JP2016006598A - Information processing device, information processing system and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the occurrence of a malfunction in which a file used by an application program cannot be overwritten, or in which an overwritten file is deleted.SOLUTION: A reception part 211 receives a file stored in a server device, and the user's selection of an application that uses the file. A storage control part 212 starts the application specified by the reception part 211, acquires a specified file from the server device through a communication part 23, and stores the specified file in a file storage area 221 of a storage part 22. A deletion part 213 determines whether a combination of the application name of the application and the file name of a file to be used by the application is written in a deletion file table 210 when an application satisfying a determined condition exists among applications being executed. Since the application does not overwrite the file when written, a file identified by the file name thereof is deleted from the file storage area 221.

Description

  The present invention relates to an information processing apparatus, an information processing system, and a program.

  Patent Document 1 describes a mobile device that connects to a data storage service provided as a web service via a network, downloads and uses data used for predetermined information processing from the data storage service, and erases all data after use. Has been.

JP 2013-179472 A

By the way, there are cases where a file acquired from a storage device via a communication line is edited using an application program, and the edited file is overwritten on the original file and saved. In such a case, in the device that deletes all files after using the application program, the original file cannot be overwritten or overwritten because the original file is deleted. There may be a problem that a file is deleted.
Regardless of whether or not the application program overwrites a file, the present invention, after the application program is used, compared to an information processing apparatus that deletes all files related to the use from the storage means, The purpose is to suppress the occurrence of a problem that the file after use cannot be overwritten on the original file or the overwritten file is deleted.

In the information processing apparatus according to claim 1 of the present invention, a storage control unit that stores a file acquired via a communication line in a storage unit, and an application program that uses the file does not overwrite the file In addition, when the file after being used for the application program is deleted from the storage means, and the application program is to overwrite the file, the file after being used for the application program is Deleting means that does not delete from the storage means.
The information processing apparatus according to claim 2 of the present invention is the information processing apparatus according to claim 1, wherein the storage control unit stores the file in the storage unit when the application program overwrites the file. And when the application program does not overwrite the file, the file is stored in a second area different from the first area, and the deletion means is configured so that the application program stores the file in the first area. When a predetermined condition is satisfied after using the file, the file stored in the second area is deleted.
An information processing system according to a third aspect of the present invention includes the information processing apparatus according to the first or second aspect, and the storage device that causes the information processing apparatus to acquire the file via a communication line.
According to a fourth aspect of the present invention, there is provided a storage control unit that stores a file acquired via a communication line in a computer having a storage unit, and a storage control unit that stores the file in the storage unit. When not overwriting, the file after being used for the application program is deleted from the storage means, and when the application program is for overwriting the file, it was used for the application program. It is a program for functioning as a deleting unit that does not delete the subsequent file from the storage unit.

  According to the first, third, and fourth aspects of the invention, regardless of whether or not the application program overwrites the file, after the application program is used, all the files related to the use are stored. As compared with the information processing apparatus to be deleted from the file, it is possible to suppress the occurrence of a problem that the file after use cannot be overwritten on the original file or the overwritten file is deleted.

  According to the second aspect of the present invention, it is possible to determine which file is to be deleted based on the area where the file is stored.

1 is a diagram showing an overall configuration of an information processing system according to an embodiment of the present invention. The figure which shows the structure of a server apparatus. The figure which shows the structure of a terminal device. The figure which shows an example of a deletion file table. The figure which shows an example of a classification database. The figure which shows the functional structure of the control part of a terminal device. The figure which shows the example of the file list displayed in a display part. The flowchart which shows operation | movement until it displays a popup. The flowchart which shows operation | movement until starting an application. The flowchart which shows operation | movement when a screen control right changes between the applications currently performed.

1. Embodiment 1-1. Overall Configuration of Information Processing System FIG. 1 is a diagram showing an overall configuration of an information processing system 9 according to an embodiment of the present invention. As illustrated in FIG. 1, the information processing system 9 includes a server device 1 and a terminal device 2. The server device 1 and the terminal device 2 are connected by a communication line 3. A plurality of server apparatuses 1 may be provided. Moreover, the number of the terminal devices 2 may be plural. There may be a plurality of communication lines 3.

1-2. Configuration of Server Device FIG. 2 is a diagram illustrating a configuration of the server device 1. The control unit 11 is means for controlling the operation of each unit of the server device 1. The control unit 11 includes an arithmetic processing device such as a CPU (Central Processing Unit) and a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and executes a program stored in these storage devices.

  The communication unit 13 is an interface that communicates information with the terminal device 2 via the communication line 3. For example, the communication unit 13 is compliant with various modems, wireless communication circuits compliant with IMT-2000, or USB (Universal Serial Bus) standards. A serial interface, a wireless interface compliant with IrDA (Infrared Data Association), Bluetooth (registered trademark), and the like.

  The storage unit 12 is a large-capacity storage unit such as a hard disk, and stores a program read by the control unit 11. The storage unit 12 may include a so-called removable disk, that is, a removable recording medium.

  In addition, the storage unit 12 includes a file database (hereinafter referred to as “DB” in the figure) 121 that stores files. The file database 121 stores, for example, each file in a hierarchical manner, and a list of files (referred to as “file list”) stored in a designated hierarchy is transmitted via the communication line 3 and the communication unit 13 to the terminal device. 2, the control unit 11 extracts this file list from the file database 121 and transmits it to the terminal device 2. The type of each file stored in the file database 121 is determined. The terminal device 2 that has specified the file can also specify the type of the file. Here, an extension corresponding to the file type is included in a part of the name of the file (referred to as “file name”). The “extension” is a character string composed of characters from a delimiter such as a dot character closest to the last character in the file name to the last character. In addition to the extension, the file type may be determined by header information included in the file, metadata associated with the file, or the like.

1-3. Configuration of Terminal Device FIG. 3 is a diagram illustrating a configuration of the terminal device 2. The control unit 21 is means for controlling the operation of each unit of the terminal device 2. The control unit 21 includes an arithmetic processing device such as a CPU and a storage device such as a ROM and a RAM, and executes a program stored in these storage devices. The programs include application programs (hereinafter referred to as “applications”) that are activated in response to a user's selection.

  A deletion file table 210 and a type database 219 are stored in the RAM of the control unit 21. FIG. 4 is a diagram illustrating an example of the deletion file table 210. The deletion file table 210 is a table describing files that are scheduled to be deleted after use, among the files acquired by the terminal device 2 from the server device 1. As illustrated in FIG. 4, the deletion file table 210 associates application names, which are application names, with file names. Thereby, in the terminal device 2, it is represented that the application identified by the application name uses the file identified by the file name associated with the application name.

  FIG. 5 is a diagram illustrating an example of the type database 219. The type database 219 includes a type list 2191 that is a list of character strings representing types. The type database 219 has an application classification list 2192 that classifies apps that can be activated in the terminal device 2 for each type of file that can be used by the app. Here, the application is distinguished by whether or not the file to be used can be overwritten. An app that can overwrite a file is distinguished as an “overwrite app”, and an app that cannot be overwritten and can only be referred to is referred to as a “reference app”.

  For example, in the case of the type database 219 shown in FIG. 5, the application names of the overwriting application that can use the file of the type “txt” are α and β, and the application of the reference application that can use the file of the type “txt”. The name is γ. On the other hand, there is no overwriting application that can use the file of type “png”, and the application names of the reference applications that can use the file of type “png” are γ and δ. α and β are, for example, editing applications that edit and overwrite files. γ and δ are, for example, a mail transmission application that refers to a file and pastes it in a mail text, and a printing application that refers to a file and prints it without changing the contents.

  Note that “overwriting” a file means that a file with a certain file name is edited, and the edited content is saved as a file with that file name in the terminal device 2. In the storage unit 22, the file before being overwritten by the overwriting is lost. On the other hand, an application that does not overwrite a file only refers to that file.

  By referring to the type database 219, the control unit 21 specifies an overwriting application and a reference application that can use the file in the terminal device 2 for each type of the acquired file.

  The communication unit 23 is an interface that communicates operation information and the like with the server device 1 via the communication line 3, and is a wireless communication circuit compliant with, for example, IMT-2000.

  The display unit 25 is a display device using liquid crystal or the like, and has a screen that displays an image in response to an instruction from the control unit 21. The display unit 25 has a VRAM (Video RAM) for storing image data to be displayed on the screen. The size of an image that can be stored in the VRAM is displayed on the screen. Is larger than the possible image size. The display unit 25 selects data to be displayed on the screen from the VRAM and switches the screen.

  Here, the screen control right will be described. The screen control authority is an authority to control the screen of the display unit 25 and is exchanged between applications (including an operating system) executed by the control unit 21. Only the application that has acquired the screen control right will execute the “foreground” process that is permitted to control the screen of the display unit 25, and other applications may control the screen of the display unit 25. Perform unauthorized “background” processing. When an application having the screen control right ends normally, the screen control right is passed to another application and the process ends. When an application having the screen control right ends abnormally, another application acquires the screen control right. In any case, when the application is terminated, the screen control right is lost.

  The operation unit 24 has operation elements such as a touch panel and buttons for giving various instructions, receives an operation by the user, and supplies a signal corresponding to the operation content to the control unit 21. The operation unit 24 may have a transparent touch panel superimposed on a surface on which an image is displayed on the display unit 25.

  The storage unit 22 is a large-capacity storage unit such as a flash memory, and stores a program read by the control unit 21. The storage unit 22 may include a so-called removable disk, that is, a removable recording medium.

  In addition, the storage unit 22 includes a file storage area 221 that stores a file acquired from the server device 1 via the communication unit 23 and the communication line 3.

1-4. Functional Configuration of Terminal Device FIG. 6 is a diagram illustrating a functional configuration of the control unit 21 of the terminal device 2. The control unit 21 of the terminal device 2 functions as a reception unit 211, a storage control unit 212, and a deletion unit 213.

  First, the reception unit 211 acquires a file list from the server device 1 via the communication unit 23 and the communication line 3 and causes the display unit 25 to display the file list. FIG. 7 is a diagram illustrating an example of a file list displayed on the display unit 25. For example, when the reception unit 211 acquires the file list “FA.txt”, “FC.png”, “FB.doc”,... From the server device 1, the display unit 25 displays the window shown in FIG. W0 is displayed. The window W0 includes a line describing the name of each file constituting the file list in addition to a line describing the word “back to top”.

  Secondly, the reception unit 211 identifies a file selected by the user from the file list displayed on the display unit 25. In the window W0 shown in FIG. 7A, for example, when the user designates the position P0 by touching or the like, the accepting unit 211 changes the hierarchy of the file database 121 to be browsed to one level above. When the user designates the position P1, the reception unit 211 identifies the file identified by the file name “FA.txt”, and when the user designates the position P2, identifies the file identified by the file name “FC.png”.

  Third, the accepting unit 211 identifies the type of the file based on the extension of the identified file name. Fourthly, the reception unit 211 refers to the type database 219 and identifies the overwrite application and the reference application associated with the identified file type.

  Fifth, the reception unit 211 causes the display unit 25 to display a pop-up window (hereinafter referred to as “pop-up”) for allowing the user to select an application to be activated from the identified overwriting application and reference application.

  For example, when the user designates the position P1 on the screen shown in FIG. 7A and “FA.txt” is specified as the file, the reception unit 211 specifies the type “txt” of the file. Then, the reception unit 211 refers to the type database 219 illustrated in FIG. 5 and identifies α and β of the overwriting application corresponding to the type “txt” and γ of the reference application corresponding to the type “txt”. In this case, since both the overwriting application and the reference application corresponding to the file type exist, the accepting unit 211 causes the display unit 25 to display the pop-up W1 shown in FIG. In the pop-up W1 shown in FIG. 7B, in addition to a cancel button for accepting an instruction to cancel the process, corresponding buttons are displayed so that either the overwriting application or the reference application can be selected. The

  On the other hand, when the user designates the position P2 on the screen shown in FIG. 7A and “FC.png” is specified as the file, the reception unit 211 specifies the type “png” of the file. Then, the reception unit 211 refers to the type database 219 illustrated in FIG. 5 and identifies γ and δ of the reference application corresponding to the type “png”. In this case, there is a reference application corresponding to the file type, but there is no overwriting application. Therefore, the reception unit 211 causes the display unit 25 to display a pop-up W2 shown in FIG. In the pop-up W2 shown in FIG. 7C, a button for selecting a reference application is displayed in addition to the stop button.

  Sixth, the reception unit 211 specifies an application selected by the user operating the pop-up displayed on the display unit 25, and notifies the storage control unit 212 of the combination of the application and the file. When there is only one corresponding overwriting application or reference application, when the user touches the button of the overwriting application, the one overwriting application is specified, and when the user touches the button of the reference application, the one of the overwriting application is identified. A reference app is identified.

  When there are two or more corresponding overwriting apps or reference apps, a pop-up for further selecting the two or more apps is displayed when the user touches any button. For example, when the user designates the position P3 on the screen shown in FIG. 7C and a button for selecting “reference app” in the pop-up W2 is operated, as shown in FIG. 7D. Then, a pop-up W3 for selecting γ and δ of the reference application corresponding to the type “png” is displayed. Thereby, the reception unit 211 receives selection by the user of the file stored in the server device 1 and the application using the file.

  Seventh, when the identified application is a reference application, the reception unit 211 writes the combination of the application and the file in the deletion file table 210.

  The storage control unit 212 activates the application specified by the reception unit 211 and downloads (acquires) the specified file from the server device 1 via the communication unit 23 and the communication line 3. Store in the storage area 221. The activated application uses this file.

  When there is an application that satisfies a predetermined condition among running applications, the deletion unit 213 includes a combination of the application name of the application and the file name of the file used by the application. It is determined whether or not the information is described in 210. If the deletion unit 213 determines that the combination of the application name and the file name is described in the deletion file table 210, the deletion unit 213 deletes the file identified by the file name from the file storage area 221.

1-5. Operation of Terminal Device FIG. 8 is a flowchart showing an operation of the terminal device 2 until a popup is displayed. The control unit 21 of the terminal device 2 is connected to the server device 1 via the communication unit 3 and the communication line 3 (step S101), and acquires a file list of the determined hierarchy from the server device 1 (step S102). The control unit 21 displays the acquired file list on the display unit 25 (step S103), monitors a user operation on the operation unit 24 (step S104), and determines that there is no user operation (step S104; NO). ) Continue to monitor this. If it is determined that there is a user operation (step S104; YES), the control unit 21 determines whether a file is selected by the operation (step S105).

  When it is determined that the file is not selected (step S105; NO), the selected item indicates movement to another layer, and therefore the control unit 21 changes the layer designated for the server device 1. Thus, the hierarchy to be browsed is moved (step S106), and the process returns to step S102. On the other hand, when determining that the file is selected (step S105; YES), the control unit 21 specifies the type of the selected file with reference to its extension or the like (step S107), and the type database 219. To identify the application corresponding to the type (step S108). Then, the control unit 21 causes the display unit 25 to display a pop-up corresponding to the identified number or classification of the apps (whether it is an overwriting app or a reference app) (step S109).

  FIG. 9 is a flowchart showing an operation of the terminal device 2 until the application is activated. When the pop-up is displayed, the control unit 21 monitors a user operation on the operation unit 24. For example, as shown in FIG. 9, the control unit 21 determines whether or not an operation for canceling the application selection process has been performed (step S201), and determines that an operation for canceling has been performed (step S201; (YES), the displayed pop-up is deleted (step S202), and the process is terminated.

  If it is determined that the operation for canceling is not performed (step S201; NO), the control unit 21 determines whether an operation for starting the reference application is performed (step S203). When the control unit 21 determines that an operation for starting the reference application has been performed (step S203; YES), the control unit 21 deletes the combination of the application name of the reference application and the file name of the file used by the reference application The file is added to the file table 210 (step S204), the reference application is activated (step S205), and the process ends.

  On the other hand, when determining that the operation for starting the reference application has not been performed (step S203; NO), the control unit 21 determines whether the operation for starting the overwriting application has been performed (step S206). ). When the control unit 21 determines that an operation for starting the overwriting application has been performed (step S206; YES), the control unit 21 starts up the overwriting application (step S205) and ends the process. When determining that the operation for starting the overwriting application has not been performed (step S206; NO), the control unit 21 returns the process to step S201.

  FIG. 10 is a flowchart showing an operation of the terminal device 2 when the screen control right is transitioned between running applications. The control unit 21 determines whether or not the screen control right has changed between the running applications (step S301). The screen control right is the right to control the screen of the display unit 25 as described above. The control unit 21 identifies the application that has lost the screen control right and the file used when the application has the screen control right (step S302), the application name of the application, and the file name of the file. Is determined in the deletion file table 210 (step S303).

  When it is determined that the application name and file name are not described in the deletion file table 210 (step S303; NO), the control unit 21 does not delete the file identified by this file name from the storage unit 22, This process ends. That is, when the application that uses the file is an “overwriting application” that overwrites the file, the terminal device 2 does not delete the file that has been used by the application from the storage unit 22 (storage means). It is an example of a processing apparatus.

  On the other hand, when it is determined that the application name and file name are described in the deletion file table 210 (step S303; YES), the control unit 21 deletes the file identified by this file name from the storage unit 22. (Step S304) When the screen control right is acquired again for the application identified by this application name, the deleted file is set to be acquired again (Step S305), and the process is terminated. That is, when the application that uses the file is a “reference application” that does not overwrite the file, the terminal device 2 deletes the file that has been used by the application from the storage unit 22 (storage means). It is an example of information processing apparatus.

  As described above, when the application using the file acquired from the server device 1 does not overwrite this file, the application name of the application is the file name of the file to be used because the application is a reference application. At the same time, it is written in the deletion file table 210. Therefore, when a predetermined condition is satisfied, such as losing the screen control right, the file used by the application is deleted from the storage unit 22 of the terminal device 2.

  Thereby, the file after being used by the reference application does not remain in the terminal device 2, and the user's operation for deleting this file becomes unnecessary. In addition, the possibility that a user's erroneous operation occurs due to the remaining files after use is reduced. Furthermore, since a file that may be overwritten by the overwriting application is not deleted from the terminal device 2, the possibility of losing information newly generated by overwriting the file by the overwriting application is reduced.

  In the above-described example, when the reference application loses the screen control right, the file after being used by the reference application has been deleted from the storage unit 22, but the timing at which the deletion is performed is based on a predetermined condition. As long as the above is satisfied. For example, when the reference application is terminated, the file after being used for the reference application may be deleted from the storage unit 22. Also, this determined condition is after the reference application uses the file, for example, when the determined time is reached, when the determined time has passed since the file was acquired, or It may be when the free capacity of the storage unit 22 falls below a predetermined amount.

2. Modification The above is the description of the embodiment, but the contents of this embodiment can be modified as follows. Further, the following modifications may be combined.

2-1. Modification 1
In the embodiment described above, when it is determined that the application name of the application that has lost the screen control right and the file name of the file used by the application are described in the deletion file table 210, the control unit of the terminal device 2 21 deletes the file identified by this file name from the storage unit 22, but the procedure for specifying the file to be deleted is not limited to this.

  For example, when a reference application that does not overwrite this file is activated as an application that uses the file acquired from the server device 1, the control unit 21 stores the file in the temporary storage area 222 indicated by a broken line in FIG. 3. It may be memorized. The temporary storage area 222 is a storage area that the storage unit 22 has, and is a storage area that is different from the file storage area 221. In this case, as indicated by a broken line in FIG. 6, the deletion unit 213 deletes all the files stored in the temporary storage area 222 when the determined condition is satisfied.

  In this case, the control unit 21 does not need to add the combination of the application name of the activated reference application and the file name of the file used by the reference application to the deleted file table 210. When the file is stored in the storage unit 22, the storage area in which the file is stored changes depending on whether the file is used by the overwriting application or the reference application. This is because the control unit 21 does not have to store whether or not the file is to be deleted until the “determined condition” is satisfied.

2-2. Modification 2
In the above-described embodiment, the type database 219 has the type list 2191 and the application classification list 2192 corresponding to each type, but the procedure for specifying an application that can use a file of that type from the file type is as follows. It is not limited to this. For example, each application may be associated with a table indicating the types of files that can be used. When the reception unit 211 specifies the type of the file selected by the user, the reception unit 211 may examine each application installed in the terminal device 2 and determine whether the type is described in the table of the application. .

2-3. Modification 3
The program executed by the control unit 21 of the terminal device 2 is a recording medium readable by a computer device, such as a magnetic recording medium such as a magnetic tape or a magnetic disk, an optical recording medium such as an optical disk, a magneto-optical recording medium, or a semiconductor memory. Can be provided in a stored state. It is also possible to download this program via a network such as the Internet. Note that various devices other than the CPU may be applied as the control means exemplified by the control unit 21 described above. For example, a dedicated processor or the like is used.

DESCRIPTION OF SYMBOLS 1 ... Server apparatus, 11 ... Control part, 12 ... Storage part, 121 ... File database, 13 ... Communication part, 2 ... Terminal device, 21 ... Control part, 210 ... Deleted file table, 211 ... Reception part, 212 ... Storage control 213 ... Deleting part 219 ... Type database 2191 ... Type list 2192 ... App classification list 22 ... Storage part 221 ... File storage area 222 ... Temporary storage area 23 ... Communication part 24 ... Operation part 25 ... display unit, 3 ... communication line, 9 ... information processing system.

Claims (4)

Storage control means for storing the file acquired via the communication line in the storage means;
When the application program that uses the file does not overwrite the file, the file after being used by the application program is deleted from the storage means, and the application program overwrites the file. In some cases, a deletion unit that does not delete the file after being used in the application program from the storage unit;
An information processing apparatus. The storage control means stores the file in the first area of the storage means when the application program overwrites the file, and the application program does not overwrite the file. , Storing the file in a second area different from the first area,
The information according to claim 1, wherein the deletion unit deletes the file stored in the second area when the application program satisfies the predetermined condition after using the file. Processing equipment. An information processing apparatus according to claim 1 or 2,
The storage device that causes the information processing apparatus to acquire the file via a communication line;
An information processing system. A computer having storage means;
Storage control means for storing a file acquired via a communication line in the storage means;
When the application program that uses the file does not overwrite the file, the file after being used by the application program is deleted from the storage means, and the application program overwrites the file. In some cases, a program for causing the file after being used by the application program to function as a deletion unit that does not delete the file from the storage unit.

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