JP2007148544A - Document management device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document management device for classifying documents according to predetermined conditions, and for managing those documents by giving time stamps in a batch. <P>SOLUTION: This document management device 10 for managing a document file to which a time stamp for time authentication is given is provided with a document storage part 12 including a plurality of folders corresponding to predetermined classification conditions for classifying the document files; a classification part 28 for classifying the document files into a plurality of groups according to predetermined classification conditions based on the attribute information of the document files; a storage part 32 for storing the document files into the plurality of corresponding folders of the document storage part 12; and a time stamp acquisition part 48 for acquiring one time stamp for each folder. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a document management apparatus, and more particularly, to a document management apparatus that manages a plurality of documents by grouping them together and adding a time stamp for time authentication.

  In recent years, with the rapid digitization of documents, a mechanism for ensuring the authenticity of electronic documents is required. One of the mechanisms is TSA (Time-Stamping) based on an electronic signature issued by a certificate authority trusted by electronic documents and accurate time information delivered from a trusted TA (Time Authority). There is a method of giving a time stamp for time authentication issued by an authority (time authority).

  In general, a necessary number of time stamps charged for each predetermined number is purchased in advance by a contract between the TSA and the user. If necessary, the hash value of the document can be transmitted to the TSA to issue a time stamp, the time stamp can be received from the TSA, and the time stamp can be stamped on the document. Therefore, in order to reduce the number of time stamps, that is, to save time stamp costs, there is a demand for a technique for collecting a plurality of documents into one file and impressing the time stamp on the file.

As a technique for reducing the number of time stamps by combining a plurality of conventional files, for example, there is one described in Patent Document 1. This document describes a method for creating a single file by collecting hash values of a plurality of files to be certified for time authentication and making a time authentication request collectively for the entire file.
JP 2005-94146 A

  By the way, when an electronic document that requires long-term storage corresponding to the electronic document method is created and stored, it is necessary to add an electronic signature and a time stamp to the document. In general, the expiration date of electronic signatures and time stamps is about 1 to several years. Therefore, it is necessary to automatically extend the expiration dates of documents that need to be stored for a long time. In addition, since the long-term storage period varies depending on the document type, it is desirable that the document can be managed individually according to the document type.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a document management apparatus capable of managing documents by classifying documents according to predetermined conditions and collectively assigning time stamps. is there.

According to the present invention, a document management apparatus for managing a document file to which a time stamp for time authentication is assigned,
A document storage unit including a plurality of folders corresponding to a predetermined classification condition for classifying the document file;
A storage unit that classifies the document file into a plurality of groups according to the predetermined classification condition based on attribute information of the document file, and stores the group in the corresponding folders of the document storage unit;
And a time stamp processing unit that obtains one time stamp for each of the folders.

  According to the present invention, since time stamps can be collectively given to a plurality of document files, consumption of time stamps can be greatly reduced, and folders corresponding to preset classification conditions can be used. Since the document files can be distributed to each other, the document files can be automatically classified according to a predetermined classification condition, and the document management can be efficiently performed, which is convenient.

  In the document management apparatus, a condition storage unit that stores a predetermined application condition for applying the time stamp for each folder, a detection unit that detects a timing for applying the time stamp for each folder according to the application condition, The apparatus may further include an adding unit that adds the one time stamp acquired by the time stamp processing unit for each of the folders at the timing detected by the detection unit to the plurality of document files.

  According to this configuration, a plurality of document files can be accumulated in a folder, and time stamps can be automatically assigned to a plurality of document files stored in the folder at a timing set for each folder. Therefore, document management can be performed efficiently and convenience is good.

  In the document management apparatus, the adding condition may include a predetermined date and time or a predetermined cycle when the number of files and the total capacity of the plurality of document files in the folder exceed a predetermined value. According to this configuration, since the time stamp can be automatically assigned at the timing when the number of document files in the folder or a predetermined value or more is given for each folder, document management can be performed efficiently and conveniently. Good sex.

  In the document management apparatus, when the time stamp processing unit acquires the time stamp, the time stamp processing unit combines the plurality of document files stored in the folder in a predetermined arrangement order, and the combining unit combines A time stamp requesting unit that issues a time stamp to the time stamp issuing station for the plurality of document files, and receives the one time stamp from the time stamp issuing station, and the granting unit includes: The one time stamp acquired from the time stamp issuing station can be attached to the plurality of document files in the folder.

  Here, the time stamp issuing station generates a time stamp for time authentication based on accurate time information acquired from a reliable TA (Time Authority) and issues it to the client terminal. The communication protocol between the time stamp issuing station and the client terminal can be made compliant with, for example, the IETF RFC3161 (Time Stamp Protocol) standard. The client terminal transmits a hash value of the document, makes a time stamp issue request to the time stamp issuing station, and receives the time stamp. For example, the time stamp requesting unit can send a hash value of a file obtained by combining a plurality of document files to a time stamp issuing station to make a time stamp issuing request, and receive the time stamp. According to this configuration, a single time stamp can be given to a plurality of document files in a folder collectively.

  The document management apparatus may include a management table that stores the arrangement order of the plurality of document files by the combining unit in association with the folder. According to this configuration, since the arrangement order of the plurality of document files is stored at the time of verifying the time stamp, the verification can be performed even when the arrangement of the plurality of document files is changed from that at the time of adding the time stamp.

  In the document management apparatus, the storage unit may include an attribute acquisition unit that acquires attribute information including a creator, a file size, a file format, and a creation date of the document file from the document file, and the classification condition is The attribute information may be specified based on whether the attribute information is a predetermined value or a predetermined range, and the storage unit may classify the document file according to the classification condition based on the attribute information acquired by the attribute acquisition unit. it can.

  Here, attribute information such as the creator of the document file and the file size can be acquired from the information included in the document file and used for classification. For example, it can be classified into a folder for each creator or a folder for each creation date. Folders can also have a hierarchical structure. For example, it is also possible to create a folder for each creation date below the folder for each creator, and obtain one time stamp for each lowest folder.

  In the document management apparatus, the storage unit may include an attribute reception unit that receives attribute information including a document type of the document file, a document issue source, an issue destination, a keyword, and identification information of a manuscript reading worker. The classification condition can be specified based on whether or not predetermined information is included in the attribute information, and the storage unit is configured to store the document according to the classification condition based on the attribute information received by the attribute reception unit. Files can be classified.

  Here, the document type is, for example, a document type such as a contract, an estimate, or an invoice. Each document type can have a different retention period. Also, an arbitrary keyword can be given by the user and classified according to the keyword. The attribute accepting unit accepts attribute information input by the user by operating the operation unit, or automatically by optical character recognition (OCR) from a predetermined position of a document file created according to a predetermined format. It is also possible to accept information read in as attribute information.

  The document management apparatus may further include a recording unit that records the time stamp assignment status for each folder. According to this configuration, it is possible to record a time stamp assignment status for each folder, for example, information on a document that is currently waiting for time stamp assignment, information on a document that has already been given a time stamp, and the like. It is possible to confirm whether or not a time stamp has been given, which is convenient and improves reliability.

  The document management apparatus may further include a notifying unit that notifies the time stamp assignment status for each folder. According to this configuration, it is possible to notify the status of time stamp assignment for each folder, for example, information on a document that is currently waiting to be time stamped, or information on the document when a time stamp is given. Therefore, it is possible to confirm whether or not a time stamp has been reliably given even for a document that is not immediately given a time stamp when the document is created, which is convenient and improved in reliability.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  According to the present invention, there is provided a document management apparatus capable of classifying documents according to a predetermined condition and managing them by assigning time stamps collectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

  FIG. 1 is a functional block diagram showing a document management apparatus according to an embodiment of the present invention. The document management apparatus 10 according to the present embodiment is a document management apparatus that manages a document file to which a time stamp for time authentication is assigned, and includes a document including a plurality of folders corresponding to a predetermined classification condition for classifying the document file. Based on the attribute information of the storage unit 12 and the document file, the storage unit (the classification unit 28 and the storage unit) classifies the document file into a plurality of groups according to a predetermined classification condition and stores them in a plurality of corresponding folders in the document storage unit. Unit 32) and a time stamp processing unit (time stamp acquisition unit 48) for acquiring one time stamp for each folder.

  The document management apparatus 10 is, for example, a network scanner connected to the network 1 such as a LAN, an Internet facsimile apparatus, and an MFP (Multi Functional Peripheral). Alternatively, the document management apparatus 10 can include a personal computer or a workstation connected to a document storage unit that stores a document file that is subject to time authentication. The document management apparatus 10 receives a time stamp for time authentication from the TSA 3 via the network 1, and assigns a single time stamp to a plurality of document files at once. The TSA 3 generates a time stamp for time authentication based on accurate time information acquired from a reliable TA (not shown), and issues it to the document management apparatus 10 that is a client terminal. In FIG. 1, the configuration of parts not related to the essence of the present invention is omitted.

  Each component of the document management apparatus 10 includes an arbitrary computer CPU, memory, a program for realizing the components shown in the figure loaded in the memory, a storage unit such as a hard disk for storing the program, and a network connection interface. It is realized by any combination of hardware and software. It will be understood by those skilled in the art that there are various modifications to the implementation method and apparatus. Each drawing described below shows a functional unit block, not a hardware unit configuration.

  The document management apparatus 10 is realized by executing an electronic document management program, which will be described later, by a computer constituting an MFP, a personal computer, or the like. The document management program of the present embodiment is a document management program for managing a document file to which a time stamp for time authentication is given, and is a document storage including a plurality of folders corresponding to a predetermined classification condition for classifying the document file The computer (document management apparatus 10) having the unit 12 classifies the document file into a plurality of groups according to a predetermined classification condition based on the attribute information of the document file, and stores the document file in a plurality of corresponding folders in the document storage unit 12, respectively. It is for functioning as means for storing (classifying unit 28 and storing unit 32) and means for acquiring one time stamp for each folder (time stamp acquiring unit 48).

  Specifically, the document management apparatus 10 includes a document storage unit 12, a reading unit 14, a temporary storage unit 16, an attribute reception unit 18, an attribute assignment unit 20, an attribute acquisition unit 22, and a condition reception unit 24. A classification condition storage unit (shown as “classification condition” in the figure) 26, a classification unit 28, a folder creation unit 30, a storage unit 32, and an assignment condition storage unit (shown as “giving condition” in the figure) 40, a detection unit 42, a time stamp assigning unit 44, an interface unit (shown as “I / F” in the figure) 46, a time stamp acquisition unit 48, a recording unit 70, and a notification unit 72. Prepare.

  The document storage unit 12 stores a document file provided with a time stamp for time authentication acquired from the TSA 3 via the network 1. The document storage unit 12 can include a plurality of folders corresponding to predetermined classification conditions for classifying document files. Each document file is stored in one of the folders according to the classification condition. In accordance with a predetermined condition further specified for each folder, a plurality of document files in the folder are collectively given one time stamp. In this way, time stamp consumption can be reduced by collectively assigning time stamps to a plurality of document files in a folder. Each condition and folder will be described later.

  The reading unit 14 is, for example, a scanner, and reads an original as an image and generates an image file. The generated image file is temporarily stored in the temporary storage unit 16. Alternatively, instead of the reading unit 14, a user may select various document files from a document storage unit (not shown) that stores a plurality of documents in advance, and may include a reception unit (not shown) that receives the selected document file. it can. The document storage unit can be included in the document management apparatus 10 or can be included in an external storage device. The reception unit can also include a reception unit (not shown) that receives a document file via a network.

  The temporary storage unit 16 temporarily stores the image file generated by the reading unit 14 and the received document file. When the reading unit 14 reads a document, the attribute receiving unit 18 receives attribute information including a document type of the read document, a document issue source, an issue destination, an arbitrary keyword, and a document reading operator. The attribute information can be input by the user through the operation unit of the document management apparatus 10 or input from the list or the like. Alternatively, information automatically read from a predetermined position of a document file created according to a predetermined format by OCR or the like can be received as attribute information.

  The document type is, for example, a document type such as a contract, an estimate, or an invoice. Further, for example, the document issuer is the issuing department name or person in charge of the estimate, and the issue destination is the partner company name of the contract. In addition, for example, an estimated number, a destination, and the like can be automatically read from a document by OCR or the like and used as attribute information.

  The attribute assigning unit 20 temporarily stores the attribute information received by the attribute receiving unit 18 in the temporary storage unit 16 in association with the image file read by the reading unit 14 or the received document file. FIG. 2 shows an example of the structure of the file attribute information 50 of this embodiment. The file attribute information 50 can include a file name, file size, creation date and time, document type, worker, keyword, and the like.

  Returning to FIG. 1, the attribute acquisition unit 22 acquires the file attribute information 50 of the document file that is temporarily stored in the temporary storage unit 16. The attribute information acquired by the attribute acquisition unit 22 can include, for example, a document file creator, a file size, a file format, and a creation date and time. Based on the attribute information, for example, it can be classified into a folder for each creator or a folder for each creation date.

  The condition receiving unit 24 receives setting of conditions for classifying document files. For example, it is possible to set conditions for classifying a document according to a document file creator name, file size, file format, creation date, document type, issue source, issue destination, keyword, document reading worker, and the like. The classification condition can be specified by whether the attribute information is a predetermined value or a predetermined range. For example, a condition that the file size includes a file size greater than or equal to a predetermined value, or includes a file size less than a predetermined value may be included. Further, the classification condition can be specified by whether or not the attribute information includes predetermined information. For example, a condition such that the document type includes “estimate” can be included. In addition, the condition receiving unit 24 can receive a setting of a condition for giving a time stamp to a document file to be described later.

  The classification condition storage unit 26 stores the conditions received by the condition receiving unit 24. Specifically, for example, for each folder, the creator name and document type of the stored file are stored as classification conditions. Alternatively, the total capacity of files that can be stored and the upper limit of the number of files are stored as classification conditions for each folder. These classification conditions can be combined with a plurality of conditions. The classification unit 28 classifies the document file based on the attribute information of the document file acquired by the attribute acquisition unit 22 in accordance with the classification condition stored in the classification condition storage unit 26.

  The folder creation unit 30 creates a folder when a folder in which the document file classified by the classification unit 28 is to be stored does not exist in the document storage unit 12 or when the folder needs to be divided. Folder names can be created by adding serial numbers and the like in the order of creation, including classification conditions. In addition, information such as “added” may be included in the folder name so that a folder to which a time stamp is given by a time stamp assigning unit 44 described later can be identified. The storage unit 32 reads the document file classified by the classification unit 28 from the temporary storage unit 16 and stores it in the corresponding folder. At this time, the file attribute information 50 of the temporary storage unit 16 can also be stored in the document storage unit 12 in association with the document file.

  FIG. 3 is a diagram illustrating an example of the structure of the folder management table 60 of the document storage unit 12 according to the present embodiment. The management table 60 includes information associated with a plurality of folders provided in the document storage unit 12. Specifically, for each folder name 61, the management table 60 is stored in the folder classification condition 63, the grant condition 65, the time stamp assigned flag 67 indicating that a time stamp has been assigned, and the folder. The file names of the plurality of storage files 69 are stored together with the storage order. The classification condition 63 and the assignment condition 65 store which condition stored in the classification condition storage unit 26 and the assignment condition storage unit 40 is associated with the folder. The time stamp assigned flag 67 has an initial value “0”, and is set from “0” to “1” when the time stamp acquisition unit 48 succeeds in giving a time stamp.

  Returning to FIG. 1, the assignment condition storage unit 40 stores a predetermined condition for assigning a time stamp for each folder. The assignment condition can be a predetermined date and time and a predetermined cycle when the number of files of a plurality of document files in the folder and the total capacity exceed a predetermined value. The predetermined cycle can be designated, for example, on the first day of every month, every Monday, or every tenth day. As described above, the setting condition stored in the setting condition storage unit 40 can be received and stored for each folder by the condition receiving unit 24. The detection unit 42 detects the timing of applying a time stamp for each folder according to the application condition. This makes it possible to assign a time stamp to each folder at an appropriate timing in accordance with the assigning conditions specified for each folder.

  The time stamp assigning unit 44 requests the time stamp acquiring unit 48 to acquire a time stamp for each folder at the timing detected by the detecting unit 42, and batches the time stamp acquired by the time stamp acquiring unit 48 into a plurality of document files. To grant. The time stamp assigning unit 44 sets “1” to the time stamp assigned flag 67 of the management table 60 of the folder in which the time stamp has been successfully assigned.

  Specifically, the time stamp assigning unit 44, when acquiring the time stamp, combines a plurality of document files stored in the folder in a predetermined order and a combination unit (not shown) combined with the combination unit. A generation unit (not shown) that performs an electronic signature on the document file and generates a hash value of the electronically signed file. The hash value generated by the generation unit is transferred to the time stamp acquisition unit 48, and a time stamp acquisition instruction is issued. The arrangement order of the document files is indicated by the order of the files listed in the storage file 69 of the management table 60 in FIG. At a later date, verification can be performed in accordance with this arrangement order of a plurality of document files in the folder. In this embodiment, a plurality of document files are combined in advance to generate a hash value of the collected files, but the present invention is not limited to this. For example, there is a method in which hash values of a plurality of generated hash values are further generated after obtaining hash values of a plurality of document files.

  The interface unit 46 has a function of communicating with the TSA 3 via the network 1. The communication protocol between the TSA 3 and the document management apparatus 10 can be based on, for example, IETF RFC3161 (Time Stamp Protocol) standard. The time stamp acquisition unit 48 requests the TSA 3 to issue a time stamp via the interface unit 46, and receives the time stamp returned from the TSA 3 via the interface unit 46.

  The time stamp acquired by the time stamp acquisition unit 48 is transferred to the time stamp acquisition unit 48, added to the document file by the time stamp acquisition unit 48, stored in the document storage unit 12, and managed.

  In the present embodiment, the attribute receiving unit 18 and the condition receiving unit 24 include an operation unit and a display unit (not shown). In accordance with the operation menu displayed on the display unit, the user can input and accept attribute information, classification conditions, and grant conditions by operating the operation unit.

  The recording unit 70 records the status of time stamp assignment to the folder, including the result of the time stamp giving unit 44 performing the time stamp giving process. Specifically, the grant status refers to the name of the folder to which the time stamp is to be attached, the processing date and time, whether the time stamp has been successfully acquired or given, the file names contained in the folder, and their order of placement. Can be included. It can also include a schedule for giving or updating a time stamp.

  The notification unit 72 notifies the user of the status of giving the time stamp recorded in the recording unit 70. For example, a message indicating that a time stamp has been assigned is displayed on the display unit, or information indicating the grant status is displayed. Alternatively, an alarm sound or voice indicating that the time stamp has been given is output via a speaker. Further, a message for notifying a predetermined destination of a time stamp can be transmitted by a transmission unit (not shown) such as an email or an instant message. Alternatively, when the document management apparatus 10 is an MFP or the like, the notifying unit 72 creates a report on the grant status, and prints out a print output unit (at the time of granting a time stamp, when requested, periodically, or at a predetermined timing) It is also possible to print out from (not shown).

  The operation of the document management apparatus 10 of this embodiment configured as described above will be described below. First, the operation at the time of document file classification in the document management apparatus 10 of the present embodiment will be described. FIG. 4 is a flowchart showing an example of the operation at the time of document file classification in the document management apparatus 10 of the present embodiment. Hereinafter, description will be made with reference to FIGS.

  First, the reading unit 14 reads a document (step S11) and generates an image file (step S13). Hereinafter, the “image file” is referred to as a “document file”. Here, for example, it is assumed that an invoice for October is read. The user inputs the attribute information of the document read in step S11 using the operation unit, the attribute receiving unit 18 receives the attribute information, and the attribute assigning unit 20 temporarily stores the attribute information in association with the document file in the temporary storage unit 16 (step S11). S15).

  The attribute acquisition unit 22 acquires file attribute information 50 of the document file stored in the temporary storage unit 16, for example, the document type “invoice”, the creation date and time “October 1, 2005 10:30 AM”, and the like. Delivered to part 28. The classification unit 28 refers to the classification condition storage unit 26, classifies the document file according to the classification condition, and specifies a storage destination folder (step S17). For example, a folder with a folder name “invoice October” storing the document type “invoice” and the creation date “October” is specified. It is confirmed whether or not the folder specified in step S17 exists in the document storage unit 12, and if it does not exist (NO in step S19), the folder creation unit 30 creates a new folder in the document storage unit 12 (step S19). S21).

  When the folder specified in step S17 exists in the document storage unit 12 (YES in step S19), the storage unit 32 stores the document file temporarily stored in the temporary storage unit 16 in step S17 of the document storage unit 12. Store in the identified folder (step S23). When a new folder is created in step S21, the storage unit 32 stores it in the folder.

  In step S19, for example, when the total capacity or total number of a plurality of document files in the folder is equal to or greater than a predetermined value, a step of determining whether or not a condition for dividing the folder is specified is included. You can also. If the total capacity of the document files in the folder is greater than or equal to a predetermined value, a new folder is created in step S21 and the folder is divided. For example, the folders “Bill October-1” and “Bill October-2” are created. The document file stored in each folder is registered as waiting for time stamp processing (step S25). Specifically, file names are sequentially registered in the storage file 69 of the management table 60. At this time, “0” is set in the time stamped flag 67 of the management table 60.

  In this way, the plurality of document files stored in the predetermined folder of the document storage unit 12 is subsequently given a time stamp for each folder at a predetermined timing. The operation at the time of giving a time stamp in the document management apparatus 10 of the present embodiment will be described below. FIG. 5 is a flowchart showing an example of an operation at the time of giving a time stamp in the document management apparatus 10 of the present embodiment. Hereinafter, description will be made with reference to FIGS. 1, 3 and 5.

  First, the detection unit 42 accesses the management table 60 of the document storage unit 12, acquires a grant condition for the corresponding folder from the grant condition storage unit 40, and determines whether there is a folder that satisfies the acquired grant condition. (Step S31). If there is a folder that satisfies the granting condition (YES in step S31), the time stamp giving unit 44 is notified. The time stamp assigning unit 44 combines the document files in the notified folder in the arrangement order registered in the storage file 69 of the management table 60 (step S33). An electronic signature is applied to the combined file (step S35).

  Then, a hash value of the digitally signed file is generated (step S37) and transferred to the time stamp acquisition unit 48. The time stamp acquisition unit 48 transmits the hash value received from the time stamp assigning unit 44 to the TSA 3 via the interface unit 46, and requests issuance of a time stamp (step S39). Then, the time stamp returned from the TSA 3 is received by the time stamp acquiring unit 48 via the interface unit 46 and transferred to the time stamp giving unit 44.

  Then, the time stamp assigning unit 44 impresses a time stamp on the document file in the corresponding folder, and stores it in the document storage unit 12 (step S41). Then, the time stamp assigning unit 44 records information such as the folder to which the time stamp has been added to the recording unit 70, the document files stored in the folder, the arrangement order thereof, and the date and time of grant (step S43). Then, the notification unit 72 displays a message notifying that the time stamp is given on the display unit, prints out a report, outputs an alarm sound or voice from a speaker, or sends a mail to a predetermined destination. By sending a message, the status of time stamp assignment is notified.

  As described above, according to the document management apparatus 10 of the embodiment of the present invention, time stamps can be collectively given to a plurality of document files, so that time stamp consumption is greatly reduced. Document files can be assigned to the corresponding folders according to preset classification conditions, so that the document files can be automatically classified and grouped according to the predetermined classification conditions for efficient document management. Convenience is good.

  As mentioned above, although embodiment of this invention was described with reference to drawings, these are the illustrations of this invention, Various structures other than the above are also employable.

  For example, in the above-described embodiment, whether or not the time stamp is given is managed by the time stamp assigned flag 67 of the management table 60 for each folder, but is not limited thereto. A configuration may be adopted in which the folder is moved to another folder that stores the time stamped folder. Furthermore, folders can be further classified according to whether or not time stamp update monitoring is necessary.

  Further, when monitoring update of the time stamp, the expiration date of the time stamp can be included in the management table 60. An update unit that monitors the expiration date of the time stamp in the management table 60 and automatically acquires and assigns the time stamp a predetermined number of days before the expiration date can be included. In addition, by setting an update cycle in the above-mentioned grant conditions, it is possible to create and store an electronic document that requires long-term storage corresponding to the electronic document method. As an example of a long-term signature format corresponding to the electronic document method, there is one specified in IEEE RFC3126 (Electronic Signature Formats for long term electronic signatures).

It is a functional block diagram which shows the document management apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the structure of the file attribute information of the temporary memory part of FIG. FIG. 2 is a diagram illustrating an example of a structure of a folder management table in the document storage unit of FIG. 1. 3 is a flowchart illustrating an example of an operation at the time of document file classification in the document management apparatus of FIG. 1. 6 is a flowchart illustrating an example of an operation at the time of giving a time stamp in the document management apparatus in FIG. 1.

Explanation of symbols

1 Network 3 TSA
DESCRIPTION OF SYMBOLS 10 Document management apparatus 12 Document storage part 14 Reading part 16 Temporary storage part 18 Attribute reception part 20 Attribute grant part 22 Attribute acquisition part 24 Condition reception part 26 Classification condition storage part 28 Classification part 30 Folder creation part 32 Storage part 40 Grant condition storage Unit 42 detecting unit 44 time stamp adding unit 46 interface unit 48 time stamp obtaining unit 50 file attribute information 60 management table 61 folder name 63 classification condition 65 adding condition 67 time stamp added flag 69 storage file 70 recording unit 72 notifying unit

Claims (9)

A document management apparatus for managing a document file to which a time stamp for time authentication is attached,
A document storage unit including a plurality of folders corresponding to a predetermined classification condition for classifying the document file;
A storage unit that classifies the document file into a plurality of groups according to the predetermined classification condition based on attribute information of the document file, and stores the group in the corresponding folders of the document storage unit;
And a time stamp processing unit that acquires one time stamp for each folder. The document management apparatus according to claim 1,
A condition storage unit for storing a predetermined condition for assigning the time stamp for each folder;
A detection unit for detecting the timing of applying the time stamp for each of the folders according to the application condition;
An adding unit that adds the one time stamp acquired by the time stamp processing unit for each folder at the timing detected by the detection unit to the plurality of document files;
A document management apparatus further comprising: The document management apparatus according to claim 2,
The document management apparatus according to claim 1, wherein the assignment condition includes a predetermined date and time or a predetermined cycle when the number of files and the total capacity of the plurality of document files in the folder exceed a predetermined value. The document management apparatus according to claim 2 or 3,
The time stamp processing unit
A combining unit that combines the plurality of document files stored in the folder in a predetermined arrangement order when acquiring the time stamp;
A time stamp requesting unit that issues a time stamp to the time stamp issuing station for the plurality of document files combined by the combining unit, and receives the one time stamp from the time stamp issuing station;
Including
The document management apparatus, wherein the assigning unit assigns the one time stamp acquired from the time stamp issuing authority to the plurality of document files in the folder. The document management apparatus according to claim 4, wherein
A document management apparatus comprising: a management table that stores the arrangement order of the plurality of document files by the combining unit in association with the folder. The document management apparatus according to any one of claims 1 to 5,
The storage unit includes an attribute acquisition unit that acquires attribute information including a creator of the document file, a file size, a file format, and a creation date and time from the document file,
The classification condition is specified by whether the attribute information is a predetermined value or a predetermined range,
The document management apparatus, wherein the storage unit classifies the document file according to the classification condition based on the attribute information acquired by the attribute acquisition unit. The document management apparatus according to any one of claims 1 to 6,
The storage unit includes an attribute reception unit that receives attribute information including a document type of the document file, a document issuer, an issue destination, a keyword, and a manuscript reading worker,
The classification condition is specified by whether or not predetermined information is included in the attribute information,
The document management apparatus, wherein the storage unit classifies the document file according to the classification condition based on the attribute information received by the attribute reception unit. The document management apparatus according to any one of claims 1 to 7,
A document management apparatus, further comprising a recording unit that records a status of giving the time stamp for each folder. The document management apparatus according to any one of claims 1 to 8,
A document management apparatus, further comprising: a notification unit that notifies the status of giving the time stamp for each folder.

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