JPH08265856A - Radio interface card - Google Patents

Abstract

PURPOSE: To provide the radio interface card with high convenience of use having provision for both data communication and voice communication by having only to insert the card to a card slot of a terminal equipment. CONSTITUTION: The radio interface card 10 connects to a terminal equipment making input and output of a data signal and a voice signal and sends/receives the data signal or the voice signal through a radio channel and is provided with an interface means 11 sending/receiving the data signal and the voice signal to/from the terminal equipment, a data processing means 12 conducting processing required for transmission reception of the data signal, a voice processing means 13 conducting the processing required for transmission reception of the voice signal and the data signal and the voice signal are sent/ received by connecting the interface means 11 to the terminal equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless interface card connected to a terminal device for wireless voice communication or data communication.

[0002]

2. Description of the Related Art Conventionally, as a wireless interface card, a PC card having a wireless communication function has been known. By inserting this PC card into a card slot provided in a terminal device such as a personal computer or a portable information terminal, a communication partner connected to the terminal device via, for example, a wireless base station or a public line, Wireless communication is performed with a communication partner on a specific wireless network. Such a PC
In the card, since the terminal device normally inputs / outputs a data signal for data communication, the card is configured to handle the data signal. That is, in the PC card, between the terminal device via the card slot,
A data signal and a control signal necessary for transmitting and receiving the data signal are exchanged, and a process for wirelessly transmitting and receiving the data signal is performed.

By the way, in recent years, some terminal devices have a function of inputting and outputting a voice signal for voice communication and are compatible with both data communication and voice communication. On the other hand, a PC card that is compatible with both data communication and voice communication performs a process for wirelessly transmitting and receiving a data signal and a voice signal. However, in this PC card, since the data signal and the control signal are exchanged in the card slot, the voice signal is exchanged using a dedicated interface (for example, a microphone jack).

[0004]

However, in a PC card that supports both a data signal and a voice signal, the voice signal is transmitted and received using the dedicated interface, and therefore the terminal device must be provided with the dedicated interface. For example, even if this terminal device has a function of inputting and outputting a voice signal, voice communication cannot be performed, and the function of the terminal device cannot be effectively used. Furthermore, even if a dedicated interface is provided, it cannot support both data communication and voice communication unless it is inserted into the card slot and connected to the dedicated interface, which makes it annoying to the user. Will end up.

In addition, it is conceivable that a mobile telephone and a modem adapter, which have become extremely popular recently, are used to connect them to a terminal device to support both data communication and voice communication. It requires multiple devices such as mobile phones and modem adapters. Therefore, for example, when carrying around and moving, it is necessary to carry a plurality of pieces of equipment, and the connection is not easy as compared with a PC card, so that it becomes inconvenient and difficult for the user to use. . Therefore, an object of the present invention is to provide a highly convenient wireless interface card that can support both data communication and voice communication simply by inserting it into a card slot of a terminal device.

[0006]

SUMMARY OF THE INVENTION The present invention is a wireless interface card devised to achieve the above object.
It is connected to one terminal device that inputs / outputs one or both of a data signal and a voice signal, and wirelessly transmits / receives the data signal or the voice signal to / from another terminal device. And further, interface means capable of exchanging the data signal and the voice signal with the one terminal device, and processing for transmitting the data signal received by the interface means to the other terminal device. And data processing means for performing processing for transmitting the data signal received from the other terminal device to the interface means, and transmitting the voice signal received by the interface means to the other terminal device. And processing for transmitting to the interface means the audio signal received from the other terminal device. Cormorant characterized by comprising a sound processing unit.

Also, based on a voice / data recognition means for recognizing whether the signal received from the other terminal device is the data signal or the voice signal, and a recognition result by the voice / data recognition means. A processing switching unit that switches between the data processing unit and the voice processing unit for processing the signal received from the other terminal device may be provided.

Further, it has a voice input / output means for inputting / outputting the voice signal, and a control signal input / output means for inputting / outputting a control signal necessary for transmitting / receiving with the other terminal device, A card connection unit for exchanging voice signals input / output by the voice input / output unit and control signals input / output by the control signal input / output unit with the interface unit is configured to be portable. It may be connected to another terminal device.

[0009]

According to the wireless interface card having the above-described structure, the following operation is achieved. When a wireless interface card is connected to one terminal device when transmitting or receiving a data signal or a voice signal between one terminal device and another terminal device, the interface means of the wireless interface card causes the one terminal device to operate. Connect to the device. Then, when transmitting and receiving the data signal, the data processing means performs processing for transmitting the data signal input by the one terminal device to the other terminal device, and from the other terminal device. The received data signal is processed by the one terminal device for output. Further, when transmitting and receiving a voice signal, the voice processing means performs a process for transmitting the voice signal input by the one terminal device to the other terminal device, and from the other terminal device. The received audio signal is processed by the one terminal device for output. At this time, the data signal processed by the data processing means and the voice signal processed by the voice processing means are both transmitted and received to and from one terminal device by the interface means. Therefore, by connecting the interface means to one terminal device,
Both a data signal and a voice signal are wirelessly transmitted and received between one terminal device and another terminal device.

If the voice / data recognition means and the process switching means are provided, the voice / data recognition means can:
Recognize whether a signal from another terminal device is a data signal or a voice signal. And according to this recognition result,
The processing switching means switches between the data processing means and the voice processing means for processing a signal from another terminal device. Therefore, regardless of whether the signal from the other terminal device is a data signal or a voice signal, the processing corresponding to each is automatically performed and sent to the terminal device via the interface means and output.

Furthermore, if the terminal device is provided with a voice input / output means and a control signal input / output means and is equipped with a card connection means, a voice signal is sent from this terminal device to another terminal device in the wireless interface card. When transmitting, the voice signal input by the voice input / output unit is received by the interface unit via the card connecting unit, the received voice signal is processed by the voice processing unit, and further input by the control signal input / output unit. It transmits to another terminal device according to a control signal. Further, when a voice signal from another terminal device is received, the voice signal is processed by the voice processing means, sent from the interface means to the voice input / output means through the card connecting means, and then the voice input / output means. Output. Therefore,
If the terminal device is configured to be portable, the terminal device and the wireless interface card function as a mobile phone by connecting the terminal device and the wireless interface card.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A wireless interface card according to the present invention will be described below with reference to the drawings. However, here
A case where the present invention is applied to a PC card will be described.

[First Embodiment] In this embodiment, a wireless interface card according to the first aspect of the present invention will be described, in particular, a wireless communication system corresponding to a digital cellular system. The wireless interface card of the present embodiment is configured as shown in FIG. 1, and its external appearance is shown in FIG. 2 in a PCMCIA (Personal Computer).
ter Card International Association) and the Japan Electronic Industry Development Association (JEIDA). The wireless interface card (hereinafter referred to as a PC card) 10 is used by inserting a connector portion 10a provided at one end thereof into a card slot provided in a terminal device (not shown) for use. Wireless communication is performed with another terminal device that is a communication partner.

The terminal device into which the PC card 10 is inserted is
For example, it is composed of a personal computer, an information portable terminal, etc., and performs input / output of a data signal for data communication and a voice signal for voice communication, and sets a control signal necessary for communication with a communication partner. It is something that will be done. The control signal includes a signal for designating a communication partner (for example, a signal for line connection) and a signal for designating whether to perform data communication or voice communication. However, the control signal is preset in the terminal device when the terminal device communicates with another terminal device. Further, other terminal devices that are communication partners include, for example, other terminal devices connected via a wireless base station and a public line, and other terminal devices on a specific wireless network.

As shown in FIG. 1, the PC card 10 has an interface means 11, a data processing means 12, a voice processing means 13, a channel codec means 14, a modulation / demodulation means 15, a transmission / reception means 16 and a control means. It is composed of 17 and 17. However, each of these means
Each is composed of a DSP (Digital Signal Processor) or the like. The interface means 11 corresponds to the connector section 10a, and includes PCMCIA and JEIDA.
It complies with the standard. The interface means 11 is adapted to exchange data signals, voice signals, and control signals with the terminal device.

The data processing means 12 performs processing necessary for sending to the channel codec means 14, such as speed conversion or parallel / serial conversion, on the data signal received by the interface means 11. In addition, the data signal from the channel codec means 14 is also subjected to processing necessary for sending to the interface means 11. The voice processing means 13 receives, for example, VSELP (Vector Sum Excited L) from the voice signal received by the interface means 11.
(inear Prediction) system and performs voice encoding and sends it to the channel codec means 14. Similarly, the voice signal from the channel codec means 14 is also subjected to voice decoding by, for example, the VSELP system and the interface. It is sent to the means 11.

The channel codec means 14 is, for example, Time Division Multiple Access (TDMA).
This is to construct and disassemble the transmission frame by the Access method. That is, the channel codec unit 14 stores the data signal from the data processing unit 12 or the voice signal from the voice processing unit 13 and the control signal from the control unit described later in the constructed transmission frame, and the modulation / demodulation unit 1
5, the transmission frame from the modulation / demodulation means 15 is disassembled, and the data signal, audio signal, and control signal stored in this transmission frame are respectively processed by the data processing means 12 and the audio processing means 13. , To the control means 17.

The modulation / demodulation means 15 transmits the transmission frame from the channel codec means 14 wirelessly, for example, π / which is a TDMA modulation method.
4-shift QPSK (Quadrature Phase Shift Keying)
Is transmitted to the transmitting / receiving means 16,
Further, for a transmission frame from another terminal device received by the transmitting / receiving means 16 described later, for example, π / 4 shift QP
It demodulates SK and sends it to the channel codec means 14. The transmission / reception means 16 wirelessly transmits the transmission frame from the modulation / demodulation means 15 to another terminal device designated by the terminal device, and receives the transmission frame from another terminal device to modulate / demodulate means 15. To be sent to. That is, the transmission / reception unit 16 wirelessly transmits / receives a transmission frame in which a data signal or a voice signal and a control signal accompanying them are stored between a terminal device and another terminal device.

The control means 17 is an interface means 11.
It controls the channel codec means 14, the modulation / demodulation means 15, and the transmission / reception means 16 in accordance with the control signal received in 1. to manage the communication between the terminal device and the other terminal device. To the channel codec means 14 for storage in the.
Further, the control means 17 includes a process switching means 17a. The processing switching unit 17a transmits the data signal or the voice signal to and from the other terminal device according to the control signal received by the interface unit 11, that is, according to the setting in the terminal device.
2 or the voice processing means 13 is used to switch the processing.

Next, an operation example of the PC card 10 configured as above will be described. Here, a case where a data signal or a voice signal is transmitted from the terminal device in which the PC card 10 is inserted to another terminal device will be described with reference to FIG.
A description will be given according to the flowchart of. In the terminal device, when a user inputs a data signal or a voice signal,
These data signals or voice signals are sent to the PC card 10 via the card slot of the terminal device. At this time, in the terminal device, the control signal necessary for transmitting the data signal or the voice signal is preset by the user, and this control signal is sent to the PC card 10.

Interface means 11 of PC card 10
Receives a control signal from the terminal device (step 10
1. In the following, the step is abbreviated as S), the process switching means 17a of the control means 17 switches between data communication and voice communication according to the control signal from the interface means 11 (S102). Processing switching means 17
When a is switched to perform data communication, that is, when a data signal is transmitted from the terminal device, the data processing means 12 receives the data signal from the interface means 11 and converts the data signal into the channel codec means 1.
4 is performed (S103). At this time, the voice processing means 13 has the processing switching means 17a.
It is in the inactive state after switching.

When the processing switching means 17a is switched to perform voice communication, that is, when a voice signal is transmitted from the terminal device, the voice processing means 13 receives the voice signal from the interface means 11 and outputs the voice signal. Processing necessary for sending the signal to the channel codec means 14 is performed (S104). At this time, the data processing means 12 is in the inactive state due to the switching by the processing switching means 17a. When the processing in the data processing means 12 or the voice processing means 13 is completed, the channel codec means 14 stores the processed signal in the constructed transmission frame (S105) and sends it to the modulation / demodulation means 15. Then, when the modulation / demodulation means 15 modulates the transmission frame from the channel codec means 14 for wireless transmission (S106), the transmission / reception means 16 changes the transmission frame in which the data signal or the voice signal is stored. , Wirelessly transmits to another terminal device (S107).

In this way, the data signal or the voice signal is transmitted from the terminal device to another terminal device. Further, the PC card 10 of this embodiment is in a standby state for receiving a data signal or a voice signal from another terminal device when the above-described transmission operation is not performed. Therefore, in the standby state, when a data signal or a voice signal is stored in a transmission frame and transmitted from another terminal device, the PC card 10
The terminal device outputs the received data signal or audio signal by performing the above steps in reverse. However,
At this time, in the terminal device, it is assumed that the user sets in advance whether data communication or voice communication is to be performed, and the data signal or voice signal is transmitted from the communication partner according to the setting.

As described above, in the PC card 10 of this embodiment, the data processing means 12 processes the data signal.
Further, the voice processing means 13 processes the voice signal, and both the data signal and the voice signal are exchanged with the terminal device by the interface means 11. Therefore, it is possible to handle both transmission and reception of data signals and voice signals without requiring connection of an interface dedicated to voice signals or replacement of the PC card 10, which is more convenient for the user than before. Become. Further, by connecting the interface means 11 to the terminal device, both the data signal and the voice signal can be dealt with, so that the connection is easy and the user can easily use it.

In the present embodiment, the case where only one of the data signal and the voice signal is transmitted and received has been described, but for example, the terminal device has a storage means such as a semiconductor memory for temporarily storing the data signal. As long as it has a function of alternately responding to both a data signal and a voice signal in a time division manner, the present embodiment is realized by temporarily storing a data signal which does not require immediacy in the storage means. The PC card 10 can alternately transmit and receive both the data signal and the voice signal in a time division manner. Therefore, it becomes possible for the terminal device to simultaneously input and output the data signal and the voice signal.

In the present embodiment, the case where the wireless communication system is compatible with the digital cellular system has been described, but the present invention is not limited to this digital cellular system and, for example, the transmission frame construction in the channel codec means 14 is constructed. Another wireless communication system (for example, PHS (Personal Handyphone System)) by using another system as the system or the modulation / demodulation system in the modulation / demodulation means 15.
Etc.) can be dealt with. Therefore, the PC card 10 of the present embodiment has an advantage that one terminal device can support several wireless communication systems by replacing the PC card 10 with one compatible with different wireless communication systems.

[Second Embodiment] Here, a wireless interface card (PC card) according to the second aspect of the present invention.
Will be described. However, the same components as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 4, the PC card 10 of this embodiment is provided with a voice / data recognition means 18 in addition to the first embodiment.

When the channel codec means 14 decomposes a transmission frame from another terminal device, the voice / data recognizing means 18 receives a control signal from the transmission frame, and based on this control signal, the transmission is carried out. It recognizes whether the data signal or the audio signal is stored in the frame. That is, it recognizes whether the signal transmitted from another terminal device is a data signal or a voice signal. This voice / data recognition means 18
The recognition result by the process switching means 1 of the control means 17
7a.

In the PC card 10 thus constructed, when a data signal or a voice signal is stored in a transmission frame and transmitted from another terminal device, the transmission / reception means 16 receives the transmission frame and the modulation / demodulation means 15 receives it. After demodulation, the channel codec means 14 decomposes the transmission frame. At this time, the channel codec means 14
Then, the control signal is taken out from the disassembled transmission frame, and this control signal is sent to the voice / data recognition means 18. Based on this control signal, the voice / data recognition means 18
Then, it recognizes whether the signal from the communication partner is a data signal or a voice signal. Then, the processing switching means 17
In a, according to the recognition result by the voice / data recognizing unit 18, the data signal or the voice signal stored in the transmission frame is switched between the data processing unit 12 and the voice processing unit 13.

Therefore, when a data signal is transmitted from another terminal device, the data signal is transmitted by the data processing means 1.
In step 2, when an audio signal is transmitted, the audio signal is processed by the audio processing means 13. Then, in the interface means 11, the data processing means 12
The data signal processed in step 1 or the audio signal processed by the audio processing means 13 is received and sent to this terminal device for output by the terminal device.

As described above, in the PC card 10 of this embodiment, the voice / data recognition means 18 recognizes which of the data signal and the voice signal is transmitted from the other terminal device, and the processing switching means based on the recognition result. 17a switches between data communication and voice communication. Therefore, in the standby state, for example, even when a voice signal is transmitted from another terminal device when data communication is set in the terminal device, the process switching means 17
Since "a" automatically switches to voice communication and the transmitted voice signal is processed by the voice processing means 13, the terminal device outputs normally. In other words, data communication and voice communication are automatically switched according to the received signal,
It is not necessary to set either data communication or voice communication in advance in the standby state, and as a result, it is convenient for the user, and a reliable reception operation is possible.

[Third Embodiment] Here, a wireless interface card (PC card) according to a third aspect of the present invention.
Will be described. The PC card 10 of this embodiment is shown in FIG.
As shown in FIG. 2, a mobile phone adapter 20 is configured as a terminal device, and is used by inserting it into a card slot (not shown) of this mobile phone adapter 20. However, the PC card 10 is configured in the same manner as the second embodiment described above, and detailed description thereof will be omitted. The mobile phone adapter 20 into which the PC card 10 is inserted is formed so as to be portable for carrying by hand.
As shown in FIG. 6, the card connection unit 21, the voice input / output unit 22, the control signal input / output unit 23, and the control unit 24.
And a battery section 25.

The card connecting means 21 corresponds to the card slot of the terminal device, and has PCMCIA and JEID.
It complies with the standard by A. That is, the card connecting means 21 is for connecting to the interface means 11 and for exchanging voice signals and control signals with the interface means 11. The voice input / output unit 22 performs input / output of voice signals transmitted / received by the card connection unit 21, and includes a microphone 22a, a microphone amplifier 22b, a speaker 22c, and a speaker amplifier 2.
2d and an audio codec section 22e.

The microphone 22a is for inputting an audio signal to be transmitted to another terminal device in the state of an analog signal.
The audio signal input by the microphone 22a is amplified by the microphone amplifier 22b and sent to the audio codec unit 22e. The speaker 22c outputs a voice signal from another terminal device in an analog signal state. The audio signal output from the speaker 22c is output from the audio codec unit 22e to the speaker amplifier 22.
The speaker amplifier 22d amplifies and outputs the amplified signal.

The voice codec section 22e includes a microphone 22a.
Alternatively, an analog signal for inputting / outputting through the speaker 22c and a signal for exchanging with the PC card 10 via the card connecting means 21 (for example, 64 k PCM (Pulse Code)
Modulation)) is to be converted. In the voice codec unit 22e, the voice coding system in the voice processing means 13 is different depending on the wireless communication system supported by the PC card 10 (for example, a digital cellular system or a personal handyphone system). However, in order to be compatible, the PC card 10 converts the analog signal into, for example, a 64k PCM.
It is designed to give versatility to the signals sent and received.

The control signal input / output unit 23 inputs / outputs a control signal necessary for communicating with another terminal device, and has a key input section 23a, a sounder 23b, and
Vibrator 23c and LCD (Liquid Crystal Displ
ay) The display section 23d is provided. However, the control signal input / output unit 23 may not include the sounder 23b, the vibrator 23c, and the LCD display unit 23d. The key input unit 23a performs communication such as a signal for the user to specify a communication partner such as a dial line number of another terminal device or a signal to specify that voice communication is to be performed with another terminal device. The control signal necessary for the operation is input.

Sounder 23b and vibrator 23c
Are for notifying the user of the arrival of a voice signal from another terminal device. The LCD display unit 23d displays information regarding the line connection state and the like in order to inform the user thereof. The control unit 24 controls the voice input / output unit 22 and the control signal input / output unit 23. The battery unit 25 is composed of a primary battery or a secondary battery, and is used for the PC card 10 and the mobile phone adapter 2.
0 supplies power for operating the PC card 10 and the mobile phone adapter 20, respectively.

Next, an example of operation when the interface means 11 of the PC card 10 is inserted into the card connecting means 21 of the mobile phone adapter 20 configured as described above will be described. In the mobile phone adapter 20, when a control signal necessary for communicating with another terminal device is input by the key input unit 23a and a voice signal to be transmitted to another terminal device is input by the microphone 22a, the PC card 10 The interface means 11 receives the voice signal and the control signal via the card connection means 21. However, this audio signal is the one after being converted by the audio codec unit 22e. Then, in the PC card 10, the voice signal received by the interface means 11 is processed by the voice processing means 13 in accordance with the control signal from the mobile phone adapter 20, and is passed through the channel codec means 14, the modulation / demodulation means 15, and the transmitting / receiving means 16. The data is wirelessly transmitted to another terminal device.

If a voice signal is transmitted from another terminal device to the mobile phone adapter 20, the PC card 10
The transmitting / receiving means 16 receives the voice signal, and the modulating / demodulating means 1
5, the voice processing means 13 performs processing through the channel codec means 14. Then, the processed audio signal is sent from the interface means 11 to the mobile phone adapter 20. At this time, in the mobile phone adapter 20, according to the instruction from the control means 17 of the PC card 10, the sounder 2
Key input unit 2 for displaying an incoming call by 3b or vibrator 23c and establishing a line with another terminal device
Input of a control signal by 3a is performed. And
In the mobile phone adapter 20, the card connection unit 21 receives the audio signal from the interface unit 11, the audio signal is converted by the audio codec unit 22e, and then output by the speaker 22c.

As described above, the PC card 10 of this embodiment
Is inserted into the mobile phone adapter 20 to wirelessly perform voice communication with other terminal devices. At this time, the mobile phone adapter 20 is formed so as to be portable, and includes a battery unit 25 that supplies power to the PC card 10 and the mobile phone adapter 20. Therefore, by inserting the PC card 10 into the mobile phone adapter 20, the PC card 10 and the mobile phone adapter 20 function as a mobile phone.

As described above, the PC card 10 of this embodiment
Inserts it into the mobile phone adapter 20 to perform voice communication with other terminal devices, and the mobile phone adapter 2
Data communication with other terminal devices is performed by replacing 0 with a terminal device compatible with input / output of data signals such as an information portable terminal. Therefore, by exchanging one PC card 10, it is possible to support both data communication and voice communication, so that it is not necessary to use a plurality of equipments such as a mobile phone and a modem adapter as in the conventional case, and the mobile phone can be used. It is convenient and easy to connect. As a result, it is convenient and easy for the user to use.

Further, the PC card 10 of this embodiment can support several wireless communication systems depending on the transmission frame construction system of the channel codec unit 14 and the modulation / demodulation system of the modulation / demodulation unit 15. Therefore, the PC card 10 inserted in the mobile phone adapter 20
Is replaced with a PC card 10 compatible with another wireless communication system, thereby functioning as a mobile phone compatible with another wireless communication system. That is, by having the PC card 10 compatible with a plurality of wireless communication systems, the user can select the most suitable wireless communication system depending on the time and the case.

In the above-mentioned first to third embodiments, the case where the present invention is applied to the PC card has been described, but the present invention is not limited to this PC card, and it is connected to a terminal device and Other devices can be implemented as long as they can exchange signals with the terminal device, and the same effects as the above-described embodiments can be obtained.

[0044]

As described above, in the wireless interface card of the present invention, the data processing means processes the data signal and the voice processing means processes the voice signal. Both of these are designed to be exchanged with the terminal device by the interface means. Therefore, since it is possible to handle both data signals and voice signals without the need for an interface dedicated to voice signals or replacement of a wireless interface card, it is more convenient and easier for users to use than before. Play.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of a wireless interface card according to the present invention.

FIG. 2 is an external view of the wireless interface card of FIG.

3 is a flowchart showing an operation example of a transmission operation in the wireless interface card of FIG.

FIG. 4 is a block diagram showing a schematic configuration of a second embodiment of a wireless interface card according to the present invention.

5A and 5B are external views of a wireless interface card connected to a terminal device (mobile phone adapter) in a third embodiment of the wireless interface card according to the present invention, (a) is a plan view and (b) is a front view. , (C) are side views.

6 is a block diagram showing a schematic configuration of a mobile phone adapter connected to the wireless interface card of FIG.

[Explanation of symbols]

10 wireless interface card (PC card) 11 interface means 12 data processing means 13 voice processing means 17a processing switching means 18 voice / data recognition means 20 terminal device (mobile phone adapter) 21 card connection means 22 voice input / output means 23 control signal input Output means

Claims (3)

[Claims] 1. A terminal device for inputting / outputting either or both of a data signal and a voice signal,
A wireless interface card for wirelessly transmitting and receiving the data signal or the voice signal to and from another terminal device, capable of exchanging the data signal and the voice signal with the one terminal device. Interface means, processing for transmitting the data signal received by the interface means to the other terminal device, and processing for transmitting the data signal received from the other terminal device to the interface means And a data processing unit that performs processing for transmitting the voice signal received by the interface unit to the other terminal device, and sends the voice signal received from the other terminal device to the interface unit. A wireless interface card comprising: a voice processing unit that performs processing for 2. A voice / data recognition means for recognizing whether the signal received from the other terminal device is the data signal or the voice signal, and based on a recognition result by the voice / data recognition means. The wireless interface card according to claim 1, further comprising: a processing switching unit that switches between which of the data processing unit and the voice processing unit processes a signal received from the other terminal device. . 3. An audio input / output unit for inputting / outputting the audio signal, and a control signal input / output unit for inputting / outputting a control signal necessary for transmitting / receiving with the other terminal device, A card connection unit for exchanging voice signals input / output by the voice input / output unit and control signals input / output by the control signal input / output unit with the interface unit, and configured to be portable. 3. The wireless interface card according to claim 1, wherein the wireless interface card is connected to an established terminal device.