JP2018180767A - Information processing apparatus, information processing method, and information processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce communication traffic when a self-restoration format file is downloaded.SOLUTION: An information processing apparatus comprises: a storage unit for storing a restoration program part included in a self-restoration format file including a compressed data part compressed by a predetermined compression method and a restoration program part restoring a compressed data part; a control unit for downloading parts excluding the restoration program part in the self-restoration format file to be downloaded when the restoration program part of the self-restoration format file to be downloaded is stored in the storage unit; and an acquisition unit for acquiring a self-restoration format file by combining a part other than the downloaded restoration program part of the self-restoration format file with a restoration program part of the self-restoration format file to be downloaded stored in the storage unit.SELECTED DRAWING: Figure 6

Description

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

  As a method of reducing the amount of communication when downloading data from a server, there is a method of compressing data by a predetermined compression method. There is also a self-restoration format file that includes a compression program and a decompression program for decompressing the compressed data. The self-restoration type file is also referred to as a self-extraction file. By executing the self-restoration format file, the restoration program included in the self-restoration format file is executed, and the compressed data included in the self-restoration format file is restored to the original data.

Unexamined-Japanese-Patent No. 2006-227979 Unexamined-Japanese-Patent No. 6-337825

  However, when downloading the self-restoration type file, even if the self-restoration type file having the same restoration program has already been acquired, the entire file including the restoration program is downloaded. Thus, downloading the same restore program portion results in downloading duplicate data.

  An aspect of the present invention aims to provide an information processing apparatus, an information processing method, and an information processing program capable of reducing the amount of communication when downloading a self-restoration type file.

  One aspect of the present invention is an information processing apparatus including a storage unit, a control unit, and an acquisition unit. The storage unit stores a restoration program part included in a self-restoration format file including a compressed data part compressed according to a predetermined compression method and a restoration program part for restoring the compressed data part. When the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit, the control unit downloads excluding the restoration program portion in the self-restoration format file to be downloaded. The acquisition unit combines a portion of the downloaded self-restoration format file other than the restoration program portion with the restoration program portion of the self-restoration format file to be downloaded stored in the storage unit, and generates the self-restoration format file get.

  According to the disclosed information processing apparatus, information processing method, and information processing program, it is possible to reduce the amount of communication when downloading a self-restoration type file.

FIG. 1 is a diagram showing an example of a system configuration of a software distribution system according to the first embodiment. FIG. 2 is a diagram showing an example of the data structure of the self-restoration type file. FIG. 3 is a diagram illustrating an example of the hardware configuration of the server. FIG. 4 is a diagram showing an example of a functional configuration of the server. FIG. 5 is a diagram showing an example of file configuration information. FIG. 6 is a diagram showing an example of a functional configuration of the client terminal. FIG. 7 is an example of the update target list screen of the client terminal. FIG. 8 is an example of a flowchart of processing of the server according to the first embodiment. FIG. 9A is an example of a flowchart of processing of the client terminal according to the first embodiment. FIG. 9B is an example of a flowchart of processing of the client terminal according to the first embodiment. FIG. 9C is an example of a flowchart of processing of the client terminal according to the first embodiment. FIG. 10 is a diagram showing an example of a processing sequence between the server and the client terminal in the software distribution system according to the first embodiment. FIG. 11 is an example of a flowchart of processing of the server according to the second embodiment. FIG. 12A is an example of a flowchart of processing of the client terminal according to the second embodiment. FIG. 12B is an example of a flowchart of processing of the client terminal according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described based on the drawings. The configuration of the following embodiment is an exemplification, and the present invention is not limited to the configuration of the embodiment.

First Embodiment
FIG. 1 is a diagram showing an example of a system configuration of a software distribution system 100 according to the first embodiment. The software distribution system 100 includes a server 1 and a client terminal 2.

  For example, the server 1 is managed by the manufacturer of the client terminal 2 and self-restores update files of a plurality of software divided according to the model of the client terminal 2, model number, OS (Operating System) name, OS version, etc. It is a server held as a format file. The software update file is a file in which a software update program is described. The server 1 is an example of an “information processing apparatus” including a “generation unit”, a “storage unit”, and a “transmission unit”.

  The client terminal 2 inquires of the server 1 and collectively downloads update files of a plurality of software that can be updated. Batch download is to download a plurality of files by one instruction input. The client terminal 2 is an example of an “information processing apparatus” including a “storage unit”, a “control unit”, and an “acquisition unit”.

  In the first embodiment, when the restoration program portion of the self-restoration format file to be downloaded is not stored in the storage unit, the client terminal 2 downloads the entire self-restoration format file from the server 1. The client terminal 2 extracts a restoration program portion from the downloaded self-restoration format file, and stores it in the storage unit.

  When the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit, the client terminal 2 specifies and downloads the compressed data portion of the file from the server 1. The client terminal 2 combines the downloaded compressed data portion and the restoration program portion stored in the storage unit to obtain a self-restoration type file. This makes it possible to reduce the download of duplicate restoration program parts when a self-restoration file having the same restoration program part has been obtained.

  The download of the software update file is an example of batch downloading of a plurality of self-restoration format files, and the application destination of the technology described in the first embodiment is not limited to the download of the software update file. Further, application destinations of the technology described in the first embodiment are not limited to batch downloading of a plurality of self-restoration format files. The technology described in the first embodiment is applicable to downloading of a self-restoration type file.

  FIG. 2 is a diagram showing an example of the data structure of the self-restoration type file. The self-restoration type file is, for example, an executable file with the extension “.exe”. The self-restoration type file includes a restoration program portion and a compressed data portion. In the first embodiment, the software update file is a self-restoration type file. However, software update files are not limited to self-restoration files.

  When the software update file is a self-restoration type file, for example, the compressed data portion of the self-restoration type file is data in which the software package is compressed. The software package is, for example, a set including the main body of the corresponding software, and a plurality of files used at the time of installation and execution of the corresponding software, and displayed as a tree structure including, for example, folders in the server 1 and the client terminal 2 Be done.

  The data compression format depends on, for example, a self-restoration file creation program. For example, there is a program for creating a self-restoration format file using one fixed data compression format, and another program for creating a self-restoration format file using a data compression format selected by the user from among a plurality of data compression formats.

  Further, whether the description of the restoration program included in the restoration program portion is fixed or variable depends on, for example, a self-restoration file creation program. For example, when the creation program of the self-restoration format file uses one fixed data compression format, the description of the program included in the decompression program portion is a description corresponding to the fixed one data compression format. Become. For example, when the creation program of the self-restoration format file corresponds to a plurality of data compression formats, the description of the program included in the decompression program portion is a description corresponding to the compression format of the compression data portion, or It may be a description corresponding to all data compression methods corresponding to the creation program of the self-restoration type file.

  That is, even if the data of the restoration program part is the same self-restoration type files created by the same self-restoration type file creation program, the case where the same data is included and the case where different data are included There is. In the first embodiment, the data portion of the restoration program is described on the premise that the self-restoration format files created by the creation program of the same self-restoration format file match.

  In the example shown in FIG. 2, although the restoration program portion is stored at the beginning of the self-restoration format file, the storage location of the restoration program portion is not limited to the beginning of the file. For example, the storage location of the decompression program portion may be the end of the file, between the compressed data portion and the compressed data portion. The storage location of the restoration program portion in the self-restoration file depends on the self-restoration file creation program.

The creation program of the self-restoration type file includes a program in which the storage position of the restoration program portion in the self-restoration type file is previously known and a program in which the storage position is not previously known. Further, in the creation program of the self-restoration format file, the storage location of the restoration program portion in the self-restoration format file includes one common to all files and one different for each file.

<Device configuration>
FIG. 3 is a diagram showing an example of the hardware configuration of the server 1. The server 1 is, for example, a dedicated or general-purpose computer. The server 1 is a CPU (Central Processing Unit) 1
A main storage unit 102, an input unit 103, an output unit 104, an auxiliary storage unit 105, and a network interface 107 are provided. Also, they are connected to one another by a bus 109.

  The input device 103 is, for example, a keyboard, a mouse or the like. Data input from the input device 103 is output to the CPU 101. The output device 104 outputs the processing result of the CPU 101. The output device 104 includes a display and a printer.

  The auxiliary storage device 105 stores various programs and data used by the CPU 101 when executing each program. The auxiliary storage device 105 is, for example, a non-volatile memory such as an EPROM (Erasable Programmable ROM), a flash memory, or a hard disk drive. The auxiliary storage device 105 holds, for example, an operating system (OS), a file distribution program 105P, a self-restoration type file creation program, and various other application programs. The file distribution program 105P is a program for distributing a file for which a transmission request has been received.

  The main storage device 102 provides the CPU 101 with a storage area and a work area for loading a program stored in the auxiliary storage device 105, and is used as a buffer. The main storage device 102 includes, for example, a semiconductor memory such as a random access memory (RAM).

  The CPU 101 executes various processes by loading the OS and various application programs held in the auxiliary storage device 105 into the main storage device 102 and executing them. The number of CPUs 101 is not limited to one, and a plurality of CPUs may be provided.

  The network interface 107 is an interface that inputs and outputs information with the network. The network interface 107 includes an interface connected to a wired network and an interface connected to a wireless network. The network interface 107 is, for example, a network interface card (NIC), a wireless local area network (LAN) card, or the like. Data and the like received by the network interface 107 are output to the CPU 101.

  The hardware configuration of the server 1 illustrated in FIG. 3 is an example, and the present invention is not limited to the above, and omission, replacement, or addition of components can be appropriately made according to the embodiment. For example, the server 1 may include a portable recording medium drive and execute a program recorded in the portable recording medium. The portable recording medium is, for example, an SD card, a miniSD card, a microSD card, a USB (Universal Serial Bus) flash memory, a CD (Compact Disc), a DVD (Digital Versatile Disc), a Blu-ray (registered trademark) Disc, or a flash. It is a recording medium such as a memory card. For example, the server 1 may not include the input device 103 and the output device 104.

FIG. 4 is a diagram showing an example of a functional configuration of the server 1. The server 1 includes a software package registration unit 11, a software package storage unit 12, a file conversion unit 13, a transmission file storage unit 14, a file analysis unit 15, and a file configuration information storage unit 1 as functional components.
6, the transmission control unit 17 is provided.

  The software package registration unit 11, the software package storage unit 12, the transmission file storage unit 14, the file analysis unit 15, the file configuration information storage unit 16, and the transmission control unit 17 are, for example, the CPU 101 of the server 1 performs the file distribution program 105P. It is a functional component achieved by executing.

  The software package registration unit 11 is a user interface. The software package registration unit 11 receives an input of a software package by user operation. The software package registration unit 11 stores the input software package in the software package storage unit 12. Further, when the software package registration unit 11 stores the software package in the software package storage unit 12, the software package registration unit 11 outputs, to the file conversion unit 13, a conversion request for converting the software package into a self-restoration format file.

  The software package storage unit 12 holds the software package. The software package storage unit 12 is, for example, part of a storage area secured for the file distribution program 105P in the auxiliary storage device 105.

  The file conversion unit 13 is a functional component achieved by the CPU 101 of the server 1 executing the creation program of the self-restoration type file. The creation program of the self-restoration type file executed by the CPU 101 of the server 1 is not limited to one type, and may be executed from among a plurality of types of self-restoration type file creation programs.

  When the file conversion unit 13 receives an input of a conversion request to a self-restoration format file from the software package registration unit 11, the file conversion unit 13 reads out and converts the software package stored in the software package storage unit 12 and converts the self-restoration format file. Generate Specifically, the file conversion unit 13 compresses the software package in accordance with a predetermined data compression method to obtain a compressed data portion, and combines the compressed data portion and the decoding program portion to obtain a self-restoration format file. The file conversion unit 13 stores the created self-restoration format file in the transmission file storage unit 14. The file conversion unit 13 is an example of a “generation unit”.

  The transmission file storage unit 14 holds a self-restoration type file. The transmission file storage unit 14 is, for example, part of a storage area secured for the file distribution program 105P in the auxiliary storage device 105.

  The file analysis unit 15 analyzes the self-restoration format file stored in the transmission file storage unit 14 and acquires file configuration information. The acquired file configuration information is stored in the file configuration information storage unit 16. Details of the file configuration information will be described later. The file configuration information is an example of “file configuration information”.

  The file configuration information storage unit 16 holds file configuration information corresponding to the self-restoration format file stored in the transmission file storage unit 14. The file configuration information storage unit 16 is, for example, part of a storage area secured for the file distribution program 105P in the auxiliary storage device 105. The file configuration information storage unit 16 is an example of a “storage unit”.

  The transmission control unit 17 receives a file transmission request from the client terminal 2 and transmits a target file. When the file transmission request from the client terminal 2 includes the section specification of the file, the transmission control unit 17 transmits data corresponding to the section specification of the target file to the client terminal 2.

  In addition, the transmission control unit 17 receives a list request of software to be updated from the client terminal 2, and transmits list information of software to be updated and file configuration information of update files of each software to be updated to the client terminal 2. Send. Details of the processing of the transmission control unit 17 will be described later. The transmission control unit 17 is an example of a “control unit”.

  The software package stored in the software package storage unit 12 is converted by the file conversion unit 13 when, for example, a self-restoration format file is created from the software package by conversion and stored in the transmission file storage unit 14. It may be deleted.

  If there is only one type of self-restoration format file creation program executed by the CPU 101, the file analysis unit 15 is not provided, and the file conversion unit 13 creates file configuration information instead of the file analysis unit 15. May be

  FIG. 5 is a diagram showing an example of file configuration information. The file configuration information is information on the self-restoration format file stored in the software package storage unit 12. The file configuration information includes, for example, a file name, a program name of a creation program of a creation source of the self-restoration format file, and information indicating a storage position of the restoration program.

  The file name is information for identifying a self-restoration format file which is an object of configuration information. The file name is not limited to the file name. For example, when the self-restoration format file stored in the transmission file storage unit 14 spans a plurality of storage areas, it can be a path name including the position of the storage area. Also, the file configuration information need not be in one-to-one correspondence with the self-restoration format file. For example, a plurality of self-restoration format files can be designated as targets by specifying them in the form of a wildcard.

  The program name of the creation program of the creation source of the self-restoration format file is information for identifying the type of the creation program of the self-restoration format file. The information is not limited to the program name, and any information that can identify the type of the self-restoration format file creation program can be included in the file configuration information. The program name of the creation program of the creation source of the self-restoration type file is an example of “identification information of the program that has created the self-restoration type file”.

  The information indicating the storage position of the restoration program portion may be a combination of the start position or the end position of the restoration program portion and the size of the restoration program. For example, the information indicating the storage position of the restoration program portion is 100 bytes from the head, 100 bytes from the end, and the like. Alternatively, the information indicating the storage position of the restoration program portion may be a combination of the start position and the end position of the restoration program portion. For example, the information indicating the storage position of the restoration program portion may be designated in a section, such as from the position of 0 byte to the position of 100 bytes from the head. The information indicating the storage position of the restoration program portion included in the file configuration information is an example of “information regarding the storage position of the restoration program portion”.

  The data structure of the file configuration information shown in FIG. 5 is an example, and the present invention is not limited to this. For example, the file configuration information may include information indicating the storage position of the compressed data portion instead of information indicating the storage position of the decompression program portion or in addition to information indicating the storage position of the decompression program portion. For example, the file configuration information may include the size of the self-restoration type file.

FIG. 6 is a diagram showing an example of a functional configuration of the client terminal 2. The client terminal 2 is, for example, a terminal device such as a PC (Personal Computer), a smartphone, or a tablet terminal. The hardware configuration of the client terminal 2 is, for example, substantially the same as that of the server 1 and is not shown. The client terminal 2 includes, for example, a CPU, a main storage device, an auxiliary storage device, an input device, an output device, and a network interface as hardware components. The client terminal 2 is an example of the “information processing apparatus”.

  The client terminal 2 includes, for example, an OS, an update file download control program, a restoration program for restoring a self-restoration format file, and a software installation program in the auxiliary storage device. The update file download control program is a program for downloading the software update file of the client terminal 2. The update file download control program is an example of the “information processing program”. The restoration program for restoring the self-restoration type file is a program for acquiring the software package from the self-restoration type file. The software installation program is a program for installing a software package.

  The client terminal 2 includes, as functional components, a reception control unit 21, a reception file storage unit 22, a restoration program partial extraction unit 23, a restoration program partial storage unit 24, a reception data combining unit 25, a file restoration unit 26, and a software package storage unit 27, an installation unit 28, and a primary storage unit 29.

  The reception control unit 21, the reception file storage unit 22, the restoration program partial extraction unit 23, the restoration program partial storage unit 24, and the reception data combination unit 25 are executed, for example, by the CPU of the client terminal 2 executing the update file download control program It is a functional component to be achieved.

  When an instruction to display an update list of software of the client terminal 2 is input by a user operation, the reception control unit 21 transmits a list request of software to be updated to the server 1. The list request of software to be updated includes, for example, execution environment information of the client terminal 2. The execution environment information of the client terminal 2 includes, for example, a model name of the client terminal 2, a model number, an OS name, a version of the OS, and the like.

  The reception control unit 21 receives, from the server 1 as a response to a list request for software to be updated, list information on software to be updated according to the execution environment information of the client terminal 2 and a self-restoration format that is an update file of the software. Receive file configuration information of a file. The reception control unit 21 stores the received file configuration information in the temporary storage unit 29.

  The reception control unit 21 extracts information of software that can be updated by the client terminal 2 from the list information of update target software received from the server 1 and outputs an update target list screen including the extracted software list to the display . The update target list screen is a screen for providing the user of the client terminal 2 with information of software that can be updated, and selecting software to be updated. Details of the update target list screen will be described later.

  The reception control unit 21 receives, for example, an input of designation of software to be updated and an instruction of update start by a user operation on the update target list screen. When receiving the instruction, the reception control unit 21 starts downloading the update file of the software to be updated from the server 1.

When there are a plurality of update files to be downloaded, the reception control unit 21 transmits at least one transmission request to each file to download the file. In the file download process, the reception control unit 21 transmits a file transmission request to the server 1 and receives a target file from the server 1 as a response to the file transmission request. The file transmission request includes, for example, a file name to be downloaded and a section designation to be downloaded.

  When the restoration program portion of the self-restoration format file to be downloaded is not stored in the restoration program partial storage unit 24, the reception control unit 21 downloads the entire self-restoration format file from the server 1. In this case, the file transmission request does not include the section designation. The reception control unit 21 stores the downloaded self-restoration format file in the reception file storage unit 22. The reception control unit 21 also outputs an instruction to the restoration program partial extraction unit 23 to extract the restoration program portion from the downloaded self-restoration format file.

  When the restoration program portion of the self-restoration format file to be downloaded is stored in the restoration program portion storage unit 24, the reception control unit 21 determines the storage location of the restoration program portion of the self-restoration format file from the file configuration information. Acquire and download compressed data from the server 1. In this case, the file transmission request includes section designation of the compressed data portion. When the storage position of the decompression program portion is not at the beginning or end of the file and the compressed data portion is divided by the decompression program portion into a plurality, the file transmission request is transmitted for each compressed data portion. The reception control unit 21 stores the downloaded compressed data portion of the target self-restoration format file in the temporary storage unit 29. Further, the reception control unit 21 outputs, to the reception data combining unit 25, an instruction to combine the compressed data portion and the restoration program portion. The reception control unit 21 is an example of a “control unit”.

  The temporary storage unit 29 is, for example, a storage area used as a shared memory in the main storage device 102 secured for the temporary storage unit 29. The temporary storage unit 29 temporarily stores the file configuration information and the downloaded compressed data portion of the self-restoration format file. The file update information is deleted from the temporary storage unit 29 when the download of the file to be downloaded is completed. The primary storage unit 29 is an example of a “second storage unit”.

  The reception file storage unit 22 holds the downloaded self-restoration format file. The received file storage unit 22 is, for example, a part of a storage area secured for the update file download control program in the auxiliary storage device of the client terminal 2.

  In response to the instruction from the reception control unit 21, the restoration program partial extraction unit 23 extracts a restoration program portion from the self-restoration format file stored in the reception file storage unit 22 designated by the instruction. The restoration program portion of the self-restoration format file is acquired from file configuration information whose file name matches the file name designated by the reception control unit 21. The restoration program partial extraction unit 23 stores the restoration program portion extracted from the self-restoration format file in the restoration program partial storage unit 24. The restoration program partial extraction unit 23 is an example of the “extraction unit”.

  The restoration program partial storage unit 24 holds the restoration program part extracted from the self-restoration format file. The restoration program partial storage unit 24 is, for example, a part of the storage area secured for the update file download control program in the auxiliary storage device of the client terminal 2, or the storage location of the update file (self restoration format file) by the user. Storage area of the auxiliary storage device of the client terminal 2 designated as. The restoration program partial storage unit 24 is an example of the “storage unit”.

The reception data combining unit 25 receives an input of an instruction for combining the restored program portion and the compressed data portion from the reception control unit 21. The reception data combining unit 25 acquires, for example, a compressed data portion corresponding to the designated file name from the temporary storage unit 29. For example, based on the file configuration information in which the file name matches the specified file name, the reception data combining unit 25 extracts the restoration program portion corresponding to the compressed data portion of the specified file name from the restoration program partial storage unit 24. get.

  The reception data combining unit 25 stores the recovery program portion acquired from the recovery program portion storage unit 24 at the storage position of the recovery program portion according to the file configuration information, and combines with the compressed data portion read from the temporary storage unit 29. To obtain a self-restoring file.

  The reception data combining unit 25 notifies the reception control unit 21 of the result of acquisition of the self-restoration format file. The acquisition of the self-restoration type file fails, for example, in the following cases. For example, there is a case where no restoration program part is stored in the restoration program part storage unit 24. For example, the file configuration information in the temporary storage unit 29 does not include file configuration information whose file name matches the designated file name. For example, the size of the restoration program portion indicated by the file configuration information corresponding to the designated file name does not match the size of the restoration program portion acquired from the restoration program portion storage unit 24.

  The reception data combining unit 25 stores the acquired self-restoration format file in the reception file storage unit 22. The reception data combining unit 25 is an example of an “acquisition unit”.

  The file restoration unit 26 and the software package storage unit 27 are functional components achieved by, for example, the CPU of the client terminal 2 executing a restoration program for restoring a self-restoration type file.

  For example, the file restoration unit 26 includes a restoration program included in the restoration program portion of the designated self-restoration type file in the reception file storage unit 22 according to an instruction from the reception control unit 21 or an instruction input by the user operation. Execute to get the software package from the compressed data part. The file restoration unit 26 stores the acquired software package in the software package storage unit 27.

  The software package storage unit 27 holds the software package. The software package storage unit 27 is, for example, a part of a storage area secured for a restoration program of a self-restoration type file in the auxiliary storage device of the client terminal 2, or a client designated as a storage location of a software package by the user. It is a storage area in the auxiliary storage device of the terminal 2.

  The installation unit 28 is a functional component achieved by, for example, the CPU of the client terminal 2 executing a software installation program. The installation unit 28 installs the software package in the software package storage unit 27 according to, for example, an instruction from the reception control unit 21 or an instruction input by a user operation.

  The self-restoration format file stored in the received file storage unit 22 may be deleted by the file restoration unit 26, for example, when the restored software package is stored in the software package storage unit 27. The restoration program portion stored in the restoration program portion storage unit 24 may be deleted by the reception control unit 21, for example, when the process relating to batch downloading is completed. The software package stored in the software package storage unit 27 may be deleted by the installation unit 28, for example, when the installation of the software package is completed.

FIG. 7 is an example of the update target list screen of the client terminal 2. For example, the update target list screen is a screen displayed on the display of the client terminal 2 when the update file download control program is activated by a user operation.

  In the update target list screen, a list of software that can be updated according to the execution environment information of the client terminal 2 is displayed. The software displayed on the update target list screen is, for example, software extracted as a result of version comparison and release date comparison between the software held by the server 1 and the software held by the client terminal 2. In any comparison, when the information of the software held by the server 1 is newer than the information of the software held by the client terminal 2, the software is selected as the software displayed on the update target list screen. Note that information on all software notified from the server 1 may be displayed on the update target list screen.

  In the update target list screen, check boxes are arranged corresponding to the software names to be displayed, and the user can select the software desired to be updated by checking the check boxes by operation.

  Further, the update target list screen includes an update start button B1. For example, when the update start button B1 is pressed by the user's operation, download for the update file of software whose check box is checked is started.

  Note that processing from downloading to installation of the software update file may be performed by pressing the update start button B1. In this case, the reception control unit 21 instructs the file restoration unit 26 to perform the restoration process of the self-restoration format file and the installation process to the installation unit 28.

  Alternatively, the download of the software update file may be executed by pressing the update start button B1. In this case, for example, by the user's operation of selecting the target file, an instruction to restore the file of the self-restoration type to the file restoration unit 26 and an instruction to install the installation unit 28 are issued. The user operation of selecting the target file is, for example, an operation of double-clicking the icon of the target file.

  For example, when the icon of the self-restoration format file stored in the user-specified storage location displayed on the display is double-clicked, an instruction of the self-restoration format file restoration processing is input to the file restoration unit 26; A software package is obtained. For example, when the icon of the executable file in the software package (folder) stored in the user-specified storage location displayed on the display is double-clicked, an instruction to install the software package is input to the installing unit 28 And the software package is installed.

  Alternatively, when the update start button B1 is pressed, the download of the software update file may be executed, and after downloading, a screen may be displayed asking the user whether to install the update file of the software. In this case, for example, control of a screen inquiring whether or not installation can be performed is performed by the reception control unit 21 (updated file download control program). Therefore, in this case, the reception control unit 21 instructs the file restoration unit 26 to perform the restoration process of the self-restoration format file and the installation process to the installation unit 28 according to the input of the user operation instructing to execute the installation. Is done by

<Flow of processing>
FIG. 8 is an example of a flowchart of processing of the server 1 according to the first embodiment. The process shown in FIG. 8 is started, for example, when the server 1 receives a transmission request from the client terminal 2. Although the execution subject of the process shown in FIG. 8 is the CPU 101 of the server 1, for convenience, the transmission control unit 17 which is a functional configuration achieved by executing the file distribution program 105P is mainly described. Ru.

  In OP1, the transmission control unit 17 determines whether the received transmission request is a list request of software to be updated. If the received transmission request is a list request of software to be updated (OP1: YES), the process proceeds to OP2. If the received transmission request is not a list request of software to be updated (OP1: NO), the process proceeds to OP4.

  The processes of OP2 and OP3 are processes when a list request of software to be updated is received. In OP2, the transmission control unit 17 acquires, for example, list information of software corresponding to the execution environment information of the client terminal 2 and file configuration information of an update file of the software from the file configuration information storage unit 16. The software list information includes, for example, a software name and software update information. The software update information includes, for example, information indicating the software update date and time, the version of the software, and the like. The execution environment information of the client terminal 2 is included in the list request of software to be updated.

  In OP3, the transmission control unit 17 transmits, to the client terminal 2, software list information according to the execution environment information of the client terminal 2 and file configuration information of the update file of the software. Thereafter, the process shown in FIG. 8 ends.

  In OP4, the transmission control unit 17 determines whether the received transmission request is a file transmission request. If the received transmission request is a file transmission request (OP4: YES), the process proceeds to OP5. If the received transmission request is not a file transmission request (OP4: NO), the processing shown in FIG. 8 ends.

  The processing after OP5 is processing when a file transmission request is received. In OP5, the transmission control unit 17 determines whether or not the transmission file storage unit 14 stores a self-restoration format file corresponding to the file of the file transmission request target. If the corresponding self-restoration format file is stored in the transmission file storage unit 14 (OP5: YES), the process proceeds to OP6. When the corresponding self-restoration format file is not stored in the transmission file storage unit 14 (OP5: NO), the transmission control unit 17 determines the transmission of the software package corresponding to the file of the file transmission request target. Processing proceeds to OP9.

  The processing of OP6 to OP8 is processing of transmitting a self-restoration format file corresponding to the file of the target of the file transmission request. In OP6, the transmission control unit 17 determines whether the file transmission request includes a section designation. If the file transmission request includes a section designation (OP6: YES), the process proceeds to OP7. If the file transmission request does not include the section designation (OP6: NO), the process proceeds to OP8.

  In OP7, the transmission control unit 17 reads the section corresponding to the section specification included in the file transmission request of the corresponding self-restoration format file from the transmission file storage section 14 and transmits the section to the client terminal 2. Thereafter, the process shown in FIG. 8 ends.

  In OP8, the transmission control unit 17 reads the self-restoration format file corresponding to the target file of the file transmission request from the transmission file storage unit 14 and transmits the file to the client terminal 2. Thereafter, the process shown in FIG. 8 ends.

  The processes of OP9 to OP11 are processes of transmitting the software package corresponding to the target file of the file transmission request. At OP9, the transmission control unit 17 determines whether or not the file transmission request includes a section designation. If the file transmission request includes a section designation (OP9: YES), the process proceeds to OP10. If the file transmission request does not include the section designation (OP9: NO), the process proceeds to OP11.

  In OP10, the transmission control unit 17 reads the section corresponding to the section specification included in the file transmission request of the software package corresponding to the file of the file transmission request target from the software package storage unit 12, and transmits the section to the client terminal 2. Thereafter, the process shown in FIG. 8 ends.

  In OP11, the transmission control unit 17 reads the software package corresponding to the target file of the file transmission request from the software package storage unit 12 and transmits the software package to the client terminal 2. Thereafter, the process shown in FIG. 8 ends.

  FIG. 9A, FIG. 9B, and FIG. 9C are an example of the flowchart of a process of the client terminal 2 which concerns on 1st Embodiment. The process shown in FIG. 9A is started when the update software download control program is started. Although the execution subject of the processing shown in FIGS. 9A to 9C is the CPU of the client terminal 2, reception is a functional component achieved by executing the update software download control program by the CPU of the client terminal 2 for convenience. The control unit 21 is mainly described.

  In OP21, the reception control unit 21 acquires execution environment information of the client terminal 2. The execution environment information is acquired, for example, by querying the OS.

  In OP22, the reception control unit 21 transmits, to the server 1, a list request of software to be updated. The list request of software to be updated includes the execution environment information of the client terminal 2 acquired in OP21.

  In OP23, the reception control unit 21 determines whether or not list information of software to be updated according to the execution environment information of the client terminal 2 and file configuration information of an update file of the software are received from the server 1 Do. When the list information of software to be updated and the file configuration information of the update file of the software are received from the server 1 (OP23: YES), the reception control unit 21 receives the file of the received update file of the software The configuration information is stored in temporary storage unit 29. The process proceeds to OP24. When the list information of software to be updated and the file configuration information of the update file of the software are not received from the server 1 (OP23: NO), for example, an error occurs and the process shown in FIG. 9A ends.

  In OP24, the reception control unit 21 determines whether or not the software list information is included in the list information of the software to be updated received from the server 1. If the software 1 is included in the list information of software to be updated from the server 1 (OP24: YES), the process proceeds to OP25. When software information is not included in the list information of software to be updated received from the server 1 (OP24: NO), the process shown in FIG. 9A ends.

  In OP25, the reception control unit 21 extracts an update file of software that can be updated from the list information of software to be updated from the server 1. For example, among the list information of software to be updated received from the server 1, information of software already updated in the client terminal 2 is excluded.

  In OP26, the reception control unit 21 causes the display to display the update target list screen. The update target list screen includes the software names of the updatable software extracted in OP25.

  In OP27, the reception control unit 21 waits for the input of the update start instruction by the user operation. When the user operation of the update start instruction is input (OP27: YES), the process proceeds to OP28 of FIG. 9B. For example, when the user operation of stopping the update software download control program is input (OP27: NO) while the user operation of the update start instruction is not input, the process shown in FIG. 9A ends. The user operation of stopping the update software download control program is, for example, an operation of closing the update target list screen.

  In OP28 of FIG. 9B, the reception control unit 21 determines whether the restoration program portion of the self-restoration format file, which is the update file of the software to be updated selected by the user, has been acquired. The self-restoration format file, which is an update file of software to be updated, is hereinafter referred to as a self-restoration format file to be downloaded.

  For example, if the program name of the created program matches the self-restoration type file of the download target and the self-restoration type file of the extraction source of the restoration program portion stored in the restoration program portion storage unit 24, It is determined that the restoration program portion of the self-restoration format file has been acquired. The program name of the self-restoration file creation program is obtained from the file configuration information of the self-restoration format file.

  If the restoration program portion of the self-restoration format file to be downloaded has been acquired (OP28: YES), the process proceeds to OP34 of FIG. 9C. If the restoration program portion of the self-restoration format file to be downloaded has not been acquired (OP28: NO), the process proceeds to OP29.

  In OP29, the reception control unit 21 transmits a file transmission request for the download target self-restoration type file to the server 1. A section designation is not included in the file transmission request transmitted in OP29. The file transmission request transmitted in OP29 requests transmission of the entire file including the restoration program portion of the self-restoration type file to be downloaded and the compressed data portion.

  In OP30, the reception control unit 21 determines whether a self-restoration type file to be downloaded has been received. If the download target self-restoration format file is received (OP30: YES), the process proceeds to OP31. If the download target self-restoration type file is not received (OP30: NO), the reception control unit 21 waits, for example, until the download target self-restoration type file is received.

  In OP31, the reception control unit 21 stores the received self-restoration format file in the reception file storage unit 22. In OP32, the reception control unit 21 instructs the restoration program partial extraction unit 23 to extract the restoration program part from the received self-restoration format file. As a result, the restoration program portion is extracted from the self-restoration format file received in OP30, and the extracted restoration program portion is stored in the restoration program portion storage unit 24. The storage position of the restoration program portion of the received self-restoration format file is obtained from the file configuration information of the received self-restoration format file.

In OP33, the reception control unit 21 determines whether there is a self-restoration type file to be downloaded next, that is, the software to be updated next. If there is a self-restoration type file to be downloaded next (OP33: YES), the process proceeds to OP28, and the processing from OP28 is repeatedly executed for the next file to be downloaded. If there is no self-restoration type file to be downloaded next (OP33: NO), the processing shown in FIG. 9B ends.

  The process shown in FIG. 9C is a process when the restoration program portion of the self-restoration format file to be downloaded has been acquired. In OP34, the reception control unit 21 acquires the section of the compressed data portion of the self-restoration format file to be downloaded from the file configuration information of the self-restoration format file to be downloaded.

  In OP35, the reception control unit 21 transmits, to the server 1, a file transmission request for one section of the compressed data portion of the self-restoration type file to be downloaded. The file transmission request transmitted in OP35 includes a section specification that specifies one section of the compressed data portion of the self-restoration format file to be downloaded.

  In OP36, the reception control unit 21 determines whether or not the data of the section targeted for the file transmission request transmitted in OP35 is received. When the data of the section of the target of the file transmission request transmitted in OP35 is received (OP36: YES), the reception control unit 21 stores the data of the received section in the temporary storage unit 29, and the processing is OP37 Go to If the data of the section targeted for the file transmission request transmitted in OP35 is not received (OP36: NO), the reception control unit 21 waits until the data of the section is received.

  In OP37, the reception control unit 21 determines whether or not there is a section to which a transmission request is to be made next in the compressed data portion of the self-restoration type file to be downloaded. For example, if the decompressed program portion exists at other than the head or the end of the self-restructing format file, a plurality of compressed data portions exist, so the determination of OP37 becomes YES. If there is a section to which a transmission request is made next in the compressed data portion of the self-restoration format file to be downloaded (OP37: YES), the process proceeds to OP35 and OP35 for the section of the next compressed data portion. Processing from is performed.

  If there is no section to which a transmission request is made next in the compressed data portion of the self-restoration format file to be downloaded (OP37: NO), the process proceeds to OP38.

  In OP38, the reception control unit 21 instructs the reception data combining unit 25 to combine the compressed data portion of the received self-restoration type file with the corresponding restoration program portion. In response to the instruction from the reception control unit 21, the reception data combining unit 25 reads the compressed data portion of the designated self-restoration format file from the temporary storage unit 29, and the restoration program portion corresponding to the compression data portion is restored It reads from the partial storage unit 24 and combines the compressed data portion and the decompression program portion to obtain a self-restoration format file. The received data combining unit 25 is, for example, a restored program partial storage unit in which the self-restoration format file including the compressed data portion of the designated self-restoration format file matches the program name of the creation source program based on the file configuration information By specifying the self-restoration type file including the restoration program portion stored in 24, the restoration program portion corresponding to the compressed data portion of the designated self-restoration type file is specified.

  In OP39, the reception control unit 21 determines whether the creation of the self-restoration type file is successful. The success or failure of creation of the self-restoration type file is input from the reception data combining unit 25 to the reception control unit 21. If the creation of the self-restoration type file is successful (OP39: YES), the process proceeds to OP42. If creation of the self-restoration type file fails (OP39: NO), the process proceeds to OP40.

  In OP40, since creation of the self-restoration format file has failed, the reception control unit 21 transmits a file transmission request to the server 1 for the software package corresponding to the self-restoration format file to be downloaded. In OP <b> 41, the reception control unit 21 stores the software package received from the server 1 in the reception file storage unit 22.

  In OP42, the reception control unit 21 determines whether there is a self-restoration type file to be downloaded next, that is, the software to be updated next. If there is a self-restoration type file to be downloaded next (OP42: YES), the process proceeds to OP28 in FIG. 9B, and the processing from OP28 in FIG. 9B is repeatedly executed for the next download target file. . If there is no self-restoration type file to be downloaded next (OP42: NO), the processing shown in FIG. 9C ends.

  FIG. 10 is a diagram showing an example of a processing sequence between the server 1 and the client terminal 2 in the software distribution system 100 according to the first embodiment. As a precondition of the example shown in FIG. 10, it is assumed that the client terminal 2 does not hold any restoration program part.

  In S1, the client terminal 2 receives an input of an instruction to display a list of software to be updated, by activating the update software download control program by user operation. At S2, the client terminal 2 transmits a list request of software to be updated to the server 1 (FIG. 9A, OP22).

  In S3, the server 1 receives a list request of software to be updated from the client terminal 2 (FIG. 8, OP1: YES), and list information of update software and file configuration information according to the execution environment information of the client terminal 2 Are transmitted to the client terminal 2 (FIG. 8, OP3). For example, it is assumed that the list information of the updated software transmitted from the server 1 in S3 includes the software names of the software A to G. Further, it is assumed that the file configuration information transmitted from the server 1 in S3 includes the program X as the creation source program of the software A to F and the program Y as the creation source program of the software G.

  In S4, the client terminal 2 displays a list of software that can be updated from the list information of the updated software received from the server 1 on the update target list screen (FIG. 9A, OP26). At S5, the client terminal 2 receives an input of an update start instruction (FIG. 9A, OP27: YES). For example, it is assumed that software A to G is displayed on the update target list screen, and software A to G is selected as the update target by the user.

  In S6, the client terminal 2 transmits a file transmission request for the update file of the software A as the first download target to the server 1. Since the client terminal 2 does not hold any restoration program part, the file transmission request transmitted in S6 does not include the section designation and requests the entire update file of software A (FIG. 9B). , OP28: NO, OP29).

  In S7, the server 1 receives a file transmission request for the update file of software A from the client terminal 2 (FIG. 8, OP4: YES), and transmits the update file of software A to the client terminal 2 (FIG. 8, OP6: NO, OP8).

In S8, the client terminal 2 receives the update file of the software A (FIG. 9B, OP30: YES), and extracts the restoration program portion from the update file of the software A (FIG. 9B, OP32).

  In S9, the client terminal 2 transmits a file transmission request for the update file of the software B to the server 1 as the second download target. The client terminal 2 holds the restoration program portion of the software A, and both the software A and the software B are the program X which is the creation source of the self-restoration format file. Therefore, the file transmission request transmitted in S9 includes section designation for the compressed data portion of the software B (FIG. 9B, OP28: YES, FIG. 9C, OP35).

  In S10, the server 1 receives a file transmission request for the update file of software B from the client terminal 2 (FIG. 8, OP4: YES), and transmits the compressed data portion of the designated software B to the client terminal 2 (FIG. 8, OP6: YES, OP7).

  In S11, the client terminal 2 combines the compressed data portion of the software B received from the server 1 and the restoration program portion of the held software A to obtain an update file of the software B (FIG. 9C, OP38) ).

  In S12, the client terminal 2 transmits a file transmission request for the update file of the software C to the server 1 as the next download target. The file transmission request transmitted in S12 includes section designation for the compressed data portion of the software C (FIG. 9B, OP28: YES, FIG. 9C, OP35). Thereafter, the same processes as S9 to S11 are performed on the software C to F.

  In S13, the client terminal 2 transmits a file transmission request for the update file of the software G as a download target to the server 1. The client terminal 2 holds a restoration program portion of software A. However, the creation program of the creation source of the self-restoration format file of software A is program X, and the creation program of the creation source of the self-restoration format file of software G is program Y. Therefore, the client terminal 2 does not hold the restoration program portion corresponding to the self-restoration type file of the software G. The file transmission request transmitted in S13 does not include the section designation, and requests the entire update file of software C (FIG. 9B, OP28: NO, OP29).

  In S14, the server 1 receives a file transmission request for the update file of software G from the client terminal 2 (FIG. 8, OP4: YES), and transmits the update file of software G to the client terminal 2 (FIG. 8, OP6: NO, OP8).

  At S15, the client terminal 2 receives the update file of the software G (FIG. 9B, OP30: YES), and extracts the restoration program portion from the update file of the software G (FIG. 9B, OP32). Since the software G is the last software to be updated, the process of downloading the update file of the software to be updated of the client terminal 2 ends. Thereafter, in each of the software A to G, the self-restoration type file is restored to the software package, and the software package is installed and updated.

<Operation and effect of the first embodiment>
In the first embodiment, when the restoration program portion of the self-restoration format file to be downloaded is held in the restoration program partial storage unit 24, the client terminal 2 selects the compressed data portion of the self-restoration format file to be downloaded to download. By this, it is possible to omit the download of the redundant restoration program part, and it is possible to reduce the amount of communication related to the download of the self-restoration type file.

  In the first embodiment, when the restoration program portion of the self-restoration format file to be downloaded is not held in the restoration program portion storage unit 24, the client terminal 2 restores the self-restoration format file as the restoration program portion. Download including. The client terminal 2 extracts the restoration program portion from the downloaded self-restoration format file, and holds it in the restoration program portion storage unit 24. Thus, even when the client terminal 2 does not hold the restoration program part, the restoration program part can be acquired from the downloaded self-restoration file. In addition, it is possible to omit downloading of the restoration program portion of the self-restoration format file created by the same program as the self-restoration format file creation source program downloaded after the self-restoration format file. It is possible to reduce the amount of communication related to downloading.

  In the first embodiment, the client terminal 2 acquires file configuration information from the server 1. The file configuration information includes, for example, the program name of the creation program of the creation source of the self-restoration format file, and information indicating the storage location of the restoration program portion. Even when the storage locations of the restoration program portions of the plurality of self-restoration format files to be downloaded are different for each file depending on the file configuration information, if the corresponding restoration program portions are held, The download of the restoration program portion can be omitted. Also, even if the program names of the creation programs of the creation sources of the plurality of self-restoration format files to be downloaded are different depending on the file configuration information, the restoration of the self-restoration format files of the same creation source creation program It can be determined whether the program part has been acquired.

  In the first embodiment, the client terminal 2 can download the self-restoration type file excluding the restoration program portion of the self-restoration type file by including the section designation in the file transmission request.

  Further, in the first embodiment, since it is determined whether the client terminal 2 downloads the self-restoration format file or the compressed data part, the processing load of the server 1 related to the processing of the transmission request of the self-restoration format file The increase can be suppressed.

  Further, in the first embodiment, the server 1 generates and stores the compressed data portion, the self-restoration type file, and the file configuration information before the transmission request for the self-restoration type file is generated. As a result, the process of generating the compressed data portion, the self-restoration format file, and the file configuration information does not have to be performed when the transmission request for the self-restoration format file is generated, and the processing for the transmission request for the self-restoration format file An increase in processing load of the server 1 can be suppressed.

Second Embodiment
In the first embodiment, it is determined whether the client terminal 2 downloads the self-restoration type file or whether to download the compressed data portion of the self-restoration type file. In the second embodiment, the server 1 determines whether to download the self-restoration type file or to download the compressed data portion of the self-restoration type file. In the second embodiment, the description common to the first embodiment is omitted.

  In the second embodiment, the system configuration of the software distribution system 100 and the hardware configuration and functional configuration of the server 1 and the client terminal 2 are the same as those in the first embodiment. In the second embodiment, processing of the transmission control unit 17 of the server 1 and the reception control unit 21 of the client terminal 2 is different from that of the first embodiment.

  In the second embodiment, when downloading the self-restoration type file, the reception control unit 21 of the client terminal 2 does not determine whether the restoration program portion of the self-restoration type file has already been acquired. In the second embodiment, any file transmission request transmitted when the reception control unit 21 of the client terminal 2 downloads a self-restoration format file does not include a section designation. Details of the process of the reception control unit 21 of the client terminal 2 according to the second embodiment will be described later.

  In the second embodiment, when transmitting the self-restoration type file to the client terminal 2, the transmission control unit 17 of the server 1 determines whether or not the restoration program portion of the transmission target self-restoration type file has been transmitted. Do. If the restoration program portion of the transmission target self-restoration format file has not been transmitted, the transmission control unit 17 of the server 1 transmits the entire transmission target self-restoration format file to the client terminal 2. When the restoration program portion of the transmission target self-restoration format file has been transmitted, the transmission control unit 17 of the server 1 transmits the compressed data portion of the transmission target self-restoration format file to the client terminal 2. Details of processing of the transmission control unit 17 of the server 1 according to the second embodiment will be described later.

  In the second embodiment, the file configuration information includes the size of the self-restoration format file in addition to the file name, the program name of the creation program of the creation source, and the storage position of the restoration program portion. By including the size of the self-restoration format file in the file configuration information, the client terminal 2 determines whether the self-restoration format file received from the server 1 is the entire self-restoration format file or a compressed data portion. can do.

  FIG. 11 is an example of a flowchart of processing of the server 1 according to the second embodiment. The process shown in FIG. 11 is started, for example, when the server 1 receives a transmission request from the client terminal 2. Although the execution subject of the process shown in FIG. 11 is the CPU 101 of the server 1, for convenience, the transmission control unit 17 which is a functional configuration achieved by executing the file delivery program 105P is mainly described. Ru.

  The processes of OP51 to OP55 are the same as the processes of OP1 to OP3 of FIG. If the received transmission request is a list request of software to be updated (OP51: YES), the transmission control unit 17 may, for example, list information on software according to execution environment information of the client terminal 2 and the software The file configuration information of the update file is acquired from the file configuration information storage unit 16 (OP52), and transmitted to the client terminal 2 (OP53).

  If the received transmission request is a file transmission request to be updated (OP 54: YES), and the self-restoration format file corresponding to the file name included in the file transmission request is stored in the transmission file storage unit 14 ( OP55: YES), the process proceeds to OP57. When the corresponding self-restoration format file is not stored in the transmission file storage unit 14 (OP55: NO), the transmission control unit 17 determines transmission of the software package corresponding to the file name included in the file transmission request. Then, the process proceeds to OP56.

  In OP56, the transmission control unit 17 reads the software package corresponding to the file name included in the file transmission request from the software package storage unit 12, and transmits the software package to the client terminal 2. Thereafter, the process shown in FIG. 11 ends.

The processing of OP 57 to OP 60 is processing in the case of transmitting a self-restoration format file corresponding to the file of the target of the file transmission request. In OP57, the transmission control unit 17 determines whether or not the restoration program portion of the self-restoration format file corresponding to the target file of the file transmission request has been transmitted. For example, the transmission control unit 17 records the file configuration information of the self-restoration type file transmitted to the client terminal 2 in the shared memory in the main storage device 102. When the file configuration information in the shared memory includes file configuration information whose program name matches the program name of the creation program of the creation source of the self-restoration format file to be transmitted, the self-restoration format file to be transmission It is determined that the restoration program portion of has been sent.

  If the restoration program portion of the self-restoration format file corresponding to the target file of the file transmission request has already been transmitted (OP57: YES), the process proceeds to OP58. If the restoration program portion of the self-restoration format file corresponding to the file of the file transmission request target has not been transmitted (OP57: NO), the process proceeds to OP59.

  In OP 58, the transmission control unit 17 reads the compressed data portion of the self-restoration format file to be transmitted from the transmission file storage unit 14, and transmits it to the client terminal 2. When the compressed data portion is divided into a plurality of sections, the process of OP58 is performed a plurality of times.

  In OP59, the transmission control unit 17 reads the self-restoration format file corresponding to the target file of the file transmission request from the transmission file storage unit 14 and transmits the file to the client terminal 2.

  In OP60, the transmission control unit 17 records the file configuration information of the self-restoration type file transmitted in OP58 or OP59 in the shared memory. Thereafter, the process shown in FIG. 11 ends. The file configuration information in the shared memory is deleted after a predetermined time has elapsed after the transmission of the file to the client terminal 2 is completed.

  12A and 12B are an example of a flowchart of processing of the client terminal 2 according to the second embodiment. The process shown in FIGS. 12A and 12B is a process executed in place of FIGS. 9B and 9C following the process shown in FIG. 9A in the second embodiment. That is, also in the second embodiment, the process shown in FIG. 9A is performed. Although the execution subject of the processing shown in FIGS. 12A and 12B is the CPU of the client terminal 2, reception is a functional component achieved by executing the update software download control program by the CPU of the client terminal 2 for convenience. The control unit 21 is mainly described.

  In OP71, the reception control unit 21 transmits a file transmission request to the server 1 for a self-restoration format file that is an update file of software to be updated. The self-restoration format file, which is an update file of software to be updated, is hereinafter referred to as a self-restoration format file to be downloaded.

  In OP72, the reception control unit 21 determines whether data as a response to the file transmission request transmitted in OP71 is received. If data as a response to the file transmission request is received (OP72: YES), the process proceeds to OP73. If data as a response to the file transmission request is not received (OP72: NO), the reception control unit 21 waits until data as a response to the file transmission request is received.

  In OP73, the reception control unit 21 determines whether the data received from the server 1 is the entire self-restoration format file. For example, when the size of the self-restoration format file to be downloaded matches the size of the data received from the server 1, the transmission control unit 17 determines that the data received from the server 1 is the entire self-restoration format file. Determine The size of the self-restoration file to be downloaded is obtained from the file configuration information.

  If the data received from the server 1 is the entire self-restoration format file (OP73: YES), the process proceeds to OP74. If the data received from the server 1 is not the entire self-restoration format file (OP73: NO), the data received from the server 1 is determined to be a compressed data portion, and the process proceeds to OP77 of FIG. 12B.

  In OP74, the reception control unit 21 stores the received self-restoration format file in the reception file storage unit 22. In OP75, the reception control unit 21 instructs the restoration program partial extraction unit 23 to extract the restoration program part from the received self-restoration format file. As a result, the restoration program portion is extracted from the self-restoration format file received in OP 73, and the extracted restoration program portion is stored in the restoration program portion storage unit 24. The storage position of the restoration program portion of the received self-restoration format file is obtained from the file configuration information of the received self-restoration format file.

  In OP76, the reception control unit 21 determines whether there is a self-restoration type file to be downloaded next, that is, software to be updated next. If there is a self-restoration type file to be downloaded next (OP 76: YES), the process proceeds to OP 71, and the processing from OP 71 is repeatedly executed for the next file to be downloaded. If there is no self-restoration type file to be downloaded next (OP 76: NO), the processing shown in FIG. 12A ends.

  The process shown in FIG. 12B is a process when the compressed data portion of the self-restoration type file to be downloaded is received from the server 1. In OP77, the reception control unit 21 determines whether or not there is a section of the next compressed data portion in the download target self-restoration format file. For example, if the total value of the compressed data portion and the restoration program portion of the download target self-restoration format file received from the server 1 does not reach the size of the download target self-restoration format file, the reception control unit 21 It is determined that there is a section of the compressed data portion of

  If there is a section of the next compressed data portion in the download target self-restoration format file (OP77: YES), the process proceeds to OP72 of FIG. 12A. If there is no section of the next compressed data portion in the download target self-restoration format file (OP77: NO), the process proceeds to OP78.

  In OP78, the reception control unit 21 instructs the reception data combining unit 25 to combine the compressed data portion of the received self-restoration type file with the corresponding restoration program portion. In response to the instruction from the reception control unit 21, the reception data combining unit 25 reads the corresponding compressed data portion from the temporary storage unit 29, and reads the restoration program portion corresponding to the compression data portion from the restoration program portion storage unit 24. And combining the compressed data portion and the decompressed program portion to obtain a self-retracting format file.

  In OP79, the reception control unit 21 determines whether the creation of the self-restoration type file is successful. The success or failure of creation of the self-restoration type file is input from the reception data combining unit 25 to the reception control unit 21. If the creation of the self-restoration type file is successful (OP79: YES), the process proceeds to OP82. If creation of the self-restoration type file fails (OP79: NO), the process proceeds to OP80.

  In OP80, the reception control unit 21 transmits a file transmission request to the server 1 for the software package corresponding to the self-restoration type file to be downloaded because creation of the self-restoration type file has failed. In OP81, the reception control unit 21 stores the software package received from the server 1 in the reception file storage unit 22.

  In OP82, the reception control unit 21 determines whether there is a self-restoration type file to be downloaded next, that is, software to be updated next. If there is a self-restoration format file to be downloaded next (OP 82: YES), the process proceeds to OP 71 in FIG. 12A, and the processing from OP 71 in FIG. 12A is repeatedly executed for the next download target file. . If there is no self-restoration type file to be downloaded next (OP 82: NO), the processing shown in FIG. 12B ends.

<Operation and effect of the second embodiment>
In the second embodiment, it is determined whether the server 1 transmits the entire file of the self-restoration format file to be transmitted or transmits the compressed data portion. If the restoration program portion of the transmission target self-restoration format file has already been transmitted to the client terminal 2, the server 1 transmits the compressed data portion of the transmission target self-restoration format file. Therefore, according to the second embodiment, in the delivery of a plurality of self-restoration format files, it is possible to omit the transmission of duplicate restoration program parts, and reduce the amount of communication related to the delivery of a plurality of self-restoration format files. Can.

<Others>
In the first and second embodiments, the restoration program portion held by the client terminal 2 is extracted and acquired from the self-restoration format file downloaded from the server 1. However, the present invention is not limited to this, and the client terminal 2 may store, in advance, restoration program portions of a plurality of types of self-restoration format files. Alternatively, the client terminal 2 may transmit and acquire a transmission request for the restoration program portion to the server 1.

  The restoration program portion stored in the restoration program portion storage unit 24 of the client terminal 2 is deleted when the batch download processing is completed. In this case, the memory resources of the client terminal 2 can be suppressed. However, the present invention is not limited to this, even if the restoration program portion stored in the restoration program partial storage unit 24 of the client terminal 2 is held in the restoration program partial storage unit 24 even after the batch download processing is completed. Good. In this case, the file configuration information of the self-restoration format file including the restoration program portion stored in the restoration program partial storage unit 24 may be stored together. By this, it is possible to omit the process of downloading the entire self-restoration type file and extracting the restoration program portion in the next download processing.

  In the first and second embodiments, when the self-restoration type file includes data other than the restoration program portion and the compressed data portion, the data is transmitted together with the compressed data portion. Data other than the decompression program portion and the compressed data portion of the self decompression type file are, for example, an index of the file.

  In the first and second embodiments, the file configuration information is transmitted to the client terminal 2 together with the list information of software to be updated, but the method of acquiring the file configuration information of the client terminal 2 is not limited to this. . For example, the file configuration information is embedded at a predetermined position of the self-restoration format file, and the client terminal 2 may acquire the file configuration information from the predetermined position of the self-restoration format file. Also, for example, the file configuration information may be stored in the client terminal 2 in advance. Also, the file configuration information may not be acquired from the server 1 together with the list information of software to be updated, and may be requested and acquired to the server 1 every time a file transmission request is generated for the self-restoration format file. .

In addition, there is one type of program for creating a self-restoration format file used in the server 1, the program name of the creation program is known, and the restoration program in the self-restoration format file created by the creation program When the storage position of the part is known, the server 1 may not create the file configuration information. In this case, for example, the restoration program portion of the creation program of the self-restoration format file used in the server 1 and the storage position of the restoration program are stored in a predetermined storage area of the auxiliary storage device of the client terminal 2 You should save. In the case of the second embodiment, the storage location of the restoration program portion of the self-restoration format file creation program used in the server 1 is also stored in a predetermined storage area of the auxiliary storage device 105 of the server 1.

  In the first embodiment and the second embodiment, when the compression method of the compressed data portion is different from the compression method corresponding to the restored program portion acquired by the client terminal 2, the compressed data portion and the acquired restored program portion The self-restoration format file obtained by combining the two and fails to be restored. In this case, the file restoration unit 26 of the client terminal 2 notifies the reception control unit 21 of failure in restoration of the self-restoration format file, and the reception control unit 21 downloads the entire self-restoration format file from the server 1 You may By this, even when a compressed data portion created by a compression method different from the corresponding compression method is downloaded, the client terminal 2 acquires a self-restoration format file including the compressed data portion. Can.

  In the first embodiment and the second embodiment, it is assumed that the creation program of the self-restoration format file used by the server 1 has a common restoration program portion of the self-restoration format file created by the creation program. Explained. However, the present invention is not limited to this, and the creation program of the self-restoration format file used by the server 1 corresponds to a plurality of data compression methods, and a different restoration program portion is used according to the data compression method of the compressed data portion May be

  In this case, the file configuration information includes information on the compression method of the compressed data portion, in addition to the file name, the program name of the creation source program, and the storage position of the restoration program portion. For example, the reception control unit 21 of the client terminal 2 restores the self-restoration type file in which the self-restoration type file to be downloaded matches the program name of the program of the file configuration information creation source and the compression method of the compressed data portion. Is stored in the restoration program partial storage unit 24, it is determined whether the restoration program part of the self-restoration format file to be downloaded has been acquired.

<Processor>
In the above embodiment, the server 1 and the client terminal 2 have a CPU, and execute the processing described by executing an instruction expanded from a program in the main storage device. The CPU is also called an MPU (Microprocessor) or a processor. The CPU is not limited to a single processor, and may be a multiprocessor configuration. Also, a single CPU connected by a single socket may have a multi-core configuration. The processing of at least a part of the above-described units may be performed by a processor other than the CPU, for example, a dedicated processor such as a digital signal processor (DSP), a graphics processing unit (GPU), a numerical operation processor, a vector processor, or an image processing processor. good. Further, at least a part of the processing of each of the above-described units may be an integrated circuit (IC) or another digital circuit. In addition, at least a part of the respective units may include an analog circuit. Integrated circuits are LSIs, application specific integrated circuits (ASICs), programmable logic devices (PLDs)
)including. The PLD includes, for example, a field-programmable gate array (FPGA). Each of the units described above may be a combination of a processor and an integrated circuit. The combination is called, for example, a microcontroller (MCU), an SoC (System-on-a-chip), a system LSI, a chipset, or the like.

<Recording medium>
A program that causes a computer or other machine or device (hereinafter referred to as a computer or the like) to realize any of the functions described above can be recorded in a recording medium readable by the computer or the like. The functions can be provided by causing a computer or the like to read and execute the program of the recording medium.

Here, a recording medium readable by a computer etc. is a non-transitory information that can store information such as data and programs electrically, magnetically, optically, mechanically, or chemically and read from a computer etc. Recording media. Among such recording media, those removable from the computer etc. include, for example, memory such as flexible disk, magneto-optical disk, CD-ROM, CD-R / W, DVD, Blu-ray disk, DAT, 8 mm tape, flash memory etc. There is a card etc. Further, as a recording medium fixed to a computer or the like, there are a hard disk, a ROM (Read Only Memory), and the like. Furthermore, a solid state drive (SSD) can be used as a recording medium removable from a computer or the like, or as a recording medium fixed to the computer or the like.

Reference Signs List 1 server 2 client terminal 11 software package registration unit 12, 27 software package storage unit 13 file conversion unit 14 transmission file storage unit 15 file analysis unit 16 file configuration information storage unit 17 transmission control unit 21 reception control unit 22 reception file storage unit 23 Restoration program partial extraction unit 24 Restoration program partial storage unit 25 Reception data combining unit 26 File restoration unit 28 Installation unit 101 CPU
102 Main storage unit 103 Input unit 104 Output unit 105 Auxiliary storage unit 105 P File distribution program

Claims (9)

A storage unit for storing the decompression program portion included in a self-decompression type file including a compressed data portion compressed by a predetermined compression method and a decompression program portion for decompressing the compressed data portion;
A control unit for downloading excluding the restoration program portion in the self-restoration format file to be downloaded when the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit;
The self-restoration type file is obtained by combining the portion other than the restoration program portion of the downloaded self-restoration type file and the restoration program portion of the self-restoration type file to be downloaded stored in the storage unit. Acquisition department,
An information processing apparatus comprising: An extraction unit which extracts a restoration program portion from the downloaded self-restoration format file, and stores the extracted restoration program portion in the storage unit;
And further
When the restoration program portion of the self-restoration format file to be downloaded is not stored in the storage unit, the control unit downloads the self-restoration format file to be downloaded including the restoration program portion.
An information processing apparatus according to claim 1. A second storage unit storing file configuration information including information on a storage position of a restoration program portion for the download target self-restoration format file;
And further
The control unit, when the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit, the storage location of the restoration program portion in the self-restoration format file to be downloaded is the file configuration Acquired based on information, designating a section other than the storage position of the restoration program as a download target section, and downloading excluding the restoration program portion in the self-restoration format file of the download target,
The information processing apparatus according to claim 1 or 2. The second storage unit stores file configuration information for each of a plurality of self-restoration format files,
The file configuration information further includes identification information of a program that has created the self-restoration format file,
The control unit matches the identification information of the program that created the self-restoration format file to be downloaded with the identification information of the program that created the self-restoration format file including the restoration program stored in the storage unit And determining that the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit.
The information processing apparatus according to claim 3. The acquisition unit is a part other than the restoration program part of the downloaded self-restoration format file based on the file configuration information of the self-restoration format file to be downloaded, and the download target stored in the storage unit. Combine the self-restoration type file restoration program with the self-restoration type file, and
The information processing apparatus according to claim 3. Storing, in a storage unit, the restoration program part included in a self-restoration format file including a compressed data part compressed by a predetermined compression method and a restoration program part for restoring the compressed data part;
When the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit, downloading is performed excluding the restoration program portion in the self-restoration format file to be downloaded,
The self-restoration type file is obtained by combining the portion other than the restoration program portion of the downloaded self-restoration type file and the restoration program portion of the self-restoration type file to be downloaded stored in the storage unit. Do,
Information processing method. On the computer
Storing in the storage unit the decompression program portion included in a self decompression type file including a compressed data portion compressed by a predetermined compression method and a decompression program portion for decompressing the compressed data portion;
When the restoration program portion of the self-restoration format file to be downloaded is stored in the storage unit, downloading is performed excluding the restoration program portion in the self-restoration format file to be downloaded,
The self-restoration type file is obtained by combining the portion other than the restoration program portion of the downloaded self-restoration type file and the restoration program portion of the self-restoration type file to be downloaded stored in the storage unit. Let
Information processing program. A generation unit for generating a self-restoration format file including a compressed data portion compressed by a predetermined compression method and a restoration program portion for restoring the compressed data portion;
A storage unit storing file configuration information including information on the storage position of the restoration program portion of the self-restoration format file;
A transmitter for transmitting the file configuration information;
An information processing apparatus comprising: The transmitting unit transmits the self-restoration format file to be transmitted to the transmission destination excluding the restoration program portion, when the restoration program portion of the self-restoration format file to be transmitted has been transmitted to the transmission destination, 9. The self-restoration type file to be transmitted is transmitted to the transmission destination including the restoration program portion when the restoration program portion of the self-restoration type file to be transmitted has not been transmitted to the transmission destination. Information processing device.

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