JP2007114619A - Copying control device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrict the copying of an original by a copying device when a change is made in the original being a copying object. <P>SOLUTION: When forming an original for copying obtained by adding a bar code showing an original ID to an original, the copying control device 2 calculates a hash value from image data of the original for copying and data on a copying permission condition being a condition that copying the original for copying is permitted, and records the hash value and the copying permission condition on a copying condition DB 21 by relating them to the original ID. When copying the original is started in the copying device 5, the copying control device 2 reads out the copying permission condition and the hash value from the copying condition DB 21 based on the original ID read from the bar code of the copying object original. Then, it calculates the hash value again from the image data of the copying object original and the copying permission condition read out, and compares the hash value calculated again with the hash value read out so as to detect the change of the original. When the change is made in the original, copying is inhibited as unauthorized copying. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to information security technology, and more particularly, to a copy management device for preventing information leakage due to unauthorized copying.

  In order to prevent or suppress information from being illegally leaked due to unauthorized copying, the manufacturer of the copying machine reads an IC card or the like that stores user identification information at the time of copying, and logs who made how many copies. We are commercializing copiers with a mechanism to leave them.

  In addition to this, in order to prevent unauthorized copying, the copying machine determines whether or not a predetermined display indicating permission or prohibition of copying exists on the manuscript, and makes a copy depending on the presence or absence of the display. Some are limited (see, for example, Patent Documents 1, 2, and 3).

  Furthermore, in the copying machine, it is requested to input identification information (ID) of the user at the time of copying, and it is determined whether or not the user has the qualification to copy, and if the qualification is determined, the copying is permitted. (For example, see Patent Documents 4, 5, and 6)

Further, in order to determine whether or not to restrict copying, a request for input of encryption is made at the time of copying (for example, refer to Patent Document 7), or a request for input of identification information (ID) of a distribution destination of a copy. (See, for example, Patent Document 8).
In some cases, the number of copies of a manuscript that can be copied is managed to limit copying (for example, see Patent Document 9).

  Furthermore, a management apparatus connected to the copying machine via a network stores a recording prohibition target image such as a banknote and compares the recording prohibition target image with an image of a document to be copied, thereby making a copy. Some are limited (see, for example, Patent Document 10).

In addition, when the printer is connected to the server storing the print content data via the Internet, when the paper is set in the printer, the server determines whether the set paper is in a predetermined format. However, in some cases, printing data is transmitted to a printer in a predetermined format, and the printing content received by the printer is printed on paper so that printing is restricted (for example, see Patent Document 11). ).
JP-A-4-343570 JP-A-8-65438 JP-A-10-164296 JP-A-5-316373 JP-A-6-70150 Japanese Patent Laid-Open No. 7-115537 Japanese Patent Laid-Open No. 3-120561 JP 7-49645 A JP 2004-216863 A JP-A-7-131638 JP 2001-297162 A

  According to these technologies, in order to prevent unauthorized copying, for example, a predetermined display indicating whether copying is permitted or prohibited is printed in advance on a document to be copied, and then the display is read during copying. A copy is executed when a display permitting copying is read, and a copy is not executed when a display prohibiting copying is read.

  However, in order to prevent unauthorized copying by such a method, for example, when a document is falsified and the display indicating that copying is prohibited is illegally changed to a display indicating that copying is permitted. Unauthorized copying is not possible and unauthorized information leakage cannot be prevented.

  The present invention has been made in view of the above circumstances, and provides a copy management apparatus and the like capable of restricting copying of a document by a copying apparatus when a document to be copied is changed. With the goal.

In order to achieve the above object, a copy management apparatus according to the first aspect of the present invention provides:
A copy original image acquisition means for acquiring image data of a copy original to which original identification information for identifying the original is added;
Copy condition acquisition means for acquiring copy condition information which is a condition for determining whether or not to permit copying of the copy original in the copying apparatus;
A copy document hash value calculation unit that calculates a hash value using a predetermined hash function based on the image data acquired by the copy document image acquisition unit and the copy condition information acquired by the copy condition acquisition unit;
Information storage means for storing the hash value calculated by the copy original hash value calculation means and the copy condition information acquired by the copy condition acquisition means in association with the original identification information;
A copy target document image acquisition means for acquiring image data of a copy target document that is a copy target document when the copy document is copied in the copying apparatus;
Copy condition reading means for reading copy condition information stored in association with the document identification information added to the copy target document from the information storage unit;
A copy target document hash value calculating unit that calculates a hash value using the predetermined hash function based on the image data acquired by the copy target document image acquiring unit and the copy condition information read by the copy condition reading unit; ,
A hash value reading means for reading out a hash value stored in association with the document identification information added to the copy target document from the information storage unit;
A hash value determining means for determining whether or not the hash value calculated by the copy target document hash value calculating means and the hash value read by the hash value reading means match;
Copy condition determining means for determining whether or not the copy of the copy target document in the copying apparatus satisfies the copy condition information read by the copy condition reading means;
A signal for permitting copying of the original to be copied in the copying apparatus when the hash value determining means determines that the hash values match and the copy condition determining means determines that the copy condition information is satisfied. And when the hash value discriminating unit discriminates that the hash values do not match, or when the copying condition discriminating unit discriminates that the copy condition information is not satisfied, the copy target document in the copying apparatus Control signal output means for outputting a signal for prohibiting copying of
Is provided.

The copy original image acquisition means includes:
Document image acquisition means for acquiring image data of a document;
Identification information generating means for generating document identification information for identifying the document;
Barcode image creation means for creating barcode image data having document identification information generated by the identification information generation means;
Image synthesizing means for synthesizing the barcode image data created by the bar code image creating means with the image data of the original obtained by the original image obtaining means to obtain image data of the original for copying. ,
The information storage means stores the hash value calculated by the copy original hash value calculation means and the copy condition information acquired by the copy condition acquisition means in association with the original identification information generated by the identification information generation means. And
The copy target document image acquisition unit acquires image data of a copy target document on which a barcode is printed by printing image data of a copy document acquired by the image composition unit;
The copy condition reading unit acquires document identification information from a barcode printed on the document to be copied, and reads copy condition information stored in association with the acquired document identification information from the information storage unit. ,
The hash value reading unit acquires document identification information from a barcode printed on the copy target document, and reads a hash value stored in association with the acquired document identification information from the information storage unit.
You may do it.

A program according to the second aspect of the present invention is:
Computer
Copy document image acquisition means for acquiring image data of a copy document to which document identification information for identifying the document is added;
Copy condition acquisition means for acquiring copy condition information which is a condition for determining whether or not to permit copying of the original for copying in a copying apparatus;
A copy document hash value calculation unit that calculates a hash value using a predetermined hash function based on the image data acquired by the copy document image acquisition unit and the copy condition information acquired by the copy condition acquisition unit;
Information recording means for recording the hash value calculated by the copy original hash value calculation means and the copy condition information acquired by the copy condition acquisition means in association with the original identification information in a storage unit;
A copy target document image acquisition means for acquiring image data of a copy target document that is a copy target document when copying of the copy document is performed in the copying apparatus;
Copy condition reading means for reading copy condition information recorded in association with document identification information added to the copy target document from the storage unit;
A copy target document hash value calculating unit that calculates a hash value using the predetermined hash function based on the image data acquired by the copy target document image acquiring unit and the copy condition information read by the copy condition reading unit;
A hash value reading means for reading out a hash value recorded in association with the document identification information added to the copy target document from the storage unit;
A hash value determining means for determining whether or not the hash value calculated by the copy target document hash value calculating means and the hash value read by the hash value reading means match;
Copy condition discriminating means for discriminating whether or not copying of the original to be copied in the copying apparatus satisfies the copy condition information read by the copy condition reading means;
A signal for permitting copying of the original to be copied in the copying apparatus when the hash value determining means determines that the hash values match and the copy condition determining means determines that the copy condition information is satisfied. And when the hash value discriminating unit discriminates that the hash values do not match, or when the copying condition discriminating unit discriminates that the copy condition information is not satisfied, the copy target document in the copying apparatus Control signal output means for outputting a signal for prohibiting copying
To function as.

A copy management apparatus according to the third aspect of the present invention is:
Image information storage means for storing image information of a copy original in association with the original identification information when a copy original to which original identification information is added is created;
When copying a copy document in the copying apparatus, the image information storage means is associated with image information of the copy target document which is a copy document to be copied and document identification information added to the copy target document. Change determining means for determining whether or not the copy document has been changed based on the image information stored in
A signal output means for outputting a signal for prohibiting copying of the copy target original in the copying apparatus when the change determining means determines that the copy original has been changed;
Is provided.

The image information is a hash value calculated from image data,
The image information storage means includes
A copy original image acquisition means for acquiring image data of the copy original;
A copy original hash value calculation means for calculating a hash value by applying a predetermined hash function to the image data acquired by the copy original image acquisition means;
Hash value storage means for storing the hash value calculated by the copy original hash value calculation means in association with the original identification information;
The change determining means includes
Copy target document image acquisition means for acquiring image data of the copy target document;
A copy target document hash value calculation unit that calculates a hash value by applying the predetermined hash function to the image data acquired by the copy target document image acquisition unit;
Based on the hash value calculated by the copy target document hash value calculation unit and the hash value stored in the hash value storage unit in association with the document identification information added to the copy target document Hash value determination means for determining whether or not the document has been changed,
You may do it.

  According to the present invention, when a document to be copied is changed, copying of the document by the copying apparatus can be restricted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration example of a copy management system according to the present embodiment.
As shown in the figure, the copy management system according to the present embodiment includes a copy original creation application device 1, a copy management device 2, a log storage device 3, a printing device 4, and a copy device 5, Each is connected to each other via a communication network 6. The copy management apparatus 2 includes a copy condition database (DB) 21, and the log storage apparatus 3 includes a log database (DB) 31.

  The copy manuscript creation application device 1 is a device for a user to apply for the creation of a copy manuscript that is a manuscript having a function to prevent unauthorized copying.

The copy management apparatus 2 is an apparatus that manages the copy apparatus 5 so that unauthorized copying of an original is not performed.
For this purpose, the copy management apparatus 2 first creates image data (copy original image) of the copy original in order to print the copy original with the printing apparatus 4 based on the application from the copy original creation application apparatus 1. At the same time, information necessary for determination to prevent unauthorized copying is recorded in the copy condition database 21.
Furthermore, the copy management device 2 determines whether or not the illegal copy is made based on the information recorded in the copy condition database 21 when the created copy original is copied by the copy device 5. Performs processing to prevent copying.

  The log storage device 3 is a device that includes a log database 31 for recording the printing status of the printing device 4 and the copying status of the copying device 5 for each copy original. In addition, when a copy original image is created by the copy management apparatus 2, the log storage device 3 also records the copy original image in the log database 31.

  The printing device 4 is a device that prints a copy original image created by the copy management device 2 and recorded in the log storage device 3 based on an application from the copy original creation application device 1 to create a copy original. It is.

  The copying apparatus 5 is an apparatus for copying a copy original created by the printing apparatus 4. Further, the copying apparatus 5 performs a copying operation based on the determination result of whether or not the copying management apparatus 2 is unauthorized copying.

The copy management system configured as described above is roughly divided into two operations: a copy original creation operation and a copy operation.
The copy management device 2 functions as a copy manuscript creation device during a copy manuscript creation operation, and functions as a copy permission / inhibition judgment device during a copy operation.

When creating a copy manuscript, first, in the copy manuscript preparation application device 1, the applicant is permitted to copy a manuscript (printed material) that he / she wants to prevent unauthorized copying and a condition that the copying of the manuscript is not illegal. Condition.
As copy permission conditions, copy qualified person information indicating who can copy the document, copyable sheet number information indicating the number of copies of the document, and valid copy period information indicating the period during which the document can be copied are instructed. Note that the copying permission condition is not limited to this, and other conditions may be designated.

The copy management device 2 generates document identification information for identifying a document based on an instruction from the copy creation application device 1, and records a copy permission condition in the copy condition database 21 in association with the generated document identification information. In addition, a copy original image is created by adding a barcode or the like indicating the generated original identification information to the original.
Furthermore, the copy management device 2 uses the created copy original image as hash information or the like as unmatch prevention information in the original identification information in order to prevent the copy of the copy object that has been changed by falsification or the like as an unauthorized copy. It is associated and registered in the copy condition database 21.

  The log storage device 3 records the copy original image created by the copy management device 2 in the log database 31, and the printing device 4 prints the copy original image recorded in the log database 31 of the log storage device 3. Create a copy manuscript. Furthermore, the log storage device 3 leaves a log of the printing status in the printing device 4 in the log database 31.

  In copying the original for copying, in the copying apparatus 5, for example, the user inserts a user card (ID card) such as an IC card for storing a user ID as identification information of the user, When an attempt is made to copy a copy original, which is a printed matter on which original identification information such as a code is printed, the copying apparatus 5 reads the copy original to be copied and the user ID, and copies it via the communication network 6. The management apparatus 2 is inquired of whether or not copying is possible.

The copy management apparatus 2 reads the document identification information from the copy document to be copied and associates the read document identification information with the copy permission database which is judgment information for preventing unauthorized copying recorded in the copy condition database 21. Reads conditions, unmatch prevention information, etc. Based on these pieces of information, it is determined whether or not copying is possible. That is, the copy condition database 21 is searched using the document identification information as a key, and information necessary for determining whether or not copying is possible is determined.
Further, when the copy management apparatus 2 determines that copying is not permitted, the copying management apparatus 2 notifies the copying apparatus 5 of information indicating that copying is prohibited, and prohibits copying in the copying apparatus 5 itself.

  In this copying permission / inhibition judgment, the user ID read by the copying machine 5 is checked against the copy qualified person information in the copy permission condition, and if the result of the check is that the user does not have the copy qualification, the copy is made as an illegal copy. Is prohibited. Whether or not the copyable number of copy permission conditions is satisfied is determined from the past cumulative number of copies recorded as a copy log in the log database 31 of the log storage device 3, and the cumulative number of copies is greater than or equal to the number of copies that can be made. If it is, copying is prohibited. Whether or not the copy valid period of the copy permission condition is satisfied is determined based on the date and time at the time of copying, and if it is outside the copy valid period, copying is prohibited.

Thus, by determining the copy permission conditions such as the copy valid period, it is possible to manage the life cycle of the document.
Further, based on the unmatch prevention information, it is determined whether the copy original read by the copying apparatus 5 has been changed from the time of creation. If it has been changed, the copy is prohibited as an illegal copy.

When copying is prohibited by the copy management apparatus 2, the copying apparatus 5 does not execute copying of the read document, but performs copying when copying is permitted.
The log storage device 3 takes a copy status log such as the cumulative number of copies for copying and records it in the log database 31.

According to the present embodiment, document identification information is additionally printed on a document at the stage of creating a copy document. Then, at the copying stage, the document identification information as additional information is read, and it is determined whether or not the copy is illegal based on information stored in advance for each document identification information. To do. For this reason, copying can be managed in units of originals.
In addition, the manuscript identification information automatically associates the manuscript with the copy permission conditions and the unmatch prevention information, and automatically judges whether or not the copy is illegal. It becomes.

Next, the configuration of each device provided in the copy management system according to the present embodiment will be described.
FIG. 2 is a block diagram showing a configuration example of the copy original creation application apparatus 1 in the copy management system described above.
As shown in the figure, the copying manuscript preparation application apparatus 1 includes an input unit 11, an output unit 12, a communication unit 13, a storage unit 14, and a control unit 15, and these units are mutually connected via a bus 16. It is connected.

  The input unit 11 is used by a person who applies for the creation of a copy manuscript (applicant) to input information necessary for creating a copy manuscript, information for operating the copy manuscript creation application apparatus 1, and the like. An image scanner, a keyboard, a mouse, a card reader, and the like.

Specifically, for example, the applicant sets an original to be prevented from unauthorized copying in an image scanner (not shown) as the input unit 11, converts it into image data, and inputs the original image data. .
Further, the applicant uses a keyboard (not shown) or a mouse (not shown) as the input unit 11 to identify the copy qualified person ID, which is the copy qualified person identification information, the number of copies, the copy valid period, etc. Enter the copy permission conditions.

  In addition, the applicant causes a card reader (not shown) as the input unit 11 to read the ID card that stores the identification information of the applicant, and inputs the applicant ID that is the identification information of the applicant. The applicant ID is used later for the applicant to obtain a copy document based on his application from the printing apparatus 4.

  The output unit 12 outputs various information and includes a display device such as a display. Specifically, for example, the output unit 12 displays an application screen or the like for the applicant to input information necessary for a copy manuscript creation application.

The communication unit 13 communicates with the copy management apparatus 2 via the communication network 6 and includes a communication interface and the like.
The storage unit 14 stores various information, programs, and the like, and includes an auxiliary storage device such as a hard disk.

  The control unit 15 performs arithmetic processing of data, and controls the input unit 11, the output unit 12, the communication unit 13, the storage unit 14 and the like via the bus 16, and includes a CPU (Central Processing Unit) 151, a ROM (Read Only Memory) 152, RAM (Random Access Memory) 153, and the like. Specifically, the arithmetic processing and control processing in the control unit 15 are performed by the CPU 151 executing the control program stored in the ROM 152 while temporarily storing various data using the RAM 153 as a work area. Done.

  Then, the control unit 15 controls the above units according to programs stored in the ROM 152 and the storage unit 14, whereby a copy original creation application process and the like are performed in the copy original creation application apparatus 1.

FIG. 3 is a block diagram showing a configuration example of the copy management apparatus 2 in the above-described copy management system. In addition, the same code | symbol is attached | subjected about the part which has the same function as the already demonstrated structure.
As shown in the figure, the copy management apparatus 2 includes a communication unit 22, a timer unit 23, a storage unit 24, and a control unit 25, and these units are connected to each other via a bus 26.

  The communication unit 22 communicates with the copy original creation application device 1, the log storage device 3, and the copy device 5 via the communication network 6, and includes a communication interface and the like.

  The time measuring unit 23 records the date and time, and includes a clock circuit and the like. Specifically, for example, the date and time acquired by the timing unit 23 is used to determine whether or not a copy valid period condition, which is one of copy permission conditions, is satisfied when copying a copy original. .

  The storage unit 24 stores various information, programs, and the like, and includes an auxiliary storage device such as a hard disk. The copy condition database 21 is provided in the storage unit 24.

  The control unit 25 performs calculation processing of data and controls the communication unit 22, the time measuring unit 23, the storage unit 24, and the like via the bus 26, and includes a CPU 251, a ROM 252, a RAM 253, and the like.

  Then, the control unit 25 controls the above units in accordance with the programs stored in the ROM 252 and the storage unit 24, so that the copy management device 2 can create a copy original image when creating a copy original, Processing for determining whether or not copying is possible at the time of copying a document is performed.

FIG. 4 is a block diagram showing a configuration example of the log storage device 3 in the above-described copy management system. In addition, the same code | symbol is attached | subjected about the part which has the same function as the already demonstrated structure.
As illustrated, the log storage device 3 includes a communication unit 32, a storage unit 33, and a control unit 34, and each unit is connected to each other via a bus 35.

  The communication unit 32 communicates with the copy management apparatus 2 and the printing apparatus 4 via the communication network 6 and includes a communication interface and the like.

  The storage unit 33 stores various information, programs, and the like, and includes an auxiliary storage device such as a hard disk. Further, the log database 31 is provided in the storage unit 33.

  The control unit 34 performs calculation processing of data and controls the communication unit 32, the storage unit 33, and the like via the bus 35, and includes a CPU 341, a ROM 342, a RAM 343, and the like.

  The control unit 34 controls each of the above units according to programs stored in the ROM 342 and the storage unit 33, whereby log storage processing and the like in the log storage device 3 are performed.

FIG. 5 is a block diagram illustrating a configuration example of the printing apparatus 4 in the above-described copy management system.
As illustrated, the printing apparatus 4 includes an input unit 41, a communication unit 42, a timing unit 43, a printing unit 44, a paper discharge unit 45, a storage unit 46, and a control unit 47. Are connected to each other via a bus 48.

  The input unit 41 is used to input various information such as operation information by an operator of the printing apparatus 4 and includes a card reader, operation buttons, and the like. Specifically, for example, an applicant in the copy manuscript preparation application apparatus 1 causes his / her ID card to be read by a card reader (not shown) as the input unit 41 and inputs the applicant ID.

  The communication unit 42 communicates with the log storage device 3 via the communication network 6 and includes a communication interface and the like.

  The time measuring unit 43 records the date and time, and includes a clock circuit and the like. Specifically, for example, the date and time acquired by the time counting unit 43 is used to log the date and time when the copy document is printed in the printing apparatus 4.

The printing unit 44 prints image data of a copy original received by the communication unit 42 from the log storage device 3 on paper, and includes a printing mechanism and the like.
The paper discharge unit 45 discharges the copy original printed by the printing unit 44 to the outside of the printing apparatus 4 and includes a paper discharge port.

  The storage unit 46 stores various information, programs, and the like, and includes an auxiliary storage device such as a hard disk. Specifically, for example, the storage unit 46 stores a printing apparatus ID that is information for identifying the printing apparatus 4 from other printing apparatuses.

  The control unit 47 performs calculation processing of data and controls the input unit 41, the communication unit 42, the timing unit 43, the printing unit 44, the paper discharge unit 45, the storage unit 46, and the like via the bus 48. A CPU 471, a ROM 472, a RAM 473, and the like are provided.

  Then, the control unit 47 controls the above units according to programs stored in the ROM 472 and the storage unit 46, whereby the printing process and the like in the printing apparatus 4 are performed.

FIG. 6 is a block diagram showing a configuration example of the copying apparatus 5 in the above-described copy management system.
As illustrated, the copying apparatus 5 includes an input unit 51, a communication unit 52, a document placing unit 53, a document reading unit 54, a transfer unit 55, a paper discharge unit 56, a storage unit 57, and a control. And each part is connected to each other via a bus 59.

  The input unit 51 is used to input various information such as operation information by a user of the copying apparatus 5 that performs copying, and includes a card reader, operation buttons, and the like. Specifically, for example, when copying a document, a user causes his / her ID card to be read by a card reader (not shown) as the input unit 51 and inputs the user ID.

The communication unit 52 communicates with the copy management apparatus 2 via the communication network 6 and includes a communication interface and the like.
The document placement unit 53 is for placing a document to be copied, and includes a document placement table and the like.

The document reading unit 54 reads a document set on the document placing unit 53 and converts it into image data, and includes an image scanner and the like.
The transfer unit 55 transfers the image data of the document converted by the document reading unit 54 onto a sheet, and includes a transfer mechanism and the like.

The paper discharge unit 56 discharges the paper (copy material) transferred by the transfer unit 55 to the outside of the copying apparatus 5, and includes a paper discharge port.
The storage unit 57 stores various information, programs, and the like, and includes an auxiliary storage device such as a hard disk.

  The control unit 58 performs calculation processing of data, and via the bus 59, the input unit 51, the communication unit 52, the document placement unit 53, the document reading unit 54, the transfer unit 55, the paper discharge unit 56, the storage unit 57, and the like. And includes a CPU 581, a ROM 582, a RAM 583, and the like.

  Then, the control unit 58 controls each of the above units according to programs stored in the ROM 582 and the storage unit 57, so that the copying apparatus 5 performs document copying processing according to the determination result in the copy management apparatus 2. Is called.

Next, a copy manuscript creation operation and a copy manuscript copy operation in the copy management system according to the present embodiment will be specifically described.
First, the operation for creating a copy original will be described.

FIG. 7 is a block diagram showing a functional configuration example of a copy management system related to a copy manuscript creation operation, and in particular, a functional configuration example in the copy manuscript creation application device 1, the copy management device 2, and the log storage device 3. FIG.
It should be noted that the constituent elements of the copy manuscript creation application device 1, the copy management device 2, and the log storage device 3 shown in FIG. 7 are the control units 15, 25, and 34 of the respective devices shown in FIGS. However, it can be realized by controlling each part of each device shown in FIGS.
In addition, about the part which has the same function as the already demonstrated structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

The document image input unit 101 of the copy document creation application apparatus 1 accepts input of a document image that is image data of a document that is a source of a copy document.
Specifically, for example, the manuscript image input unit 101 is realized by the input unit 11 of FIG. 2, and a person (applicant) who applies for the creation of a copy manuscript having a function to prevent unauthorized copying, An original to be prevented from being illegally copied is converted into image data using an image scanner or the like, and an original image is input.

The copy permission condition input unit 102 receives input of copy permission condition information applied to the document input to the document image input unit 101.
Specifically, for example, the copy permission condition input unit 102 is realized by the input unit 11 of FIG. 2, and the applicant receives copy permission condition information such as copy qualified person information, copyable number information, and copy valid period information. Input using a keyboard or the like.

The applicant ID input unit 103 receives an input of an applicant ID of an applicant who applies for creation of a copy manuscript.
Specifically, for example, the applicant ID input unit 103 is realized by the input unit 11 in FIG. 2, and the applicant inputs his / her ID card by reading his / her ID card with a card reader or the like.

The application information transmission unit 104 copies the document image, the copy permission condition information, and the applicant ID input to the document image input unit 101, the copy permission condition input unit 102, and the applicant ID input unit 103 as application information. It transmits to the management apparatus 2.
Specifically, for example, the application information transmission unit 104 is realized by the control unit 15 of FIG. 2 controlling the input unit 11 and the communication unit 13, and when the input unit 11 is instructed to transmit application information, Information input to the document image input unit 101, the copy permission condition input unit 102, and the applicant ID input unit 103 is received and transmitted to the copy management apparatus 2 via the communication unit 13.

  The application information receiving unit 201 of the copy management apparatus 2 receives the original image, the copy permission condition information, and the applicant ID, which are application information, from the application information transmission unit 104 of the copy original creation application apparatus 1.

When the application information receiving unit 201 receives the application information, the document ID generating unit 202 generates a document ID as document identification information.
Specifically, for example, when the application information receiving unit 201 receives the application information, the document ID generating unit 202 generates a document ID by assigning a new document ID.

The barcode image creation unit 203 creates barcode image data (barcode image) having information on the document ID based on the document ID generated by the document ID generation unit 202.
Specifically, for example, the barcode image creation unit 203 codes the document ID data to create a two-dimensional barcode.

The copy original image creating unit 204 synthesizes the barcode image created by the barcode image creating unit 203 with the original image received by the application information receiving unit 201, and image data of the copy original which is a barcode-added original. Create a (copy original image).
Thereby, it is possible to create image data of a copy original that can specify the original by the original ID.

  The hash value calculation unit 205 connects the data of the copy manuscript image created by the copy manuscript image creation unit 204 to the data of the copy permission condition information received by the application information receiving unit 201, and a predetermined hash function is connected to the connected data. Is applied to calculate a hash value.

  The copy condition table creating unit 206 copies the copy condition based on the document ID generated by the document ID generating unit 202, the hash value calculated by the hash value calculating unit 205, and the copy permission condition information received by the application information receiving unit 201. A table is created and stored in the copy condition database 21.

Here, the copy condition table created by the copy condition table creating unit 206 will be described.
FIG. 8 is a diagram showing a data configuration example of a copy condition table stored in the copy condition database 21.

As shown in the drawing, the copy condition table stores the document ID generated by the document ID generating unit 202, the hash value calculated by the hash value calculating unit 205, and the copy permission condition information received by the application information receiving unit 201. .
In other words, the copy condition table is created for each document ID, and stores, in association with the document ID, copy permission condition information regarding the document specified by the document ID and a hash value that is unmatch prevention information.

The copy condition table stores copy qualified person information, copyable sheet number information, and copy valid period information as copy permission condition information.
The copy qualified person information is information indicating a person (copy qualified person) who has a qualification to copy a document specified by the document ID with the copying apparatus 5, and is, for example, a copy qualified person ID which is identification information of the copy qualified person. Identified. The copy qualified person may be specified by name or the like.

The copyable sheet number information is information indicating the cumulative number of sheets that can be copied by the copying apparatus 5 with the document specified by the document ID.
The valid copy period information is information indicating a period during which the document specified by the document ID can be copied by the copying apparatus 5.

  Returning to FIG. 7, the copy original information transmission unit 207 receives the applicant ID received by the application information reception unit 201, the original ID generated by the original ID generation unit 202, and the copy created by the copy original image creation unit 204. The original document image is transmitted to the log storage device 3 as copy original information.

The copy document information receiving unit 301 of the log storage device 3 receives the copy document information from the copy document information transmitting unit 207 of the copy management device 2.
The log table creation unit 302 creates a log table based on the copy original information received by the copy original information reception unit 301 and stores the log table in the log database 31.

Here, the log table will be described.
FIG. 9 is a diagram illustrating a data configuration example of a log table stored in the log database 31.
A log table is created for each document ID and, as shown in the figure, in association with the document ID, a copy document image, an applicant ID, a printing date, a printing device ID, and a cumulative number of copies relating to the document specified by the document ID. Each piece of information is stored.

  Although values are recorded for all the attributes in the log table shown in FIG. 9, at the stage when the log table creation unit 302 creates the log table, the document ID received by the copy document information reception unit 301 is recorded. Only the copy original image and the applicant ID are recorded, and the printing date and the printing apparatus ID are not recorded. The cumulative number of copies is recorded as “0”. Further, the copy original image data is stored outside the log table in the log database 31, and the address information of the storage location is recorded in the log table as the copy original image information.

The printing date and time and the printing apparatus ID in the log table are information recorded when the printing apparatus 4 prints a copy original. The printing date and time is the date and time when the copy original is printed by the printing apparatus, and the printing apparatus ID is identification information of the printing apparatus on which the copying original is printed.
The cumulative number of copies is information indicating the cumulative number of copy originals copied by the copying apparatus 5, and is updated when copying is permitted during copying of the copy originals.

FIG. 10 is a block diagram showing a functional configuration example of a copy management system related to the operation of creating a copy original. In particular, FIG.
The components of the log storage device 3 and the printing device 4 shown in FIG. 10 are controlled by the control units 34 and 47 of the devices shown in FIGS. 4 and 5, respectively. This can be realized by controlling each unit.
In addition, about the part which has the same function as the already demonstrated structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

An applicant ID input unit 401 of the printing apparatus 4 receives an input of an applicant ID.
Specifically, for example, the applicant ID input unit 401 is realized by the input unit 41 of FIG. 5, and the applicant ID is input to the applicant ID input unit 103 (FIG. 7) of the copy original creation application apparatus 1. In order to obtain the copy original created by the application from the printing apparatus 4, the applicant causes his / her ID card to be read by a card reader or the like and inputs the applicant ID.

The applicant ID transmission unit 402 transmits the applicant ID input to the applicant ID input unit 401 to the log storage device 3.
The applicant ID reception unit 303 of the log storage device 3 receives the applicant ID from the applicant ID transmission unit 402 of the printing device 4.

  The copy original image reading unit 304 extracts the log table storing the applicant ID received by the applicant ID receiving unit 303 from the log database 31, and further prints the print date and time and the print from the extracted log table. A log table in which no device ID is recorded is extracted. Then, the original ID is read from the log table extracted as described above, and the copy original image is read from the log database 31 based on the address information of the copy original image.

The copy original image transmitting unit 305 transmits the copy original image read by the copy original image reading unit 304 to the printing apparatus 4 in association with the original ID.
The copy original image receiving unit 403 of the printing apparatus 4 receives the original ID and the copy original image from the copy original image transmitting unit 305 of the log storage device 3.

The copy original printing unit 404 is realized by the control unit 47 of FIG. 5 controlling the printing unit 44, and the copy original image received by the copy original image receiving unit 403 is printed on a sheet, and the copy original is printed. create.
The copy original discharge unit 405 is realized by the control unit 47 of FIG. 5 controlling the paper discharge unit 45, and discharges the copy original created by the copy original print unit 404 to the outside of the printing apparatus 4.

FIG. 11 is a diagram illustrating an example of a copy document created by the printing apparatus 4.
By using the copy management system according to the present embodiment, a copy document on which a two-dimensional barcode obtained by encoding a document ID is printed as shown in the figure is created.
Note that the copy original only needs to be printed with information indicating the original ID, and is not limited to a two-dimensional barcode, but may be a one-dimensional barcode. Further, the ID number of the document ID may be printed as text information.

Returning to FIG. 10, when the copy original printing unit 404 prints a copy original, the print log information acquisition unit 406 acquires the print date and the printing apparatus ID as print log information.
Specifically, for example, the print log information acquisition unit 406 acquires the print date and time using the time measuring unit 43 in FIG. 5 and reads and acquires the printing apparatus ID from the storage unit 46 in FIG.

The print log information transmission unit 407 transmits the print log information acquired by the print log information acquisition unit 406 and the document ID received by the copy document image reception unit 403 to the log storage device 3.
The print log information reception unit 306 of the log storage device 3 receives the print log information and the document ID from the print log information transmission unit 407 of the printing device 4.

The print log information recording unit 307 records the print log information received by the print log information receiving unit 306 in the log database 31 in association with the document ID.
Specifically, for example, the print log information recording unit 307 records the print date and time and the printing apparatus ID that are the received print log information in a log table that stores the received document ID.

  By the above-described operation for creating a copy original, a copy original that can read from the original itself an original ID for identifying a plurality of originals can be created.

Next, an operation of copying the copy original created by the above-described copy original creation operation by the copying apparatus 5 will be described.
FIG. 12 is a block diagram showing a functional configuration example of a copy management system relating to a copying operation of a copy original, and in particular, a block diagram showing a functional configuration example in the copy management device 2, the log storage device 3, and the copy device 5. is there.
The components of the copy management device 2, the log storage device 3, and the copy device 5 shown in FIG. 12 are the same as those shown in FIG. 3, FIG. 4, and FIG. This can be realized by controlling each part of each device shown in FIG. 3, FIG. 4 and FIG.
In addition, about the part which has the same function as the already demonstrated structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  A user ID input unit 501 of the copying apparatus 5 receives an input of a user ID of a person who uses the copying apparatus 5. Specifically, for example, the user ID input unit 501 is realized by the input unit 51 of FIG. 6, and the user inputs his / her ID by causing his / her ID card to be read by a card reader or the like.

The copy target document image acquisition unit 502 acquires image data (copy target document image) of a copy document (copy target document) that is a copy target in the copying apparatus 5 in accordance with a user operation.
Specifically, for example, the copy target document image acquisition unit 502 is instructed by the user to start copying in the input unit 51 in a state where the copy target document is placed on the document placement unit 53 of FIG. Then, the original reading unit 54 reads the original to be copied, thereby acquiring the original image to be copied.

  The copy target document information transmission unit 503 transmits the user ID input to the user ID input unit 501 and the copy target document image acquired by the copy target document image acquisition unit 502 to the copy management apparatus 2.

The copy target document information receiving unit 211 of the copy management apparatus 2 receives the user ID and the copy target document image from the copy target document information transmitting unit 503 of the copy apparatus 5.
The document ID reading unit 212 reads the document ID from the barcode image in the copy target document image received by the copy target document information receiving unit 211.
Specifically, for example, the document ID reading unit 212 extracts a barcode image from the copy target document image, decodes the extracted barcode image, and acquires a document ID.

The copy permission condition reading unit 213 reads from the copy condition database 21 the copy permission condition information stored in association with the document ID read by the document ID reading unit 212.
Specifically, for example, the copy permission condition reading unit 213 extracts a copy condition table storing the document ID read by the document ID reading unit 212 from the copy condition database 21, and stores the extracted copy condition table. Read copy permission condition information.

  The copy target document hash value calculation unit 214 connects the data of the copy target document image received by the copy target document information receiving unit 211 to the data of the copy permission condition information read by the copy permission condition reading unit 213, and connects the data. The hash value is calculated by applying the hash function (the hash function used by the hash value calculation unit 205 in FIG. 7 for calculating the hash value) used when creating the copy original.

The copy document hash value reading unit 215 reads a hash value based on the copy document image stored in association with the document ID read by the document ID reading unit 212 from the copy condition database 21.
Specifically, for example, the copy document hash value reading unit 215 extracts a copy condition table storing the document ID read by the document ID reading unit 212 from the copy condition database 21, and the extracted copy condition table is stored. Read hash value.

  The hash value comparison unit 216 compares the hash value calculated by the copy target document hash value calculation unit 214 with the hash value read by the copy document hash value reading unit 215 and determines whether or not they match. Then, for example, if they match, a hash value match signal is output, and if they do not match, a hash value mismatch signal is output.

  Here, the hash value calculated by the copy target document hash value calculation unit 214 is based on the same data as the hash value calculated during the copy document creation operation (the hash value read by the copy document hash value reading unit 215). Since this is a recalculated value, it should be consistent. However, for example, when a change has been made to a copy original, the hash image does not match because the original image from which the hash value is calculated is different. Unmatching can be detected.

  In addition, since a hash value is used for unmatch detection, unmatch detection can be performed at a higher speed than when image data and copy permission condition data are compared as they are.

  The copying permission condition determining unit 217 determines whether copying in the copying apparatus 5 satisfies the copying permission condition read by the copying permission condition reading unit 213. For example, when the condition is satisfied, a condition conforming signal is output. When the condition is not satisfied, a condition nonconforming signal is output.

FIG. 13 is a block diagram for explaining in detail the copying permission condition determining operation in the copying permission condition determining unit 217.
As shown in the figure, the copy permission condition determination unit 217 includes a copy qualified person determination unit 2171, a copyable sheet number determination unit 2172, a cumulative copy number request signal transmission unit 2173, a cumulative copy number reception unit 2174, and a copy valid period. It has a determination unit 2175 and a condition conformity determination unit 2176.

  The copy qualified person determining unit 2171 determines whether or not the copy qualified person condition is satisfied among the copy permission conditions. Specifically, for example, the copy qualified person determination unit 2171 has an ID that matches the user ID received by the copy target document information receiving unit 211 in the copy permission condition information read by the copy permission condition reading unit 213. It is determined whether or not it is included in the copy qualified person information. If the user ID is included in the copy qualified person information, it is determined that the copy qualified person condition is satisfied, assuming that the user has the copy qualified. On the other hand, when the user ID is not included in the copy qualified person information, it is determined that the copy qualified person condition is not satisfied.

  The copyable sheet number discriminating unit 2172 determines whether or not the copyable sheet number condition among the copy permission conditions is satisfied. Specifically, for example, when the copyable sheet number discriminating unit 2172 obtains the copyable sheet number information from the copy permission condition information read by the copy permission condition reading unit 213, the copy ID number reading unit 212 reads the document ID read by the document ID reading unit 212. A cumulative copy number request signal for reading the cumulative copy number of the copy original specified by the original ID from the log database 31 is generated.

The cumulative copy number request signal transmission unit 2173 transmits the cumulative copy number request signal generated by the copyable number determination unit 2172 to the log storage device 3 in association with the document ID.
The cumulative copy number request signal receiving unit 311 of the log storage device 3 receives the cumulative copy number request signal and the document ID from the cumulative copy number request signal transmission unit 2173 of the copy management device 2.

  When the cumulative copy number request signal receiving unit 311 receives the cumulative copy number request signal 311, the cumulative copy number reading unit 312 extracts the log table storing the received document ID from the log database 31 and extracts the extracted log table. Reads the cumulative number of copies stored.

The cumulative copy number transmission unit 313 transmits the cumulative copy number information read by the cumulative copy number reading unit 312 to the copy management apparatus 2.
The cumulative copy number receiving unit 2174 of the copy management device 2 receives the cumulative copy number information from the cumulative copy number transmission unit 313 of the log storage device 3.

  When the cumulative copy number receiving unit 2174 receives the cumulative copy number, the copyable sheet number discriminating unit 2172 compares the cumulative copy number with the copyable sheet number in the copy permission condition information read by the copy permission condition reading unit 213. If the cumulative number of copies is less than the number of copies that can be made, it is determined that the condition for the number of copies is satisfied. On the other hand, if the cumulative number of copies is equal to or greater than the number of copies that can be made, it is determined that the condition for the number of copies is not satisfied.

  The copy effective period determination unit 2175 determines whether or not the copy effective period condition is satisfied among the copy permission conditions. Specifically, for example, the copy valid period determination unit 2175 acquires the current date and time by the control unit 25 controlling the clock unit 23 shown in FIG. 3, and the acquired date and time is read by the copy permission condition reading unit 213. It is determined whether or not it is within the valid copy period in the issued copy permission condition information. If the current copy is within the valid copy period, it is determined that the valid copy condition is satisfied. On the other hand, if the present time is not within the valid copy period, it is determined that the valid copy condition is not satisfied.

  The condition conformity determination unit 2176 determines whether or not the copy permission condition is satisfied based on the determination results of the copy qualified person determination unit 2171, the copyable sheet number determination unit 2172, and the copy valid period determination unit 2175. Specifically, for example, the condition conformity determination unit 2176 determines whether all conditions of qualified copy person condition, copyable sheet number condition, and copy valid period condition are satisfied, and all the conditions are satisfied. If it is, the condition conforming signal is output to the copy permission / inhibition determining unit 218. On the other hand, if any one of the qualified copy condition, copyable sheet number condition, and valid copy period condition is not satisfied, a condition non-conformance signal is output to the copy permission / inhibition determination unit 218.

  Returning to FIG. 12, the copy permission / inhibition determination unit 218 generates a control signal for controlling the copy operation of the copy target document in the copying apparatus 5 based on the determination results in the hash value comparison unit 216 and the copy permission condition determination unit 217.

  Specifically, for example, the copy permission / inhibition determination unit 218 receives an illegal value when a hash value match signal is input from the hash value comparison unit 216 and a condition conformance signal is input from the copy permission condition determination unit 217. If it is not copying, a copy permission signal indicating that copying of the copy target document by the copying apparatus 5 is permitted is generated. On the other hand, if the hash value mismatch signal is input from the hash value comparison unit 216 or the condition nonconformity signal is input from the copy permission condition determination unit 217, the copy permission / inhibition determination unit 218 is an illegal copy. As a result, a copy prohibition signal indicating that copying by the copying apparatus 5 is prohibited is generated.

The copy control signal transmission unit 219 transmits the control signal generated by the copy permission / inhibition determination unit 218 to the copying apparatus 5.
The copy log information transmission unit 220 transmits the control signal generated by the copy permission / inhibition determination unit 218 to the log storage device 3 in association with the document ID read by the document ID reading unit 212.

The copy log information reception unit 321 of the log storage device 3 receives the control signal and the document ID from the copy log information transmission unit 220 of the copy management device 2.
Based on the control signal received by the copy log information receiving unit 321, the log table updating unit 322 updates the log table in the log database 31 storing the received document ID. Specifically, for example, when the copy log information reception unit 321 receives the copy permission signal, the log table update unit 322 accesses the log database 31 and accumulates the log table in which the received document ID is stored. Add one copy and register.
The cumulative copy number information in the log table thus updated is referred to when determining whether or not the copyable number condition of the copy permission condition is satisfied at the next copy.

The copy control signal receiving unit 504 of the copying apparatus 5 receives a control signal from the copy control signal transmitting unit 219 of the copy management apparatus 2.
The copying operation control unit 505 determines whether the control signal received by the copying control signal receiving unit 504 is a copying permission signal or a copying prohibition signal, and controls the copying operation in the copying apparatus 5 based on the determination result. . Specifically, for example, when the copy operation control unit 505 determines that the control signal is a copy permission signal, the copy operation control unit 505 outputs a copy operation start signal to the copy target document copy unit 506, and the control signal is copied. When it is determined that the signal is a prohibition signal, the output is not performed.

  The copy target document copying unit 506 performs copying of the copy target document based on an instruction from the copy operation control unit 505. Specifically, for example, the copy target document copy unit 506 is realized by the control unit 58 of FIG. 6 controlling the transfer unit 55. When a copy operation start signal is input from the copy operation control unit 505, a copy operation is performed. A copy of the copy target document is created by transferring the copy target document image acquired by the target document image acquisition unit 502 to a sheet.

  The copy discharge unit 507 is realized by the control unit 58 of FIG. 6 controlling the discharge unit 56, and discharges the copy created by the copy target document copy unit 506 to the outside of the copying apparatus 5.

  According to the present embodiment, whether or not the copy original has been changed by comparing the hash value calculated when the copy original is created based on the image data with the hash value recalculated during the copy. The copy of the original by the copying apparatus 5 can be restricted when a change is made. For example, this may be the case when a bar code of a copy original that satisfies the copy permission conditions is cut out and replaced with a bar code of a copy original that does not satisfy the copy permission conditions, so that the copy original is falsified and copied. However, the falsification can be detected by comparing the hash values, and illegal copying can be prevented. As a result, unauthorized leakage of information can be prevented.

  Even if the document identification information such as the barcode is not falsified, if there is a changed part in the content of the document, the change can be detected. For example, when copying a copy original on which a date is written, if the date is tampered with, the tampering can be detected by comparing hash values, and unauthorized copying can be prevented.

  Even if the copy permission condition in the copy condition database 21 is illegally altered after the copy document is created, the hash value is calculated based on the copy permission condition data. It is possible to detect falsification of conditions, and to prevent unauthorized copying.

  As described above, in the present embodiment, when generating a printed material with document identification information added, a document image is generated in such a manner that a barcode or the like that encodes a document ID that is document identification information is attached to the printed material. A hash value is calculated from the original image after copying the barcode (copy original image) and the copy permission condition information, and the hash value is associated with the document ID and stored together with the copy permission condition information on the copy management apparatus 2 side. Keep it.

  Specifically, the copy management apparatus 2 issues a document ID corresponding to the document based on an application from the copy document creation application device 1, and issues a barcode or the like representing the document ID. Then, a document image is created by pasting the barcode on the document. Further, based on a copy permission condition instruction from the applicant in the copy manuscript creation application apparatus 1, the copy permission condition information is stored in the copy condition database 21 in association with the document ID. Further, a hash value is calculated from the original image with the barcode pasted and the copy permission condition information, and stored in the copy condition database 21 in association with the original ID.

  Further, in the present embodiment, when a copy is generated based on a printed matter to which document identification information is added, if the copying device 5 requests the copying of the printed matter with a barcode, the copying device 5 adds the barcode. The image image is transmitted to the copy management apparatus 2 side, and the copy management apparatus 2 side reads the document ID from the barcode of the transmitted image image with the barcode and associates it with the document ID in the copy management apparatus 2. The copy permission condition information and the hash value stored in advance are searched and extracted. Further, the copy management apparatus 2 calculates a hash value again from the barcode-added image transmitted this time and the extracted copy permission condition information, and extracts the above-mentioned original stored in the copy management apparatus 2 side. Compare with hash value. As a result of the comparison, if the hash values match and the copy permission condition is satisfied, the copy management device 2 permits the copy of the printed matter with the barcode in the copy device 5.

  Specifically, the copy management device 2 reads the document ID from the document image with a barcode or the like transmitted from the copy device 5 and stores the hash value and the copy permission stored in association with the document ID. Condition information is extracted from the copy condition database 21. Then, the hash value is recalculated from the original image with a barcode or the like transmitted from the copying apparatus 5 and the extracted copying permission condition information. Then, the recalculated hash value is compared with the extracted hash value stored in the copy condition database 21. In order to limit the unmatching of the original at the time of creation and copying as an illegal copy, copying is prohibited when the hash values do not match.

  As described above, in the present embodiment, a hash value is calculated in advance based on an image with a barcode indicating a document ID and the copy permission condition information, and is stored in the copy management apparatus 2. For this reason, even if only the barcode indicating the document ID is cut out and pasted to another document, it is stored in advance on the copy management apparatus 2 in association with the document ID when recalculating and collating the hash value. Inconsistency with the generated hash value is caused, so that illegal copying can be prevented.

Although the embodiments of the present invention have been described above, the present invention can be modified and applied in various forms and is not limited to the above embodiments.
For example, in the above embodiment, a hash value is calculated by applying a hash function to the data obtained by connecting the original image data and the copy permission condition data, and the hash value is obtained when the copy original is created and when the copy is made. The change of the original was detected by comparing However, the present invention is not limited to this, and any other calculation method that can be used for comparing data, for example, can be used as long as it is a calculation method that can detect a change in the original between the time of making a copy original and the time of copying. You may make it compare a value by applying a function.

The method for connecting the image data of the original and the data of the copy permission condition may be the same method at the time of the hash value calculation at the time of creation of the copy original and at the time of the hash value recalculation at the time of copying. The copy permission condition data may be connected to the original image data before or after.
Further, instead of or in addition to the copy permission condition data, the hash value may be calculated by connecting other data to the original image data. For example, the identification information of the copy management apparatus 2 is connected. It's okay to calculate.

  Further, it is also possible to detect changes in the document by comparing only the image information of the document. For example, the hash values calculated based only on the image data of the document may be compared when the document for copying is created and at the time of copying, or the image data of the document may be compared. As a result, the present invention can be applied to a system that prevents unauthorized copying by determining only the falsification of a document without determining the copy permission condition. In this case, for example, the hash value calculation unit 205 in FIG. 7 and the copy target document hash value calculation unit 214 in FIG. 12 calculate a hash value based only on the image data, and the copy permission / inhibition determination unit 218 has a hash value comparison result. It is sufficient to determine whether or not copying is possible only from the above.

  In the above embodiment, the copy permission condition for permitting copying is set and judged as the copy condition for the document. However, the copy condition is set by setting information for restricting or prohibiting copying. May be determined.

  In the above embodiment, the copying apparatus 5 performs copying one sheet at a time. However, the copying apparatus 5 may copy a plurality of sheets simultaneously. In that case, information on the number of copies to be scheduled is transmitted from the copying apparatus 5 to the copy management apparatus 2, and in the copy management apparatus 2, the number obtained by adding the scheduled number of copies to the cumulative number of copies is equal to or less than the copyable number. It is sufficient to determine whether or not the copy permission number condition of the copy permission condition is satisfied. Furthermore, if copying is permitted, the scheduled number of copies may be added to the cumulative number of copies in the log database 31.

  In the above embodiment, the copy management device 2 and the log storage device 3 are separate devices. However, for example, the copy management device 2 may include the log database 31 as one device.

  In the above embodiment, the case where an image scanner or the like is used to input image data of the original document in the copy document creation application apparatus 1 has been described as an example. Document data of a manuscript to be obtained may be acquired, the document data may be converted into image data by software, and image data of the manuscript may be input.

  In the above embodiment, ID information of a user or the like is input by a card reader or the like, but an ID number may be input by a keyboard or the like.

  In the above embodiment, the log information accumulated in the log database 31 has been described using the log table shown in FIG. 9, but the log information is not limited to that shown in FIG. As a result of determining whether or not copying is possible in the copy management apparatus 2, the user ID, the copy date and time, the copy apparatus ID, and the like may be recorded. In such a case, the log storage device 3 may receive a copy permission / inhibition result from the copy management device 2 and receive a user ID, copy date / time, copy device ID, etc. from the copy management device 5. .

  In this case, the log storage device 3 that records the determination result of the copy management device 2 from the copy management device 2 in the log database 31 without sending a control signal directly from the copy management device 2 to the copy device 5 A control signal based on the determination result may be transmitted to the copying apparatus 5.

  In the above embodiment, an example has been described in which personal ID information or the like is set as copy qualified person information in the copy permission condition. For example, copy qualified person information is set by a group or the like. Also good. In this case, for example, the copy management apparatus 2 includes a group member database for identifying the members of the group, and accesses the group member database when determining the copy qualified person conditions. It may be determined whether the user No. 5 is a member of a group set as a qualified copy person.

  In the above embodiment, the copy permission / inhibition determination unit 218 in FIG. 12 determines whether or not copying is possible after both the hash value comparison unit 216 and the copy permission condition determination unit 217 have been determined. However, for example, if one of the hash value comparison unit 216 and the copy permission condition determination unit 217 determines that the copy is illegal, the copy is performed without performing the determination of the other. You may make it prohibit.

Note that the copy manuscript creation application device 1, the copy management device 2, and the log storage device 3 constituting the copy management system according to the embodiment of the present invention are not limited to dedicated hardware, but are ordinary computer systems. Can also be realized.
For example, in the above-described embodiment, the operation program of each device has been described as being stored in advance in a memory or the like in each of the copy original creation application device 1, the copy management device 2, and the log storage device 3. However, a program for executing the above-described processing operation is recorded on a computer-readable recording medium such as a flexible disk, a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), or an MO (Magneto-Optical disk). Each device that performs the above-described processing operation may be configured by storing and distributing the program in a medium and installing the program in a computer.

Further, the program may be stored in a disk device or the like included in a predetermined server device on a communication network such as the Internet, and may be downloaded onto a computer by being superimposed on a carrier wave, for example. Furthermore, the above-described processing can also be achieved by starting and executing a program while transferring it via a communication network.
In addition, when the above functions are realized by sharing an OS (Operating System), or when the functions are realized by cooperation between the OS and an application, only the part other than the OS may be stored in a medium and distributed. Alternatively, it may be downloaded to a computer.

1 is a block diagram illustrating a configuration example of a copy management system according to an embodiment. It is a block diagram which shows the structural example of the original document preparation application apparatus for copying shown in FIG. FIG. 2 is a block diagram illustrating a configuration example of a copy management apparatus illustrated in FIG. 1. It is a block diagram which shows the structural example of the log storage apparatus shown in FIG. FIG. 2 is a block diagram illustrating a configuration example of a printing apparatus illustrated in FIG. 1. FIG. 2 is a block diagram illustrating a configuration example of the copying apparatus illustrated in FIG. 1. FIG. 3 is a block diagram illustrating an example of a functional configuration of a copy management system related to a copy original creation operation. It is a figure which shows the data structural example of a copy condition table. It is a figure which shows the data structural example of a log table. FIG. 3 is a block diagram illustrating an example of a functional configuration of a copy management system related to a copy original creation operation. It is a figure which shows the example of the original for a copy. It is a block diagram which shows the function structural example of the copy management system regarding the copy operation | movement of the original for a copy. FIG. 13 is a block diagram for explaining in detail a copying permission condition determining operation in a copying permission condition determining unit shown in FIG. 12;

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Copy original preparation application apparatus 2 Copy management apparatus 3 Log storage apparatus 4 Printing apparatus 5 Copy apparatus 6 Communication network 11, 41, 51 Input part 12 Output part 13, 22, 32, 42, 52 Communication part 14, 24, 33 , 46, 57 Storage unit 15, 25, 34, 47, 58 Control unit 16, 26, 35, 48, 59 Bus 21 Copy condition database 23, 43 Timing unit 31 Log database 44 Printing unit 45, 56 Paper discharge unit 53 Document Placement unit 54 Document reading unit 55 Transfer unit 101 Document image input unit 102 Copy permission condition input unit 103 Applicant ID input unit 104 Application information transmission unit 151,251,341,471,581 CPU
152,252,342,472,582 ROM
153,253,343,473,583 RAM
201 Application Information Receiving Unit 202 Document ID Generating Unit 203 Barcode Image Creating Unit 204 Copying Document Image Creating Unit 205 Hash Value Calculation Unit 206 Copying Condition Table Creating Unit 207 Copying Document Information Transmitting Unit 211 Copying Document Information Receiving Unit 212 Document ID reading section 213 Copy permission condition reading section 214 Copy target document hash value calculation section 215 Copy document hash value reading section 216 Hash value comparison section 217 Copy permission condition determination section 218 Copy permission determination section 219 Copy control signal transmission section 220 Copy log Information transmitting unit 301 Copying document information receiving unit 302 Log table creating unit 303 Applicant ID receiving unit 304 Copying document image reading unit 305 Copying document image transmitting unit 306 Print log information receiving unit 307 Print log information recording unit 311 Cumulative copying Number request signal Reception unit 312 Cumulative copy number reading unit 313 Cumulative copy number transmission unit 321 Copy log information reception unit 322 Log table update unit 401 Applicant ID input unit 402 Applicant ID transmission unit 403 Copy original image reception unit 404 Copy original print unit 405 Copying document discharge unit 406 Print log information acquisition unit 407 Print log information transmission unit 501 User ID input unit 502 Copy target document image acquisition unit 503 Copy target document information transmission unit 504 Copy control signal reception unit 505 Copy operation control unit 506 Copy target document copy unit 507 Copy material discharge unit 2171 Copy qualified person determination unit 2172 Copyable sheet number determination unit 2173 Cumulative copy number request signal transmission unit 2174 Cumulative copy number reception unit 2175 Copy validity period determination unit 2176 Condition conformity determination unit

Claims (5)

A copy original image acquisition means for acquiring image data of a copy original to which original identification information for identifying the original is added;
Copy condition acquisition means for acquiring copy condition information which is a condition for determining whether or not to permit copying of the copy original in the copying apparatus;
A copy document hash value calculation unit that calculates a hash value using a predetermined hash function based on the image data acquired by the copy document image acquisition unit and the copy condition information acquired by the copy condition acquisition unit;
Information storage means for storing the hash value calculated by the copy original hash value calculation means and the copy condition information acquired by the copy condition acquisition means in association with the original identification information;
A copy target document image acquisition means for acquiring image data of a copy target document that is a copy target document when the copy document is copied in the copying apparatus;
Copy condition reading means for reading copy condition information stored in association with the document identification information added to the copy target document from the information storage unit;
A copy target document hash value calculating unit that calculates a hash value using the predetermined hash function based on the image data acquired by the copy target document image acquiring unit and the copy condition information read by the copy condition reading unit; ,
A hash value reading means for reading out a hash value stored in association with the document identification information added to the copy target document from the information storage unit;
A hash value determining means for determining whether or not the hash value calculated by the copy target document hash value calculating means and the hash value read by the hash value reading means match;
Copy condition determining means for determining whether or not the copy of the copy target document in the copying apparatus satisfies the copy condition information read by the copy condition reading means;
A signal for permitting copying of the original to be copied in the copying apparatus when the hash value determining means determines that the hash values match and the copy condition determining means determines that the copy condition information is satisfied. And when the hash value discriminating unit discriminates that the hash values do not match, or when the copying condition discriminating unit discriminates that the copy condition information is not satisfied, the copy target document in the copying apparatus Control signal output means for outputting a signal for prohibiting copying of
A copy management apparatus comprising: The copy original image acquisition means includes:
Document image acquisition means for acquiring image data of a document;
Identification information generating means for generating document identification information for identifying the document;
Barcode image creation means for creating barcode image data having document identification information generated by the identification information generation means;
Image synthesizing means for synthesizing the barcode image data created by the bar code image creating means with the image data of the original obtained by the original image obtaining means to obtain image data of the original for copying. ,
The information storage means stores the hash value calculated by the copy original hash value calculation means and the copy condition information acquired by the copy condition acquisition means in association with the original identification information generated by the identification information generation means. And
The copy target document image acquisition unit acquires image data of a copy target document on which a barcode is printed by printing image data of a copy document acquired by the image composition unit;
The copy condition reading unit acquires document identification information from a barcode printed on the document to be copied, and reads copy condition information stored in association with the acquired document identification information from the information storage unit. ,
The hash value reading unit acquires document identification information from a barcode printed on the copy target document, and reads a hash value stored in association with the acquired document identification information from the information storage unit.
The copy management apparatus according to claim 1. Computer
Copy document image acquisition means for acquiring image data of a copy document to which document identification information for identifying the document is added;
Copy condition acquisition means for acquiring copy condition information which is a condition for determining whether or not to permit copying of the original for copying in a copying apparatus;
A copy document hash value calculation unit that calculates a hash value using a predetermined hash function based on the image data acquired by the copy document image acquisition unit and the copy condition information acquired by the copy condition acquisition unit;
Information recording means for recording the hash value calculated by the copy original hash value calculation means and the copy condition information acquired by the copy condition acquisition means in association with the original identification information in a storage unit;
A copy target document image acquisition means for acquiring image data of a copy target document that is a copy target document when copying of the copy document is performed in the copying apparatus;
Copy condition reading means for reading copy condition information recorded in association with document identification information added to the copy target document from the storage unit;
A copy target document hash value calculating unit that calculates a hash value using the predetermined hash function based on the image data acquired by the copy target document image acquiring unit and the copy condition information read by the copy condition reading unit;
A hash value reading means for reading out a hash value recorded in association with the document identification information added to the copy target document from the storage unit;
A hash value determining means for determining whether or not the hash value calculated by the copy target document hash value calculating means and the hash value read by the hash value reading means match;
Copy condition discriminating means for discriminating whether or not copying of the original to be copied in the copying apparatus satisfies the copy condition information read by the copy condition reading means;
A signal for permitting copying of the original to be copied in the copying apparatus when the hash value determining means determines that the hash values match and the copy condition determining means determines that the copy condition information is satisfied. And when the hash value discriminating unit discriminates that the hash values do not match, or when the copying condition discriminating unit discriminates that the copy condition information is not satisfied, the copy target document in the copying apparatus Control signal output means for outputting a signal for prohibiting copying
Program to function as. Image information storage means for storing image information of a copy original in association with the original identification information when a copy original to which original identification information is added is created;
When copying a copy document in the copying apparatus, the image information storage means is associated with image information of the copy target document which is a copy document to be copied and document identification information added to the copy target document. Change determining means for determining whether or not the copy document has been changed based on the image information stored in
A signal output means for outputting a signal for prohibiting copying of the copy target original in the copying apparatus when the change determining means determines that the copy original has been changed;
A copy management apparatus comprising: The image information is a hash value calculated from image data,
The image information storage means includes
A copy original image acquisition means for acquiring image data of the copy original;
A copy original hash value calculation means for calculating a hash value by applying a predetermined hash function to the image data acquired by the copy original image acquisition means;
Hash value storage means for storing the hash value calculated by the copy original hash value calculation means in association with the original identification information;
The change determining means includes
Copy target document image acquisition means for acquiring image data of the copy target document;
A copy target document hash value calculation unit that calculates a hash value by applying the predetermined hash function to the image data acquired by the copy target document image acquisition unit;
Based on the hash value calculated by the copy target document hash value calculation unit and the hash value stored in the hash value storage unit in association with the document identification information added to the copy target document Hash value determination means for determining whether or not the document has been changed,
The copy management apparatus according to claim 4.

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