JP2013073605A - Drawing management device, drawing management method and drawing management program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawing management device capable of not only surely and safely preserving an original copy of a digital drawing but also browsing and reusing the original copy.SOLUTION: A preserving and storing area data base 200 stores the digital drawing to be a long-term preserving target. When a drawing user browses the preserved drawing, the drawing is provided at low resolution. When the drawing user wants to use drawing data from the browsed digital drawing, the drawing data is copied to a work storage area 100 to be made available when the use is approved by the drawing management device.

Description

  The present invention relates to a drawing management apparatus, a drawing management method, and a drawing management program for safely storing digital drawings.

In recent years, with the development of IT technology and the enhancement of network environment, various data (eg, documents, photos, videos, drawings, etc.) that have been stored and stored in paper media for a long time are widely stored as digital data. It has become like this. By storing as digital data, there is a great merit that the data is not deteriorated and can be easily reused. Another advantage is that space for storage can be saved.
By the way, design drawings used for construction are required to be stored for a long time. For this reason, a certification time stamp or a long-term signature format conforming to the JIS standard is given to the digital drawing to ensure the evidence of the drawing data.
On the other hand, there is also a demand for browsing past drawing data in various cases to reference new designs and modifications. That is, it can be said that the stored digital data is a valuable company (organization) property.

In general, there are requests for easy reuse of stored digital data, and conflicting requests for strict management to prevent misuse.
The invention described in Patent Document 1 relates to a drawing management system, and saves all drawings in a file format of 2D-CDA software, including drawings created by 3D-CDA software, so that convenience and safety of drawing usage are secured. This is a technology that ensures the safety.

JP 2008-191806 A

By the way, if digital drawings such as completed drawings of buildings that are required to be stably stored for a long period of time are easily allowed to be searched and viewed or permitted to be reused, information leakage or alteration of original drawings There was a risk of deletion.
SUMMARY OF THE INVENTION An object of the present invention is to provide a drawing management apparatus, a drawing management method, and a drawing management program that can securely and safely store an original digital drawing, while allowing browsing and reuse.

According to the first aspect of the present invention, there is provided a first data storage means that is accessible from a user via a network and functions as a working storage area, and a second data storage means for storing a digital drawing. A drawing management apparatus, wherein the drawing data moving means for moving the drawing data of the digital drawing from the first data storing means to the second data storing means and storing it as an original, and moved by the drawing data moving means The browsing request receiving unit that receives a browsing request for drawing data of a digital drawing stored as an original in the second storage unit, and the browsing request is received when the browsing request is received by the browsing request receiving unit. Disclosing means for reducing the resolution of the drawing data of the digital drawing, and drawing data of the digital drawing disclosed by the disclosing means A reuse request receiving means for receiving a use request; a reuse request determining means for determining whether or not the reuse request received by the reuse request receiving means is based on a predetermined criterion; and the reuse request determining means. If it is determined that reuse is possible, drawing data that can be reused by transferring a copy of the original drawing data of the digital drawing from the second data storage means to the first data storage means The object is achieved by providing a drawing management apparatus characterized by comprising an assigning means.
According to a second aspect of the present invention, in the first aspect of the present invention, the drawing data adding unit differs from the original when transferring a copy of the original from the second data storage unit to the first data storage unit. A drawing management number is assigned.
In the invention described in claim 3, in the invention described in claim 1 or claim 2, the original moved to the second data storage means is stored with a certified time stamp or a long-term signature format conforming to the JIS standard. It is the drawing data of the digital drawing made.
According to a fourth aspect of the present invention, in the first aspect of the present invention, when the drawing data moving means moves and saves the drawing data of the digital drawing in the second data storage means, one or more of the digital drawing is stored. A digital drawing creating means for acquiring attribute information and reducing the resolution of the drawing data for browsing and creating drawing data for searching and for searching and drawing for searching, wherein the disclosing means accepts the browsing request and the drawing of the digital drawing When the data is disclosed with a reduced resolution, the digital drawing for browsing and searching created by the digital drawing creating means for browsing and searching is disclosed.
According to the fifth aspect of the present invention, the first data storage means that can be accessed from the user via the network and functions as a working storage area, and the second data storage means for storing the digital drawing are provided. In the drawing management apparatus, the drawing data moving step of moving the drawing data of the digital drawing from the first data storing means to the second data storing means and storing it as an original, and the drawing data moving step are moved, A browsing request receiving step for receiving a browsing request for drawing data of a digital drawing stored as an original in the second storage means, and when the browsing request is received in the browsing request receiving step, the browsing request is a target. A disclosure step in which the resolution of the drawing data of the digital drawing is reduced and the data disclosed in the disclosure step; A reuse request receiving step for receiving a reuse request for drawing data of a tall drawing, and a reuse request determining step for determining whether or not the reuse request received in the reuse request receiving step is based on a predetermined determination criterion; If it is determined in the reuse request determination step that reuse is possible, a copy of the original drawing data of the digital drawing is transferred from the second data storage means to the first data storage means. The object is achieved by providing a drawing management method characterized by comprising a drawing data adding step for making it reusable.
The invention according to claim 6 includes a first data storage means that is accessible from a user via a network and functions as a working storage area, and a second data storage means for storing a digital drawing. In the drawing management apparatus, the drawing data moving function for moving the drawing data of the digital drawing from the first data storing means to the second data storing means and storing it as an original, and the drawing data moving function, When a browsing request is received by the browsing request receiving function and a browsing request receiving function that receives a browsing request for drawing data of a digital drawing stored as an original in the second storage means, the browsing request is a target. A disclosure function that lowers the resolution of drawing data of a digital drawing and a drawing function of the digital drawing disclosed by the disclosure function; A reuse request receiving function for receiving a use request, a reuse request determining function for determining whether or not the reuse request received by the reuse request receiving function is based on a predetermined determination criterion, and the reuse request determining function. If it is determined that reuse is possible, drawing data that can be reused by transferring a copy of the original drawing data of the digital drawing from the second data storage means to the first data storage means The object is achieved by providing a drawing management program that causes a computer to realize the assigning function.

According to the invention of claim 1, claim 5 and claim 6, when there is a reuse request, the drawing data to be given is a copy of the original, so the original is saved as it is, and there is no processing / correction etc. Not given. Therefore, there is no possibility that the originality of the digital drawing stored for a long time is impaired.
In the invention described in claim 2, since the drawing management number different from that of the original is given, there is no possibility that the originality of the digital drawing is impaired by confusing both.
In the invention described in claim 3, since the original is stored with a certified time stamp or a long-term signature format conforming to the JIS standard, the evidence of the original of the digital drawing can be secured more reliably.
In the invention according to claim 4, by separately preparing digital drawings for browsing and searching, the safety of the stored original is further secured, and browsing and searching are facilitated.

It is a figure explaining the outline of the system using the drawing management apparatus concerning this embodiment. It is the block diagram which showed the structure of the drawing management apparatus used by this embodiment. It is a figure explaining the digital drawing for browsing and search corresponding to the digital drawing preserve | saved at a preservation | save storage area database. It is the flowchart which showed the process sequence until it preserve | saves a digital drawing in the preservation | save storage area database of this embodiment. It is the flowchart which showed the process sequence for reusing the digital drawing preserve | saved at the preservation | save storage area database of this embodiment.

Hereinafter, a drawing management apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS.
(1) Outline of Embodiment As shown in the outline of the system using the drawing management apparatus 300 in FIG. 1, the drawing management apparatus 300 has two areas for storing drawing data of digital drawings created by CAD or the like. There are places. There are a working storage area database 100 that functions as a working storage area and a storage area database 200 that functions as a storage area.
The work storage area database 100 stores various drawing data used for current work, for example, construction work and civil engineering work. When the working storage database 100 is accessed from a drawing user (user) PC via a network, the drawing management apparatus 300 allows access relatively easily without strict authentication.

On the other hand, the storage database 200 stores various digital drawings that are targets of long-term storage.
When accessing from a drawing user's PC via a network, the drawing management apparatus 300 permits browsing and searching of digital drawings through strict authentication and the like, and drawing data to be provided has a reduced resolution. .
When receiving an application requesting to use certain drawing data from among the digital drawings viewed from the drawing user's PC, the drawing management device 300 determines whether or not it matches a predetermined standard for permitting use. I do. As a result of this determination, when the use is accepted, the drawing data is copied to the working storage area database 100.

(2) Details of Embodiment First, an outline of a system using a drawing management apparatus 300 according to the present embodiment will be described with reference to FIG.
In this embodiment, a construction drawing of a building will be described as an example. In this embodiment, the digital drawing refers to a combination of created drawing data such as CAD and data such as a drawing number.
The work storage area database 100 stores digital drawings of construction drawings currently being constructed or planned to be constructed.
The drawing management device 300 is used by drawing users, for example, designers and construction personnel, who frequently access the working storage database 100 from a PC via a network to view digital drawings and add / modify drawing data. Tolerate.
Since this working storage database 100 is premised on frequent use in daily work, the drawing management apparatus 300 can be accessed if it can be authenticated by receiving an input of an ID and a password, for example. ing.
This access is also possible from a PC (including a tablet terminal) or a mobile phone equipped with a display screen. Further, it may be accessed directly at the place where the drawing management apparatus 300 is installed.

After that, when the construction of the building is completed and completed, the drawing management apparatus 300 moves the drawing data stored in the working storage area database 100 to the storage area database 200. In addition, the drawing data in the working storage database 100 is deleted. At this time, a certified time stamp or a long-term signature format conforming to the JIS standard is given to ensure the evidence of the digital drawing moved to the storage storage database 200.
The digital drawings transferred to the storage database 200 are strictly managed and stored as company assets.

The digital drawings (construction drawings) stored in the working storage area database 100 are those that are actually being constructed, and are therefore relatively small, but are stored in the storage area database 200. The amount of digital drawings can be enormous, depending on the history of the company.
For designers and construction personnel, there is a demand to make use of daily work by referring to the digital drawings stored in the storage database 200, and the company also contributes to the efficiency of the work. It can be said that it is desirable to use the drawing data of the digital drawing effectively.
Therefore, the drawing management apparatus 300 allows the drawing user to access the storage storage database 200 from the PC via the network. Then, the drawing management apparatus 300 designates the digital drawing (for example, inputs a drawing number) in order to view or reuse the drawing data of the digital drawing stored in the storage storage database 200, or by searching. I am looking for it.

However, since the digital drawing stored in the storage database 200 is positioned as an important asset of the company, it must be prevented from being easily stolen.
Therefore, in this drawing management apparatus 300, the display of the digital data of the digital drawing is not displayed at a resolution equivalent to that of the paper drawing on the PC screen used by the drawing user, but is a resolution that can be determined as a drawing. To display. For example, what is normally displayed at about 600 dpi is displayed at 100 dpi.
By displaying in this way, the drawing management apparatus 300 allows browsing and searching for drawing data, but prevents reuse as it is as drawing data of a digital drawing.

Next, a procedure for allowing the drawing management apparatus 300 to reuse the drawing data of the digital drawing stored in the storage area database 200 will be described.
The drawing management apparatus 300 receives a drawing data reuse permission application from the drawing user's PC via the network. At this time, for example, the management number of the digital drawing determined by the search is simultaneously received.
The drawing management apparatus 300 stores in advance a criterion for permitting reuse for each digital drawing in the determination criterion database 80. Then, the drawing management apparatus 300 determines whether or not the received reuse application meets the criteria.
In this reuse application, the drawing management apparatus 300 requests disclosure of matters that serve as criteria for determination. Specifically, it includes matters such as the title of the applicant, the department to which the applicant belongs, the approval of the supervisor, and whether or not the author of the drawing data.
A predetermined form may be prepared and an application may be made based on this.

As a result of the determination, when the drawing management apparatus 300 determines that the digital drawing can be reused, the drawing management apparatus 300 transfers the drawing data of the digital drawing from the storage storage database 200 to the working storage database 100 and the original (storage storage database 200 is copied with a drawing management number different from the digital time stamp (200) with a certified time stamp or a long-term signature format conforming to the JIS standard.
At this time, the drawing management apparatus 300 preserves the original as it is and prevents any processing or correction from being performed. Therefore, there is no possibility that the originality of the digital drawing stored for a long time is impaired.

Here, in the drawing management apparatus 300, as described above, a drawing user, for example, a designer or a construction person, frequently accesses the working storage database 100 from a PC via a network and browses a digital drawing. It is acceptable to add or modify drawing data.
After that, when the work is completed, the drawing management apparatus 300 moves the digital drawing including the drawing data added / corrected by the drawing user to the storage storage database 200 and adds it to the target for long-term storage, like the original. On the other hand, the drawing management apparatus 300 deletes the drawing data in the working storage area database 100.

Next, the configuration of the drawing management apparatus 300 according to the present embodiment will be described with reference to FIG.
FIG. 2 is a block diagram showing the configuration of the drawing management apparatus 300 used in the present embodiment.
The drawing management apparatus 300 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 22, a RAM (Random Access Memory) 23, a communication device 24, an input device 25, and a storage device 50. Yes.
The CPU 21 centrally controls each unit of the drawing management apparatus 300 by executing information processing according to various programs.
The ROM 22 is a read-only memory that stores a basic program and parameters for operating the drawing management apparatus 300.
The RAM 23 is a readable / writable memory that provides a working memory when the CPU 21 performs a drawing management process or the like.

The communication device 24 is a connection interface for connecting the drawing management device 300 to a network such as the Internet. The drawing management apparatus 300 transmits drawing data to the drawing user's PC via the communication device 24 and receives a drawing data reuse application.
The input device 25 includes input devices such as a keyboard and a mouse, and accepts an operation from the user. The user can also search for drawing data of a digital drawing, for example, using the input device 25 in the drawing management apparatus 300.

The storage device 50 is a large-capacity storage medium such as a hard disk.
The storage device 50 stores a drawing management program 60, a judgment reference database 80, a working storage area database 100, and a storage area database 200.
When the CPU 21 executes the drawing management program stored in the storage device 50, the processing described above is performed.
The drawing management program 60 includes a working storage area database management program 61, a storage storage area management program 62, a judgment management program 63, a long-term signature management program 64, and the like.

The working storage area database management program 61 manages processing in the working storage area database 100, and the storage area management program 62 is a program for managing processing in the storage area database 200.
In addition, the judgment management program 63 stores in the judgment reference database 80 whether or not to access the working storage database 100, browse and search drawing data etc. stored in the storage storage database 200, and apply for reuse of drawing data. It is a program for making a judgment based on a held standard.
The long-term signature management program 64 is a program for managing a long-term signature of a digital drawing stored in the storage storage database 200.

The determination criteria database 80 holds in advance criteria for determining the suitability of access to the working storage database 100, browsing, searching for drawing data, etc. stored in the storage storage database 200, and re-use of drawing data. Database. The CPU 21 executes the judgment management program 63 so as to make a judgment according to the judgment standard of the judgment standard database 80.
As described above, the work storage area database 100 stores various types of drawing data that are currently used in progress work, for example, construction work and civil engineering work.
On the other hand, the storage storage database 200 is a database that stores digital drawings that have been completed as company assets, and therefore, measures that strictly manage access and guarantee the evidence of digital drawings, such as certified time stamps. Giving and so on. This point will be described later.

As an example of saving a digital drawing in the save storage database 200, a case will be described in which a digital drawing for browsing and searching corresponding to the digital drawing is prepared separately from the saved digital drawing.
FIG. 3 is a diagram showing an example of a digital drawing 500 for browsing and searching stored in the storage storage database 200.
The digital drawing 500 for browsing and searching stored in the storage storage database 200 is composed of certain bibliographic items (attached information) as text data and drawing data with reduced resolution.

These are acquired by the drawing management apparatus 300 extracting the drawing data stored in the working storage area database 100 from the saved digital drawing when moving to the saving storage area database 200. Then, the drawing management apparatus 300 creates a digital drawing for browsing and searching from the acquired bibliographic items (attached information) and drawing data.
This processing is performed by the CPU 21 executing the storage database management program 62.
At this time, when the reuse of the drawing data is permitted later, the copying drawing data may be created and held in advance for copying.

  In the example of FIG. 3, the attached information includes “drawing management number”, “drawing creator”, “drawing creation year, month, date, hour”, “drawing revision name”, “drawing revision management number”, “ `` Modified creation year, month, day, hour '', `` Long-term signature stamp stamper name '', `` Seal creation year, month, day, hour '', `` Long-term storage person name '', `` Long-term storage year, month, day, "Hour", "file name", "project name", "arbitrary character string automatically acquired from CAD data", and the like.

Further, “characteristics of the building”, for example, “three-story wooden building”, “house built on a narrow site”, “housing where the store and the housing unit are integrated”, and the like.
Furthermore, “the location of the building and its characteristics”, for example, “close to the coast”, “close to the cliff”, “soft ground”, and the like.
In addition to this, it holds “special notes on drawing management”.
Other than this, for example, “construction company”, “complaints received from the owner”, “damage information caused by earthquakes, storms and floods”, and the like may be attached information.
The bibliographic items of the digital drawing 500 for browsing and searching may be set to be able to be added or modified later.
Note that when “special remarks regarding drawing management” is set to “confidential”, the drawing management apparatus 300 rejects at least the disclosure through the network including digital data with a reduced resolution. May be. In this case, it is possible to make the contents viewable by an operation of a person having management authority through in-house approval or the like instead of processing via the network.

The drawing data described in the digital drawing 500 for browsing and searching is raster format data with reduced resolution. The reason why the resolution is lowered is that, as described above, it can be determined as drawing data for retrieval but cannot be reused as drawing data.
The raster format data is used in the case of a design drawing because the raster format data is difficult to reuse.
The drawing user accesses the drawing management apparatus 300 via the network, and searches for a digital drawing to be browsed using such attached information as a search key.

Here, even if the drawing data of the digital drawings (including the digital drawings for browsing and searching described above) stored in the storage storage database 200 is composed of vector format data, the raster format (bitmap format) It may consist of the following data.
Here, the vector format data is a method of managing numerically all drawing (graphic) data to be processed in the computer. In this vector method, a drawing (figure) is held as coordinate data such as each vertex, and is expressed by performing arithmetic processing on information of a line that becomes a contour every time it is displayed. Therefore, if the size of the drawing (figure) is changed or modified, the drawing (figure) corresponding to the size can be displayed. Therefore, it is a square suitable for a design drawing or the like that undergoes many corrections and deformations.
On the other hand, raster format data is a method of configuring an image with a bitmap. This raster format data has a characteristic that it depends on the resolution because it simply holds dot arrangement and color (including shading) information as data.

Further, when drawing data to be saved is composed of vector format data, it may be converted into raster format data and saved, and in the case of raster format data, it may be saved as it is.
At this time, when the drawing data of the digital drawing with a reduced resolution is disclosed, all the data is disclosed in raster format. As described above, with regard to architectural drawing data, raster format data is difficult to reuse. Thus, a certain effect can be expected to prevent unauthorized acquisition of drawing data of digital drawings.

Next, whether or not the drawing data of the digital drawing stored in the storage database 200 performed by the drawing management apparatus 300 can be reused will be described.
What kind of object is allowed to reuse the digital data in the digital drawing is a matter that should be determined in advance as a clear standard based on the security policy of the company. Based on the determined criteria, the drawing management apparatus 300 determines whether or not reuse is possible.
In the present embodiment, this criterion is stored in advance in the criterion database 80.

This standard includes a standard for drawing users, that is, "people", and a standard for "content" of drawing data of digital drawings.
Here, the criteria for “people” are, for example, that employees can be classified according to criteria such as “general employees”, “managers”, and “managers (executives)”. It is a standard.
There is also a method of setting a standard for each department. For those who belong to the same department as the creator of the drawing, the standards can be relaxed, and in the case of the creator, it can be reused unconditionally.
Specifically, the digital drawings are ranked as A, B, and C. A rank is only “manager (officer)”, B rank is “manager” and “manager (officer)”, and C rank is All employees including “general employees” can be reused.
As an exception, a person in the same department as the creator of the digital drawing can be reused up to rank A for “managers” and rank B for “general employees”.
Further, if the creator of the digital drawing is himself, all ranks can be reused.

Next, the content standard corresponds to the ranking of A, B, and C described above. The number of ranks is not limited to three ranks, but should be determined as appropriate according to the convenience of each company.
Here, rank A corresponds to highly confidential embassies, police-related facilities, bank-related buildings, and the like. The rank B is a normal office building, a private house, and the rank C is, for example, a design drawing of a widely used park.
Factors that can serve as standards for the contents include the creation date of digital drawing data, the type of building, the location of the building, and the like.

This ranking must be determined when the digital drawing is stored in the storage area database 200. This determination is usually made by setting of an authorized person.
This criterion may be disclosed to employees in advance.
Further, the standard for reusing the digital drawing may be disclosed together with the bibliographic items shown in FIG. By doing so, the person who applies for reuse can determine in advance whether or not it is possible. If it becomes impossible to reuse, it is possible to apply for reuse through the supervisor in advance.
In this ranking, when re-use is permitted, it is possible to further require that the person who has the authority to decide is further authorized.

Next, proof of proof when the digital drawing is stored in the storage database 200 will be described.
Saving a digital drawing in the storage database 200 means that the digital drawing is stored as a company asset for a long period of time. At this time, how to prevent tampering of the digital drawing is a problem related to the importance of the digital drawing and the security policy of the company.
First, as a general method, access to the storage area database 200 is strictly managed.

As another method, there is a method using an “electronic signature”. This “electronic signature” is, for example, a signature that proves the creator of a document (digital drawing) by a public key cryptosystem and guarantees that the document (digital drawing) has not been tampered with.
Furthermore, there is a method using “long-term signature” as a strict method. This “long-term signature” is a system for guaranteeing the originality of a digitally signed document (digital drawing) over a long period of time. Although it is possible to prove the authenticity and non-falsification of the creator by using “electronic signature” and “certified time stamp”, the “long-term signature” system can be used to verify the authenticity of the electronic signature. By extending the nature, the originality of electronic documents (digital drawings) can be maintained in the future.
In order to realize this “long-term signature”, it is necessary to access an external “time stamp server” via the communication device 24 and periodically acquire the “time stamp”.
In the present embodiment, the long-term signature is obtained by the CPU 21 executing the long-term signature management program 64.

Next, the processing procedure of this embodiment will be described with reference to the flowcharts of FIGS. 4 and 5. The following processing is realized by the CPU 21 executing the drawing management program 60 stored in the storage device 60.
FIG. 4 is a flowchart showing a processing procedure until the digital drawing is stored in the storage area database 200 of the present embodiment.
First, when receiving an application for access to the working storage database 100 from a drawing user (hereinafter referred to as a user) PC (step 10), the CPU 21 permits from the user designation information (user ID and password) received at the same time. Make a non-permission decision. If there is no problem with the user ID or password, the CPU 21 transmits a permission notice to the user's PC via the network, and if there is a problem, sends a notice of disapproval (step 11).
In the case of permission, the CPU 121 makes the working storage area database 200 accessible to the user (step 12).

Then, the CPU 21 accepts access to the working storage database 100 from the user's PC (step 13) and accepts the acquisition of drawing data (step 14).
Then, the user corrects and adds the drawing data in the daily work, and at the end of the daily work, the CPU 21 stores and saves the added and corrected drawing data in the work storage area 100 (step). 15).
Usually, such a series of work is continued every day, for example, half a year or one year until the construction work is completed.
When the work is finally finished (ie, the building is completed) (step 16; Y), the CPU 21 receives the final drawing data in the work storage area 100 (step 17) and works from the user's PC. Is received (step 18).

Here, the CPU 21 moves the final drawing data stored and saved in the working storage area database 100 to the saving storage area database 200 and stores the final drawing data stored and saved in the working storage area database 100. Data is erased (step 19).
Here, the CPU 21 may perform long-term signature assignment processing on the final drawing data saved in the saved storage area database 200.
In addition, a digital drawing 500 for browsing and searching created with the bibliographic items described in this embodiment and raster format data with reduced resolution may be created.
At this time, when the reuse of the drawing data is permitted later, the copying drawing data may be created and held in advance for copying.

FIG. 5 is a flowchart illustrating a procedure for reusing a digital drawing stored in the storage storage database 200.
First, when the CPU 21 accepts an application for accessing the storage storage database 200 from the user's PC to browse and search (step 30), at the same time, the CPU 21 accepts or rejects permission from the received user designation information (user ID or password). Make a permission decision. However, since this process accesses the storage database 200, more strict authentication may be requested. Specifically, it may be required to obtain the consent of the supervisor in advance, or more severe personal authentication may be performed.
As a result, the CPU 21 transmits a permission to the user's PC if the requirement is satisfied, and a non-permission notification to the user's PC if the requirement is not satisfied (step 31). Then, in the case of permission, the CPU 21 makes the saved storage area database 200 in a state where it can be browsed and searched (step 32).

Then, the CPU 21 accepts access from the user, and permits browsing and searching of digital drawings in the storage area database 200. Note that, as described above, the subject of browsing and searching is not the digital drawing itself stored in the storage database 200 but the bibliographic items created for browsing and searching. And a digital drawing 500 for browsing and searching consisting of drawing data created with raster format data with reduced resolution.
Therefore, the original digital drawing stored in the storage storage database 200 is not subject to browsing or searching.

It is assumed that the user browses and searches, and as a result, specifies drawing data to be reused. Here, the CPU 21 receives a drawing data reuse application from the user's PC (step 34). This reuse application requires disclosure of matters necessary for determining whether or not reuse is possible. Specifically, the management number of the digital drawing, the person's title, the department to which he belongs, and in some cases, the approval of the supervisor.
When receiving this reuse application, the CPU 21 executes the judgment management program 63 and makes a judgment according to the criteria held in the judgment criteria database 80. Then, the result “permitted” or “not permitted” is notified to the user's PC (step 35).

If the determination is “permitted”, the CPU 21 creates a copy of the drawing data stored in the storage database 200 and moves it to the working storage database 100 (step 36). Here, the copy of the drawing data may be copy data prepared in advance for copying instead of the original data stored in the storage database 200.
Then, the CPU 21 assigns a drawing management number separate from the original to the copied drawing data, and thereafter manages it as a digital drawing separate from the original.
The CPU 121 makes the working storage database 200 accessible to the user.

Then, the CPU 21 makes it possible to accept access to the work storage database 100 from the user's PC (step 37), and accepts access to the work area database 100 from the user's PC (step 38).
The subsequent processing is the same as the processing from step 14 to step 19 in FIG. 4 (step 39 to step 44).
When the CPU 21 finally moves the final drawing data stored and saved in the working storage area database 100 to the saving storage area database 200, a separate digital management number is used with a drawing management number different from the original. Saved as a drawing.

  In the above-described embodiment, description has been made centering on architectural design drawings, but the present invention is not limited to this. For example, the present invention can be applied to management of digital drawings of industrial products.

In the above embodiment, as shown in FIG. 2, the working storage area database 100 and the storage area database 200 have been described as being installed in the same apparatus, but the present invention is limited to this. There is no need.
If connected via a network, for example, the working storage database 100 may exist as a separate device as a working storage server. Further, the storage storage database 200 may exist as a separate device as a storage storage server.
Further, the functions of the working storage area database 100 and the storage area database 200 may be realized by a single server. In this case, the drawing management apparatus and this server realize a drawing management system corresponding to the present invention.
Furthermore, a drawing management system corresponding to the present invention may be realized by connecting a drawing management device, a working storage area server, and a storage storage area server via a network.

21 CPU
22 ROM
23 RAM
24 Communication Device 25 Input Device 50 Storage Device 60 Drawing Management Program 80 Judgment Reference Database 100 Working Storage Database 200 Saved Storage Database 300 Drawing Management Device 500 Digital Drawing for Browsing and Searching

Claims (6)

A drawing management apparatus comprising a first data storage means accessible from a user via a network and functioning as a working storage area, and a second data storage means for storing a digital drawing,
Drawing data moving means for moving the drawing data of the digital drawing from the first data storing means to the second data storing means and storing it as an original;
A browsing request receiving unit that receives a browsing request for drawing data of a digital drawing that has been moved by the drawing data moving unit and stored as an original in the second storage unit;
Disclosure means for lowering the resolution of the drawing data of the digital drawing subject to the browsing request when the browsing request is received by the browsing request receiving means;
Re-use request receiving means for receiving a re-use request for drawing data of the digital drawing disclosed in the disclosing means;
A reuse request determining means for determining whether or not the reuse request received by the reuse request receiving means is based on a predetermined determination criterion;
When the reuse request judging means judges that reuse is possible, the copy of the original drawing data of the digital drawing is transferred from the second data storage means to the first data storage means. Drawing data attaching means for reusability;
A drawing management apparatus comprising:
2. The drawing data assigning means assigns a drawing management number different from the original when transferring a copy of the original from the second data storage means to the first data storage means. Drawing management device.
3. The original data moved to the second data storage means is drawing data of a digital drawing stored with a certified time stamp or a long-term signature format conforming to JIS standard. Description drawing management device.
When the drawing data moving means moves and saves the drawing data of the digital drawing to the second data storage means, obtains one or more attribute information from the digital drawing and browses the drawing data with a reduced resolution; It further comprises browsing for creating drawing data for searching, and digital drawing creating means for searching,
When the disclosure means accepts a browsing request and discloses the drawing data with a reduced resolution, the digital drawing for browsing and searching created by the digital drawing creating means for browsing and searching is disclosed. The drawing management apparatus according to claim 1.
In a drawing management apparatus comprising a first data storage means accessible from a user via a network and functioning as a working storage area, and a second data storage means for storing a digital drawing,
A drawing data moving step of moving the drawing data of the digital drawing from the first data storing means to the second data storing means and storing it as an original;
A browsing request receiving step that receives a browsing request for drawing data of a digital drawing that has been moved by the drawing data moving step and stored as an original in the second storage means;
A disclosure step of lowering the resolution of the drawing data of the digital drawing that is the object of the browsing request when the browsing request is received in the browsing request receiving step;
A reuse request receiving step for receiving a request for reusing the drawing data of the digital drawing disclosed in the disclosure step;
A reuse request determination step for determining whether or not the reuse request received in the reuse request reception step is based on a predetermined determination criterion;
If it is determined in the reuse request determination step that reuse is possible, a copy of the original drawing data of the digital drawing is transferred from the second data storage means to the first data storage means. A step of assigning drawing data to be reusable;
A drawing management method comprising:
In a drawing management apparatus comprising a first data storage means accessible from a user via a network and functioning as a working storage area, and a second data storage means for storing a digital drawing,
A drawing data moving function for moving the drawing data of the digital drawing from the first data storing means to the second data storing means and storing it as an original;
A browsing request receiving function that receives a browsing request for drawing data of a digital drawing that has been moved by the drawing data moving function and stored as an original in the second storage means;
A disclosure function for lowering the resolution of the drawing data of the digital drawing that is the object of the browsing request when the browsing request is received by the browsing request receiving function;
A reuse request receiving function for receiving a request to reuse drawing data of a digital drawing disclosed in the disclosure function;
A reuse request determination function for determining whether or not the reuse request received by the reuse request reception function is based on a predetermined determination criterion;
If the reuse request determination function determines that reuse is possible, a copy of the original drawing data of the digital drawing is transferred from the second data storage means to the first data storage means. A drawing data assigning function that can be reused;
A drawing management program that enables a computer to realize

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