JP2020048121A - History management device, history management program, and history management system - Google Patents

Abstract

To provide a history management device that can reduce the amount of accumulated output processing history data without compromising the completeness of history management as compared to a case where image format data is recorded as a history of output processing for all pieces of output processing when the history of document output processing on an output device is managed, a history management program, and a history management system.SOLUTION: A history management server records, as a log 26, output setting information set at the time of executing output processing and a link to a document management server 21 at the storage destination where a document 17 is stored. When the document 17 is deleted in the document management server 21, the history management server 11 reproduces an image log of the document 17 on the basis of the output setting information and the link, and records the image log as the log 26.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a history management device, a history management program, and a history management system.

  Patent Literature 1 discloses an image processing apparatus capable of communicating with a management server, including a storage unit that stores image data, an input job that reads a document, and stores the image data of the read document in the storage unit. A job execution unit capable of executing an output job for performing printing based on the image data stored in the storage unit by executing the input job; and, when the job executed by the job execution unit is an input job, The image data stored in the storage unit by execution is stored in the management server for each job as history information of the input job, and when the job executed by the job execution unit is an output job, printing is performed by executing the output job. Image data to be printed by executing the output job without storing the image data to be stored in the management server. The control is performed such that reference information for referencing image data stored in the management server by executing an input job corresponding to the output job as information indicating whether or not the output job is history information of the output job is stored in the management server for each job. An image processing apparatus having a storage control unit is disclosed.

JP 2010-193471 A

  When managing the history of document output processing in an output device such as a printer, from the viewpoint of monitoring the leakage of confidential documents, the image-format data generated by the output device during the output processing is used as the output processing history. It is preferable to record it. Here, the image format data refers to data in which the contents of a document are represented by a two-dimensional array of a plurality of pixel values, and is, for example, data of a raster image. By storing such image-format data as a history of output processing, it becomes possible to use this as evidence of whether or not a confidential document has been leaked.

  However, image format data has a larger file size than text data. Therefore, storing the image format data as the output processing history for all the output processing has a problem that the data amount of the output processing history increases as compared with the case where the text data is stored. .

  The present disclosure impairs the completeness of history management when managing the history of document output processing in the output device as compared with the case where image format data is recorded as the output processing history for all output processing. It is an object of the present invention to provide a history management device, a history management program, and a history management system that can reduce the amount of data of the history of output processing that is accumulated without any problem.

  In order to achieve the above object, a history management device according to claim 1, wherein in the output device that executes an output process for outputting a document, the setting content of the output process set when the output process is executed and the document are stored. A first recording unit for recording the storage destination information indicating the storage destination of the storage device that has been stored in the storage unit as a history of the output process, and input to the storage device after the output process is executed, and If an operation instruction for operating the document targeted by the operation is input as a result of performing an operation on the document and making the document inaccessible due to the storage destination information, the operation instruction is issued. A first obtaining unit that obtains, from the storage device, a notification indicating that a document has been input, and a document that has been subjected to an operation instruction before processing corresponding to the operation instruction is performed in the storage device when the notification is obtained. Store A second acquisition unit acquired from the device, and a document that is generated at the time of output processing based on the document and the setting content acquired by the second acquisition unit, and the display content of the document is represented by a two-dimensional array of a plurality of pixel values. A reproduction unit that reproduces the data in the expressed image format and a second recording unit that records the data in the image format reproduced by the reproduction unit as a history of the output process.

  The history management device according to a second aspect of the present invention is the invention according to the first aspect, further comprising a search unit that searches for storage destination information when the first recording unit records the history of the output process.

  A history management device according to a third aspect of the present invention provides a history management apparatus according to the second aspect, wherein a document to be output is input to a storage device via a terminal device and output to the output device. The unit searches for storage destination information including the identification information of the storage device based on the identification information of the document, the identification information of the user using the terminal device, and the processing date and time of the output process.

  According to a fourth aspect of the present invention, in the history management apparatus according to any one of the first to third aspects, a plurality of output processes are executed for documents having the same document identification information, and a plurality of output processes are performed. After the storage destination information is recorded in each of the output processing histories, when an operation instruction is input in the storage device, the reproduction unit performs processing based on the setting contents of each output processing included in a plurality of output processing histories. When the similarity of the data of a plurality of image formats to be reproduced is equal to or higher than a predetermined reference, the data of the image format is added to only one output processing history, and the remaining output processing history includes the image data. If the data of the format is not added and the similarity is less than the reference, the data of the image format is added to each of a plurality of output processing histories.

  According to a fifth aspect of the present invention, in the history management apparatus according to any one of the first to fourth aspects, the operation instruction includes an instruction to delete the document from the storage device and an instruction to update the content of the document. , And an instruction to change the storage location of the document in the storage device.

  According to a sixth aspect of the present invention, in the history management apparatus according to the fifth aspect, the document in the storage device is updated, and both the document before the update and the document after the update are stored in the storage device. In this case, a third acquisition unit is provided for acquiring the storage location information of the document before update from the storage device, and the first recording unit stores the storage location information included in the history of the output process in the third acquisition unit. Is changed to the storage location information of the document before update and the storage location information is changed, the second recording unit stores the image format of the document before update in the history of the output process. Do not add data.

  Further, in order to achieve the above object, a history management program according to claim 7, further comprising: an output device for executing an output process for outputting a document, wherein: Is stored in the storage unit as storage history of an output process, and storage location information indicating a storage location of the storage device in which is stored is input to the storage device after the output process is executed; When an operation instruction for operating the document subjected to the output processing is input, and as a result of the operation performed on the document, an operation instruction that makes it impossible to refer to the document due to the storage destination information is input, A first acquisition unit that acquires a notification indicating that an operation instruction has been input from the storage device, and, when the notification is acquired, becomes a target of the operation instruction before a process corresponding to the operation instruction is executed in the storage device. A second acquisition unit for acquiring the document from the storage device; and a display content of the document generated at the time of output processing based on the document and the setting content acquired by the second acquisition unit. And a second recording unit that records the data in the image format reproduced by the reproduction unit as a history of the output process, and a history management device including: Make your computer work.

  Further, in order to achieve the above object, a history management system according to claim 8 includes at least one storage device for storing a document and the history management device according to any one of claims 1 to 6. Including.

  According to the first, seventh, and eighth aspects of the present invention, when managing the output processing history of a document in an output device, the output processing history of image format data is output for all output processing. As compared with the case of recording as, the data amount of the accumulated output processing history can be reduced without impairing the comprehensiveness of the history management.

  According to the second aspect of the invention, there is a high possibility that accurate storage destination information of a document can be recorded.

  According to the third aspect of the present invention, it is possible to obtain storage destination information that allows direct access to a storage device in which a document is stored.

  According to the fourth aspect of the present invention, the data capacity can be reduced as compared with the case where image format data is recorded as the history of output processing for all output processing.

  According to the invention according to claim 5, in the storage device, it is possible to cope with a case where any of a document is deleted, updated, and a storage destination is changed.

  According to the invention according to claim 6, the amount of data can be reduced as compared with a case where image format data is recorded as a history of output processing for all output processing.

1 is a diagram illustrating an example of a configuration of a history management device and a history management system according to an embodiment. It is a block diagram showing an example of the electric composition of the history management device concerning an embodiment. FIG. 2 is a block diagram illustrating an example of a functional configuration of a history management device according to the embodiment. FIG. 6 is a diagram for explaining the content of processing of a link search unit according to the embodiment. 9 is a flowchart illustrating an example of a processing procedure of history management according to the embodiment. FIG. 7 is a diagram illustrating a first example of a process according to the embodiment. FIG. 9 is a diagram illustrating a second example of the process according to the embodiment. FIG. 14 is a diagram illustrating a third example of the process according to the embodiment. FIG. 14 is a diagram illustrating a fourth example of a process according to the embodiment. It is a figure showing the 5th example of processing concerning an embodiment. FIG. 8 is a diagram illustrating a state where an image log has been added to the first example illustrated in FIG. 7. FIG. 13 is a diagram illustrating a first modification of the processing according to the embodiment. 6 is a flowchart illustrating an example of a procedure for determining similarity of an image log according to the embodiment. FIG. 14 is a diagram illustrating a second modification of the process according to the embodiment.

  Hereinafter, an embodiment of a history management device and a history management system according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a history management system 10 as an example of the embodiment. As shown in FIG. 1, the history management system 10 includes a history management server 11 and at least one document management server 21. The history management server 11 is an example of a history management device. The history management system 10 is installed in a company, for example. The history management system 10 is communicably connected to a plurality of output devices 12, for example, and manages the history of output processing executed by the output devices 12.

  The document management server 21 has a document DB (database) 22 that stores the documents 17. The document 17 is created, for example, by the terminal device 19 used by employees in the company. The document 17 includes, for example, at least one of characters (including symbols and numbers), graphics, drawings, and tables. The document 17 created in the company is managed by the document management server 21, for example. The document 17 includes document data relating to the contents of the document 17 and additional information. The document data includes data representing text, graphics, drawings, tables, and the like. The supplementary information includes, for example, information on attributes of the document 17 such as a creator of the document 17 and a creation date and time. The document 17 is generated and stored as electronic data in various file formats according to the content of the document 17. The document management server 21 is an example of a storage device that stores the document 17 including the document DB 22.

  The document management server 21 is communicably connected to the terminal device 19 and receives an operation instruction for operating the document 17 input from the terminal device 19. The document management server 21 executes a process according to the content of the received operation instruction. The operation instructions include, for example, an instruction to store the document 17, an instruction to distribute the document 17, an instruction to delete the document 17, an instruction to update the document 17, and an instruction to move the document 17.

  When receiving the storage instruction of the document 17 from the terminal device 19, the document management server 21 stores the document 17 received from the terminal device 19 in the document DB 22. Further, the document management server 21 distributes the document 17 in the document DB 22 to the terminal device 19 based on a distribution instruction from the terminal device 19.

  Further, when receiving the instruction to delete the document 17 from the terminal device 19, the document management server 21 deletes the document 17 in the document DB 22. Further, when receiving the update instruction of the document 17, the document management server 21 updates the content of the document 17 in the document DB 22. For example, the document management server 21 replaces the pre-updated document 17 stored in the document DB 22 with the updated document 17 newly transmitted from the terminal device 19, thereby changing the content of the document 17 in the document DB 22. To update. Further, when receiving the instruction to move the document 17 from the terminal device 19, the document management server 21 changes the storage destination of the document 17 in the document DB 22. The move instruction is an example of an instruction to change the storage location of the document 17.

  The output device 12 is an example of an output device that executes an output process of outputting the document 17. The output device 12 has, for example, a print function and a facsimile (facsimile) function, and executes print processing and facsimile processing as output processing for outputting the document 17. Of course, the output device 12 may further have a copy function.

  The output device 12 receives, for example, an execution instruction of the output process from the terminal device 19 and executes the output process based on the content of the received execution instruction. For example, when the content of the execution instruction is printing, the output device 12 executes printing processing as output processing, and when facsimile, executes facsimile processing as output processing. When instructing execution of output processing via the terminal device 19, first, the document management server 21 receives the distribution of the document 17 to be output to the terminal device 19. Thereafter, the distributed document 17 and an instruction to execute output processing are transmitted from the terminal device 19 to the output device 12. The instruction to execute the output process includes the operator ID (Identification Data) of the terminal device 19.

  When executing the output process, the output device 12 outputs the first log 23 and transmits the output first log 23 to the history management server 11. The first log 23 includes an image log, which is a history in an image format, in addition to a history in a character format. Output processing such as print processing and facsimile processing performed by the output device 12 is processing for generating image format data in which the display content of the document 17 is expressed as an array of a plurality of pixels based on the electronic data of the document 17. including. The image log is an example of image format data generated based on the electronic data of the document 17 during the output processing. The image format data is, for example, bitmap format data or a raster image. The image log is, for example, data that can be used as evidence of whether or not a confidential document has been leaked when an unauthorized printing of the confidential document is performed on the output device 12 for the purpose of leaking the confidential document. It is.

  The history management server 11 has a log DB (database) 24. When receiving the first log 23 from each output device 12, the history management server 11 generates the second log 26 based on the received first log 23, and stores the generated second log 26 in the log DB 24. . As described later, the history management server 11 generates a link of the document 17 to be output, in principle, instead of the image log included in the first log 23. The link is storage location information indicating a storage location of the document 17 in the document DB 22, and is an example of storage location information including identification information of the document management server 21 which is an example of a storage device of the document 17. By using the link, the document 17 in the document DB 22 can be referred to, and even if there is no image log, the content of the document 17 subjected to the output processing is confirmed.

  The history management server 11 acquires a document operation notification from the document management server 21 as described later. The document operation notification is a notification that is input from the terminal device 19 to the document management server 21 and notifies the history management server 11 that a preset operation instruction among the operation instructions for the document 17 has been input. The operation instruction set in advance includes, for example, an instruction to delete, update, or move the document 17. As will be described later, when the history management server 11 acquires the notification of the document operation, it reproduces the image log based on the link, and records the reproduced image log as the second log 26 instead of the link.

  As shown in FIG. 2, an example of an electrical configuration of a history management system 10 according to the present embodiment is shown. The history management server 11 is configured by a general-purpose computer such as a server computer and a personal computer, for example. As shown in FIG. 2, the history management server 11 includes a main control unit 110, a communication unit 112, an input device 114, a display 116, and an external I / F (Interface) 118.

  The main control unit 110 includes a CPU (Central Processing Unit) 120, a memory 122, a storage device 124, a bus line 126, and an I / O (input / output interface) 128. The CPU 120, the memory 122, and the storage device 124 are connected via a bus line 126. An I / O 128 is connected to the bus line 126.

 The CPU 120 totally controls the history management server 11. The memory 122 is a volatile memory used as a work area or the like when executing various programs, and an example of the memory 122 is a random access memory (RAM). The storage device 124 stores, for example, a program for controlling basic operations of the history management server 11 and data such as various parameters. Examples of the storage device 124 include a hard disk drive (HDD), a solid state drive (SSD), an electrically erasable and programmable read-only memory (EEPROM), and a flash memory.

  The communication unit 112 is connected to the I / O 128 and the communication network 129. The communication unit 112 controls transmission and reception of information via the communication network 129. The communication network 129 includes a LAN (Local Area Network), the Internet, a WAN (Wide Area Network) using a public telephone line or a dedicated line, and the like.

  The external I / F (Inter Face) 118 is, for example, an interface such as an ATA (AT Attachment) standard connector and a USB (Universal Serial Bus) connector. In the external I / F 118, for example, a peripheral device such as an external storage device 132 in which the log DB 24 is stored is connected to a connector of the ATA standard.

  The display 116 is connected to the I / O 128, and displays various information including an operation screen constituting a GUI (Graphical User Interface) under the control of the CPU 120.

  The input device 114 includes a mouse, a keyboard, and the like, and is an input device for inputting operation instructions. The input device 114 is connected to the I / O 128, and the CPU 120 receives various operation instructions through the input device 114. The input device 114 is used, for example, for maintenance of the history management server 11.

  The storage device 124 stores an application program (AP) 130. The AP 130 includes a history management program that causes a computer to function as the history management server 11. The history management program included in the AP 130 is an example of an embodiment of the program according to the present invention.

  The document management server 21 is also configured by a general-purpose computer such as a server computer, for example. An example of the electrical configuration of the document management server 21 is also the same as that of the history management server 11, and a detailed description thereof will be omitted.

  In this example, a network storage device accessible via the communication network 129 may be used for the document management server 21 instead of a general-purpose computer. Examples of network storage devices include NAS (Network Attached Storage) and SAN (Storage Area Network).

  Note that, in the history management server 11 of this example, an example is described in which the log DB 24 is stored in the external storage device 132 connected to the external I / F 118. However, as the external storage device 132, a network storage device such as a NAS and a SAN that can be accessed via the communication network 129 may be used. Instead of storing the log DB 24 in a simple external storage device, the log DB 24 may be stored in a server computer such as a database server, like the document DB 22.

  The output device 12 includes an output unit 12A and an output control unit 12B. The output unit 12A performs a printing process and a facsimile process. When outputting the document 17, the output unit 12 </ b> A performs a process of generating image format data based on the document 17. The output device 12 is communicably connected to the history management server 11, the document management server 21, and the terminal device 19 via the communication network 129. The output control unit 12 </ b> B receives an output processing execution instruction input by the operator from the operation panel and the terminal device 19. The output control unit 12B controls the output unit 12A to execute the output process of the specified document 17 based on the content of the execution instruction. The output control unit 12B transmits the first log 23 to the history management server 11 when the output unit 12A executes the output processing.

  As shown as an example in FIG. 3, in the history management server 11, when the CPU 120 executes a history management program, which is one of the APs 130, the log acquisition unit 31, the link search unit 32, the first recording unit 33, the notification acquisition It functions as the unit 34, the document acquisition unit 36, the reproduction unit 37, and the second recording unit 38.

  The log acquiring unit 31 acquires the first log 23 by receiving the first log 23 transmitted from the output device 12. The first log 23 includes basic information and output setting information in addition to the image log.

  The basic information includes the file name of the document 17 subjected to the output processing, the operator ID of the operator using the terminal device 19, the output date and time, and the like. The file name of the document 17 is an example of document identification information (document ID), and the operator ID is an example of identification information of a user who uses the terminal device 19. The output date and time is an example of the processing date and time of the output process.

  The output setting information is an example of information indicating the setting contents of the output processing set when the output processing of the document 17 is performed in the output device 12. The output setting information includes, for example, the transmission source of the document 17, the designation of the page in the document 17 that has been subjected to the output processing, the color designation of color printing or monochrome printing, the output resolution, the paper size, and the length and width of the paper. The direction, the number of copies, and the like are included. In addition, the output setting information includes designation of whether to print a plurality of pages in the document 17 collectively on one sheet of paper, and the like.

  The log acquisition unit 31 transmits the acquired first log 23 to the link search unit 32 and the first recording unit 33. The first recording unit 33 generates the second log 26 based on the first log 23, and stores the generated second log 26 in the log DB 24. Specifically, the first recording unit 33 generates the second log 26 by performing editing such as addition and deletion of information based on the information included in the first log 23. The second log 26 includes basic information and output setting information in the first log 23.

  Further, for example, an OCR (Optical Character Reader) text and a link that are not included in the first log 23 are added to the second log 26. The OCR text is character information that is generated by performing an OCR process on the image log in the first log 23 and that represents the contents of the document 17.

  The link is storage location information in the document DB 22 of the document 17 to be output. The first recording unit 33 acquires a link from the link search unit 32. The first recording unit 33 adds the acquired link to the second log 26 instead of the image log included in the first log 23.

  As illustrated in FIG. 4, the link search unit 32 searches for a link of the document 17 based on, for example, basic information included in the first log 23. The basic information of the first log 23 includes the output date and time, the file name of the document 17, the transmission source of the document 17, and the operator ID.

  As shown in FIG. 4, the document 17 to be output may be input from the document management server 21 to the output device 12 via the terminal device 19. In such a case, the output device 12 directly receives the document 17 from the terminal device 19. Then, when viewed from the output device 12, the transmission source of the document 17 is the terminal device 19. In that case, the information of the transmission source in the first log 23 is indicated by a URL (Uniform Resource Locator) such as “http: /pc11.co.jp/file1”. This URL indicates that the document 17 having the file name “file1” is transmitted from the terminal device 19 having the terminal ID “pc11”. More specifically, the URL includes a directory name and a folder name indicating the storage location of the document 17 in the document DB 22, but is omitted for convenience.

  In this example, the original storage destination of the document 17 is the document management server 21. Therefore, when the document 17 is output from the output device 12, it is considered that the document 17 is distributed from the document management server 21 before the output date and time and close to the output date and time. Therefore, when searching for a link indicating the original storage location of the document 17, the link search unit 32 first obtains the distribution history 41 from the document management server 21. In the distribution history 41, a record indicating a history of each distribution process executed by the document management server 21 is recorded. Each record records a distribution date and time, a file name, an operator ID, and storage destination information. The operator ID is the ID of an operator who has instructed the document management server 21 to distribute the document 17 from the terminal device 19. The storage destination information is a link of the document 17 in the document management server 21 and is represented by a URL.

  The link search unit 32 collates the acquired distribution history 41 with the output date and time, the file name, and the operator ID in the first log 23, and determines which record in the distribution history 41 is in the first log 23. Specify whether the record corresponds to the file name. For example, the link search unit 32 determines in the distribution history 41 that the record matches the operator ID and the file name in the first log 23, and that the output date and time are close to the distribution date and time before the output date and time. Find a matching record. It is highly probable that a record that meets these conditions is a record corresponding to the file name of the document 17 in the first log 23.

  The link search unit 32 specifies a record corresponding to the file name of the first log 23 from within the distribution history 41 through such collation processing. In the example shown in FIG. 4, there is a record in the distribution history 41 in which the file name “file1” matches the operator ID “yamamoto”. The delivery date and time of this record is “2018/05/21/11: 32”, which is before the output date and time “2018/05/21/11: 40” of the first log 23, and the time zone between the output date and time and the delivery date and time. Is also close.

  The link search unit 32 reads out the URL recorded in the record specified in the distribution history 41 as a link indicating the original storage location of the document 17 corresponding to the first log 23. In this example, the URL is “http // filserver.co.jp / file1”, and the storage location of the document 17 is “fileserver” indicating the document management server 21 instead of the terminal device 19. The link search unit 32 searches for a link indicating the original storage location of the document 17 corresponding to the first log 23 in such a procedure. The link searching unit 32 transmits the searched link to the first recording unit 33.

  The first recording unit 33 reads information included in the first log 23 and deletes an image log from the read information. Instead, the searched link is added to the read information. Further, the first recording unit 33 also adds the OCR text generated from the image log. The first recording unit 33 performs information editing based on the first log 23 to generate the second log 26, and records the generated second log 26 in the log DB 24. As described above, the first recording unit 33 records the second log 26 as an example of the output processing history in the log DB 24 as an example of the storage unit. In the second log 26, output setting information which is an example of the setting contents of the output processing set when the output processing is executed in the output device 12, and a document management server which is an example of a storage device in which the document 17 is stored. And a link which is an example of storage location information indicating the storage location of the storage location 21.

  The history management server 11 refers to the document 17 in the document DB 22 by using the link in the second log 26 instead of the image log, and, if necessary, outputs the document to be output. 17 is acquired.

  In FIG. 3, the notification acquisition unit 34 acquires a notification of a document operation from the document management server 21. The notification of the document operation is transmitted from the document management server 21 to the history management server 11. The notification of the document operation is a notification that is input from the terminal device 19 to the document management server 21 and indicates that a preset operation instruction among the operation instructions for the document 17 has been input. Notification. The preset operation instructions include, for example, an instruction to delete, update, or move the document 17. An operation instruction such as an instruction to delete, update, or move the document 17 is an operation instruction that makes it impossible to refer to the document 17 by a link as a result of the operation. The document operation notification includes the file name of the document 17 for which the operation instruction has been issued. The notification acquisition unit 34 is an example of a first acquisition unit.

  Upon acquiring the document operation notification, the notification acquisition unit 34 reads the file name of the document 17 from the document operation notification. The notification acquisition unit 34 searches the second log 26 in the log DB 24 and checks whether there is a second log 26 including the notified file name. That is, when the notification obtaining unit 34 receives the notification of the document operation, the notification obtaining unit 34 checks whether the document 17 having the notified file name is the document 17 that has been subjected to the output process in the past.

  When the second log 26 including the notified file name is not found, the notification acquisition unit 34 determines that the document 17 having the notified file name has not been subjected to output processing in the past. In this case, the notification acquisition unit 34 performs no processing.

  On the other hand, when the second log 26 including the notified file name is found, the notification obtaining unit 34 determines that the document 17 having the notified file name has been subjected to the output process in the past. In this case, the notification acquisition unit 34 reads out the link recorded in the second log 26, specifies the link, and instructs the document acquisition unit 36 to acquire the document 17 to acquire the document 17. Send

  The document acquisition unit 36 accesses the document management server 21 using the link specified in the document acquisition instruction, and acquires the document 17. The document acquisition unit 36 transmits the acquired document 17 to the reproduction unit 37. When the document acquisition unit 36 acquires the notification of the document operation, the document acquisition unit 36 deletes the document 17 that is the target of the operation instruction before the process according to the operation instruction for the document 17 is executed in the document management server 21. 5 is an example of a second acquisition unit that acquires from a.

  The reproduction unit 37 reproduces an image log based on the document 17 acquired by the document acquisition unit 36 and the output setting information read from the second log 26.

  The second recording unit 38 records the image log reproduced by the reproduction unit 37 as the second log 26.

  Hereinafter, the operation of the history management server 11 according to the embodiment will be described with reference to the flowchart shown in FIG. 5 and the processing examples shown in FIGS. 6 to 10. When the history management server 11 starts, history management is started. When the history management is started, the history management server 11 waits for the first log 23 of the output processing of the document 17 transmitted from the output device 12, as shown in step S1001. When output processing such as printing or facsimile is executed in the output device 12, a first log 23 of the output processing is transmitted from the output device 12 to the history management server 11. When the history management server 11 receives the first log 23 through the log acquisition unit 31 (Y in step S1001), the log acquisition unit 31 transmits the first log 23 to the first recording unit 33 and the link search unit 32.

  On the other hand, if the first log 23 has not been received in step S1001 (N in step S1001), the CPU 120 proceeds to step S1009, and determines whether the termination condition has been satisfied. If the end condition is satisfied (Y in step S1009), the operation of the history management server 11 ends. If the termination condition is not satisfied (N in step S1009), the log acquisition unit 31 continues to wait for reception of the first log 23. Here, the termination condition is, for example, that an abnormality has occurred in the history management server 11 and an emergency stop is required, and an operation instruction to stop the history management server 11 has been input.

  In step S1002, the link search unit 32 collates the basic information of the first log 23 with the distribution history 41 acquired from the document management server 21 as shown in FIG. Search for a link that indicates. The link searching unit 32 transmits the searched link to the first recording unit 33.

  In the first log 23 received from the output device 12, the URL recorded as the transmission source of the document 17 indicates not the terminal device 19 but the document management server 21, which is the original storage destination of the document 17. In some cases. In this case, the link search unit 32 may determine the URL recorded in the first log 23 as a link of the document 17 without performing the link search process. This determination may be made by the first recording unit 33 instead of the link search unit 32.

  In step S1003, the first recording unit 33 edits information included in the first log 23, and generates a second log 26 to which a link is added instead of the image log. Specifically, the first recording unit 33 uses the basic information and the output setting information from among the basic information, the output setting information, and the image log included in the first log 23 as information of the second log 26, Delete the image log. On the other hand, the first recording unit 33 adds the link searched by the link search unit 32 to the second log 26. Further, the first recording unit 33 generates an OCR text based on the image log, and adds the generated OCR text to the second log 26. The first recording unit 33 records the generated second log 26 in the log DB 24.

  The example illustrated in FIG. 6 is an example of the second log 26 of each document 17 having the document IDs “D1”, “D2”, and “D3”. In FIG. 6, the second log 26 of “1-1” corresponds to “D1”, the second log 26 of “2-1” corresponds to “D2”, and the second log 26 of “3-1”. Corresponds to “D3”. Each second log 26 includes, in addition to the basic information, output setting information, an OCR text, and a link. Although the basic information is included in each second log 26 in FIG. 6, the display of the basic information is omitted for convenience.

  As described above, when the output processing is performed on the documents 17 of “D1” to “D3” in the output device 12, the second management of “1-1” to “3-1” is performed in the history management server 11. A log 26 is generated and recorded in the log DB 24.

  As shown in FIG. 6, in principle, each second log 26 does not include an image log. The image log has a larger data size than the text data. Since the image log is not recorded in the second log 26, the amount of data accumulated in the log DB 24 is reduced as compared with the case where the image log is recorded.

  In addition, as shown in FIG. 7, when the output process is performed a plurality of times for the document 17 having the same file name, the second log 26 is recorded for each output process. The example of FIG. 7 is an example in which output processing such as printing three times is performed on one document 17 of “D1”. The second log 26 corresponding to each of the three output processes is indicated by “log 1-1”, “log 1-2”, and “log 1-3”, respectively. Even in the case of the second log 26 of the output processing of the same document 17, the output setting information may be different. In addition, even in the case of the second log 26 of the output processing of the same document 17, if the pages to be output are different, the OCR text naturally differs. As for the link, the link in the second log 26 is the same as long as the document 17 is the same unless an operation such as deletion, update, or movement of the document 17 is performed in the document DB 22.

  Returning to FIG. 5, after the second log 26 is recorded in step S1003, the history management server 11 proceeds to step S1004 and waits for a document operation notification from the document management server 21. If a notification of a document operation has not been received, CPU 120 determines in step S1010 whether an end condition is satisfied. If the determination result is affirmative (Y in step S1010), the operation of the history management server 11 ends. If the result of the determination is negative (N in step S1010), the flow returns to step S1004 to continue waiting for receiving a notification of a document operation.

  When a preset operation instruction for the document 17 such as deletion, update, or movement is input, the document management server 21 sends a notification of a document operation with the file name of the document 17 to be subjected to the operation instruction, It is transmitted to the history management server 11. In step S1004, when the history management server 11 receives a document operation notification, the notification obtaining unit 34 obtains the received notification. Upon receiving the document operation notification, the notification obtaining unit 34 proceeds to step S1005.

  In step S1005, the notification acquisition unit 34 reads out the file name of the document 17 targeted for the operation instruction from the acquired document operation notification. Then, the notification acquiring unit 34 searches the log DB 24 for the second log 26 corresponding to the document 17 to be operated, using the notified file name as a search key. If the log DB 24 does not contain the second log 26 of the document 17 that is the target of the operation instruction (N in step S1005), the process proceeds to step S1010.

  As described above, the notification of the document operation is an operation instruction input to the document management server 21 after the output processing of the document 17 is performed. 17 is an example of a notification indicating that an operation instruction that makes it impossible to refer to No. 17 has been input;

  If the second log 26 corresponding to the document 17 targeted for the operation instruction is found (Y in step S1005), the notification acquisition unit 34 reads the link of the document 17 from the searched second log 26. The notification acquisition unit 34 transmits a document acquisition instruction with the read link to the document acquisition unit 36.

  In step S1006, upon receiving the document acquisition instruction, the document acquisition unit 36 accesses the document management server 21 to acquire the linked document 17. In this case, before the document management server 21 executes a process in accordance with the operation instruction of the document 17 input to the document management server 21, the document acquisition unit 36 From the document management server 21. For example, when the operation instruction of the document 17 is a deletion instruction, the document acquisition unit 36 acquires the document 17 that is the target of the operation instruction before the document management server 21 executes the deletion processing of the document 17.

  Thus, at a timing after the operation instruction is input and before the process according to the operation instruction is executed in the document management server 21, the history management server 11 acquires the document 17. The following procedure is taken as an example. First, after transmitting the document operation notification to the history management server 11, the document management server 21 waits for a response from the history management server 11 to the document operation notification for a preset time. During standby, the document management server 21 does not start processing according to the operation instruction (for example, deletion processing according to the deletion instruction). The standby time is set in advance in consideration of a processing time required for the history management server 11 to transmit a document acquisition instruction based on a document operation notification to the document management server 21.

  Thereby, the document acquisition unit 36 acquires the document 17 to which the operation instruction is specified by the notification of the document operation. The document acquisition unit 36 transmits the acquired document 17 to the reproduction unit 37.

  In step S1007, the reproduction unit 37 reads output setting information from the second log 26 corresponding to the acquired document 17. Then, the reproducing unit 37 reproduces the image log based on the acquired document 17 and the output setting information. The reproducing unit 37 transmits the reproduced image log to the second recording unit 38.

  In step S1008, the second recording unit 38 adds the reproduced image log to the second log 26 instead of the link.

  The processing example illustrated in FIG. 8 illustrates a case where a deletion instruction is input to the document management server 21 as an operation instruction. In FIG. 8, when a deletion instruction for the document 17 of “D1” is input, the history management server 11 acquires a document operation notification from the document management server 21. Based on the notification, the history management server 11 searches the log DB 24 for the second log 26 of “1-1” corresponding to the document 17 of “D1”. The history management server 11 acquires the document 17 of “D1” from the document management server 21 based on the link of “1-1” recorded in the second log 26 of “1-1”. Then, the history management server 11 reproduces the image log of “1-1” based on the acquired document 17 of “D1” and the output setting information of “1-1”. Then, the history management server 11 records the second log 26 of “1-1” to which the reproduced image log of “1-1” is added in the log DB 24.

  In the processing example illustrated in FIG. 8, while the document 17 of “D1” exists in the document management server 21, the link of “1-1” in the second log 26 of “1-1” is valid. The document 17 of “D1” can be referred to based on the link. Therefore, for example, when a problem in security management occurs through the output processing of the output device 12, such as a case where a confidential document is improperly printed and leaked to the outside, “D1” is determined based on the link “1-1”. Document 17 is referred to. As a result, the document 17 of “D1” of the reference destination is used as evidence of whether or not the leakage of the confidential document has been performed.

  In FIG. 8, when the document 17 of “D1” is deleted in the document management server 21 as indicated by a chain line, reference to the document 17 of “D1” becomes impossible depending on the link of “1-1”. In this case, the reproduced image log of “1-1” is added to the second log 26 instead of the link. After the image log is added instead of the link, the image log of “1-1” is used as proof that the confidential document has been leaked.

  The processing example illustrated in FIG. 9 illustrates a case where a movement instruction is input to the document management server 21 as an operation instruction. In the example illustrated in FIG. 9, as in the example illustrated in FIG. 8, while the document 17 of “D1” exists in the document management server 21, “1-1” in the second log 26 of “1-1” is used. Is valid, and the document 17 can be referred to based on the link “1-1”. However, when the document 17 of “D1” is moved in the document management server 21, the storage destination of the document 17 is changed from “storage destination 1” before the movement to “storage destination 2” after the movement. Since the link of “1-1” indicates the “storage destination 1” before the movement, the document 17 of “D1” cannot be referenced depending on the link of “1-1”.

  Therefore, also in the processing example illustrated in FIG. 9, when the movement instruction for the document 17 of “D1” is input, the history management server 11 performs “1-1” in the same procedure as the processing example illustrated in FIG. Reproduce the image log of The history management server 11 records the second log 26 of “1-1” to which the reproduced image log of “1-1” is added in the log DB 24.

  The processing example illustrated in FIG. 10 illustrates a case where an update instruction is input to the document management server 21 as an operation instruction. In the example illustrated in FIG. 10, similarly to the examples illustrated in FIGS. 8 and 9, while the document 17 of “D1” exists in the document management server 21, the link in the second log 26 of “1-1” is present. Is valid, and the document 17 can be referred to based on the link.

  However, when the content of the document 17 of “D1” is updated in the document management server 21, the storage location of the document 17 before the update may be changed. The storage destination is changed when the document 17 is updated, for example, when the content of the document 17 is updated, in order to save the document 17 before the update as a backup.

  In the example illustrated in FIG. 10, when the content of the document 17 of “D1” is updated, the document 17 before update is indicated as “D1-1” and the document 17 after update is indicated as “D1-2” for convenience. When the content of the document “D1” is updated, the document management server 21 stores the updated document “D1-2” and the document “D1” before inputting the update instruction. The data is stored in “storage location 1-1” which is the same storage location as the storage location. On the other hand, the document management server 21 sets the storage destination of the “D1-1” document 17 for backup before update to the “storage destination 1-1” of the “D1” document 17 before the update instruction is input. "To" storage destination 1-2 "which is another storage destination.

  Since the second log 26 of “1-1” is the history of the output processing for the document 17 of “D1-1” before the update, the link of the second log 26 of “1-1” is Even when updated, the storage location of “D1-1” before the update should be indicated. However, if the storage location of the document 17 of “D1-1” before the update is changed to “storage location 1-2” by updating the document 17 as in the example illustrated in FIG. The document 17 of “D1-1” cannot be referred to.

  Therefore, also in the processing example illustrated in FIG. 10, when the movement instruction for the document 17 of “D1” is input, the history management server 11 performs the same procedure as the processing example illustrated in FIG. Reproduce the image log of The history management server 11 records the second log 26 of “1-1” to which the reproduced image log of “1-1” is added in the log DB 24.

  In FIG. 5, after step S1008, the CPU 120 proceeds to step S1009, and repeats the above-described processing procedure until the operation of the history management server 11 ends (Y in step S1009).

  As described above, the history management server 11 according to the above-described embodiment first records, as the second log 26, the link to the document 17 that has been subjected to the output processing. Second, if the link makes it impossible to refer to the document 17 subjected to the output processing, the image log is reproduced, and the reproduced image log is recorded as the second log 26 instead of the link. . In the history management server 11, the data amount of the second log 26 stored in the log DB 24 is reduced as compared with the case where an image log is recorded as a history of all output processes. In addition, when the document 17 cannot be referred to by the link, the image log is reproduced as the second log 26, so that the comprehensiveness of the history management of the output process is not impaired.

  Further, in the history management server 11 according to the embodiment, when the first recording unit 33 records the second log 26 which is an example of the history of the output processing, the link search unit 32 uses the example of the storage destination information. Search for a link. Therefore, even when the first log 23 transmitted from the output device 12 does not include the storage location information indicating the storage location of the document 17, the history management server 11 can record the accurate storage location information of the document 17. Probability is high.

  In the above example, the output setting information included in the first log 23 includes a file name which is an example of the identification information of the document 17 and an operator ID which is an example of the identification information of the user who uses the terminal device 19. And an output date and time, which is an example of the processing date and time of the output process. The link search unit 32 checks the output setting information against the distribution history 41 of the document management server 21 to search for a link that is an example of storage destination information including the identification information of the document management server 21. As a result, even when the terminal device 19 is interposed between the document management server 21 and the output device 12, the history management server 11 accesses the document management server 21, which is the original storage destination of the document 17, to access the document. A link to reference 17 is obtained. Therefore, even when the terminal device 19 is interposed between the document management server 21 and the output device 12, there is no need to record an image log. The data amount of the second log 26 is reduced as compared with the case where an image log is recorded.

  In the above example, if there is no information indicating the storage location of the document 17 in the first log 23 and the link cannot be searched by the link search unit 32, the link cannot be recorded in the second log. In this case, the image log may be recorded in the second log from the stage when the first log 23 is received.

  In the above example, when an operation instruction such as a delete instruction, an update instruction, or a move instruction is input to the document 17 in the document DB 22, the document management server 21 becomes a target of the operation instruction. Regardless of whether the document 17 has been subjected to output processing in the past, a notification of the document operation is transmitted to the history management server 11. Therefore, the notification acquiring unit 34 searches the second log 26 based on the notified file name to check whether the document 17 that has been the target of the operation instruction has been the target of the output process in the past. .

  Instead of the notification acquisition unit 34 performing such processing, the document management server 21 may perform the processing. That is, when an operation instruction for the document 17 is input to the document management server 21, the document management server 21 accesses the log DB 24 of the history management server 11 and It is checked whether the document 17 has been subjected to output processing in the past. The document management server 21 transmits a document operation notification to the history management server 11 only when it is determined that the document 17 that has been the target of the operation instruction is the document 17 that has been subjected to the output process in the past.

  Note that, in the above example, the history of the document operation when the operation instruction for the document 17 is input to the document management server 21 is transmitted from the document management server 21 without inquiring from the history management server 11. The event notification method in which a notification is transmitted to the management server 11 has been described as an example. Instead of this method, the history management server 11 may acquire a document operation notification by a polling method in which the history management server 11 periodically inquires the document management server 21. Of course, the input timing of the operation instruction to the document 17 is irregular, so that the event notification method is preferable.

  Various modifications are possible for the recording method of the second log 26 in the history management server 11 according to the embodiment. A first modification will be described with reference to FIGS. The first modified example is an example on the premise that there are a plurality of second logs 26 for the same document 17 as shown in FIG.

  As illustrated in FIG. 7, when a plurality of output processes are performed on a document 17 having the same identification information (for example, a file name) of the document 17, a plurality of second logs 26 are recorded for each. In the example of FIG. 7, three second logs 26 of “1-1”, “1-2”, and “1-3” are recorded for the same document 17 of “D1”. Each link of “1-1”, “1-2”, and “1-3” is recorded in each second log 26. These links are the same as those of the document 17 of the same “D1”. They are the same because they indicate the storage destination.

  As shown in FIG. 11, when the document 17 of “D1” corresponding to the three second logs 26 shown in FIG. Document 17 cannot be referenced. When it becomes impossible to refer to the document 17 by the link in this manner, as described in the flowchart shown in FIG. 5, the second logs 26 of "1-1", "1-2", and "1-3" are used. The image log is reproduced based on the respective output setting information. As a result, as illustrated in FIG. 11, image logs “1-1”, “1-2”, and “1-3” are recorded for the three second logs 26, respectively.

  However, when the output setting information is similar, the reproduced image logs are similar. Therefore, for example, when the image logs in the plurality of second logs 26 are similar, the history management server 11 adds the image logs to only one second log 26 and adds the image logs to the other second logs 26. It is referred to from the log 26. Then, the data amount of the log DB 24 is reduced as compared with the case where the image logs are added to all the second logs 26.

  As shown in FIG. 12, when there are a plurality of second logs 26 corresponding to the same document 17, the history management server 11 reproduces an image log for each of the second logs 26. The necessity of reproducing the image log is determined for each second log 26 according to the log similarity. Such determination is performed by, for example, the reproduction unit 37. The reproduction unit 37 indirectly determines the similarity of the image log reproduced based on the output setting information by determining the similarity of the output setting information.

  In the example shown in FIG. 12, among the three second logs 26, the output setting information (“1-1”) of the second log 26 of “1-1” and the output setting information of the second log 26 of “1-2” The output setting information ("1-2") is similar. Therefore, the image log of “1-1” is reproduced only for the second log 26 of “1-1”, and the reproduced image log is added to the second log 26 of “1-1”. . An image link “IMG1-1”, which is a link for referring to the image log of “1-1”, is added to the second log 26 of “1-2”. No image log is added to the second log 26 of “1-2”. This prevents duplicate recording of similar image logs, so that the data amount of the log DB 24 is reduced as compared with the case where image logs are added to all the second logs 26.

  On the other hand, in the example shown in FIG. 12, the output setting information of the second log 26 of “1-1” (“1-1”) and the output setting information of the second log 26 of “1-3” (“1- 3 "). Therefore, an image log is reproduced for each of the second log 26 of “1-1” and the second log 26 of “1-3”. An image log of “1-1” is added to the second log 26 of “1-1”, and an image log of “1-3” is added to the second log 26 of “1-3”. You.

  FIG. 13 is a flowchart illustrating an example of a processing procedure of similarity determination of an image log in the example illustrated in FIG. When determining the similarity of the image logs, the reproducing unit 37 determines whether there are a plurality of second logs 26 for the same document 17 in step S2001. If there is only one second log 26 (N in step S2001), the reproduction unit 37 ends the process without performing the similarity determination.

  On the other hand, if there are a plurality of second logs 26 (Y in step S2001), the reproducing unit 37 proceeds to step S2002, and calculates the similarity of the output setting information in pairs for the plurality of second logs 26. I do. For example, the reproduction unit 37 compares the output setting information of each of the pair of second logs 26 of “1-1” and “1-2” as in the example illustrated in FIG. Calculate the similarity of the output setting information. Next, the output setting information of a pair of the second logs 26 of “1-1” and “1-3” is compared, and the similarity between the two pieces of output setting information to be compared is calculated.

  The similarity is calculated based on, for example, the assumption that the pages to be subjected to the output processing match, and for each comparison item such as resolution, for example, how much difference is determined based on the evaluation value in the case of perfect matching. If there is, how much the evaluation value is deducted is quantified. Then, the sum of the evaluation values for each comparison item is calculated as the similarity. Since the image log is evidence used to determine whether or not a confidential document has been leaked, it is preferable that the image log completely matches the image of the document 17 subjected to the output processing. In determining the similarity of the image logs, how much difference is allowed as the similarity range is appropriately set in consideration of the value as evidence.

  Next, in step S2003, the calculated set of similarities is compared with a preset reference. In step S2004, if the similarity is equal to or higher than the preset reference (Y in step S2004), the reproducing unit 37 proceeds to step S2005.

In step S2005, the reproduction unit 37 reproduces only one image log of the set of second logs 26, and adds the reproduced image log to only one second log 26.
The reproduction unit 37 does not add an image log to another second log 26.

  As shown in the example of FIG. 12, when the similarity of the output setting information of the pair of second logs 26 of “1-1” and “1-2” is equal to or higher than the reference, the process proceeds to step S2005, and “1 The image log is added only to the first log 26 of “1”.

  If the similarity is less than the reference (N in step S2004), the reproducing unit 37 determines that the images are not similar and proceeds to step S2006. In step 2006, the reproducing unit 37 reproduces each image log of the set of second logs 26, and adds the reproduced image logs to both the second logs 26.

  As shown in the example of FIG. 12, when the output setting information of the pair of second logs 26 of “1-1” and “1-3” is not similar, the process proceeds to step S2006, and “1-1” is performed. The image log is added to the second logs 26 of both “1” and “1-3”.

  The reproduction unit 37 repeats the above processing until the comparison of the similarity is completed for all sets (Y in step S2007). In this example, the similarity of the image log is indirectly determined based on the similarity of the output setting information. However, after the image log is reproduced based on the output setting information, the reproduced image is reproduced. The log similarity may be directly determined. In addition, the example in which the evaluation value of the similarity is quantified has been described, but a qualitative evaluation value such as low, medium, or high may be used. In this case, for example, if at least one of the comparison items is low, it is determined that the comparison items are not similar. For example, the determination is made based on the number of similar or dissimilar comparison items.

  As described above, a plurality of output processes are executed for the document 17 having the same identification information of the document 17 such as a file name, and the storage destination is stored in each of the plurality of second logs 26 which is an example of the history of the plurality of output processes. A link, which is an example of information, may be recorded. In this case, when an operation instruction such as a deletion instruction is input to the document management server 21 which is an example of a storage device, the reproduction unit 37 executes the following processing.

  First, the reproduction unit 37 is an example of data in a plurality of image formats reproduced by the reproduction unit 37 based on output setting information included in the plurality of second logs 26, which is an example of setting contents of each output process. When the similarity of a plurality of image logs is equal to or higher than a predetermined reference, the image logs are added to only one second log 26, and the image logs are not added to the remaining second logs 26. On the other hand, when the similarity of the image logs is less than the reference, the reproducing unit 37 adds the image logs to each of the plurality of second logs 26.

  Further, as a modified example of the processing example shown in FIG. 10, the processing may be performed as shown in FIG. In FIG. 10, when the document 17 is updated, it is impossible to refer to the document 17 by the link. Therefore, the image log is reproduced, and the reproduced image log is added instead of the link. On the other hand, in the processing example shown in FIG. 14, instead of reproducing the image log, the link is changed to respond.

  As illustrated in FIG. 14, when an update instruction for the document 17 of “D1” is input to the document management server 21, the document management server 21 sends an update notification as a document operation notification to the history management server 11. Send to When transmitting the update notification, the document management server 21 adds the information of the changed “storage destination 1-2” of the document 17 of “D1-1” before the update to the update notification.

  When acquiring the update notification, the notification acquisition unit 34 reads the “storage destination 1-2” changed from the update notification, and links the “1-1” link of the second log 26 “1-1”. Is changed to a new link of “1-2” indicating “storage destination 1-2”. Thereby, the document 17 of “D1-1” before the update is referred to based on the link of the second log 26.

  The first recording unit 33 is an example of the new storage location information of the document 17 of “D1-1” before the update acquired by the notification acquisition unit 34, the link “1-1” included in the second log 26. Is changed to the link of “1-2”. In addition, when a link in the second log 26 is changed, the second recording unit 38 does not add the image log of the document 17 before the update to the second log 26. As described above, when the document 17 is updated, the image log is omitted by changing the link to the link of the document 17 before the update. Therefore, the data amount in the log DB 24 is reduced as compared with the case where an image log is added.

  As described above, when the document 17 in the document management server 21 is updated and both the document 17 before the update and the document 17 after the update are stored in the document management server 21, the notification acquiring unit 34 It is an example of a third acquisition unit that acquires a link that is an example of storage destination information of the document 17 before updating from the document management server 21.

  As described above, the embodiment has described the history management server 11 as an example of the history management apparatus and the history management system 10 as an example of the history management system. The history management program has been described as an example of the AP 130. As an embodiment, a computer-readable storage medium that stores a history management program may be used. Examples of the storage medium include an optical disk such as a CD (Compact Disc) -ROM (Read-Only Memory) and a DVD (Digital Versatile Disc) -ROM, and a semiconductor memory such as a USB memory and a memory card. Further, the program may be obtained from an external device via a communication line.

  The configurations of the history management device, the history management system, and the history management program described in the above embodiment are merely examples, and may be changed according to circumstances without departing from the gist of the invention.

  The flow of the processing described in the above embodiment is also an example, and unnecessary steps may be deleted, new steps may be added, or the processing order may be changed without departing from the gist of the processing.

  Further, in the above embodiment, by executing the program, various processing units (first recording unit, first acquisition unit (notification acquisition unit), second acquisition unit (document acquisition unit), and reproduction unit according to the embodiment are executed. , And the second recording unit) are realized by the cooperation of the CPU and the software, but the present invention is not limited to this. All or a part of various processing units according to the embodiment may be realized by, for example, a programmable logic device such as an FPGA (Field-programmable Gate Array) and hardware such as an ASIC (Application Specific Integrated Circuit).

Reference Signs List 10 history management system 11 history management server 12 output device 12A output unit 12B output control unit 17 document 19 terminal device 21 document management server 22 document DB
23 First log 24 Log DB
26 second log 31 log acquisition unit 32 link search unit 33 first recording unit 34 notification acquisition unit 36 document acquisition unit 37 reproduction unit 38 second recording unit 41 distribution history 110 main control unit 112 communication unit 114 input device 116 display 122 memory 124 storage device 126 bus line 128 I / O
129 Communication network 132 External storage device

Claims (8)

In an output device that executes an output process of outputting a document, a setting content of the output process set when the output process is performed, and storage destination information indicating a storage destination of a storage device in which the document is stored, A first recording unit that records the history of the output processing in a storage unit;
An operation instruction input to the storage device after the execution of the output processing and for operating a document that has been subjected to the output processing. A first obtaining unit that obtains, from the storage device, a notification indicating that the operation instruction has been input, when an operation instruction that disables reference to the document is input by the destination information;
A second acquisition unit that, when acquiring the notification, acquires from the storage device a document that is a target of the operation instruction before a process corresponding to the operation instruction is executed in the storage device;
An image format generated at the time of the output process based on the document and the setting content obtained by the second obtaining unit, and the display content of the document is represented by a two-dimensional array of a plurality of pixel values. A reproduction unit that reproduces the data of
A second recording unit that records the data in the image format reproduced by the reproduction unit as a history of the output processing;
History management device equipped with   2. The history management device according to claim 1, further comprising: a search unit that searches for the storage destination information when the first recording unit records the history of the output process. 3. When the document to be output is input to the output device from the storage device via a terminal device,
The search unit searches for the storage destination information including the identification information of the storage device based on the identification information of the document, the identification information of a user using the terminal device, and the processing date and time of the output process. The history management device according to claim 2. After the plurality of output processes are executed for the document having the same identification information of the document, and the storage destination information is recorded in each of the plurality of output process histories, the operation instruction is input in the storage device. In the event that
If the similarity of the data in a plurality of image formats reproduced by the reproduction unit based on the setting contents of each of the output processes included in the history of the plurality of output processes is equal to or greater than a preset reference, one Only in the history of the output process, add the data in the image format, in the history of the remaining output process, without adding the data in the image format,
4. The history management device according to claim 1, wherein when the similarity is less than the reference, the data in the image format is added to each of the plurality of histories of the output processing. 5.   The operation instruction includes at least one of an instruction to delete the document from the storage device, an instruction to update the content of the document, and an instruction to change a storage location of the document in the storage device. Item 5. The history management device according to any one of Items 1 to 4. When the document in the storage device is updated and both the document before update and the document after update are stored in the storage device, the storage of the document before update from the storage device A third acquisition unit for acquiring destination information,
The first recording unit changes the storage location information included in the history of the output process to the storage location information of the document before the update acquired by the third acquisition unit, and
The history management according to claim 5, wherein when the storage destination information is changed, the second recording unit does not add the data of the image format of the document before the update to the history of the output process. apparatus. In an output device that executes an output process of outputting a document, a setting content of the output process set when the output process is performed, and storage destination information indicating a storage destination of a storage device in which the document is stored, A first recording unit that records the history of the output processing in a storage unit;
An operation instruction input to the storage device after the execution of the output processing and for operating a document that has been subjected to the output processing. A first obtaining unit that obtains, from the storage device, a notification indicating that the operation instruction has been input, when an operation instruction that disables reference to the document is input by the destination information;
A second acquisition unit that, when acquiring the notification, acquires from the storage device a document that is a target of the operation instruction before a process corresponding to the operation instruction is executed in the storage device;
An image format generated at the time of the output process based on the document and the setting content obtained by the second obtaining unit, and the display content of the document is represented by a two-dimensional array of a plurality of pixel values. A reproduction unit that reproduces the data of
A second recording unit that records the data in the image format reproduced by the reproduction unit as a history of the output processing;
A history management program that causes a computer to function as a history management device including a computer.   A history management system, comprising: at least one storage device for storing a document; and the history management device according to claim 1.