WO2019013124A1

WO2019013124A1 - Information processing apparatus, electronic device, control method for information processing apparatus, and control program

Info

Publication number: WO2019013124A1
Application number: PCT/JP2018/025690
Authority: WO
Inventors: 弘樹田邊; 秀紀桑島
Original assignee: シャープ株式会社
Priority date: 2017-07-11
Filing date: 2018-07-06
Publication date: 2019-01-17

Abstract

The purpose of the present invention is to prevent problems such as slowdown or interruption of wireless communication between an electronic device and a wireless device even when the electronic device is engaged in wired communication with another electronic device. A control unit (10) is provided with: a determination part (12) for determining whether an external HDD (50) and a smartphone (1) are engaged in wired communication conforming to a prescribed USB standard; and a switching part (11) for referring to the determination result of the determination unit (12) and switching a prescribed wireless frequency band to another wireless frequency band.

Description

INFORMATION PROCESSING DEVICE, ELECTRONIC DEVICE, CONTROL METHOD FOR INFORMATION PROCESSING DEVICE, AND CONTROL PROGRAM

The present invention relates to an information processing apparatus provided in an electronic device connectable to another electronic device by a USB (Universal Serial Bus) cable and the related art.

Many electronic devices that can be wirelessly connected to a wireless device such as a wireless LAN router are configured such that power can be supplied from another electronic device via a USB cable.

For example, Patent Document 1 includes an interface that mediates connection with an electronic device, transmission / reception means for performing communication between the electronic device and the network, communication state detection means for detecting the state of the network, and the state of the electronic device. And a communication control unit having interface control means for controlling the transfer rate of the interface based on at least one of the states of the network.

Japanese Patent Publication "Japanese Patent Application Laid-Open No. 2015-61152 (released on March 30, 2015)"

By the way, when the electronic device and another electronic device are performing wired communication, the noise generated from the USB cable may cause problems such as a decrease in communication speed and communication disconnection of wireless communication performed between the electronic device and the wireless device. Can cause

One embodiment of the present invention prevents problems such as reduction in communication speed and communication disconnection of wireless communication performed between an electronic device and a wireless device even when the electronic device and another electronic device perform wired communication. The purpose is

In order to solve the above problems, an information processing apparatus according to an aspect of the present invention performs wired communication with another electronic device via a USB cable, and performs wireless communication with a wireless device in a predetermined radio frequency band. An information processing apparatus provided in an electronic device to be performed, the determination unit determining whether or not the electronic device and the another electronic device are performing wired communication conforming to a predetermined USB standard; And a switching unit configured to switch the predetermined radio frequency band to another radio frequency band at least with reference to the determination result.

Further, in order to solve the above problems, a control method of an information processing apparatus according to an aspect of the present invention performs wired communication with another electronic device via a USB cable, and a predetermined wireless frequency with a wireless device. A control method of an information processing apparatus provided in an electronic device performing wireless communication in a band, wherein it is determined whether or not the electronic device and the other electronic device are performing wired communication conforming to a predetermined USB standard. And a switching step of switching the predetermined radio frequency band to another radio frequency band with reference to at least the judgment result of the judgment step.

According to the information processing apparatus according to the aspect of the present invention, even when the electronic device and another electronic device are performing wired communication, the communication speed of wireless communication performed between the electronic device and the wireless device is reduced The effect of preventing problems such as communication disconnection can be achieved. In addition, the control method of the information processing apparatus according to an aspect of the present invention can achieve the same effect.

It is a functional block diagram showing composition of an important section of a smart phone concerning Embodiment 1. It is a figure which shows an example of the flow of the process which controls the smart phone of FIG. It is a functional block diagram which shows the structure of the principal part of the smart phone which concerns on Embodiment 2. FIG. It is a figure which shows an example of the flow of the process which sets the threshold value used for control of the smart phone of FIG. It is a figure which shows an example of the flow of the process which controls the smart phone of FIG.

Embodiment 1
Hereinafter, Embodiment 1 of the present invention will be described using FIGS. 1 and 2. FIG. FIG. 1 is a functional block diagram showing the configuration of the main part of the smartphone 1 (electronic device) of the first embodiment. The smartphone 1 can be connected to an external HDD (another electronic device) 50 by a USB cable 60, and can charge a battery by USB power feeding. Hereinafter, connection by the USB cable 60 is also referred to as USB connection.

In the first embodiment, the smartphone 1 is exemplified as an example of the electronic device. In the first embodiment, a mode is described in which it is assumed that the smartphone 1 downloads data from the Internet 40 via the wireless LAN router 30 and stores the data in the external HDD 50 via the USB cable 60.

However, the above-described example is merely an example, and the electronic device is not limited to the smartphone 1. The electronic device may be any electronic device capable of USB connection with the external HDD 50, and may be, for example, a feature phone, a tablet PC (Personal Computer) or a notebook PC.

The external HDD 50 may be any other electronic device capable of USB power feeding to the electronic device, and may be, for example, a notebook PC connected to a power supply (not shown).

The wireless LAN router 30 may be any other wireless device capable of performing wireless communication with the electronic device in a predetermined wireless frequency band and another wireless frequency band.

[Smartphone 1]
The smartphone 1 includes a control unit 10 (information processing apparatus), a USB port 52, and a wireless communication unit 20.

[USB port 52]
The USB port 52 is a connection portion of the USB cable 60 in the smartphone 1. Similarly, the USB port 51 is a connection portion of the USB cable 60 in the external HDD 50. Therefore, the smartphone 1 and the external HDD 50 can be connected by the USB cable 60 connected to the

USB ports

51 and 52.

As an example, in the first embodiment, the case where the USB cable 60 corresponds to the USB Type-C standard (hereinafter, also simply referred to as "USB Type-C") is mainly exemplified. The USB cable corresponding to the USB Type-C is also referred to as a USB Type-C cable.

Therefore, in the first embodiment, the case where the USB port 52 in the smartphone 1 and the USB port 51 in the external HDD 50 are also compatible with USB Type-C is mainly illustrated. Since the configurations of the USB cable 60 and the

USB ports

51 and 52 are known, detailed description of the configurations will be omitted.

The USB Type-C is a backward compatible USB standard, and supports the USB 2.0 standard, the USB 3.0 standard, the USB 3.1 standard, and the like. Therefore, for example, even when the external HDD 50 is a legacy device (device not compatible with USB Type-C), communication (USB communication) is performed between the smartphone 1 and the external HDD 50 via the USB cable 60. It is possible to do.

The above-mentioned USB communication speed (data communication speed) is called USB communication speed (or USB data transfer speed). The USB communication speed (USB data transfer speed) is an amount of data per unit time that can be transmitted by USB communication. The USB communication speed is an indicator of a memory bandwidth (USB communication memory bandwidth) used for processing of USB communication in the smartphone 1.

Here, the maximum value of the USB communication speed in the USB 3.0 standard is 5 Gbps (Giga bit per second), and the maximum value of the USB communication speed in the USB 3.1 standard is 10 Gbps. On the other hand, the maximum value of the USB communication speed in the USB 2.0 standard is 480 Mbps (Mega bps). Thus, the USB 3.0 standard and the USB 3.1 standard can realize a sufficiently high USB communication speed as compared with the USB 2.0 standard.

[Control unit 10]
The control unit 10 controls each part of the smartphone 1 in an integrated manner.

The control unit 10 includes a switching unit 11 and a determination unit 12. The function of the control unit 10 may be realized by executing a program stored in a ROM (not shown) and a RAM (not shown) by a central processing unit (CPU). The specific operation of the control unit 10 will be described later.

The ROM may include, for example, a known non-volatile memory such as a hard disk drive. The RAM may include, for example, a known volatile memory such as SRAM (Static RAM) or DRAM (Dynamic RAM). The ROM stores various programs executed by the control unit 10 and data used by the programs. The RAM temporarily stores data used by the program.

(Judgment unit 12)
The determination unit 12 determines whether or not the smartphone 1 and the external HDD 50 are performing wired communication conforming to a predetermined USB standard.

More specifically, the determination unit 12 determines that the USB port 51 of the external HDD 50 and the USB port 52 of the smartphone 1 conform to the USB 3.0 standard or the USB 3.1 standard (hereinafter referred to as the "USB 3. x standard"). It is determined whether or not compliant wired communication is performed.

As described above, in the above-described example, the determination unit 12 determines that the smartphone 1 and the external HDD 50 are USB3. It is determined whether wired communication conforming to the x standard is being performed. However, the present embodiment is not limited to this, and the determination unit 12 may determine, for example, whether or not the external HDD 50 and the smartphone 1 perform wired communication conforming to the USB 2.0 standard.

(Switching unit 11)
The switching unit 11 switches a predetermined radio frequency band used for a radio frequency band performing radio communication with the wireless LAN router (wireless device) 30 to another radio frequency band with reference to at least the determination result by the determination unit 12.

More specifically, in the switching unit 11, the determination unit 12 determines that the smartphone 1 and the external HDD 50 are USB3. If it is determined that wired communication conforming to the x standard is being performed, the 2.4 GHz band is switched to the 5 GHz band.

The smartphone 1 and the external HDD 50 are USB3. When wired communication conforming to the x standard is performed, noise is generated. The noise interferes with a predetermined radio frequency band, and there is a possibility that adverse effects such as a decrease in communication speed and communication disconnection may occur.

On the other hand, as described above, the switching unit 11 switches the 2.4 GHz band to the 5 GHz band. Thereby, the external HDD 50 and the smartphone 1 are USB3. Even when wired communication conforming to the x standard is performed, it is possible to prevent problems such as a decrease in the communication speed of wireless communication and a communication disconnection.

(Application Example 1 of Switching Unit 11)
The switching unit 11 determines whether or not to switch the predetermined radio frequency band by further referring to the radio wave conditions of the predetermined radio frequency band and another radio frequency band, in addition to the determination result by the determination section 12 described above. May be

For example, the determination unit 12 allows the smartphone 1 and the external HDD 50 to be USB3. It is assumed that it is determined that wired communication conforming to the x standard is being performed. In this case, the switching unit 11 sequentially checks the status of the radio wave received by the

antennas

21 and 22 of the wireless communication unit 20 from the wireless LAN router 30 using a monitor (not shown) or the like. Then, the switching unit 11 may determine whether to switch the 2.4 GHz band to the 5 GHz band by comparing the radio wave condition of the 2.4 GHz band and the radio wave condition of the 5 GHz band.

Depending on radio wave conditions in the 5 GHz band, even if radio waves in the 2.4 GHz band are switched to radio waves in the 5 GHz band, the wireless communication speed may not be increased.

On the other hand, as described above, the switching unit 11 compares the radio wave condition in the 2.4 GHz band with the radio wave condition in the 5 GHz band to determine whether to switch the 2.4 GHz band to the 5 GHz band.

For example, the switching unit 11 may determine whether to switch 2.4 GHz to the 5 GHz band by comparing the reception strength of the 2.4 GHz band radio wave with the reception strength of the 5 GHz band radio wave.

When the reception strength of the 5 GHz band radio wave is equal to or less than the reception strength of the 2.4 GHz band radio wave, the radio communication speed may not be increased even when switching to the 5 GHz band radio wave.

On the other hand, when the reception strength of the 5 GHz band radio wave is equal to or less than the reception strength of the 2.4 GHz band radio wave, the switching unit 11 does not switch the 2 or 4 GHz band to the 5 GHz band. You can leave it. The switching unit 11 can switch to the 5 GHz band when the reception strength of the 5 GHz band radio wave becomes higher than the reception strength of the 2.4 GHz band radio wave.

The radio wave condition of the radio frequency band to which the switching unit 11 refers is not limited to the reception intensity of radio waves of the radio frequency band. The switching unit 11 may switch the radio frequency band with reference to the status of the radio wave other than the reception intensity of the radio wave.

When the smartphone 1 and the wireless LAN router 30 are performing Wi-Fi (registered trademark) communication, the 5 GHz band includes wireless frequency bands such as W52 and W53 which can not be used outdoors. There are also radio frequency bands such as W56 that can be used outdoors, but can not be used when radio waves are detected by a weather radar or the like in radio communication.

As described above, in addition to the radio wave reception intensity, there is a 5 GHz band which can not be used due to the difference between indoors and outdoors, and the use condition of the surrounding radar. Therefore, when the wireless communication unit 20 of the smartphone 1 and the wireless LAN router 30 perform communication indoors, the switching unit 11 may switch from the 2.4 GHz band to the 5 GHz band. In addition, when the wireless communication unit 20 does not detect a radar wave, the switching unit 11 may switch the 2.4 GHz band to the 5 GHz band.

As described above, the switching unit 11 may switch from the 2.4 GHz band to the 5 GHz band only when the radio wave condition in the 5 GHz band is better than the radio wave condition in the 2.4 GHz band. Thus, wireless communication can be performed in a more preferable wireless frequency band.

When the wireless communication speed of the 5 GHz band is slower than the 2.4 GHz band, the switching unit 11 uses the terminal instead of comparing the radio wave conditions of the 2.4 GHz band and the 5 GHz band to select the radio frequency band. Depending on the conditions, it may be determined whether to switch the radio frequency band. The terminal use condition is selected by the operating application.

As the terminal use condition, for example, the following two cases can be mentioned.

First, the case where the smartphone 1 performs streaming reproduction while maintaining a constant communication speed between the wireless communication unit 20 of the smartphone 1 and the wireless LAN router 30 will be described. In this case, the switching unit 11 selects a 2.4 GHz band radio frequency band, and performs wired communication between the smartphone 1 and the external HDD 50 as USB 3. Switch from wired communication conforming to the x standard to wired communication conforming to the USB 2.0 standard. That is, the switching unit 11 gives priority to the wireless communication speed, and selects to sacrifice the USB communication speed.

Next, the case where the amount of communication by the wireless LAN router 30 is small and large capacity transfer is performed between the USB port 51 of the external HDD and the USB port 52 of the smartphone 1 will be described. In this case, the switching unit 11 selects the 5 Gz band radio frequency band. That is, the switching unit 11 gives priority to the USB communication speed, and selects to sacrifice the wireless communication speed.

(Application example 2 of the switching unit 11)
In the above-described example, the switching unit 11 switches from the 2.4 GHz band to the 5 GHz band, but this embodiment is not limited to this. In the present embodiment, the switching unit 11 can switch from an arbitrary radio frequency band to another arbitrary radio frequency band.

For example, in the 5 GHz band, it is assumed that the communication speed of wireless communication performed between the wireless LAN router 30 and the smartphone 1 is equal to or less than the communication speed in the 2.4 GHz band. In this case, the switching unit 11 may switch from the 5 GHz band to the 2.4 GHz band.

More specifically, the switching unit 11 may perform the following operation. The switching unit 11 first measures and stores the wireless communication speed in the 2.4 GHz band. Subsequently, after switching to the 5 GHz band, the switching unit 11 measures the wireless communication speed in the 5 GHz band and compares it with the wireless communication speed in the 2.4 GHz band. When the switching unit 11 determines that the wireless communication speed in the 5 GHz band is slower than the wireless communication speed in the 2.4 GHz band, the switching unit 11 may return the 5 GHz band to the 2.4 GHz band.

Thus, the smartphone 1 and the wireless LAN router 30 can perform wireless communication in a more preferable wireless frequency band.

(Application example 3 of the switching unit 11)
In the above-described example, the switching unit 11 switches the radio frequency band, but in the present embodiment, the switching unit 11 may further switch the USB standard in addition to the radio frequency band.

For example, it is assumed that the switching unit 11 determines not to switch the 2.4 GHz band to the 5 GHz band, or determines to switch the 5 GHz band to the 2.4 GHz band. In these cases, the switching unit 11 performs wired communication between the smartphone 1 and the external HDD 50 as USB 3. The wired communication conforming to the x standard may be switched to the wired communication conforming to the USB 2.0 standard.

Thus, even if the smartphone 1 performs wireless communication with the wireless LAN router 30 in the 2.4 GHz band, the switching unit 11 can perform wireless communication while maintaining a constant communication speed.

(Application example 4 of the switching unit 11)
The switching unit 11 may switch seamlessly when switching from the 2.4 GHz band to the 5 GHz band.

For example, it is assumed that the

antennas

21 and 22 of the wireless communication unit 20 and the

antennas

31 and 32 of the wireless LAN router 30 separately communicate with radio waves of 2.4 GHz band and radio waves of 5 GHz band. In this case, in the state where the antenna 21 and the antenna 31 communicate with radio waves in the 2.4 GHz band, the switching unit 11 sets the radio frequency band in which the antenna 22 and the antenna 32 communicate from the 2.4 GHz band. It may be switched to the 5 GHz band.

In order for the antenna 22 and the antenna 32 to communicate in the 5 GHz band, it is necessary to perform necessary procedures in advance using Dynamic Frequency Selection (DFS) or the like, during which the antenna 22 can not communicate with the antenna 32. However, as described above, since the antenna 21 and the antenna 31 can continuously communicate in the 2.4 GHz band, the wireless communication unit 20 and the wireless LAN router 30 do not enter the stop state. As a result, the smartphone 1 and the wireless LAN router 30 can perform stable wireless communication, and problems such as communication disconnection can be avoided.

[Wireless communication unit 20]
The wireless communication unit 20 communicates with the wireless LAN router 30, which performs wireless communication with the Internet 40, with a radio wave of a predetermined radio frequency band and a radio wave of another radio frequency band.

More specifically, the wireless communication unit 20 communicates with the

antennas

31 and 32 of the wireless LAN router 30 via the

antennas

21 and 22 with radio waves of 2.4 GHz band and radio waves of 5 GHz band.

Here, when the wireless communication unit 20 communicates with the wireless LAN router 30 at 2.4 GHz or 5 GHz, it is preferable that both of the

antennas

21 and 22 communicate in the same wireless frequency band. On the other hand, when the switching unit 11 switches the radio frequency band, it is preferable that the radio communication unit 20 operate the

antennas

21 and 22 completely independently by DBS (Dual Band Simultaneous) operation. That is, when the switching unit 11 switches the radio frequency band, it is preferable that the radio communication unit 20 communicate in the radio frequency band as it is with one antenna and communicate in the radio frequency band after switching with the other antenna. .

For example, while the antenna 21 of the wireless communication unit 20 communicates with the antenna 31 of the wireless LAN router 30 via radio waves of 2.4 GHz, the antenna 22 communicates with the antenna 32 of the wireless LAN router 30 via radio waves of 5 GHz. Is preferred.

As a result, as described above, in a state in which the antenna 21 of the wireless communication unit 20 communicates with the antenna 31 by radio waves in the 2.4 GHz band, the switching unit 11 seamlessly connects the 2.4 GHz band to the 5 GHz band. Can be switched to

[Control processing of control unit 10]
Control processing (control method) of the control unit 10 of the smartphone 1 according to the present embodiment will be described with reference to FIG. Drawing 2 is a flow chart which shows an example of a flow of control processing in smart phone 1 concerning this embodiment.

Step S101: The external HDD 50 and the smartphone 1 are USB3. When the x communication is started, the determination unit 12 in the control unit 10 of the smartphone 1 determines that the external HDD 50 and the smartphone 1 are USB3. It is determined that wired communication conforming to the x standard is being performed (determination step).

Step S102: The switching unit 11 in the control unit 10 checks which of the 2.4 GHz band and 5 GHz band the wireless communication is being performed between the smartphone 1 and the wireless LAN router 30.

When the switching unit 11 confirms that the smartphone 1 and the wireless LAN router 30 perform wireless communication in the 2.4 GHz band (Yes in step S102), the process proceeds to step S103. When the switching unit 11 confirms that the smartphone 1 and the wireless LAN router 30 do not perform wireless communication in the 2.4 GHz band and perform wireless communication in the 5 GHz band (No in step S102), the process proceeds to step S107. move on.

Step S103: If the smartphone 1 and the wireless LAN router 30 perform wireless communication in the 2.4 GHz band, can the switching unit 11 perform wireless communication between the smartphone 1 and the wireless LAN router 30 in the 5 GHz band? Check if it is not.

For example, when the wireless LAN router can not detect a radio wave of 5 GHz band, the switching unit 11 determines that wireless communication can not be performed in the 5 GHz band.

When the switching unit 11 determines that the smartphone 1 and the wireless LAN router 30 can perform wireless communication in the 5 GHz band (Yes in step S103), the process proceeds to step S104. When the switching unit 11 determines that the smartphone 1 and the wireless LAN router 30 can not perform wireless communication in the 5 GHz band (No in step S103), the process proceeds to step S109.

Step S104: If the switching unit 11 determines that the smartphone 1 and the wireless LAN router 30 can perform wireless communication in the 5 GHz band, the switching unit 11 changes the wireless frequency band from 2.4 GHz to 5 GHz. Switch (switching process).

Step S105: After switching from the 2.4 GHz band to the 5 GHz band, the switching unit 11 checks whether the communication speed of the wireless communication has increased. If the switching unit 11 confirms that the wireless communication speed has increased (Yes in step S105), the process proceeds to step S107. When the switching unit 11 confirms that the wireless communication speed is not high (No in step S105), the process proceeds to step S106.

Step S106: If the switching unit 11 determines that it is desirable to perform wireless communication in the 2.4 GHz band rather than the 5 GHz band (Yes in step S106), the process proceeds to step S108. If it is determined that the switching unit 11 desirably performs wireless communication in the 5 GHz band rather than the 2.4 GHz band, and performs wireless communication in the 2.4 GHz band (No in step S106), the process proceeds to step S107. .

The switching unit 11 determines whether it is desirable to perform wireless communication in the 2.4 GHz band rather than the 5 GHz band, for example, based on the above-described terminal use condition.

Step S107: The switching unit 11 determines not to switch the radio frequency band so that the smartphone 1 and the wireless LAN router 30 perform wireless communication in the 5 GHz band.

Step S108: If the switching unit 11 determines that the 2.4 GHz band is preferable to the 5 GHz band, the switching unit 11 returns the radio frequency band to the 2.4 GHz band.

In this case, the switching unit 11 performs wired communication between the smartphone 1 and the external HDD 50 as USB 3. The wired communication conforming to the x standard may be switched to the wired communication conforming to the USB 2.0 standard.

Step S109: The switching unit 11 determines not to switch the radio frequency band so that the smartphone 1 and the wireless LAN router 30 perform wireless communication in the 2.4 GHz band.

In this case, the switching unit 11 performs wired communication between the smartphone 1 and the external HDD 50 as in the case of USB 3. The wired communication conforming to the x standard may be switched to the wired communication conforming to the USB 2.0 standard.

After performing any one of steps S107 to S109, the control unit 10 including the switching unit 11 and the determination unit 12 ends the control processing.

Second Embodiment
The function of the switching unit in the control unit of the electronic device is not limited to the function of the switching unit 11 in the control unit 10 of the smartphone 2 according to the first embodiment. The function of the switching unit may have a further function as the switching unit 14 of the control unit 13 in the smartphone 2 according to the second embodiment.

The second embodiment will be described with reference to FIGS. 3 to 5. In addition, about the member which has the same function as the member demonstrated in Embodiment 1 for convenience of explanation, the same code | symbol is appended and the description is abbreviate | omitted.

[Smart phone 2]
FIG. 3 is a block diagram showing the main configuration of the smartphone 2 according to the present embodiment. As shown in FIG. 3, the smartphone 2 according to the present embodiment includes a control unit 13, a USB port 52, and a wireless communication unit 20.

[Control unit 13]
The control unit 13 includes a switching unit 14 instead of the switching unit 11. Except for this point, the control unit 13 has the same configuration as the control unit 10.

(Switching unit 14)
The smartphone 2 and the external HDD 50 are USB3. When the determination unit 12 of the control unit 13 determines that wired communication conforming to a predetermined standard such as the x standard is performed, the switching unit 14 switches the radio frequency band after the following determination is made.

The switching unit 14 compares a value obtained by subtracting a predetermined threshold value from the reception strength of radio waves in a predetermined radio frequency band with the reception strength of radio waves in another radio frequency band. Then, the switching unit 14 determines whether to switch the predetermined radio frequency band to another radio frequency band.

More specifically, the switching unit 14 compares the value obtained by subtracting the threshold C from the reception strength A of the 2.4 GHz band radio wave with the reception strength B of the 5 GHz band radio wave. Then, when the value obtained by subtracting the threshold C from the reception strength A of the 2.4 GHz band radio wave is smaller than the value of the reception strength B of the 5 GHz band radio wave, that is, when the relation of A−C <B is satisfied. , And the switching unit 14 switches to the 5 GHz band.

Here, in (the application example 1 of the switching unit 11) of the first embodiment, the switching unit 11 compares the reception intensity A of the 2.4 GHz band radio wave with the reception intensity B of the 5 GHz band radio wave. When the relationship of A <B is satisfied, the switching unit 11 switches from the 2.4 GHz band to the 5 GHz band. On the other hand, the switching unit 14 of the control unit 13 in the smartphone 2 according to the present embodiment is USB3. When wired communication conforming to a predetermined standard such as the x standard is started, the conditions for switching to the 5 GHz band are relaxed.

Thus, the switching unit 14 can easily switch to the 5 GHz band as compared with the switching performed in (the application example 1 of the switching unit 11). By thus facilitating switching to the 5 GHz band, the switching unit 14 can more quickly compare the communication speeds of the 2.4 GHz band and the 5 GHz band, and switch to a more preferable radio frequency band.

In the switching unit 14, the wireless communication unit 20 of the smartphone 2 and the wireless LAN router 30 perform wireless communication in the 5 GHz band, and when satisfying the relationship of ACBB, the 5 GHz band to 2.4 GHz You may switch to the band.

Further, the switching unit 14 may switch the radio frequency band with further reference to the status of radio waves other than the reception intensity of radio waves in (the application example 1 of the switching unit 11) of the first embodiment.

The switching unit 14 connects the smartphone 2 and the external HDD 50 to USB 3. Even if wired communication conforming to a predetermined standard such as the x standard is completed, the threshold C is kept provided when the USB cable 60 is connected. Further, when detecting that the USB cable 60 connected between the USB port 51 and the USB port 52 has been removed, the switching unit 14 releases the threshold C.

[Control processing of control unit 13]
Control processing (control method) of the control unit 13 of the smartphone 2 according to the present embodiment will be described with reference to FIGS. 4 and 5.

Drawing 4 is a flow chart which shows an example of the flow of processing which sets up threshold C used for control of control part 13 of smart phone 2 concerning this embodiment. FIG. 5 is a flowchart showing an example of the flow of processing for controlling the control unit 13 of the smartphone 2.

[Processing for setting threshold C]
First, the flow of the process of setting the threshold C will be described with reference to FIG.

Step S201: The external HDD 50 and the smartphone 2 are USB3. When x communication is started, the determination unit 12 in the control unit 13 determines that the external HDD 50 and the smartphone 2 are USB3. It is determined that wired communication conforming to the x standard is being performed (determination step).

Step S202: The switching unit 14 in the control unit 13 sets a threshold C when determining the reception intensity of the radio wave received by the

antennas

21 and 22 of the wireless communication unit 20.

More specifically, the switching unit 14 sets a threshold C, which is a predetermined value to be subtracted from the reception intensity A of the 2.4 GHz band radio wave, to compare with the reception intensity B of the 5 GHz band radio wave.

Step S203: If the switching unit 14 detects that the USB cable 60 has been removed (Yes in Step S203), the process proceeds to Step S204. When the switching unit 14 does not detect that the USB cable 60 has been removed (No in step S203), the switching unit 14 returns to step S203, and maintains the state in which the threshold C is provided.

Step S204: When detecting that the USB cable 60 has been removed, the switching unit 14 releases the threshold C when determining the reception intensity of the radio wave received by the

antennas

21 and 22 of the wireless communication unit 20.

More specifically, the switching unit 14 cancels the threshold C, which is a predetermined value to be subtracted from the reception intensity A of the 2.4 GHz band radio wave, to compare with the reception intensity B of the 5 GHz band radio wave.

After step S204, the switching unit 14 ends the process of setting the threshold C.

[One Example of Control Process of Controller 13]
Next, an example of the flow of control processing of the control unit 13 will be described with reference to FIG.

It is assumed that the

antennas

21 and 22 of the wireless communication unit 20 in the smartphone 2 receive a radio wave of 2.4 GHz band and a radio wave of 5 GHz band from the wireless LAN router 30, and the switching unit 14 acquires data of the radio wave.

In this case, the switching unit 14 in the control unit 13 executes the following steps S211 to S213.

Step S211: The switching unit 14 acquires the reception strength A of the 2.4 GHz band radio wave and the reception strength B of the 5 GHz band radio wave.

Step S212: The switching unit 14 compares the value obtained by subtracting the threshold C from the reception strength A of the 2.4 GHz band radio wave with the value of the reception strength B of the 5 GHz band radio wave. Then, the switching unit 14 confirms whether the relationship of A−C <B is satisfied.

If the relationship of A−C <B is satisfied (Yes in step S212), the switching unit 14 proceeds to step S213. If the relationship of A−C <B is not satisfied, that is, if the relationship of A−C ≧ B is satisfied (No in step S212), the switching unit 14 proceeds to step S214.

Step S213: When the wireless communication unit 20 of the smartphone 2 and the wireless LAN router 30 perform wireless communication in the 2.4 GHz band, the switching unit 14 determines whether to switch to the 5 GHz band.

Specifically, the switching unit 14 receives the reception intensity A of the 2.4 GHz band radio wave and the reception intensity B of the 5 GHz band radio wave in steps S102 to S109 in [Control processing of the control unit 10] of the first embodiment. Perform processing other than comparing with.

Step S214: When the relationship of A−C <B is not satisfied, that is, when the relationship of A−C 切替 B is satisfied, the switching unit 14 adds the wireless communication unit 20 of the smartphone 2 and the wireless LAN router 30 to each other. Make wireless communication in 4 GHz band.

For example, in the case where the wireless communication unit 20 of the smartphone 2 and the wireless LAN router 30 perform wireless communication in the 2.4 GHz band, the switching unit 14 performs 2.4 GHz on the wireless communication unit 20 and the wireless LAN router 30. Make wireless communication with the band. When the wireless communication unit 20 of the smartphone 2 and the wireless LAN router 30 perform wireless communication in the 5 GHz band, the switching unit 14 switches from the 5 GHz band to the 2.4 GHz band (switching step).

After performing step S213 or step S214, the control unit 13 including the switching unit 14 and the determination unit 12 ends the control processing.

Third Embodiment
The control blocks of the smartphones 1 and 2 (in particular, the switching

units

11 and 14 and the determination unit 12 in the control units 10 and 13) may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like And may be realized by software using a CPU (Central Processing Unit).

In the latter case, the smartphones 1 and 2 are a CPU that executes instructions of a program that is software that realizes each function, and a ROM (Read Only Memory) in which the program and various data are readably recorded by a computer (or CPU). Alternatively, a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for developing the program, and the like are provided. Then, the object of the present invention is achieved by the computer (or CPU) reading and executing the program from the recording medium. As the recording medium, “a non-temporary tangible medium”, for example, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit or the like can be used. The program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. Note that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Summary]
The information processing apparatus (control unit 10) according to aspect 1 of the present invention performs wired communication with another electronic device (external HDD 50) via a USB (Universal Serial Bus) cable (60), and a wireless device ( An information processing apparatus provided in an electronic device (smartphone 1) performing wireless communication with a wireless LAN router 30) in a predetermined wireless frequency band, wherein the electronic device and the other electronic device conform to a predetermined USB standard A determination unit (12) that determines whether or not wired communication is performed, and a switching unit (11) that switches the predetermined radio frequency band to another radio frequency band with reference to at least the determination result by the determination unit And.

According to the above configuration, even when the electronic device and another electronic device are performing wired communication conforming to the predetermined USB standard, the communication speed of wireless communication performed between the electronic device and the wireless device is reduced, and It is possible to prevent problems such as communication disconnection.

In the information processing apparatus according to aspect 2 of the present invention, in the aspect 1, the electronic device transmits radio waves of the predetermined radio frequency band from the radio device and the radio frequency band of the other radio frequency band via the wireless communication unit. A radio wave is received, and the electronic device receives a radio wave of the predetermined radio frequency band and a radio wave of the other radio frequency band from the radio device via the wireless communication unit, and the switching unit The radio wave status of the predetermined radio frequency band may be compared with the radio wave status of the other radio frequency band to determine whether to switch the predetermined radio frequency band to another radio frequency band.

According to the above configuration, wireless communication can be performed in a more preferable wireless frequency band.

In the information processing device according to aspect 3 of the present invention, in the above aspect 2, the switching unit compares the reception strength of radio waves of the predetermined radio frequency band with the reception strength of radio waves of the other radio frequency band. It may be determined whether to switch the predetermined radio frequency band to another radio frequency band.

In the information processing apparatus (the control unit 13) according to the fourth aspect of the present invention, in the third aspect, the switching section (14) performs wired communication in which the electronic device and the another electronic device conform to a predetermined USB standard. When the determination unit determines that the above is performed, a value obtained by subtracting a predetermined threshold value from the reception intensity of the radio wave of the predetermined radio frequency band, and the reception intensity of the radio wave of the other radio frequency band By comparison, it may be determined whether to switch the predetermined radio frequency band to the other radio frequency band.

According to the above configuration, when the electronic device and another electronic device are performing wired communication conforming to the predetermined USB standard, it is possible to easily switch the predetermined radio frequency band to another radio frequency band. By thus facilitating switching from a predetermined radio frequency band to another radio frequency band, the switching unit compares the communication speeds of the 2.4 GHz band and the 5 GHz band more quickly, and switches to a more suitable radio frequency band. be able to.

In the information processing apparatus according to aspect 5 of the present invention, in any one of the aspects 1 to 4, the switching unit is performed between the wireless device and the electronic device in the another radio frequency band. When the communication speed of the wireless communication is equal to or less than the communication speed in the predetermined radio frequency band, the other radio frequency band may be switched to the predetermined radio frequency band.

According to the above configuration, for example, even if the communication speed of the wireless communication is not improved by switching from the predetermined radio frequency band to another radio frequency band, another radio frequency band is again set to the predetermined radio frequency band. It can be switched. Accordingly, the electronic device and the wireless device can perform wireless communication in a more preferable wireless frequency band.

In the information processing apparatus according to the sixth aspect of the present invention, in any one of the first to fifth aspects, the switching unit determines not to switch the predetermined radio frequency band to the other radio frequency band. Alternatively, when switching from the another radio frequency band to the predetermined radio frequency band, the wire communication between the electronic device and the another electronic device may be made from the wire communication conforming to the predetermined USB standard. It may be switched to wired communication conforming to the USB standard.

According to the above configuration, even when the electronic device performs wireless communication with the wireless device in a predetermined wireless frequency band, the electronic device can perform wireless communication with the wireless device while maintaining a constant communication speed.

In the information processing apparatus according to aspect 7 of the present invention, in any one of the above aspects 1 to 6, the electronic device is connected from the wireless device to the predetermined radio frequency band via the wireless communication unit (20). The radio wave and the radio wave of the other radio frequency band are separately received, and the switching unit maintains the state where the radio communication unit receives the radio wave of the predetermined radio frequency band from the radio device, The predetermined radio frequency band may be switched to another radio frequency band.

According to the above configuration, it is possible to switch the predetermined radio frequency band to another radio frequency band while maintaining the state in which the radio communication unit receives radio waves of the predetermined radio frequency band from the radio device. That is, it is possible to switch seamlessly from a predetermined radio frequency band to another radio frequency band. Thereby, stable wireless communication can be performed. This makes it possible to avoid problems such as communication disconnection.

The electronic device (smartphone 1) according to aspect 8 of the present invention may include the information processing apparatus according to any one of the above aspects 1 to 7.

The electronic device can preferably include the information processing device. Thus, the electronic device can achieve the same effect as the information processing device.

A control method of an information processing apparatus according to a ninth aspect of the present invention performs wired communication with another electronic device via a USB (Universal Serial Bus) cable, and performs wireless communication with a wireless device in a predetermined radio frequency band. A control method of an information processing apparatus provided in an electronic device, comprising: a determination step of determining whether the electronic device and the another electronic device are performing wired communication conforming to a predetermined USB standard; Switching the predetermined radio frequency band to another radio frequency band at least with reference to the determination result of the process.

According to the above configuration, the same effects as the information processing device according to one aspect of the present invention are obtained.

The information processing apparatus according to each aspect of the present invention may be realized by a computer. In this case, the computer is operated as each unit (software element) included in the information processing apparatus, and the information processing apparatus is operated by the computer. A control program of an information processing apparatus to be realized and a computer readable recording medium recording the same also fall within the scope of the present invention.

[Items to be added]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

1, 2 Smartphones (Electronics)
10, 13

control unit

11, 14 switching unit 12 determination unit 20

wireless communication unit

21, 22 antenna 30 wireless LAN router (wireless device)
31, 32 antenna 40 Internet 50 external HDD (another electronic device)
51, 52 USB port 60 USB cable

Claims

An information processing apparatus provided in an electronic device that performs wired communication with another electronic device via a USB (Universal Serial Bus) cable and performs wireless communication with a wireless device in a predetermined radio frequency band,
A determination unit that determines whether the electronic device and the another electronic device are performing wired communication in accordance with a predetermined USB standard;
An information processing apparatus comprising: a switching unit configured to switch the predetermined radio frequency band to another radio frequency band at least with reference to the determination result of the determination unit.
The electronic device receives radio waves of the predetermined radio frequency band and radio waves of the other radio frequency band from the radio device via the wireless communication unit,
The switching unit compares the radio wave condition of the predetermined radio frequency band with the radio wave condition of the other radio frequency band, and determines whether to switch the predetermined radio frequency band to another radio frequency band. The information processing apparatus according to claim 1, further comprising:
Whether the switching unit switches the predetermined radio frequency band to another radio frequency band by comparing the reception strength of radio waves of the predetermined radio frequency band with the reception strength of radio waves of the other radio frequency band The information processing apparatus according to claim 2, wherein it is determined whether or not it is determined.
When the determination unit determines that the switching unit is performing wired communication in which the electronic device and the other electronic device are in compliance with a predetermined USB standard, the reception strength of the radio wave in the predetermined radio frequency band Comparing the value obtained by subtracting a predetermined threshold value from the above and the reception strength of radio waves of the other radio frequency band, and determining whether or not to switch the predetermined radio frequency band to the other radio frequency band The information processing apparatus according to claim 3, characterized in that:
When the communication speed of the wireless communication performed between the wireless device and the electronic device in the another wireless frequency band is equal to or less than the communication speed in the predetermined wireless frequency band in the another wireless frequency band, the switching unit The information processing apparatus according to any one of claims 1 to 4, wherein a radio frequency band is switched to the predetermined radio frequency band.
The switching unit is
When it is decided not to switch the predetermined radio frequency band to the other radio frequency band, or
When switching from the other radio frequency band to the predetermined radio frequency band,
The wired communication between the electronic device and the another electronic device is switched from wired communication conforming to the predetermined USB standard to wired communication conforming to another USB standard. An information processing apparatus according to any one of the preceding items.
The electronic device separately receives the radio wave of the predetermined radio frequency band and the radio wave of the other radio frequency band from the radio device via the radio communication unit,
The switching unit switches the predetermined radio frequency band to another radio frequency band while maintaining the state in which the radio communication unit receives radio waves of the predetermined radio frequency band from the radio device. The information processing apparatus according to any one of claims 1 to 6.
An electronic apparatus comprising the information processing apparatus according to any one of claims 1 to 7.
A control method of an information processing apparatus provided in an electronic device that performs wired communication with another electronic device via a USB (Universal Serial Bus) cable and performs wireless communication with a wireless device in a predetermined radio frequency band,
A determination step of determining whether the electronic device and the other electronic device are performing wired communication conforming to a predetermined USB standard;
A control step of switching the predetermined radio frequency band to another radio frequency band at least with reference to the judgment result of the judgment step.
A control program for causing a computer to function as the information processing apparatus according to any one of claims 1 to 7, wherein the control program causes the computer to function as the determination unit and the switching unit.