JPH1198576A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct external communication by relating a portable telephone set to a data communication terminal equipment non-simultaneously with the same telephone number. SOLUTION: The same telephone number is provided to a portable telephone set and a data communication terminal equipment. When the data communication terminal equipment performs external communication, a communication permission request signal output section 35 outputs a communication permission request signal to the portable telephone set. A telephone number rent permission propriety control section 40 of the portable telephone set sends back a permission signal to the data communication terminal equipment when the portable telephone set is not in use. The data communication terminal equipment receiving the permission signal activates an external communication function 39 to conduct external communication. In this case, the portable telephone set inactivates an external communication function 43. When the external communication is finished and a communication end notice section 38 outputs a communication end signal to the portable telephone set, the external communication function 39 of the data communication terminal equipment is inactivated. The portable telephone set receives the communication end signal to activate the external communication function 43 to attain the external communication by the portable telephone set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device which associates a portable telephone with a data communication terminal device and performs non-simultaneous communication with the outside using the same telephone number.

[0002]

2. Description of the Related Art Recently, a PS (Personal Phone System) (PHS)
stem)), and voice communication and data communication using a mobile phone. FIG. 5A shows an example of a communication system between a telephone terminal (telephone terminal device) 1 such as a PS and a network side of a telephone station (telephone base station) 2. The communication between the telephone terminal PS and the telephone base station (CS) is performed based on the procedure of the RCR standard 28 shown in FIG. 6, and the communication between slave units between the telephone terminals PS is also shown in FIG. It is performed in the procedure of the standard 28.

In FIG. 5, a telephone number and an ID number of the telephone terminal are given to the telephone terminal 1 side, subscriber data in which the telephone number and the ID number are associated with each other, It has a database that stores charge accumulation data for each number. The PHS telephone terminal 1 has an automatic location transmission function, and a location transmission signal is output from the automatic location transmission function. Is a system that keeps track of all the time.

When a service such as a telephone call is requested from the telephone terminal 1 to the network of the telephone station 2, the ID transmitted from the telephone terminal 1 is transmitted to the network of the telephone station 2.
The number is fetched, and it is determined whether or not the telephone terminal 1 that has requested the service is a terminal of an authorized registered subscriber.

[0005] This identification is performed by a cryptographic process, an example of which is shown in FIG. That is, telephone office 2
On the network side, when a service request is received from the telephone terminal 1, for example, a random number R is generated and sent to the telephone terminal 1 side.
On the other hand, the key of the random number R and the ID number is calculated. The telephone terminal 1 receives the random number R from the network side, performs the same operation as the network side using its own ID number and the random number R, and transmits the operation result to the network side. On the network side, the operation value calculated by itself is compared with the operation value sent from the telephone terminal 1 side, and when both the operation values match, the telephone terminal 1 requesting the service is a regular telephone terminal. Recognize and provide network services. For example, in the case of a telephone call service, a signal is transmitted to an area of a telephone terminal of a telephone number of a telephone number sent from the telephone terminal 1 to perform a telephone call service.

FIG. 4 shows a configuration of a conventional general data communication terminal device for a portable telephone. In the figure, 3 is a microphone, 4 is a speaker, 5 is a keypad, 6 is a liquid crystal display, 7 is a sub CPU, 8 is a main CPU, 10 is a battery, and 11 is a DC-DC converter.

[0007] An EEPROM is a memory in which data can be written and erased by an electric signal.
The telephone number and the ID number of the terminal device are written and stored in the PROM. The ROM is a memory that stores a communication program and the like, and the RAM is a memory that stores calculation results and received data.

[0008] 12 is a 14-bit A / D converter, 13 is 1
4-bit D / A converter, 14 is a signal compression circuit (ADPC
M codec), 15 is a TDMA synchronization control circuit, 16 is a modulator, 17 is an 8-bit D / A converter, 18 is a low-pass filter (LPF), 20 is an RF module, 21 is an antenna, 22 is a town converter, and 23 is Demodulator, 24
Is an 8-bit A / D converter, and 25 is a LAPDC protocol control circuit.

Reference numeral 26 denotes a baseband integrated LSI, which is a low-frequency circuit, and the RF module 20 is a high-frequency circuit.

[0010] This type of mobile phone data communication terminal device can perform voice communication and data communication. This terminal device has a mobile phone terminal structure mainly composed of a voice communication service. The terminal interposes a modem frequently used in an analog public network (wired), converts data into a pseudo voice signal, and performs data communication. Has been realized.

When voice communication is performed using the mobile phone data communication terminal device, voice is input from the microphone 3. This audio signal is converted from an analog signal to a digital signal by a 14-bit A / D converter 12, compressed by a signal compression circuit 14, and then converted to a TDMA synchronization control circuit 15.
, And is modulated by the modulator 16. And an 8-bit D
After being converted from a digital signal to an analog signal by the / A converter 17, the signal is supplied to the RF module 20 through the low-pass filter 18, and the audio signal is wirelessly transmitted by the antenna 21.

On the other hand, a voice signal received via the telephone station 2 is supplied from an antenna 21 to a town converter 22 via an RF module 20, further demodulated by a demodulator 23, and synchronously controlled by a TDMA synchronization control circuit 15. To the signal compression circuit 14. And 14-bit D / A
The signal is converted into an analog signal by the converter 13 and sound is emitted from the speaker 4.

On the other hand, when performing data communication, data is input from the keypad 5 or the like, and the data is transmitted to the main CP.
It is output as a digital signal from U8. Then, the data signal is synchronously controlled by the TDMA synchronization control circuit 15 and applied to the RF module 20, converted into a pseudo audio signal, and transmitted from the antenna 21 by radio. On the other hand, the received data signal is transmitted from the antenna 21 to the RF module 2
The pseudo audio signal is converted into a digital signal by the 8-bit A / D converter 24 via the "0". Then, the data is synchronously controlled by the TDMA synchronization control circuit 15 and taken in by the main CPU 8, stored in the RAM, or displayed on the liquid crystal display device 6 via the sub CPU 7.

[0014]

A conventional data communication terminal for a portable telephone is a telephone equipped with components such as a microphone 3, a speaker 4, a 14-bit A / D converter 12, and a 14-bit D / A converter 13. It is a large-scale configuration that adds a digital data signal transmission / reception function to this telephone function, making it difficult to incorporate it into a general-purpose terminal device such as a personal computer. There are no terminals at present.

In the conventional data communication terminal device for portable telephone, an ID number is assigned to each terminal device, and a telephone number is given for each ID number. However, since a single telephone number is given and a basic charge is charged for each data communication terminal device in addition to a call charge (line connection cost), there is a problem in that a large cost burden is required. This is a factor that hinders the spread of terminal devices.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a low-cost, small-size, light-weight, low-power-consumption device configuration that can be used integrally with a personal computer, and It is another object of the present invention to provide an unnecessary cost-saving type communication device.

[0017]

The present invention is configured as follows to achieve the above object. That is, the first
The invention relates to one mobile phone having an external communication function between areas and one or more data communication terminal apparatuses having an external communication function between areas. A communication device that performs communication to the outside by using simultaneously, wherein a direct intra-area communication function is provided between each of the data communication terminal devices and the mobile phone,
On the data communication terminal device side, a communication permission request signal output unit that outputs a communication permission request signal for performing external communication using the telephone number of the mobile phone to the mobile phone,
A data terminal-side communication start / stop control unit that receives a communication permission signal from the mobile phone, turns on the external communication function of the data communication terminal device, and turns off the external communication function when the external communication ends, using the number of the mobile phone. A communication end notification unit that outputs a communication end signal to the mobile phone when all external communication is ended, and the mobile phone side receives a communication permission request signal from the data communication terminal device when receiving a communication permission request signal. A telephone number borrowing permission / non-permission control unit that applies a communication permission signal to the data communication terminal device side when the communication is disabled, and a communication permission signal using the telephone number of the mobile phone when the terminal is not communicating; When the communication permission signal is output to the communication terminal device side, the external communication function of the mobile phone is turned off, and when the communication end signal is added from the data communication terminal device side And a means for solving the problems with the configuration including a mobile terminal side communication start-stop control unit to turn on the external communication function of the band phone side.

According to a second aspect of the present invention, in the apparatus having the configuration of the first aspect, a communication method of an intra-area communication function between the mobile phone and the data communication terminal device is at least one of a wired, a wireless, and an infrared. It is a means to solve the problem by being constituted by one method.

[0019] Further, a third aspect of the present invention is the power saving apparatus according to the first or second aspect, wherein the power application to the external communication function is stopped except during the external communication of the data communication terminal device. The function is added to solve the problem.

In a fourth aspect of the present invention, the external communication function of the data communication terminal device is formed on a PC card, and the PC card is mounted on a personal computer to perform external communication. I have.

In the present invention, the data communication terminal device comprises:
Upon receiving permission to communicate with the outside from the associated mobile phone, data transmission with the outside can be performed using the same phone number as the mobile phone. Since the network of the telephone base station manages the mobile phone and the data communication terminal device for the mobile phone using the same number, the basic fee is charged only to the mobile phone. Therefore, a plurality of data communication terminal devices are associated with one mobile phone,
Even if a plurality of data communication terminal devices are used individually, only the call fee (line connection fee) is required, and the cost of using the data communication terminal device can be reduced.

In addition, since the network side of the telephone base station can use the telephone number assigned to the portable telephone data communication terminal device as an ID number to certify the registration of the terminal device, there is no system change on the network side. It is not necessary, and the introduction and spread of the present invention can be facilitated.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the present embodiment, the same components as those of the conventional example are denoted by the same reference numerals, and the description thereof will not be repeated.

FIG. 1 shows a block diagram of an embodiment of a communication apparatus according to the present invention. The communication device according to the present embodiment uses a mobile phone PS and a data communication terminal device PC in association with each other, and the data communication terminal device has a mobile phone telephone number as a telephone number (ID number) of the device. Writing is installed.

The portable telephone has a telephone number borrowing permission / inhibition control unit 40, a portable telephone side in-area communication function 41, a portable telephone communication start / stop control unit 42, and an external communication function 43 for communicating outside the area. , And
The data communication terminal device includes a communication permission request signal output unit 35
And a data communication terminal-side intra-area communication function 36, a data communication terminal-side communication start / stop control unit 37, a communication end notification unit 38, and an external communication function 39 for communicating outside the area. It is configured.

The intra-area communication function 41 on the mobile phone side and the intra-area communication function 36 on the data communication terminal side have a function of performing communication in the same area by at least one of the well-known wired, wireless or infrared method. Equipped,
The communication method is performed according to the same procedure as the communication method between mobile phones in the same area.

The feature of this embodiment is that the same telephone number is assigned to the portable telephone and the data communication terminal,
This is because communication with the external area is performed asynchronously. Therefore, when performing external communication on the data communication terminal device side, the mobile phone side is inquired whether or not the external communication may be performed. In addition, the external communication with the external area is enabled using the data communication terminal device only when permission is obtained from the mobile phone.

For this reason, the communication permission request signal output unit 35 of the data communication terminal device, when performing communication with the outside using the data communication terminal device, determines whether or not communication with the mobile phone is permitted. A request signal is output, and this signal is supplied from the data communication terminal device side to the mobile phone side using the intra-area communication functions 36 and 41 on the mobile phone side and the data communication terminal side. On the mobile phone side, in response to the communication permission request signal, the telephone number borrowing permission / prohibition control unit 40 outputs a non-permission signal during a telephone call using the mobile phone. This non-permission signal is transmitted to the intra-area communication function 41.
Through 36 to the data communication terminal device side.
When the mobile phone is not in use, the telephone number borrowing permission / non-permission control unit 40 similarly applies a communication permission signal to the data communication terminal device through the intra-area communication functions 41 to 36.

When the non-permission signal is applied from the mobile phone, the communication start / stop control unit 37 of the data communication terminal device keeps the external communication function 39 in the off state, and performs external communication with outside the area. Block. On the other hand, when the communication permission signal is added from the telephone number borrowing permission / prohibition control unit 40 side, the communication start / stop control unit 37 of the data communication terminal device turns on the external communication function 39 and turns on the external communication function. The external communication with the outside of the area is made possible by utilizing the information 39.

The communication start / stop control unit 42 on the mobile phone side
When the non-permission signal is output from the telephone number borrowing permission / prohibition control unit 40, the communication start / stop control unit 42 on the mobile phone side
Keeps the external communication function 43 for performing external communication with the outside of the area in the ON drive state, and continues the external communication using the mobile phone. On the other hand, when the communication permission signal is output from the telephone number borrowing permission / prohibition control unit 40, the communication start / stop control unit 42 on the mobile phone side transmits the external communication function 4 on the mobile phone side.
3 is turned off to prevent external communication using the mobile phone.

Communication end notification unit 3 on the data communication terminal side
8 outputs a communication end signal when the external communication with the outside of the area using the external communication function 39 on the data communication terminal side is completed, and the communication end signal is output from the in-area communication on the data communication terminal side. The communication is transmitted from the function 36 to the mobile phone via the intra-area communication function 41 on the mobile phone side, and upon receiving the communication end signal, the communication start / stop control unit 42 on the mobile phone sets the external communication function 43 to the ON driving state, Enable external communication using a mobile phone. On the other hand, on the data communication terminal device side, when a communication end signal is output from the communication end notification unit 38, the communication start / stop control unit 37 on the data communication terminal device receives the signal and sends the data to the data communication terminal device. The external communication function 39 on the side is turned off, and external communication using the data communication terminal device is maintained in a blocking state.

As described above, in this embodiment, when a communication permission signal for external communication using the data communication terminal device is issued from the mobile phone, the mobile phone automatically enters a state in which external communication is blocked. External communication can be performed using only the data communication terminal device. When the external communication using the data communication terminal device is completed, the external communication function 39 of the data communication terminal device is turned off, and the external communication function of the mobile phone is stopped. Since the function 43 returns to the on-drive state, when one of the external communication functions of the mobile phone and the data communication terminal device is on-driven, the other external communication function is always turned off. This prevents double communication in which the mobile phone and the data communication terminal perform external communication at the same time, and the mobile phone and the data communication terminal use the same telephone number. In which part communication becomes possible.

When the external communication using the data communication terminal device is completed, the external communication function 39 on the data communication terminal device is immediately turned off and the external communication function 43 on the mobile phone is turned on. , Telephone base station C
Since the communication from S will access the mobile phone side, even if the mobile phone side and the data communication terminal side have the same telephone number, it will not be possible to access both the mobile phone side and the data communication terminal side. There is no particular problem.

The data communication terminal device according to the present embodiment is configured to be used integrally with a personal computer (for example, a notebook personal computer) 27. Therefore, the circuit of the data communication terminal device for a portable telephone is a PC as shown in FIG. Card 28
Is formed.

The data communication terminal device for a portable telephone is characterized in that it is configured to be used integrally with the personal computer 28 as described above, and that the function part based on the telephone shown in FIG. That is, microphone 3, speaker 4, 14-bit A / D converter 12, 14-bit D / A
The components such as the converter 13 and the signal compression circuit 14 are omitted,
Further, the keypad 5, the sub CPU 7, the liquid crystal display device 6, the battery 10,
The configuration of the apparatus is simplified by omitting components such as the C-DC converter 11 and the like, to reduce the size and weight of the apparatus, and to reduce the cost of the apparatus.

In connection with the above-mentioned characteristic device configuration, the data communication terminal device for portable telephone shown in FIG.
An MCIA interface circuit 30 and a switch control circuit 31 as a power saving function are provided. In addition,
In Figure 1, T _X D denotes a transmission signal, R _X D denotes a received signal.

The interface circuit 30 is a circuit for exchanging data via the PCMCIA bus between the personal computer 27 and the circuit of the portable telephone data communication terminal device formed on the PC card 28. The switch control circuit 31 is a personal computer. The power supplied from the 27 side to the circuit of the PC card 28 is intermittently controlled by the on / off control of the switch element 32. Specifically, the switch element 32 is turned on in response to a data communication start signal from the personal computer 27 only when the personal computer 27 starts data communication, and the mobile phone data communication of the PC card 28 is performed only during data communication. The power supply of the personal computer is supplied to the circuit of the terminal device, and when the data communication is completed, the switch element 32 is turned off, and the power supply to the circuit of the data communication terminal device for the mobile phone is cut off.

In the EEPROM of the memory, the telephone number of the associated mobile phone is stored as the ID number of the terminal device.

As is apparent from comparison with the configuration example of the functions of the conventional data communication terminal device shown in FIG. 4, the data communication terminal device of the present embodiment has a battery and a charge control and a power saving control during the power supply function. The power supply stabilization circuit can be driven by power supply from an external device such as a personal computer, and a display circuit that displays the dial number and the received signal level is provided. The display has a data bus configuration that enables the transmission and reception of dials and reception sensitivity signals with external devices such as a personal computer, using the storage and display functions of the personal computer, and a configuration that allows the transmission and reception of related control data inside the device. Codec circuits for compression and decompression of audio signals and audio circuits such as microphones and speakers are replaced by data bus circuits that transmit and receive digital signals to and from a personal computer. To configure the read function of the data file from the sending or an external database of the personal computer inside of the data file.

In the device of this embodiment, when performing data communication, the telephone number stored in the EEPROM is sent to the network side of the base station as the ID number of the terminal device. Then, as shown in FIG. 5B, an operation combining the ID number and the random number using the random number R is performed on both the terminal device side and the network side.
When the calculated value calculated on the network side matches the calculated value calculated on the terminal device side, the terminal device is recognized as a legitimate device and data communication is enabled. When data is transmitted from the data communication terminal device side, the data input on the personal computer 27 side is transmitted to the interface circuit 30.
Via the TDMA synchronization control circuit 15,
After being modulated by the modulator 16, the 8-bit D / A converter 17
Is converted to an analog signal by the low-pass filter 18.
To the RF module 20 through the antenna 21
Sent by

The data communication system of this embodiment will be described more specifically as follows. When the control application software of the mobile phone module is started, a ready signal (ready command) is received from the personal computer 27,
The data communication terminal device (module) is powered and powered,
The module circuit is activated.

Then, the telephone number of the other party is searched from the telephone number search database inside the personal computer, and the PCMCI is searched.
A, such as dial number data and a base station, terminal unique information (ID number) confirmation, and a reception sensitivity signal are exchanged between a personal computer and a mobile phone module via an IO bus configured based on a PC card interface standard such as A. . The result is transmitted to the personal computer as a command.

Confirmation of the reception sensitivity and a dial transmission (calling) signal are treated as commands, and the decoding is controlled by the CPU 8 inside the mobile phone data communication terminal device (inside the module).

After receiving the dial signal as a call command, the data communication terminal device (module unit) communicates with the base, confirms the call of the other party, and confirms the line connection. Feedback of a call result such as busy or no response is also returned to the personal computer 27 as a command.

Normally, a general terminal device monitors and stores location registration information from a base station and monitors a call signal. However, this module section omits this function and only registers a base station location when a call is made. The information is taken in, the same terminal ID as that of the terminal being used is transmitted, and the registration is confirmed.

When communication with the base station becomes possible, the establishment of the link is fed back to the personal computer, and the mode is shifted to the personal computer communication mode or the application mode such as facsimile communication, Internet communication, etc., and the data communication module detects an error packet. And correction control to maintain the data communication function.

When the data communication is completed, a line release command is received from the personal computer application software, the line is released, and power supply power is cut off, and the communication is terminated. These control commands are composed of, for example, AT commands (based on the USA, Hayes and Microcom standards), which have been frequently used in analog modems, and can also match with communication application software frequently used in the market.

The data communication terminal device of this embodiment is
Since it is formed on the C card 28 and inserted into the slot of the personal computer 27 and used integrally with the personal computer 27, various data communication methods can be performed by the application software of the personal computer 27. Personal computer communication (communication of business and personal e-mail, text, graphics, image data) while traveling outdoors, Internet communication (data communication such as text, voice, image, fax, etc.) and intranet communication (text, voice Data communication such as image, fax, etc.) and fax data communication. In a multimedia service network such as the Internet, data such as characters, graphics, images, and voices are digitized and packetized and transmitted. Each of these is controlled by application software that performs transmission control and data analysis. Use of-bis is possible.

The data communication terminal device of this embodiment is
Although the voice communication function is omitted, the voice communication function is provided on the personal computer 27 side, and by using the voice communication function on the personal computer 27 side, the voice communication function is performed using the data communication terminal device of the present embodiment. Communication can be performed. In this case, the personal computer converts the audio signal from an analog signal to a digital signal, and applies the digital signal to the interface circuit 30 from the personal computer 27 to enable the audio communication.

Although the data communication terminal device (this module) of this embodiment omits the function of voice communication as described above, voice service by packet communication becomes possible, and the circuit and functions of this module are omitted. Miniaturization,
The function deterioration due to power saving and low cost is complemented by the sophistication of the service network connected to the software on the personal computer, and advanced functions beyond the omitted functions can be provided. In other words, this module allows the user to use more advanced services at only the line connection cost (call charge), which is extremely effective in spreading and expanding the convenience of the mobile phone function.

The data communication terminal device of this embodiment is mainly used as a device dedicated to data transmission, but can be carried together with a portable telephone having the same telephone number. The mobile position is detected on the network by an automatic position transmission signal (automatic position registration signal) emitted from a mobile phone, and a signal (received signal) from the other party is supplied to the detected position area, thereby enabling voice and various data. Can be received. Therefore, both transmission and reception can be performed using the data communication terminal device of the present embodiment. By carrying the mobile phone and the data communication terminal device of the present embodiment together, a slave unit between the conventional mobile phone terminal device An inter-communication function is possible, and a local area communication is also possible by a communication function between slave units that performs data communication between a mobile phone terminal and a terminal dedicated to data communication.

In this embodiment, the data communication terminal is associated with the mobile phone, and the ID number of the data communication terminal for the mobile phone is given by the same number as the telephone number of the mobile phone.
Although the data communication terminal device omits the automatic location transmission function for location registration, when data communication is performed using the data communication terminal device of the present embodiment, the data communication terminal Whether or not the terminal device is a legitimate device can be determined based on the ID number (telephone number) sent from the device, and data communication can be performed without any trouble using the data communication terminal device.

When a plurality of data communication terminals are used in association with one portable telephone, the data communication terminals do not have an automatic position transmission function, and therefore, are not transmitted from each data communication terminal. The automatic location transmission signal for automatic location registration is not added to the network side of the telephone base station, and the automatic location transmission signal for automatic location registration is added only from the mobile phone. If you receive a call from another subscriber,
Since it is sufficient to transmit a signal to the area where the mobile phone is moved, even if there are a plurality of data communication terminal devices on the network side, terminal management and charging management using the database can be performed without any trouble.

As described above, in the present embodiment, since the telephone number of the portable telephone and the telephone number (ID number) of the data communication terminal associated with the portable telephone are given by the same number, the data communication terminal When using, only the call fee (line connection fee) is required, and the basic fee is charged only to the mobile phone, not to the data communication terminal device, so it is possible to greatly reduce the cost of using the data communication terminal device Becomes For this reason, the spread of data communication terminal devices is expected, and with this, the use of telephone calls increases significantly, which contributes to an increase in profits on the telephone base station side.

Further, by carrying the data communication terminal device of this embodiment together with a portable telephone having the same telephone number (ID number), not only data transmission but also data reception using the data communication terminal device can be performed. This makes it possible to transmit and receive data smoothly, and as described above, it can be used in the same manner as the conventional inter-slave communication function between mobile phone terminals, and the inter-slave communication function enables local area communication. It is possible.

Further, the data communication terminal device of the present embodiment has a very small device configuration because the voice communication function provided in the conventional data communication terminal device is omitted and the automatic position transmission function is omitted. It becomes simple, and each circuit of the data communication terminal device can be efficiently formed on the PC card, and the integrated use with the personal computer 27 becomes easy.

In this manner, the microphone 3, the speaker 4, the 14-bit A
The voice communication function of the / D converter 12, the 14-bit D / A converter 13, etc., the automatic position transmission function as described above, the keypad 5, the sub CPU 7, the liquid crystal display device 6, the battery 10,
Since the components such as the DC-DC converter 11 and the like are omitted, when used as a terminal device integrated with the personal computer 27, the size and weight can be reduced, one-handed operation is facilitated, and the function as a dedicated data communication device is achieved. This is advantageous.

Further, when the data communication is not performed, the switch element 32 is turned off by the switch control circuit 31 to cut off the power supply to the data communication terminal device. Can be greatly reduced.

The present invention is not limited to the above-described embodiment, but can adopt various embodiments. For example, in the above embodiment, the same telephone number as that of the mobile phone is written and installed on the data communication terminal side, but the telephone number writing memory (E) is written on the data communication terminal side.
When the telephone number borrowing permission / non-permission control unit 40 of the mobile phone outputs a communication permission signal to the data communication terminal device side, the telephone number of the mobile phone stored in the mobile phone side is stored in the EPROM. The telephone number may be transferred and written from the portable telephone side to the EEPROM side of the data communication terminal device via 41 and 36. In this case, in order to secure the confidentiality of the telephone number of the mobile phone, it is necessary to transfer the telephone number of the mobile phone from the mobile phone to the data communication terminal device by encryption.

[0060]

According to the present invention, one mobile telephone is associated with one or more data communication terminal devices, and external communication by the data communication terminal device is enabled by using the same telephone number as the mobile telephone as the telephone number. In the case where external communication is performed on the data communication terminal device side, the mobile phone side requests permission as to whether or not the external communication may be performed, and the data communication terminal device is permitted only when permission is obtained from the mobile phone side. When the external communication is enabled by the data communication terminal device, the mobile phone turns off the external communication function when the external communication function is performed, and when the external communication ends on the data communication terminal device, Since the external communication function of the data communication terminal is turned off and the external communication function of the mobile phone is turned on, the mobile phone and the data communication terminal are connected to the same telephone. It is performed external communication with at No., since the mobile phone and double communication with the data communication terminal device side is prevented, thereby enabling external communication between without any problem smoothly area.

Moreover, the database on the telephone base station side requires only a charge for the line connection use fee for the data communication terminal device without changing the terminal management and charge database at all, that is, a basic charge is required. It is possible to use the data communication terminal device for a mobile phone without a large cost. These cost savings will lead to an increase in the spread of data communication terminals for mobile phones, and are expected to increase call charges. With the increase in call charges, it will be possible to contribute to an increase in revenue at the telephone base station side. Become.

Further, since the power saving function is added to the data communication terminal device of the communication device, the application of power to the data communication function is stopped except during data communication, so that unnecessary power consumption can be prevented. The power saving of the communication terminal device becomes possible, and its economic benefit is extremely large.

Further, in a configuration in which a data communication function is formed on a PC card, and the PC card is mounted on a personal computer to perform data communication, characters and graphics can be written using application software of the personal computer. It is possible to communicate data such as images, voices, and the like in various forms such as personal computer communication, Internet communication, intranet communication, and fax data communication.

Further, according to the present invention, by carrying the data communication terminal device together with the mobile phone, the reception of data is detected by the automatic incoming call receiving function of the mobile phone, and the other party outside the area is detected using the data communication terminal device. Can be received, and data transmission and reception can be performed without any trouble. In addition, since communication between the data communication terminal devices becomes possible within the same area, local area communication between the data communication terminal devices becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of a communication device according to the present invention.

FIG. 2 is a block diagram showing a configuration of an embodiment of a data communication terminal device constituting the communication device of the present invention.

FIG. 3 is an explanatory diagram of a communication procedure using the communication device of the embodiment.

FIG. 4 is a block diagram of a conventional data communication terminal device.

FIG. 5 is an explanatory diagram of a general communication service system between a telephone terminal device and a network of a telephone base station.

FIG. 6 is an explanatory diagram of a conventional general public communication procedure.

FIG. 7 is an explanatory diagram of a conventional general inter-child-unit communication procedure.

[Explanation of symbols]

 35 communication permission request signal output unit 36 communication function in data communication terminal device side communication area 37 data communication terminal device communication start / stop control unit 38 communication end notification unit 39 external communication function 40 telephone number borrowing permission / inhibition control unit 41 mobile phone side area Internal communication function 42 Mobile phone side communication start / stop control unit 43 External communication function

Claims (4)

[Claims] 1. A mobile phone having an external communication function between areas and one or more data communication terminal apparatuses having an external communication function between areas are associated with each other, and the mobile phone and each data communication terminal apparatus are associated with each other. A communication device for performing communication with the outside using non-simultaneously, wherein a direct in-area communication function is provided between each of the data communication terminal devices and the mobile phone, and the data communication terminal device side A communication permission request signal output unit for outputting a communication permission request signal for performing external communication using the telephone number of the mobile phone to the mobile phone; A data terminal-side communication start / stop control unit that turns on the external communication function of the communication terminal device and turns off the external communication function when the external communication ends, and a mobile phone side when the external communication using the mobile phone number ends. A communication end notification unit that outputs a communication end signal to the mobile phone side, and when a communication permission request signal is added from the data communication terminal device to the mobile phone itself, a communication disable signal is output when the mobile phone itself is in communication. A telephone number borrowing permission / non-permission control unit that applies a communication license signal using the telephone number of the mobile phone to the data communication terminal device when the communication device is not communicating; and outputs the communication license signal to the data communication terminal device. A mobile terminal-side communication start / stop control unit that turns off the external communication function of the mobile phone and turns on the external communication function of the mobile phone when the communication end signal is applied from the data communication terminal device. Communication device. 2. The communication device according to claim 1, wherein the communication system of the intra-area communication function between the mobile phone and the data communication terminal device is configured by at least one of a wired, wireless, and infrared. 3. The communication device according to claim 1, further comprising a power saving function for stopping application of power to the external communication function except during external communication of the data communication terminal device. . 4. The external communication function of the data communication terminal is P
2. A communication system formed on a C card, wherein the PC card is mounted on a personal computer to perform external communication.
A communication device according to claim 2 or claim 3.