JPH1168993A - Data communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a data communication equipment consisting of a digital portable telephone set and an information terminal and to simplify circuit constitution. SOLUTION: An information terminal portable telephone set 1 is provided with a telephone number housing ROM 4, a channel codec controller 6 and a PCMCIA/86-system interface circuit 13. An information terminal 3 is provided with CPU 9 for an information terminal 9 and a PCMCIA/86-system interface circuit 15. The circuit 13 is obtained by inserting a 86-system interface circuit into a PCMCIA interface circuit of a conventional technique. The circuit 15 is similarly constituted and CPU 9 controls the circuit 13 within the telephone set 1 and the circuit 15 within the terminal 3.

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, and more particularly to a data communication apparatus which is constituted by an information terminal such as a digital cellular phone and a computer, and performs data communication via radio.

[0002]

2. Description of the Related Art In recent years, the spread of mobile phones has been rapidly increasing.
Mobile communication is becoming popular. With the spread of these,
There is an increasing demand for performing data communication such as image data and e-mail using a mobile phone regardless of location.
Therefore, a mobile phone having a PCMCIA interface, which is a standard interface such as a computer, built into the mobile phone has begun to be sold. In recent years, the mobile phone has been changed from an analog system to a digital system in recent years. In data communication in the analog system, a conversion device for data communication was required. However, in the digital system, since the transfer of data is a digital signal, this conversion device is not required, and instead, a PCMCIA interface has been built into a mobile phone.

[0003] Each of these portable telephones and information terminals is referred to as PCM.
Data communication becomes possible by connecting cables via the CIA interface.

FIG. 4 shows a digital portable telephone (PHS).
) And an example of connection with an information terminal such as a computer.
FIG. 5 shows a basic configuration of a digital cellular phone and an information terminal.

[0005] Usually, when data communication is performed in the configuration as shown in FIG. 4, a connection cable 2 is required. In order for the connection cable 2 to be effective, a PCMCIA interface circuit 8 in the digital cellular phone 1 'and a PCMCIA interface circuit 11 in the information terminal 3' are required.
Must be matched. This alignment process is performed
PCMCIA interface control CPU7 and PCMCI
A interface control unit 10. The PCMCIA interface control unit 10 indicates software in the information terminal CPU 9.

In the configuration shown in FIG. 4, when data is received from another information terminal and data communication is started, the digital cellular phone 1 'is used.
As a receiving process, the communication protocol control CPU 5 reads the contents of the telephone number storage ROM 4 and reads the received data sent from another information terminal from the channel codec control device 6 to perform authentication. After the authentication is established, the channel codec control device 6 determines whether the received data is voice data or data for data communication, and reports it to the communication protocol control CPU 5. If it is data for data communication, the communication protocol control CPU 5 reports the data to the PCMCIA interface control CPU 7, operates the PCMCIA interface circuit 8, and receives data for data communication from the channel codec control device 6. The received data is transmitted to the PCMCIA interface circuit 1 via the connection cable 2.
1 is transmitted. The data taken into the information terminal 3 'is processed by the information terminal CPU9.

When transmitting to another information terminal, after confirming the authentication,
It is transmitted from the information terminal CPU 9 to the PCMCIA interface circuit 8 via the PCMCIA interface circuit 11 and the connection cable 2. The PCMCIA interface control CPU 7 reports that there is data for data communication to the communication protocol control CPU 5, and the communication protocol control CPU 5 controls the channel codec control device 6, outputs the data for data communication to the radio unit, and outputs other information. Output to terminal.

[0008]

The above-mentioned prior art has the following problems.

The first problem is that, in the prior art, the digital cellular phone 1 'has a PCMCIA interface.
It has a dedicated PCMCIA interface control CPU 7 for controlling the interface circuit 8, and the set circuit configuration is large. The reason is that the cost and power consumption of a digital mobile phone are usually low, so the communication protocol control C
The PU has only the capability that only the channel codec controller can do. Therefore, the communication protocol control CPU uses PCMC
It is impossible to perform IA interface control.

The second problem is that the internal interface of the digital cellular phone and the internal interface of the information terminal are different.
Are the same 86-series interface, but are not shared. The reason is that the data communication interface is P
86 interface only with CMCIA interface
This is because there is no external input / output terminal.

An object of the present invention is to provide a data communication device which is miniaturized as a whole set and has a simplified circuit configuration.

[0012]

According to the present invention, in a data communication apparatus, a digital cellular phone is provided with a channel codec control apparatus for controlling communication and a PCMCIA / 86 interface for enabling an interface when a cable is connected. −
The information terminal includes a PCMCIA / 86-based interface control circuit connected to the mobile phone, and a CPU for the information terminal that performs communication protocol control and PCMCIA interface control.

By adding an 86-system interface between a digital mobile phone and an information terminal, a communication protocol control CP in a conventional digital mobile phone is provided.
U, PCMCIA interface control CPU can be deleted.

This is made possible by sharing the 86 system interface in the digital portable telephone and the information terminal.

Therefore, the communication protocol control CPU,
The contents processed by the PCMCIA interface control CPU can be processed by the information terminal CPU, and the number of digital cellular phone devices can be reduced and the cost can be reduced.

[0016]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a data communication apparatus according to an embodiment of the present invention comprises an information terminal portable telephone 1 and an information terminal 3 connected to each other by a connection cable 2.

The information terminal portable telephone 1 has a telephone number storage RO.
M4, channel codec control device 6, PCMCIA /
It comprises an 86-system interface circuit 13. The telephone number storage ROM 4 usually stores a PS-ID, and stores authentication data in communication processing. The channel codec control device 6 is a communication circuit physically connected to another communication terminal, and determines whether the received data is audio data or data for data communication. In transmission, the data is concealed and output to a wireless unit (not shown). PCMCI
The A / 86 interface circuit 13 is a data communication means according to the present embodiment, which is a modification of the prior art, and is provided in the PCMCIA interface circuit (PCMCIA interface circuit 8 in FIG. 5) of the prior art. This is a circuit with an interface circuit inserted. The PCMCIA / 86 interface circuit 15 in the information terminal 3 also has the same configuration. The information terminal CPU 9 uses the PCMCIA / 86 interface circuit 13 in the information terminal mobile phone 1 and the PCMCIA / 86 interface circuit in the information terminal 3. The / 86 system interface circuit 15 is controlled. This information terminal CP
As U9, it is necessary to mount a CPU with high processing capacity. The information terminal CPU 9 exclusively processes the PCMCIA interface control unit 10 and the communication protocol control unit 14. The PCMCIA interface control unit 10 and the communication protocol control unit 14 are software.

As described above, the PC in the information terminal portable telephone 1 is provided.
By adding the MCIA / 86 interface circuit 13 to the PCMCIA / 86 interface circuit 15 in the information terminal 3, the information terminal 3 has the initiative. Control CPU
(Communication protocol control CPU 5 in FIG. 5) and PCMCIA
The interface control CPU (PCMCIA interface measurement CPU 7 in FIG. 5) can be eliminated, and the information terminal mobile phone 1 can be reduced in size, devices, and cost.

Next, the operation of this embodiment will be described in detail. First, communication processing at the time of reception will be described with reference to FIG. First, the information terminal mobile phone 1 and the information terminal 3 are connected by the connection cable 2 to form a communication terminal (step 2).
1). Next, when a reception signal is input from another information terminal to the channel codec control device 6, the channel codec control device 6 uses the 86-system interface and instructs the information terminal CPU 9 that there is a reception signal (step 2).
2). The communication protocol controller 14 in the information terminal CPU 9 uses the 86-system interface to authenticate the received signal acquired by the channel codec controller 6 (step 23). In the authentication process, if authentication is not possible, the communication is disconnected (step 24). After the authentication process, the communication protocol control unit 4 determines whether the received data is voice data or data for data communication (step 25). If it is voice data, the communication protocol control unit 14 uses the 86-system interface, instructs the channel codec control device 6 to be voice data,
The speaker / microphone is enabled, and voice processing is performed (step 26). PCMCIA for data communication data
The interface control unit 10 uses the PCMCIA interface to fetch the data for data communication output from the channel codec control device 6 into the information terminal CPU 9 (step 27). Next, the communication protocol control unit 14 and the channel codec controller 6 determine the end of the data communication data to be fetched (step 28). If there is data to be fetched, the data is read (return to step 27). When the data to be captured is completed, the end of the data is reported from the channel codec control device 6 to the communication protocol control unit 14 using the 86-system interface, and the idle state is entered (step 29).

Next, communication processing at the time of transmission will be described with reference to FIG. First, the information terminal mobile phone 1 is connected with the connection cable 2.
And the information terminal 3 to form a communication terminal (step 31). Next, the communication protocol control unit 14 instructs the channel codec control device 6 to perform transmission processing using the 86-system interface. This transmission process is limited to only data for data communication (step 32). In the transmission processing, the channel codec control device 6 confirms that it has been connected to another information terminal, and informs that it has been prepared by the 86 system interface (step 33). The communication protocol control unit 14 recognizes that data communication is possible, and
It reports to the MCIA interface controller 10 that data transfer is possible, and transfers data for data communication to the channel codec controller 6 using the PCMCIA interface (step 34). The channel codec control device 6 processes the transferred data into transmission data and outputs it to the radio unit (step 35). The end of the data communication data is confirmed by the communication protocol control unit 14 (step 3).
6) If the data for data communication has not been completed, the channel codec control device 6 is activated, and data transfer and data output processing are performed (return to step 33). When the data for data communication has been completed, an idle state is set (step 37).

[0022]

As described above, according to the present invention, the communication protocol CPU and the PCMCIA interface in the digital mobile phone are provided by adding an 86-system interface between the digital mobile phone and the information terminal. -The software control CPU can be incorporated in the information terminal as software, so that downsizing, device reduction, and cost reduction can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a data communication device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a communication process (at the time of reception) in the data communication device of FIG. 1;

FIG. 3 is a flowchart showing a communication process (at the time of transmission) in the data communication device of FIG. 1;

FIG. 4 is a connection diagram between a digital cellular phone and an information terminal in a conventional data communication device.

FIG. 5 is a configuration diagram of the data communication device of FIG. 4;

[Explanation of symbols]

 1, 1 'information terminal mobile phone 2 connection cable 3, 3' information terminal 4 telephone number storage ROM 5 communication protocol control CPU 6 channel codec controller 7 PCMCIA interface control CPU 8 PCMCIA interface circuit 9 information terminal CPU 10 PCMCIA interface control unit 11 PCMCIA interface circuit 13 PCMCIA / 86 system interface circuit 14 Communication protocol control unit 15 PCMCIA / 86 system interface circuit 21-29, 31-37 Step

Claims (2)

[Claims] 1. A data communication apparatus comprising a digital mobile phone and an information terminal, wherein the mobile phone is provided with a channel codec control device for controlling communication and a PCMCIA / 86 system for enabling an interface when a cable is connected. An interface circuit, wherein the information terminal includes a PCMCIA / 86-based interface control circuit connected to the mobile phone, and a CPU for the information terminal that performs communication protocol control and PCMCIA interface control. Data communication device. 2. The communication protocol control unit of the information terminal CPU, when instructed by the channel codec control device of the mobile phone that there is a received signal, uses the 86-system interface to perform the channel codec control. Perform authentication processing of the received signal obtained in the device, if authentication is successful, determine whether the received data is audio data or data for data communication, if the audio data, the channel codec control device PCMCIA of the information terminal CPU, instructing that the data is audio data, performing audio processing, and instructing the channel codec control apparatus to perform transmission processing using the 86-system interface.
If the received data is data for data communication, the interface control unit uses the PCMCIA interface to fetch the data for data communication output from the channel codec control device into the information terminal CPU,
2. The data communication according to claim 1, further comprising, when notified by the communication protocol control unit that data transfer is possible, transferring data for data communication to the channel codec control device using a PCMCIA interface. apparatus.