JPH11186967A - Infrared-ray communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an infrared-ray communication system in which operating convenience is enhanced, without sacrificing the light weight and compactness of a portable radio communication equipment when the entire system is incorporated to the portable radio communication equipment without depending on the large-sized system. SOLUTION: A portable telephone set 1 as a portable radio communication equipment is provided with an infrared-ray communication section 17 for data transfer between an external notebook personal computer 29 and the portable telephone set 1 through of infrared-ray communications. The infrared-ray communication section 17 is provided with a reception changeover section 21, a pulse width measurement section 24 and a discrimination section 25. When receiving the infrared-ray communication data, the section 21, 24, 25 measure each pulse width of the infrared-ray communication data. When the infrared-ray communication data are of low speed control, the control data are given to a low speed serial control means section 20. When the infrared-ray communication data are high speed user data, the user data are given to a high speed serial communication section 19. A single infrared-ray modem section 18 is capable of coping with infrared-ray communication data of different communication speeds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infrared communication apparatus for transmitting and receiving infrared communication data in an IR frame format conforming to the IrDA standard.

[0002]

2. Description of the Related Art In recent years, portable telephones have become widespread as one of portable wireless communication devices due to advances in telecommunication technology. It is possible to perform data communication by connecting to a personal computer (hereinafter abbreviated as a notebook computer) and operating the notebook computer.

In such a case, two data lines, a control data line and a user data line, are generally established between the notebook personal computer and the portable telephone by the above-mentioned dedicated connection cable. The control data is transferred via the control data line at, for example, 0.6 kbit / s, and the user data is transferred via the user data line at, for example, 9.6 kbit / s.

By the way, when data communication is performed using a notebook personal computer as described above, in a configuration in which the notebook personal computer and the mobile telephone are connected by a dedicated connection cable, the mobile telephone is usually used alone. Considering this, it is necessary to arrange the notebook personal computer and the mobile phone at a relatively close position and connect them with a dedicated connection cable each time, which is very troublesome.

[0005] In order to solve such a problem, data transfer between a notebook personal computer and a portable telephone can be put into practice by radio communication, specifically, safe for the human body and at low cost. For this reason, the use of infrared communication has been considered. According to this, when performing data communication using a notebook computer, if the notebook computer and the mobile phone are in a range where infrared communication is possible,
There is no need to connect them with a dedicated connection cable, and the usability can be improved.

Here, an infrared communication device for realizing the infrared communication as described above will be considered. In general, an infrared communication device is configured such that an infrared modulation / demodulation circuit and a serial communication circuit are in a one-to-one correspondence, and an IrDA (Infr.
When infrared communication data in the IR frame format conforming to the a-red Data Association) standard is received, the infrared modulation / demodulation circuit demodulates the infrared communication data and performs IrDA processing.
Serial communication data in a UART frame format conforming to the standard is generated, and the serial communication circuit generates and outputs serial data by removing a start bit and a stop bit from the serial communication data.

In the transmission processing of the infrared communication apparatus, when serial data is given, the serial communication circuit adds the start bit and the stop bit to the serial data, thereby converting the serial communication data in the UART frame format. Then, the infrared modulation / demodulation circuit modulates the serial communication data to perform IR processing.
Infrared communication data in a frame format is generated and output.

[0008]

When data is transferred between a notebook computer and a portable telephone as described above using infrared communication by such an infrared communication device, the following is required. A problem is assumed.

That is, as described above, since two data having different communication speeds of control data and user data must be transferred between the notebook personal computer and the portable telephone, the serial communication for control data is performed. It is necessary to provide two serial communication circuits, a circuit and a serial communication circuit for user data. Then, as described above, since the infrared modulation / demodulation circuit and the serial communication circuit generally correspond one-to-one, two infrared modulation / demodulation circuits corresponding to the two serial communication circuits are provided. It is necessary to provide.

However, in such a configuration in which two serial communication circuits are provided and two infrared modulation / demodulation circuits are provided, the size of the infrared communication device itself becomes large. When the portable telephone is built in the telephone, the weight and size of the portable telephone are hindered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has as its object the purpose of preventing the device from being enlarged as a whole and incorporating the device into a portable wireless communication device such as a portable telephone. In this case, an object of the present invention is to provide an infrared communication device that does not hinder the weight reduction and size reduction of the wireless communication device and that can improve the usability.

[0012]

According to the first aspect of the present invention, when the receiving means receives infrared communication data in the form of an IR frame conforming to the IrDA standard from outside, the demodulation means demodulates the infrared communication data. As a result, communication data in the UART frame format conforming to the IrDA standard is generated, and the identification means identifies the pulse width of the infrared communication data. Then, the reception switching control means controls the communication data output from the demodulation means to be provided to the communication data processing means corresponding to the pulse width identified by the identification means based on the identification result obtained by the identification means. Control switching.

That is, according to the present invention, in the infrared communication, the infrared communication data in the IR frame format conforming to the IrDA standard outputs a pulse signal having a bit period of (3/16) time corresponding to data "0". In other words, by identifying the time width (pulse width) of the pulse signal of the infrared communication data, the infrared communication data is transmitted to the communication device corresponding to the pulse width of the plurality of communication data processing means. It is provided to the data processing means.

More specifically, as the infrared communication data, for example, control data of 0.6 kbit / s and 9.6 kbit / s
/ S of user data can be received, they are:
When received by the receiving means, it is demodulated by the demodulating means and the pulse width is identified by the identifying means.
Then, based on the identification result of the identification means, the infrared communication data received as control data is provided to the communication data processing means for control data, while the infrared communication data received as user data is It is provided to communication data processing means for user data.

According to this, when receiving a plurality of infrared communication data having different communication speeds, one demodulation means can cope with the plurality of communication data processing means as described above. Therefore, the size of the infrared receiver is not increased. Accordingly, when the infrared receiver is incorporated in a portable wireless communication device such as a mobile phone, the wireless communication device does not hinder the weight and size reduction of the wireless communication device. By adopting communication, data reception can be performed wirelessly, so that usability can be improved.

According to the second aspect of the present invention, the plurality of communication data processing means generates UART frame format communication data conforming to the IrDA standard, and the transmission switching control means
When switching control is performed such that communication data output from any one of the plurality of communication data processing means is provided to the modulation means, the modulation means modulates the given communication data. Process and Ir
The transmission means generates infrared communication data in the IR frame format conforming to the DA standard, and the transmission means transmits the infrared communication data output from the modulation means to the outside.

Thus, a plurality of serial data having different communication speeds, specifically, for example, 0.6 kbit, can be utilized by utilizing the plurality of communication data processing means according to the first aspect.
/ S control data and 9.6 kbit / s user data can be converted into infrared communication data and transmitted to the outside.

According to this, when transmitting a plurality of infrared communication data having different communication speeds, as described above, one modulation means must correspond to a plurality of communication data processing means. Therefore, the size of the infrared transmitting apparatus is not increased. Accordingly, when the infrared transmitter is incorporated in a portable wireless communication device such as a mobile phone, the wireless communication device does not hinder the weight reduction and downsizing of the wireless communication device. By employing communication, data transmission can be performed wirelessly, so that usability can be improved as in the case of the first aspect.

According to the third aspect of the present invention, by providing the infrared receiving device according to the first aspect and the infrared transmitting device according to the second aspect, a plurality of infrared communication data having different communication speeds, specifically, Is, for example, 0.6 kbit /
s control data and 9.6 kbit / s user data can be transmitted and received.

According to this, when performing communication (transmission / reception) processing on a plurality of infrared communication data having different communication speeds, as described above, one demodulation means and one demodulation means are provided for a plurality of communication data processing means. Since one modulation means can cope with the situation, the size of the infrared communication device is not increased. Accordingly, when the infrared communication device is incorporated in a portable wireless communication device such as a mobile phone, the wireless communication device does not hinder the weight reduction and downsizing of the wireless communication device. By adopting the communication, the data communication can be performed wirelessly, so that the usability can be improved as in the first and second aspects.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is incorporated in a portable telephone as a portable radio communication device will be described below with reference to the drawings. First, in FIG. 2 showing the entire configuration of the mobile phone 1, a “start” key 3a, a “redial” key 3b,
"End" key 3c, numeric keys 3d of "0" to "9" (in FIG. 2, reference numerals are given representing "3"), "*"
(Asterisk) key 3e, "#" (sharp) key 3
f, "call / memory" key 3g, "F (function)" key 3h, "power" key 3i, "clear" key 3
j, a key operation unit 3 provided with an "up scroll" key 3k and a "down scroll" key 31, a display 4 for displaying a message or a telephone number, a microphone (transmitter) 5, and a speaker (receiver) 6 Is provided.

An antenna 7 is provided on the upper side of the housing 2, and a 16-core connector 8 and an infrared sensor 9 are provided on the lower side. In this case, the infrared sensor 9 includes a photodiode 10 as a receiving unit.
In addition, an infrared light emitting diode 11 as a transmitting means is integrally incorporated (see FIG. 1).

Next, the electrical configuration of the above-described portable telephone 1 will be described with reference to FIG. Control circuit 12
Is mainly composed of a microcomputer. The control circuit 12 is connected to a transmission / reception unit 13, a data conversion unit 14, a voice processing unit 15, and a storage unit 16, and has the above-described key operation unit 3, Display 4
Is connected. The audio processing unit 15 is connected to the microphone 5 and the speaker 6 described above, and is also connected to the data conversion unit 14.
Is connected to the transmission / reception unit 13, and the transmission / reception unit 13
The above-mentioned antenna 7 is connected.

The audio processing unit 15 generates audio data by encoding the reception signal given from the microphone 5, and outputs the audio data to the data conversion unit 14. The conversion unit 14 converts the voice data provided from the voice processing unit 15 into call data, and outputs the call data to the transmission / reception unit 13. The transmission / reception unit 13 modulates the carrier with the communication data provided from the data conversion unit 14 to transmit the communication data as a transmission signal from the antenna 7 to the base station.

The transmission / reception unit 13 demodulates the communication data provided as a reception signal from the base station to the antenna 7 and converts the demodulated communication data to the data conversion unit 14.
The data conversion unit 14 converts the call data provided from the transmission / reception unit 13 into voice data, and outputs the voice data to the voice processing unit 15. The audio processing unit 15 generates a transmission signal by decoding the audio data provided from the data conversion unit 14, and outputs the transmission signal to the speaker 6.

The control circuit 12 is connected to an infrared communication unit 17 as an infrared communication device. The infrared communication unit 17 includes an infrared modulation / demodulation unit 18, a high-speed serial communication unit 19 and a low-speed serial communication unit 20 as communication data processing means, a reception switching unit 21 as reception switching control means,
It comprises a transmission switching unit 22 as transmission switching control means. And the infrared modulator / demodulator 18
Has a demodulation unit 23 as demodulation means, a pulse width measurement unit 24 and a determination unit 25 as identification means, and a modulation unit 26 as modulation means, in addition to the photodiode 10 and the infrared light emitting diode 11 described above. Have been.

Thus, in such a configuration, the photodiode 10, the demodulation unit 23, the pulse width measurement unit 2
4, an infrared receiving unit 27 that operates as an infrared receiving device is configured by the determination unit 25, the high-speed serial communication unit 19, the low-speed serial communication unit 20, and the reception switching unit 21;
Infrared light emitting diode 11, modulator 26, high-speed serial communication unit 19, low-speed serial communication unit 20, and infrared transmission unit 2 operating as an infrared transmission device from transmission switching unit 22
8 is constituted.

A notebook personal computer (hereinafter abbreviated as "notebook computer") 29 is arranged outside the mobile phone 1, and an infrared sensor 30 is provided at a predetermined portion on the back side thereof. The infrared sensor 30 has a structure in which a photodiode (not shown) and an infrared light emitting diode (not shown) are integrally incorporated, similarly to the infrared sensor 9 provided in the mobile phone 1 described above. .

The photodiode 10 of the portable telephone 1 is connected to the infrared sensor 30 of the notebook computer 29.
When the infrared communication data in the IR frame format conforming to the IrDA standard transmitted from is received, the infrared communication data is converted from an optical signal to an electric signal and output to the demodulation unit 23 and output to the pulse width measurement unit 24. It has become.

Upon receiving the infrared communication data from the photodiode 10, the demodulation unit 23 demodulates the infrared communication data and converts the infrared communication data into UART frame format serial communication data (communication data in the present invention) conforming to the IrDA standard. The serial communication data is generated and the reception switching unit 2
1 is output.

Upon receiving the infrared communication data from the photodiode 10, the pulse width measurement unit 24 measures the pulse width of the start bit of the infrared communication data, and outputs the obtained measurement value to the determination unit 25. When the measurement value is given from the pulse width measurement unit 24, the determination unit 25 outputs a reception switching command signal based on the measurement value to the reception switching unit 21.

The reception switching unit 21 determines the first connection state and the second connection state based on the reception switching command signal given from the determination unit 25.
The connection state is switched between the first and second connection states. When the first connection state is established, the serial communication data supplied from the demodulation section 23 is transmitted to the high-speed serial communication section 19.
, And in the second connection state, the serial communication data provided from the demodulation unit 23 is output to the low-speed serial communication unit 20.

The high-speed serial communication unit 19 and the low-speed serial communication unit 20 remove the UART frame format serial communication data provided from the demodulation unit 23 via the reception switching unit 21 and remove the start bit and the stop bit therefrom. To generate serial data.

The high-speed serial communication section 19 and the low-speed serial communication section 20 generate serial communication data by adding a start bit and a stop bit to the serial data, and transmit the serial communication data to the transmission switching section 22. Output.

The transmission switching section 22 switches the connection state between a first connection state and a second connection state based on a transmission switching command signal given from the control circuit 12. Is connected to the modulator 26 of the infrared modulator / demodulator 18 while the second connection state is provided from the low-speed serial communication unit 20. The serial communication data is output to the modulator 26.

When serial communication data is supplied from one of the high-speed serial communication unit 19 and the low-speed serial communication unit 20 via the transmission switching unit 22, the modulation unit 26 modulates the serial communication data to perform IR processing. Infrared communication data in a frame format is generated, and the infrared communication data is output to the infrared light emitting diode 11.

When receiving infrared communication data from the modulation section 26, the infrared light emitting diode 11 converts the infrared communication data from an electric signal to an optical signal and converts the data into an external signal. Infrared sensor 3
0 is transmitted.

In the configuration described above, between the portable telephone 1 and the notebook computer 29, control data of 0.6 kbit / s and 9.6 kb are used as infrared communication data.
In the infrared communication unit 17, high-speed serial communication is performed so as to correspond to control data and user data having different communication speeds. The unit 19 includes:
While processing 6 kbit / s user data, the low-speed serial communication unit 20 processes 0.6 kbit / s control data.

Next, the operation of the above configuration will be described with reference to FIG. In the explanation, the serial data is
As an example, as shown in FIG. 3, "1,0,1,0,
0, 1, 1, 0 ". First, the operation when the mobile phone 1 receives the infrared communication data transmitted from the notebook computer 29 will be described.

For example, when the user operates the notebook personal computer 29, the infrared sensor 30 of the notebook personal computer 29 sends infrared communication data in the form of an IR frame (FIG. 3).
(Refer to (a)), the photodiode 10 of the infrared sensor 9 of the mobile phone 1 receives the infrared communication data.
The signal is converted from an optical signal to an electric signal by 0, output to the demodulation unit 23, and output to the pulse width measurement unit 24.

The infrared communication data provided to the demodulation unit 23 is demodulated and converted into UART frame format serial communication data (see FIG. 3B) conforming to the IrDA standard, and the serial communication data is received. Switching section 21
Is output to In the infrared communication data provided to the pulse width measurement unit 24, the time width (pulse width) of the pulse signal of the start bit is measured. Then, when the pulse width measuring unit 24 gives the measured value to the determining unit 25, the determining unit 25 outputs a reception switching command signal based on the measured value to the receiving switching unit 21.

Now, the infrared communication data in the IR frame format transmitted from the notebook computer 29 is shown in FIG.
As shown in (a), the configuration is such that data "0" as a start bit and data "1" as a stop bit are added to 8-bit serial data. A pulse signal of (3/16) time of the bit cycle is output corresponding to "0".

Therefore, in this case, when the infrared communication data is control data of 0.6 kbit / s, the time width of the pulse signal, that is, the pulse width is (1 / 3.2).
k) seconds and the infrared communication data is 9.6 kbit / s
, The pulse width is (（)
1.2k) seconds.

When (1 / 3.2k) is given as a measured value from the pulse width measurement unit 24 to the determination unit 25, the determination unit 25 sends the received value to the reception switching unit 21.
A reception switching command signal for connecting and setting 1 to the second connection state is output. Then, in response to this, the reception switching unit 21 enters the second connection state, and the demodulation unit 23 sends the reception switching unit 21
Is output to the low-speed serial communication section 20 as control data.

Then, the serial communication data as control data given to the low-speed serial communication unit 20 is converted into serial data by removing the start bit and the stop bit from the serial communication data. Output to the control circuit 12.

In this manner, the control data can be transferred from the notebook personal computer 29 to the portable telephone 1 by infrared communication, and the portable telephone 1 communicates between the portable telephone 1 and the notebook personal computer 29 based on the control data. Transfer control can be performed.

On the other hand, when (1 / 51.2k) is given as a measurement value from the pulse width measurement unit 24 to the determination unit 25, the determination unit 25 sends the reception switching unit 21 to the reception switching unit 21. A reception switching command signal for setting connection to the connection state of No. 1 is output. Then, in response to this, the reception switching unit 21 enters the first connection state, and the serial communication data as the user data supplied from the demodulation unit 23 to the reception switching unit 21 is output to the high-speed serial communication unit 19.

The serial communication data as the user data supplied to the high-speed serial communication section 19 is the same as the above-described serial communication data as the control data supplied to the low-speed serial communication section 20, and then the start bit and the By removing the stop bit, the data is converted into serial data, and the serial data as user data is output to the control circuit 12.

In this manner, the user data can be transferred from the notebook personal computer 29 to the mobile phone 1 by infrared communication, and the mobile phone 1 performs the predetermined processing to transmit the user data to the transmission / reception unit 13. To be transmitted to the base station.

Next, an operation when the mobile phone 1 receives serial data as user data transmitted from the base station will be described. When serial data as user data transmitted from the base station is provided to the control circuit 12 via the transmission / reception unit 13, first, prior to transfer of the user data, the control circuit 12 generates serial data as control data. The serial data as the control data is output to the low-speed serial communication unit 20. At this time, the control circuit 12 instructs the transmission switching unit 22 to set the transmission switching unit 22 to the second connection state. A signal is output.

The serial data as control data given to the low-speed communication section 20 is converted into UART-type serial communication data by adding a start bit and a stop bit thereto. Then, the serial communication data is output to the modulation unit 26 since the transmission switching unit 22 is in the second connection state.

The serial communication data as control data given to the modulator 26 is modulated and converted into infrared communication data in the form of an IR frame. The infrared communication data as control data is sent to the infrared light emitting diode 11. The signal is converted from an electric signal to an optical signal by the infrared light emitting diode 11, and is output to the outside, in this case, the infrared sensor 30 of the notebook computer 29.

In this way, prior to the transfer of the user data, the control data can be transferred from the mobile phone 1 to the notebook computer 29 by infrared communication. 1 and the notebook computer 29 can be controlled.

Thereafter, the serial data as user data given to the control circuit 12 is output to the high-speed serial communication section 19, and at this time, the transmission switching section 22 is transmitted from the control circuit 12 to the transmission switching section 22. A transmission switching command signal for setting connection in the first connection state is output.

The serial data as the user data supplied to the high-speed serial communication section 19 is the same as the serial data as the control data supplied to the low-speed serial communication section 20, and a start bit and a stop bit are added thereto. As a result, the serial communication data is converted into UART serial communication data, and the serial communication data as the user data is output to the modulation unit 26 since the transmission switching unit 22 is in the first connection state.

The serial communication data as the user data given to the modulator is modulated and converted into infrared communication data in the form of an IR frame. The infrared communication data as the user data is transmitted to the infrared light emitting diode 11. Is converted from an electric signal to an optical signal by an external device, in this case, the infrared sensor 3 of the notebook computer 29.
Output to 0.

In this manner, the user data can be transferred from the mobile phone 1 to the notebook personal computer 29 by infrared communication, and the mobile phone 1 can transmit the user data transmitted from the base station to the notebook personal computer 29. Will be able to

As described above, according to the present embodiment, the infrared communication unit 17 is provided in the portable telephone 1 as a portable wireless communication device, and data transfer between the notebook personal computer 29 and the portable telephone 1 arranged outside. Are configured to be performed by infrared communication, so that when data is transferred between the notebook personal computer 29 and the mobile phone 1, the data transfer can be performed wirelessly. There is no need to connect with cables,
Usability can be improved.

In the infrared communication unit 17, the reception switching unit 21, the pulse width measurement unit 24
A determination unit 25, and when receiving the infrared communication data, the pulse width measurement unit 24 and the determination unit 25 measure the pulse width of the infrared communication data, and based on the measured value, the infrared communication data is converted to the high-speed serial communication data. Since it is configured to be provided to any one of the unit 19 and the low-speed serial communication unit 20, when receiving a plurality of infrared communication data (control data, user data) having different communication speeds, one demodulation unit 23, that is, ,
One infrared modulation / demodulation unit 18 can cope with this, so that the size of the infrared reception unit 17 does not increase. Also,
Along with this, there is no hindrance to the reduction in the weight and size of the mobile phone 1 incorporating the infrared receiver 17.

In particular, in this case, in the infrared communication data, since the pulse width of the start bit which is the data "0" from which the pulse signal is reliably output is measured, the serial data is all converted from the data "1". Even in such a case, the above-described reception processing can be performed favorably.

Further, a transmission switching section 22 is provided in the infrared modulation / demodulation section 18, and when transmitting infrared communication data, the high-speed serial communication section 19 is transmitted in accordance with a command from the control circuit 12.
In addition, since the serial communication data output from one of the low-speed serial communication units 20 is configured to be converted into infrared communication data, a plurality of infrared communication data (control data, user data) having different communication speeds are transmitted. In this case, one modulation unit 26, that is, one infrared modulation / demodulation unit 18 can be used.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The configuration is not limited to the mobile phone, and may be built in other portable wireless communication devices. The control data and user data are not limited to 0.6 kbit / s or 9.6 kbit / s, and may be used for other communication. It may be speed.

As an infrared sensor for a portable telephone or a notebook personal computer, an infrared light emitting diode (light emitting element) and a photodiode (light receiving element) may be configured separately. The device provided outside is not limited to a notebook computer, but may be another device having an infrared communication function.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an external perspective view of a mobile phone.

FIG. 3 is a diagram showing infrared communication data and serial communication data.

[Explanation of symbols]

In the drawing, 10 is a photodiode (receiving means), 11 is an infrared light emitting diode (transmitting means), 17 is an infrared communication unit (infrared communication device), 18 is an infrared modulation / demodulation unit, and 19 is a high-speed serial communication unit (communication data processing). Means, 20 is a low-speed serial communication section (communication data processing means), 21 is a reception switching section (reception switching control means), 22 is a transmission switching section (transmission switching control means), 23 is a demodulation section (demodulation means), 24 Is a pulse width measuring unit (identifying means), 25 is a determining unit (identifying means),
26 is a modulating unit (modulating means), 27 is an infrared receiving unit (infrared receiving device), 28 is an infrared transmitting unit (infrared transmitting device)
It is.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04B 10/04 10/06

Claims (3)

[Claims] 1. A receiving means for receiving infrared communication data in an IR frame format conforming to the IrDA standard from the outside, and a demodulating process of the infrared communication data received by the receiving means to perform a UART frame format conforming to the IrDA standard. Demodulation means for generating communication data; a plurality of communication data processing means for processing communication data output from the demodulation means; identification means for identifying a pulse width of infrared communication data received by the reception means; Communication data output from the demodulation means based on the identification result obtained by the identification means is provided to communication data processing means corresponding to the pulse width identified by the identification means among the plurality of communication data processing means. And a reception switching control means for performing switching control as described above. A plurality of communication data processing means for generating communication data in a UART frame format conforming to the IrDA standard; and a communication data output from the plurality of communication data processing means being modulated to comply with the IrDA standard. Modulation means for generating infrared communication data in IR frame format; transmission means for transmitting infrared communication data output from the modulation means to the outside; communication data processing means of any of the plurality of communication data processing means Transmission switching control means for performing switching control so that communication data output from the communication means is supplied to the modulation means. 3. An infrared communication device comprising: the infrared receiving device according to claim 1; and the infrared transmitting device according to claim 2.