JP2014085898A - Information processing system, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processing system in which devices on the side of a portable information processor are shared, with no need to connect with a cable.SOLUTION: A USB emulator unit makes each of a camera 24, a tuner 30, and a reader writer function unit 27, which are being connected through a switching unit, look like a USB device. A conversion unit converts data in conformance with USB standards into packet data with network standards with respect to the USB emulator unit so that the USB emulator unit virtually functions as a local I/F (or a USB interface). For example, in cases where a smart phone 1 is connected to a PC 2 through a radio communication unit 29, a USB data structure (such as information on a USB mass storage class device) received from the USB emulator unit is converted into network packet data to be transmitted to the PC2.

Description

  The present invention relates to an information processing system and program including a portable information processing device, a client device, and a device.

  In recent years, portable information processing apparatuses such as smartphones are equipped with devices for attaching removable media and performing data communication with the removable media. In addition, various devices such as a camera and a tuner are mounted on the portable information processing apparatus. A portable information processing apparatus is equipped with a function of connecting a device to a personal computer (hereinafter referred to as a PC) when connected to a PC via a local interface such as a USB. For example, when a portable information processing apparatus is connected to a PC via USB, the portable information processing apparatus has a function of causing the PC to recognize a removable medium attached to the portable information processing apparatus as a USB mass storage device. (See Patent Document 1).

JP 2008-33619 A

  However, it is troublesome to connect the portable information processing apparatus and the PC each time with a USB cable.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an information processing system that shares a device on the portable information processing apparatus side without having to connect with a cable.

  An information processing system according to the present invention includes a portable information processing device, a client device connected to the portable information processing device, and a device connected to the portable information processing device.

  The portable information processing apparatus is, for example, a smartphone or a tablet PC. The client device is, for example, a PC. The device is a functional unit built in a smartphone or the like, for example, a reader / writer functional unit that attaches a removable medium and performs data communication with the removable medium.

  The portable information processing apparatus controls a communication between the first network interface connected to the client apparatus via a network, a device interface connected to the device, and communication between the client apparatus and the device interface. And a control unit.

  The client device includes a second network interface connected to the portable information processing device via a network, and a second control unit that controls communication with the portable information processing device.

  The first control unit connects the device to an internal system of the portable information processing apparatus, or the portable information processing apparatus connects to the client apparatus via the first network interface. If connected, the device interface data and the first network interface data are converted to relay communication between the device interface and the first network interface, and the second control unit Converts the data for the second network interface and the data for the device interface, relays communication with the device interface via the second network interface, and is connected to the information processing apparatus The device is virtually locally connected Pretend so.

  That is, the portable information processing apparatus connects the removable medium to an internal system or emulates the removable medium as a USB mass storage, and further converts data conforming to the USB standard into packet data of the network standard. Convert and send / receive to / from client device. The client device converts network standard packet data into data conforming to the USB standard. Thereby, the client device can use a device (for example, a removable medium) on the portable information processing apparatus side connected via the network as a USB device.

  In addition, the portable information processing apparatus includes a local interface that is directly connected to the client apparatus, and the first control unit is configured to connect the device interface when connected to the client apparatus via the local interface. It is also possible to convert the data for the local interface and the data for the local interface, relay communication between the device interface and the local interface, and connect the device locally to the client device.

  As described above, when connected to a PC via a local interface such as USB, a mode in which the PC on the portable information processing apparatus side recognizes the device as a USB device is also possible. Therefore, when the PC and the portable information processing apparatus are directly connected by USB as before, the portable information processing apparatus side device is connected to the PC as a USB device and is not connected by the local interface. Connect the device as a USB device via the network.

  In the information processing system of the present invention, the portable information processing apparatus includes a receiving unit that receives a switch operation, the first control unit is connected to the client apparatus via a first network interface, and When a switch operation is accepted, a connectable signal is transmitted to the client device, and when the connectable signal is received, the second control unit transmits a connection request, and the first control unit When the connection request is received, communication between the device interface and the first network interface may be relayed.

  In this case, when the user explicitly performs a connection operation (for example, displays a switch on the touch panel of the smartphone and accepts an ON operation of the switch) and receives a connection request from the PC side, the USB is transmitted via the network. Can be used as a device.

  When the portable information processing device is not connected to the client device, the assignment of each function unit as a device is canceled, and each function unit is connected to an internal system including the OS.

  The portable information processing device transmits a connection release request signal to the client device when a connection release operation is received using a touch panel or the like. When the client device receives the connection release request signal, the portable information processing device The logical connection with the portable information processing apparatus is released. Release of logical connection means release of network connection or release (unmount) communication with the portable information processing apparatus in a state of being physically connected with a USB cable.

  When the logical connection is released, the portable information processing device releases the assignment of each functional unit as a device and connects to the internal system.

  According to the present invention, it is possible to share a device on the portable information processing apparatus side without having to connect with a cable.

It is a figure which shows the structure of an information processing system. It is a block diagram which shows the structure of a smart phone and PC. It is a functional block diagram of a smart phone and PC. It is a flowchart which shows operation | movement of a smart phone. It is a flowchart which shows operation | movement of PC. It is a flowchart which shows operation | movement of a smart phone and PC.

  FIG. 1 is a diagram illustrating a configuration of an information processing system. The information processing system includes a smartphone 1 that is a portable information processing device and a PC 2 that is a client device. The smartphone 1 and the PC 2 can be connected to each other in either mode, such as wireless network connection as shown in FIG. 1 (A) and FIG. 1 (B) and wired local interface connection as shown in FIG. 1 (C). It is.

  The wireless network connection is performed by, for example, a wireless LAN or mobile communication, but a mode of connection by short-range wireless communication such as Bluetooth (registered trademark) is also possible. When connected via a wireless LAN, connection is possible even in an ad hoc mode not via an access point as shown in FIG. 1 (A), and an infrastructure mode via an access point 4 as shown in FIG. 1 (B). But it can be connected. The PC 2 and the access point 4 may be connected by a wired LAN.

  The local interface connection by wire is connected by a USB cable, for example.

  FIG. 2A is a block diagram illustrating a main configuration of the smartphone 1. The smartphone 1 includes a control unit 21, a display 22, a flash ROM 23, a camera 24, a touch panel 25, a local interface (I / F) 26 such as a USB, a reader / writer function unit 27, a RAM 28, a wireless communication unit 29, and a tuner 30. I have.

  The control unit 21 includes a CPU and the like, and develops programs such as an OS and applications stored in the flash ROM 23 in the RAM 28 as a work memory, and performs various operations. Thereby, operation | movement of the 1st control part in this invention is implement | achieved.

  The display 22 and the touch panel 25 display an operation screen such as an icon for the user and accepts the operation of the user.

  The wireless communication unit 29 corresponds to the first network interface of the present invention, and performs wireless communication with the access point and the PC 2 according to instructions from the control unit 21 to perform data transmission / reception.

  As shown in FIG. 1C, the local I / F 26 is an interface for connecting to another device (in this example, the PC 2), and performs data transmission / reception with the connected other device.

  The smartphone 1 is equipped with various functional units such as a removable medium attached to the camera 24, the tuner 30, or the reader / writer functional unit 27. The information processing system according to the present embodiment is configured to connect these functional units to the PC 2 via a network and virtually appear to be connected through a local interface such as a USB.

  The PC 2 includes a control unit 31, a display 32, an HDD 33, a user I / F 34, a local I / F 35 such as a USB, a RAM 36, and a wireless communication unit 37 (see FIG. 2B).

  The control unit 31 includes a CPU and the like, and develops programs such as an OS and applications stored in the HDD 33 in the RAM 36 as a work memory, and performs various operations. Thereby, the operation of the second control unit in the present invention is realized.

  The display 32 includes an LCD or the like, and displays an operation screen such as an icon for the user. The user I / F 34 includes a mouse, a keyboard, and the like, and accepts user operations.

  The wireless communication unit 37 corresponds to the second network interface of the present invention, and performs wireless communication with the access point 4 and the smartphone 1 according to instructions from the control unit 31 to perform data transmission / reception. Note that, as shown in FIG. 1B, when data transmission / reception is performed with the smartphone 1 via the access point 4, a wired communication unit may be provided instead of the wireless communication unit 37.

  As shown in FIG. 1C, the local I / F 35 is an interface for connecting to another device (the smartphone 1 in this example), and performs data transmission / reception with the connected other device.

  The detailed operation of the information processing system will be described below with reference to FIGS.

  FIG. 3A is a functional block diagram for realizing the information processing system of the present invention in the smartphone 1. FIG. 3B is a functional block diagram for realizing the information processing system of the present invention in the PC 2.

  The smartphone 1 functionally includes an internal system 41, a switching unit 42, a USB emulator unit 53, and a conversion unit 54. These functional units are realized by software processing of the control unit 21.

  The internal system 41 includes an OS and is a functional unit for realizing basic operations as the smartphone 1. For example, the internal system 41 inputs image data captured by the camera 24 and writes the image data to a removable medium attached to the reader / writer function unit 27. Also, the internal system 41 controls the tuner 30 to input TV video and audio and display the video on the display 22 or output the audio from a speaker (not shown).

  The switching unit 42 connects each functional unit of the camera 24, the tuner 30, and the reader / writer functional unit 27 to either the internal system 41 or the USB emulator unit 53, and functions as a device interface in the present invention. When the smartphone 1 is not connected to another device, the switching unit 42 connects the functional units of the camera 24, the tuner 30, and the reader / writer function unit 27 to the internal system 41, and the smartphone 1 is connected to the local I / F 26 or When connected to another device (PC2 in this example) via the wireless communication unit 29, the function units of the camera 24, the tuner 30, and the reader / writer function unit 27 are connected to the USB emulator unit 53. In addition, each function unit may be connected to either the internal system 41 or the USB emulator unit 53 by receiving an explicit operation of the user using the display device 22 and the touch panel 25.

  The USB emulator unit 53 is a functional unit that makes the functional units of the camera 24, the tuner 30, and the reader / writer functional unit 27 connected via the switching unit 42 appear as USB devices. For example, when the smartphone 1 is connected to the PC 2 via the local I / F 26, the USB emulator unit 53 transmits device information of the USB mass storage class to the PC 2 and is attached to the reader / writer function unit 27. Let the PC 2 recognize the removable media as a USB mass storage device.

  In this embodiment, the switching unit 42 connects each functional unit to either the internal system 41 or the USB emulator unit 53. However, the switching unit 42 connects only to the internal system 41 or the internal system 41 and the USB emulator. It is good also as an aspect connected to both of the parts 53. FIG. In this case, when the smartphone 1 is not connected to another device, the internal system 41 can use each function unit. On the other hand, when the smartphone 1 is connected to another device, each function unit is used as a USB device. It can be used also in the internal system 41 while being usable. For example, by transmitting the image data input from the camera 24 to the internal system side and the USB emulator side, the image data is displayed on the display unit of the smartphone 1 and the camera 24 of the smartphone 1 is recognized as a USB device. The image data can also be confirmed on the display unit of the apparatus.

  The conversion unit 54 converts data conforming to the USB standard into packet data of the network standard so as to virtually function as a local I / F (that is, a USB interface) for the USB emulator unit 53 and the internal system 41. . For example, when the smartphone 1 is connected to the PC 2 via the wireless communication unit 29, the USB data structure (for example, USB mass storage class device information) received from the USB emulator unit 53 is converted into network packet data. To the PC 2. On the PC 2 side, the received packet data is converted into a data structure for USB. Also, the packet data received from the PC 2 is converted into a USB data structure and transmitted to the USB emulator unit 53. As a result, the PC 2 connected via the network is made to recognize the removable medium attached to the reader / writer function unit 27 as a USB mass storage device.

  As shown in FIG. 3B, the PC 2 functionally includes an internal system 61, a USB driver 62, and a conversion unit 71. These functional units are realized by software processing of the control unit 31.

  The internal system 61 includes an OS and is a functional unit for realizing basic operations as the PC 2. For example, the internal system 61 transmits / receives data to / from a USB device connected to the local I / F 35 via the USB driver 62.

  When the smartphone 1 is connected via the local I / F 35, the internal system 61 transmits / receives data conforming to the USB standard to the smartphone 1 via the USB driver 62. For example, when a removable medium attached to the reader / writer function unit 27 is recognized as a USB mass storage device, data is read from and written to the removable medium.

  The conversion unit 71 converts data conforming to the USB standard into packet data of the network standard so as to virtually function as a local I / F (ie, USB I / F) for the internal system 61. For example, packet data received from the smartphone 1 is converted into a USB data structure and transmitted to the internal system 61 via the USB driver 62. Conversely, the USB data structure transmitted from the internal system 61 is converted into network packet data and transmitted to the smartphone 1. Thereby, the conversion unit 71 causes the internal system 61 to recognize the removable media attached to the reader / writer function unit 27 of the smartphone 1 connected via the network as a USB mass storage device.

  FIG. 4 is a flowchart showing the operation of the smartphone 1. First, the control unit 21 determines whether or not another device is connected to the local I / F 26, that is, as shown in FIG. 1C, whether or not the PC 2 is connected via USB (s11). . When the USB connection is established, the control unit 21 assigns each functional unit as a USB device using the USB emulator unit 53 (s21). Then, the control unit 21 relays the local I / F communication with each functional unit assigned as the USB device (s22). That is, the USB emulator unit 53 is used to convert the data for each function unit such as the camera 24, the tuner 30, the reader / writer function unit 27, and the data for USB, and assign each function unit assigned as a USB device; Relays local I / F communication.

  Thereby, when connected to the PC 2 via the USB, the PC 2 recognizes each functional unit on the smartphone 1 side as a USB device.

  On the other hand, when determining that the USB connection is not established, the control unit 21 determines whether or not another device is connected to the wireless communication unit 29, that is, as illustrated in FIGS. 1A and 1B. Then, it is determined whether or not another device, for example, the access point 4 is connected via the network (s12).

If no other device is connected via the network, the process returns to the determination process of s11.

  As shown in FIGS. 1A and 1B, when it is determined that another device is connected via the network, it is further determined whether or not a switch operation has been performed (s13). For example, the control unit 21 displays a switch icon on the display 22 when connected to another device via a network, and receives an operation of touching the switch icon on the touch panel 25, the switch operation is performed. Judge that it was made. When the switch operation is not performed, the process returns to the determination process of s11.

  When determining that the switch operation has been performed, the control unit 21 transmits a connectable signal including its own address information to other devices on the network using the broadcast communication via the wireless communication unit 29 ( S14). Thereafter, it waits until a connection request is received as a response to the connectable signal from the PC 2 (s15).

  The PC 2 may be configured to transmit a connection request signal to the smartphone 1 using broadcast communication. In this case, the smartphone 1 waits until a connection request is received without transmitting a connectable signal.

  When the connection request is received, each function unit is assigned as a USB device using the USB emulator unit 53 (s16). Then, the control unit 21 relays the communication between each function unit assigned as the USB device and the wireless communication unit 29 to the PC 2 (s17). That is, the USB emulator unit 53 is used to convert the data for each functional unit such as the camera 24, the tuner 30, the reader / writer function unit 27, and the USB data, and the conversion unit 54 is used for USB. And the data for the network are converted, and the communication between each function unit assigned as the USB device and the wireless communication unit 29 is relayed to the PC 2.

  In addition, after receiving the connection request, the smartphone 1 may transmit information on each functional unit that can be assigned as a USB device to the PC 2 as assignable information. In this case, based on the received assignable information, the PC 2 displays a list of functional unit information of the smartphone 1 that can be assigned as a USB device on the display screen of the PC 2. Then, the user selects each functional unit of the smartphone 1 that the user wants to use as a USB device, and transmits information indicating the selected functional unit to the smartphone 1 as selection information. The smartphone 1 that has received the selection information assigns each functional unit as a USB device using the USB emulator unit 53 based on the selection information.

  Thereby, even when connected to the PC 2 via the wireless communication unit 29, the PC 2 recognizes each functional unit on the smartphone 1 side as a USB device.

  Note that the smartphone 1 is preferably configured not to transmit a connectable signal when the PC 2 has already recognized each function unit as a USB device. That is, in the flowchart of FIG. 4, after confirming the network connection (s12: Yes), the smartphone 1 determines whether each function unit is already recognized as a USB device by the PC 2, and has already recognized it. Returns to step 11 (s11) of FIG. If not recognized, the process proceeds to the next step, and an operation of transmitting a connectable signal is performed (in the example of FIG. 4, the process proceeds to the determination in s13 and the process in s14). As a result, the smartphone 1 is configured not to transmit a connectable signal until the connection with the recognized PC 2 is released (Yes in s53 in FIG. 6). In this case, similarly to the connection using the local I / F, the one-to-one connection with the PC 2 can be realized.

  On the other hand, FIG. 5 is a flowchart showing the operation of the PC 2. First, the control unit 31 determines whether or not another device is connected to the local I / F 35, that is, as shown in FIG. 1C, whether or not the smartphone 1 is connected via USB (s31). . When the USB connection is established, the control unit 31 performs data transmission / reception with the smartphone 1 via the USB driver 62. Thereby, when connected to the smartphone 1 via USB, each functional unit on the smartphone 1 side can be used as a USB device.

  On the other hand, when determining that the USB connection is not established, the control unit 31 determines whether another device is connected to the wireless communication unit 37, that is, as illustrated in FIGS. 1A and 1B. Then, it is determined whether another device, for example, the access point 4 is connected via the network (s32). If no other device is connected via the network, the process returns to the determination process of s31.

  As shown in FIGS. 1A and 1B, when it is determined that another device is connected via the network, it is further determined whether a connectable signal has been received (s33). If the connectable signal has not been received, the process returns to the determination process of s31.

  When receiving a connectable signal from the smartphone 1, the control unit 31 transmits a connection request including its own address information to the smartphone 1 (s34). The connection request includes information such as a device class inquiry. In addition, although demonstrated as an example which transmits a connection request to the smart phone 1 automatically when a connectable signal is received here, when the connectable signal is received, that is displayed on the display 32, A connection request may be transmitted when a user connection operation is received and the connection operation is received.

  Thereafter, the control unit 31 determines whether each functional unit of the smartphone 1 is connected (s35). That is, when the device information of the USB mass storage class is returned from the smartphone 1 in response to the device class inquiry included in the connection request, the removable media attached to the smartphone 1 is recognized as the USB mass storage device. To do.

  Then, the control unit 31 uses the conversion unit 71 to construct a virtual local I / F so that the internal system 61 recognizes the device on the smartphone 1 side as a USB device connected by the local I / F ( s36), the network standard packet data and the USB standard data are converted, and the communication with the smartphone 1 is relayed via the wireless communication unit 37 (s37). That is, when the conversion unit 71 virtually functions as a local I / F (that is, USB I / F) and receives data conforming to the USB standard from the internal system 61, the conversion unit 71 converts the data into packet data of the network standard and performs wireless communication. It transmits to the smartphone 1 via the unit 37. In addition, the packet data received from the smartphone 1 is converted into a data structure for USB and transmitted to the internal system 61 via the USB driver 62.

  In this way, the information processing system of the present invention can cause the PC 2 to recognize the device on the smartphone 1 side as a USB device even when the smartphone 1 is connected via a network. For example, the PC 2 can also use the camera 24 of the smartphone 1 as a USB camera device connected to its own USB I / F. It is also possible to use the tuner 30 of the smartphone 1 as a USBTV capture device connected to its own USB I / F.

  Next, FIG. 6 is a flowchart showing an operation at the time of disconnection. The flow on the left side of the figure shows the operation of the smartphone 1, and the flow on the right side of the figure shows the operation of the PC 2. These operations are performed when the smartphone 1 and the PC 2 are connected.

  First, the control unit 21 of the smartphone 1 determines whether or not a connection release operation has been received from the user (s51). For example, when a connection release switch icon is displayed on the display 22 and an operation of touching the connection release switch icon on the touch panel 25 is received, it is determined that the connection release operation has been performed. If the connection release operation has not been performed, the process returns to the determination process of s51.

  It should be noted that when the user operates the PC 2, a connection release signal indicating connection release may be transmitted from the PC 2. In this case, the control unit 21 of the smartphone 1 determines whether or not a connection release operation has been received from the user by receiving a connection release signal from the PC 2.

  When the control unit 21 receives the connection release operation, the control unit 21 transmits a removal request to the PC 2 (s52). When the removal request is received (s61), the PC 2 returns to the smartphone 1 that the connection with the smartphone 1 is to be released, and releases the logical connection with the smartphone 1 (s62). The logical connection is canceled when the communication via the network is stopped, the communication between the USB driver 62 and the conversion unit 71 is canceled (unmounted), or the smartphone 1 is physically connected with the USB cable. Is to cancel (unmount) the communication with.

  When the logical connection is released, that is, when there is a reply to the removal request from the PC 2 (s53), the control unit 21 releases the assignment of each function unit as a device, and sends each function unit to the internal system 41. Connect (s54). That is, the switching unit 42 connects the functional units of the camera 24, the tuner 30, and the reader / writer functional unit 27 to the internal system 41.

  As described above, when the user operates the smartphone 1, the virtual local I / F connection between the smartphone 1 and the PC 2 is released and each functional unit is automatically connected to the internal system 41. It is possible to shift to the original state (a state in which the smartphone 1 and the PC 2 are not connected) with a simple operation.

  In the present embodiment, the smartphone 1 is shown as an example of the portable information processing apparatus, but various other aspects of the portable information processing apparatus such as a tablet PC and a digital audio player can be considered. Further, although the notebook type PC 2 is shown as the client device, a desktop type PC or the client device side may be an information processing device such as a smartphone.

  It should be noted that the switch operation, connection signal transmission / reception, and connection request transmission / reception operations shown in s13 to s15 in FIG. For example, when the smartphone 1 is connected to the PC 2, the device on the smartphone 1 side may be recognized by the PC 2 as a USB device.

  In addition, any one or more functional units may be recognized as a USB device. The switching unit 42 may emulate the function of the USB hub, and each function unit may be simultaneously connected to the PC 2 as a USB device. In this case, each functional unit connected to the PC 2 at the same time as a USB device may be individually removable by receiving a user operation.

  In addition, a function unit that receives a user operation and causes the PC 2 to recognize it as a USB device may be switched. For example, when the icons of the camera 24, the tuner 30, and the reader / writer function unit 27 are displayed on the display 22, and the icon of the camera 24 is selected, the PC 2 is recognized as a USB device, and the other The tuner 30 and the reader / writer function unit 27 are connected to the internal system 41.

  Each functional unit is not limited to the camera, tuner, and reader / writer shown in the present embodiment. Any function that the smartphone 1 has, such as a GPS function, each sensor function (illuminance sensor, acceleration sensor, etc.), or a 3G communication function, can also be used by being emulated as a USB device.

1 ... Smartphone 2 ... PC
4 ... Access point 21 ... Control unit 22 ... Display 23 ... Flash ROM
24 ... Camera 25 ... Touch panel 26 ... Local I / F
27 ... Reader / writer function unit 28 ... RAM
29 ... Wireless communication unit 30 ... Tuner 31 ... Control unit 32 ... Display device 33 ... HDD
34 ... User I / F
35 ... Local I / F
36 ... RAM
37 ... Wireless communication unit 41 ... Internal system 42 ... Switching unit 53 ... USB emulator unit 54 ... Conversion unit 61 ... Internal system 62 ... USB driver 71 ... Conversion unit

Claims (9)

A portable information processing device, a client device connected to the portable information processing device, a device connected to the portable information processing device,
An information processing system comprising:
The portable information processing device includes a first network interface connected to the client device via a network;
A device interface connected to the device;
A first control unit that controls communication between the client device and the device interface;
With
The client device includes a second network interface connected to the portable information processing device via a network;
A second control unit for controlling communication with the portable information processing device;
With
The first control unit connects the device to an internal system of the portable information processing device, or when the portable information processing device is connected to the client device via the first network interface. Converting data for the device interface and data for the first network interface to relay communication between the device interface and the first network interface;
The second control unit converts the data for the second network interface and the data for the device interface, relays communication with the device interface via the second network interface, and transmits the portable information. An information processing system characterized by pretending that the device connected to a processing apparatus is virtually connected locally. The information processing system according to claim 1,
The portable information processing device includes a local interface directly connected to the client device,
The first control unit, when connected to the client device via the local interface, converts the data for the device interface and the data for the local interface to convert the device interface and the local interface An information processing system that relays communication with an interface and connects the device to the client device locally. In the information processing system according to claim 1 or 2,
The portable information processing apparatus includes a connection operation accepting unit that accepts a connection operation,
When the first control unit is connected to the client device via a first network interface and receives the connection operation, the first control unit transmits a connectable signal to the client device;
When the second control unit receives the connectable signal, the second control unit transmits a connection request;
When the first control unit receives the connection request, the first control unit relays communication between the device interface and the first network interface. The device is a functional unit built in the portable information processing apparatus,
The information processing system according to claim 1, wherein the first control unit assigns the functional unit as the device. The functional unit is a reader / writer functional unit for mounting a removable medium,
The information processing system according to claim 4, wherein the first control unit allocates the removable medium as a storage device.   The first control unit, when the portable information processing device is not connected to the client device, cancels assignment of the function unit as the device, and connects the function unit to the internal system. The information processing system according to claim 4 or 5. The portable information processing apparatus includes a selection receiving unit that receives an operation of selecting at least one of a plurality of functional units.
The information processing system according to claim 4, wherein the first control unit assigns the selected functional unit as the device. The portable information processing apparatus includes a release receiving unit that receives a connection release operation.
The first control unit transmits a connection release request signal to the client device when the portable information processing device is connected to the client device and receives the connection release operation;
When the second control unit receives the connection release request signal, the second control unit releases a logical connection with the portable information processing device,
5. The first control unit, when the logical connection is released, cancels the assignment of the function unit as the device and connects the function unit to the internal system. The information processing system according to claim 7. A program executed by a portable information processing device and a client device connected to the portable information processing device,
The portable information processing device includes a first network interface connected to the client device via a network;
A device interface for a device connected to the portable information processing apparatus;
A first control unit that controls communication between the client device and the device interface;
With
The client device includes a second network interface connected to the portable information processing device via a network;
A second control unit for controlling communication with the portable information processing device;
With
When the first control unit connects the device to an internal system of the portable information processing apparatus, or when the portable information processing apparatus is connected to the client apparatus via the first network interface. Converting the device interface data and the first network interface data to relay communication between the device interface and the first network interface;
Converting the data for the second network interface and the data for the device interface to the second control unit, relaying communication with the device interface via the second network interface, and A program for executing an operation of making the device connected to a processing apparatus appear to be virtually locally connected.