JP2010171910A - Onboard communication apparatus and communication control program - Google Patents

Abstract

Even when signals of a plurality of types of communication standards are mixed as signals handled by a communication device at a connection destination, communication automatically adapts to the corresponding communication standards without requiring switching of a switch or the like. .
At least one signal processing unit capable of inputting / outputting communication data corresponding to a first communication standard and a second communication standard different from the first communication standard, and the signal processing Control unit, based on the operating state of the signal processing unit or the state of the received signal, the compatibility with the first condition specific to the first communication standard, and the second specific to the second communication standard And a communication control unit that automatically selects a communication method that conforms to the first communication standard or the second communication standard according to the identification result.
[Selection] Figure 1

Description

  The present invention relates to an in-vehicle communication device that can be selectively connected to a plurality of types of counterpart communication devices that use different communication standards, and a communication control program for controlling the same.

  Generally, various electronic devices are mounted on a vehicle such as an automobile. In addition, an electronic device equipped with a communication interface can be connected to a communication network on the vehicle so that a plurality of electronic devices can communicate with each other.

  Conventionally, there are a plurality of types of communication standards for communication standards for electronic devices mounted on such vehicles. Therefore, each in-vehicle electronic device does not switch the signal processing or communication protocol in the electric circuit of the communication interface so as to meet the communication standard adopted by the other in-vehicle electronic device of the connection partner or the communication network of the connection destination. Unable to communicate with.

  Actually, there are various types of vehicles, and communication networks that employ different communication standards for each vehicle type are installed. Moreover, even in the case of vehicles of the same vehicle type, there are many cases where communication networks adopting different communication standards are mounted according to differences in variations.

  Therefore, when an in-vehicle electronic device equipped with a communication function is installed in a vehicle, the communication applied to each vehicle type and variation of the target vehicle so that each in-vehicle electronic device conforms to the communication standard of the communication partner. There was a need to switch standards.

  Therefore, generally, a plurality of types of in-vehicle electronic devices having different communication standards are prepared in advance. Then, an operator selects an in-vehicle electronic device that matches the type and variation of the vehicle to be mounted, and the corresponding in-vehicle electronic device is assembled to the vehicle. In addition, a plurality of communication interfaces corresponding to each of a plurality of communication standards and a physical switch for switching the communication standard to be employed may be preinstalled in each in-vehicle electronic device. In that case, the operator has performed the switching operation of the switch according to the type and variation of the vehicle to be mounted.

  For example, Patent Document 1 discloses a technique related to a device equipped with a plurality of communication interfaces, although this is not a technique related to an on-vehicle electronic device. In Patent Document 1, in order to reduce power consumption related to a communication interface, it is determined whether data is received from a Bluetooth interface or an IrDA interface, and power supply to other than the interface that received the data is automatically stopped. Has proposed.

JP 2005-131876 A

  However, when an in-vehicle electronic device is mounted on a target vehicle, when an operator performs an operation such as selecting an in-vehicle electronic device suitable for the vehicle type or variation of the vehicle or switching a switch to a suitable state. Are prone to mistakes and operation mistakes. When in-vehicle electronic devices that do not match the communication standards are connected due to operator error or operation error, not only does each in-vehicle electronic device become unable to communicate, but for example, the influence of abnormal received data input from the communication interface Therefore, there is a high possibility that the computer inside the in-vehicle electronic device runs out of control and the in-vehicle electronic device stops operating at all.

  In the prior art disclosed in Patent Document 1, when a plurality of wireless communication interfaces such as a Bluetooth interface or an IrDA interface are installed, it is distinguished which wireless communication interface has received a signal from the other party. The result is reflected in the control. However, since the types of signals handled by Bluetooth and IrDA are completely different from each other, it is very easy to distinguish these signals. That is, the Bluetooth interface communicates using radio waves in the 2.4 GHz frequency band, whereas the IrDA interface communicates using infrared rays, so the signals of both cannot be confused.

  On the other hand, when wiring communication cables for in-vehicle electronic devices, even if the supported communication standards are different, a common communication cable or a common connector is often used. Therefore, there is a high possibility that multiple types of signals with different communication standards are input to the in-vehicle electronic device. That is, for signals input to the in-vehicle electronic device, signals of a plurality of types of communication standards are mixed. For this reason, in the case of an in-vehicle electronic device, for example, a switch switching operation or the like is necessary in order to distinguish the type of signal actually handled. Therefore, mistakes and operational mistakes by operators have been unavoidable.

  In addition, software for controlling the communication of in-vehicle electronic devices must be prepared separately for each communication standard, and it is unavoidable to increase the costs associated with software development and the management of multiple types of software. There wasn't.

  The present invention has been made in view of the above-described circumstances, and its purpose is to switch a switch or the like even when signals of a plurality of types of communication standards are mixed as signals handled by a communication device at a connection destination. It is an object of the present invention to provide an in-vehicle communication device and a communication control program capable of automatically adapting and communicating with a corresponding communication standard without the need for communication.

In order to achieve the above-described object, the in-vehicle communication device according to the present invention is characterized by the following (1) to (7).
(1) An in-vehicle communication device that can be connected to a communication device on the other side according to various communication standards,
At least one signal processing unit capable of inputting and outputting communication data corresponding to a first communication standard and a second communication standard different from the first communication standard;
The signal processing unit is controlled, and based on the operating state of the signal processing unit or the state of the received signal, the compatibility with the first condition specific to the first communication standard, and the second communication standard A communication control unit that identifies compatibility with the specific second condition and selects a communication method that conforms to the first communication standard or the second communication standard according to the identification result.
(2) In the in-vehicle communication device having the configuration (1),
The signal processing unit includes a first signal processing unit that performs signal processing corresponding to the first communication standard, and a second signal processing unit that performs signal processing corresponding to the second communication standard. ,
The communication control unit includes the first signal processing unit and the second signal processing unit based on respective operation states of the first signal processing unit and the second signal processing unit or signal states received by each of the first signal processing unit and the second signal processing unit. Selecting one of the signal processing units satisfying a predetermined condition.
(3) In the in-vehicle communication device having the configuration (2),
When the communication control unit detects that the first signal processing unit is operating correctly, the communication control unit stops the operation of the second signal processing unit, and the second signal processing unit operates correctly. If it is detected, stop the operation of the first signal processing unit.
(4) In the in-vehicle communication device having the configuration (1),
The communication control unit corresponds to the first communication standard output from the signal processing unit when compatibility with the first condition and compatibility with the second condition are unknown. The communication method corresponding to the correct received data is selected by referring to the contents of at least one of the received data and the received data corresponding to the second communication standard.
(5) In the in-vehicle communication device having the configuration (1),
The communication control unit repeats processing for selecting a communication method for at least a predetermined time until a communication method conforming to a communication standard is determined.
(6) In the in-vehicle communication device having the configuration (5),
If the communication method is not determined until the predetermined time has elapsed, the communication control unit stops communication operation until power is turned on again by an ignition switch of the vehicle.
(7) In the in-vehicle communication device having the configuration (2),
A first signal line for passing a signal transmitted and received by the first signal processing unit and a transmission and reception of the second signal processing unit inside a single common connector for connecting to the counterpart communication device And a second signal line for passing a signal to be transmitted.

According to the in-vehicle communication device having the configuration (1) above, even when signals of a plurality of types of communication standards appear on a common communication interface, the communication method is automatically set according to the counterpart communication device of the connection destination. You can choose. In other words, when the connected counterpart communication device adopts the first communication standard, a communication method corresponding to the first communication standard is selected, and the counterpart communication device adopts the second communication standard. If so, a communication method corresponding to the second communication standard is selected. Therefore, an operator's switch operation or the like for switching the communication standard is not necessary. Moreover, since common software can be used for communication of a plurality of communication standards, software development costs and management costs can be reduced.
According to the vehicle-mounted communication device having the configuration (2), since it includes a plurality of independent signal processing units, it can cope with various communication standards.
According to the in-vehicle communication device having the configuration (3), it is possible to automatically stop the unnecessary operation of the first signal processing unit and the second signal processing unit. Thereby, useless power consumption can be suppressed. In addition, since interrupt requests generated from unused circuits can be suppressed, the processing efficiency can be improved.
According to the in-vehicle communication device having the configuration (4), it is difficult to determine compatibility with the communication standard only by the operation related to communication, as in the case where protocols of a plurality of types of communication standards are very similar to each other. It is possible to correctly discriminate it even in a difficult situation. For example, whether or not the received data is correct can be identified based on the presence or absence of an error included in the received data, and compatibility with the communication standard can be determined.
According to the in-vehicle communication device having the configuration of (5) above, there are cases where protocols of a plurality of types of communication standards are very similar to each other, or when it takes time until a situation peculiar to each communication standard appears. In addition, the compatibility with the communication standard can be correctly determined. In other words, even in situations where it is difficult to identify with only one identification process, by repeating the identification process for a predetermined time, it is possible to wait until a situation specific to each communication standard appears, and a correct discrimination result is obtained. .
According to the in-vehicle communication device having the configuration (6), malfunction of the device due to abnormal communication can be prevented. For example, if the computer of the connected device or the connected device is running out of control, there is a high possibility that it will return to a normal state when the power is turned on again. Determine.
According to the in-vehicle communication device having the configuration (7), it is possible to connect a plurality of types of devices having different communication standards using a common connector, so there is no need to prepare a plurality of connectors and a plurality of communication cables. No connection errors will occur.

In order to achieve the above-described object, a communication control program according to the present invention is characterized by the following (8).
(8) A communication control program for causing a computer that controls an in-vehicle communication device connectable to a communication device on the other side according to various communication standards,
A first step for identifying whether or not a condition for conformity with a first condition specific to the first communication standard is satisfied;
A second step of identifying whether or not a condition for conformity with a second condition specific to a second communication standard different from the first communication standard is satisfied;
And a third step of selecting a communication method conforming to the first communication standard or the second communication standard according to the result of the first step or the second step.

  By executing the communication control program having the configuration (8) on the computer, it is possible to automatically select an appropriate communication method in accordance with the communication standard of the signal handled by the counterpart communication device at the connection destination. Therefore, an operator's switch operation or the like for switching the communication standard is not necessary. Moreover, since common software can be used for communication of a plurality of communication standards, software development costs and management costs can be reduced.

  According to the present invention, even when a signal of a plurality of types of communication standards is mixed as a signal handled by a connection destination communication device, it is automatically changed to the corresponding communication standard without requiring switching of a switch or the like. It becomes possible to communicate with adapting to. Moreover, since common software can be used for communication of a plurality of communication standards, software development costs and management costs can be reduced.

  The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading through the modes for carrying out the invention described below with reference to the accompanying drawings.

It is a block diagram which shows the structure of the vehicle-mounted communication apparatus in embodiment. It is a flowchart which shows the main operation | movement of the vehicle-mounted communication apparatus shown in FIG.

  Specific embodiments relating to the in-vehicle communication device and the communication control program of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram illustrating a configuration of an in-vehicle communication device according to an embodiment. FIG. 2 is a flowchart showing main operations of the in-vehicle communication apparatus shown in FIG.

  The system shown in FIG. 1 includes an in-vehicle communication device 10 that can communicate with each other, an external communication device 20, and a connection cable 30 that connects them. This system is installed in vehicles such as automobiles.

  As typical examples corresponding to the in-vehicle communication device 10 and the external communication device 20, a power window control device, a door lock control device, a rearview mirror control device, an engine control device, a light control device, and the like are assumed. Although FIG. 1 shows a system in which the in-vehicle communication device 10 and the external communication device 20 are connected, in an actual vehicle, a large number of three or more devices are often connected to each other via a common network.

  Although this type of control device can operate alone, it is necessary to exchange command signals with external devices and to input and output information necessary for control. It is necessary to perform data communication between them.

  Various communication standards are currently used for in-vehicle device communication. Typical examples of communication standards that are actually used include UART (Universal Asynchronous Receiver Transmitter), LIN (Local Interconnect Network), CAN ( Controller Area Network). In many cases, the type of communication standard that is actually adopted is determined for each vehicle type. Moreover, even if it is the same vehicle model, the communication standard employ | adopted according to the difference of various variations may be changed.

  Therefore, when the worker intends to install the in-vehicle communication device 10 shown in FIG. 1 in a certain vehicle, the communication standard employed by the external communication device 20 that is the communication partner is not determined in advance. There is a possibility that the in-vehicle communication device 10 and the external communication device 20 cannot communicate due to non-conformance with the standard.

  One in-vehicle communication device 10 shown in FIG. 1 is compatible with two types of communication standards, UART and LIN. That is, if the external communication device 20 adopts the UART or LIN communication standard, communication between the in-vehicle communication device 10 and the external communication device 20 becomes possible.

  In addition, the in-vehicle communication device 10 shown in FIG. 1 has a single common connector 14 that can be used in common for two types of communication standards, UART and LIN. That is, even if the external communication device 20 adopts any of the two communication standards UART and LIN, the common connection cable 30 is connected to the common connector 14 and communication is performed via the connection cable 30. I do. Accordingly, when viewed from the in-vehicle communication device 10, the external communication device 20 adopting the UART communication standard may be connected to the common connector 14, or the external communication device 20 adopting the LIN communication standard may be connected. In some cases. That is, the in-vehicle communication device 10 may communicate with a counterpart device (external communication device 20) connected to the common connector 14 in accordance with a UART communication standard or in accordance with a LIN communication standard. .

  As shown in FIG. 1, the in-vehicle communication device 10 includes a main control unit (MET MCU: microcontroller) 11, a LIN transceiver 12, a UART interface (I / F) circuit 13, and a common connector 14.

  The main control unit 11 has a built-in microcomputer, and performs a predetermined operation for realizing the function of the in-vehicle communication device 10 by executing a predetermined program prepared in advance on an internal memory. This operation includes processing for data communication, and includes processing as shown in FIG. 2 for automatically selecting a communication standard or communication method.

  The LIN transceiver 12 is a standard signal processing circuit used as an interface when communicating in accordance with the LIN communication standard. That is, a signal transmitted from the main control unit 11 is converted into a transmission signal that conforms to the LIN communication standard, and a reception signal that conforms to the LIN communication standard is input from the common connector 14 so that the main control unit 11 can process it. Convert to signal.

  Specifically, a signal appearing at the output port P4 of the main control unit 11 is input to the LIN transceiver 12 as a serial transmission signal (LIN Tx) for LIN communication. Further, the serial reception signal (LIN Rx) for LIN communication output from the LIN transceiver 12 is input to the input port P5 of the main control unit 11. The serial reception signal (LIN Rx) is also input to the interrupt request input port P6 of the main control unit 11 as a LIN communication reception interrupt signal (LIN Rx INT). A signal output from the main control unit 11 to the output port P7 is input to the LIN transceiver 12 as a sleep control signal (LIN NSLP) for LIN communication. The input / output port 12a of the LIN transceiver 12 is connected to a LIN communication bus (LIN bus). In the LIN communication bus, a transmission signal and a reception signal appear on a single line (single wire). When used in a standard automobile, a DC battery voltage of about 12V appears on the LIN communication bus when no signal appears.

  On the other hand, the UART interface circuit 13 is a standard signal processing circuit used as an interface when communicating according to the UART communication standard. As shown in FIG. 1, a signal output from the output port P1 of the main control unit 11 is input to the UART interface circuit 13 as a serial transmission signal (UART Tx) for UART communication. A serial reception signal (UART Rx) for UART communication output from the UART interface circuit 13 is input to the input port P <b> 2 of the main control unit 11. The serial reception signal (UART Rx) is also input to the interrupt request input port P3 of the main control unit 11 as a reception interrupt signal (UART Rx INT) for UART communication.

  The common connector 14 includes a plurality of terminals to enable connection of a plurality of independent signal lines. One terminal on the common connector 14 is connected to the port 12a of the LIN transceiver 12 for use as a LIN communication bus (LIN bus). Further, the other two terminals on the common connector 14 are respectively connected to two terminals of the UART interface circuit 13 for use as communication lines (two lines) for UART communication. The communication line for UART communication includes a line for passing a serial transmission signal (UART Tx) and a line for passing a serial reception signal (UART Rx).

  As shown in FIG. 1, the connection cable 30 for connecting the in-vehicle communication device 10 and the external communication device 20 includes three signal lines 31 to 33. However, one of the signal lines 31 to 33 may be omitted. For example, the signal lines 32 and 33 are not necessary when the external communication device 20 is equipped with only the LIN standard communication interface, and the signal line 31 is not necessary when only the UART standard communication interface is installed. It is.

  The operation of the main control unit 11 on the in-vehicle communication device 10 is shown in FIG. Actually, the main control unit 11 performs various controls, but FIG. 2 shows only processing for automatically selecting one of a plurality of communication methods. The operation of the main control unit 11 shown in FIG. 2 will be described below.

  When the ignition switch of the vehicle is turned on and electric power is supplied from the in-vehicle battery to the power source of the in-vehicle communication device 10, the main control unit 11 starts to operate, and the main control unit 11 performs the processing shown in FIG.

  Although not shown in FIG. 2, in the initialization process executed after power-on, the main control unit 11 performs both LIN communication using the LIN transceiver 12 and UART communication using the UART interface circuit 13. Set it to a possible state.

  In step S11, the main control unit 11 refers to the state of the ignition switch and identifies whether or not it is on. When the ignition switch is on, the process proceeds to step S12 and subsequent steps.

  In step S12, the main control unit 11 identifies whether or not a predetermined condition (A) for identifying that the UART communication is being performed is satisfied. Specifically, as a state unique to the UART communication standard, there is a feature that a CRC (Cyclic Redundancy Check) code is connected to communication data. Therefore, it is adopted as the condition (A) that a CRC code is connected to all received data input from the UART interface circuit 13 to the main control unit 11. If the condition (A) is satisfied, the communication method is determined as UART communication, and the process proceeds to step S13. If the communication method is not determined as UART communication, the process proceeds to step S15.

  In step S13, the main control unit 11 stops the operation related to LIN communication thereafter. Specifically, the LIN transceiver 12 is switched to a sleep state, and signal processing related to LIN communication in the main control unit 11 is stopped.

  In step S14, the main control unit 11 limits the subsequent communication processing to only UART communication, and performs transmission / reception processing according to the communication standard of UART communication. That is, the main control unit 11 performs serial data communication with the external communication device 20 via the UART interface circuit 13.

  In step S15, the main control unit 11 identifies whether or not a predetermined condition (B) for identifying that the LIN communication is in operation is satisfied. Specifically, as a state peculiar to the communication standard of LIN, there is a feature that a SYNC (synchronous) break interrupt occurs at the start of communication. Therefore, the condition (B) is that a SYNC (synchronous) break interrupt is generated at the start of communication by a signal input from the LIN transceiver 12 to the main control unit 11. If the condition (B) is satisfied, the communication method is determined as LIN communication, and the process proceeds to step S16. If the communication method is not confirmed as LIN communication, the process proceeds to step S18.

  In step S16, the main control unit 11 stops the operation related to the UART communication thereafter. That is, signal processing related to UART communication inside the main control unit 11 is stopped.

  In step S17, the main control unit 11 limits the subsequent communication processing to only LIN communication, and performs transmission / reception processing according to the communication standard of LIN communication. That is, the main control unit 11 performs serial data communication with the external communication device 20 via the LIN transceiver 12.

  In step S18, the main control unit 11 identifies whether normal reception data related to UART communication has been detected. More specifically, the presence / absence of an error in the received data is identified based on the CRC code added to the received data input from the UART interface circuit 13 to the main control unit 11. Suppose it is abnormal. If normal reception data is detected, the process proceeds to step S19. If abnormal reception data is detected, the process proceeds to step S21.

  In step S <b> 19, the main control unit 11 executes processing according to the communication standard of UART communication for subsequent communication processing. That is, the main control unit 11 performs serial data communication with the external communication device 20 via the UART interface circuit 13.

  In step S20, the main control unit 11 stops the operation related to the LIN communication thereafter. Specifically, the LIN transceiver 12 is switched to a sleep state, and signal processing related to LIN communication in the main control unit 11 is stopped.

  In step S21, the main control unit 11 identifies whether normal reception data related to LIN communication has been detected. Specifically, the contents of the ID field included in the frame of the received data input from the LIN transceiver 12 to the main control unit 11 are referenced to identify whether the contents are correct. When the content of the ID field is correct, it is recognized as normal received data, and when it is not correct, it is recognized as abnormal received data. If normal reception data is detected, the process proceeds to step S22. If abnormal reception data is detected, the process proceeds to step S24.

  In step S22, the main control unit 11 performs subsequent communication processing according to the communication standard of LIN communication. That is, the main control unit 11 performs serial data communication with the external communication device 20 via the LIN transceiver 12.

  In step S23, the main control unit 11 stops the operation related to the UART communication thereafter. That is, signal processing related to UART communication inside the main control unit 11 is stopped.

  In step S24, the main control unit 11 refers to an elapsed time after the ignition switch is turned on (equivalent to the elapsed time since the power is turned on), and this elapsed time has passed a predetermined threshold (for example, 3 seconds). Identify whether or not If it has elapsed, the process proceeds to step S25, and if it has not elapsed, the process returns to step S11.

  In step S25, the main control unit 11 stops both the subsequent LIN communication and UART communication. That is, the communication standard adopted by the external communication device 20 is not either LIN communication or UART communication, or there is a possibility that some malfunction has occurred, so the operation of the LIN transceiver 12 and the operation of the UART interface circuit 13 The communication is terminated until the power is turned on again. Thereby, the occurrence of malfunction can be prevented.

  In the in-vehicle communication device 10 shown in FIG. 1, the LIN transceiver 12 and the UART interface circuit 13 are provided as independent signal processing circuits in order to support both LIN communication and UART communication standards. It is also possible to support a plurality of types of communication standards with only a single signal processing circuit.

  As described above, the in-vehicle communication device and the communication control program of the present invention are actually used in an environment in which a plurality of types of communication standards adopted by a connection partner can exist, such as an electronic device mounted on a vehicle. It can be used to automatically select a communication standard capable of communication. Therefore, if the in-vehicle communication device or the communication control program of the present invention is applied, a selection operation by an operator or the like becomes unnecessary, and the occurrence of selection errors and operation errors can be prevented. Furthermore, it is not necessary to create independent software for each communication standard, and it is possible to reduce software creation costs and management costs.

DESCRIPTION OF SYMBOLS 10 In-vehicle communication apparatus 11 Main control unit 12 LIN transceiver 13 UART interface circuit 14 Common connector 20 External communication apparatus 30 Connection cable 31-33 Signal line P1-P7 Port

Claims (8)

It is an in-vehicle communication device that can be connected to other communication devices with various communication standards,
At least one signal processing unit capable of inputting and outputting communication data corresponding to a first communication standard and a second communication standard different from the first communication standard;
The signal processing unit is controlled, and based on the operating state of the signal processing unit or the state of the received signal, the compatibility with the first condition specific to the first communication standard, and the second communication standard A communication control unit that identifies compatibility with the specific second condition and selects a communication method that conforms to the first communication standard or the second communication standard according to the identification result. In-vehicle communication device. The signal processing unit includes a first signal processing unit that performs signal processing corresponding to the first communication standard, and a second signal processing unit that performs signal processing corresponding to the second communication standard. ,
The communication control unit includes the first signal processing unit and the second signal processing unit based on respective operation states of the first signal processing unit and the second signal processing unit or signal states received by each of the first signal processing unit and the second signal processing unit. The in-vehicle communication device according to claim 1, wherein one of the signal processing units that satisfies a predetermined condition is selected.   When the communication control unit detects that the first signal processing unit is operating correctly, the communication control unit stops the operation of the second signal processing unit, and the second signal processing unit operates correctly. 3. The in-vehicle communication device according to claim 2, wherein when the detection is detected, the operation of the first signal processing unit is stopped.   The communication control unit corresponds to the first communication standard output from the signal processing unit when compatibility with the first condition and compatibility with the second condition are unknown. The in-vehicle communication device according to claim 1, wherein a communication method corresponding to correct received data is selected by referring to at least one of received data and received data corresponding to the second communication standard. .   The in-vehicle communication device according to claim 1, wherein the communication control unit repeats processing for selecting a communication method for at least a predetermined time until a communication method conforming to a communication standard is determined.   The in-vehicle operation according to claim 5, wherein the communication control unit stops the communication operation until the power is turned on again by an ignition switch of the vehicle when the communication method is not fixed until the predetermined time elapses. Communication device.   A first signal line for passing a signal transmitted and received by the first signal processing unit and a transmission and reception of the second signal processing unit inside a single common connector for connecting to the counterpart communication device The in-vehicle communication apparatus according to claim 2, further comprising a second signal line for passing a signal to be transmitted. A communication control program for causing a computer that controls an in-vehicle communication device that can be connected to a counterpart communication device according to various communication standards,
A first step for identifying whether or not a condition for conformity with a first condition specific to the first communication standard is satisfied;
A second step of identifying whether or not a condition for conformity with a second condition specific to a second communication standard different from the first communication standard is satisfied;
A communication control program comprising: a third step of selecting a communication method conforming to the first communication standard or the second communication standard according to the result of the first step or the second step.

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