JPH11136305A - Information terminal device and information terminal group - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform operation as though a storage device were directly connected to a portable information terminal device by connecting a hard disk unit to a master unit for PDA and registering the portable information terminal device on the PDA master unit. SOLUTION: A physical layer controlling part 4 fetches a data part of a modulation signal that has been received from a PHS-PDA 15 at a radio part 2, and next a modulating and demodulating part 5 demodulates a base band signal (data signal) from the modulation signal. The data are once stored in a buffer 8 for data in order to absorb the difference between a transmission speed with the PHS-PDA 15 and a transfer speed to a hard disk unit 14, and a data format converting part 7 converts it into a recordable format in the unit 14. A command issuing part 9 generates a control command which writes data from the PHS-PDA 15 in the unit 14, the control command is sent to the unit 14 through an interface line 13, and setting to a write operation mode is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information terminal device and an information terminal device group for connecting a portable information terminal device and a large-capacity storage device.

[0002]

2. Description of the Related Art In recent years, portable information terminal devices called personal digital assistants (hereinafter referred to as "PDAs") have become widespread. Since this type of portable information terminal device is driven by a battery, the battery may be discharged or data may be lost due to poor contact between the battery and the PDA main body. Therefore, a reliable data backup means is required. Is done. As a data storage device, there is a method in which a large-capacity flash memory or an EEPROM (electrically erasable and erasable memory element) is mounted on a PDA as a storage device, which can hold a memory content without a power supply. The storage device generally has characteristics such as much smaller capacity and longer access time than a hard disk device, which is one type of large-capacity storage device, and is easy to use for a user. It was not something. Therefore, conventionally, the data on the PDA has been frequently connected to a computer or the like having a large-capacity hard disk device serving as a master unit by means of wired serial communication or the like to frequently store the data.

[0003] Hereinafter, a PDA which handles a large amount of data will be used as an information terminal device for backing up the data.
The configuration of a conventional example of the parent device will be described with reference to FIG. FIG. 4 is a block diagram showing a PDA parent device as a conventional information terminal device.

In FIG. 4, reference numeral 1A denotes a PDA master as an information terminal device, 6 denotes a CPU for controlling data conversion and the like in the PDA master 1A, and 7 denotes data transmitted from a PDA 15A to be described later. A data format conversion unit for converting data sent from the hard disk device 14 into a data format that can be handled by the PDA 15A and a data buffer for temporarily storing data; A command issuing unit for issuing a control command for an interface with the hard disk drive 14;
A physical interface controller for controlling an electrical interface with the PC, 11 an internal bus for control, 13 an interface line connecting the PDA master unit 1A and the hard disk device 14, 14 a hard disk device, and 15A a portable information device. A PDA as a terminal device, 24 is a serial communication physical interface for controlling an electrical interface of serial communication, and 25 is a PDA for waveforms of signals handled in communication.
A waveform shaping unit for shaping the data so that it can be read by the master unit 1A without error, 26 is a sampling unit for converting serial communication data into digital data, and 27 is a PDA 1
5A and a serial communication line connecting the PDA master device 1A.

The physical interface control unit 10 is a SCSI (American National Standard, ANSI X3.131-1986 “Sm
all Computer System Interface ”),
The physical interface control unit 10 is described as SCSI10. Also, the interface cable 13 is connected to the SCSI cable 1
Described as 3.

Next, the conventional PD constructed as described above
An operation of connecting the PDA base unit 1A to which the hard disk device 14 is connected and the PDA 15A with respect to the A base unit 1A via the serial communication line 27 and accumulating the data signal on the PDA 15A will be described.

[0007] Serial communication between the PDA master unit 1A and PDA 15A and the PDA master unit 1A / hard disk device 14
Since the transmission speed and the signal format are different from those of communication between them, signal format conversion and buffering are indispensable. This format conversion processing is mainly performed in the PDA master device 1A.

The serial signal sent from the PDA 15A is transmitted to the serial communication physical interface 2 of the PDA master unit 1A.
You can get it at 4 first. Next, the waveform of the serial signal is shaped by the waveform shaping unit 25, and the serial signal whose waveform has been shaped is converted into a digital signal by the sampling unit 26. Next, the digital signal is converted by the data format converter 7.
Thus, the digital signal is converted into a digital signal in a data format that can be handled by the hard disk device 14. The digital signal after the data format conversion is stored as digital data in the data buffer 8 at any time so that the signal processing can be performed at a high speed. A SCSI control command for writing a data signal from the PDA 15A to the hard disk device 14 is generated by the command issuing unit 9, sent to the hard disk device 14 via the SCSI cable 13, and set to the write operation mode. After setting to the write operation mode,
The digital data stored in the data buffer 8 is written to the hard disk device 14 via the SCSI 10 and the SCSI cable 13. The entire flow of the data signal up to this point is managed by the CPU 6, and the data signal is transferred via the internal bus 11.

[0009]

However, in the above-mentioned conventional PDA master device (information terminal device) 1A, a PDA 15A, which should be small, lightweight and highly portable, is used.
Every time the backup is performed, the user must go to the place where the PDA master unit 1A is located and connect by wire.
When the memory in the A15A becomes full or the remaining capacity of the battery becomes low, it is impossible to leave the PDA master unit 1A, and there is a problem that the portability cannot be utilized. .

In this information terminal device, it is required that an operation can be performed as if a storage device were directly connected to the portable information terminal device. It is required that an operation can be performed as if the peripherals were directly connected.

According to the present invention, an information terminal device capable of performing an operation as if a storage device is directly connected to the portable information terminal device, and an information terminal device having various peripherals directly connected to the portable information terminal device An object of the present invention is to provide a group of information terminal devices that can be operated.

[0012]

According to another aspect of the present invention, there is provided an information terminal device connected to a storage device, comprising: a wireless unit that wirelessly communicates with the portable information terminal device; A radio control unit that controls the operation of the radio unit, a modulation / demodulation unit that demodulates a modulated signal obtained from the radio unit to obtain a data signal, modulates the data signal to generate a modulated signal, and temporarily stores the data signal. Data buffer for temporarily storing, and a data format for converting a control signal issued by the portable information terminal device into a control signal of the storage device and converting a control signal issued by the storage device into a control signal of the portable information terminal device A conversion unit, a command issuing unit that receives a control signal from the data format conversion unit and issues a control signal to the storage device, and a physical interface system that controls a connection interface with the storage device. And a structure having a section.

[0013] Thus, an information terminal device which can be operated as if the storage device is directly connected to the portable information terminal device can be obtained.

An information terminal device group according to the present invention for solving the above-mentioned problems is an information terminal device group including a plurality of information terminal devices connected to a plurality of peripheral devices, and each information terminal device is a portable type. A wireless unit that wirelessly communicates with the information terminal device, a wireless control unit that controls the operation of the wireless unit,
A modulation / demodulation unit for demodulating a modulation signal obtained from a radio unit to obtain a data signal and modulating the data signal to generate a modulation signal; a data buffer for temporarily storing the data signal; and a portable information terminal A data format conversion unit that converts a control signal issued by the device into a control signal of the peripheral device and converts a control signal issued by the peripheral device into a control signal of the portable information terminal device, and a control signal from the data format conversion unit. The configuration includes a command issuing unit that receives the control signal and issues a control signal to the peripheral device, and a physical interface control unit that controls a connection interface with the peripheral device.

As a result, a group of information terminals that can operate as if various peripherals are directly connected to the portable information terminal is obtained.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention relates to an information terminal device connected to a storage device, a radio unit for communicating with a portable information terminal device by radio, and an operation of the radio unit. A modulation and demodulation unit that demodulates a modulation signal obtained from the radio unit to obtain a data signal and modulates the data signal to generate a modulation signal, and data that temporarily stores the data signal. A buffer for converting a control signal issued by the portable information terminal device to a control signal of the storage device and a data format conversion unit for converting the control signal issued by the storage device to a control signal of the portable information terminal device;
A command issuing unit for receiving a control signal from the data format conversion unit and issuing a control signal to the storage device, and a physical interface control unit for controlling a connection interface with the storage device; The communication between the terminal device and the storage device has an effect that the communication is performed as if the portable information terminal device and the storage device were directly connected.

According to a second aspect of the present invention, in the first aspect, the wireless unit communicates with the portable information terminal device by infrared rays. This has the effect that communication with the device is established.

According to a third aspect of the present invention, in the first aspect of the invention, the wireless unit communicates with the portable information terminal device by ultrasonic waves. This has the effect that communication with the terminal device is established.

According to a fourth aspect of the present invention, there is provided an information terminal device group comprising a plurality of information terminal devices connected to a plurality of peripheral devices, wherein each information terminal device communicates with a portable information terminal device by radio. A wireless unit, a wireless control unit that controls the operation of the wireless unit, and a modem unit that demodulates the modulated signal obtained from the wireless unit to obtain a data signal and modulates the data signal to generate a modulated signal. A data buffer for temporarily storing data signals, and a control signal issued by the portable information terminal device is converted into a control signal of the peripheral device, and a control signal issued by the peripheral device is converted into a control signal of the portable information terminal device. A data format conversion unit to be converted, a command issuing unit that receives a control signal from the data format conversion unit and issues a control signal to the peripheral device,
And a physical interface control unit for controlling a connection interface with the peripheral device. The communication between the portable information terminal device and the plurality of peripheral devices is performed as if the portable information terminal device and the plurality of peripheral devices were connected. It has the effect that it is performed as if it were directly connected to the device.

According to a fifth aspect of the present invention, in the fourth aspect, the wireless unit communicates with the portable information terminal device by infrared rays. This has the effect that communication with the device is established.

According to a sixth aspect of the present invention, in the fourth aspect of the invention, the wireless unit communicates with the portable information terminal device by ultrasonic waves. This has the effect that communication with the terminal device is established.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a block diagram showing a PDA parent device as an information terminal device according to Embodiment 1 of the present invention. In FIG. 1, a CPU 6, a data format converter 7,
The data buffer 8, command issuing unit 9, physical interface control unit (SCSI) 10, internal bus 11, interface line (SCSI cable) 13, and hard disk drive 14 are the same as those in FIG.
Description is omitted.

Reference numeral 1 denotes a PDA master device as an information terminal device;
2 is a format defined by RCR-std.28 (hereinafter referred to as “R
CR-std.28 format ")
A radio unit for communication, 3 is a radio control unit for controlling the operation of the radio unit 2, 4 is a physical layer control unit for controlling the physical layer (layer 1) of the PHS communication protocol, and 5 is a radio unit 2
A modulation / demodulation method for demodulating an RCR-std.28 format modulated signal obtained from the above to obtain a baseband signal as a data signal and for modulating the data signal with an RCR-std.28 format modulation method to generate a modulated signal Reference numeral 12 denotes an antenna used for PHS communication, and 15 denotes a PHS-PDA as a portable information terminal device registered in the PDA master device 1. Here, the PHS-PDA is a PDA registered in the PDA master as a slave having a communication function using the PHS.

The function, operation, and the like of the PDA master device 1 as the information terminal device thus configured will be described with reference to FIG. FIG. 2 is a signal flow chart showing the flow of data signals and control signals between PHS-PDA 15 and PDA master device 1 and between PDA master device 1 and hard disk device 14 according to Embodiment 1 of the present invention. It is.

The data communication using PHS between the PDA master unit 1 and the PHS-PDA 15 and the data communication between the PDA master unit 1 and the hard disk device 14 have different transmission speeds and signal formats. In addition, signal format conversion and buffering are indispensable, and the format conversion and buffering processes are performed in the PDA master device 1. Also, P
The signal transmitted from the HS-PDA 15 to the PDA master device 1 includes a control signal in addition to a pure data signal. This is logically because the hard disk drive 14 is a PHS-PDA
15 is necessary to enable recognition as if the PHS-PDA 15 is on the PHS-PDA 15.
Is also converted into a signal for controlling the hard disk device 14.

The modulated signal transmitted from the PHS-PDA 15 in the modulation format according to the RCR-std.
It is first received by the HS communication radio unit 2. The wireless control unit 3 that controls the operation of the PHS wireless controls the operation of the wireless unit 2. The modulated signal received by the radio unit 2 is transmitted to the physical layer control unit 4
Then, the data portion is extracted, and then the modulated signal is demodulated from the modulated signal to a baseband signal (data signal) in the modem unit 5. The data that has become the baseband signal is directly sent to the CPU.
6. Can be handled by the hard disk device 14.
This data is temporarily stored in the data buffer 8 in order to absorb the difference between the transmission speed with the PHS-PDA 15 and the transfer speed to the hard disk device 14, and is sequentially converted into a format that can be recorded in the hard disk device 14. 7 is converted. PHS-
A control command (control signal) for writing data from the PDA 15 is generated by the command issuing unit 9 and is transmitted via the interface line 13 to the hard disk drive 14.
To set the write operation mode.

In FIG. 2, the data flow up to the selection of the hard disk device and the write instruction by the control command (control signal) issued by the PHS-PDA 15 corresponds to the operation up to the write operation mode setting. This is an operation corresponding to the states of the bus free phase and the arbitration phase among the states of the hard disk device 14 shown on the rightmost side of FIG. After the setting of the write operation mode is completed, the data stored in the data buffer 8 is sequentially written to the hard disk device 14. In FIG. 2, the flow of signals after the start of data transfer from PHS-PDA 15 corresponds to this. Thereafter, if the data is correctly written to the hard disk device 14, the PD
A command of normal termination is issued to the master unit 1 for A, and P
An acknowledgment (ACK) is sent to the HS-PDA 15, indicating that the PHS-PDA 15 has correctly backed up the data to the hard disk device 14. After that, the connection from the hard disk device 14 to the PDA master device 1
A notification (complete) of communication link release is made by CSI, and it is confirmed that a series of operations is also completed in PHS-PDA15. The entire signal flow up to this point is managed by the CPU 6, and the signal is
1 is transferred.

In the present embodiment, the interface between the PDA master device 1 and the hard disk device 14 is
Although an example in which the SI 10 is used has been described, various types of serial and parallel communication systems can be used as the interface. Although PHS was used for communication between the PHS-PDA 15 and the PDA master 1, the ETSI (European Telecommunications Standards Institute, European Telecommunications
Standard Institute) wireless standard DECT (European Digital Cordless Telecommunications Standard, DigitalEur-opean)
Cordless Telephone) and various PCS (Personal Comm)
unication System) can also be used. further,
The PDA and the master device for the PDA can be connected by infrared rays or ultrasonic waves.

As described above, according to the present embodiment, the PD
A hard disk device 14 is connected to the master device 1 for A
By registering PHS-PDA15 in parent device 1,
Since the PHS-PDA 15 can perform communication with the PDA base unit 1 using the PHS home communication channel,
A control command (control signal) and a data signal transmitted from the PHS-PDA 15 to the PDA base unit 1 by PHS radio waves can be converted by the PDA base unit 1 into commands and data specified in the SCSI 10 as if the PHS- An operation or an operation as if the hard disk device 14 was directly connected to the PDA 15 can be performed.

(Embodiment 2) FIG. 3 is a block diagram showing an information terminal apparatus group (a PDA master unit group) according to Embodiment 2 of the present invention. In FIG. 3, the PDA master 1, the antenna 12, the interface line 13, the hard disk device 14, and the PHS-PDA 15 are the same as those in FIG.

Reference numerals 1B, 18 and 21 denote a PDA base unit having the same configuration as that of the PDA base unit 1, 16 a floppy disk unit as a peripheral device, and 17 a connection between the PDA base unit 1B and the floppy disk unit 16. Interface line 19, a printer as a peripheral device, 20
Is an interface line connecting the PDA master unit 18 and the printer 19, 22 is a scanner as a peripheral device, and 23 is an interface line connecting the PDA master unit 21 and the scanner 22.

In the information terminal device group shown in FIG. 3, the PHS-PDA 15, which is a PHS slave,
B, 18, and 21.

The connection, function, operation, and the like of the information terminal device group configured as described above will be described.

In the present embodiment, the PDA master units 1, 1
B, 18 and 21, various peripheral devices 14, 16,
19, 22 are connected, and the PDA master unit 1 and the floppy disk device 1 to which the hard disk device 14 is connected.
6, a PDA master unit 1B to which a printer 19 is connected, and a PDA master unit 18 to which a scanner 22 is connected.
There is a DA master unit 21. Further, the PHS-PDA 15 is registered as a PHS slave in each of the PDA masters 1, 1B, 18, 21.

The operation when the PHS-PDA 15 accesses the various peripheral devices 14, 16, 19 and 22 will be described. In the case of a write operation to the hard disk drive 14, the PDA master unit 1 and the PHS-PD
A15 is connected to P15 by PHS radio waves and executed. A series of operations in this case are the same as those in the first embodiment, and a description thereof will be omitted. When data is backed up to the floppy disk device 16 and the interface between the floppy disk device 16 and the PDA master unit 1B is SCSI, a series of operations are the same as those in the first embodiment. Therefore, the description is omitted.

The operation of causing the printer 19 to print the contents will be described. Various types of interfaces have been proposed for the interface between the printer 19 and the PDA parent device 18. In any case, the control command from the PHS-PDA 15 and the data format of the data are described in the first embodiment. As in the case described above, the conversion by the PDA parent device 18 makes it possible to easily realize an operation as if the PHS-PDA 15 and the printer 19 were directly connected.

The operation of reading image data from the scanner 22 is the same as that of the printer 19, and the control command from the PHS-PDA 15 to the scanner 22 and the data format of the data are converted by the PDA master unit 21 so that the scanner Various operations such as an operation of reading image data from the PHS-PDA1
5 and the scanner 22 can be easily realized as if they were directly connected.

In the above description, the various peripheral devices 1
PDA master unit 1, 1, to which 4, 16, 19, 22 are connected
The case where the B, 18, 21 and the PHS-PDA 15 are separately connected has been described, but a more preferable configuration is as follows.

PD to which the hard disk drive 14 is connected
A main unit 1 for A, a PDA main unit 1B to which the floppy disk device 16 is connected, a PDA main unit 18 to which a printer 19 is connected, and a PDA main unit 21 to which a scanner 22 is connected
The PHS-PDA 15 is a PDA master device 1 for each PDA,
1B, 18 and 21 are simultaneously registered as PHS slaves. Here, a PHS private line or a PHS transceiver line is used for the connection between the PHS-PDA 15 and each of the PDA master units 1, 1B, 18, 21. In this case, P
From the HS-PDA 15 to the master units 1, 1B, 18,
21 can be connected at any time, and the PHS-PDA
15 and each PDA master unit 1, 1B, 18, 21 are PHS
A wireless LAN using a private line can be formed. P
If the HS transceiver line is used, there is no charge when the LAN is used.

As described above, according to the present embodiment, PH
The PHS-PDA 15, which is an S slave, is connected to each PDA master 1,
1B, 18 and 21 at the same time, various operations such as a data backup operation to the hard disk device 14 and the floppy disk device 16, a content printing operation in the printer 19, and an image data reading operation from the scanner 22 can be performed. It can be easily realized as if the PHS-PDA 15 and the various peripheral devices 14, 16, 19, 22 were directly connected.

[0041]

As described above, according to the information terminal device according to the first aspect of the present invention, the information terminal device connected to the storage device, and the wireless unit that wirelessly communicates with the portable information terminal device. A wireless control unit that controls the operation of the wireless unit;
A modulation / demodulation unit for demodulating a modulation signal obtained from a radio unit to obtain a data signal and modulating the data signal to generate a modulation signal; a data buffer for temporarily storing the data signal; and a portable information terminal A data format conversion unit that converts a control signal issued by the device into a control signal of the storage device and converts a control signal issued by the storage device into a control signal of the portable information terminal device; and a control signal from the data format conversion unit. By having a command issuing unit for receiving and issuing a control signal to the storage device, and a physical interface control unit for controlling a connection interface with the storage device, communication between the portable information terminal device and the storage device is performed as if The operation can be performed as if the portable information terminal device and the storage device were directly connected, so that the operation as if the storage device was directly connected to the portable information terminal device was performed. And operating an advantageous effect that it is possible to obtain.

According to the invention described in claim 2, according to claim 1
In the invention described in (1), the wireless unit communicates with the portable information terminal device by infrared rays, thereby obtaining an advantageous effect that communication between the information terminal device and the portable information terminal device is established.

According to the invention described in claim 3, according to claim 1
In the invention described in (1), the wireless unit communicates with the portable information terminal device by ultrasonic waves, thereby obtaining an advantageous effect that communication between the information terminal device and the portable information terminal device is established.

According to a fourth aspect of the present invention, there is provided an information terminal device group including a plurality of information terminal devices connected to a plurality of peripheral devices. A wireless unit that wirelessly communicates with the type information terminal device, a wireless control unit that controls the operation of the wireless unit, demodulates a modulated signal obtained from the wireless unit to obtain a data signal, and modulates and modulates the data signal. A modulation / demodulation unit for generating a signal, a data buffer for temporarily storing a data signal, a control signal issued by the portable information terminal device converted into a control signal for the peripheral device, and a control signal issued by the peripheral device. A data format conversion unit for converting the control signal into a control signal of the type information terminal device, and a command issuing a control signal to the peripheral device in response to the control signal from the data format conversion unit Unit and a physical interface control unit for controlling a connection interface with the peripheral device, thereby enabling communication between the portable information terminal device and the plurality of peripheral devices as if the portable information terminal device and the plurality of peripheral devices were connected. Can be performed as if they were directly connected, so that an advantageous effect that operations and operations as if a plurality of peripheral devices were directly connected to the portable information terminal device can be obtained is obtained.

According to the invention described in claim 5, according to claim 4,
In the invention described in (1), the wireless unit communicates with the portable information terminal device by infrared rays, thereby obtaining an advantageous effect that communication between the information terminal device and the portable information terminal device is established.

According to the invention set forth in claim 6, according to claim 4,
In the invention described in (1), the wireless unit communicates with the portable information terminal device by ultrasonic waves, thereby obtaining an advantageous effect that communication between the information terminal device and the portable information terminal device is established.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a PDA base unit as an information terminal device according to a first embodiment of the present invention;

FIG. 2 is a PHS-PDA according to Embodiment 1 of the present invention.
Flow chart showing the flow of data signals and control signals between the PDA master device and the PDA master device and between the PDA master device and the hard disk device.

FIG. 3 is a block diagram showing an information terminal device group (PDA parent device group) according to a second embodiment of the present invention;

FIG. 4 is a block diagram showing a PDA base unit as a conventional information terminal device;

[Explanation of symbols]

 1, 1B, 18, 21 PDA master unit (information terminal device) 2 Radio unit 3 Radio control unit 4 Physical layer control unit 5 Modulation / demodulation unit 6 CPU 7 Data format conversion unit 8 Data buffer 9 Command issuing unit 10 Physical interface control Unit (SCSI) 11 Internal bus 12 Antenna 13, 17 Interface line (SCSI cable) 14 Hard disk device (storage device) 15 PHS-PDA (Portable information terminal device) 16 Floppy disk device 19 Printer 20, 23 Interface line 22 Scanner

Claims (6)

[Claims] An information terminal device connected to a storage device, comprising: a wireless unit that wirelessly communicates with a portable information terminal device; a wireless control unit that controls an operation of the wireless unit; A modulation / demodulation unit that demodulates the modulated signal to obtain a data signal and modulates the data signal to generate a modulation signal; a data buffer that temporarily stores the data signal; A data format conversion unit for converting a control signal to be converted into a control signal for the storage device and a control signal issued by the storage device to a control signal for the portable information terminal device; and a control signal from the data format conversion unit. Receiving a control signal to the storage device in response to the command, and a physical interface control unit for controlling a connection interface with the storage device. The information terminal device. 2. The information terminal device according to claim 1, wherein the wireless unit communicates with the portable information terminal device by infrared rays. 3. The information terminal device according to claim 1, wherein the wireless unit communicates with the portable information terminal device by ultrasonic waves. 4. An information terminal device group comprising a plurality of information terminal devices connected to a plurality of peripheral devices, wherein each information terminal device wirelessly communicates with a portable information terminal device. Unit, a radio control unit that controls the operation of the radio unit, and a modulation and demodulation unit that demodulates the modulation signal obtained from the radio unit to obtain a data signal and modulates the data signal to generate a modulation signal, A data buffer for temporarily storing a data signal, a control signal issued by the portable information terminal device being converted into a control signal of the peripheral device, and a control signal issued by the peripheral device being transmitted to the portable information terminal device A data format conversion unit for converting the control signal into a control signal, and receiving a control signal from the data format conversion unit and issuing a control signal to the peripheral device. Parts and the information terminal apparatus group and having a physical interface controller for connecting interface control with the peripheral device. 5. The information terminal device group according to claim 4, wherein the wireless unit communicates with the portable information terminal device by infrared rays. 6. The information terminal device group according to claim 4, wherein the wireless unit communicates with the portable information terminal device by ultrasonic waves.