JP5211973B2 - Information distribution grasping system, information distribution grasping server, information distribution grasping method, and information distribution grasping program - Google Patents

Description

  The present invention relates to an information distribution grasping system, an information distribution grasping server, an information distribution grasping method, and an information distribution grasping program, and in particular, an information distribution grasping system, an information distribution grasping server for grasping a distribution route of information using a paper medium The present invention relates to an information distribution grasping method and an information distribution grasping program.

  In recent years, information leakage has occurred in a wide range due to the development of IT systems, which is a big problem. Information leakage includes leakage due to electronic documents and leakage due to paper documents, and various countermeasures are taken by security technologies such as user authentication and access control for information leakage due to electronic documents. On the other hand, it cannot be denied that measures against information leakage due to paper documents are delayed.

Conventionally, as countermeasures against information leakage by paper documents, a psychological deterrent effect by adding a secret stamp has been expected. In addition, a technique for adding information on when and by whom printing or copying was performed to an output sheet during printing or copying has been proposed (see, for example, Patent Document 1).
In addition, since information has been transmitted over a wide range due to the development of IT systems, users (users) who have been involved with certain information have desired to be able to grasp the distribution route of the information, not for security purposes.
Japanese Patent No. 3265621

  In the above-described prior art, when information is leaked or transmitted by an electronic document, the information leakage (transmission) source and leakage (transmission) destination are analyzed from user authentication records, access control records, communication records, and the like. Was possible. However, when information is leaked by a paper document, there is a problem in that the distribution route cannot be grasped by analyzing the leakage source and leakage destination of the information.

  The present invention has been made in view of the above points. An information distribution grasping system, an information distribution grasping server, an information distribution grasping method, and an information distribution grasping program capable of grasping a distribution route of information using paper as a medium at higher speed. The purpose is to provide.

In order to solve the above problems, the present invention provides an information distribution grasping system for grasping a distribution route of information using paper as a medium, and based on paper identification information for uniquely identifying the paper detected from the paper. and searching means for searching further newly derived distribution channel from the history information indicating the result of the flow path of the information analyzed previously, on the basis of the search result obtained by the searching means and said history information, analyzed the have a analyzing means for analyzing the distribution channel of the information of the paper, said retrieval means, recorded after the search date and time indicated in the history information corresponding to the paper identification information of the analysis target of the paper, the paper A log in which information indicating that image processing has been performed as a medium, paper identification information detected from the paper, and paper identification information of paper derived from the image processing are stored in association with each other in advance. Affection When the paper identification information indicating the distribution route of the history information is retrieved from the accumulated log information, the analysis unit retrieves the paper identification information indicating the distribution route of the history information. Further, the paper identification information of the derived paper is added to the retrieved paper identification information of the history information .

In order to solve the above problems, the present invention provides an information distribution grasp server that grasps a distribution route of information using paper as a medium, and uniquely identifies the paper detected from the paper based on a request from a client. Based on the paper identification information to be identified, search means for searching for a newly derived distribution route from history information indicating the result of the distribution route of the information previously analyzed, the search result obtained by the search means, Analysis means for analyzing the distribution route of the information on the paper to be analyzed based on the history information, and client communication means for communicating with the client . Information recorded after the search date and time indicated in the history information corresponding to the paper identification information, and indicating that image processing has been performed using paper as a medium; paper identification information detected from the paper; Searching for paper identification information indicating the distribution route of the history information from log information accumulated in advance associated with paper identification information of the paper derived from the image processing, and the analyzing means When the paper identification information indicating the distribution route of the history information is retrieved from the accumulated log information by the retrieval means, the paper identification information derived from the retrieved paper identification information of the history information. It is characterized by adding .

Furthermore, as a means for solving the above problems, the present invention is an information distribution grasping method for grasping a distribution route of information using paper as a medium, which is executed by a computer, and is detected from the paper by the computer. based on said uniquely identifying the paper identification information sheet that, a search procedure to find further new derived distribution channel from the history information indicating the result of the flow path of the information analyzed previously, by the computer, the search based search results obtained by the procedure in said history information, possess the analyzing procedure for analyzing the distribution channel of the information to be analyzed in the paper, the search procedure, the paper identification information of the analysis target of the paper Information indicating that image processing has been performed using paper as a medium, paper identification information detected from the paper, Paper identification information indicating a distribution route of the history information is searched from log information accumulated in advance in association with paper identification information of paper derived from image processing, and the analysis procedure includes the search When the paper identification information indicating the distribution route of the history information is retrieved from the accumulated log information by the procedure, the paper identification information of the derived paper with respect to the retrieved paper identification information of the history information It is characterized by adding .

  Furthermore, as a means for solving the above-described problems, the present invention may be a program that causes a computer to execute the procedure in the information distribution grasping method.

  According to the present invention, it is possible to grasp a distribution route of information using paper as a medium at higher speed.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of an embodiment of a document distribution grasping system. 1 is an example of an information distribution grasping system. The document distribution grasping system in FIG. 1 has a configuration in which a tracking server 10, a client PC 20, a printer 30a, and multifunction devices 30b to 30e are connected so as to be capable of data communication via a network such as a LAN.

  1, the electronic document stored in the client PC 20 is printed as a paper document 40a from the printer 30a by the operation of the user A, and the paper document 40a is printed as the paper document 40b by the printer 30b by the operation of the user B. The paper document 40a is copied as a paper document 40c by the printer 30c by the operation of the user C, the paper document 40b is copied by the user 30 as the paper document 40d by the operation of the user D, and the paper document 40b is copied by the operation of the user E. It is copied as a paper document 40e by the printer 30e.

  The document distribution grasping system shown in FIG. 1 acquires the distribution route of a document printed by, for example, the user A from the tracking server 10 from the client PC 20 when printing and copying as described above are performed. This shows an example in which the user A grasps the distribution route of the document.

  The document distribution grasping system shown in FIG. 1 roughly performs processing related to a recording step and a tracking step. The recording step is a step of recording a tracking log when the document is actually distributed. The tracking step is a step of grasping the distribution route of a certain paper document by searching the tracking log recorded in the recording step.

  The recording step is a paper identifier that uniquely identifies a paper used as an information medium by an image processing apparatus that handles an image relating to a paper document, such as a printer, a copier, a scanner, or a multifunction machine, by printing, copying, or scanning. And the operation information related to the image processing for the paper is recorded as a tracking log in association with each other.

  The operation information related to the image processing includes the contents of the processing (for example, printing, copying, scanning, etc.), the date and time when the processing was performed, the identification information (for example, user ID) of the user who performed the operation, and the paper described later Information required in the tracking step is included, such as an identifier, a parent paper identifier, and identification information (for example, device ID) of the image processing apparatus that has performed the processing.

  Also, the identifier of the sheet needs to be detectable from the sheet. In this embodiment, a paper document and a paper phrase are distinguished from each other. A paper document is a document (for example, a character, a figure, a photograph (image), etc.) transmitted using paper as a medium. The paper is paper that serves as a medium (recording medium) for transmitting a paper document (information). Accordingly, the sheet identifier is information that uniquely identifies each sheet, and indicates, for example, a background pattern, a paper pattern, or the like. Therefore, the paper identifiers are different even for the same paper document.

  Each time a paper document is input (scanned) or output (printed) using paper as a medium, each image processing apparatus stores the identifier of the paper used as the paper document medium and operation information related to image processing to the tracking server 10. Send in a timely manner. In the tracking server 10, a sheet identifier transmitted from each image processing apparatus, operation information related to image processing on the sheet, and the like are accumulated as a tracking log.

  On the other hand, the tracking step is a step of presenting a distribution route or the like of a certain paper document to the user. The tracking step searches the tracking log recorded in the recording step based on the identifier of the paper used as the medium of the paper document, thereby providing the paper document distribution route (where the paper document has been distributed) ) And a distribution destination (where the distribution has been made).

  In the document distribution grasping system in FIG. 1, a case where a distribution route of paper documents is presented to the user A is shown. The tracking server 10 analyzes the distribution route of the paper document by searching the accumulated tracking log based on the identifier of the paper used as the paper document medium, and transmits the analysis result to the client PC 20. The client PC 20 displays an analysis result such as a display. In this way, the user A can grasp the distribution route for a certain paper document.

<Recording step>
FIG. 2 is a block diagram of an example of a tracking log recording system that realizes the recording step. The tracking log recording system 1 in FIG. 2 represents functional blocks of a multifunction machine 30 that is an example of a tracking server 10 and an image processing apparatus. Hereinafter, a flow of processing when the user performs a copy operation in the multifunction machine 30 will be described.

  The tracking log system 1 is configured to include a tracking server 10 and one or more multifunction devices 30 connected to each other via a network such as the Internet or a LAN (whether wired or wireless). The multifunction device 30 is an example of the printer 30a, the multifunction devices 30b to 30e, etc. in FIG. Therefore, the component of the tracking log recording system 1 is not necessarily the multi-function device 30 and may be a printer, a copier, a scanner, a facsimile, or the like.

  In the present embodiment, an example in which a paper pattern is used as a feature amount (paper identification information) provided in advance on a sheet will be described. For detection and collation of paper pattern data, a technique described in “Nature Vol 436 28 July 2005 P475” (hereinafter referred to as Reference Document 1) may be used.

  In FIG. 2, the multifunction device 30 includes a job control unit 31, an operation information collection unit 32, a scanning unit 33 a and a scanning unit 33 b, a printing unit 34, a tracking log creation unit 35, and a communication unit 36. It is configured. In addition, when any of the scanning part 33a and the scanning part 33b may be sufficient, it is named the scanning part 33 generically.

  Each unit such as the job control unit 31, the operation information collection unit 32, the scan unit 33 a and the scan unit 33 b, the printing unit 34, the tracking log creation unit 35, and the communication unit 36 that configure the multi-function device 30 of FIG. The programs installed in the computer function by being processed by the CPU of the multifunction machine 30. The program may be downloaded via a network, or may be installed from a recording medium 500 such as a CD-ROM or an SD memory card.

  The job control unit 31 controls the overall processing flow related to a job (copying, printing, scanning, or the like) instructed by the user. The operation information collection unit 32 collects operation information related to image processing such as input of information from a paper document or output of information to a paper document. For example, as the operation information, the date and time when the operation (printing, copying, scanning, etc.) was performed, the user ID of the user who issued the operation instruction, the device ID of the multifunction device 30, and the like are collected.

  The scanning unit 33a includes an image reading unit 331a, a paper pattern detection unit 332a, and the like. The scanning unit 33b includes an image reading unit 331b, a paper pattern detection unit 332b, and the like. The image reading unit 331a and the image reading unit 331b have the same function. The paper pattern detection unit 332a and the paper pattern detection unit 332b have the same function. Therefore, the image reading unit 331a and the image reading unit 331b are collectively referred to as an image reading unit 331. The paper pattern detection unit 332a and the paper pattern detection unit 332b are collectively referred to as a paper pattern detection unit 332.

  The image reading unit 331 controls the scanner of the image processing apparatus 30 and inputs paper document information (image) (optically reads). The paper pattern detection unit 332 controls the paper pattern detector included in the image processing apparatus 30 and causes the paper pattern detector to detect the paper pattern of the paper when the paper document is read by the scanner. The paper pattern detector detects unevenness of the paper pattern which is a random pattern of plant fibers on the surface of the paper. The information detected here corresponds to a paper print.

  In this embodiment, the paper pattern is used as an identifier (paper identifier) for uniquely identifying the paper of the paper document. This is because the paper crest forms a unique pattern for each paper like a human fingerprint and is therefore suitable as an identifier for uniquely identifying the paper. The paper pattern is not added to the paper by re-processing the paper, and the paper pattern is used as an identifier in the point that the paper is a feature amount provided in advance. Suitable for implementation. Note that the paper pattern is described in detail in Reference Document 1.

  Note that two scanning units 33 are described because, in general multi-function peripherals, images are read with contact glass and ADF (Auto Document Feeder), and thus many scanners are mounted. is there. Therefore, the number of scanning units 33 is not limited to two, and may be one or may be three or more.

  The printing unit 34 includes an image drawing unit 341, a paper pattern detection unit 342, and the like. The image drawing unit 341 controls the plotter of the image processing apparatus 30 to output (print) information (image) on output (printing) paper to be output (printed). The paper pattern detection unit 342 causes the paper pattern detector of the image processing apparatus 30 to detect the paper pattern of the printing paper on which the image is printed. It should be noted that the paper pattern detection unit 332 of the scanning unit 33 and the paper pattern detection unit 342 of the printing unit 34 take into consideration that the paper pattern can always be detected from the same position of the paper so that the difference in the paper can be identified in the tracking step. .

  For example, in scanning using printing or ADF, a paper pattern detector may be installed in the middle of the paper conveyance path so as to detect the paper pattern in accordance with the timing of paper passage. In the case of scanning using contact glass, a paper pattern detector may be installed so that a paper pattern at the same location on the paper can be detected.

  The tracking log creation unit 35 includes the operation information related to image processing collected by the operation information collection unit 32, the paper pattern of the scanned paper detected by the paper pattern detection unit 332 of the scanning unit 33, and the paper pattern of the printing unit 34. A tracking log is generated in a predetermined format based on at least one of the paper crests of the printing paper detected by the detection unit 342. The communication unit 36 transmits the tracking log to the tracking server 10 via the network.

  On the other hand, the tracking server 10 is configured to include a communication unit 11, a tracking log management unit 12, and a tracking log storage unit 13. The communication unit 11 receives a tracking log from each device connected via a network. The tracking log storage unit 13 stores the tracking log by recording the received tracking log in a storage device or the like of the tracking server 10 in a predetermined format. The tracking log management unit 12 analyzes the distribution route of the paper document based on the tracking log stored by the tracking log storage unit 13.

  The communication unit 11, the tracking log management unit 12, and the tracking log storage unit 13 that configure the tracking server 10 of FIG. 2 are such that programs installed in the tracking server 10 are processed by the CPU of the tracking server 10. It works by. The program may be downloaded via a network, or may be installed by a recording medium 510 such as a CD-ROM or an SD memory card.

  Hereinafter, the processing procedure of the tracking log recording system of FIG. 2 will be described. 3 and 4 are sequence diagrams illustrating an example of tracking log recording processing by the tracking log recording system. 3 and 4, a tracking log recording process that is executed when a copy of a paper document is instructed in the multifunction machine 30 will be described.

  In this embodiment, the copy job includes a scan process for scanning an image from a paper document and a print process for printing the scanned image on a print sheet. The sequence diagram of FIG. 3 corresponds to the scan process. The sequence diagram of FIG. 4 corresponds to the printing process. The scanner or printer is the same as the multifunction device 30 if it is considered to be an apparatus that does not perform printing processing or scanning processing, and detailed description thereof is omitted here.

  For example, the user A sets a paper (original paper) on which a paper document is printed on the ADF or the contact glass of the multifunction machine 30 and operates the operation panel to instruct execution of copying (S101). The job control unit 31 instructs the image reading unit 331 to read a document (S102). The job control unit 31 instructs the paper pattern detection unit 332 to detect the paper pattern of the original paper (S103). In response to an instruction from the job control unit 31, the image reading unit 331 controls the scanner of the multifunction machine 30 to read an image of a paper document from image paper (S104).

  The image reading unit 331 generates image data indicating the read image, and stores the image data in a storage device such as an HDD of the multifunction machine 30 (S105). The image reading unit 331 transmits information (image ID) that uniquely identifies the generated image data to the job control unit 31 as a response to the reading instruction in S102 (S106).

  On the other hand, in parallel with the image reading by the image reading unit 331, the paper pattern detection unit 332 controls the paper pattern detection device of the multifunction machine 30 to detect the paper pattern of the original paper (S107). The paper pattern detection unit 332 transmits the detected paper pattern to the job control unit 31 as a response to the paper pattern detection instruction in S103 (S108).

  In response to the operation information collection instruction, the job control unit 31 notifies the operation information collection unit 32 of the processing content, the image ID of the image data read from the original paper, and the paper pattern of the original paper (S109). The content of the process represents a scan in the copy operation. The operation information collection unit 32 collects the date and time when the operation was performed, the user ID of the user who issued the operation instruction, the device ID of the MFP 30, the job ID, and the like (S110).

  The operation information collection unit 32 includes information such as the date and time when the collected operation was performed, the user ID of the user who issued the operation instruction, the device ID and job ID of the MFP 30, and the processing notified from the job control unit 31. The contents, the image ID of the image data read from the manuscript paper, and the information such as the paper pattern detected from the manuscript paper are combined and transmitted as operation information to the tracking log creating unit 35 (S111). Of the operation information, the user ID may be acquired based on the authentication function of the multifunction device 30. The device ID may be the MAC address, IP address, serial number, or the like of the multifunction machine 30.

  As an authentication function of the MFP 30, a method for inputting user identification information (such as a user ID and a password) using a user I / F unit, a user identification information recorded on an IC card using an IC card The method etc. which input is possible.

  The tracking log creation unit 35 generates a tracking log in a predetermined format based on the information received from the operation information collection unit 32 (S112). The tracking log creation unit 35 transmits the generated tracking log to the tracking server 10 via the communication unit 36 as a log of scan processing during the copy operation (S113, S114). When the communication unit 11 of the tracking server 10 receives the tracking log from the multifunction machine 30, the communication unit 11 transmits the received tracking log to the tracking log storage unit 13 (S115). The tracking log storage unit 13 stores the received tracking log in a storage device such as an HDD of the tracking server 10 (S116).

  FIG. 5 is a configuration diagram illustrating an example of a tracking log related to scan processing. The tracking log L1 in FIG. 5 includes the time (or date and time) when the operation was performed, the name of the user who performed the operation, the paper pattern of the paper that was the operation target, the contents of the process, the image ID, and the like. The tracking log L1 in FIG. 5 corresponds to that stored in the process of S116 in FIG.

  As shown in FIG. 5, the paper pattern “C” in the tracking log L <b> 1 indicates a paper pattern detected from the original paper. The processing content “Scan (copy)” indicates a scanning process in the copy job. The image ID indicates the image ID of the image data read from the document sheet. For convenience, “C” of the paper print represents a paper print with a code instead of information representing the paper print. This notation is the same in the following. Note that the device ID of the multifunction machine 30 may be included in the tracking log L1.

  When the scan process is completed, the job control unit 31 instructs the image drawing unit 341 to print the image data by notifying the image drawing unit 341 of the image ID (S151). The job control unit 31 instructs the paper pattern detection unit 342 to detect the paper pattern of the printing paper (S152).

  In response to an instruction from the job control unit 31, the image drawing unit 341 acquires image data from the storage device based on the image ID, and controls the printer of the multifunction device 30 to print the image data on the printing paper (S153). . When printing is completed, the image drawing unit 341 transmits to the job control unit 31 that printing of image data has been completed (S154).

  On the other hand, in parallel with the printing of the image data by the image drawing unit 341, the paper pattern detection unit 342 controls the paper pattern detector of the multifunction machine 30 to detect the paper pattern of the printing paper on which the image data is printed ( S155). The paper pattern detection unit 342 transmits the detected paper pattern to the job control unit 31 as a response to the paper pattern detection instruction in the process of S152 (S156).

  Note that the image drawing unit 341 may print the image data on the printing paper, and the paper pattern detection unit 342 may detect the paper pattern from the printing paper and the order thereof, either first or simultaneously. Note that it is preferable to detect the paper pattern from the printing paper before printing the image data because it is not affected by the change of the paper pattern due to the adhesion of toner.

  In accordance with the operation information collection instruction, the job control unit 31 notifies the operation information collection unit 32 of the processing contents, the image ID of the image data printed on the printing paper, and the paper pattern detected from the printing paper (S157). ). The content of the process represents printing during the copy operation. The operation information collection unit 32 collects the date and time when the operation was performed, the user ID of the user who issued the operation instruction, the device ID of the multifunction machine 30, the job ID, and the like (S158).

  The operation information collection unit 32 collects information such as the date and time when the operation was performed, the user ID of the user who issued the operation instruction, the device ID and job ID of the multifunction device 30, and the job control unit 31 collected by the processing of S158. The notified processing contents, the image ID of the image data read from the printing paper, and information such as the paper pattern detected from the printing paper are combined and transmitted as operation information to the tracking log creating unit 35 (S159). Note that the processing after S160 is the same as the processing of S112 to S116 in FIG.

  As a result of the processing in FIG. 4, a tracking log as shown in FIG. 6 is newly added to the tracking log storage unit 13 of the tracking log server 10. FIG. 6 is a configuration diagram illustrating an example of a tracking log related to the printing process. Items constituting the tracking log L2 of FIG. 6 are the same as those of the tracking log L1 of FIG. However, the paper pattern “2” is a paper pattern detected from the printing paper. The processing content “Print (copy)” indicates a printing process in the copy job. The image ID indicates the image ID of the image data printed on the printing paper.

  Note that the tracking log of the scanning process and the tracking log of the printing process are recorded separately for one copy job, for example, even when scanning has failed but printing has failed. This is so that the fact that a user tried to copy can be recorded.

  When separating the tracking log of the scanning process and the tracking log of the printing process for one copy job, it is necessary to devise so that the association between the two tracking logs is maintained. For example, the job ID of the same copy job may be added to both tracking logs. However, it is conceivable that the copy (copying) source paper document is composed of a plurality of manuscript sheets, or that a plurality of copies are instructed based on one paper document. In the tracking step to be described later, it is necessary to associate in units of paper. Therefore, it is desirable to record a tracking log so that the association between the copy source and the copy destination is performed in units of paper.

  In the present embodiment, in consideration of the above points, the image ID is used as information for associating the tracking log of the scanning process with the tracking log of the printing process. In this embodiment, when the copy source paper document is composed of a plurality of original sheets, or when a plurality of copies are designated for the same original, for example, each original sheet is scanned. In addition, a tracking log may be generated and recorded each time it is printed on each printing paper. In this case, each tracking log can be associated on a paper basis by the image ID of the scanned image data or the image ID of the printed image data recorded in each tracking log. In addition, a paper pattern may be used instead of the image ID as information for associating the tracking log of the scanning process with the tracking log of the printing process. In other words, the same effect can be obtained by recording a paper pattern of the copy source original paper in each tracking log instead of the copy source image ID.

  With respect to a copy job, the tracking log may be configured in units of a combination of a copy source document sheet and a copy destination print sheet without separating the scan processing tracking log and the printing processing tracking log. In this case, since the association between the copy source and the copy destination is included in the same tracking log, the association by the image ID becomes unnecessary.

  3 and 4, the case where a copy job is instructed has been described. However, when a simple scan (that is, a process of saving a paper document as electronic data) is instructed, FIG. When the simple print (that is, the process of printing electronic data) is instructed, the process of FIG. 4 may be performed.

<Tracking step>
Next, the tracking step will be described. The tracking step is a step of grasping a distribution route for a certain paper document. In the tracking step, as shown in FIG. 1, in addition to the tracking server 10, an output device that outputs a paper pattern detector and an analysis result of a paper document distribution path (information distribution path using paper as a medium); A device such as a client PC 20 or a multi-function device 30 provided with the above is required.

  FIG. 7 is a block diagram of an example of an information tracking system that implements the tracking step. In the information tracking system 2 of FIG. 7, the same parts as those of the tracking log recording system 1 of FIG.

  The information tracking system 2 in FIG. 7 is configured to include a tracking server 10 and a multifunction device 30 that are connected to each other via a network such as the Internet or a LAN.

  7 is configured to include a scanning unit 33, a communication unit 36, a user interface (I / F) unit (display) 37, and a tracking processing unit 38.

  7 includes a scanning unit 33, a communication unit 36, a user interface (I / F) unit (display) 37, a tracking processing unit 38, and the like. It functions by being processed by 30 CPUs. The program may be downloaded via a network, or may be installed by a recording medium 520 such as a CD-ROM or an SD memory card.

  The scanning unit 33 includes a paper identifier detection unit 332 and the like. The paper identifier detection unit 332 controls the paper pattern detector of the multi-function device 30 and controls the paper pattern, background pattern, and the like (paper identifier for uniquely identifying the paper, hereinafter “paper” "Identifier").

  The communication unit 36 controls communication with the tracking server 10. The user I / F unit 37 performs control related to input / output of information via the operation panel of the multifunction machine 30.

  The tracking processing unit 38 creates a message (analysis request) for requesting analysis of the distribution route to the tracking server 10 and performs processing for displaying an analysis result returned from the tracking server 10 in response to the analysis request.

  On the other hand, the tracking server 10 is configured to include a communication unit 11, a tracking log management unit 12, a tracking log storage unit 13, and a history storage unit 14. The history storage unit 14 stores family information including history information indicating the result of the distribution route of the paper document that has already been analyzed by the tracking log management unit 12 by recording the family information in a storage device or the like of the tracking server 10 in a predetermined format. . Family information will be described later.

  When the tracking log management unit 12 analyzes the distribution route of the paper document, first, whether the family information corresponding to the paper identifier of the paper of the paper document to be analyzed exists in the family information stored in the history storage unit 14. Search for no.

  When the family information corresponding to the paper identifier does not exist, the tracking log management unit 12 searches the tracking log related to the paper identifier based on the tracking log stored by the tracking log storage unit 13, and stores the paper document. Generate analysis results of distribution channels. Further, the tracking log management unit 12 creates family information based on the search result, and stores the created family information in the history storage unit 14.

  When there is family information corresponding to the paper identifier of the paper document to be analyzed, the tracking log management unit 12 checks whether there is a change in the family information. The tracking log management unit 12 searches for all paper identifiers constituting the family based on the tracking log stored in the tracking log storage unit 13, and after the family information creation date and time, image processing is performed and a new log is added. Check if there has been any change.

  The tracking log management unit 12 is configured so that only the paper identifiers that have changed among the paper identifiers that make up the family are related to the tracking log based on the tracking log of the tracking log storage unit 13 recorded after the family information creation date and time. Search for. The tracking log management unit 12 generates an analysis result for the distribution route of the paper document based on the search result for the changed paper identifier and the searched family information. Further, the tracking log management unit 12 updates the family information based on the search result and stores it in the history storage unit 14.

  When the family information corresponding to the paper identifier of the paper document to be analyzed exists and the family information is not changed, the tracking log management unit 12 distributes the paper document from the family information stored in the history storage unit 14. Generate route analysis results.

  In addition, even when the family information corresponding to the paper identifier of the paper document to be analyzed does not exist, the tracking log management unit 12 has the family information corresponding to the parent identifier of the paper identifier, for example, The distribution route is analyzed by using the family information corresponding to the parent paper identifier.

  Specifically, the tracking log management unit 12 searches the tracking identifier related to the paper identifier for the paper identifier to be analyzed based on the tracking log stored in the tracking log storage unit 13, and sets the parent identifier of the paper identifier. Search for a paper identifier. The tracking log management unit 12 searches whether there is family information corresponding to the retrieved parent paper identifier, and if there is family information, confirms the change of the family information as described above, and In some cases, the tracking log is further searched for the changed paper identifier. The tracking log management unit 12 can generate a distribution route analysis result by combining the search result for the paper identifier and the search result for the family information of the parent identifier of the paper identifier.

  As described above, history information indicating the distribution route result of the analyzed paper document is stored as family information, and by using the stored family information, only newly added logs after analyzing the distribution route are searched. It is possible to analyze the distribution route of paper documents at high speed.

  FIG. 8 is a diagram illustrating an example of family information. The family information is created based on the history information indicating the result of searching the tracking log corresponding to the paper identifier based on the paper identifier of the paper of the paper document and analyzing the distribution route. The family information is a group of papers derived from a certain paper document by image processing, and shows the distribution route of information distributed from the certain paper document as a family tree. As shown in FIG. 8, the family information can indicate the distribution route of the paper document by using a paper identifier that specifies the paper of the paper document.

  In the family information shown in FIG. 8, the paper identifier “I” of a certain paper document is derived from the paper identifier “B” by image processing such as printing, and the paper identifier “B” is printed, etc. Is derived. Further, the paper identifier “C” is derived from the paper identifier “I” by printing or the like, and the paper identifier “E” is derived from the paper identifier “C”.

  Thus, by showing the family information as a family tree, it is possible to show the distribution route of paper documents derived from image processing using paper as a medium. Here, for example, the paper identifier “b” is derived by printing the paper identifier “b”, so the paper identifier “b” corresponds to the parent paper identifier with respect to the paper identifier “b”. . Similarly, the paper identifier “B” corresponds to the parent paper identifier of the paper identifier “II”.

  In the family information shown in FIG. 8, the family identifier for identifying the family is “I”, and the family “I” is represented by the families “I”, “B”, “C”, “N”, and “H”. It is configured. The date and time “September 28, 2007, 15:16:20” when the family information was created is described in the family information. Note that the date and time when the family information was created is the date and time when the tracking log search unit 12 performed the tracking log search (analysis) for the paper identifiers that make up the family.

  FIG. 9 is a diagram illustrating an example of changed family information. Compared with the family information shown in FIG. 8, the family information shown in FIG. 9 has a paper identifier “G” newly derived from the paper identifier “e” and a paper identifier “b” derived from the paper identifier “i”. . Since family information shows the distribution route analyzed for the paper identifiers that make up the family, only the paper identifiers that have changed after the family information creation date and time are searched for log information. It is possible to analyze the route at high speed.

  An example of analyzing a distribution route using the family information shown in FIGS. 8 and 9 will be described. When analyzing the distribution route for the paper identifiers constituting the family shown in FIG. 8, the tracking log management unit 12 changes the paper identifier (for example, “I”) after the family information creation date in FIG. Only in “e”), the tracking log storage unit 13 searches the related tracking log. As a result of the search, after the family information in FIG. 8 is created, “to” is derived from the paper identifier “I”, and “to” is derived from the paper identifier “e”. By adding and updating the family information, the distribution route shown in FIG. 9 can be generated as an analysis result.

  Further, when there is no change in the family identifier shown in FIG. 8 after the family information creation date, the distribution route shown in FIG. 8 can be used as an analysis result as it is.

  In FIG. 8, when a new distribution route is analyzed for a paper identifier that does not constitute a family (for example, the paper identifier “G” shown in FIG. 9), the parent paper identifier “E” of the paper identifier “G” is traced. Search is made from the log storage unit 13, and family information corresponding to “e” is searched from the tracking log history unit 14. In this way, even when there is no family information corresponding to the paper identifier, the distribution information indicating the history of the paper identifier “G” can be analyzed at high speed by using the family information corresponding to the parent identifier of the paper identifier. Is possible.

  As described above, by using history information indicating the distribution path results that have already been analyzed as family information, it is not necessary to analyze all of the distribution paths of a paper document, so it is possible to analyze distribution paths at high speed. And

  FIG. 10 is a sequence diagram for explaining the new family information creation process in the distribution route analysis process. When the user sets the analysis contents of the distribution route via the operation panel of the multifunction machine 30, the user I / F unit 37 holds the set contents (S201). Here, the contents of the analysis of the distribution route include the range of the route to be analyzed, such as whether to analyze the history of the paper document that is the analysis target, whether to analyze the distribution destination, or both Is included.

  Next, when the user sets a paper document on the ADF or the contact glass of the multifunction machine 30 and issues a tracking scan execution instruction for analyzing the distribution route via the operation panel (S202), the user I / F unit 37 The paper identifier detection unit 332 is instructed to detect a paper identifier such as a paper pattern of the paper document (S203). Further, the user I / F unit 37 notifies the analysis processing set by the user to the tracking processing unit 38 (S204). In accordance with an instruction from the user I / F unit 37, the paper identifier detection unit 332 controls the scanning unit 33 of the multifunction machine 30 to detect the paper identifier of the paper of the paper document (S205). The paper identifier detection unit 332 transmits the detected paper identifier to the tracking processing unit 38 (S206).

  Next, the tracking processing unit 38 creates an analysis request including the analysis content output from the user I / F unit 37 and the paper identifier detected by the paper identifier detection unit 332 (S207). To the tracking server 10 (S208). When receiving the analysis request, the communication unit 11 of the tracking server 10 transmits the analysis request to the tracking log management unit 12.

  In accordance with the received analysis request, the tracking log management unit 12 searches for the family information accumulated by the history storage unit 14 based on the paper identifier included in the analysis request (S209).

  When the family information corresponding to the paper identifier included in the analysis request does not exist as a result of the search, the tracking log management unit 12 performs the tracking log storage unit 13 based on the identifier included in the analysis request according to the analysis request. The stored tracking log is searched, and the tracking log related to the paper identifier is analyzed (S210). Details of the analysis process will be described later.

  The tracking log management unit 12 generates an analysis result based on the search result in the process of S210 (S211). Further, based on the result of the search in S210, family information is generated (S212), and the generated family information is transmitted to the history storage unit 14 (S213). The history storage unit 14 stores the transmitted family information.

  Further, the tracking log management unit 12 transmits the analysis result generated in the process of S211 to the multi function device 30 via the communication unit 11 (S214). The multi-function device 30 transmits the analysis result received via the communication unit 36 to the tracking processing unit 38.

  The tracking processing unit 38 visualizes the received analysis result in a form that is easy for the user to see (S215). Next, the tracking processing unit 38 displays the visualized analysis result on the user I / F unit 37 (S216). The user confirms the analysis result displayed on the user I / F unit 37 (S217).

  FIG. 11 is a sequence diagram showing an embodiment when the family information update process in the information tracking process is used. FIG. 11 shows an example in which family information exists when the tracking log management unit 12 searches for family information in the history storage unit 14 as compared with the above-described embodiment of FIG.

  Therefore, the processing from S251 to S259 and the processing from S263 to S266 shown in FIG. 11 are the same as the processing from S201 to S209 and the processing from S214 to S217 in the embodiment shown in FIG. The specific description in is omitted.

  In the example shown in FIG. 11, when family information exists in the process of S259, it is confirmed whether there is any change in the family information. If there is a change in the family information, the tracking log storage unit 13 searches the newly recorded tracking log and analyzes the distribution route after the family information creation date and time (S260).

  The tracking log management unit 12 generates an analysis result based on the family information obtained by searching in the process of S259 and the newly analyzed result in the process of S260 (S261). Further, the history storage unit 14 updates the family information based on the search result obtained in the process of S260 (S262). In updating the family information, the tracking date and time are updated, the paper identifier of the added tracking log is added, and the paper identifier is deleted from the changed portion. The tracking log management unit 12 transmits the analysis result generated in the process of S261 to the multi function device 30 via the communication unit 11 (S263).

  FIG. 12 is a sequence diagram for explaining the family information analysis process in the distribution route analysis process. Note that FIG. 12 is a case where the family information exists and the family information is not changed when the tracking log management unit 12 searches the family information in the history storage unit 14 in comparison with the above-described embodiment of FIG. It is an example.

  Accordingly, the processing from S301 to S309 and the processing from S311 to S314 shown in FIG. 12 are the same as the processing from S201 to S209 and the processing from S214 to S217 in the embodiment shown in FIG. The specific description in is omitted.

  In the embodiment of the information tracking process shown in FIG. 12, when the family information exists in the process of S309, it is confirmed whether or not there is a change in the family information. When there is no change in the family information, the tracking log management unit 12 generates an analysis result from the family information obtained by searching in the process of S309 (S310).

  Next, a distribution route analysis process performed by the tracking log management unit will be described. FIG. 13 is a flowchart illustrating an example of a distribution route analysis process performed by the tracking log management unit.

  As shown in FIG. 13, the tracking log management unit 12 of the tracking server 10 sets the paper identifier of the paper document to be analyzed as a search key (S351). Next, the family information of the search key is acquired from the history storage unit 14 (S352). The tracking log management unit 12 checks whether there is family information of the search key (S353). When there is no family information (NO in S353), the tracking log management unit 12 sets the paper identifier as a search key (S354), and searches the tracking log corresponding to the paper identifier from the tracking log storage unit 13 (S355). .

  The tracking log management unit 12 generates an analysis result from the search result obtained in the process of S355 (S356). Next, family information is generated from the search result (S357). Next, the tracking log management unit 12 stores the family information generated in the process of S357 in the history storage unit 14 (S358), and ends the process.

  If there is family information (YES in S353), the tracking log management unit 12 checks whether there is a change in the family information (S359). If there is a change in the family information (YES in S359), a paper identifier with a change in family information is set as a search key (S360), and it is confirmed whether there is a paper identifier with a change (S361).

  When there is a paper identifier with a change (YES in S361), the tracking log is searched for a paper identifier with a change (S362). The tracking log management unit 12 adds the tracking log search result obtained in the process of S362 to the tracking result (S363). The tracking log management unit 12 sets a paper identifier with the next change as a search key (S364).

  If there is no changed paper identifier (NO in S361), an analysis result is generated from the family information and the tracking log search result (S365). Next, the tracking log management unit 12 updates the family information from the search result (S366). Next, the tracking log management unit 12 stores the updated family information in the history storage unit 14 (S367).

  When there is no change in the family information (NO in S359), the tracking log management unit 12 generates an analysis result from the family information (S368).

  Next, the tracking log search process performed by the tracking log management unit will be described. FIG. 14 is a flowchart illustrating an example of a tracking log search process performed by the tracking log management unit.

  The tracking log management unit 12 sets the paper identifier of the paper to be analyzed as a search key (S402). The tracking log management unit 12 checks whether or not a search date is specified (S403). When the search date is not specified (NO in S403), the log whose search key is the parent paper identifier is acquired from the tracking log storage unit 13 (S404). If the search date / time is specified (YES in S403), a log recorded after the search date / time and having the search key as the parent paper identifier is acquired from the tracking log storage unit 13 (S405).

  Here, the search date indicates family information creation date described in the family information. Therefore, if there is family information in the process of S353 in FIG. 13, the search date and time is designated in S403.

  Next, the tracking log management unit 12 confirms whether there is a log whose parent key identifier is a search key (S406). If there is a log (YES in S406), the acquired log is added to the search result (S407). Next, the acquired log is searched until the tracking log search is completed (S408). Next, the paper identifier of the acquired log is set as a search key (S409), and the tracking log is searched (S410). The tracking log management unit 12 adds the acquired log to the search result (S411). If there is no log of the parent paper identifier as the search key (NO in S406), the process is terminated.

  By the way, the tracking server 10 of the information tracking system 2 of FIG. 7 described above can be configured using an information processing apparatus as shown in FIG. 15, for example. FIG. 15 is a diagram illustrating an example of a hardware configuration of the tracking server 10.

  In FIG. 15, the tracking server 10 is a computer device, which is an input device 61, an output device 62, a drive device 63, an auxiliary storage device 64, and a memory device 65, which are mutually connected via a system bus. And an arithmetic processing unit 66 and an interface device 67.

  The input device 61 includes a keyboard, a mouse, and the like, and is used to input various signals. The output device 62 is composed of a display device or the like, and is used for displaying various windows and data. The interface device 67 includes a modem, a LAN card, and the like, and is used for connecting to a network.

  The tracking server 10 communicates with a plurality of multifunction devices 30, scanners, printers, client PCs, and the like provided outside via the network by the interface device 67, receives various requests and various information, and the tracking server 10 Output various generated information.

  The information distribution grasping program according to the present embodiment is at least a part of various programs that control the tracking server 10. The information distribution grasp program is provided by, for example, distribution of the storage medium 68 or downloading from a network. The storage medium 68 storing the information distribution grasping program is a storage medium that stores information optically, electrically, or magnetically, such as a CD-ROM, flexible disk, magneto-optical disk, etc., and ROM (Read Only Memory). It can be provided using various types of storage media such as a semiconductor memory that electrically stores information such as a flash memory.

  When the storage medium 68 storing the information distribution grasp program is set in the drive device 63, the information distribution grasp program is installed from the storage medium 68 to the auxiliary storage device 64 via the drive device 63.

  Further, the information distribution grasping program may be downloaded from the network and installed in the auxiliary storage device 64 via the interface device 67.

  The tracking server 10 stores the installed information distribution grasp program and stores necessary files, data, and the like. The memory device 65 reads and stores the information distribution grasp program from the auxiliary storage device 64 at the time of activation. The arithmetic processing unit 66 implements the various processes described above according to the information distribution grasping program stored in the memory device 65.

  As described above, according to the present invention, the distribution route analyzed based on the paper identifier of the analysis target paper is stored as a history, and only the newly recorded log is searched using this history information. This makes it possible to speed up the distribution route analysis of paper documents.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Can be changed.

It is a block diagram of one Example of a document distribution grasp system. It is a block diagram of an example of the tracking log recording system which implement | achieves a recording step. It is a sequence diagram of an example explaining the tracking log recording process (scan process) by the tracking log recording system. It is a sequence diagram of an example explaining a tracking log recording process (printing process) by the tracking log recording system. It is a block diagram which shows an example of the tracking log which concerns on a scanning process. It is a block diagram which shows an example of the tracking log concerning a printing process. It is a block diagram of an example of the information tracking system which implement | achieves a tracking step. It is a figure which shows an example of family information. It is a figure which shows an example of the changed family information. It is a sequence diagram for demonstrating the family information new creation process in a distribution route analysis process. It is a sequence diagram for demonstrating the family information update process in a distribution route analysis process. It is a sequence diagram for demonstrating the family information analysis process in a distribution route analysis process. It is a flowchart which shows an example of the distribution route analysis process which a tracking log management part performs. It is a flowchart which shows an example of the tracking log search process which a tracking log management part performs. It is a figure which shows an example of the hardware constitutions of a tracking server.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tracking log recording system 2 Information tracking system 10 Tracking server 11, 24, 36 Communication part 12 Tracking log management part 13 Tracking log storage part 14 History storage part 30, 30b-30e, 50 Multifunction machine 30a Printer 31 Job control part 32 Operation Information collection unit 33, 33a, 33b Scan unit 34 Printing unit 35 Tracking log creation unit 40a to 40e Paper document 51 User I / F unit (display)
52 Scanning Unit 53 Tracking Processing Unit 54 Communication Unit 61 Input Device 62 Output Device 63 Drive Device 64 Auxiliary Storage Device 65 Memory Device 66 Arithmetic Processing Device 67 Interface Device 68 Storage Devices 331, 331a, 331b Image Reading Units 332, 332a, 332b Paper Crest (paper identifier) detection unit 341 Image drawing unit 342 Paper crest detection unit

Claims (20)

An information distribution grasping system for grasping the distribution route of information using paper as a medium,
Search means for retrieving a newly derived distribution route from history information indicating the result of the distribution route of the information previously analyzed based on the paper identification information uniquely identifying the paper detected from the paper;
On the basis of the search result obtained by the search means and to said history information, have a analyzing means for analyzing the distribution channel of the information of the paper to be analyzed,
The search means includes
Information recorded after the search date and time indicated in the history information corresponding to the paper identification information of the paper to be analyzed and indicating that image processing has been performed using paper as a medium; paper identification information detected from the paper; The paper identification information indicating the distribution route of the history information is searched from log information accumulated in advance associated with the paper identification information of the paper derived from the image processing,
The analysis means includes
When paper identification information indicating a distribution route of the history information is searched from the accumulated log information by the search means, the paper sheet derived from the searched paper identification information of the history information. An information distribution grasping system characterized by adding identification information . The search means includes
The recorded after the search date and time indicated in the history information from the previous SL accumulated log information, the paper identification information parent paper identification information indicating the distribution channel of the history information corresponding to the paper identification information of the analysis target of the paper The information distribution grasping system according to claim 1, wherein log information is acquired. The search means includes
The history information corresponding to the parent paper identification information of the paper identification information of the analysis target paper is searched when the history information corresponding to the paper identification information of the analysis target paper does not exist. Item 3. The information distribution grasping system according to item 1 or 2. The distribution channel is
The paper identification information for uniquely identifying the paper, processing information representing input or output of information performed by performing image processing using the paper as a medium, and other paper identification information are shown. The information distribution grasping system according to any one of claims 1 to 3. 5. The display generation unit according to claim 1, further comprising a display generation unit configured to display a screen in which a distribution route of the information derived by performing one or more image processes is a family tree. 6. Information distribution grasp system. An information distribution grasp server that grasps the distribution route of information using paper as a medium,
Based on the request from the client, on the basis of uniquely identifying paper identification information the paper to be detected from the paper, a further newly derived distribution channel from the history information indicating the result of the flow path of the information analyzed previously A search means for searching;
Analysis means for on the basis of the search result obtained by the search means and to said history information, to analyze the distribution route of the information of the paper to be analyzed,
Client communication means for communicating with the client ;
The search means includes
Information recorded after the search date and time indicated in the history information corresponding to the paper identification information of the paper to be analyzed and indicating that image processing has been performed using paper as a medium; paper identification information detected from the paper; The paper identification information indicating the distribution route of the history information is searched from log information accumulated in advance associated with the paper identification information of the paper derived from the image processing,
The analysis means includes
When the retrieval means retrieves paper identification information indicating a distribution route of the history information from the accumulated log information, the paper identification derived from the retrieved paper identification information of the history information. Information distribution grasp server characterized by adding information . The search means includes
The recorded after the search date and time indicated in the history information from the previous SL accumulated log information, the paper identification information parent paper identification information indicating the distribution channel of the history information corresponding to the paper identification information of the analysis target of the paper The information distribution grasp server according to claim 6, wherein the log information is acquired. The search means includes
The history information corresponding to the parent paper identification information of the paper identification information of the analysis target paper is searched when the history information corresponding to the paper identification information of the analysis target paper does not exist. Item 6. The information distribution grasp server according to Item 6 or 7. The distribution channel is
The paper identification information for uniquely identifying the paper, processing information representing input or output of information performed by performing image processing using the paper as a medium, and other paper identification information are shown. The information distribution grasp server according to any one of claims 6 to 8. 10. The display generation unit according to claim 6, further comprising: a display generation unit configured to display a screen in which the distribution route of the information derived by performing one or more image processes is a family tree. Information distribution grasp server. An information distribution grasping method for grasping a distribution route of information using paper as a medium executed by a computer ,
By the computer, on the basis of uniquely identifying paper identification information the paper to be detected from the paper, to search for further new derived distribution channel from the history information indicating the result of the flow path of the information analyzed previously search Procedure and
By the computer, on the basis of search search results obtained by the procedure in said history information, possess the analyzing procedure for analyzing the distribution channel of the information of the paper to be analyzed,
The search procedure is as follows:
Information recorded after the search date and time indicated in the history information corresponding to the paper identification information of the paper to be analyzed and indicating that image processing has been performed using paper as a medium; paper identification information detected from the paper; The paper identification information indicating the distribution route of the history information is searched from log information accumulated in advance associated with the paper identification information of the paper derived from the image processing,
The analysis procedure is:
When paper identification information indicating a distribution route of the history information is retrieved from the accumulated log information by the retrieval procedure, the paper sheet derived from the retrieved paper identification information of the history information. An information distribution grasping method characterized by adding identification information . The search procedure is as follows:
The recorded after the search date and time indicated in the history information from the previous SL accumulated log information, the paper identification information parent paper identification information indicating the distribution channel of the history information corresponding to the paper identification information of the analysis target of the paper The information distribution grasping method according to claim 11, wherein log information is acquired. The search procedure is as follows:
The history information corresponding to the parent paper identification information of the paper identification information of the analysis target paper is searched when the history information corresponding to the paper identification information of the analysis target paper does not exist. Item 13. The information distribution grasping method according to Item 11 or 12. The distribution channel is
The paper identification information for uniquely identifying the paper, processing information representing input or output of information performed by performing image processing using the paper as a medium, and other paper identification information are shown. The information distribution grasping method according to any one of claims 11 to 13. 15. The display generation unit according to claim 11, further comprising a display generation unit configured to display a screen in which the distribution route of the information derived by performing one or more image processes is a family tree. Information distribution grasp method. An information distribution grasping program for grasping the distribution route of information using paper as a medium,
Computer
Search means for retrieving a newly derived distribution route from history information indicating a result of the distribution route of the information analyzed previously, based on paper identification information uniquely identifying the paper detected from the paper; and Based on the search result obtained by the search means and the history information , function as an analysis means for analyzing the distribution route of the information of the paper to be analyzed ,
The search means includes
Information recorded after the search date and time indicated in the history information corresponding to the paper identification information of the paper to be analyzed and indicating that image processing has been performed using paper as a medium; paper identification information detected from the paper; The paper identification information indicating the distribution route of the history information is searched from log information accumulated in advance associated with the paper identification information of the paper derived from the image processing,
The analysis means includes
When the retrieval means retrieves paper identification information indicating a distribution route of the history information from the accumulated log information, the paper identification derived from the retrieved paper identification information of the history information. An information distribution grasping program characterized by adding information . The search means includes
The recorded after the search date and time indicated in the history information from the previous SL accumulated log information, the paper identification information parent paper identification information indicating the distribution channel of the history information corresponding to the paper identification information of the analysis target of the paper The information distribution grasping program according to claim 16, wherein log information is acquired. The search means includes
The history information corresponding to the parent paper identification information of the paper identification information of the analysis target paper is searched when the history information corresponding to the paper identification information of the analysis target paper does not exist. Item 16. The information distribution grasp program according to Item 16 or 17. The distribution channel is
The paper identification information for uniquely identifying the paper, processing information representing input or output of information performed by performing image processing using the paper as a medium, and other paper identification information are shown. The information distribution grasping program according to any one of claims 16 to 18. 20. The display generating unit according to claim 16, further comprising a display generation unit configured to display a screen in which the distribution route of the information derived by performing one or more image processes is a family tree. Information distribution grasp program.

Images