JP2012053648A - Multifunctional device and method for controlling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multifunctional device that can provide a plurality of functions for an external device, and to improve the convenience of the multifunctional device.SOLUTION: A USB multifunctional device 10 includes a storage unit 16 and a radio communication unit 17, and can provide a storage function and a radio communication function for a personal computer PC. These functions can be switched by operating a switch 14. When the switch 14 is switched to a state that the radio communication function is turned on, a switching unit 15 feeds power to the storage unit 16 and the radio communication unit 17 to allow the storage unit 16 and the radio communication unit 17 to operate. When the switch 14 is switched to a state that the radio communication function is turned off, the switching unit 15 feeds power only to the storage unit 16 to allow the storage unit 16 to operate.

Description

  The present invention relates to a multi-function device that can provide a plurality of functions to an external device by being mounted on an external device, for example, a computer, and a control method for the multi-function device.

  A memory module having a wireless communication function for storing image data captured by a digital camera and transmitting the stored image data to a data server or the like in an environment capable of wireless communication is known (for example, Patent Documents 1 and 2).

  Further, as an external storage that can be attached to a computer, for example, a personal computer, a so-called USB memory conforming to the universal serial bus (USB) standard is known, and further, as a wireless slave device that can be attached to a personal computer, A USB wireless slave device that can be connected to a USB terminal is also known.

JP 2004-235891 A JP 2001-143032 A

  However, the USB memory and the USB wireless slave unit both provide only a single function to the personal computer. A memory module having a wireless communication function is premised on being used as a memory by being mounted on a digital camera, and is used for providing a plurality of additional functions to a computer such as a personal computer. Nothing was taken into account.

  The present invention has been made to solve at least a part of the above problems, and provides a multi-function device capable of providing a plurality of functions to an external device, and improves the convenience of the multi-function device. With the goal.

  In order to solve at least a part of the above problems, the present invention adopts the following various aspects.

  The first aspect provides a multi-function device that is used by being attached to an external device. A multi-function device according to a first aspect includes a wireless communication execution unit for providing a wireless communication function to the external device, a storage unit for providing a storage function to the external device, and the storage A switching unit capable of selectively operating only the unit.

  The multi-function device according to the first aspect includes a storage unit and a wireless communication execution unit, and has a configuration capable of selectively operating only the storage unit. A multi-function device capable of providing functions can be provided, and the convenience of the multi-function device can be improved.

  The multi-function device according to the first aspect further includes a physical external switch for enabling selection of only the storage unit, and the switching unit is configured so that only the storage unit is operated according to an operation of the external switch. May be selectively operated. In this case, only the storage unit can be selectively operated according to the operation of the external switch, so that the convenience of the multi-function device can be improved.

  The multi-function device according to the first aspect further includes a providing function notification unit that notifies a function that can be provided to the external device among a plurality of functions that can be provided by the multi-function device. When the storage unit is selected as a function to be provided to the external device by the switch, the unit notifies the external device that the function of the storage unit can be provided. Also good. In this case, it is possible to notify the external device that the multi-function device functions as a storage unit.

  The multi-function device according to the first aspect further includes a determination unit that determines whether a device driver for wireless communication is installed in the external device, and the determination unit is connected to the external device for the wireless communication. If it is determined that the device driver is installed, the switching unit is requested to selectively operate only the storage unit, and the switching unit responds to the request by the storage unit. Only these may be selectively operated. In this case, the multi-function device can selectively operate only the storage unit based on determination of whether or not a device driver for wireless communication is installed in the external device.

  The multi-function device according to the first aspect further includes a providing function notification unit that notifies a function that can be provided to the external device among a plurality of functions that can be provided by the multi-function device. When the determination unit determines that the device driver for wireless communication is installed in the external device, the unit notifies the external device that the storage function can be provided. You may do it. In this case, the multi-function device notifies the external device that the multi-function device functions as a storage unit based on a determination as to whether a device driver for wireless communication is installed in the external device. Can do.

  In the multi-function device according to the first aspect, when the determination unit determines that the device driver for wireless communication is not installed in the external device, the wireless communication unit And the switching unit operates the wireless communication unit and the storage unit in response to the request, and the providing function notification unit is configured to perform the wireless communication device by the determination unit. If the device driver is determined not to be installed in the external device, the external device may be notified that the wireless communication function and the storage function can be provided. In this case, the multi-function device can operate the storage unit and the wireless communication function based on the determination whether or not the device driver for wireless communication is installed in the external device. It can be notified that the multi-function device functions as a storage unit and a wireless communication execution unit.

  In the multi-function device according to the first aspect, when the determination unit further determines that the wireless communication driver installed in the external device is a device driver corresponding to the wireless communication execution unit. Requests the switching unit to operate the wireless communication unit and the storage unit, and the switching unit operates the wireless communication unit and the storage unit in response to the request, and provides the provided function notification. When the determination unit determines that the wireless communication driver installed in the external device is a device driver corresponding to the wireless communication execution unit, It may be notified that the wireless communication function and the storage function can be provided. In this case, even if a device driver for wireless communication is installed in the external device, the multi-function device can store the storage unit and the wireless device when the device driver corresponding to the wireless communication execution unit is installed. The communication function can be operated and the external device can be notified that the multi-function device functions as a storage unit and a wireless communication execution unit. Therefore, the usability of the multi-function device can be improved. .

  In the multi-function device according to the first aspect, when the determination unit cannot determine whether or not a device driver for wireless communication is installed in the external device, the determination unit operates the wireless communication unit and the storage unit. The switching unit operates the wireless communication unit and the storage unit in response to the request, the providing function notification unit is installed in the determination unit, and a device driver for wireless communication is installed in the external device. If it cannot be determined whether the wireless communication function is available, the external device may be notified that the wireless communication function and the storage function can be provided. In this case, since all functions that can be provided by the multi-function device can be provided, the usability of the multi-function device can be improved.

  The multi-function device according to the first aspect further includes a confirmation unit that receives a confirmation input of execution of the notification from the external device prior to the notification to the external device by the provision function notification unit, and the provision function notification The unit may execute the notification to the external device when the confirmation unit receives a confirmation input to execute the notification. In this case, the functions that can be executed by the multi-function device can be determined after confirmation by the user.

  In the multi-function device according to the first aspect, the provided function notification unit may transmit a device driver corresponding to the provided function to the external device in addition to the notification of the provided function. good. In this case, a device driver necessary for controlling the multi-function device can be provided to the external device.

  The multi-function device according to the first aspect is further stored in the storage unit with respect to an external server device that stores backup information as backup data of the storage unit information when the wireless communication unit is operated. An information synchronization request unit that requests execution of synchronization processing between the storage unit information and the backup information may be provided. In this case, the information stored in the multi-function device can be matched with the information stored in the external server.

  In the multi-function device according to the first aspect, the storage unit may include a removable storage medium and a mounting unit for mounting the storage medium. In this case, since a removable storage medium can be used, convenience for the user can be improved.

  A second aspect is a multi-function device that is used by being mounted on an external device, and includes a wireless communication execution unit for providing a wireless communication function to the external device, and a storage function for the external device. A control method of a multi-function device including a storage unit for providing is provided. The second correspondence is to determine whether or not a device driver for wireless communication corresponding to the wireless communication execution unit is installed in the external device, and a device driver corresponding to the wireless communication execution unit is installed in the external device. If it is determined that it is not installed, only the storage unit is selectively operated.

  The control method of the multi-function device according to the second aspect can obtain the same advantages as those of the multi-function device according to the first aspect. The control method of the multi-function device according to the second aspect can be realized in various aspects in the same manner as the multi-function device according to the first aspect. Furthermore, the control method of the multi-function device according to the second aspect of the present invention can also be realized as a control program and a computer-readable medium such as a CD, DVD, or HDD on which the control program is recorded.

It is explanatory drawing which shows schematic structure of the system containing the multifunctional apparatus which concerns on each Example. It is explanatory drawing which shows an example of an internal schematic structure of the multifunction apparatus which concerns on a 1st Example. It is explanatory drawing which shows an example of an internal schematic structure of the control part of the multifunction apparatus which concerns on a 1st Example. It is explanatory drawing which shows an example of the module, table, and information which are stored in the multifunction apparatus which concerns on a 1st Example. It is explanatory drawing which shows an example of the content stored in the table used in a 1st Example. It is explanatory drawing which shows an example of the more detailed internal structure of the multifunction apparatus which concerns on a 1st Example. It is a flowchart which shows the process routine at the time of the connection performed by the multifunction apparatus which concerns on a 1st Example. It is explanatory drawing which shows an example of an internal schematic structure of the multifunction apparatus which concerns on a 2nd Example. It is explanatory drawing which shows an example of the module and information which are stored in the multi-function apparatus which concerns on a 2nd Example. It is a flowchart which shows the process routine at the time of the connection performed by the multifunction apparatus which concerns on a 2nd Example. It is explanatory drawing which shows an example of the display screen which inquires execution of the notification which can be performed in each Example. It is explanatory drawing which shows the other structure of a multi-function apparatus. It is a flowchart which shows the process routine at the time of the connection performed by the multifunction apparatus which concerns on the other aspect of a 2nd Example.

System configuration:
FIG. 1 is an explanatory diagram showing a schematic configuration of a system including a multi-function device according to each embodiment. The system including the multi-function device according to the present embodiment is a system that is commonly used in the following embodiments, and includes a personal computer PC and a wireless access point 30 as external devices to which the multi-function devices 10 and 10a are attached. A network NE and a server 35. The multi-function devices 10 and 10a according to the present embodiment include a connection terminal conforming to a USB (Universal Serial Bus) system, which includes a wireless communication function as a wireless slave unit and a storage function as a large-capacity storage unit. USB multi-function device 10, 10a. When connected to the personal computer PC, the USB multi-function device 10, 10a can provide a large-capacity storage function and a wireless communication function to the personal computer PC.

  The personal computer PC includes a central processing unit (CPU) 21 and a hard disk drive (HDD) 22 as a large-capacity storage, as well as volatile and nonvolatile semiconductor storage units such as a random access memory and a read-only memory (not shown), I / O interface is provided. A keyboard and mouse (pointing device) as the display device 25 and the input device 26 are connected to the personal computer PC. The HDD 22 is installed with device drivers for operating external devices mounted on the personal computer PC, such as a display device 25, an input device 26, a network board, and a graphic board. In the personal computer PC, the driver for the external device is installed in the HDD 22 by the CPU 21. Further, the CPU 21 of the personal computer PC executes plug-and-play processing, which will be described later, when the USB multi-function device 10, 10a is connected to the personal computer PC.

  The wireless access point 30 is connected to the server 35 by a route P1 through the network NE or a direct route P2 without going through the network. The wireless access point 30 functions as a wireless master device of the USB multi-function device 10 that functions as a wireless slave device terminal, and transmits data received from the USB multi-function devices 10 and 10a via wireless communication to the server 35. Alternatively, the wireless relay device transmits data received from the server 35 via wireless communication to the USB multi-function device 10. The wireless access point 30 and the server 35 may be connected by an Ethernet cable, for example, a wired connection according to the TCP / IP protocol or a wireless line, for example, by a wireless connection based on the IEEE 802.11 standard.

  The server 35 includes a central processing unit (not shown) and a hard disk drive (HDD) 351 as a large-capacity storage, as well as volatile and nonvolatile semiconductor storage units such as a random access memory and a read-only memory (not shown), and an input / output interface. It has. The server 35 is provided with a synchronization processing execution function (synchronization processing execution program) for executing synchronization processing between data stored in the USB multi-function device 10 or 10a and data stored in the HDD 351. (Installed). According to the synchronization processing execution function, it is determined whether the data stored in the USB multi-function device 10 and the corresponding data stored in the HDD 351 are newer, and the old data is updated with the new data. For example, when the data stored in the USB multi-function device 10 is new data, the corresponding data stored in the HDD 351 is updated with the data stored in the USB multi-function device 10, 10a. As an update mode, either overwriting to replace old data with new data or a mode of sequentially storing difference data between old data and new data may be executed.

First embodiment:
Configuration of the USB multi-function device according to the first embodiment:
FIG. 2 is an explanatory diagram illustrating an example of an internal schematic configuration of the multi-function device according to the first embodiment. FIG. 3 is an explanatory diagram illustrating an example of an internal schematic configuration of the control unit of the multi-function device according to the first embodiment. FIG. 4 is an explanatory diagram illustrating an example of modules, tables, and information stored in the multi-function device according to the first embodiment. FIG. 5 is an explanatory diagram showing an example of contents stored in a table used in the first embodiment. The USB multi-function device 10 according to the first embodiment includes a connection terminal 11, a USB input / output interface (I / F) 12, a control unit 13, a switch 14, a switching unit 15, a storage unit 16, and a wireless communication unit 17. ing.

  The connection terminal 11 has a shape conforming to the USB standard, and has an A terminal (plug) shape that is connected to a USB A terminal (socket) included in a device such as a personal computer PC. The USB input / output interface (USB I / F) 12 is between a communication method (signal transmission method) with an external device based on the USB standard and a communication method (signal transmission method) used inside the USB multi-function device 10. Execute signal conversion processing.

  The control unit 13 controls each unit of the USB multi-function device 10 to provide a desired function to an external device such as a personal computer PC to which the USB multi-function device 10 is mounted. To control the operation. As shown in FIG. 3, the control unit 13 includes a central processing unit (CPU) 131, a read only memory (ROM) 132, a random access memory (RAM) 133, and an input / output interface (I / F) 134. The CPU 131, the ROM 132, the RAM 133, and the I / F 134 are connected via an internal bus 135 so that they can communicate with each other. The CPU 131 expands the program and software module stored in the ROM 132 on the RAM 133 and executes the program and software module. The RAM 133 is a volatile memory that provides a work area for the CPU 131. The ROM 132 is a non-volatile memory, and as shown in FIG. 4, a provided function notification module M1, an information synchronization request module M2 executed by the CPU 131, a switching table T1 for associating on / off of the switch 14 and the operation of the switching unit 15; Descriptor information DI is stored. The I / F 134 mediates exchange of signals between the USB I / F 12 and each module (switching unit or the like) and the components of the control unit 13.

  The provided function notification module M1 is executed by the CPU 131 to notify the personal computer PC of functions that can be provided by the USB multi-function device 10 when connected to the personal computer PC. Function as. This notification is a notification necessary for realizing the plug-and-play function in the so-called USB standard, and the USB device (USB multi-function device 10) generally notifies the USB host (for example, personal computer PC). It is executed by notifying information called a device descriptor. More specifically, it is executed by transmitting information representing the characteristic (type) of the USB device called an interface descriptor. If an ordinary USB device has a single function, there is only one interface descriptor prepared in advance. Further, even if the USB device has multiple functions, it is not provided by switching functions, so the interface descriptor to be notified by the provided function is determined in advance. On the other hand, since the USB multi-function device 10 according to the present embodiment can selectively provide (switch) a plurality of functions, the interface descriptor corresponding to the functions that can be provided is selectively notified. The Upon receiving this notification, the personal computer PC can search and install a device driver for implementing the function. In this embodiment, an operation for incorporating a function into the personal computer PC is called “installation”, and an operation for incorporating a program for implementing a function into the personal computer PC is called “installation”.

  The provided function notification module M1 in the present embodiment stores a memory as an interface descriptor when the USB multi-function device 10 should function as a storage device (should provide a storage function) by operating the switch 14. An interface class code indicating the device (flash memory) is notified to the personal computer PC. On the other hand, the provided function notification module M1 is configured so that the USB multifunction device 10 should function as a wireless communication device and a storage device (provide a wireless communication function and a storage function) by operating the switch 14. As an interface descriptor, an interface class code indicating a storage device and a communication device (wireless communication terminal) is notified to the personal computer PC.

  The provided function notification module M1 in this embodiment may further transmit a device driver corresponding to the function to be notified to the personal computer PC. The device driver is stored in the storage unit 16, for example.

  The information synchronization request module M2 is executed by the CPU 131 to search for an external server 35 (see FIG. 1) storing data to be synchronized with the data in the storage unit 16, and to the searched external server Thus, the synchronization processing between the data stored in the storage unit 16 and the data stored in the HDD 351 of the external server 35 is requested. That is, the information synchronization request module M2 functions as an information synchronization request unit by being executed by the CPU 131. The search for the external server 35 can be executed by, for example, setting an IP address of an external server that should request synchronization processing in advance and transmitting the synchronization processing request to the IP address. When the external server 35 having the IP address does not exist on the network, a response from the external server 35 cannot be obtained, and the information synchronization request module M2 cannot search the external server 35. obtain. On the other hand, when the external server 35 having the IP address exists on the network, the information synchronization request module M2 transfers the data in the storage unit 16 to the external in response to a response or request from the external server 35. The data is transmitted to the server 35 (when the data in the storage unit 16 is new), or the data received from the external server 35 is written into the storage unit 16 (when the data in the storage unit 16 is old).

  As described above, a plurality of interface descriptors corresponding to the functions provided by the USB multi-function device 10 are prepared in the descriptor information DI. As for the interface descriptor, a plurality of combinations (groups) corresponding to combinations of functions that can be provided by the USB multi-function device 10 may be prepared in one configuration descriptor in advance, or for a plurality of configuration descriptors. One interface descriptor is prepared for each, and when the notification is made to the personal computer PC, the configuration descriptor may be appropriately combined and notified by the control unit 13.

  As illustrated in FIG. 5, the switching table T <b> 1 stores the on / off state of the switch 14 and the provided function in association with each other. In the example of FIG. 5, when the switch 14 is turned off, only the memory function is turned on (a state that can be provided), and when the switch 14 is turned on, the memory function and the wireless communication function are turned on. It is said. That is, in the example of FIG. 5, it can be said that the switch 14 is a wireless communication function on / off switch.

  A detailed configuration of the storage unit 16 and the wireless communication unit 17 and a switching operation in the USB multi-function device will be described with reference to FIG. FIG. 6 is an explanatory diagram illustrating an example of a more detailed internal configuration of the multi-function device according to the first embodiment. The storage unit 16 of the USB multi-function device 10 according to the first embodiment is also called a storage module, and includes a memory controller 161 and a storage element 162. The memory controller 161 is a circuit that controls reading and writing of data with respect to the storage element 162, writes data received from the control unit 13 to the storage element 162, or receives data requested from the control unit 13 from the storage element 162. Read and transmit to the control unit 13. The memory element 162 is a semiconductor memory element, and for example, a flash memory is used.

  The wireless communication unit 17 is also called a wireless communication module, and includes a communication controller 171 and a wireless communication interface (I / F) 172. In response to a request from the control unit 13, the communication controller 171 performs signal processing for transmitting and receiving packet data by wireless communication in order to perform wireless communication with the wireless access point 30 (see FIG. 1). Part. The wireless communication interface 172 is an RF circuit including a transmission circuit for transmitting a wireless signal to the wireless access point 30, a receiving circuit for receiving a wireless signal from the wireless access point 30, an antenna 173, and the like. As a wireless communication method, for example, a wireless communication method compliant with IEEE 802.11 is adopted.

  The USB multi-function device 10 and a personal computer PC as a host are connected via a USB I / F 12 and a USB interface on the personal computer PC side. The USB multi-function device 10 exchanges data signals with the personal computer PC via the data signal line DL. The USB multi-function device 10 is supplied with power from the personal computer PC via the power supply line PL.

  The switch 14 is an external switch that can be physically turned on and off by the user. In the present embodiment, the switch 14 is used to switch between turning on and off the wireless communication function. The switching unit 15 is a logical switching circuit that switches between energization and interruption of power to the storage unit 16 and the wireless communication unit 17 in accordance with a control signal input according to the on / off state of the switch 14. The switching unit 15 switches the storage unit 16 and the wireless communication unit 17 to a non-operating state by cutting off (off) power supply to the storage unit 16 and the wireless communication unit 17 (each functional module). By supplying power to the communication unit 17 (ON), the storage unit 16 and the wireless communication unit 17 are switched to an operating state. In other words, in this embodiment, each functional module is switched to a state where it is operated (enabled) or not operated (disabled) depending on whether or not power is supplied.

Operation of USB Multi-Function Device According to First Embodiment FIG. 7 is a flowchart showing a connection time processing routine executed by the multi-function device according to the first embodiment. This processing routine is started in the USB multi-function device 10 when the USB multi-function device 10 is attached to the personal computer PC. The CPU 131 of the control unit 13 determines whether or not the wireless function is turned on (whether or not it is enabled) (step S100). Specifically, the CPU 131 and the switching unit 15 determine whether or not a control signal indicating wireless communication ON is input as to whether or not the switch 14 is switched to the wireless function ON state.

  When it is determined that the wireless function is not turned on (step S100: No), the switching unit 15 turns on the storage unit 16 (step S102), and the CPU 131 can provide the storage function by executing the provided function notification module M1. A notification to this effect is sent to the personal computer PC (step S104). Specifically, the switching unit 15 supplies power only to the storage unit 16 based on the switching table T1, and enables the storage unit 16 to operate. The CPU 131 transmits an interface descriptor indicating that a function that can be provided is a storage function to the personal computer PC. As a result, in the personal computer PC, the USB multi-function device 10 is recognized as, for example, a mass storage device, and the driver for wireless communication is not automatically installed by the plug and play function. As a result, the configuration of the personal computer PC is not changed to an unintended configuration.

  The notification of the functions that can be provided by the provided function notification module M1 is executed with a request from the personal computer PC, which is a USB host that executes plug-and-play processing, as a trigger. A simple plug and play procedure will be described below. When the personal computer PC detects the mounting of the USB multi-function device 10, the personal computer PC transmits a Reset request to the USB multi-function device 10 after waiting for a predetermined time. The standby for a predetermined time is executed to wait for a period during which power is supplied from the personal computer PC to the USB multi-function device 10.

  The USB multi-function device 10 that has received the Reset request is reset to a default state in which control transfer using the address (0) and the pipe (0) that is a logical communication path can be received. After transmitting the Reset request, the personal computer PC transmits a device descriptor transmission request (Get_Descriptor (device)) to the USB multi-function device 10, and the USB multi-function device 10 transmits a standard device descriptor to the personal computer PC. Reply. After this transmission processing is performed again, the personal computer PC transmits a new address setting request (Set_Address) to the USB multi-function device 10, and the USB multi-function device 10 sets a new address and sets a new address. Communication using a unique address is possible.

  The personal computer PC sends a detailed device descriptor transmission request (Get_Descriptor (configuration)) to the USB multi-function device 10, and the USB multi-function device 10 sends a device descriptor including an interface descriptor to the personal computer PC. Send back. In this embodiment, an interface descriptor according to the function selected by the switch 14 is returned to the personal computer PC as the interface descriptor. That is, in this embodiment, the interface descriptor is changed as appropriate according to the functions that can be provided. The personal computer PC searches for a necessary driver based on the interface class code included in the received interface descriptor, and executes a driver installation process if it is not installed. If the necessary driver is already installed, the installed driver is functioned. As described above, by matching the interface class code included in the interface descriptor with the provided function, it is possible to control whether or not the non-installed driver is executed by the personal computer PC. Therefore, unnecessary driver installation can be avoided.

  The personal computer PC that has received the device descriptor including the interface descriptor transmits Set_Configuration instructing operation setting with the content of the received device descriptor to the USB multi-function device 10. The USB multi-function device 10 that has received the Set_Configuration completes the setting to operate with the contents of the transmitted device descriptor. Thereafter, data communication is started between the personal computer PC and the USB multi-function device 10. The personal computer PC recognizes the USB multi-function device 10 as an external device that provides the device operation instructing the setting.

  The CPU 131 executes the provided function notification module M1, transmits the device driver for the storage unit 16 to the personal computer PC, and ends this processing routine (step S106). Specifically, the CPU 131 acquires the driver stored in the storage unit 16 and transmits it to the personal computer PC via the USB I / F 12. Since the general-purpose driver for the mass storage device is often incorporated in the personal computer PC in advance, the process in step S106 may be executed when a driver transmission request is received from the personal computer PC. Alternatively, it may not be executed.

  If it is determined in step S100 that the wireless function is turned on (step S100: Yes), the switching unit 15 turns on both the storage unit 16 and the wireless communication unit 17 (step S108), and the CPU 131 notifies the provided function. The module M1 is executed to notify the personal computer PC that both the storage function and the wireless communication function can be provided (step S110). Specifically, the switching unit 15 supplies power to both the storage unit 16 and the wireless communication unit 17 based on the switching table T1, and enables both the storage unit 16 and the wireless communication unit 17 to operate. The CPU 131 transmits an interface descriptor indicating that functions that can be provided are a storage function and a wireless communication function to the personal computer PC. As a result, in the personal computer PC, the USB multi-function device 10 is recognized as, for example, a mass storage device and a communication device, and a driver for storage and wireless communication is installed as necessary by the plug and play function. Installed automatically.

  The CPU 131 executes the provided function notification module M1 and transmits device drivers for the storage unit 16 and the wireless communication unit 17 to the personal computer PC (step S112). Specifically, the CPU 131 acquires storage unit and wireless communication unit drivers stored in the storage unit 16 and transmits them to the personal computer PC via the USB I / F 12. Note that the processing in step S112 may be executed when a driver transmission request is received from the personal computer PC, or may not be executed. If not executed, the drivers of the storage unit 16 and the wireless communication unit 17 may be transmitted to the personal computer PC at a different timing in response to a request for an installation program that is activated by a user operation as a trigger. In the personal computer PC that has received the driver, for example, the installation program is automatically started, and the received driver is installed, and the storage unit 16 and the wireless communication unit 17 are used as external devices from the personal computer PC, respectively. It becomes possible.

  The CPU 131 executes the information synchronization request module M2 and connects to the network via the wireless communication unit 17 (step S114), and an external server 35 (hereinafter also referred to as a synchronization target server: see FIG. 1). ) Is searched (step S116). Specifically, the USB multi-function device 10 is connected to the wireless access point 30 by the wireless communication unit 17 and transmits a synchronization processing request to a preset IP address of a synchronization target server.

  When the CPU 131 receives a response from the synchronization target server 35 (step S116), the CPU 131 executes a synchronization process with the synchronization target server in accordance with the response from the synchronization target server 35 (step S118), and ends this processing routine. The synchronization process executed by the CPU 131 is, for example, sending data to be synchronized in the storage unit 16 to the synchronization target server in response to a request from the synchronization target server 35, and the synchronization target server 35 in the synchronization target server 35. This includes updating the data to be synchronized in the storage unit 16 with the update data received from the synchronization target server 35 based on the comparison result between the synchronization target data stored in the HDD 351 and the received data. When the data to be synchronized in the storage unit 16 is newer than the data to be synchronized in the HDD 351, the USB multi-function device 10 does not execute the update process of the data to be synchronized in the storage unit 16. .

  In step S116, if the CPU 131 cannot receive a response from the synchronization target server 35 within a predetermined time (step S116: No), the synchronization processing request addressed to the IP address of the synchronization target server is performed a predetermined number of times. And waiting for a response from the synchronization target server 35 are repeated, and when the predetermined number of times is exceeded, this processing routine is terminated. This is because the failure of the synchronization processing request due to the communication environment is taken into account, and the synchronization target server 35 is disconnected from the network and the synchronization target server 35 is turned off.

  According to the USB multi-function device 10 according to the first embodiment, the USB multi-function device 10 can be caused to function only as a storage device by operating the switch 14. Accordingly, the USB multi-function device 10 functions only as a storage device, such as when a driver for wireless communication is already installed in the personal computer PC or when the personal computer PC is in an environment where it cannot be connected to the wireless network. It is possible to meet the needs of users who want to make it happen. In the former case, it is possible to prevent a problem that an undesired driver is installed and the execution environment of the personal computer PC is changed. In the latter case, a driver for an unusable wireless communication function is unnecessary. The installation process can be avoided. Therefore, according to the USB multi-function device 10, the problems of the multi-function device can be solved and the convenience of the multi-function device can be improved.

  According to the USB multi-function device 10 according to the first embodiment, when the wireless communication function is provided, the USB multi-function device 10 automatically requests the synchronization target server 35 to start data synchronization processing. Is done. Therefore, when the data stored in the synchronization target server 35 is the latest data, the data stored in the USB multi-function device 10 is updated to the latest data and stored in the USB multi-function device 10. If the stored data is the latest data, the data stored in the synchronization target server 35 is updated to the latest data. Therefore, the user can always make the data stored in the USB multi-function device 10 and the synchronization target server 35 the latest data without performing any special operation.

  Since the USB multi-function device 10 can provide a plurality of functions including a storage function and a wireless communication function, it is possible to provide a plurality of functions via one USB port, thereby reducing port resource strain. can do.

Second embodiment:
Configuration of the USB multi-function device according to the second embodiment:
FIG. 8 is an explanatory diagram showing an example of an internal schematic configuration of the multi-function device according to the second embodiment. FIG. 9 is an explanatory diagram illustrating an example of modules and information stored in the multi-function device according to the second embodiment. The USB multi-function device 10a according to the second embodiment does not include the physical switch 14, and the provided function is switched by software by the control unit 13 according to the state of the personal computer PC that is the connection destination. It has features. However, the configuration of the USB multi-function device 10a according to the second embodiment includes the same configuration as the configuration of the USB multi-function device 10 according to the first embodiment. The description of the elements is omitted by giving the same reference numerals as those used in the USB multi-function device 10 according to the first embodiment.

  The USB multi-function device 10 a includes a connection terminal 11, a USB input / output interface (I / F) 12, a control unit 13 a, a switching unit 15 a, a storage unit 16, and a wireless communication unit 17.

  The control unit 13a controls each unit of the USB multi-function device 10a to provide a desired function to an external device such as a personal computer PC to which the USB multi-function device 10a is mounted, and the USB multi-function device 10a. To control the operation. Similarly to the control unit 13 included in the USB multi-function device 10 according to the first embodiment, the control unit 13a includes a central processing unit (CPU) 131, a read only memory (ROM) 132a, a random access memory (RAM) 133, and An input / output interface (I / F) 134 is provided. The CPU 131, the ROM 132a, the RAM 133, and the I / F 134 are connected via an internal bus 135 so that they can communicate with each other. The CPU 131 expands the program and software module stored in the ROM 132a on the RAM 133, and executes the program and software module. The RAM 133 is a volatile memory that provides a work area for the CPU 131. The ROM 132a is a non-volatile memory, and stores a provided function notification module M1, an information synchronization request module M2, a determination module M3, and descriptor information DI executed by the CPU 131, as shown in FIG. The I / F 134 mediates exchange of signals between the USB I / F 12 and each module (switching unit or the like) and the components of the control unit 13.

  The determination module M3 is executed by the CPU 131 to determine whether a wireless communication driver is installed in the personal computer PC which is an external device, and further, a wireless communication unit provided in the USB multi-function device 10a. It functions as a determination unit that determines whether or not a 17 driver is installed. The installation status of the driver in the personal computer PC can be acquired by the determination module M3, for example, by inquiring a device manager provided by the operating system.

  If the determination module M3 further determines that a wireless communication driver is installed in the personal computer PC, the determination module M3 transmits a switching signal for operating only the storage unit 16 to the switching unit 15a. When it is determined that the wireless communication driver is not installed in the network, a switching signal for operating both the storage unit 16 and the wireless communication unit 17 is transmitted to the switching unit 15a. The determination module M3 further determines whether or not a wireless communication driver for the wireless communication unit 17 of the USB multi-function device 10a is installed in the personal computer PC, and for the wireless communication unit 17 of the USB multi-function device 10a. When it is determined that the wireless communication driver is installed, a switching signal for operating both the storage unit 16 and the wireless communication unit 17 may be transmitted to the switching unit 15a. In this case, the wireless communication driver installed in the personal computer PC is a driver for the USB multi-function device 10a, and a new driver is not installed, and the setting environment of the personal computer PC is changed. It is possible to use the wireless communication function without doing so. Further, when the wireless communication function is not provided to the user of the USB multi-function device 10a, usability is reduced.

  If the determination module M3 cannot determine whether or not the wireless communication driver is installed in the personal computer PC, the determination module M3 causes the switching unit 15a to operate both the storage unit 16 and the wireless communication unit 17. A switching signal may be transmitted. This is because providing all the functions that can be provided by the USB multi-function device 10a can improve the convenience of the user, and the user can stop installing an unnecessary wireless communication driver. .

  As described above, the switching unit 15a operates only the storage unit 16 or both the storage unit 16 and the wireless communication unit 17 in response to a request from the control unit 13a (CPU 131) that executes the determination module M3. Power is supplied only to the storage unit 16 or to the storage unit 16 and the wireless communication unit 17.

  In the USB multi-function device 10a according to the second embodiment, the provided function notification module M1 can be provided to the personal computer PC when connected to the personal computer PC according to the determination result of the determination module M3. Notify the function. That is, the provided function notification module M1 can provide only the storage function to the personal computer PC when the determination module M3 determines that the driver for wireless communication is installed in the personal computer PC. Notify that there is. The provided function notification module M1 installs the wireless communication driver corresponding to the USB multi-function device 10a even if the determination module M3 determines that the wireless communication driver is installed in the personal computer PC. If it is determined that the storage function and the wireless communication function can be provided, the personal computer PC may be notified. When the determination module M3 determines that the wireless communication driver is not installed in the personal computer PC, the provided function notification module M1 provides both the storage function and the wireless communication function to the personal computer PC. Notify that it can be provided.

  If the determination module M3 cannot determine whether the wireless communication driver is installed in the personal computer PC, the provided function notification module M1 provides both the storage function and the wireless communication function to the personal computer PC. You may notify that it can provide.

  The descriptor information DI stored in the ROM 132a is as described for the USB multi-function device 10 according to the first embodiment.

Operation of USB Multifunction Device According to Second Embodiment FIG. 10 is a flowchart showing a connection time processing routine executed by the multifunction device according to the second embodiment. The processing routine executed by the USB multi-function device 10a according to the second embodiment is any of the storage function, the storage function, and the wireless function by the USB multi-function device 10a regardless of the physical switch 14 switching operation. It is characterized in that it is determined whether or not to be provided. Of the steps in this processing routine, the same processing as that in the processing routine executed by the USB multi-function device 10 according to the first embodiment will be described briefly.

  This processing routine is started in the USB multi-function device 10a when the USB multi-function device 10a is attached to the personal computer PC. When the USB multi-function device 10a is attached to the personal computer PC, the USB multi-function device 10a is connected to the personal computer PC in order to complete the procedure for recognizing the device conforming to the USB standard. Notify that it is a device. However, at this point, the USB multi-function device 10a is merely executing a program for executing plug and play stored in the ROM 132a, and therefore the storage unit 16 and the wireless communication unit 17 are still operable. It is not in a state. When a general-purpose mass storage driver is not installed in the personal computer PC, a device mounting process by plug and play is executed between the USB multi-function device 10a and the personal computer PC. On the other hand, when the general-purpose mass storage driver is installed in the personal computer PC, no new driver is installed. After the USB multi-function device 10a and the personal computer PC are communicable, the CPU 131 of the control unit 13a executes the determination module M3 to execute functions (installed drivers) that are already installed in the personal computer PC. ) Is acquired from the device manager of the personal computer PC (step S200). Specifically, when the data exchange with the personal computer PC becomes possible, that is, when the logical communication becomes possible, the decision module M3 is activated by a known automatic activation program, Can be realized.

  The CPU 131 determines whether or not the wireless communication function is installed in the personal computer PC, that is, whether or not the wireless communication driver is installed based on the received information on the installed function (step S202). When the CPU 131 determines that the wireless function is not implemented in the personal computer PC (step S202: No), the CPU 131 proceeds to step S212. On the other hand, when the CPU 131 determines that the wireless function is implemented in the personal computer PC (step S202: Yes), the implemented wireless function is a function provided by the USB multi-function device 10a, that is, It is determined whether the driver of the USB multi-function device 10a is installed (step S204). When the CPU 131 determines that the implemented wireless function is a function provided by the USB multi-function device 10a (step S204: Yes), the CPU 131 proceeds to step S212. Steps S212 to S216 are processes for causing the USB multi-function device 10a to function as a storage unit and a wireless communication unit. If no wireless communication driver is installed in the USB multi-function device 10a, wireless communication is performed. Even if a driver for wireless communication is installed, the existing wireless communication environment in the personal computer PC is not changed, and even if a driver for wireless communication is installed, it corresponds to the USB multi-function device 10a. If a wireless communication driver is installed, the convenience of the user can be improved by functioning as a wireless communication unit.

  When the CPU 131 determines that the mounted wireless function is not a wireless function provided by the USB multi-function device 10a (step S204: No), the CPU 131 executes steps S206 to S210. Steps S206 to S210 are steps corresponding to steps S102 to S116 of FIG. 9 described with respect to the USB multi-function device 10a according to the first embodiment, and will be briefly described focusing on the differences. The determination module M3 being executed by the CPU 131 requests the switching unit 15a to turn on the storage unit 16, and the switching unit 15a turns on the storage unit 16 in response to the request (step S206). The CPU 131 notifies the personal computer PC that the storage function can be provided by executing the provided function notification module M1 (step S104). Specifically, the switching unit 15a supplies power only to the storage unit 16 in response to a request, and enables the storage unit 16 to operate. The provided function notification module M1 executed by the CPU 131 receives the determination result of the determination module M3 (step S202: Yes, step S204: No), and a function that can be provided to the personal computer PC is a storage function. Send an interface descriptor to indicate this. As a result, in the personal computer PC, the USB multi-function device 10a is recognized as a mass storage device, for example, and the driver for wireless communication is not automatically installed by the plug and play function. As a result, the configuration of the personal computer PC is not changed to an unintended configuration.

  The notification of the functions that can be provided by the provided function notification module M1 is executed using a request from the personal computer PC, which is a USB host that executes plug-and-play processing, as a trigger, and the detailed execution procedure is as described above. .

  The CPU 131 executes the provided function notification module M1, transmits the device driver for the storage unit 16 to the personal computer PC, and ends this processing routine (step S210). Since the general-purpose driver for the mass storage device is often incorporated in the personal computer PC in advance, the processing in step S210 may be executed when a driver transmission request is received from the personal computer PC. Alternatively, it may not be executed.

  Hereinafter, steps S212 to S216 will be described. These steps are steps corresponding to steps S108 to S112 of FIG. 9 described regarding the USB multi-function device 10a according to the first embodiment. This will be mainly described, and detailed description will be omitted. In step S212, the determination module M3 being executed by the CPU 131 requests the switching unit 15a to turn on both the storage unit 16 and the wireless communication unit 17, and the switching unit 15a includes the storage unit 16 and the wireless communication unit 17. Both are turned on (step S212). The CPU 131 executes the provided function notification module M1 to notify the personal computer PC that both the storage function and the wireless communication function can be provided (step S214). Specifically, the switching unit 15a supplies power to both the storage unit 16 and the wireless communication unit 17 in response to a request, and enables both the storage unit 16 and the wireless communication unit 17 to operate. The provided function notification module M1 executed by the CPU 131 receives the determination result of the determination module M3 (step S202: No, step S204: Yes), and the functions that can be provided to the personal computer PC are the storage function and the wireless function. An interface descriptor indicating the communication function is transmitted. As a result, in the personal computer PC, the USB multi-function device 10a is recognized as a mass storage device and a communication device, for example, and a driver for storage and wireless communication is installed as necessary by the plug and play function. Installed automatically.

  The CPU 131 executes the provided function notification module M1 and transmits device drivers for the storage unit 16 and the wireless communication unit 17 to the personal computer PC (step S216). Note that the processing in step S216 may be executed when a driver transmission request is received from the personal computer PC, or may not be executed. If not executed, the drivers of the storage unit 16 and the wireless communication unit 17 may be transmitted to the personal computer PC at a different timing in response to a request for an installation program that is activated by a user operation as a trigger. In the personal computer PC that has received the driver, for example, the installation program is automatically started, and the received driver is installed, and the storage unit 16 and the wireless communication unit 17 are used as external devices from the personal computer PC, respectively. It becomes possible.

  Thereafter, the CPU 131 executes information synchronization processing in steps S218 to S222, and ends this processing routine. In addition, since it is a step corresponding to step S114-S118 of FIG. 9 demonstrated regarding the USB multi-function device 10a which concerns on 1st Example, description is abbreviate | omitted.

  According to the USB multi-function device 10a according to the second embodiment, the USB multi-function device 10a should function only as a storage device by the USB multi-function device 10a without the user operating the switch 14. It is possible to determine whether to function as a storage device and a wireless communication device. Therefore, by simply connecting the USB multi-function device 10a to the personal computer PC, when a wireless communication driver is already installed in the personal computer PC, a situation in which different wireless communication drivers are installed again is avoided. It becomes possible to prevent the problem that the execution environment of the personal computer PC changes. Further, even if a driver for wireless communication is installed in the personal computer PC, if the driver for the wireless communication unit 17 included in the USB multi-function device 10a is installed, the USB multi-function device 10a. Can be used not only as a storage device but also as a wireless communication device, the functions of the USB multi-function device 10a can be effectively utilized, and the convenience of the user can be improved. Therefore, according to the USB multi-function device 10a, the problems of the multi-function device can be solved and the convenience of the multi-function device can be improved.

  According to the USB multi-function device 10a according to the second embodiment, other effects obtained by the USB multi-function device 10 according to the first embodiment can be obtained.

Other examples:
(1) In the first embodiment, the switch 14 switches the functions that the USB multi-function device 10 can provide between the two embodiments of the storage function, the storage function, and the wireless communication function. A switch that can be switched as a function that can provide only a communication function may be used. That is, a switch that can be selected so that the USB multi-function device 10 can be used only as a wireless communication device may be used. For example, when different USB storage devices are used, by installing a plurality of USB storage devices, it is possible to avoid a situation where the data storage destination becomes plural and the usability of the USB storage device is lowered. In this case, the USB multi-function device 10 notifies the personal computer PC of the class code of the communication device as an interface descriptor.

(2) In each of the above-described embodiments, the notification to the personal computer PC is executed without inquiring the user when the USB multi-function device 10, 10a can provide the notification. However, as shown in FIG. A notification (display) 251 that prompts confirmation input may be performed, and the notification may be executed after waiting for confirmation input from the user. This process is realized by, for example, the CPU 131 or 131a executing a confirmation module stored in the ROM 132a. The confirmation module issues a notification for prompting confirmation and waits for confirmation input. When the confirmation input is received by the confirmation module, the provided function notification module M1 notifies the personal computer PC of the provided function. FIG. 11 is an explanatory diagram illustrating an example of a display screen for inquiring execution of executable notifications in the present embodiment. In this case, the function finally provided by the USB multi-function device 10, 10a can be determined by the user. That is, the personal computer PC does not determine whether the USB multi-function device 10, 10a operates as a storage device or a wireless communication device until a confirmation input by the user is input.

(3) In the above embodiment, the USB multi-function device has been described using the storage unit 16 in which the storage element is fixedly mounted as the storage unit. However, as shown in FIG. A storage unit 16a including a detachable memory socket 163 may be used. FIG. 12 is an explanatory diagram showing another configuration of the multi-function device according to each embodiment. When this configuration is provided, it is possible to replace the storage element. For example, the storage element (memory card) attached to the digital camera is attached, and data is transmitted to the synchronization target server 35 via the wireless communication unit 17. Can be transferred. Therefore, it is possible to expand the usage mode of the USB multi-function device 10, 10a, and the convenience for the user can be improved.

(4) In the second embodiment, after acquiring the functions mounted on the personal computer PC, various functions are mounted on the personal computer PC. First, after the storage function is executed, It may be determined whether to implement a wireless communication function. FIG. 13 is a flowchart showing a connection processing routine executed by the multi-function device according to another aspect of the second embodiment. In the flowchart shown in FIG. 13, when the USB multi-function device 10 a is connected to the personal computer PC, the CPU 131 requests the switching unit 15 a to turn on the storage unit 16, and the switching unit 15 a responds to the request by the storage unit 16. Is turned on (step 2001). The CPU 131 executes the provided function notification module M1 to notify the personal computer PC that the storage function can be provided (step S2002). The subsequent steps are the same as the steps described in FIG. 10, and the description is omitted by assigning the same step numbers.

  According to this aspect, by providing a frequently used storage function to the personal computer PC by default, the time until the USB multi-function device 10a becomes usable is shortened, and the usability of the USB multi-function device 10a is improved. Can be improved.

(5) In the second embodiment, the step of determining whether or not the driver installed in the personal computer PC is a driver corresponding to the USB multi-function device 10a may not be provided. That is, when the wireless communication driver is installed, the USB multi-function device 10a may provide only the storage function to the personal computer PC. In this case, by omitting the determination step, it is possible to shorten the time until the USB multi-function device 10a becomes usable after the USB multi-function device 10a is connected.

(6) In the second embodiment, when it is not possible to determine whether or not the wireless communication driver is installed in the personal computer PC, the USB multi-function device 10a has a storage function for the personal computer PC. Both wireless communication functions may be provided. In this case, the functions that can be provided by the USB multi-function device 10a can be provided to the maximum, and user convenience can be improved. Alternatively, if it is not possible to determine whether or not a wireless communication driver is installed in the personal computer PC, the USB multi-function device 10a may provide only a storage function to the personal computer PC. In this case, although the convenience of the user regarding the USB multi-function device 10a cannot be improved, there is an advantage in that the execution environment of the personal computer PC is not changed.

  As mentioned above, although this invention was demonstrated based on the Example and the modification, Embodiment mentioned above is for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the spirit and scope of the claims, and equivalents thereof are included in the present invention.

10, 10a ... USB multifunction device 11 ... Connection terminal 12 ... USB I / F
13 ... Control unit 13a ... Control unit 131 ... CPU
132, 132a ... ROM
133 ... RAM
134 ... I / F
DESCRIPTION OF SYMBOLS 135 ... Internal bus 14 ... Switch 15, 15a ... Switching part 16, 16a ... Memory | storage part 161 ... Memory controller 162 ... Memory element 163 ... Memory socket 164 ... Memory element 17 ... Wireless communication part 171 ... Communication controller 172 ... Wireless communication interface 173 ... Antenna PC ... Personal computer 21 ... CPU
22 ... HDD
25 ... Display device 251 ... Notification (display)
26 ... Input device 30 ... Wireless access point 35 ... Server (synchronization target server)
351 ... HDD
M1 ... Provided function notification module M2 ... Information synchronization request module M3 ... Judgment module T1 ... Switching table DI ... Descriptor information DL ... Data signal line PL ... Power supply line NE ... Network P1 ... Path P2 ... Path

Claims (13)

A multi-function device used by being attached to an external device,
A wireless communication execution unit for providing a wireless communication function to the external device;
A storage unit for providing a storage function to the external device;
A multifunction device comprising a switching unit capable of selectively operating only the storage unit. The multi-function device according to claim 1 further comprises:
A physical external switch for operating only the storage unit;
The switching unit is a multi-function device that selectively operates only the storage unit according to an operation of the external switch. The multifunction device according to claim 2 further includes:
A provision function notification unit for notifying a function that can be provided to the external device among a plurality of functions that the multifunction device can provide;
The providing function notifying unit can provide the function of the storage unit to the external device when the storage unit is selected as a function to be provided to the external device by the switch. To notify,
Multi-function device. The multi-function device according to claim 1 further comprises:
A determination unit that determines whether or not a device driver for wireless communication is installed in the external device;
The determination unit, when it is determined that the device driver for wireless communication is installed in the external device, requests the switching unit to selectively operate only the storage unit,
The switching unit selectively operates only the storage unit in response to the request.
Multi-function device. The multifunction device according to claim 4 further includes:
A provision function notification unit for notifying a function that can be provided to the external device among a plurality of functions that the multifunction device can provide;
The providing function notifying unit can provide the storage function to the external device when the determining unit determines that the device driver for wireless communication is installed in the external device. To notify you,
Multi-function device. The multi-function device according to claim 5,
If the determination unit determines that the device driver for wireless communication is not installed in the external device, the determination unit requests the switching unit to operate the wireless communication unit and the storage unit,
The switching unit operates the wireless communication unit and the storage unit in response to the request,
When the determining unit determines that the device driver of the device for wireless communication is not installed in the external device, the providing function notifying unit notifies the external device of the wireless communication function and Notifying that the storage function can be provided;
Multi-function device. The multi-function device according to claim 5,
In the case where the determination unit further determines that the wireless communication driver installed in the external device is a device driver corresponding to the wireless communication execution unit, the determination unit performs the wireless communication on the switching unit. Requesting the communication unit and the storage unit to operate,
The switching unit operates the wireless communication unit and the storage unit in response to the request,
The providing function notifying unit, when the determining unit determines that the wireless communication driver installed in the external device is a device driver corresponding to the wireless communication executing unit, Notifying the device that the wireless communication function and the storage function can be provided.
Multi-function device. The multi-function device according to claim 5,
If the determination unit cannot determine whether a device driver for wireless communication is installed in the external device, the determination unit requests the switching unit to operate the wireless communication unit and the storage unit,
The switching unit operates the wireless communication unit and the storage unit in response to the request,
When the determination unit cannot determine whether or not a device driver for wireless communication is installed in the external device, the providing function notification unit notifies the external device of the wireless communication function and the storage function. To be able to provide
Multi-function device. The multi-function device according to any one of claims 1 to 8, further comprising:
Prior to the notification to the external device by the providing function notification unit, a confirmation unit that receives a confirmation input of execution of the notification from the external device,
The providing function notification unit executes the notification to the external device when the confirmation input of the execution of the notification is received by the confirmation unit.
Multi-function device. In the multi-function device according to any one of claims 3 and 5 to 9,
The provided function notifying unit transmits a device driver corresponding to the available function to the external device in addition to the notification of the available function. The multi-function device according to any one of claims 1 to 10, further comprising:
When the wireless communication unit is operated, between the storage unit information stored in the storage unit and the backup information with respect to the external server device that stores backup information as backup data of the storage unit information A multi-function device comprising an information synchronization request unit that requests execution of synchronization processing in The multi-function device according to any one of claims 1 to 11,
The storage unit includes a removable storage medium and a mounting unit for mounting the storage medium.
Multi-function device. A multi-function device that is used by being mounted on an external device, a wireless communication execution unit for providing a wireless communication function to the external device, and a storage unit for providing a storage function to the external device A method of controlling a multi-function device comprising:
Determining whether a device driver for wireless communication corresponding to the wireless communication execution unit is installed in the external device;
When it is determined that a device driver corresponding to the wireless communication execution unit is not installed in the external device, only the storage unit is selectively operated.
Control method.

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