JP3142432B2 - Data communication device, mobile communication device, information processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication apparatus, a mobile communication apparatus using a radio transmission path between a base station and a mobile station .
The present invention relates to an information processing device .

[0002]

2. Description of the Related Art Conventionally, data communication using a public telephone network has been realized by, for example, a system configuration as shown in FIG. The communication system shown in FIG. 8 is one in which an information processing device such as a personal computer (hereinafter abbreviated as a personal computer) 1 is connected to a public line 3 via a modem device 2 for data communication. The modem device 2 includes a modem controller 4, a modem (modulator / demodulator) 5, an NCU (Networ
k Control Unit) 6. The personal computer 1 is connected to a modem controller 4. The modem 5 modulates and demodulates data transmitted and received between the modem controller 4 and the NCU 6.

[0003] The personal computer 1 accesses a register group 4a provided in the modem controller 4 based on communication software for data communication.
It controls the NCU 6 for controlling the input and output of data to and from the modem 5 and the connection to the public line 3.

In the communication system having such a configuration, the modem controller 4 controls the NCU 6 to control connection with the public line 3 and perform transmission and reception. By the way, in recent years, as a next-generation mobile telephone using digital signals instead of a telephone using analog signals, a communication system using a digital cordless telephone, that is, a personal handy phone (hereinafter abbreviated as PHP) has been planned. I have.

[0005] In PHP, a small-output PHP slave (mobile station) such as a cordless telephone slave is used not only at home but also at home.
By providing a public base station at a station, a shopping district, a public telephone box, or the like, it can be used outdoors.

[0006] Since PHP performs communication using digital signals, it is possible to perform data communication services that cannot be realized by telephones using analog signals, for example, data communication from outside. In realizing this service, a configuration has been considered in which a modem function corresponding to the modem device 2 is provided on the public base side in order to improve portability when used outdoors.

[0007]

SUMMARY OF THE INVENTION However, PHP
There are the following problems in the communication system using the communication method. Since the modem function is provided in the public base station, for example, in the case of performing personal computer communication, communication software for controlling a data communication modem conventionally connected by wire cannot be used as it is.

That is, in the communication system shown in FIG.
There are an online mode in which the modem controller 4 outputs data from the personal computer 1 to the line 3 through the modem 5, and a command mode in which the modem controller 4 receives data from the personal computer 1 as data for controlling the modem 5 and does not output the data to the line 3. .

Generally, in the online mode, the personal computer 1 transmits a special data string consisting of a character string of "++" called an escape code and a guard time before and after, for example, one second (a state in which nothing is transmitted). To command mode.

However, if the modem function is on the side of the base station connected by the radio communication path, the above-described special data sequence is transmitted from the personal computer 1 to the base station via the mobile station by communication between the mobile station and the base station. There was a problem that a case could not be notified to the station.

Further, the register group 4a of the modem controller 4 cannot be directly accessed from the personal computer 16 by the parallel bus, so that the modem cannot be controlled.

The present invention has been made in view of the above-mentioned circumstances, and a data communication apparatus capable of executing data communication by an information processing apparatus by mobile communication using a wireless transmission path via a mobile station. It is an object to provide a communication device and an information processing device .

[0013]

SUMMARY OF THE INVENTION The present invention provides a connection to a public line.
A modem function for performing continuous data communication, and the modem
No. 1 for storing data for controlling data communication
A register group and data stored in the first register group
Control data communication in the modulation / demodulation function based on
To the base station having the first data communication control means.
The data is transmitted via a mobile station that performs wireless communication with the base station.
A data communication device for transmitting and receiving data,
An information processor for performing data communication via the modulation / demodulation function of the station
A second group of registers to be accessed by the
Frames data stored in a group of
Enter the mobile station to input / output to / from the first register group of the station.
Having second data communication control means for performing output
It is characterized by. Further, the second data communication control means includes:
The modulation and demodulation function of the base station from the information processing device
An online module that performs data communication via the public line
Command to control the modulation / demodulation function from the code
Depending on the data input requesting a switch to the mode,
Create a frame requesting mode switching, and
Output to said mobile station for output to a station.
You.

The present invention also relates to a data communication system connected to a public line.
A modulation / demodulation function for communication, and a data communication of the modulation / demodulation function.
Register group for storing data for controlling communication
And the data stored in the first register group
First data for controlling data communication in the modulation / demodulation function
And a base station having communication control means.
A mobile communication device that performs wireless communication between
Information for performing data communication via the modulation / demodulation function of the base station
A second group of registers accessed by the processing unit;
The data stored in the register group is framed to
Enter the mobile station to input / output to / from the 1 register group of the local station
Having second data communication control means for performing output
It is characterized by. The present invention also relates to a data communication system connected to a public line.
Modulation / demodulation function for performing data communication and data of the modulation / demodulation function
First register group for storing data for controlling communication
And the data stored in the first register group
First data for controlling data communication in the modulation / demodulation function
And a base station having communication control means.
Data transmission and reception via mobile stations performing wireless communication between
Performing the recovery of the base station
Stores data for data communication via key function
A second register group, and a second register group stored in the second register group.
The first register of the base station
Second data input / output to / from the mobile station to input / output to / from the
Data communication control means.

[0015]

According to such a configuration, the contents of the register group directly accessed by the information processing apparatus for controlling the modulation / demodulation function are framed and transmitted to the base station having the modulation / demodulation function actually connected to the line. Thus, data communication can be performed using the modulation / demodulation function of the base station through the mobile station under the control of the information processing device.

When the modulation / demodulation function is in the first mode (online mode), a request for switching to the second mode (command mode) (escape code "++++")
Is output from the information processing apparatus, a frame indicating that this request has been made is notified to the base station side, so the data string will be transmitted as it is. In such a case, there is no possibility that the data string is divided and the notification is not correctly given.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of the mobile communication system in the present embodiment. As shown in FIG.
In this embodiment, a personal handy phone (hereinafter referred to as PHP
Abbreviated as).
A wireless communication function is performed between the HP slave device 10 and the base station 12.

The base station 12 is connected to the public line 14, and when a call is made from the PHP slave unit 10, the public base station 1
2. Talk with the other party via the public line 14. In addition, data communication by a personal computer (hereinafter abbreviated as a personal computer) 16 is possible via the PHP slave device 10.

The personal computer 16 and the PHP slave device 10 are connected by a connection cable 19 via a data communication device 18. FIG. 2 shows a PHP slave device 10 and a data communication device 1
8 is a block diagram showing the configuration of FIG. As shown in FIG.
The PHP slave device 10 includes a microcomputer 20, a radio unit 21, an ADP
A CM unit 23, a receiver 24, a button input unit 25, a connector unit 28, and an antenna 29 are provided.

The microcomputer 20 controls each part constituting the PHP slave device 10. The microcomputer 20 receives data from the personal computer 16 input from the connector unit 28,
Button input unit 2 when dial button is pressed
The telephone function is controlled in accordance with the data input from the terminal 5.

The radio unit 21 is connected to an antenna 29, and transmits and receives data to and from the base station 12 via the antenna 29 according to a predetermined protocol. The wireless unit 21 inputs and outputs data transmitted to and received from the base station 12 to and from the ADPCM unit 23.

The ADPCM unit 23 is provided between the radio unit 21 and the receiver 24 and has an ADPCM (Adaptive Differe
High-efficiency compression is performed by ntial Pulse Code Modulation (adaptive differential pulse code modulation). ADPC
M unit 23 converts voice data (analog voice signal) to be transmitted to base station 12 into a digital voice signal when making a voice call, and converts the digital voice signal received via radio unit 21 into an analog voice signal. And output to the receiver 24. The ADPCM unit 23 is turned on / off under the control of the microcomputer 20. ADPCM
The voice signal path (voice call) and the data signal path (data communication) are switched by turning on / off the unit 23.

The receiver 24 is for making telephone calls, and is provided with a speaker and a microphone. The button input unit 25 controls input of a dial button (not shown) provided for operating the telephone function of the PHP slave device 10. The button input unit 25 outputs data corresponding to the pressed one of the dial buttons to the microcomputer 20. The dial buttons are used when dialing from the PHP slave unit 10, and include various function buttons such as an extension line call and an outside line call in addition to the number buttons from 0 to 9 and "*" and "#" buttons. In.

The connector section 28 is an interface for connecting to the personal computer 16 (controller section 18) via the connection cable 19 to the PHP slave unit 10. Data for data communication is sent directly to the wireless unit 21 via the connector unit 28, and PHP
A control command for controlling the slave unit 10 is a microcomputer 20.
Will be notified.

The antenna 29 is for transmitting and receiving signals to and from the base station 12. Data communication device 1
Numeral 8 is for performing signal control between the personal computer 16 and the PHP slave device 10 in order for the personal computer 16 to perform data communication using mobile communication.

The data communication device 18 includes the error correction unit 3
0, the controller section 32. The error correction unit 30 receives the data transmitted and received between the data link unit 46 provided in the base station 12 via a wireless function (wireless transmission path) between the PHP slave device 10 and the base station 12. It performs output control and the like. The error correction unit 30
An error correction process for correcting an error generated due to a change in the communication state between the PHP slave device 10 and the base station 12 and the like, and correct data input and output are performed by retransmission of data. Usually, when the communication condition is poor, the base station 12
The actual data amount per unit (frame) transmitted and received between the error correction units 46 is divided and reduced.

The controller unit 32 is a data communication device 1
8 for inputting and outputting data for data communication with the personal computer 16. The controller unit 32 includes a register group 33. The personal computer 16 controls data communication (modem function) by accessing the register group 33. Details will be described later.

The data communication device 18 is, for example, the personal computer 1
6 is configured as an IC card type connectable to a card interface (IC card slot) provided in the IC card 6. The card interface is, for example, JEIDA (Japa
n Electronic Industry Development Association) /
PCMCIA (Personal Computer Memory Card Intern)
a. Association).
Also, other connection methods using RS-232C or the like may be used.

FIG. 3 is a block diagram showing a detailed configuration of the base station 12. As shown in FIG. As shown in FIG. 3, the base station 12 includes a controller 40, a radio unit 41, an ADPCM unit 43, an antenna 44, and a data communication unit 45. The data communication unit 45 includes an error correction unit 46, a modem controller 47, and a modem 48. Also,
The modem controller 47 is provided with a register group 49.

Base station 12 is basically configured to implement a function for performing voice communication, and
An NCU (not shown) for performing a connection process with the controller is controlled by the controller 40. When performing data communication via the base station 12, the data communication unit 45 is connected to the base station 12.
It can be realized by adding it inside.

The controller 40 controls each unit constituting the base station 12. The controller 40 controls the ADPCM unit 43 in the voice communication path and an NCU (not shown) that performs connection processing with the public line 14, and also includes a modem controller 47 and an error correction unit when a data communication unit 45 is provided. The base station 12 is controlled according to the data from the base station 46.

The radio section 41 is connected to an antenna 44, and the PHP slave (base station) 10
Data transmission / reception is performed with a predetermined protocol. The wireless unit 41 transmits data transmitted / received to / from the PHP slave device 10 to the ADPCM unit 23 (during a voice call).
Alternatively, input and output are performed with the error correction unit 46 (during data communication).

The ADPCM unit 43 is provided between the radio unit 41 and the public line 14, and performs high-efficiency compression by ADPCM (Adaptive Differential Pulse Code Modulation). A
The DPCM unit 43 converts voice data (analog voice signal) to be transmitted to the PHP slave unit 10 into a digital voice signal when making a voice call, and converts the digital voice signal received via the radio unit 41 into an analog voice signal. The signal is converted into a signal and transmitted to the public line 14. The ADPCM unit 43 is turned on / off under the control of the controller 40. By turning on / off the ADPCM unit 43, a voice signal path (voice call) and a data signal path (data communication) are switched.

The antenna 44 is for transmitting and receiving signals to and from the PHP slave device 10. The data communication unit 45 is a function for performing data communication such as personal computer communication and facsimile communication, and is used by being added to the basic function of the base station 12 for voice communication.

The error correction unit 46 transmits data to and from the error correction unit 30 provided in the controller unit 18 via a wireless function (wireless transmission path) between the PHP slave 10 and the base station 12. It performs input / output control and the like. The error correction unit 46 performs an error correction process for correcting an error generated due to a change in the communication state between the PHP slave device 10 and the base station 12 or the like, and performs correct data input / output by retransmission of data. Normally, when the communication state is poor, the actual data amount per unit (frame) transmitted and received between the error correction units 30 of the PHP slave device 10 is divided and reduced.

The modem controller 47 has a register group 4
9 controls the modem 48 based on the data stored in the modem 9. The register group 49 includes the data communication device 1
8 stores the same data as the data stored in the register group directly accessed by the personal computer 16.

The modem 48 is provided between the modem controller 47 and the public line 14, and the modem controller 4
7, which modulates and demodulates data for data communication.

Next, the operation of this embodiment will be described.
First, a communication path for performing normal voice communication will be described. In this case, the AD of the
The PCM unit 23 is turned on under the control of the controller 20 according to the input from the button input unit 25. The ADPCM unit 43 of the base station 12 is also turned on by the controller 40.

The voice input from the receiver 24 (microphone) of the PHP slave 10 becomes an analog voice signal,
The signal passes through a series of voice communication paths that are digitized by the M unit 23, modulated by the radio unit 21, and transmitted to the base station 12.

The base station 12 uses the antenna 44 to
A signal from the P slave 10 is received, demodulated by the radio unit 41, and converted into a digital audio signal. The ADPCM unit 43 converts the digital audio signal from the wireless unit 41 into an original analog audio signal, and sends the original analog audio signal to the destination via the public line 14.

Next, a case where data communication is performed between the personal computer 16 and the other party connected to the public line 14 will be described. When transmitting data from the personal computer 16,
This is performed by accessing the register group 33 of the data communication device 18. The controller unit 32 is a personal computer 1
The data inputted from 6 to the register group 33 is framed and output to the error correction unit 30 together with the number of bytes of the frame.

The error correction unit 30 transmits the data input to the register group 33 to the base station 12 via the PHP slave (mobile station) 10. The base station 12 includes a radio unit 41,
The received data is sent to the controller 40 via the error correction unit 46. The controller 40 includes an error correction unit 46
Analyzes the frame sent from the
Access the appropriate register of the register group 49 in 7.

The modem controller 47 controls the modem 48 based on the contents of the register and transmits data to the connected modem via the public line 14. Conversely, in the case of data reception, the data framed and transmitted by the controller 40 of the base station 12 is transmitted to the PHP slave unit (mobile station) 1.
0 is received by the data communication device 18. In the data communication device 18, the received data is analyzed by the controller unit 32 and written into an appropriate register of the register group 33. The personal computer 16 accesses the register group 32 and receives data from the data communication unit 45.

Next, the details of the controller 32 of the data communication device 18 will be described. As shown in FIG. 4, the controller 32 includes a CPU 32a, a timer 32b,
The OM 32c and the buffer 32d are connected by a bus 32e. Further, the bus 32e and the register group 33 are connected. The register group 33 includes a transmission buffer register 33a, a reception buffer register 33b, a modem control register 33c, and a line status register 33d. Note that the register group 33 shown in FIG. 4 is an example, and a register for storing other data is provided.

The transmission data input from the personal computer 16 via the parallel bus is transmitted to the transmission buffer register 33a.
And the modem control data is stored in the modem control register 33c.

The data stored in each register is stored in the CPU.
A header for distinguishing the content of data by 32a;
The frame is formed of a data string that follows, is stored in the buffer 32d, and is further transmitted to the error correction unit 30 via the bus 32e.

The frame sent from the error correction section 30 to the controller section 32 is stored in the buffer 32d. The CPU 32a refers to the header of the frame,
It is determined whether the data is received data or data indicating a line state.

The CPU 32a stores the received data in the reception buffer register 33b when the data is received, and stores the data in the line status register 33d when the data indicates the line state.

As a method of framing data, for example, the data stored in the modem control register 33c and the transmission buffer register 33a may be converted into different frames each having a different header, or they may be combined into one frame. There is a method with one frame. Other framing methods may be used.

The controller unit 32 is a personal computer 1
"++" called the escape code output from
The following processing is performed on a special data string including a character string of "+" and a preceding and following guard time of, for example, one second (a state in which nothing is transmitted).

The characters input to the transmission buffer register 33a and the guard time are monitored in advance by the timer 32b and the CPU 32a. When the escape code is input in the online mode, the CPU 32a creates a frame including only the header indicating the escape code, outputs the frame to the error correction unit 30, and deletes the escape code.

Thus, when the escape code is transmitted as it is, the data sequence of the escape code is not divided for error correction processing of the error correction unit 30 or the data sequence is not broken when retransmitted.

The base station 12 is a PHP slave (mobile station) 10
When a frame indicating the escape input via the is received, it is interpreted and the original escape code "++
A special data string including a character string “+” and a guard time is generated and output to the modem controller 47.

The modem controller 46 is connected to the personal computer 16
, The modem 48 can be shifted from the online mode to the command mode. In this way, since the personal computer 16 is directly connected by the parallel bus to the register group 33 of the controller 32 in which data for modem control is stored, the personal computer 16 accesses the registers to control the modem connected by wire. Communication software designed to perform such operations can be used as it is.

The register group 33 of the controller 32
Is a modem 48 actually connected to the public line 14.
Has the same contents as the register group of the modem controller 47 for controlling the modem 48, so that it has the same function as controlling the modem 48 directly from the personal computer 16.

In the above embodiment, the data communication device 1
8 has been described as an example of an IC card type mounted in an IC card slot of the personal computer 16, but the following embodiments shown in FIGS.

FIG. 5 shows the data communication device 1 connected to the personal computer 16.
8 is built-in. By connecting the PHP slave unit (mobile station) 10 and the personal computer 16, the base station 1
The communication can be performed by connecting to the public line 14 through the communication line 2.

FIG. 6 shows a configuration in which a data communication device 18 is built in a PHP slave unit (mobile station) 10. This gives P
By connecting the HP slave unit (mobile station) 10 and the personal computer 16, communication can be performed by connecting to the public line 14 via the base station 12.

FIG. 7 shows the data communication device 1 connected to the personal computer 16.
8 and a wireless device 50 having the functions of the mobile station 10. Thus, the personal computer 16 alone can communicate with the public line 14 via the base station 12.

The configuration shown in FIGS. 5 to 7 can simplify the device configuration. In the above embodiment, the mobile communication system in which the PHP slave device 10 is used as a mobile station has been described as an example, but the present invention can be applied to other mobile communication systems.

[0061]

As described above, according to the present invention, a data communication apparatus having a register group to which an information processing apparatus directly accesses is connected to a base station via a mobile station via a radio communication path and stored in the register group. By transmitting and receiving the data to be framed, information for controlling the modulation / demodulation function output from the information processing apparatus is notified to the modulation / demodulation function of the base station. It can be executed by mobile communication using a wireless transmission path through the mobile communication.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a PHP slave device 10 and a data communication device 18 according to the embodiment.

FIG. 3 is a block diagram showing a detailed configuration of a base station 12 in the embodiment.

FIG. 4 is a block diagram showing a detailed configuration of a controller unit 32 in the embodiment.

FIG. 5 is a diagram showing an example of a system configuration according to the present invention.

FIG. 6 is a diagram showing an example of a system configuration according to the present invention.

FIG. 7 is a diagram showing an example of a system configuration according to the present invention.

FIG. 8 is a diagram showing a configuration of a conventional data communication system.

[Explanation of symbols]

10 PHP slave unit (mobile station), 12 base station, 14 public line, 16 personal computer (information processing device), 18 data communication device, 19 connection cable, 2
0: microcomputer, 21, 41: radio section, 23, 43: AD
PCM part, 24 ... handset, 25 ... button input part, 30,
46: error correction unit, 32: controller unit, 32a ...
CPU, 32b timer, 32c ROM, 32d buffer, 33, 49 register group, 33a transmission buffer register, 33b reception buffer register, 33c
Modem control register 33d Line status register 40 Controller 45 Data communication unit 47
Modem controller, 48 ... Modem.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 102 H04Q ^7/ 00-7/38 H04M 11/00-11/10

Claims (4)

(57) [Claims] 1. A data communication system connected to a public line
Controlling the modulation and demodulation function and the data communication of the modulation and demodulation function
A first register group for storing data for
The modulation / demodulation function based on the data stored in the
Data communication control means for controlling data communication in a computer
Wireless communication with the base station having
Transmitting and receiving data via a mobile station that performs
In a communication device, a second register group accessed by an information processing device that performs data communication via the modulation / demodulation function of the base station; and data stored in the second register group is framed to enable the base station to ingredients and a second communication control means for performing input and output to the mobile station so as to output to the first register group
A data communication device, comprising: 2. A command mode for controlling the modulation / demodulation function of the base station from the information processing apparatus from an online mode for performing data communication via the public line to the modulation / demodulation function from the information processing apparatus. depending on the input data for requesting switching to, claims to create a frame for requesting the mode switching, and outputs to the mobile station so as to output to the base station
2. The data communication device according to 1 . 3. A data communication system connected to a public line.
Controlling the modulation and demodulation function and the data communication of the modulation and demodulation function
A first group of registers for storing data for
The modulation / demodulation function based on the data stored in the
Data communication control means for controlling data communication in a computer
Wireless communication with the base station having
In the mobile communication device performing the data communication, the data communication is performed through the modulation / demodulation function of the base station.
A second group of registers accessed by the information processing apparatus, and data stored in the second group of registers.
To transfer data to the one register group of the base station.
And a second communication control unit for inputting and outputting the dynamic station
A mobile communication device, comprising: 4. It is connected to a public line and performs data communication.
Controlling the modulation and demodulation function and the data communication of the modulation and demodulation function
A first group of registers for storing data for
The modulation / demodulation function based on the data stored in the
Data communication control means for controlling data communication in a computer
Wireless communication with the base station having
Information processing for transmitting and receiving data via a mobile station that performs
In management apparatus, a row of data communication via the modem function of the base station
Register group for storing data to be stored, and data stored in the second register group are framed.
To input / output to / from the first register group of the base station.
Ingredients and a second communication control means for performing input and output to the mobile station
An information processing apparatus, comprising: