JP2006203317A - Document management system, and control method thereof, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document management system capable of displaying image data whose data size is greater and managed by a digital composite machine at a high speed without consuming many memory capacities, and to provide a control method thereof and a storage medium. <P>SOLUTION: The document management system includes: a device control section for controlling two-way communication with the digital composite machine; an image designation section for designating a desired image stored in the digital composite machine; an image upload section for uploading the designated image; an interleaving image generating section for generating an interleaved image from the image uploaded from the digital composite machine; a display image generating section for generating a display image according to a display magnification designated from the interleaved image; and an image display section for displaying the image. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a document management system that stores image data or document data created by a word processor or the like in association with document management information such as a keyword, and searches, displays, prints, etc. on the information. In particular, the present invention relates to a document management system connected to a digital multifunction peripheral capable of storing image data via a network, a control method therefor, and a storage medium.

  Conventionally, document management information such as keywords is stored in association with image data of a document created by reading data such as printed characters, graphics, and images with a scanner device or the like, or document data created by a word processor or the like. A document management system that searches, displays, prints, etc. for these pieces of information has been proposed.

  In addition, such a document management system is connected to a digital multi-function peripheral capable of storing image data via a network, and can also perform integrated document management on image data stored in the digital multi-function peripheral. What can be done has also been proposed (see, for example, Patent Document 1).

  For example, as shown in FIG. 11, such a document management system includes a document management client 1100, a document management server 1101, a volume server 1103, and a digital multifunction peripheral 1105, which are connected via a network 1107. . The document management server 1101 can manage image data and document data as documents stored in a hierarchical folder, and includes an RDBMS (Relational Database) for managing the inclusion relationship between folders, documents, and pages and their attributes. In Management System), folder attributes, document attributes, page attributes, etc. are stored in the attribute database file 1102. The volume server 1103 is a server for managing actual data associated with pages by the document management server 1101, and stores image data, document data, and the like in the volume file 1104. The digital multifunction peripheral 1105 is an image forming apparatus having complex functions such as a copy, a scanner, a printer, and a FAX, and can manage image data read from the scanner and image data received by FAX as a document stored in a box. In this manner, the box file 1106 is stored in association with the box attribute, the document attribute, and the page attribute. The digital multi-function peripheral 1105 has a function of performing bidirectional communication with various applications on the network 1107 including the document management client 1100 using a device control protocol defined on a network protocol such as UDP / IP or TCP / IP. Yes. The document management client 1100 is a client of the document management system, and can search and display documents managed by the document management server 1101 and the volume server 1103. In this case, the document management client 1100 transmits various requests to the document management server 1101 using the SQL (Structured Query Language) protocol defined on the TCP / IP protocol, and receives processing results from the document management server 1101. At the same time, when further processing for image data or document data occurs, various requests are transmitted to the volume server 1103 by RPC (Remote Procedure Call), and the processing results are received from the volume server 1103. The document management client 1100 can also display and print a document managed by the digital multifunction peripheral 1105. In this case, the document management client 1100 transmits various requests to the digital multifunction peripheral 1105 using the device control protocol, and receives processing results from the digital multifunction peripheral 1105.

  FIG. 12 shows an example of a display screen for displaying folders and boxes and their document lists in the document management client 1100 of such a document management system. In the figure, folders managed by the document management server 1101 are hierarchically displayed as folder items in the lower area 1203 of the cabinet item 1202 in the classification display area 1200 and boxes managed by the digital multifunction peripheral 1105. Is displayed as a box item in the lower area 1205 of the device item 1204. Further, a box 1206 is designated by the operator, and a document attribute of a document stored in the box file 1206 in association with the box 1206 is displayed in the document list display area 1201.

  FIG. 13 is a block diagram for explaining processing for displaying image data of a specified page of a document in a box in the document management client 1100. The image designation unit 1300 supplies an identifier specified from the document and page number designated by an operator instruction or the like to the image upload unit 1301. The identifier is a 4-byte integer value for specifying the image data in the digital multifunction peripheral 1105, and the digital multifunction peripheral 1105 stores the image data in the box file 1106 in association with the identifier and the page attribute. Further, the document management client 1100 acquires and holds identifiers corresponding to all pages in the document from the digital multifunction peripheral 1105 before this processing. The image upload unit 1301 receives an identifier from the image designating unit 1300, supplies a request for uploading image data with the identifier to the device control unit 1302, receives compressed image data as a processing result from the device control unit 1302, and performs compression of the compressed image data. The image data is stored in an external storage device such as a hard disk, and the reference information is supplied to the image development unit 1303. The device control unit 1302 receives an image data upload request from the image upload unit 1301 together with an identifier, transmits the request to the digital multifunction peripheral 1105 by a device control protocol, and, as a response, the compressed image data specified by the identifier is digitally combined. The compressed image data is received from the machine 1105 and supplied to the image upload unit 1301. The image expansion unit 1303 receives the reference information of the compressed image data from the image upload unit 1301, reads the compressed image data from the external storage device, performs only raster conversion processing in the case of monochrome compressed image data, and performs color compression In the case of data, after performing raster conversion processing, color space conversion processing, background removal processing, and the like are performed. Then, developed image data of the processing result is written in the memory, and the reference information is supplied to the display image creation unit 1305. The display magnification designation unit 1304 supplies the display magnification designated by an operator instruction or the like to the display image creation unit 1305. The display image creating unit 1305 receives reference information of the developed image data from the image developing unit 1303, receives the display magnification from the display magnification specifying unit 1304, performs enlargement / reduction processing according to the display magnification, and displays the display image of the processing result. Data is written in the memory, and the reference information is supplied to the image display unit 1306. The image display unit 1306 receives display image data reference information from the display image creation unit 1305 and displays the display image data on a display device or the like.

FIG. 14 is an example of a display screen of image data of a document in a box in the document management client 1100. In the drawing, the document 1401 associated with the box 1400 is selected by the operator, and the image data of the first page of the document 1401 is displayed in the page image display area 1402.
JP 2003-87484 A

  However, when the document management client 1100 displays the page image data of a document in the above-described prior art document management system, high-quality display image data is created at high speed even when the display magnification is changed after being displayed once. In order to redo, it is necessary to store not only the display image data to be actually displayed but also the developed image data of the entire image having the same resolution as the original compressed image data in the memory. For this reason, when displaying image data having a large data size, such as high-resolution compressed image data of a color document managed by the digital multi-function peripheral 1105, there is a problem that a large amount of memory is wasted. In addition, there is a problem that it takes a very long time to perform color space conversion processing and background removal processing after raster conversion processing for creating developed image data, and enlargement / reduction processing for generating display image data thereafter. there were.

  The present invention has been made in view of the above problems, and is a document management system capable of displaying image data having a large data size managed by a digital multifunction peripheral at high speed without consuming a large amount of memory. And a control method thereof, and a storage medium.

In order to achieve the above object, a document management system according to a first aspect of the present invention is a document management system connected to a digital multifunction peripheral capable of storing images via a network.
Device control means for controlling two-way communication with the digital multifunction peripheral;
Image designating means for designating a desired image stored in the digital multifunction peripheral;
Image upload means for uploading the image designated by the image designation means by the device control means;
A thinned image creating means for creating a thinned image from an image uploaded from the digital multifunction peripheral by the image uploading means;
A display magnification specifying means for specifying the display magnification of the image;
Display image creation means for creating an image for display according to the display magnification designated by the display magnification designation means from the thinned image created by the thinned image creation means;
A document management system comprising image display means for displaying an image created by the display image creation means.

  The document management system according to a second aspect of the present invention is the document management system according to the first aspect, wherein the thinned image creating means creates a thinned image having a predetermined resolution when the resolution of the uploaded image is equal to or higher than a predetermined resolution. This is a document management system.

  The document management system according to a third aspect of the present invention is the document management system according to the first aspect, wherein the thinned-out image creating means is configured for each image type when the resolution of the uploaded image is equal to or higher than a resolution determined for each image type. A document management system characterized in that a thinned image having a predetermined resolution is created.

A document management system control method according to a fourth aspect of the present invention is a document management system control method connected to a digital multi-function peripheral capable of storing images via a network.
A device control step for controlling two-way communication with the digital multifunction peripheral;
An image designating step for designating a desired image stored in the digital multi-function peripheral;
An image uploading step of uploading the image designated by the image designation step by the device control step;
A thinned image creating step for creating a thinned image from the image uploaded from the digital multifunction peripheral by the image uploading step;
A display magnification specifying step for specifying the display magnification of the image;
A display image creation step of creating an image for display according to the display magnification designated by the display magnification designation step from the thinned image created by the thinning image creation step;
An image display step of displaying an image created by the display image creation step is executed.

  In the control method of the document management system according to the fifth aspect of the present invention, in the fourth aspect, the thinned image creating step creates a thinned image with a predetermined resolution when the resolution of the uploaded image is equal to or higher than a predetermined resolution. This is a control method for a document management system.

  The document management system control method according to a sixth aspect of the present invention is the control method according to the fourth aspect, wherein the thinned-out image creating step is performed when the resolution of the uploaded image is equal to or higher than a resolution determined for each image type. A control method of a document management system, characterized in that a thinned image with a resolution determined for each type is created.

A storage medium according to a seventh invention is a storage medium for storing a program for controlling the document management system,
A device control module of a device control step for controlling bidirectional communication with the digital multifunction peripheral;
An image designation module in an image designation step for designating a desired image stored in the digital multifunction peripheral;
An image upload module of the image upload step for uploading the image designated by the image designation step by the device control step;
A thinned image creating module for creating a thinned image from an image uploaded from the digital multifunction peripheral by the image uploading step;
A display magnification specifying module for a display magnification specifying step for specifying a display magnification of the image;
A display image creation module in a display image creation step for creating an image for display according to the display magnification designated in the display magnification designation step from the thinned image created in the thinning image creation step;
A storage medium storing a program having an image display module of an image display step for displaying an image created by the display image creation step.

  According to the document management system, the control method thereof, and the storage medium of the present invention, image data having a large data size managed by the digital multi-function peripheral can be displayed at high speed without consuming much memory. There is an effect.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  FIG. 1 is a block diagram illustrating the overall configuration of a document management system according to an embodiment of the present invention. The document management system includes a document management client 100, a document management server 110, and a volume server 120. These may be configured by separate personal computers connected by the network 140 as in the present embodiment, or may be configured by one personal computer. The document management client 100 is connected to the digital multi-function peripheral 130 via the network 140.

  The document management client 100 is a client of this document management system that integrally handles documents managed by the document management server 110 and the volume server 120 and documents managed by the digital multi-function peripheral 130, and is a user interface (UI). Unit 101, client processing unit 102, and network I / F 103. A user interface (UI) unit 101 receives instructions from an operator related to each function of the document management client 100 such as document registration, search, and display, 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 document registration, search, and display, and performs processing for the document management server 110, the volume management server 120, and the digital multifunction peripheral 130. When processing occurs, various request commands are transmitted to these, and responses are received.

  The document management server 110 is a server for managing the inclusion relationship between folders, documents, and pages and their attributes so that image data and document data can be managed as documents stored in a hierarchical folder. An I / F 111, a document management server processing unit 112, and an attribute storage unit 113 are included. A network I / F 111 is connected to the network 140 and performs processing of a network protocol such as TCP / IP. The document management server processing unit 112 includes a CPU, a memory, and the like. The document management server processing unit 112 receives a request command from the client processing unit 102, performs processing such as update and search on the attribute storage unit 113, and sends the processing result to the client processing unit. 102. The attribute storage unit 113 stores folder attributes, document attributes, page attributes, and the like, and is usually a hard disk or the like.

  The volume server 120 is a server for accumulating and managing actual data such as document data and image data associated with pages in the document management server 110, and includes a network I / F 121, a volume server processing unit 122, And a volume storage unit 123. The network I / F 121 is connected to the network 140 and performs processing of a network protocol such as TCP / IP. The volume server processing unit 122 includes a CPU, a memory, and the like. The volume server processing unit 122 receives a request command from the client processing unit 102, performs processing such as update and data acquisition on the volume storage unit 123, and processes the processing result as client processing. To the unit 102. The volume storage unit 123 stores document data and image data, and is usually a hard disk or the like.

  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 reads the image data read from the scanner unit 131, the image data received by FAX from the public line (WAN) 150, and the image data obtained by expanding the PDL code received from the network (LAN) 140 into a bitmap image. The box storage unit 135 stores the information in association with the box attribute, the document attribute, and the page attribute so that the document can be managed as a document stored in the box. The image data stored in the box storage unit 135 can be printed from the printer unit 132 by an instruction from the operation unit 134 or an instruction from the user interface (UI) unit 101 of the document management client 100. The controller unit 133 receives a request command from the client processing unit 102, performs processing such as document operation and image data acquisition on the box storage unit 135, and transmits the processing result to the client processing unit 102.

  FIG. 2 is a block diagram showing a functional configuration of the document management system 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 cabinet document management unit 202, a database communication unit 203, a volume communication unit 204, a box document management unit 205, and a device communication unit 206. The 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 document management server 110 and the volume management server 120 occurs, the request is supplied to the cabinet document management unit 202, and the processing result is received from the cabinet document management unit 202. When processing occurs, the request is supplied to the box document management unit 205 and the processing result is received from the box document management unit 205. The image processing unit 201 performs image processing such as image expansion, compression, color space conversion, background removal, enlargement / reduction, and rotation in accordance with requests from the client application unit 200, the cabinet document management unit 202, and the box document management unit 205. Do. The cabinet document management unit 202 enables requests to the document management server 110 and the volume server 120 by an object model including cabinets, folders, documents, and pages, and references to folder attributes, document attributes, and page attributes. When processing such as update occurs, the request is supplied to the database communication unit 203 and the processing result is received from the database communication unit 203, and processing such as registration, deletion, and acquisition of image data and document data occurs. If so, the request is supplied to the volume communication unit 204, and the processing result is received from the volume communication unit 204. The database communication unit 203 transmits a request command for the document management server 110 to the database communication unit 207 using the SQL (Structured Query Language) protocol defined on the TCP / IP protocol, and receives the response command from the database communication unit 207. To do. The volume communication unit 204 transmits a request command for the volume server 120 to the volume communication unit 209 by RPC (Remote Procedure Call), and receives a response command from the volume communication unit 209. The box document management unit 205 makes a request for the digital multifunction peripheral 130 using an object model composed of a device, a box, a document, and a page, and supplies the request for the digital multifunction peripheral to the device communication unit 206. A processing result is received from the device communication unit 206. The device communication unit 206 transmits a request command to the digital multi-function peripheral 130 to the controller unit 133 by a device control protocol defined on a network protocol such as UDP / IP, TCP / IP, and the response command is sent from the controller unit 133. Receive.

  Next, the document management server processing unit 112 of the document management server 110 includes a database communication unit 207 and a database processing unit 208. When the database communication unit 207 receives a request command for the document management server 110 from the database communication unit 203 by the SQL (Structured Query Language) protocol defined on the TCP / IP protocol, the database communication unit 207 supplies the request to the database processing unit 208. The processing result is transmitted to the database communication unit 203 as a response command. The database processing unit 208 is an RDBMS (Relational Database Management System) for managing the inclusion relationship between folders, documents, and pages and their attributes, and processes such as updating and searching for the attribute storage unit 113 that is a database file. I do.

  FIG. 3 is an example of table definition in the attribute storage unit 113 for the database processing unit 208 to manage the inclusion relationship between folders, documents, and pages and their attributes. The folder management table 300 includes a folder ID for identifying a folder, a parent folder ID for identifying a parent folder, a folder name, and a creation date and time. Whether the document management table 301 is a document ID for identifying a document, a parent folder ID for identifying a parent folder, a document name, a size, the number of pages, and an image document that is a collection of image data. It consists of a document type for identifying the document data of which application, a creation date and time, and a keyword for searching for a document. The page management table 302 includes a page ID for identifying a page, a parent document ID for identifying a parent document, a page number, a page type for identifying a file format of page data, and image data. In this case, it is composed of a paper size for identifying the paper size, a file size, and a volume ID for identifying image data and document data managed by the volume server 120.

  Next, the volume server processing unit 122 of the volume server 120 includes a volume communication unit 209 and a volume processing unit 210. When the volume communication unit 209 receives a request command for the volume server 120 from the volume communication unit 204 by RPC (Remote Procedure Call), the volume communication unit 209 supplies the request to the volume processing unit 210 and uses the processing result as a response command for volume communication. To the unit 204. The volume processing unit 210 performs processing such as update and data acquisition on the volume storage unit 123 that is a volume file.

  FIG. 4 is a data configuration example in the volume storage unit 123 for the volume processing unit 210 to add and acquire image data and document data. The volume management file 400 includes a volume ID for identifying data, a file name for identifying a volume storage file in which data is stored, an offset that is a data storage start position, and a data size. Is done. In the volume storage file 401, actual image data and document data are continuously stored.

  FIG. 5 is a block diagram showing the configuration of the digital multi-function 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 500 denotes a CPU, which is a controller that controls the entire system. A RAM 501 is a system work memory for the CPU 500 to operate, and is also an image memory (buffer memory) for temporarily storing input image data. Reference numeral 502 denotes a ROM which is a boot ROM and stores a system boot program. A hard disk drive (HDD) 503 stores system software and image data.

  An operation unit I / F 504 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. Further, the operation unit I / F 504 serves to transmit information input by the operator from the operation unit 134 to the CPU 500.

  Reference numeral 505 denotes a network unit (Network) which is connected to the network (LAN) 140 and inputs / outputs information. A modem (MODEM) 506 is connected to the public line (WAN) 150 and inputs / outputs image information. The above devices are arranged on the system bus 507.

  Reference numeral 508 denotes an image bus I / F, which is a bus bridge that connects the system bus 507 and an image bus 509 that transfers image data at high speed, and converts the data structure. The image bus 509 is configured by a PCI bus or IEEE1394. The following devices are arranged on the image bus 509.

  A raster image processor (RIP) 510 expands the PDL code into a bitmap image. A device I / F unit 511 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 512 and the printing unit interface 513, and is a synchronous / asynchronous system for image data. Perform the conversion. A scanner image processing unit 514 corrects, processes, and edits input image data. The scanner image processing unit 514 has a function of determining whether the input image is a color document or a monochrome document from the saturation signal of the image and holding the result. A printer image processing unit 515 corrects, processes, and edits output image data.

  An image rotation unit 516 cooperates with the scanner image processing unit 514 to rotate and store the image on the memory simultaneously with the image reading from the scanner unit 131, or rotate the image on the memory and store it on the memory. Alternatively, the image on the memory can be printed out while rotating in cooperation with the printer image processing unit 515. Reference numeral 517 denotes an image compression unit which performs JPEG for multilevel image data and JBIG, MMR, MR, and MH for binary image data. A resolution conversion unit 518 performs resolution conversion processing on the image on the memory and stores the image on the memory. Reference numeral 519 denotes a color space conversion unit that converts, for example, a YUV image on the memory into a Lab image by matrix calculation and stores the image on the memory. A gradation conversion unit 520 converts, for example, an 8-bit, 256-gradation image on the memory into 1-bit, 2-gradation by a technique such as error diffusion processing and stores it on the memory. The image rotation unit 516, the image compression unit 517, the resolution conversion unit 518, the color space conversion unit 519, and the gradation conversion unit 520 can operate in conjunction with each other, for example, rotate an image on a memory and perform resolution conversion. In this case, both processes can be performed without going through the memory.

  FIG. 6 is a display screen example of a folder and a box and its document list in the document management client 100 of the document management system configured as shown in FIG. In the figure, folders managed by the document management server 100 are hierarchically displayed as folder items in the lower area 603 of the cabinet item 602 in the classification display area 600 and boxes managed by the digital multifunction peripheral 130. Is displayed as a box item in the lower area 605 of the device item 604. In addition, the box 606 is designated by the operator, and the document attributes of the documents stored in the box storage unit 135 in association with the box 606 are displayed in the document list display area 601.

  FIG. 7 is a block diagram illustrating processing for displaying image data of a specified page of a document in a box in the document management client 100 of the document management system configured as shown in FIG. The image designation unit 700 supplies the image upload unit 701 with a page identifier specified from the document designated by the operator's instruction and the page number.

  The identifier is a 4-byte unique integer value for specifying a document or page in the digital multifunction peripheral 130. The digital multifunction peripheral 130 determines the image data as a page identifier and page attributes such as color information and resolution information. And stored in the box storage unit 135. The image data stored in the box storage unit 135 is compressed image data such as JPEG in the case of a color or grayscale multi-valued image, and is compressed image data such as JBIG or MRR in the case of a monochrome binary image. . Further, the document management client 100, in another processing unit performed before this processing, sets the identifier of the designated document, the identifiers of all pages in the document, and the page attributes associated with the identifiers to the device. It is acquired from the digital multi-function peripheral 130 by the control protocol and stored in the memory.

  Next, the image upload unit 701 receives a page identifier from the image designation unit 700, supplies a request for uploading image data of the identifier to the device control unit 702, and uses the compressed image data as the processing result as the device control unit 702. The compressed image data is stored in an external storage device such as a hard disk, and the reference information is supplied to the thinned image creating unit 703. The device control unit 702 receives an image data upload request from the image upload unit 701 together with a page identifier, transmits the request to the controller unit 133 of the digital multifunction peripheral 130 by a device control protocol, and is identified by the identifier as a response to the request. The compressed image data in the box storage unit 135 is received from the controller unit 133 of the digital multi-function peripheral 130, and the compressed image data is supplied to the image upload unit 701. The thinned image creation unit 703 receives the compressed image data reference information from the image upload unit 701, reads the compressed image data from the external storage device into the memory, and generates decompressed image data with a predetermined resolution according to the color information and resolution information of the page attribute. The data is written in the memory, and the reference information is supplied to the display image creation unit 705. The display magnification designation unit 704 supplies the display magnification designated by an operator instruction or the like to the display image creation unit 705. The display image creation unit 705 receives the reference information of the developed image data from the thinned image creation unit 703, receives the display magnification from the display magnification designation unit 704, performs enlargement / reduction processing according to the display magnification, and displays the processing result The image data is written in the memory, and the reference information is supplied to the image display unit 706. The image display unit 706 receives display image data reference information from the display image creation unit 705 and displays the display image data on a display device or the like.

  Next, the operation of the developed image data creation process in the thinned image creation unit 703 will be described with reference to the flowchart of FIG.

  First, the image upload unit 701 starts processing by saving the compressed image data in a predetermined file (step S800), and reads the compressed image data stored in the file into the buffer data (step S801). Next, with reference to the color information of the page attributes acquired in advance, it is determined whether the image is a color or grayscale multi-value image or a monochrome binary image (step S802).

  In the case of a multi-valued image of color or gray scale, next, reference is made to the resolution information of the page attribute to determine whether the resolution in either the main scanning direction or the sub-scanning direction is 400 dpi or more (step S803). If the resolution in either the scanning direction or the sub-scanning direction is 400 dpi or higher, it is further determined whether the resolution in either the main scanning direction or the sub-scanning direction is 600 dpi or higher (step S804). If either resolution in the scanning direction is 600 dpi or higher, compressed image data such as JPEG in the buffer data is developed into a raster image by 1/3 simple decimation (step S806), and the main scanning direction and sub-scanning direction If neither of these resolutions is 600 dpi or higher, the compressed image data such as JPEG in the buffer data is reduced to a simple interval of 1/2. To expand the raster image in the gas (step S805). Next, background removal processing and color space conversion processing from YUV to sRGB are performed (step S807), the raster image is reduced to 192 dpi in both the main scanning direction and the sub-scanning direction (step S808), and the developed image data is used. Writing to the buffer raster (step S814), the process is terminated (step S815). If the resolution in both the main scanning direction and the sub-scanning direction is not 400 dpi or higher in step S803, compressed image data such as JPEG in the buffer data is developed into a raster image without being thinned (step S809), and the background is skipped. Processing or color space conversion processing from YUV to sRGB is performed (step S810), the raster image is written in the buffer raster (step S814), and the processing is terminated (step S815).

  In the case of a monochrome binary image in step S802, compressed image data such as JBIG and MMR in the buffer data is developed into a raster image (step S811), and then the resolution in either the main scanning direction or the sub-scanning direction is developed. Is determined to be 800 dpi or higher (step S812). If the resolution in either the main scanning direction or the sub-scanning direction is 800 dpi or higher, the multi-value is converted to 8 bits and both the main scanning direction and the sub-scanning direction are set. The raster image is reduced to 384 dpi (step S813), the raster image is written into the buffer raster (step S814), and the process is terminated (step S815). If neither the resolution in the main scanning direction nor the sub-scanning direction is 800 dpi or higher, the reduction process in step S813 is not performed, the raster image in step S811 is written in the buffer raster (step S814), and the process ends (step S813). S815).

  FIG. 9 is an example of the display screen of the image data of the in-box document in the document management client 100 as described above. In the drawing, the document 901 associated with the box 900 is selected by the operator, and the image data of the designated page of the document 901 is displayed in the page image display area 902. In addition, the state displayed in the status area 903 indicates that the image displayed in the page image display area 902 is an image displayed based on the thinned image data.

  In FIG. 10, a “device control module” is a program module for controlling bidirectional communication with the digital multi-function peripheral. The “image designation module” is a program module for designating a desired image stored in the digital multi-function peripheral. The “image upload module” is a program module for uploading a designated image. The “thinned image creation module” is a program module for creating a thinned image from an image uploaded from the digital multifunction peripheral. The “display magnification designation module” is a program module for designating the image display magnification. The “display image creation module” is a program module for creating a display image in accordance with a designated display magnification from the created thinned image. The “image display module” is a program module for displaying the created display image.

1 is a block diagram showing an overall configuration of a document management system in an embodiment of the present invention. It is a block diagram which shows the function structure of the system. It is a figure which shows the example of a table definition in the attribute memory | storage part of the same system. It is a figure which shows the example of a data structure in the volume storage part of the same system. 1 is a block diagram illustrating a configuration of a digital multifunction peripheral. It is a figure which shows the example of a display screen of a box and a folder and its document list in the document management client of the same system. It is a block diagram explaining the process which displays the image data of the designated page of the document in a box in the document management client of the same system. It is a flowchart explaining the creation process of the expansion | deployment image in the thinning image creation part of the same system. It is a figure which shows the example of a display screen of the image data of the document in a box in the document management client of the same system. It is a figure which shows the structure of the storage medium which stored the control program for controlling the document management system in the Example of this invention. It is a block diagram which shows the structure of the whole document management system of a prior art. It is a figure which shows the example of a display screen of a box and a folder and its document list in the document management client of the document management system of a prior art. It is a block diagram explaining the process which displays the image data of the designated page of the document in a box in the document management client of the document management system of a prior art. It is a figure which shows the example of a display screen of the image data of the document in a box in the document management client of the document management system of a prior art.

Explanation of symbols

100 Document Management Client 101 User Interface (UI) Unit 102 Client Processing Unit 103 Network I / F
110 Document management server 111 Network I / F
112 Document management server processing unit 113 Attribute storage unit 120 Volume server 121 Network I / F
122 Volume Server Processing Unit 123 Volume Storage Unit 130 Digital Multifunction Device 131 Scanner Unit 132 Printer Unit 133 Controller Unit 134 Operation Unit 135 Box Storage Unit 140 Network (LAN)
150 Public line (WAN)

Claims (7)

In a document management system connected via a network to a digital multifunction device that can store images,
Device control means for controlling two-way communication with the digital multifunction peripheral;
Image designating means for designating a desired image stored in the digital multifunction peripheral;
Image upload means for uploading the image designated by the image designation means by the device control means;
A thinned image creating means for creating a thinned image from an image uploaded from the digital multifunction peripheral by the image uploading means;
A display magnification specifying means for specifying the display magnification of the image;
Display image creation means for creating an image for display according to the display magnification designated by the display magnification designation means from the thinned image created by the thinned image creation means;
A document management system comprising image display means for displaying an image created by the display image creation means.   2. The document management system according to claim 1, wherein the thinned image creating means creates a thinned image with a predetermined resolution when the resolution of the uploaded image is equal to or higher than a predetermined resolution.   2. The thinned-out image creating unit creates a thinned-out image with a resolution determined for each image type when the resolution of the uploaded image is equal to or higher than a resolution determined for each image type. Document management system described. In a control method of a document management system connected to a digital multi-function peripheral capable of storing images via a network,
A device control step for controlling two-way communication with the digital multifunction peripheral;
An image designating step for designating a desired image stored in the digital multi-function peripheral;
An image uploading step of uploading the image designated by the image designation step by the device control step;
A thinned image creating step for creating a thinned image from the image uploaded from the digital multifunction peripheral by the image uploading step;
A display magnification specifying step for specifying the display magnification of the image;
A display image creation step of creating an image for display according to the display magnification designated by the display magnification designation step from the thinned image created by the thinning image creation step;
An image display step for displaying an image created by the display image creation step.   5. The method of controlling a document management system according to claim 4, wherein the thinned image creating step creates a thinned image having a predetermined resolution when the resolution of the uploaded image is equal to or higher than a predetermined resolution.   5. The thinned image creating step creates a thinned image having a resolution determined for each image type when the resolution of the uploaded image is equal to or higher than a resolution determined for each image type. A control method of the document management system described. A storage medium for storing a program for controlling a document management system,
A device control module of a device control step for controlling bidirectional communication with the digital multifunction peripheral;
An image designation module in an image designation step for designating a desired image stored in the digital multifunction peripheral;
An image upload module of the image upload step for uploading the image designated by the image designation step by the device control step;
A thinned image creating module for creating a thinned image from an image uploaded from the digital multifunction peripheral by the image uploading step;
A display magnification specifying module for a display magnification specifying step for specifying a display magnification of the image;
A display image creation module in a display image creation step for creating an image for display according to the display magnification designated in the display magnification designation step from the thinned image created in the thinning image creation step;
A storage medium storing a program having an image display module of an image display step for displaying an image created by the display image creation step.