showing the configuration. As shown in FIG. 1, the mobile wireless terminal according to the first embodiment includes a wireless device 100 and an operating device 200.

First, the wireless device 100 will be described. The wireless device 100 has an appearance as shown in FIG.
FIG. 2A is a front view of the wireless device 100, and FIG.
FIG. 2B is a side view of the wireless device 100.

The wireless device 100 and the operating device 200 are electrically connected by connecting a connector 112 and a connector 201 described later, and are integrated in a stable state by a physical lock mechanism provided on both. You. And
The electrical connection is released by an ejector mechanism (not shown), and the two are separated.

A radio frequency signal transmitted from a base station (not shown) via a radio communication channel is received by an antenna 101 and then transmitted through an antenna duplexer (DUP) 102.
The signal is input to the receiving unit (Rx) 103.

In the receiving section 103, the received radio frequency signal is mixed with a reception local oscillation signal oscillated by a frequency synthesizer (SYN) 105 and frequency-converted into a reception intermediate frequency signal.

The local oscillation signal oscillated by the frequency synthesizer 105 is for reception and transmission, and the frequency is instructed by the control unit (CONT) 108 according to the radio channel frequency used for communication. You.

The received intermediate frequency signal output from the receiving section 103 is input to a demodulation section (DEMOD) 106. The demodulation section 106 digitally demodulates the received intermediate frequency signal, thereby reproducing the received data. The received data is transmitted to the switching unit 1 through the control unit 108.
09 is input.

The connector 112 has a shape that can be fitted to the connector 201 of the operating device 200, and this fitting electrically connects the radio device 100 and the operating device 200.

In this electrical connection, the reception data input from the control unit 108 through the switching unit 109 is transmitted to the operating device 200 through the connector 201, and the transmission data addressed to the wireless device transmitted from the operating device 200 through the connector 201. Is output to the control unit 108 through the switching unit 109. Further, a charging control unit 115 described later is
00 battery 207.

The switching unit 109 includes a BT communication unit (BT) 11
0 and the connector 112 are connected to the control unit 1
08. This connection switching is performed by the connection detection unit 113.

The connection detection unit 113 detects the connection state of the connector 112, and the operation device 20 is connected to the connector 112.
0 connector 201 is connected, the connector 1
12 so that the switching unit 10 is connected to the control unit 108.
9 is switched.

On the other hand, when connector 201 is not connected to connector 112, connection detecting section 113 controls switching section 109 so that BT communication section 110 and control section 108 are connected.

The BT communication unit 110 communicates with the BT communication unit 203 of the operating device 200 via the
The wireless communication by the ooth system is performed. The reception data input from the control unit 108 is wirelessly transmitted through the switching unit 109, and the operating device 20 is transmitted through the BT communication unit 203.
Transmission data addressed to the wireless device transmitted wirelessly from 0 is output to the control unit 108 through the switching unit 109.

The control unit 108 includes, for example, a microcomputer as a main control unit, and controls various units related to communication with the base station and communication with the operation device 200.

The control unit 108 separates the user data and the transmission data from the transmission data addressed to the radio device received from the operating device 200 through the BT communication unit 110 or the connector 112 through the switching unit 109, and Output to the modulation unit (MOD) 107.

For the user data extracted from the transmission data addressed to the wireless device, the control unit 108 decodes the user's request from the data and performs control relating to outgoing / incoming calls and various control operations.

The modulator 107 digitally modulates the carrier signal using the transmission data according to a predetermined modulation method, and outputs the result of the modulation to the transmitter (Tx) 104.
The transmission section 104 mixes the modulation result of the modulation section 107 with the transmission local oscillation signal generated from the frequency synthesizer 105 to generate a radio frequency transmission signal. Then, transmitting section 104 amplifies this to a predetermined transmission power level,
The signal is transmitted from the antenna 101 to the base station via the antenna duplexer 102.

The battery 114 is a secondary battery such as a lithium ion battery or a nickel hydride battery.
00 is the driving power supply. The charge control unit 115 controls the battery 11
4 is supplied to the operating device 200 through the connector 112.

Next, the operation device 200 will be described. The operating device 200 has an appearance as shown in FIG. FIG.
FIG. 3A is a front view of the operating device 200, and FIG.
3 is a side view of the operating device 200. FIG.

The connector 201 has a shape that can be fitted to the connector 112 of the wireless device 100, and this fitting electrically connects the wireless device 100 and the operating device 200.

In this electrical connection, the received data transmitted from the wireless device 100 through the connector 201 is output to the demultiplexing unit 205 through the switching unit 202. Also, the transmission data addressed to the wireless device input from the demultiplexing unit 205 through the switching unit 202 is transmitted through the connector 201 to the wireless device 10.
Transmit to 0.

When power is supplied from the charging control unit 115 of the wireless device 100 through this electrical connection, the operating device 200 is driven and the battery 207 is charged by this power. The battery 207 is formed of a secondary battery such as a lithium ion battery or a nickel hydride battery, and is a driving power source for the operating device 200.

The switching section 202 connects one of the connector 201 and the BT communication section (BT) 203 to the demultiplexing section 205. This connection switching is performed by the connection detection unit 20.
6 done.

The connection detecting unit 206 detects the connection state of the connector 201, and the connector 201
0 connector 112 is connected, the connector 2
The switching control of the switching unit 202 is performed so that the multiplexing unit 01 and the demultiplexing unit 205 are connected.

On the other hand, when the connector 112 is not connected to the connector 201, the connection detection unit 206 controls the switching of the switching unit 202 so that the BT communication unit 203 and the demultiplexing unit 205 are connected.

The BT communication unit 203 communicates with the BT communication unit 110 of the wireless device 100 via the
The wireless communication by the ooth system is performed. The transmission data addressed to the wireless device input from the demultiplexing unit 205 is wirelessly transmitted through the switching unit 202, and the received data wirelessly transmitted from the wireless device 100 is received through the BT communication unit 110. Then, the data is output to the demultiplexing unit 205 through the switching unit 202.

The demultiplexing unit 205 separates the reception data received from the wireless device 100 through the BT communication unit 203 or the connector 201 through the switching unit 202 into reception image data and reception audio data.

The received image data is decoded into image information by a multimedia processing unit 209 and is displayed on a display unit (LCD) 21.
It is output from 0. The received voice data is decoded by a voice codec (CODEC) 214,
13 is output.

On the other hand, an image signal captured by the camera unit 211 is encoded by the multimedia processing unit 209 and output to the demultiplexing unit 205 as transmission image data. The transmitted voice input from the microphone unit 212 is encoded by the voice codec 214, and transmitted as voice data.
The signal is output to the demultiplexing unit 205.

The key input unit 208 is composed of numeric keys and function keys for inputting dial numbers, and receives various instructions from the user through these keys, including instructions related to outgoing / incoming calls. To the demultiplexing unit 205.

On the other hand, the demultiplexing section 205 multiplexes the transmission image data from the multimedia processing section 209 and the transmission audio data from the audio codec 214 to generate transmission data.

The demultiplexing section 205 adds the instruction from the user received at the key input section 208 as user data to the transmission data, generates transmission data addressed to the radio, and outputs the data to the switching section 202. I do.

Next, the operation of the mobile radio terminal having the above configuration will be described. First, an operation in a case where the connector 112 of the wireless device 100 and the connector 201 of the operating device 200 are used in an integrated state as shown in FIG. 4 will be described.

By the electrical connection between the connector 112 and the connector 201, the connection detecting unit 113 controls the switching of the switching unit 109 so that the connector 112 and the control unit 108 are connected.

On the other hand, the connection detecting section 206
2 and the connector 201, the connector 20
1 and the demultiplexing unit 205 so that the switching unit 20
2 is switched and controlled.

In the state where such switching control is performed,
The received data decoded by demodulation section 106 is transmitted to control section 10
8 and the switching unit 109, the connectors 112, 201
Is transmitted to the operating device 200 through the. In the operating device 200, the received data transmitted from the wireless device 100
02 to the demultiplexing unit 205.

The demultiplexing section 205 separates the received data into received image data and received audio data, and outputs the received image data to the multimedia processing section 209, while outputting the received audio data to the audio codec 214. .

The multimedia processing unit 209 decodes the received image data into image information and outputs the image information from the display unit 210. The audio codec 214 decodes the received audio data and outputs the loudspeaker from the speaker unit 213.

On the other hand, image data picked up by the camera unit 211 is encoded by the multimedia processing unit 209 and then output to the demultiplexing unit 205 as transmission image data. The transmitted voice input from the microphone unit 212 is
After being encoded by the audio codec 214, it is output to the demultiplexing unit 205 as transmission audio data. When an instruction is given from the user via the key input unit 208, the instruction is notified to the demultiplexing unit 205 as user data.

On the other hand, the demultiplexing section 205 multiplexes the transmission image data from the multimedia processing section 209 and the transmission audio data from the audio codec 214 to generate transmission data.

The demultiplexing section 205 adds the user data from the key input section 208 to the transmission data to generate transmission data addressed to the radio, and transmits the transmission data to the radio 100 via the switching section 202 and the connector 201. I do.

On the other hand, in radio 100, user data and transmission data are separated from transmission data addressed to the radio transmitted through connector 112 and switching section 109, and the transmission data is output to modulation section 107. .

For the user data extracted from the transmission data addressed to the wireless device, the control unit 108 decodes the user's request from the data, and performs control relating to the required transmission / reception and various control operations. .

On the other hand, the transmission data is used for digitally modulating the carrier signal in modulation section 107, and the result of the modulation is output to transmission section 104. Transmission unit 104
Represents the modulation result of the modulation unit 107 as the frequency synthesizer 10
5 is mixed with the transmission local oscillation signal generated from
After generating a transmission signal of a radio frequency, amplifying the transmission signal to a predetermined transmission power level, the signal is transmitted from the antenna 101 to the base station via the antenna duplexer 102.

The charging control section 115 supplies the electric power of the battery 114 to the operating device 200 through the connector 112, whereby the charging of the battery 207 of the operating device 200 is started.

Next, the operation in the case where the operation is performed without connecting the connector 112 of the wireless device 100 and the connector 201 of the operation device 200 will be described. Connector 112 and Connector 2
01, the connection detection unit 1
13 controls switching of the switching unit 109 so that the BT communication unit 110 and the control unit 108 are connected.

On the other hand, the connection detecting section 206
When no electrical connection is made between connector 2 and connector 201, switching section 202 is controlled so that BT communication section 203 and demultiplexing section 205 are connected.

In the state where such switching control is performed,
The received data decoded by demodulation section 106 is transmitted to control section 10
8 and the switching unit 109 are transmitted from the BT communication unit 110 to the operating device 200 by wireless communication. Operation device 200
Then, the received data wirelessly transmitted from the wireless device 100 is B
The signal is received by the T communication unit 203 and output to the demultiplexing unit 205 through the switching unit 202.

The demultiplexing unit 205 separates the received data into the received image data and the received audio data, and outputs the received image data to the multimedia processing unit 209, while outputting the received audio data to the audio codec 214. .

The multimedia processing unit 209 decodes the received image data into image information and outputs the image information from the display unit 210. The audio codec 214 decodes the received audio data and outputs the loudspeaker from the speaker unit 213.

On the other hand, the image data picked up by the camera unit 211 is encoded by the multimedia processing unit 209 and then output to the demultiplexing unit 205 as transmission image data. The transmitted voice input from the microphone unit 212 is
After being encoded by the audio codec 214, it is output to the demultiplexing unit 205 as transmission audio data. When an instruction is given from the user via the key input unit 208, the instruction is notified to the demultiplexing unit 205 as user data.

On the other hand, the demultiplexing section 205 multiplexes the transmission image data from the multimedia processing section 209 and the transmission audio data from the audio codec 214 to generate transmission data.

Then, the demultiplexing section 205 adds the user data from the key input section 208 to the transmission data to generate transmission data addressed to the radio, and outputs the transmission data to the BT communication section 203 through the switching section 202. The BT communication unit 203
The transmission data addressed to the radio is transmitted to the radio 100
Transmit to.

On the other hand, in the wireless device 100, the operating device 2
BT communication unit 110 receives the transmission data transmitted wirelessly from 00 to BT communication unit 110, and transmits to control unit 1 through switching unit 109.
08 is output.

The control unit 108 separates user data and transmission data from the wirelessly transmitted transmission data addressed to the radio, and outputs the transmission data to the modulation unit 107.
For the user data extracted from the transmission data addressed to the wireless device, the control unit 108 decodes the user's request from the data, and performs control relating to the required transmission / reception and various control operations.

On the other hand, the transmission data is used for digitally modulating the carrier signal in modulation section 107, and the result of this modulation is output to transmission section 104. Transmission unit 104
Represents the modulation result of the modulation unit 107 as the frequency synthesizer 10
5 is mixed with the transmission local oscillation signal generated from
After generating a transmission signal of a radio frequency, amplifying the transmission signal to a predetermined transmission power level, the signal is transmitted from the antenna 101 to the base station via the antenna duplexer 102.

As described above, in the mobile radio terminal having the above configuration, the radio 100 having a configuration for mainly performing radio communication with a base station and the operating device 200 having a configuration serving as an interface with a user are mainly used. It is possible to operate even when both units are electrically connected and integrated, and even when both units are separated, Blue
Operation is possible because wireless communication of the Tooth system is performed.

Therefore, according to the mobile radio terminal having the above configuration, when the mobile radio terminal is operated in a state where the two are separated from each other, the user must manually operate only the operating device 200 having no configuration for performing radio communication with the base station. Therefore, even if the display portion 210 is a large-sized color liquid crystal display, the display portion 210 can function as a videophone without impairing portability.

In such an operation mode, the radio 1
Since 00 is not obtained, even if the operation time is extended by increasing the capacity of the battery 114, the convenience of the user is not impaired.

Since the wireless device 100 can be operated at a position distant from the human body, stable communication can be performed by placing the wireless device 100 at a place that is hardly affected by a human body or a building.

Further, in the operating device 200, the radio output necessary for communication with the radio
Can be significantly smaller than the wireless output required for communication with the base station, the power required for wireless communication is small, and the capacity of the battery 207 is smaller than that of the battery 114. Contributes to

Further, if necessary, the wireless device 100 and the operating device 200 are electrically connected and operated in an integrated state, so that power is supplied from the wireless device 100 to the operating device 200 side. Thus, the battery 207 of the operating device 200 can be charged.

Further, since the radio device 100 has no complicated shape such as a key operation unit, a display unit, and a voice input / output unit other than the antenna 101, the housing can be simplified. The waterproof structure can be easily applied. As described above, by making the wireless device 100 have a waterproof structure, it is possible to place the wireless device 100 outdoors and operate it with an improved communication environment with the base station.

The present invention is not limited to the above embodiment. For example, in the first embodiment, the demultiplexing unit 205, the multimedia processing unit 209, and the audio codec 214 are provided on the operation device 200 side, but they may be provided on the wireless device 100 side. According to this, the portability of the operating device 200 can be further improved.

Further, since wireless communication by the Blue Tooth system is possible between the wireless device 100 and the operating device 200, one wireless device 100 is used as shown in FIG. Is used as a master, and the plurality of operating devices 200 to 20n are slaves, so that a plurality of users can operate simultaneously.

Further, a PDA (Personal Digital Assistance) terminal 3 capable of wireless communication by the Blue Tooth system
It is also possible to perform wireless communication with the wireless device 100 using the Blue Tooth system using 00.

Next, a mobile radio terminal according to a second embodiment of the present invention will be described. FIG. 6 is a circuit block diagram showing the configuration. As shown in FIG. 6, the mobile wireless terminal according to the second embodiment includes a main body 400 and a camera / display unit 500.

The main body 400 has an appearance as shown in FIG. FIG. 7A is a front view of the main body 400, and FIG.
(B) is a side view of the main body 400. The camera / display unit 500 has an appearance as shown in FIG. FIG.
FIG. 8A is a front view of the camera / display unit 500, and FIG. 8B is a side view of the camera / display unit 500.

Main body 400 and camera / display unit 500
Are electrically connected by connecting a connector 414 and a connector 511 described later, and are integrated in a stable state by a physical lock mechanism provided on both.

FIG. 9 shows this state. FIG. 9A is a front view in this state, and FIG. 9B is a side view in this state. Then, by an ejector mechanism (not shown),
The electrical connection is released and the two are separated.

First, the main body 400 will be described.
A radio frequency signal transmitted from a base station (not shown) via a radio communication channel is received by an antenna 401,
The signal is input to the RF unit 402, where it is frequency-converted into an intermediate frequency signal, and output to the RF control unit 403.

The RF control section 403 digitally demodulates the intermediate frequency signal and reproduces received data. The received data is composed of received audio data or received audio data and received image data, and is output to the main body control unit 404.

The connector 414 has a shape capable of fitting with the connector 511 of the camera / display unit 500, and electrically connects the main body 400 and the camera / display unit 500 by this fitting. is there.

In this electrical connection, the main body control unit 404
Is transmitted to the camera / display unit 500 via the connector 511, and the transmission image data transmitted from the camera / display unit 500 via the connector 511 is output to the main body control unit 404. Further, a charge control unit 413 described later is electrically connected to the battery 510 of the camera / display unit 500.

The connection detecting section 411 detects whether or not the connector 511 of the camera / display unit 500 is connected to the connector 414, and outputs the detection result to the main body control section 404 and the charging control section 413.

The charging control section 413 supplies the power of the battery 412 to the camera / display unit 500 through the connector 414 when the detection result notified from the connection detecting section 411 indicates the connection state. The battery 412
Is a drive power source for the main body 400, which is formed of a secondary battery such as a lithium ion battery or a nickel hydride battery.

The main body control unit 404 includes, for example, a microcomputer as a main control unit, and controls various units related to communication with the base station and communication with the camera / display unit 500. is there.

In this control, when the detection result notified from the connection detecting unit 411 indicates the connection state, the main body control unit 404 exchanges data with the camera / display unit 500 through the connector 414, and on the other hand, Detector 411
If the detection result indicates a non-connection state, data exchange with the camera / display unit 500 is performed through the BT communication unit (BT) 405.

For this reason, main body control section 404 separates the received data input from RF control section 403 into received image data and received audio data, and outputs the received audio data to audio codec (CODEC) 408. .

As described above, the received image data is transmitted to the camera / display unit 500 through the connector 414 or the BT communication unit 405 according to the detection result of the connection detection unit 411.

The BT communication unit 405 performs wireless communication with the BT communication unit 507 of the camera / display unit 500, which will be described later, via the antenna 406 according to the Blue Tooth system. Image data is wirelessly transmitted, and transmission image data wirelessly transmitted from the camera / display unit 500 via the BT communication unit 507 is received and output to the main body control unit 404.

[0107] The audio codec 408 is
4 to decode the received voice data from the
More loudspeaker output. Further, the audio codec 408 encodes the transmitted voice input from the microphone unit 409 and outputs the encoded voice to the main unit control unit 404 as transmitted voice data.

Then, the main body control unit 404 operates the connector 4
14 or multiplexes the transmission image data transmitted from the camera / display unit 500 via the BT communication unit 405 with the transmission audio data input from the audio codec 408, and outputs the multiplexed transmission data to the RF control unit 403.

[0109] RF control section 403 digitally modulates the carrier signal by a predetermined modulation method using the transmission data, and outputs the modulation result to RF section 402. RF section 402 converts the modulation result of RF control section 403 into a radio frequency to generate a transmission signal. Then, RF section 402 amplifies the transmission signal to a predetermined transmission power level, and transmits the signal from antenna 401 to the base station.

The key input unit 407 is composed of numeric keys, function keys, and the like for dial number input, and accepts various instructions from the user through these keys, such as instructions relating to outgoing / incoming calls. Is notified to the main body control unit 404.

Next, the camera / display unit 500 will be described. An image signal captured by the camera unit 503 is encoded by the encoder 502 and output to the camera / display unit control unit 501 as transmission image data.

A decoder 504 decodes the received image data input from the camera / display unit control section 501,
Output to LCD control unit 505. LCD control unit 505
Represents the received image data decoded by the decoder 504,
Display section (L) consisting of LCD (Liquid Crystal Display)
(CD) 506 for display output.

The BT communication unit (BT) 507 includes an antenna 5
08, wireless communication with the main unit 400 is performed by the Blue Tooth system. The transmission image data input from the camera / display unit control unit 501 is wirelessly transmitted, and the main unit 400 is wirelessly transmitted through the BT communication unit 405. The received received image data is received and output to the camera / display unit control unit 501.

The connector 511 has a shape that can be fitted to the connector 414 of the main body 400, and electrically connects the main body 400 and the camera / display unit 500 by this fitting.

In this electrical connection, the received image data transmitted from the main body 400 through the connector 414 is output to the camera / display unit control unit 501. Further, transmission image data (described later) input from the camera / display unit control unit 501 is transmitted to the main body 400 via the connector 414.

When power is supplied from the charging control section 413 of the main body 400 by this electrical connection, the power drives the camera / display unit 500 and charges the battery 510. Battery 510
Is a driving power supply for the camera / display unit 500, which is formed of a secondary battery such as a lithium ion battery or a nickel hydride battery.

The switch 509 is connected to a BT communication unit 5 described later.
The ON / OFF state is notified to the camera / display unit control unit 501.

The camera / display unit control unit 501 includes, for example, a microcomputer as a main control unit, and controls various units related to communication with the main unit 400 and controls input / output of image data. It is.

The camera / display unit controller 50
1, when the switch 509 is turned on, the battery 510
Is supplied to the BT communication unit 507 to perform wireless communication with the main unit 400 by the BT communication unit 507. When the switch 509 is turned off, communication with the main unit 400 via the connector 511 is performed. To control.

That is, the camera / display unit controller 5
01, when the switch 509 is in the ON state, the received image data is received from the main body 400 through the BT communication unit 507 and output to the decoder 504, and the
02 from the BT communication unit 507
Output to

On the other hand, when the switch 509 is in the OFF state, the camera / display unit control section 501 receives the received image data from the main body 400 through the connector 511, outputs the received image data to the decoder 504, and inputs the data from the encoder 502 described later. The transmitted image data to be transmitted
Output to

Next, the operation of the mobile radio terminal having the above configuration will be described. First, an operation in a case where the connector 414 of the main body 400 and the connector 511 of the camera / display unit 500 are fitted and electrically connected to each other and used in an integrated state as shown in FIG. 4 by a physical lock mechanism will be described. I do. At this time, it is assumed that the switch 509 of the camera / display unit 500 is in the OFF state.

When the connector 414 and the connector 511 are electrically connected, the connection detecting section 411 detects this state, and notifies the main body control section 404 and the charging control section 413 of the state.

On the other hand, the charging control unit 413 supplies the power of the battery 412 to the camera / display unit 500 via the connector 414. As a result, the camera / display unit 500 operates with the power supplied from the main body 400.

On the other hand, the main body control section 404
The received data input from the receiver 03 is separated into received audio data and received image data. The received audio data is output to the audio codec 408 and decoded,
The voice is output from the speaker unit 410. The received image data is transmitted to the camera / display unit 500 via the connector 414.

On the other hand, the camera / display unit 50
0, the switch 509 is in the OFF state, so that the camera / display unit control unit 501
11 receives the received image data and outputs it to the decoder 504.

[0127] The decoder 504 decodes the received image data and outputs it to the LCD control unit 505. The LCD control unit 505 displays and outputs the received image data decoded by the decoder 504 through the display unit 506.

On the other hand, the image signal picked up by the camera section 503 is encoded by the encoder 502 to become transmission image data, and is output to the main body 400 through the camera / display unit control section 501 and the connector 511.

On the other hand, in the main body 400, transmission image data input through the connector 414 is input to the main body control section 404. At this time, the audio codec 4
In step 08, the transmission voice input from the microphone unit 409 is encoded and output to the main body control unit 404 as transmission voice data.

The main control unit 404 multiplexes the transmission image data and the transmission audio data, and outputs the multiplexed transmission data to the RF control unit 403. The RF control unit 403 digitally modulates the carrier signal using the transmission data according to a predetermined modulation method, and outputs the modulation result to the RF unit 402.

[0131] RF section 402 converts the modulation result of RF control section 403 into a radio frequency to generate a transmission signal. Then, RF section 402 amplifies the transmission signal to a predetermined transmission power level, and transmits the signal from antenna 401 to the base station.

Next, the operation when the connector 414 of the main body 400 and the connector 511 of the camera / display unit 500 are operated without being connected will be described. In this case, the user turns on the switch 509 of the camera / display unit 500, holds the main body 400 in one hand, puts the speaker unit 410 on the ear, and places the camera / display unit 5 on the ear.
00 is displayed on the display unit 506 by holding 00 in the other hand.

If the connector 414 and the connector 511 are not electrically connected, the connection detecting section 411 detects this non-connection state, and notifies the main body control section 404 and the charging control section 413 of the fact.

On the other hand, the charging control unit 413 does not supply power to the camera / display unit 500 because the main body 400 and the camera / display unit 500 are not connected. For this reason, the camera / display unit 5
00 operates with electric power supplied from a battery 510 incorporated therein.

On the other hand, the main body control section 404
The received data input from the receiver 03 is separated into received audio data and received image data. The received audio data is output to the audio codec 408 and decoded,
The voice is output from the speaker unit 410. The received image data is output to the BT communication unit 405 and transmitted to the camera / display unit 500 by wireless communication.

On the other hand, the camera / display unit 50
At 0, the switch 509 is in the ON state,
The camera / display unit control unit 501 includes the BT communication unit 50
7 is supplied with the power of the battery 510 to receive the received image data wirelessly transmitted from the main body 400.

The BT communication unit 507 outputs the received image data to the decoder 504 via the camera / display unit control unit 501. The decoder 504 decodes the received image data and outputs it to the LCD control unit 505. The LCD control unit 505 displays and outputs the received image data decoded by the decoder 504 through the display unit 506.

On the other hand, an image signal picked up by the camera unit 503 is encoded by the encoder 502 to become transmission image data, and is output to the BT communication unit 507 through the camera / display unit control unit 501. BT communication unit 507
Transmits the transmission image data to the main body 400 by wireless communication.

On the other hand, in main unit 400, BT communication unit 405 receives the transmission image data transmitted from BT communication unit 507, and outputs the transmission image data to main unit control unit 404. At this time, the audio codec 40
In step 8, the transmission voice input from the microphone unit 409 is encoded and output to the main unit control unit 404 as transmission voice data.

The main control unit 404 multiplexes the transmission image data and the transmission audio data, and outputs the multiplexed transmission data to the RF control unit 403. The RF control section 403 digitally modulates the carrier signal using a predetermined modulation method using the transmission data, and outputs the modulation result to the RF section 402.

[0141] RF section 402 converts the modulation result of RF control section 403 into a radio frequency to generate a transmission signal. Then, RF section 402 amplifies the transmission signal to a predetermined transmission power level, and transmits the signal from antenna 401 to the base station.

As described above, in the mobile radio terminal having the above-described configuration, the main unit 400 having the configuration for mainly performing wireless communication with the base station and the configuration for performing voice communication, and the mobile communication terminal mainly for performing video communication. The camera / display unit 500 having the above configuration can be operated even when both devices are electrically connected and integrated, and even when both devices are separated, the Blue Tooth wireless communication can be performed between the two devices. Since communication is performed, operation is possible.

Therefore, conventionally, when the videophone function is used, an earphone microphone or the like is required to make a voice call while watching the image on the display unit.
According to the mobile radio terminal having the above configuration, the two can be operated in a state where they are separated from each other, so that an earphone microphone or the like is not required. Since it can be integrated, it is possible to achieve both the convenience of using the videophone function and the portability at the time of voice-only call or non-operation.

Note that the present invention is not limited to the above embodiment. It goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0145]

As described above, the mobile radio terminal according to the present invention has a first device having a configuration for performing radio communication with a base station and a second device having a configuration serving as an interface with a user. , And can operate even when both devices are located at a distance from each other because wireless communication is performed between the two devices.

Therefore, according to the present invention, the second device does not have a configuration for performing wireless communication with the base station, so that the second device can be reduced in size. Only the second device that can be reduced in size can be used. The user can communicate through the base station just by holding it, so even if the second device is equipped with a large-sized display, etc., it is possible to exhibit high portability even if advanced functions are achieved. A possible mobile wireless terminal can be provided.

The mobile radio terminal according to the present invention comprises:
A first device provided with a configuration for performing wireless communication with the base station and a configuration for performing voice communication, and a second device provided with a configuration for performing video communication, and both devices are electrically connected. It is possible to operate even in a state where the two devices are connected and integrated, and also in a state where the two devices are separated, since the wireless communication is performed between the two devices, the operation is possible.

Therefore, according to the present invention, since the two devices can be operated in a separated state, an earphone microphone or the like is not required, and the first device and the second device can be used during a telephone call only or when not operating. The device can be integrated by mechanical connection and electrical connection, making it possible to combine convenience when using the videophone function with portability during voice-only calls and non-operation. A wireless terminal can be provided.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing a configuration of a first embodiment of a mobile radio terminal according to the present invention.

FIG. 2 is an exemplary view showing an appearance of a wireless device of the mobile wireless terminal shown in FIG. 1;

FIG. 3 is a view showing the appearance of the operating device of the mobile wireless terminal shown in FIG. 1;

FIG. 4 is an exemplary view showing an appearance of the mobile wireless terminal in a state where the wireless device shown in FIG. 2 and the operating device shown in FIG. 3 are integrated;

FIG. 5 is a view for explaining how the wireless device of the mobile wireless terminal shown in FIG. 1 communicates with a plurality of operating devices.

FIG. 6 is a circuit block diagram showing a configuration of a second embodiment of the mobile radio terminal according to the present invention.

FIG. 7 is a view showing the appearance of the main body of the mobile wireless terminal shown in FIG. 6;

FIG. 8 is a view showing an appearance of a camera / display unit of the mobile wireless terminal shown in FIG. 6;

9 is a diagram showing an appearance of the mobile wireless terminal in a state where the main body shown in FIG. 7 and the camera / display unit shown in FIG. 8 are integrated.

FIG. 10 is a diagram showing the appearance of a conventional mobile radio terminal.

FIG. 11 is a circuit block diagram showing a configuration of the conventional mobile radio terminal shown in FIG.

[Description of Signs] 100 radio equipment 102 antenna duplexer (DUP) 103 reception unit (Rx) 104 transmission unit (Tx) 105 frequency synthesizer (SYN) 106 demodulation unit (DEMOD) 107 modulation unit ( MOD) 108 ... Control unit (CONT) 109, 202 ... Switching unit 110, 203, 405, 507 ... BT communication unit (BT) 112, 201, 414, 511 ... Connector 113, 206, 411 ... Connection detection unit 115, 413 ... Charge control unit 200 ... Operating device 205 ... Demultiplexing unit 208,407 ... Key input unit 209 ... Multimedia processing unit 214,408 ... Audio codec (CODEC) 300 ... PDA terminal 400 ... Main unit 402 ... RF unit 403 ... RF control Unit 404: body control unit 500: camera / display unit 501: camera / display unit Knit control unit 502 ... Encoder 504 ... Decoder 505 ... LCD control unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K023 AA07 BB02 BB04 DD01 HH07 LL05 NN06 PP12 5K027 AA11 BB02 BB17 CC08 GG04 KK02 KK07 MM17 5K067 AA21 BB04 DD51 EE03 EE35 KK17

Claims (11)

[Claims] The first device comprises a first device and a second device, wherein the first device performs first wireless communication means for performing wireless communication with a base station connectable to a communication network; A second wireless communication unit for performing wireless communication with the device; and a control for wirelessly transmitting a signal received from the base station through the first wireless communication unit to the second device through the second wireless communication unit; A first communication control unit that performs control to wirelessly transmit a signal received from the second device through the second wireless communication unit to the base station through the first wireless communication unit; A device, a third wireless communication unit for performing wireless communication with the first device through the second wireless communication unit, an input / output unit for inputting / outputting information, and the first wireless communication unit. The signal received from the device And a second communication control unit for performing a control for wirelessly transmitting a signal input from the input / output unit to the first device through the third wireless communication unit. Mobile radio terminal to do. 2. The apparatus according to claim 1, wherein the signal includes at least one of an audio signal and an image signal, wherein the input / output unit includes an audio input unit that converts an input audio signal into an audio signal, and an audio signal that outputs the audio signal. 2. The mobile radio terminal according to claim 1, further comprising: an output unit; a display unit for displaying and outputting based on the image signal; and a key input unit for receiving a request from a user by key input. 3. The mobile radio terminal according to claim 2, wherein the input / output unit includes an imaging unit that performs imaging to generate an image signal. 4. The second device decodes a signal received from the first device through the third wireless communication device, and encodes a signal obtained by the input / output device. Encoding means, wherein the audio output means and the display means output based on the signal decoded by the decoding means, and the second communication control means is encoded by the encoding means. The mobile radio terminal according to claim 2 or 3, wherein control is performed to wirelessly transmit the received signal to the first device through the third radio communication unit. 5. The mobile radio terminal according to claim 1, wherein the first device and the second device include mechanical connection means that can be mechanically connected to each other. . 6. The first device and the second device each include an electrical connection unit that can be electrically connected to each other, and the first and second communication control units perform a first connection by the electrical connection unit. When the second device and the second device are connected, instead of the wireless communication performed between the second wireless communication unit and the third wireless communication unit, through the electrical connection by the connection unit The mobile radio terminal according to any one of claims 1 to 5, wherein signals are exchanged. 7. The first device includes a power supply unit that supplies power through an electrical connection made by the electrical connection unit, and the second device includes a secondary battery used as a drive power supply. And charging means for charging the secondary battery with electric power supplied from the first device through an electric connection made by the electric connection means. 7. The mobile radio terminal according to any one of 6. 8. The communication method used between the second wireless communication means and the third wireless communication means is a communication method in which a plurality of devices can communicate simultaneously, and the third wireless communication The mobile radio terminal according to any one of claims 1 to 7, wherein the means communicates simultaneously with the plurality of second devices. 9. The mobile radio terminal according to claim 1, wherein the first device has a waterproof case. 10. A wireless communication system comprising: a first device and a second device, wherein the first device performs first wireless communication means for performing wireless communication with a base station connectable to a communication network; A second wireless communication unit that transmits and receives an image signal by wireless communication with a device; an electrical connection unit that is electrically connected to the second device to transmit and receive an image signal; Mechanical connection means for mechanically connecting to the second device; voice output means for loudspeaking and outputting a voice signal obtained from the base station through the first wireless communication means; voice input for converting an input voice to a voice signal Transmission control means for transmitting an audio signal obtained by the audio input means and an image signal obtained from the second device to the base station through the first wireless communication means; The device performs imaging to generate an image signal. Means for receiving an image signal from the first device through the second wireless communication means, and wirelessly transmitting the image signal generated by the imaging means to the first device. Means for electrically connecting to the first device, receiving an image signal from the first device, and transmitting an image signal generated by the imaging means to the first device; A connection unit, a mechanical connection unit for mechanically connecting to the first device, and a display unit for displaying and outputting based on an image signal acquired from the first device. When the first device and the second device are connected by the electrical connection unit, the second device transmits the image signal through the electrical connection unit, A first device and a second device by means If is not connected,
A mobile wireless terminal, comprising: communication control means for transmitting the image signal by wireless communication between a second wireless communication means and a third wireless communication means. 11. The first device includes a power supply unit that supplies power through an electrical connection made by the electrical connection unit, and the second device includes a secondary battery used as a driving power source. The charging device according to claim 10, further comprising: charging means for charging the secondary battery with electric power supplied from the first device through an electric connection made by the electric connection means. Mobile wireless terminal.