JP2006163904A - Network document management system, its control method, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To flexibly respond to log information different in data structures. <P>SOLUTION: A digital complex machine generates to transmit image log information in an XML format composed of image data and log information, and a document management server stores to retrieve the image log information as it is in the XML format. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a digital multi-function peripheral that generates and transmits job image data and log information, a document management server that receives and stores image data and log information from the digital multi-function peripheral, and is stored in the document management server. The present invention relates to a network document management system including a document management client that searches and browses image data and log information, a control method thereof, and a storage medium.

  Conventionally, document additional information such as keywords is associated with document information such as image data of a document created by reading printed characters, figures, images, etc. with a scanner device or the like, or document data created with a word processor or the like. There has been proposed a network document management system in which a document management server to be stored and a document management client that searches, displays, prints, etc. for these pieces of information are connected via a network (for example, Patent Document 1).

  In addition, in such a network document management system, a digital composite that can generate and transmit image data and log information of various jobs such as copy jobs, print jobs, etc., for the purpose of suppressing information leakage. It has also been proposed that the image data and log information of a job transmitted from a digital multi-function peripheral can be registered as a document in a document management server as a document and later searched and viewed from a document management client. .

Such a network document management system includes a document management client 1200, a document management server 1201, an image transfer device 1206, and a digital multifunction peripheral 1207 as shown in FIG. 12, for example, and these are connected via a network 1208. ing. The document management server 1201 includes an attribute management server unit 1202, an attribute database file 1203, a volume server unit 1204, and a volume file 1205. The attribute management server unit 1202 manages the inclusion relations of folders, documents, and pages and their attributes so that image data and document data can be managed as documents stored in a hierarchical folder. Database Management System) stores folder attributes, document attributes, page attributes, and the like in the attribute database file 1203. The volume server unit 1204 is a server for managing actual data associated with pages by the attribute management server unit 1201, and stores image data, document data, and the like in the volume file 1205. A document management client 1200 is a client of a network document management system, and can search and browse documents managed by the document management server 1201. In this case, the document management client 1200 transmits various requests to the attribute management server unit 1202 by the SQL (Structured Query Language) protocol defined on the TCP / IP protocol, and the processing result is sent from the attribute management server unit 1202. At the same time, when processing for image data and document data further occurs, various requests are transmitted to the volume server unit 1204 by RPC (Remote Procedure Call), and the processing results are received from the volume server unit 1204. The digital multifunction peripheral 1207 is an image forming apparatus having multifunction functions such as a copy, scanner, printer, and fax. When various jobs such as a copy job, print job, and the like are executed, the job is read from the scanner together with log information of the job. The image data or the image data printed by the printer is transmitted to the image transfer apparatus 1206 using a network protocol such as FTP. Log information consists of device information such as device name and IP address, user information such as user name and department ID, and job information such as job name, start / end date and time, number of pages, number of copies, and job results. The The image transfer apparatus 1206 registers the log information and the image data received from the digital multifunction peripheral 1207 by a network protocol such as FTP as a document in the document management server 1201 based on a registration setting such as a preset storage destination folder. Therefore, the information transfer control with the document management server 1201 is performed in the same manner as the document management client 1200, the log information is stored in the attribute management server unit 1202 as document attributes, and the image data is stored in the volume server unit 1204. .
JP 2002-189687 A

However, in the above-described network document management system of the prior art, job log information generated by the digital multifunction peripheral 1207 is stored in the attribute management server unit 1202 which is an RDBMS. Therefore, it is necessary to design / define the table of the attribute management server unit 1202 in advance according to the data structure of the log information. In addition, when log information job types with different data structures are added, or when digital multifunction peripherals with log information with different data structures are added, it is necessary to newly cope with log information with different data structures. In such a case, it is necessary to design / change the table of the attribute management server unit 1202 and to convert the attribute database file 1203, which causes a problem that it takes time to develop and operate / maintain the system.
In addition to preventing information leakage, this system is designed to enable tracking by searching log information and image data even if information is leaked. However, in the above-described conventional network document management system, log information is stored in the attribute management server unit 1202, which is an RDBMS, and image data is stored as log information. In addition, since it is stored in the volume server unit 1204, there is a problem that it is difficult to detect falsification of log information and image data in units of jobs.

  The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a network document management system capable of flexibly dealing with log information having different data structures, a control method therefor, and a storage medium. There is. Another object of the present invention is to provide a network document management system capable of detecting falsification of log information and image data in units of jobs, a control method therefor, and a storage medium.

In order to achieve the above object, a control method for a network document management system according to a first aspect of the present invention includes a digital multifunction peripheral that generates and transmits image data and log information of a job, and image data and logs from the digital multifunction peripheral. In a control method of a network document management system comprising a document management server that receives and stores information, and a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
An image log information generation step for generating image log information in XML format composed of job image data and log information;
An image log information transmission step of transmitting the image log information generated by the image log information generation step to the document management server;
The document management server
An image log information receiving step for receiving image log information from the digital multifunction peripheral;
Image log information storage step for storing the image log information received in the image log information reception step as it is in XML format;
An image log information search step for searching the image log information in the XML format stored in the image log information storage step is executed based on a search request received from the document management client. .

According to a second aspect of the present invention, there is provided a network document management system control method that generates and transmits job image data and log information, and a document that receives and stores image data and log information from the digital multifunction peripheral. In a control method of a network document management system comprising a management server and a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
An image log information generation step for generating image log information in XML format composed of job image data and log information, and generating a hash value of the image log information;
An image log information transmission step of transmitting the image log information and the hash value generated by the image log information generation step to the document management server;
The document management server
An image log information receiving step for receiving image log information and a hash value from the digital multifunction peripheral;
The image log information storage step of storing the image log information received by the image log information reception step in association with the hash value received by the image log information reception step in the XML format,
Based on a search request received from the document management client, an image log information search step of searching for image log information in XML format stored by the image log information storage step;
A falsification detection request receiving step for receiving a falsification detection request from the document management client;
Based on the falsification detection request received in the falsification detection request receiving step, the hash value generated from the designated image log information is compared with the hash value stored in association with the image log information, and the image Determining whether log information has been falsified, and executing a falsification detection response step of transmitting the determination result to the document management client;
The document management client
A falsification detection request transmission step for transmitting a falsification detection request for designated image log information to the document management server;
A falsification detection result display step of receiving and displaying the determination result is executed for the falsification detection request transmitted in the falsification detection request transmission step.

A network document management system according to a third aspect of the present invention is a digital multifunction peripheral that generates and transmits job image data and log information, a document management server that receives and stores image data and log information from the digital multifunction peripheral, and In a network document management system comprising a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
Image log information generating means for generating image log information in XML format composed of job image data and log information;
Image log information transmitting means for transmitting the image log information generated by the image log information generating means to the document management server,
The document management server
Image log information receiving means for receiving image log information from the digital multifunction peripheral;
Image log information storing means for storing the image log information received by the image log information receiving means in an XML format;
And an image log information search unit that searches the image log information in the XML format stored by the image log information storage unit based on a search request received from the document management client. .

A network document management system according to a fourth aspect of the present invention is a digital multifunction peripheral that generates and transmits job image data and log information, a document management server that receives and stores image data and log information from the digital multifunction peripheral, and In a network document management system comprising a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
Image log information generating means for generating image log information in XML format composed of job image data and log information, and generating a hash value of the image log information;
Image log information transmission means for transmitting the image log information and the hash value generated by the image log information generation means to the document management server,
The document management server
Image log information receiving means for receiving image log information and a hash value from the digital multifunction peripheral;
Image log information storage means for storing the image log information received by the image log information reception means in an XML format in association with the hash value received by the image log information reception means;
Image log information search means for searching image log information in XML format stored by the image log information storage means based on a search request received from the document management client;
A falsification detection request receiving means for receiving a falsification detection request from the document management client;
Based on the alteration detection request received by the alteration detection request receiving means, the hash value generated from the designated image log information is compared with the hash value stored in association with the image log information, and the image Falsification detection response means for determining whether log information has been falsified and transmitting the determination result to the document management client;
The document management client
A falsification detection request transmitting means for transmitting a falsification detection request for designated image log information to the document management server;
A tampering detection result display unit that receives and displays the determination result in response to a tampering detection request transmitted by the tampering detection request transmission unit.

A storage medium according to a fifth aspect of the invention is a digital multifunction peripheral that generates and transmits job image data and log information, a document management server that receives and stores image data and log information from the digital multifunction peripheral, and A storage medium for storing a program for controlling a network document management system composed of a document management client that searches and browses image data and log information stored in a document management server,
An image log information generation module in an image log information generation step for generating image log information in XML format composed of job image data and log information, and generating a hash value of the image log information;
A program for controlling the digital multifunction peripheral having an image log information transmission module of an image log information transmission step for transmitting the image log information and the hash value generated by the image log information generation step to the document management server;
An image log information receiving module in an image log information receiving step for receiving image log information and a hash value from the digital multifunction peripheral;
The image log information storage module of the image log information storage step for storing the image log information received by the image log information reception step in association with the hash value received by the image log information reception step in the XML format,
An image log information search module in an image log information search step for searching image log information in XML format stored by the image log information storage step based on a search request received from the document management client;
A falsification detection request receiving module in a falsification detection request reception step for receiving a falsification detection request from the document management client;
Based on the falsification detection request received in the falsification detection request receiving step, the hash value generated from the designated image log information is compared with the hash value stored in association with the image log information, and the image A program for controlling the document management server having a falsification detection response module of a falsification detection response step for determining whether log information has been falsified and transmitting the determination result to the document management client;
A falsification detection request transmission module of a falsification detection request transmission step for transmitting a falsification detection request of designated image log information to the document management server;
A program for controlling the document management client having a falsification detection result display module of a falsification detection result display step for receiving and displaying the determination result in response to a falsification detection request transmitted in the falsification detection request transmission step; It is characterized by being stored.

  According to the network document management system, the control method thereof, and the storage medium of the present invention, the digital multifunction peripheral generates and transmits image log information in XML format composed of image data and log information, and a document management server Thus, since the image log information is stored and searched in the XML format, it is possible to flexibly deal with log information having different data structures. Also, in accordance with the request from the document management client, the document management server compares the hash value generated from the image log information with the hash value stored in association with the image log information, and whether the image log information has been altered. Therefore, it is possible to detect whether the log information and the image data are falsified on a job basis.

  FIG. 1 is a block diagram illustrating the overall configuration of a network document management system according to an embodiment of the present invention. This network document management system includes a document management client 100, a document management server 110, and a digital multifunction peripheral 130, which are connected via a network 140.

  The document management client 100 is a client of this network document management system that searches and displays image log information managed by the document management server 110, and includes a user interface (UI) unit 101, a client processing unit 102, and a network I. / F103. A user interface (UI) unit 101 receives instructions from an operator related to each function of the document management client 100 such as search and display of image log information, and provides various information such as processing results to the operator. It consists of a display device typified by a CRT, liquid crystal or the like, and an input device such as a keyboard or pointing device. The client processing unit 102 includes a CPU, a memory, and the like. The client processing unit 102 performs processing of each function of the document management client 100 such as search and display of image log information. When processing for the document management server 110 occurs, a network I Various request commands are transmitted to the document management server 110 via / F103, and responses are received.

  The document management server 110 is a server of the present network document management system for managing image log information stored from the digital multifunction peripheral 130. The document management server 110 includes a network I / F 111, a data management server unit 112, and a service server unit 115. Composed. The data management server unit 112 and the service server unit 115 may be configured by one personal computer as in this embodiment, or may be configured by separate personal computers connected by the network 140.

  A network I / F 111 is connected to the network 140 and performs processing of a network protocol such as TCP / IP.

  The data management server unit 112 is a server unit for managing image log information as a document, and includes a data management server processing unit 113 and a data storage unit 114. The data management server processing unit 113 includes a CPU, a memory, and the like, receives a request command from the client processing unit 102 or the service server unit 115 via the network I / F 111, and updates or searches the data storage unit 114. The processing result is transmitted to the client processing unit 102 or the service server unit 115. The data storage unit 114 stores image log information and the like, and is usually a hard disk or the like.

  The service server unit 115 includes a CPU, a memory, and the like, receives a request command from the digital multifunction peripheral 130 via the network I / F 111, performs each process requested from the digital multifunction peripheral 130, and registers image log information. When processing for the data management server unit 112 occurs, various request commands are transmitted to these via the network I / F 111, responses are received, and the processing results are transmitted to the digital multifunction peripheral 130.

  The digital multifunction peripheral 130 is an image forming apparatus having multifunction functions such as a copy, a scanner, a printer, and a FAX, and includes a scanner unit 131 that is an image input device, a printer unit 132 that is an image output device, a controller unit 133, and a user interface. A certain operation unit 134 is configured. The scanner unit 131, the printer unit 132, and the operation unit 134 are each connected to a controller unit 133, and the controller unit 133 is connected to a network (LAN) 140 and a public line (WAN) 150.

  The controller unit 133 performs processing such as a copy job, print job, and the like based on the input information from the operation unit 134, provides information such as the device status and job status to the operation unit 134, and generates the generated image. Store data and log information. When processing for the document management server 110 occurs, a request command is transmitted to the service server unit 115, a response is received, and information acquired from the document management server 110 is provided to the operation unit 134.

  FIG. 2 is a block diagram showing functional configurations of the document management client and the document management server shown in FIG. 1, and the same components as those in FIG. 1 are denoted by the same reference numerals.

  The client processing unit 102 of the document management client 100 includes a client application unit 200, an image processing unit 201, a document management unit 202, and a database communication unit 203. The client application unit 200 processes each function of the document management client 100 and controls the display screen of the user interface (UI) unit 101 in accordance with instructions from the user interface (UI) unit 101. When processing for the data management server unit 112 occurs, the request is supplied to the document management unit 202, and the processing result is received from the document management unit 202. The image processing unit 201 performs image processing such as image data decompression, compression, color space conversion, background removal, enlargement / reduction, and rotation in accordance with requests from the client application unit 200 and the document management unit 202. The document management unit 202 enables requests to the data management server unit 112 using an object model including folders, documents, and pages, and processing such as reference to and update of folder attributes, document attributes, and page attributes occurs. If so, the request is supplied to the database communication unit 203 and the processing result is received from the database communication unit 203. The database communication unit 203 transmits a request command for the data management server unit 112 to the database communication unit 204 via the network I / F 103 by a command on the HTTP protocol including a query such as XPath or XQuery, and the response command is sent to the database Received from the communication unit 204.

  Next, the data management server processing unit 113 of the document management server 110 includes a database communication unit 204 and a database processing unit 205. The database communication unit 204 receives a request command for the data management server unit 112 from the database communication unit 203 or the database communication unit 207 via the network I / F 111 by a command on the HTTP protocol including a query such as XPath or XQuery. In this case, the request is supplied to the database processing unit 205, and the processing result is transmitted as a response command to the database communication unit 203 or the database communication unit 207. A database processing unit 205 is an NXDB (Native XML Database) for managing image log information in XML format, hash values, indexes, and the like, and processes such as updating and searching for the data storage unit 114 that is a database file. I do. In the data storage unit 114, image log information is stored as one XML data for one job, and each image log information includes log information of the job and image data of each page. ing. The hash value of each image log information is stored in association with the image log information. An index for searching for image log information later is also stored.

  Next, the service server unit 115 of the document management server 110 includes a service communication unit 206, a database communication unit 207, a document management unit 208, an image processing unit 209, and a service provider unit 210. When the service communication unit 206 receives a request command for the document management server 110 from the digital multifunction peripheral 130 via the network I / F 111 using the SOAP protocol over the HTTP protocol, the service communication unit 206 supplies the request to the service provider unit 210, The processing result is transmitted to the digital multifunction peripheral 130 as a response command. The service provider unit 210 performs processing according to the request from the service communication unit 206 and returns the processing result. When processing for the data management server unit 112 such as registration and search of image log information occurs, the request is supplied to the document management unit 208 and the processing result is received from the document management unit 208. The functional components of the database communication unit 207, the document management unit 208, and the image processing unit 209 are the same as the functional components of the document management client described above, and thus description thereof is omitted.

  FIG. 3 is a block diagram showing the configuration of the digital multifunction peripheral shown in FIG. 1, and the same components as those in FIG. 1 are denoted by the same reference numerals. The controller unit 133 is connected to a scanner unit 131 that is an image input device and a printer unit 132 that is an image output device, and on the other hand, is connected to a network (LAN) 140 or a public line (WAN) 150, so that image information and devices are connected. It is a controller for inputting and outputting information.

  In the controller unit 133, reference numeral 300 denotes a CPU, which is a controller that controls the entire system. A RAM 301 is a system work memory for the CPU 300 to operate, and is also an image memory (buffer memory) for temporarily storing input image data. Reference numeral 302 denotes a ROM which is a boot ROM and stores a system boot program. A hard disk drive (HDD) 303 stores system software, image data, log information, and the like.

  An operation unit I / F 304 is an interface unit with the operation unit 134 and outputs image data to be displayed on the operation unit 134 to the operation unit 134. The operation unit I / F 304 serves to transmit information input by the operator from the operation unit 134 to the CPU 300.

  Reference numeral 305 denotes a network unit (Network) which is connected to the network (LAN) 140 and inputs / outputs information. A modem 306 is connected to the public line (WAN) 150 and inputs / outputs image information. The above devices are arranged on the system bus 307.

  Reference numeral 308 denotes an image bus I / F, which is a bus bridge that connects the system bus 307 and an image bus 309 that transfers image data at high speed, and converts the data structure. The image bus 309 is configured by a PCI bus or IEEE1394. The following devices are arranged on the image bus 309.

  A raster image processor (RIP) 310 expands the PDL code into a bitmap image. A device I / F unit 311 connects the scanner unit 131 and the printer unit 132, which are image input / output devices, and the controller 133 via the image input unit interface 312 and the printing unit interface 313, and is a synchronous / asynchronous system for image data. Perform the conversion. A scanner image processing unit 314 corrects, processes, and edits input image data. The scanner image processing unit 314 has a function of determining whether the input image data is a color document or a monochrome document from the saturation signal of the image data and holding the result. A printer image processing unit 315 corrects, processes, and edits output image data.

  Reference numeral 316 denotes an image rotation unit, which cooperates with the scanner image processing unit 314 to rotate the image data simultaneously with reading the image from the scanner unit 131 and store the image data in the memory, or rotate the image data on the memory to Or the image data stored in the memory can be printed out while rotating in cooperation with the printer image processing unit 315. Reference numeral 317 denotes an image compression unit, which performs JPEG for multivalued image data and JBIG, MMR, MR, and MH for binary image data. A resolution conversion unit 318 performs resolution conversion processing on the image data on the memory and stores it on the memory. Reference numeral 319 denotes a color space conversion unit that converts, for example, YUV image data on the memory into Lab image data by matrix calculation, and stores it on the memory. Reference numeral 320 denotes a gradation conversion unit, which converts, for example, 8-bit and 256-gradation image data on the memory into 1-bit and 2-gradation by a technique such as error diffusion processing, and stores it on the memory. The image rotation unit 316, the image compression unit 317, the resolution conversion unit 318, the color space conversion unit 319, and the gradation conversion unit 320 can be operated in conjunction with each other. In the case of conversion, both processes can be performed without going through a memory.

  FIG. 4 shows the configuration of the operation unit 134. The LCD display unit 400 has a touch panel sheet 401 affixed on the LCD and displays a system operation screen and soft keys. When the displayed keys are pressed, the position information is sent to the CPU 300 in the controller unit 133. Tell. A start key 402 is used when starting a document image reading operation. At the center of the start key 402, there is a green and red two-color LED 403, which indicates whether or not the start key 402 can be used. A stop key 404 functions to stop an operation in operation. The ID key 405 is used when inputting the user ID of the user. A reset key 406 is used to initialize settings from the operation unit.

  FIG. 5 is a block diagram showing a functional configuration of system software in the controller unit of the digital multi-function peripheral shown in FIG. A user interface (UI) unit 500 supplies input information from an operator to the application unit 501, receives a processing result from the application unit 501, and generates a screen to be displayed on the operation unit 134. The application unit 501 performs processing in accordance with a request from the user interface (UI) unit 500. For example, when a copy is requested, the application unit 501 submits a copy job together with copy settings specified in the job control domain unit 502, Information such as device status and job status is received from the job control domain unit 502. When transmitting image log information to the document management server 110, the log information and image data are received from the job control domain unit 502, and image log information in XML format and its hash value are generated. A request for transmitting the hash value is supplied to the service communication unit 503, and the processing result is received. The job control domain unit 502 manages a plurality of jobs such as a scan job, a copy job, a print job, and a FAX job. For example, when a copy job is input, the job control domain unit 502 is designated. Based on the copy settings, the scanner unit 131 and the printer unit 132 are operated to read a document, print the image data, log information of the job including device information, user information, job information, and the like, and the job Is associated with the image data and stored in the hard disk drive. Further, log information and image data stored in the hard disk drive are supplied to the application unit 501 in accordance with a request from the application unit 501. The service communication unit 503 transmits a request command for the document management server 110 to the service communication unit 206 in the document management server 110 via the network I / F 504 using the SOAP protocol over the HTTP protocol, and receives a response. A network I / F 504 is connected to the network 140 and performs processing of a network protocol such as TCP / IP.

  Next, the operation of image log information transmission processing in the digital multi-function peripheral will be described with reference to the flowchart of FIG.

  First, when the job processing ends or when the timer reaches a preset transmission time (step S600), the stored job log information is read (step S601), and the XML parser is read. Thus, it is written as log information of image log information defined by a predetermined XML schema (step S602). Next, one page of image data stored in association with the log information is read (step S603), encoded into text using Base64 or the like (step S604), and defined by a predetermined XML schema by an XML parser. Is written as image data of the image log information (step S605). Next, it is determined whether or not the page read in step S603 is the last page (step S606), and steps S603 to S606 are repeated until the last page is reached. Next, a hash value of the image log information is generated (step S607), the generated image log information and the hash value are transmitted to the document management server (step S608), and the registration processing in the document management server is normally performed by the response. It is determined whether or not the processing has been completed (step S609). If the processing has been completed normally, the stored log information and image data are deleted (step S610), and the processing is terminated (step S611). If the registration process in the document management server does not end normally in step S609, the process ends as it is (step S611).

  FIG. 7 is an example of an XML schema of image log information in such image log information transmission processing. In this example, the root imageLogInformation element representing image log information includes a logInformation element representing log information and a pageInformation element representing image data. The logInformation element indicates a deviceInformation element indicating device information such as a device name and an IP address, a userInformation element indicating user information such as a department ID and a user name, and job information such as a job type, a job name, and a start date and time. Contains jobInformation element.

  Next, the operation of the falsification detection process in the document management server will be described with reference to the flowchart of FIG.

  First, processing is started by receiving a falsification detection request from the document management client (step S800), the designated image log information is read (step S801), and the hash stored in association with the image log information is stored. A value is read (step S802). Next, a hash value is generated from the image log information read in step S801 (step S803), and it is determined whether the hash value is equal to the hash value read in step S802 (step S804). If the two hash values are equal, it is determined that the image log information has not been tampered with (step S805), and if the two hash values are different, it is determined that the image log information has been tampered with ( In step S806, the determination result is transmitted to the document management client as a response to the falsification detection request received (step S807), and the process ends (step S808).

  Next, the operation of the falsification detection result display process in the document management client will be described with reference to the flowchart of FIG.

  First, processing is started by an instruction from an operator (step S900), a request for falsification detection for the displayed image log information is transmitted to the document management server (step S901), and the falsification detection determination result is document management as a response. Receive from the server (step S902). Next, the determination result is displayed (step S903), and the process ends (step S904).

  FIG. 10 is an example of a display screen in such a falsification detection result display process. In the figure, image data 1001 of image log information is displayed on the image viewer 1000 of the document management client, and a button 1002 for instructing whether or not the image log information has been tampered with is pressed by the operator. As a result, a message box 1003 is displayed.

  In FIG. 11, the “image log information generation module” generates image log information in XML format composed of job image data and log information, and generates a hash value of the image log information. This is a program module of a digital multi-function peripheral. The “image log information transmission module” is a program module of the digital multi-function peripheral for transmitting the generated image log information and hash value to the document management server. The “image log information receiving module” is a program module of the document management server for receiving image log information and hash values from the digital multi-function peripheral. The “image log information storage module” is a program module of the document management server for storing the received image log information in the XML format in association with the received hash value. The “image log information retrieval module” is a program module of the document management server for retrieving image log information in XML format based on the received retrieval request. The “tamper detection request receiving module” is a program module of the document management server for receiving a falsification detection request from the document management client. The “tamper detection response module” compares the hash value generated from the designated image log information with the hash value stored in association with the image log information based on the received tamper detection request, A document management server program module for determining whether image log information has been tampered with and transmitting the determination result to a document management client. The “falsification detection request transmission module” is a program module of the document management client for transmitting a falsification detection request for designated image log information to the document management server. The “falsification detection result display module” is a program module of the document management client for receiving and displaying the determination result in response to the transmitted falsification detection request.

It is a block diagram which shows the whole structure of the network document management system in the Example of this invention. It is a block diagram which shows the function structure of the document management client and document management server of this system. It is a block diagram which shows the structure of the digital multifunctional device of this system. It is a figure which shows the structure of the operation part of a digital multifunctional device. FIG. 2 is a block diagram illustrating a functional configuration of system software of a digital multi-function peripheral. 6 is a flowchart for explaining image log information transmission processing in the digital multi-function peripheral of this system. It is an example of the XML schema of image log information in the transmission process of image log information. It is a flowchart explaining the process of a tampering detection in the document management server of this system. It is a flowchart explaining the display process of the alteration detection result in the document management client of this system. It is a figure which shows the example of a display screen in the alteration detection result display process. It is a figure which shows the structure of the storage medium which stored the control program for controlling the network document management system in the Example of this invention. It is a block diagram which shows the whole structure of the network document management system of a prior art.

Explanation of symbols

100 Document management client
101 User interface (UI) section
102 Client processing section
103 Network I / F
110 Document management server
111 Network I / F
112 Data management server part
113 Data management server processing section
114 Data storage
115 Service server
130 Digital MFP
131 Scanner section
132 Printer section
133 Controller unit
134 Control panel
140 network
150 Public line (WAN)

Claims (5)

A digital MFP that generates and sends job image data and log information;
A document management server that receives and stores image data and log information from the digital multifunction peripheral;
In a control method of a network document management system comprising a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
An image log information generation step for generating image log information in XML format composed of job image data and log information;
An image log information transmission step of transmitting the image log information generated by the image log information generation step to the document management server;
The document management server
An image log information receiving step for receiving image log information from the digital multifunction peripheral;
Image log information storage step for storing the image log information received in the image log information reception step as it is in XML format;
An image log information search step for searching the image log information in the XML format stored by the image log information storage step based on a search request received from the document management client; How to control the system. A digital MFP that generates and sends job image data and log information;
A document management server that receives and stores image data and log information from the digital multifunction peripheral;
In a control method of a network document management system comprising a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
An image log information generation step for generating image log information in XML format composed of job image data and log information, and generating a hash value of the image log information;
An image log information transmission step of transmitting the image log information and the hash value generated by the image log information generation step to the document management server;
The document management server
An image log information receiving step for receiving image log information and a hash value from the digital multifunction peripheral;
The image log information received by the image log information receiving step, the image log information storing step for storing the image log information in the XML format in association with the hash value received by the image log information receiving step;
Based on a search request received from the document management client, an image log information search step for searching image log information in XML format stored by the image log information storage step;
A falsification detection request receiving step for receiving a falsification detection request from the document management client;
Based on the falsification detection request received in the falsification detection request receiving step, the hash value generated from the designated image log information is compared with the hash value stored in association with the image log information, and the image Determining whether log information has been falsified, and executing a falsification detection response step of transmitting the determination result to the document management client;
The document management client
A falsification detection request transmission step for transmitting a falsification detection request for designated image log information to the document management server;
A control method for a network document management system, comprising: executing a falsification detection result display step of receiving and displaying the determination result in response to a falsification detection request transmitted in the falsification detection request transmission step. A digital MFP that generates and sends job image data and log information;
A document management server that receives and stores image data and log information from the digital multifunction peripheral;
In a network document management system composed of a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
Image log information generating means for generating image log information in XML format composed of job image data and log information;
Image log information transmitting means for transmitting the image log information generated by the image log information generating means to the document management server,
The document management server
Image log information receiving means for receiving image log information from the digital multifunction peripheral;
Image log information storing means for storing the image log information received by the image log information receiving means in an XML format;
Network document management, comprising: image log information search means for searching image log information in XML format stored by the image log information storage means based on a search request received from the document management client system. A digital MFP that generates and sends job image data and log information;
A document management server that receives and stores image data and log information from the digital multifunction peripheral;
In a network document management system composed of a document management client that searches and browses image data and log information stored in the document management server,
The digital multifunction peripheral is
Image log information generating means for generating image log information in XML format composed of job image data and log information, and generating a hash value of the image log information;
Image log information transmission means for transmitting the image log information and the hash value generated by the image log information generation means to the document management server,
The document management server
Image log information receiving means for receiving image log information and a hash value from the digital multifunction peripheral;
Image log information storage means for storing the image log information received by the image log information reception means in an XML format in association with the hash value received by the image log information reception means;
Image log information search means for searching image log information in XML format stored by the image log information storage means based on a search request received from the document management client;
A falsification detection request receiving means for receiving a falsification detection request from the document management client;
Based on the alteration detection request received by the alteration detection request receiving means, the hash value generated from the designated image log information is compared with the hash value stored in association with the image log information, and the image Falsification detection response means for determining whether log information has been falsified and transmitting the determination result to the document management client;
The document management client
A falsification detection request transmitting means for transmitting a falsification detection request for designated image log information to the document management server;
A network document management system comprising: a falsification detection result display means for receiving and displaying the determination result in response to a falsification detection request transmitted by the falsification detection request transmission means. A digital multifunction peripheral that generates and transmits image data and log information of a job; a document management server that receives and stores image data and log information from the digital multifunction peripheral; and image data stored in the document management server; A storage medium for storing a program for controlling a network document management system including a document management client for searching and browsing log information,
An image log information generation module in an image log information generation step for generating image log information in XML format composed of job image data and log information, and generating a hash value of the image log information;
A program for controlling the digital multifunction peripheral having an image log information transmission module of an image log information transmission step for transmitting the image log information and the hash value generated by the image log information generation step to the document management server;
An image log information receiving module in an image log information receiving step for receiving image log information and a hash value from the digital multifunction peripheral;
The image log information storage module of the image log information storage step for storing the image log information received by the image log information reception step in association with the hash value received by the image log information reception step in the XML format,
An image log information search module in an image log information search step for searching image log information in XML format stored by the image log information storage step based on a search request received from the document management client;
A falsification detection request receiving module in a falsification detection request reception step for receiving a falsification detection request from the document management client;
Based on the falsification detection request received in the falsification detection request receiving step, the hash value generated from the designated image log information is compared with the hash value stored in association with the image log information, and the image A program for controlling the document management server having a falsification detection response module of a falsification detection response step for determining whether log information has been falsified and transmitting the determination result to the document management client;
A falsification detection request transmission module of a falsification detection request transmission step for transmitting a falsification detection request of designated image log information to the document management server;
A program for controlling the document management client having a falsification detection result display module of a falsification detection result display step for receiving and displaying the determination result in response to a falsification detection request transmitted in the falsification detection request transmission step; A storage medium characterized by being stored.

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