JP6160427B2 - Difference extraction system and program - Google Patents

Description

  The present invention relates to a difference extraction system and a program.

  Patent Document 1 describes an MFP (Multi Function Peripheral) that generates history data when an image is formed on a recording medium and identifies the image based on the history data.

  Patent Document 2 describes a system for sharing updates and additions to electronic files among departments of an organization. In this system, when a request with a duplicate ID (management history information) is received from a user for an electronic file, the management server executes an operation indicated by the request and returns a new duplicate ID to the user. Then, a relationship in which the new duplicate ID is a child of the received duplicate ID is added to a derivation relationship tree which is tree structure data having the duplicate ID as a node. Further, when the management server receives a browse request with a duplicate ID from the user, the management server goes back from the duplicate ID to the derivation relationship tree (that is, goes back to the directly added node until the received duplicate ID). Provide the user with the electronic file registered in the found node.

Japanese Patent Laid-Open No. 2007-036406 JP 2008-003847 A

  An object of the present invention is to provide a difference extraction system and program capable of notifying a user of an electronic file associated with an electronic file selected by a user and selecting the user as a comparison partner when performing difference extraction. There is.

  In order to solve the above-mentioned object, the invention according to claim 1 is a file storage means for storing a plurality of electronic files, and a plurality of electronic files selected by a user among the electronic files stored in the file storage means. A means for associating a difference extracting means for extracting a difference and comparing each electronic file to be compared by the difference extracting means, and when an already-associated electronic file is compared, associate with the electronic file An association means for associating the selected electronic file with the electronic file of the comparison partner, and when the user selects the electronic file associated with the association means, the electronic file associated with the selected electronic file is Notification means for notifying, wherein the difference extraction means includes the selected electronic file and A difference extraction system for extracting a difference by comparing the electronic file selected by the user from among the notified electronic file by said notifying means.

  The invention according to claim 2 is the difference extraction system according to claim 1, wherein when the electronic files compared for the first time with other electronic files are compared with each other, the electronic files to be compared are stored. When the history information including identification information to be identified is generated and the electronic file associated with the history information is compared with the generation unit associated with each electronic file, the history information is associated with the electronic file of the comparison partner, Storage means for storing identification information for identifying the electronic file of the comparison partner in the history information, and the notification means includes the identification information stored in the history information associated with the selected electronic file. It is the difference extraction system which notifies the electronic file which shows.

  The invention according to claim 3 is the differential extraction system according to claim 2, wherein when the electronic file notified by the notification means is selected by the user, the electronic file is associated with the selected electronic file. The electronic file indicated by the identification information stored in the history information is further notified, and the difference extraction means is the electronic file selected by the user from the selected electronic file and the further notified electronic file. This is a difference extraction system that compares files and extracts differences.

  The invention according to claim 4 is the difference extraction system according to claim 2 or 3, wherein the storage means includes an electronic file associated with the history information by the generating means, and the like. Identification information for associating the history information with the electronic file to be compared for the first time and identifying the electronic file to be compared for the first time. Are compared with the electronic files associated with the history information by the generating means or the first means. If the history information is different from each other, the electronic files are associated with the compared electronic files. The history information is associated with the comparison partner electronic file, and identification information for identifying the comparison partner electronic file is stored in the history information. If the electronic file associated with the history information is compared by the second means and the history information is not associated with the electronic file of the comparison partner, the history information is converted into the electronic file of the comparison partner. A third means for associating, wherein the notifying means is stored in the history information associated by the generating means or the first means, among the history information associated with the selected electronic file. The difference extraction system is configured to notify the electronic file indicated by the identification information with priority over the electronic file indicated by the identification information stored in the history information associated by the second means or the third means.

  The invention according to claim 5 is the difference extraction system according to claim 4, wherein the associating unit associates the history information with the electronic file by the second unit or the third unit. The history information further includes means for giving the history information the order in which the history information is associated with the electronic file by the second means or the third means, and the notification means is provided by the second means or the third means. When a user selects an electronic file associated with a plurality of pieces of history information, the difference extraction system performs notification based on the order given to each piece of associated history information.

  The invention according to claim 6 is the difference extraction system according to claim 5, wherein a plurality of electronic files associated with a plurality of pieces of history information are compared by the second means or the third means. The difference extraction system further includes means for restricting each history information from being associated with the electronic file of the comparison partner based on the order given to the associated history information.

  The invention according to claim 7 is the difference extraction system according to any one of claims 1 to 6, wherein the calculation means calculates the similarity of each electronic file to be compared by the difference extraction means, A difference extraction system further comprising: means for restricting association by the association means based on the similarity calculated by the calculation means.

  The invention according to claim 8 is the difference extraction system according to any one of claims 1 to 7, wherein the notifying unit extracts the difference between the electronic file associated with the selected electronic file. The difference extraction system performs notification based on the number of times compared by means or the date and time given to the electronic file associated with the selected electronic file.

  The invention according to claim 9 is the difference extraction system according to any one of claims 1 to 8, wherein the selected electronic file among the electronic files associated with the selected electronic file. The difference extraction system further includes means for restricting notification of the same electronic file.

  The invention according to claim 10 is the difference extraction system according to any one of claims 1 to 9, wherein the difference extraction system is based on the authority of the user with respect to the electronic file associated with the selected electronic file. The difference extraction system further includes means for restricting notification of an electronic file.

  Further, the invention according to claim 11 is a difference extraction unit that extracts a difference by comparing a plurality of electronic files selected by a user among electronic files stored in a file storage unit that stores a plurality of electronic files. A means for associating each electronic file to be compared by the difference extraction means, and when an already associated electronic file is compared, associates the electronic file associated with the electronic file with the electronic file of the comparison partner This is a program for causing a computer to function as notifying means for notifying an electronic file associated with the selected electronic file when the user selects the electronic file associated with the associating means. The difference extraction means includes the selected electronic file, An electronic file from the notified electronic file by serial notifying means selected by the user, it is by comparing the program to extract the difference.

  According to invention of Claim 1, 11, when performing difference extraction, the electronic file linked | related with the electronic file selected by the user can be notified.

  According to the invention of claim 2, the electronic file indicated by the history information associated with the electronic file can be notified.

  According to the invention of claim 3, it is possible to further notify the electronic file associated with the electronic file selected by the user from the notified electronic file.

  According to the invention of claim 4, it is possible to preferentially notify the electronic file indicated by the history information associated when the electronic file is compared with another electronic file for the first time.

  According to the invention of claim 5, it is possible to notify the electronic file indicated by the history information based on the order given to the history information.

  According to the sixth aspect of the present invention, it is possible to restrict the history information from being associated with the electronic file based on the order given to the history information.

  According to the seventh aspect of the present invention, it is possible to limit the association of an electronic file that is not similar to the electronic file to be compared.

  According to the invention of claim 8, the electronic file associated with the electronic file selected by the user can be notified based on the number of comparisons of the electronic file or the date and time given to the electronic file.

  According to invention of Claim 9, it can restrict | limit that the same electronic file as the electronic file selected by the user is notified.

  According to the invention of claim 10, notification of the electronic file can be restricted based on the authority of the user with respect to the electronic file.

It is a system configuration figure of a difference extraction system concerning one embodiment of the present invention. It is a functional block diagram of a difference extraction system. It is a figure which shows an example of correlation data. It is a figure which shows an example of log | history information data. It is a figure which shows an example of a file selection screen. It is a figure which shows an example of correlation data. It is a figure which shows an example of log | history information data. It is a figure which shows an example of correlation data. It is a figure which shows an example of log | history information data. It is a figure which shows an example of correlation data. It is a figure which shows an example of log | history information data. It is a figure which shows an example of correlation data. It is a figure which shows an example of correlation data. It is a figure which shows the one aspect | mode of a file selection screen. It is a figure which shows the one aspect | mode of a file selection screen. It is a figure which shows the one aspect | mode of a file selection screen. It is a sequence diagram of the process performed in a difference extraction system. It is a flowchart which shows an association process. It is a functional block diagram of the difference extraction system concerning a modification. It is a figure which shows an example of the correlation data which concern on a modification. It is a figure which shows an example of the correlation data which concern on a modification. It is a figure which shows an example of the correlation data which concern on a modification. It is a figure which shows the one aspect | mode of the file selection screen which concerns on a modification. It is a figure which shows an example of the correlation data which concern on a modification.

[1. Embodiment]
Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

[2. Difference Extraction System Configuration]
FIG. 1 is a system configuration diagram of a difference extraction system according to an embodiment of the present invention. As shown in FIG. 1, the difference extraction system 1 includes, for example, a server device 10 and a client device 20, and each device is connected via a network 2. The server device 10 and the client device 20 may be realized by a personal computer, for example, and the client device 20 may be realized by a portable information terminal (tablet terminal, smartphone, etc.). Good.

  The server device 10 is, for example, a server device that manages a plurality of electronic files, and includes a control unit 11 including a CPU and the like, a program executed by the control unit 11, electronic files, and various data relating to difference extraction processing. And a communication unit 13 for transmitting / receiving electronic files and data to / from other devices via the network 2.

  The client device 20 includes, for example, a control unit 21 including a CPU, a storage unit 22 that stores programs executed by the control unit 21 and various data, a display unit 23 including a monitor, and the like. An operation unit 24 for a user to perform various operations and a communication unit 25 for transmitting / receiving electronic files and data to / from other devices via the network 2 are configured. For example, a keyboard, a mouse, an operation button, or a touch panel may be used as the operation unit 24, and various other known input devices can be applied.

  In addition, the structure of the difference extraction system 1 shown in FIG. 1 is an example, Comprising: It is not limited to this. For example, in FIG. 1, only one server device 10 and client device 20 are shown, but there may be a plurality of them.

  For example, the difference extraction system 1 compares two electronic files selected by the user who is a user through the operation unit 24 and extracts a difference. In addition, the difference extraction system 1 may display the information regarding the extracted difference on the display unit 23 or may be stored in the storage unit 12 or the like, for example.

  For example, the difference extraction system 1 associates the plurality of electronic files to be compared with each other, and stores information related to the association in the storage unit 12. In addition, for example, when any of the electronic files to be compared is an electronic file that has already been associated, the difference extraction system 1 can change the electronic file associated with the electronic file to the comparison partner. Information relating to the association is stored in the storage unit 12.

  For example, when the electronic file A is compared with the electronic file B1, and the electronic file B2 is already associated with the electronic file B1, the difference extraction system 1 adds the electronic file A to the electronic file A1. In addition to associating the file B1, the electronic file B2 originally associated with the electronic file B1 is also associated with the electronic file A. That is, the electronic file A is associated with the electronic file B1 and the electronic file B2.

  When the electronic file A thus associated is selected again by the user as a comparison target of the difference extraction process, the difference extraction system 1 uses the electronic file B1 and the electronic file associated with the selected electronic file A. The file B2 is notified to the user. For this reason, the user can select another electronic file to be compared in the difference extraction process with the electronic file A from the notified electronic file. Hereinafter, a configuration for realizing the above processing will be specifically described.

[3. Function group realized in difference extraction system]
FIG. 2 is a functional block diagram of the difference extraction system 1. As illustrated in FIG. 2, the difference extraction system 1 includes an electronic file storage unit 31, an association storage unit 32, an electronic file selection unit 41, an electronic file notification unit 42, an association unit 43, and a difference extraction unit 44. , Including.

  2, for example, the control unit 11 of the server device 10 executes a program stored in the storage unit 12, and the control unit 21 of the client device 20 executes a program stored in the storage unit 22. It is realized by doing. Hereinafter, the details of the functional group will be described.

[3-1. Electronic file storage]
For example, the electronic file storage unit 31 is realized mainly by the storage unit 12 of the server device 10. The electronic file storage unit 31 stores a plurality of electronic files. An electronic file is an electronic file that can be edited by a user using a given editing application, such as an image file or a document file (document file, text file).

  In the embodiment, it is assumed that the server device 10 manages a plurality of electronic files in an integrated manner. However, the electronic file storage unit 31 may be a storage unit of the client device 20 in addition to the above. 12 or a given storage device connected to the network 2.

  In addition, among the electronic files stored in the electronic file storage unit 31, each of the plurality of electronic files compared by the difference extraction system 1 may have the same type of file format or may be different. Hereinafter, unless otherwise specified, the case where the electronic file to be compared is an image file (drawing file) will be described as an example. Of course, these may be in other formats.

[3-2. Association storage unit]
The association storage unit 32 is realized mainly by the storage unit 12 of the server device 10, for example. The association storage unit 32 stores data indicating electronic files associated with each other. The association storage unit 32 associates, for example, history information data indicating information regarding the history of electronic files compared by the difference extraction system 1 (hereinafter referred to as history information), and the association between the electronic file to be compared and the history information. Is stored.

  FIG. 3 is a diagram illustrating an example of association data. As shown in FIG. 3, the association data stores, for example, an electronic file name, information indicating the storage location of the electronic file (such as a file path), and related history information in association with each other.

  FIG. 4 is a diagram illustrating an example of history information data. As illustrated in FIG. 4, for example, history information is stored in the history information data together with a history ID that identifies the history information. In the history information, for example, a plurality of electronic file names are stored as information for respectively identifying electronic files that have been compared by the difference extraction system 1 and associated with each other.

  The association history information in the association data includes information for identifying the history information associated with the electronic file, and stores, for example, a history ID. Here, the history ID stored in the related history information is classified into two types, a main history and a sub-history.

  The main history indicates a history ID associated with an electronic file to be compared for the first time when the electronic file is compared with another electronic file for the first time by the difference extraction system 1. For example, when all electronic files to be compared in the difference extraction process are electronic files to be compared for the first time, a history ID is newly generated, and the generated history ID is stored in the main history of each electronic file. Stored.

  Further, for example, when an electronic file that is compared for the first time with another electronic file is compared with an electronic file that has already been stored in the main history, a new history ID is not generated, and the main history is not generated. Is stored in the main history of the electronic file to be compared for the first time.

  Also, for example, when a first electronic file whose history ID is stored in the main history is compared with the second electronic file, the history information of the history ID stored in the main history of the first electronic file includes: Information for identifying the second electronic file (for example, an electronic file name) is stored. That is, the history information of the main history of the first electronic file stores information for identifying the electronic file that has been directly compared with the first electronic file in the past. After that, when the first electronic file and the third electronic file are compared by the difference extraction system 1, information identifying the third electronic file is stored in the history information of the main history of the first electronic file. Is done.

  On the other hand, the sub-history indicates a history ID other than the main history among the history IDs associated with the electronic file. For example, when electronic files whose history IDs are already stored in the main history are compared, and when the history IDs are different from each other, the history ID stored in the main history of each electronic file is Stored in the sub-history of the electronic file of the comparison partner. Further, for example, when an electronic file whose history ID is already stored in the sub-history is compared, the history ID stored in the sub-history is stored in both the main history and sub-history of the electronic file of the comparison partner. The history ID that has not been stored is stored in the sub-history of the electronic file of the comparison partner.

  In the association data shown in FIG. 3, the history ID “001” is stored in the main history of “drawing A-1” and “drawing A-2”. In the history information data shown in FIG. 4, information (for example, electronic file name) for identifying “drawing A-1” and “drawing A-2” is stored as the history information of the history ID “001”. .

[3-3. Electronic file selection section]
For example, the electronic file selection unit 41 is realized mainly by the control unit 21 and the operation unit 24 of the client device 20. The electronic file selection unit 41 acquires information related to the electronic file selected by the user when the user receives an operation of selecting the electronic file by the operation unit 24.

  FIG. 5 is a diagram illustrating an example of a file selection screen. For example, in the file selection screen 50 shown in FIG. 5, when the user selects a button 51 for selecting the selected image a and a button 52 for selecting the selected image b, the difference extraction system 1 The selected image a and the selected image b are selected as two electronic files to be compared.

  For example, when the button 51 for selecting the selected image a is selected by the user, a screen for the user to select an electronic file is displayed. Thereafter, the user selects the electronic file of the selected image a from the electronic files stored in the electronic file storage unit 31 according to the guidance on the screen. For example, when the button 52 for selecting the selected image b is selected, the electronic file of the selected image b is selected by the same method as described above.

  As a method for selecting the selected image b, there is a method for selecting an electronic file from those notified by the electronic file notification unit 42 in addition to the above. Details of the electronic file notification unit 42 will be described later.

  Information regarding the electronic file selected by the user may be displayed on the display unit 23. For example, information on an electronic file selected by the user (for example, an electronic file name) may be displayed in the display column 53 for the selected image a and the display column 54 for the selected image b.

[3-4. Association section]
The associating unit 43 is realized mainly by the control unit 11 of the server device 10. The associating unit 43 associates the electronic files to be compared by the difference extracting unit 44. In addition, when the already-associated electronic file is compared, the associating unit 43 associates the electronic file associated with the electronic file with the electronic file of the comparison partner.

  For example, when comparing the selected image a and the selected image b selected on the file selection screen 50, the associating unit 43 associates the selected image a with the selected image b. Furthermore, when another electronic file (for example, image c) is already associated with the selected image b, the associating unit 43 associates the selected image a with the image c.

  For example, as illustrated in FIG. 2, the association unit 43 includes a history generation unit 61 and a history storage unit 62.

[3-4-1. History generator]
First, when electronic files to be compared for the first time with other electronic files are compared, the history generation unit 61 generates history information including identification information for identifying each electronic file to be compared, and each electronic file Associate with.

  For example, the history ID “001” stored in the history information data illustrated in FIG. 4 is obtained by comparing “drawing A-1” and “drawing A-2” for the first time by the difference extraction system 1. This is a history ID newly generated by the generation unit 61. In the association data shown in FIG. 3, the history ID “001” is stored in the main history of the related history information of “drawing A-1” and “drawing A-2”.

  For example, when the electronic files “Drawing B-1” and “Drawing B-2” that have not been compared with other electronic files from the above state are compared, the association data and the history information data are as shown in FIG. And it will be in the state shown in FIG. That is, as illustrated in FIG. 6, the history generation unit 61 generates, for example, records corresponding to “drawing B-1” and “drawing B-2” as association data, and the history is included in the main history of the related history information. The ID “002” is stored.

  Then, as illustrated in FIG. 7, for example, the history generation unit 61 generates a record corresponding to the history ID “002” in the history information data, and includes “drawing B-1” and “drawing B- 2 ”(for example, electronic file name) is stored.

  As described above, the history generation unit 61 generates history information including identification information for identifying each electronic file to be compared by the difference extraction system 1 and associates the history information with the electronic file, thereby making a comparison by the difference extraction system 1. Associate each electronic file that is played.

[3-4-2. History storage unit]
Next, when the electronic file associated with the history information is compared, the history storage unit 62 associates the history information with the electronic file of the comparison partner, and identifies identification information for identifying the electronic file of the comparison partner. To store. As illustrated in FIG. 2, the history storage unit 62 includes a first history storage unit 63, a second history storage unit 64, and a third history storage unit 65.

[3-4-2-1. First history storage unit]
When the electronic file associated with the history information by the history generation unit 61 is compared with the electronic file that is compared with the other electronic file for the first time, the first history storage unit 63 stores the associated history information. Is associated with the electronic file to be compared for the first time, and identification information for identifying the electronic file to be compared for the first time is stored in the history information.

  For example, the electronic file “drawing B-2” in which the history ID “002” is stored in the main history by the history generating unit 61, and the electronic file “drawing B-3” that has not been compared with other electronic files, Are compared, the association data and the history information data are in the states shown in FIGS. That is, as illustrated in FIG. 8, the first history storage unit 63 generates, for example, a record corresponding to “Drawing B-3” in the association data and stores it in the main history of “Drawing B-2”. The history ID “002” is stored. Since “drawing B-3” is an electronic file that has not been compared with other electronic files so far, the history ID “002” is stored in the main history of “drawing B-3”.

  Then, as shown in FIG. 9, for example, the first history storage unit 63 adds “drawing B as a comparison partner of“ drawing B-2 ”to the history information of the history ID“ 002 ”stored in the main history. -3 "is stored (for example, an electronic file name).

[3-4-2-2. Second history storage unit]
In addition, when the history files 61 or the first history storage unit 63 compares the electronic files associated with the history information and the history information is different from each other, the second history storage unit 64 determines whether each of the electronic files to be compared is compared. Is associated with the electronic file of the comparison partner, and identification information for identifying the electronic file of the comparison partner is stored in the history information.

  For example, an electronic file “drawing B-3” in which the history ID “002” is stored in the main history by the first history storage unit 63, and “drawing A-2” in which the history ID “001” is stored in the main history. Are compared, the association data and the history information data are in the states shown in FIGS. That is, as shown in FIG. 10, the second history storage unit 64 refers to, for example, the association data, is stored in the main history of “drawing B-3”, and is stored in “drawing A-2”. No history ID “002” is stored in the sub-history of “drawing A-2”. Similarly, the second history storage unit 64 stores the history ID “001” stored in the main history of “drawing A-2” and not stored in “drawing B-3” as “drawing B-3”. Stored in the sub-history.

  Then, as illustrated in FIG. 11, the second history storage unit 64 compares the history information with the history ID “001” stored in the main history of the electronic file “drawing A-2” in the history information data, for example. Information (for example, an electronic file name) for identifying “Drawing B-3” as the partner is stored. Similarly, the second history storage unit 64 identifies information “drawing A-2” as the comparison partner in the history information of the history ID “002” stored in the main history of the electronic file “drawing B-3”. Is stored.

[3-4-2-3. Third history storage unit]
When the second history storage unit 64 compares the electronic file associated with the history information and the history information is not associated with the electronic file of the comparison partner, the third history storage unit 65 Are stored in association with the electronic file of the comparison partner.

  For example, an electronic file “drawing A-2” in which the history ID “001” is stored in the main history, and the history ID “002” is stored in the sub history by the second history storage unit 64, and “drawing A-x” ( When the history ID “001” is stored in the main history and the second history storage unit 64 compares the history ID “003” in the sub-history), the association data is as shown in FIG. It will be in the state shown in. That is, as illustrated in FIG. 12, the third history storage unit 65 stores, for example, a history ID “002” that is stored in the sub-history of “drawing A-2” and is not stored in “drawing A-x”. Are stored in the sub-history of “drawing A-x”. Similarly, the third history storage unit 65 stores the history ID “003” stored in the sub-history of “drawing A-x” and not stored in “drawing A-2” as “drawing A-2”. In the sub-history.

  Note that the same history ID “001” is already stored in the main history of “drawing A-2” and “drawing A-x”, and the history ID “001” in the history information data includes “drawing A”. -2 "and" Drawing A-x "are stored. Therefore, when electronic files are compared under the above conditions, new information is not stored in the history information, and the history information data is not updated.

  In addition to the above description, the history storage unit 62 compares the electronic file associated with the history information by the third history storage unit 65, and the history information associated with the electronic file is compared with the electronic file of the comparison partner. If it is not associated with the electronic file, the history information associated with the electronic file is stored in association with the electronic file of the comparison partner.

  For example, “drawing A-2” in which the history ID “001” is stored in the main history and the history IDs “002” and “003” are stored in the sub-history has not been compared with other electronic files. 13, as illustrated in FIG. 13, the history storage unit 62 refers to the association data and sets the history ID “001” stored in the main history of “Drawing A-2” to “ The history IDs “002” and “003” stored in the main history of “drawing C” and stored in the subhistory of “drawing A-2” are stored in the subhistory of “drawing C”.

  Then, for example, as in the first history storage unit 63, the history storage unit 62 adds “drawing C” to the history information of the history ID “001” stored in the main history of “drawing A-1” in the history information data. Is stored (for example, an electronic file name).

  In addition, for example, the “drawing A-2” and the “drawing D” (history ID “004”) in which the history ID “001” is stored in the main history and the history IDs “002” and “003” are stored in the sub-history. Is stored in the main history and the history ID is not stored in the sub history), the association data is as shown in FIG. That is, for example, the history storage unit 62 refers to the association data, stores a plurality of history IDs “001” and “001” stored in the related history information of “drawing A-2” and not stored in “drawing D”. “002” and “003” are stored in the sub-history of “Drawing D”. Similarly, the history storage unit 62 stores the history ID “004” stored in the main history of “drawing D” and not stored in “drawing A-2” as the sub-history of “drawing A-2”. To store.

  Then, the history storage unit 62 refers to the history information data, for example, similarly to the second history storage unit 64, and stores history information of the history ID “001” stored in the main history of the electronic file “drawing A-2”. In addition, information (for example, an electronic file name) for identifying “Drawing D” as a comparison partner is stored. Similarly, the history storage unit 62 stores information for identifying “Drawing A-2” as a comparison partner in the history information of the history ID “004” stored in “Drawing D”.

  As described above, the history storage unit 62 associates the history information associated with each electronic file with the electronic file of the comparison partner, and the history information associated with the main history of each electronic file, By storing identification information for identifying the files, the electronic files to be compared are associated with each other.

[3-5. Difference extraction unit]
The difference extraction unit 44 is realized mainly by the control unit 11 of the server device 10. The difference extraction unit 44 extracts a difference by comparing a plurality of electronic files selected by the user among the electronic files stored in the electronic file storage unit 31.

  For example, when the two electronic files compared in the difference extraction unit 44 are image files, the difference extraction unit 44 extracts the difference between the two image files by pattern matching. For example, the difference extraction unit 44 may perform pattern matching to extract different portions of the two image files and acquire a difference image. Of the entire images indicated by the image files, Different portions may be highlighted and displayed on the display unit 23.

  For example, when the two electronic files to be compared are document files (document file, text file), the difference extraction unit 44 compares the symbol strings and character strings indicated by the electronic files and extracts the difference. Alternatively, different parts of the entire symbol string or character string indicated by each document file may be highlighted and displayed on the display unit 23.

[3-6. Electronic file notification section]
The electronic file notification unit 42 is realized mainly by the control unit 11 of the server device 10. When the electronic file associated by the associating unit 43 is selected by the user, the electronic file notification unit 42 notifies the electronic file associated with the selected electronic file.

  The electronic file notification unit 42 notifies the electronic file indicated by the history information associated with the electronic file selected by the user, for example. Here, as shown in FIG. 10 and FIG. 11, information related to “drawing A-1”, “drawing A-2”, “drawing B-1”, “drawing B-2”, and “drawing B-3” is previously associated data, A case where the history information data is stored will be described as an example.

  FIG. 14 is a diagram illustrating an aspect of the file selection screen. In the file selection screen 50 shown in FIG. 14, when the user selects the selected image a and selects the related file notification button 55, the “drawing A-2” selected as the selected drawing a in the related file notification column 56 is selected. The information of the electronic file associated with "is displayed.

  Here, a case where the electronic file notification unit 42 notifies the information of the electronic file associated with “Drawing A-2” will be described. As shown in FIG. 10, in the association data, history IDs “001” and “002” are stored in the related history information of “drawing A-2”. As shown in FIG. 11, in the history information data, information (for example, “Drawing A-1”, “Drawing A-2”, “Drawing B-3”) is identified in the history information of the history ID “001” (for example, Electronic file name) is stored, and the history information of the history ID “002” includes information for identifying “drawing B-1,” “drawing B-2,” “drawing B-3,” and “drawing A-2”. Stored.

  The electronic file notification unit 42, for example, “Drawing A-1”, “Drawing A-2”, “Drawing B-”, excluding duplicates in the electronic file indicated by the history ID “001” and the history ID “002”. 3 ”,“ Drawing B-1 ”,“ Drawing B-2 ”information (for example, electronic file name) is displayed in the related file notification column 56 to notify the user of the electronic file associated with the selected image a. To do.

  Here, “drawing B-1” and “drawing B-2” are electronic files indicated only by the sub-history of “drawing A-2”. That is, “drawing B-1” and “drawing B-2” are electronic files that have not been directly compared with “drawing A-2” in the past. For example, the file selection screen 50 shown in FIG. 14 indicates that the user is notified of a selection image a selected by the user and an electronic file that has not been directly compared in the past.

  As described above, the electronic file notification unit 42 notifies the electronic file (stored in the history information) associated with the electronic file selected by the user. Also, the electronic file selection unit 41 can allow the user to select an electronic file to be compared in the difference extraction process from the electronic file notified in this way. In this case, the difference extraction unit 44 compares the electronic file selected by the user with the electronic file selected by the user from the notified electronic file, and extracts the difference between the electronic files.

  For example, the electronic file selection unit 41 receives an operation from the user who selects the electronic file of the selected image b from among the electronic files notified to the related file notification column 56 of the file selection screen 50, and relates to the selected image b. Get information. Further, the difference extraction unit 44 extracts differences between the respective electronic files by, for example, comparing the two electronic files of the selected image a and the selected image b selected by the user.

  In addition, the electronic file notification unit 42 indicates the identification information stored in the history information associated with the history generation unit 61 or the first history storage unit 63 among the history information associated with the selected electronic file. You may make it notify an electronic file preferentially rather than the electronic file which the identification information stored in the historical information linked | related by the 2nd log | history storage part 64 or the 3rd log | history storage part 65 shows.

  In the present embodiment, among the history IDs stored in the related history information, the history information of the history ID stored in the main history is the history information associated by the history generation unit 61 or the first history storage unit 63 described above. It corresponds to. The history information of the history ID stored in the sub-history corresponds to the history information associated by the second history storage unit 64 or the third history storage unit 65.

  In addition, for example, when a plurality of electronic files are displayed side by side, the priority electronic file is displayed side by side at a higher position than other electronic files. Is mentioned. In addition, only the priority electronic file is notified, and the user's operation amount for notifying the priority electronic file is smaller than the operation amount for notifying other electronic files. .

  The electronic file notification unit 42, for example, among the electronic files associated with the “drawing A-2” selected by the user, the electronic file “drawing A-1” indicated by the history ID “001” stored in the main history. "Drawing A-2" and "Drawing B-3" are preferentially notified over other electronic files.

  For example, as shown in FIG. 14, “drawing A-1”, “drawing A-2”, and “drawing B-3” may be displayed at the top of the list in the related file notification column 56. As shown in FIG. 15, “Drawing A-1”, “Drawing A-2”, and “Drawing B-3” may be displayed before the “display further” button is selected by the user.

  Note that, when the user selects the “display further” button shown in FIG. 15, among the electronic files associated with the sub-history of “drawing A-2”, the “drawing” associated with only the main history. “B-1” and “Drawing B-2” are further displayed.

  In addition, when the notified electronic file is selected by the user, the electronic file notification unit 42 further notifies the electronic file indicated by the identification information stored in the history information associated with the selected electronic file. You may do it.

  For example, as shown in FIG. 16, “drawing A-1” is selected as the selected image a on the file selection screen 50, and “drawing B-3” in the related file notification column 56 is selected by the user. In this case, the electronic file notification unit 42 selects the “drawing B-3” and the electronic files “drawing B-1”, “drawing B-2”, “drawing A-” associated with the “drawing B-3”. 2 ”is further notified.

  As described above, the user is further notified of the electronic drawing notified based on “Drawing B-3” for “Drawing B-1” and “Drawing B-2” that are not associated with “Drawing A-1”. You can select from files.

  Note that the information that the electronic file notification unit 42 displays on the display unit 23 to notify the electronic file is not limited to the electronic file name, and any information that identifies the electronic file may be used. For example, the electronic file notification unit 42 may display the storage location of the electronic file. For example, the electronic file notification unit 42 displays a reduced image (thumbnail image) indicating the contents of the electronic file. You may do it.

[4. Processing executed in the difference extraction system]
Next, the process which the difference extraction system 1 performs in this embodiment is demonstrated.

[4-1. Overall processing]
FIG. 17 is a sequence diagram of processing executed in the difference extraction system 1. Here, on the file selection screen 50 shown in FIG. 5, two electronic files are selected by the user from the electronic files stored in the storage unit 12, and the selected electronic files are compared to extract a difference. The process up to will be described.

  As shown in FIG. 17, first, in the client device 20, the control unit 21 waits for an operation for selecting the first electronic file by the user from the electronic files stored in the storage unit 12 (S <b> 101). Subsequently, the control unit 21 transmits the information of the first electronic file to the server device 10 (S102).

  In the server device 10, the control unit 11 is associated with the first electronic file based on the received information on the first electronic file and the association data and history information data stored in the storage unit 12. The electronic file information is transmitted to the client device 20 (S103).

  In S103, for example, the control unit 11 refers to the association data stored in the storage unit 12, and acquires the history ID stored in the record corresponding to the first electronic file. In addition, the control unit 11 acquires information for identifying an electronic file stored in the history information of the acquired history ID, and transmits this information to the client device 20.

  In the client device 20, the control unit 21 notifies the user of the electronic file associated with the first electronic file based on the received information (S104). For example, as illustrated in FIGS. 14 to 16, the control unit 21 causes the display unit 23 to display information related to the electronic file associated with the first electronic file, thereby associating with the first electronic file. Notify users of electronic files.

  The control unit 21 waits for an operation for selecting the second electronic file by the user from the notified electronic files (S105). The control unit 21 receives an instruction to execute difference extraction from the user (S106), and when the instruction is received, the control unit 21 stores information on the first electronic file and the second electronic file selected by the user in the server device. 10 (S107).

  In the server device 10, the control unit 11 executes the electronic file association process shown in FIG. 18 based on the received information (S108). The control unit 11 compares the two selected electronic files and executes a difference extraction process (S109). Note that the order of executing the processes of S108 and S109 may be either.

[4-2. Association process]
Next, details of the association process executed in S108 will be described. FIG. 18 is a flowchart showing the association process. As illustrated in FIG. 18, the control unit 11 of the server apparatus 10 receives and acquires information on the two electronic files transmitted from the client apparatus 20 in S107 (S201).

The control unit 11 determines whether or not the two electronic files are electronic files that are first compared with other electronic files (S202). As a condition for determining that one electronic file is an electronic file that is compared for the first time with another electronic file, for example, the following cases may be mentioned.
・ When the information about one electronic file is not stored in the association data ・ When the main history of one electronic file is not stored in the association data

  When the two electronic files are both electronic files that are compared for the first time with other electronic files (S202: Y), the control unit 11 generates a record corresponding to each electronic file in the association data (S203). . The control unit 11 generates new history information including information (for example, electronic file name) for identifying each electronic file in the history information data. (S204).

  The control unit 11 associates the newly generated history information with the main history of each electronic file in the association data (S205), and ends the process of S108.

  When the condition of S202 is not satisfied (S202: N), the control unit 11 determines whether only one of the two electronic files is an electronic file that is compared with the other electronic file for the first time. Is determined (S206).

  When only one of the electronic files is an electronic file that is compared with the other electronic file for the first time (S206: Y), the control unit 11 adds a record corresponding to the electronic file that is compared for the first time to the association data. Generate (S207).

  The control unit 11 acquires the history information associated with the main history from the electronic file with which the history information is already associated in the association data, and this history information is compared with the electronic device that is compared for the first time. The file is associated with the main history (S208). The control unit 11 refers to the history information data and stores information (for example, an electronic file name) identifying the electronic file to be compared for the first time in the acquired history information (S209).

  The control unit 11 determines whether or not history information is associated with the sub-history of the electronic file already associated with the history information (S210). When history information is associated with the sub history (S210: Y), this history information is associated with the sub history of the electronic file to be compared for the first time (S211), and the processing of S108 is terminated.

  When electronic files that have been compared with other electronic files in the past are compared (S206: N), the control unit 11 adds the electronic file of the comparison partner to the history information of the main history of each electronic file. (For example, an electronic file name) is stored. (S212).

  The control unit 11 determines whether there is history information that does not overlap with the history information of the electronic file of the comparison partner in the history information of each electronic file (S213). If there is history information that does not overlap (S213: Y), the control unit 11 associates this history information that does not overlap with the sub-history of the electronic file of the comparison partner (S214), and ends the processing of S108.

[5. Summary of Embodiment]
The difference extraction system 1 according to the present embodiment refers to history information associated with related history information (main history or sub-history) of an electronic file selected by the user when performing difference extraction. Notify the electronic file (indicated by history information) associated with the selected electronic file.

  In addition, the difference extraction system 1 refers to the history information associated with the electronic file selected by the user from the notified electronic file, thereby selecting the electronic file selected by the user from the notified electronic file. The electronic file associated with is further notified.

  Further, the difference extraction system 1 compares the electronic file with other electronic files for the first time by referring to the history information associated with the main history of the electronic file and the history information associated with the sub-history, respectively. The electronic file indicated by the history information associated with the case (that is, the history information of the main history) is notified with priority.

  In addition, this invention is not limited to said embodiment. Modifications can be made as appropriate without departing from the scope of the present invention.

[6. Modified example]
FIG. 19 is a functional block diagram of the difference extraction system 1 according to the modification. As illustrated in FIG. 19, the difference extraction system 1 according to the modification includes a restriction unit 71 and a similarity calculation unit 72 in addition to the functions described in the embodiment. For example, the control unit 11 of the server device 10 executes the program stored in the storage unit 12 and the control unit 21 of the client device 20 stores the storage unit 22 in the limit unit 71 and the similarity calculation unit 72. This is realized by executing the programmed program.

  (1) In the embodiment, a case has been described in which two storage destinations of the main history and the sub history are provided as the storage destination of the history ID in the association data. For example, a plurality of electronic files associated with the electronic file may be notified based on the order in which the history IDs are stored in the sub-history.

  When the history information is associated with the electronic file by the second history storage unit 64 or the third history storage unit 65, the associating unit 43 of the modified example (1) uses the second history storage unit 64 or the third history storage unit 65 to The order in which the history information is associated with the electronic file is given to the history information, and the electronic file notification unit 42 according to the modification (1) uses the second history storage unit 64 or the third history storage unit 65 to generate a plurality of history information. When an electronic file associated with is selected by the user, notification is performed based on the order given to each associated history information.

  Here, the history information associated by the second history storage unit 64 or the third history storage unit 65 corresponds to, for example, history information identified by the history ID stored in the sub-history in the association data. The order in which history information is associated with an electronic file corresponds to the order of sub-histories in which history IDs are stored (hereinafter also simply referred to as sub-history order).

  The order in which history IDs are stored in the sub-history (sub-history order) is, for example, the order indicating the number of the electronic file for the history ID stored in the sub-history of the electronic file. For example, when the history ID stored in the main history is stored in the sub-history of another electronic file, the history ID is stored in the sub-history for the first time. “1” is given. In addition, when a history ID to which “n” (n is a natural number) is assigned as a sub-history order is stored as a new history ID (not overlapping with an existing history ID) of another electronic file, Since the other electronic file is the “n + 1” -th electronic file for the new history ID, “n + 1” is assigned as the sub-history order of the new history ID.

  In addition, for example, the order of the sub-history may be an order indicating the history ID (of the sub-history) of the electronic file storing the history ID in the sub-history. For example, when m (m is an integer of 0 or more) history IDs are stored in the sub-history of an electronic file, and a new history ID (not overlapping with an existing history ID) is stored there, “M + 1” may be given as the order of the sub-history of the new history ID.

  The associating unit 43 stores the history ID in the sub-history of the electronic file to be compared and assigns the order of the sub-history in the association information. Here, the case where the order of the sub-history is the order indicating the electronic file number for the history ID will be described as an example.

  20 to 22 are diagrams illustrating an example of association data according to the modification example (1). For example, as shown in FIG. 20, the association data includes a plurality of history ID storage locations (sub history 1, sub history 2, sub history 3...) As sub history. In this case, the order of the sub-history corresponds to a natural number indicating the storage destination of each of the sub-history 1, the sub-history 2, the sub-history 3... This is realized by storing the history ID in any one of the sub-history 2, the sub-history 3.

  First, in the association data shown in FIG. 20, history IDs “005”, “006”, and “007” are stored in the main histories corresponding to the records of the electronic files “drawing E”, “drawing F”, and “drawing G”, respectively. It shall be.

  Here, when the “drawing E” and the “drawing F” are compared by the difference extraction system 1, the association data is in the state shown in FIG. Specifically, when the history ID “005” stored in the main history of “drawing E” is stored in “drawing F”, the history ID “005” is stored in the secondary history for the first time. "1" is given as the order of That is, the history ID “005” is stored in the sub-history 1 of “drawing F”. Similarly, the history ID “006” associated with the main history of “drawing F” is stored in the sub-history 1 of “drawing E”.

  Thereafter, when “drawing E” and “drawing G” are further compared, the association data is in the state shown in FIG. Specifically, when history IDs “005” and “007” stored in the main history of “drawing E” and “drawing G” are stored in the electronic file of the comparison partner, the order of the sub-history As “1”. That is, the history IDs “005” and “007” are stored in the sub-history 1 of “drawing G” and “drawing E”. Then, when the history ID “006” stored in the subhistory 1 of “drawing E” is stored in the subhistory of the “drawing G” of the comparison partner, it is the original value as the subhistory order “ “2” obtained by adding 1 to “1” is assigned. Accordingly, the history ID is stored in the sub-history 2 of “drawing G”.

  After the sub-history order is assigned in this way, the electronic file notification unit 42 notifies the electronic file indicated by the sub-history based on the sub-history order. The electronic file notifying unit 42 is, for example, of the related history information stored in the electronic file selected by the user. 1. History information of main history, 2. History information of sub history 1 The priority order is determined in the order of the history information of the sub-history 2, and the electronic file of the history information with the higher priority order is notified with higher priority than the electronic file of the history information with the lower priority order.

  Specifically, as shown in FIG. 23, the electronic file indicated by the history ID “007” of the main history of “Drawing G” is displayed at the top of the list in the related file notification column 56. The electronic file indicated by the history ID “005” stored in the sub-history 1 (with “1” added as the sub-history order) among the sub-histories of the “drawing G” is displayed in the middle of the list. The electronic files indicated by the history ID “006” stored in the sub-history 2 are respectively displayed in the lower part of the list.

  In addition, for example, the restriction unit 71 may restrict the electronic file associated with the sub-history from being notified when the order of the sub-history exceeds the threshold, and the operation from the user may be performed. The electronic file associated with the sub-history may be notified by changing the threshold value by accepting or canceling the restriction by the threshold value.

  Further, in the data storage examples of the association data in FIGS. 20 to 22, the case where the sub history 1, the sub history 2, the sub history 3,... Are provided as the history ID storage destinations has been described. The sub-history may be stored as a field including the history ID and the order of the sub-history. In addition, for example, apart from the association data, information for identifying the electronic file (for example, , Electronic file name), history ID, and sub-history order may be included.

  As described above, the difference extraction system 1 of the modification example (1) is based on the order in which the history information is associated with the electronic file (for example, the order in which the history IDs are stored in the sub-history). Notify the file.

  (2) In the modification (1), the case where the electronic file indicated by the history information is notified based on the order of the sub-history associated with the electronic file has been described. For example, based on the order of the sub-history, You may make it restrict | limit that historical information is linked | related with an electronic file.

  When the second history storage unit 64 or the third history storage unit 65 compares electronic files associated with a plurality of history information, the restriction unit 71 of the modified example (2) gives the associated history information. Based on the order, the history information is restricted from being associated with the electronic file of the comparison partner.

  Here, restricting the history information to be associated with the electronic file is to prevent the history information from being associated with the electronic file. For example, when the order given to the history information associated with the electronic file (that is, the order of the sub-history assigned to the history ID of the sub-history) exceeds the threshold, the restriction unit 71 compares the history ID with the history information. It is restricted so that it is not stored in the related history information of the other electronic file of the other party.

  For example, in the case where the association data is composed of the data storage examples shown in FIGS. 20 to 22, the restriction unit 71 sets the sub-history 4, the sub-history 5,. The history ID of .. is restricted from being stored in the related history information of other electronic files of the comparison partner.

  Note that the order of the sub-history may be the order indicating the electronic file number for the history ID as in the modification (1), or the order (sub-history) history ID for the electronic file. It is good also as an order which shows.

  As described above, the difference extraction system 1 of the modification (2) associates history information with an electronic file based on the order given to the history information (for example, the order in which history IDs are stored in the sub-history). Limit.

  (3) In the embodiment, it has been described that the two electronic files to be compared by the difference extraction system 1 are associated. For example, the electronic files to be compared based on the similarity between the two electronic files to be compared You may make it restrict | limit that each other is linked | related.

  The similarity calculation unit 72 of the modification (3) calculates the similarity of each electronic file compared by the difference extraction unit 44, and the restriction unit 71 of the modification (3) is based on the calculated similarity. The association by the associating unit 43 is restricted.

  For example, when the two electronic files to be compared are image files, the similarity calculation unit 72 calculates the similarity based on the difference between the pixel values of the two images to be compared. Is less than the threshold, the electronic files to be compared are restricted from being associated with each other.

  Further, for example, when the two electronic files to be compared are document files (document file, text file), the similarity calculation unit 72 generates a symbol string or a character string indicated by the two electronic files to be compared. When the similarity is calculated based on the number or number of characters that match each other and the number of characters or the number of characters that do not match (character string), and the similarity is less than the threshold The electronic files to be compared are restricted from being associated with each other.

  As described above, the difference extraction system 1 of the modification example (3) restricts the electronic files to be compared to be associated with each other based on the similarity between the two electronic files to be compared. Restrict the association of electronic files that are not similar to the file.

  (4) In the embodiment, it has been described that the electronic file associated with the electronic file selected by the user is notified. However, for example, the associated electronic file is notified by the difference extraction process performed in the past. You may make it notify based on the frequency | count of comparison, or the date (final comparison date etc.) provided to the said related electronic file.

  The electronic file notification unit 42 of the modified example (4) includes the number of times the electronic file associated with the electronic file selected by the user has been compared by the difference extraction unit 44 or the electronic file associated with the selected electronic file. Notification is performed based on the date and time given to the file.

  For example, the association data stored in the association storage unit 32 includes the number of comparisons (number of times an electronic file has been compared) and the last comparison date / time (the electronic file has been compared last), in addition to those described in the embodiment. Date / time) information is stored. FIG. 24 is a diagram illustrating an example of association data according to Modification Example (4).

  For example, the associating unit 43 updates the number of comparisons of the electronic files to be compared and the last comparison date and time. The comparison count stores “1” when the electronic file is compared with another electronic file for the first time. When some value is already stored in the comparison count, a value obtained by adding 1 to the value is stored. The final comparison date / time stores, for example, the current date / time when the association data is updated.

  In this case, the electronic file notification unit 42 notifies the electronic file associated with the electronic file selected by the user based on the number of comparisons of the electronic files to be compared or the last comparison date and time. Next, an example of notifying “drawing H-1,” “drawing H-2,” and “drawing H-3” shown in FIG. 24 as an electronic file associated with the electronic file selected by the user will be described.

  In the above example, when the electronic file is notified in the order of “number of comparisons”, the electronic file notification unit 42 is in the order of “drawing H-3”, “drawing H-1”, and “drawing H-2”. Notify electronic files. Further, when the notification is made in the order of “last comparison date and time from newest”, the electronic file notification unit 42 notifies the electronic files in the order of “drawing H-3”, “drawing H-2”, and “drawing H-1”. .

  For example, when the electronic file notification unit 42 displays a plurality of electronic files side by side, the display order may be determined according to any one of the above-described orders. In addition, for example, only the electronic files in the order within the threshold may be notified, or the electronic files may be notified at a timing based on the order.

  In addition, the electronic file notification unit 42 is not limited to the above-described final comparison date and time, and is added to the electronic file, for example, the creation date and update date and time of the electronic file, the access date and time, or the date and time when the electronic file was first stored in the history information The electronic file may be notified based on some date information.

  In addition, the electronic file notification unit 42 arranges the electronic files, for example, in the first condition (for example, in descending order of the number of comparisons), and further, in the second condition (for example, in order of the type of history information in which the electronic file is stored). ), The electronic files may be rearranged, and the electronic files may be notified based on the rearranged order.

  As described above, the difference extraction system 1 of the modified example (4) notifies the electronic file associated with the electronic file selected by the user based on the number of times the electronic file is compared or the date and time given to the electronic file. To do.

  (5) Further, for example, the restriction unit 71 may restrict notification of the same electronic file as the selected electronic file among the electronic files associated with the electronic file selected by the user. Good.

  For example, when the electronic file A, the electronic file B, and the electronic file C are associated with the electronic file A selected by the user, the restriction unit 71 notifies the electronic file A by the electronic file notification unit 42. Limit what is done.

  For example, when the electronic file identified by the history information matches the electronic file associated with the history information, the restriction unit 71 may restrict the notification of the electronic file. In addition, for example, the restriction unit 71 restricts notification of the electronic file when the electronic file indicated in the history information matches the electronic file selected by the user in the electronic file selection unit 41. You may do it.

  (6) Further, for example, the restriction unit 71 may restrict notification of the electronic file based on the user's authority over the electronic file associated with the electronic file selected by the user.

  The user authority with respect to the electronic file is, for example, a user authority set for each electronic file stored in the electronic file storage unit 31. According to this authority, the electronic file is browsed or the electronic file is modified. In addition, user operations such as moving and deleting electronic files are restricted.

  For example, the restriction unit 71 restricts notification of an electronic file in accordance with the contents of the authority listed above for the electronic file. For example, an electronic file whose browsing is restricted by the user's authority may not be notified to the user, and similarly, an electronic file whose modification is restricted may not be notified. .

  (7) In the embodiment, the case where two storage destinations of the main history and the sub-history are provided as the storage destination of the history ID in the association data has been described. However, for example, only the main history may be provided. Good. That is, when the history ID is already stored in the main history of each electronic file to be compared, the history ID of the comparison partner may not be newly stored. In addition, information (for example, electronic file name) for identifying the electronic file of the comparison partner may be stored in the history information identified by the already stored history ID.

  (8) Further, for example, instead of dividing the main history and the sub-history, a storage destination in which these are integrated may be provided. That is, the history ID of the comparison partner may be stored in the same storage location regardless of whether or not the electronic file is compared with other electronic files for the first time. For example, when the electronic file A in which the history ID “a” is stored in the related history information and the electronic file B in which the history ID “b” is stored in the related history information are compared, The history ID “b” may be stored in the related history information, and the history ID “a” may be stored in the related history information of the electronic file B. In this case, for some or all of the history IDs already stored in the related history information, the history information identified by the history ID includes information identifying the comparison partner electronic file (for example, the electronic file). Name) may be stored.

  (9) Further, for example, the association data stored in the association storage unit 32 preliminarily stores information (electronic file names, storage locations, etc.) regarding all electronic files stored in the storage unit 12 or the like. It may be. In this case, the associating unit 43 does not add or update the information related to the electronic file in the associating data, and the control unit 11 executes the processes related to S203 and S207 in the associating process shown in FIG. do not do.

  (10) For example, in the history information data stored in the association storage unit 32, the information identifying the compared electronic file stored in the history information is not limited to the electronic file name. For example, the history information may store the storage location of the electronic file, or when the ID for identifying each electronic file is assigned and stored, the history information stores the ID. It may be.

  (11) For example, in the embodiment, the case where two electronic files are compared has been described, but three or more electronic files may be compared.

  For example, the electronic file selection unit 41 may select three or more electronic files. For example, on the file selection screen 50 shown in FIG. 5, in addition to the selected image a and the selected image b, the selected image c, the selected image d,... May be selected by the user.

  In this case, the associating unit 43 may associate all three or more electronic files selected by the user, or only a part (for example, only the electronic files selected as the selected image a and the selected image b). May be associated. When the second history storage unit 64 stores the main history stored in the plurality of electronic files in the main history of the electronic file that is compared with other electronic files for the first time, only one main history is stored. Alternatively, some or all main histories may be stored.

  In this case, the electronic file notification unit 42 may notify the contents associated with the electronic file selected as the selected image a, and in addition, the selected image b, the selected image c, the selected image d,. -You may make it notify the content linked | related with the electronic file selected as.

  1 differential extraction system, 2 network, 10 server device, 11 control unit, 12 storage unit, 13 communication unit, 20 client device, 21 control unit, 22 storage unit, 23 display unit, 24 operation unit, 25 communication unit, 31 electron File storage unit, 32 Association storage unit, 41 Electronic file selection unit, 42 Electronic file notification unit, 43 Association unit, 44 Difference extraction unit, 50 File selection screen, 51 Button for selecting selection image a, 52 Selection image b Button, 53 selection image a display field, 54 selection image b display field, 55 related file notification button, 56 related file notification field, 61 history generation unit, 62 history storage unit, 63 first history storage Section, 64 second history storage section, 65 third history storage section, 71 restriction section, 72 similarity calculation section.

Claims (14)

File storage means for storing a plurality of electronic files;
Of the electronic files stored in the file storage means, a difference extraction means for extracting a difference by comparing a plurality of electronic files selected by the user;
A means for associating each electronic file to be compared by the difference extraction means, and when an already associated electronic file is compared, associates the electronic file associated with the electronic file with the electronic file of the comparison partner An association means;
A notification means for notifying an electronic file associated with the selected electronic file when the electronic file associated with the association means is selected by a user;
Including
The association means includes
When electronic files that are compared with other electronic files for the first time are compared, generation information that includes identification information that identifies each electronic file to be compared is generated, and a generation unit that associates the electronic file with each electronic file;
A storage unit that associates the history information with the electronic file of the comparison partner when storing the electronic file associated with the history information, and stores identification information for identifying the electronic file of the comparison partner in the history information; Including
The notification means includes
Notifying the electronic file indicated by the identification information stored in the history information associated with the selected electronic file,
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the electronic files notified by the notification means, and extracting a difference;
Difference extraction system. The notification means includes
When the electronic file notified by the notification means is selected by the user, the electronic file indicated by the identification information stored in the history information associated with the selected electronic file is further notified,
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the further notified electronic file to extract a difference;
The difference extraction system according to claim 1 . The storage means includes
When the electronic file associated with the history information by the generating unit is compared with the electronic file that is compared for the first time with another electronic file, the history information is associated with the electronic file that is compared for the first time, First means for storing identification information for identifying the electronic file to be compared for the first time in the history information;
When the generation means or the first means compares the electronic files associated with the history information and the history information is different from each other, the history information associated with each electronic file to be compared is compared with the comparison partner. A second means for storing identification information for identifying the electronic file of the comparison partner in the history information,
If the electronic file associated with the history information is compared by the second means, and the history information is not associated with the electronic file of the comparison partner, the history information is associated with the electronic file of the comparison partner. Means,
Including
The notification means includes
Of the history information associated with the selected electronic file, the electronic file indicated by the identification information stored in the history information associated with the generation means or the first means is the second means or the Notifying preferentially over the electronic file indicated by the identification information stored in the history information associated by the third means,
The difference extraction system according to claim 2 . The association means includes
When the history information is associated with the electronic file by the second means or the third means, the order in which the history information is associated with the electronic file by the second means or the third means is assigned to the history information. Further comprising means for
The notification means includes
When an electronic file associated with a plurality of the history information by the second means or the third means is selected by the user, notification is performed based on the order given to each of the associated history information.
The difference extraction system according to claim 3 . The difference extraction system includes:
In the case where the electronic files associated with a plurality of the history information are compared by the second means or the third means, each history information is compared with the comparison partner based on the order given to the associated history information. Further comprising means for restricting being associated with the electronic file of
The difference extraction system according to claim 4 . The difference extraction system includes:
Calculating means for calculating the similarity of each electronic file compared by the difference extracting means;
Means for limiting association by the association means based on the similarity calculated by the calculation means;
Further including
The difference extraction system according to any one of claims 1 to 5 . The notification means includes
Notification is performed based on the number of times the electronic file associated with the selected electronic file is compared by the difference extraction unit, or the date and time given to the electronic file associated with the selected electronic file.
The difference extraction system according to any one of claims 1 to 6 . The difference extraction system includes:
Means for restricting notification of the same electronic file as the selected electronic file among the electronic files associated with the selected electronic file;
The difference extraction system according to any one of claims 1 to 7 . The difference extraction system includes:
Further comprising means for restricting notification of the electronic file based on a user's authority to the electronic file associated with the selected electronic file.
The difference extraction system according to any one of claims 1 to 8 . A difference extraction means for extracting a difference by comparing a plurality of electronic files selected by a user among electronic files stored in a file storage means for storing a plurality of electronic files,
A means for associating each electronic file to be compared by the difference extraction means, and when an already associated electronic file is compared, associates the electronic file associated with the electronic file with the electronic file of the comparison partner Association means; and
Notification means for notifying the electronic file associated with the selected electronic file when the user selects the electronic file associated with the association means;
As a program for causing a computer to function as
The association means includes
When electronic files that are compared with other electronic files for the first time are compared with each other, generation information that includes identification information for identifying each electronic file to be compared is generated and associated with each electronic file; and
When the electronic file associated with the history information is compared, the history information is associated with the electronic file of the comparison partner, and the storage means for storing identification information for identifying the electronic file of the comparison partner in the history information,
The notification means includes
Notifying the electronic file indicated by the identification information stored in the history information associated with the selected electronic file,
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the electronic files notified by the notification means, and extracting a difference;
program. File storage means for storing a plurality of electronic files;
Of the electronic files stored in the file storage means, a difference extraction means for extracting a difference by comparing a plurality of electronic files selected by the user;
The means for associating each electronic file to be compared by the difference extraction means, and when comparing electronic files associated with history information including identification information for identifying the compared electronic files, Associating means for associating the history information and storing identification information for identifying the electronic file of the comparison partner in the history information ;
Notification means for notifying the electronic file indicated by the identification information stored in the history information associated with the selected electronic file when the user selects the electronic file associated with the association means; ,
Including
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the electronic files notified by the notification means, and extracting a difference;
Difference extraction system. A difference extraction means for extracting a difference by comparing a plurality of electronic files selected by a user among electronic files stored in a file storage means for storing a plurality of electronic files,
The means for associating each electronic file to be compared by the difference extraction means, and when comparing electronic files associated with history information including identification information for identifying the compared electronic files, An association means for associating the history information and storing identification information for identifying the electronic file of the comparison partner in the history information , and
Notification means for notifying the electronic file indicated by the identification information stored in the history information associated with the selected electronic file when the electronic file associated with the association means is selected by the user;
As a program for causing a computer to function as
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the electronic files notified by the notification means, and extracting a difference;
program. File storage means for storing a plurality of electronic files;
Of the electronic files stored in the file storage means, a difference extraction means for extracting a difference by comparing a plurality of electronic files selected by the user;
The means for associating each electronic file to be compared by the difference extraction means, and when comparing electronic files associated with history information including identification information for identifying the compared electronic files, An association means for associating the history information;
Notification means for notifying the electronic file indicated by the identification information stored in the history information associated with the selected electronic file when the user selects the electronic file associated with the association means; ,
Including
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the electronic files notified by the notification means, and extracting a difference;
Difference extraction system. A difference extraction means for extracting a difference by comparing a plurality of electronic files selected by a user among electronic files stored in a file storage means for storing a plurality of electronic files,
The means for associating each electronic file to be compared by the difference extraction means, and when comparing electronic files associated with history information including identification information for identifying the compared electronic files, Association means for associating the history information , and
Notification means for notifying the electronic file indicated by the identification information stored in the history information associated with the selected electronic file when the electronic file associated with the association means is selected by the user;
As a program for causing a computer to function as
The difference extraction means includes
Comparing the selected electronic file with the electronic file selected by the user from the electronic files notified by the notification means, and extracting a difference;
program.

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