JPH10294726A - Copyright object management method and system therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing management method and system therefor, where a utilizing condition is set arbitrary to copyright information for regulating the utilizing mode in details, thereby diversifying the choices and sufficiently protecting copyright objects. SOLUTION: In this system, a copyright object management center. A executes a step (ST 1) where copyright information β is embedded to a copyright object α, a step (ST 2) where the copyright object α in which the copyright information β is embedded is given to a user terminal B, together with a key information γfor extracting the copyright information β or separately via a storage medium M or a network N. The user terminal B executes a step (ST 3) where the copyright information β is extracted, based on the key information γ, a step (ST 4) where a utilizing condition set in advance optionally is executed from the copyright information β, a step (ST 5) where the utilizing processing within an available range is executed when the utilization in possible, and a step (ST 6) where the utilizing processing is rejected and warning are sequentially generated, when the utilization is prohibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of embedding copyright information in an image (still image, moving image) or audio work, and using the work based on the copyright information at the time of use. And a system directly used for implementing the method.

[0002]

2. Description of the Related Art In order to prevent illegal use of copyrighted works and protect copyright holders, various devices have been conventionally devised. For example, when a copyrighted work is stored on a storage medium such as an optical disk and provided to a user, a predetermined waveform indicating copy prohibition is inserted within a blanking period of a video signal of a video being a copyrighted work. In the meantime, at the time of reproduction, the recording of the video signal is prohibited by detecting the waveform, and the copyright information is stored in an area different from the storage area of the copyrighted work. That control take-out and playback operations,
(For example, see Japanese Patent Application Laid-Open No. 8-147856).

As an example of a case where a copyrighted work is delivered via a network, the copyrighted work and copyright information are encrypted and delivered to a user terminal, and the user terminal can only decrypt a specific user. In some cases, the usage of the user is restricted (for example, 7-1314).
No. 52).

[0004]

However, in each of the former methods, since the copyrighted information for restricting the use of the copyrighted work and the copyrighted work are handled separately, the copyright information is extracted and falsified. There is a problem that copyright protection is insufficient. On the other hand, in the latter method, there is a problem that anyone can use it relatively easily after decryption at the user terminal, and the transfer of the copyrighted work is insufficient. In addition, there is no method for more simply restricting the use of each literary work for each of various use modes, and it is not sufficient for various generous protections in which options are expanded according to users.

The main objects to be solved by the present invention are as follows. That is, the first object of the present invention is to provide a copyright management method and system which arbitrarily set usage conditions in copyright information and finely regulate the usage mode, and more sufficiently protect the copyrighted work. Is what you do.

A second object of the present invention is to provide a copyrighted work management method and system for extracting copyright information and making it falsified.

[0007] A third object of the present invention is to provide a method and system for managing a copyrighted work which makes it difficult to extract copyright information by embedding copyright information in a copyrighted work and integrating it with the copyrighted work. It is assumed that.

A fourth object of the present invention is to provide a method and system for managing a literary work which employs a digital watermarking technique for integral embedding.

[0009] Other objects of the present invention will become apparent from the description of the specification, drawings, and particularly from the claims.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, copyright information obtained by arbitrarily setting use conditions is converted into a copyrighted work by using digital watermarking technology. Simultaneous or separate provision to the user makes it difficult to extract copyright information and ensures sufficient protection of copyrighted work, while checking the usage conditions pertaining to copyright information and, if available, copyrighted work The usage process is executed within the usage restriction of the user, and if the usage is not available, the usage is refused and a warning is issued, thereby diversifying the usage modes with the widened options.

More specifically, in order to solve the above-mentioned problems, the present invention achieves the above object by adopting a novel characteristic configuration method or means ranging from a superordinate concept to a subordinate concept listed below. I do.

That is, the first feature of the method of the present invention is that, in managing the use of a work, copyright information in which use conditions are arbitrarily set is embedded in the work and various restrictions are imposed on the use. It is in the adoption of the composition of the work management method.

A second feature of the method of the present invention is that, on the management side,
The step of embedding copyright information integrally in the work, and the work in which the copyright information is embedded is appropriately transmitted through an information transmitting means,
Providing simultaneously or separately key information necessary for extracting the embedded copyright information to the user, and extracting the copyright information based on the provided key information on the user side. Determining the use conditions that have been arbitrarily set in advance from the copyright information, executing the use process within the allowable range if the use is possible, rejecting the use process if the use is prohibited, and issuing a warning. And a step of generating the copyrighted work management method.

A third feature of the method of the present invention is that the work according to the first or second feature of the method of the present invention adopts a configuration of a work management method in which the work includes images such as still images and moving images and sound. It is in.

A fourth feature of the method of the present invention is that the copyright information in the first, second or third feature of the method of the present invention is:
Whether or not permission has been granted for each usage type or for all usage types, available period, usage restrictions by user ID,
In this case, the use condition is roughly classified and the copyright management method is adopted.

According to a fifth feature of the method of the present invention, the presence or absence of a license in the fourth feature of the method of the present invention is based on the presence of a license for all use types that permit execution of all use processes. Issue a warning and reject the execution of all usage processes No usage license for all usage types, and use when there is a usage license for each usage type that allows execution of usage processes for the usage type Type of use with permission,
Issues a warning and rejects the use process of the applicable usage type. Uses a configuration of a copyrighted work management method that classifies check results into usage types without a license if there is a license for each usage type. It is in.

According to a sixth feature of the method of the present invention, the use type in the fifth feature of the method of the present invention is display display when the image is an image, audio device output when the type of use is audio, writable storage medium copy, and other uses. The present invention lies in the adoption of a configuration of a copyrighted work management method which is a variety of usage modes such as transfer to a person.

According to a seventh feature of the method of the present invention, the usable period in the fourth, fifth or sixth feature of the method of the present invention is defined as the range of the usable period when the use is permitted to execute the use process. There is a configuration of the copyrighted work management method in which the check results are classified into items within and within the range of the usable period when the use is refused to execute the use processing.

An eighth feature of the method of the present invention is the user I in the fourth, fifth, sixth or seventh feature of the method of the present invention.
The use restriction by D is the use by the user ID that allows the execution of the use process, and the user I that refuses to execute the use process.
The present invention lies in the use of an ID other than D and the adoption of a configuration of a copyrighted work management method in which check results are classified into items.

A ninth feature of the method of the present invention is that, in the eighth feature of the method of the present invention, the use restriction check by the user ID is a step of judging whether there is a use restriction by the user ID; A step of checking other usage restrictions; a step of inputting an ID from the user, if any; a step of determining whether the user ID matches the user ID of the copyright information; and a warning if the two do not match. And a step of rejecting the use processing by issuing a check, and in the case of a match, a step of checking another use restriction.

A tenth feature of the method of the present invention is that when the use is prohibited in the second feature of the method of the present invention, the copyright information is newly updated on the user side, and the copyright information is updated on the management side. The present invention is characterized in that the copyright information embedding process is performed, or the copyright information embedding process is directly performed on the user side to newly enable and use the copyright information.

An eleventh feature of the method of the present invention is that, when the use is prohibited in the second feature of the method of the present invention, the copyright information is newly updated on the user side, so that the management side can update the copyright information. The present invention lies in adopting a configuration of a copyrighted work management method in which copyright information is embedded and made available.

A twelfth feature of the method of the present invention is that when the use is prohibited in the second feature of the method of the present invention, the management side performs a new copyright information update process so that the management side can update the copyright. The present invention resides in adopting a configuration of a copyrighted work management method in which a right information embedding process is performed and a use process is performed.

A thirteenth feature of the method of the present invention is that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh of the method of the present invention are described. Alternatively, the integrated embedding in the twelfth aspect is in adopting a configuration of a copyrighted work management method employing a digital watermark technique.

A fourteenth feature of the method of the present invention is that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh aspects of the method of the present invention are described. The twelfth or thirteenth aspect of the invention is characterized in that the information transmission means appropriately adopts a configuration of a work management method which is a storage medium or a network.

According to a fifteenth feature of the method of the present invention, the storage medium according to the fourteenth feature of the method of the present invention is arranged such that the storage medium is a CD-RO.
The present invention resides in adopting a configuration of a copyrighted work management method including M, CD, DVD-ROM, magneto-optical disk, FD, and the like.

A sixteenth feature of the method of the present invention is that the network according to the fourteenth feature of the present invention is such that the network is the Internet, an intranet, an extranet, a CON,
CDN, LAN, ISDN, VAN, CATV communication network,
Virtual private network, telephone line network, mobile communication network, satellite communication network,
The present invention resides in adopting a configuration of a copyrighted work management method including an optical communication network or the like.

A first feature of the system of the present invention is that recording means for recording a work and copyright information, copyright information embedding processing means for embedding the copyright information in the work read from the recording means, A work management center having an output processing means for freely transmitting a copyrighted work in which the copyright information is embedded, an input processing means for transmitting and inputting the copyrighted work, A user terminal having copyright information determination processing means for checking a use condition of the copyright information, and use processing means for performing use processing within an available range based on the check result; The terminal and the copyrighted work center are configured to adopt a copyrighted work management system in which information is freely interconnected via a network or through the provision of a storage medium.

A second feature of the present invention system is that the copyright information judging means of the user terminal in the first feature of the present invention system is a copyright information extracting processing means for extracting copyright information embedded from a work. And a usage condition processing means for checking usage conditions based on the copyright information.

A third feature of the present invention system is that the copyright information determination processing means of the user terminal in the first or second feature of the present invention system is stored in the storage means of the copyright management center. Copyright information update processing means for indirectly newly updating copyright information, and copyright information embedding processing means for separately embedding the copyright information to be newly updated directly into the work itself. The present invention resides in adopting a configuration of a copyrighted work management system that can be used in any case where use is prohibited.

A fourth feature of the system of the present invention resides in that the copyright information judgment processing means of the user terminal in the first, second or third feature of the system of the present invention is used for resolving a use prohibition or setting a use condition. Connects the copyright information update processing means that indirectly newly updates the copyright information in order to change the copyright information, and updates the copyright information stored in the storage means of the copyright management center via the network with the updated copyright information. Another object of the present invention is to adopt a configuration of a copyrighted work management system that can be newly embedded in a copyrighted work by information embedding processing means.

A fifth feature of the system of the present invention resides in that the storage means of the copyright management center according to the first, second, third or fourth feature of the system of the present invention is adapted to update the copyright information for newly updating copyright information. Another aspect of the present invention is to employ a copyright management system which is connected to the copyright information update processing means and is capable of directly updating the copyright information stored in the storage means.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings with respect to an example of a system and an example of a method thereof. In addition,
In the present embodiment, the Internet is exclusively assumed as the network, but the present invention is not limited to this, and other intranets, extranets, CON, COM, LAN, IS
A DN, VAN, CATV communication network, a virtual private network, a telephone line network, a mobile communication network, a satellite communication network, and the like are also applicable, and include a wired, wireless, optical communication, and a CD-RO as a storage medium.
It includes M, CD, magneto-optical disk, DVD-ROM, FD, etc., and is intended for images and sounds such as still images, moving images, etc. even as literary works.

(Example of System) FIG. 1 is a block diagram showing the configuration of an example of the present system, and FIG. 2 is a block diagram showing the system at the time of updating copyright information. FIG. 1A shows both the updating and embedding of copyright information. Is performed at the user terminal, (b) the copyright information is updated at the user terminal and the embedding process is performed at the copyright management center, respectively, and (c) is both the copyright information updating process and the embedding process. Are performed by the copyright management center, respectively.

This system example comprises a storage means 1 for storing copyrighted information α and copyright information β in which usage conditions are arbitrarily set;
A copyright management center A having a copyright information embedding processing means 2, an output processing means 3, an input processing means 4, a copyright information extraction processing means 5, and a copyright information determination processing means 7 comprising a use condition processing means 6. And the user terminal B having the use processing means 8 by connecting the output processing means 3 and the input processing means 4 via a network N so that information can be freely transmitted, or input processing from the output processing means 3 through the storage medium M. The information is provided to the means 4 so as to be freely transmitted.

The copyright information embedding processing means 2 has a processing function of embedding copyright information β in the work α read from the storage means 1. The copyright information determination processing means 7
The copyright information β of the work α input from the input processing means 4
The copyright information extraction processing means 5 has a function of extracting copyright information β from the copyrighted work α, and the usage condition processing means 6 has a function of checking usage conditions based on the copyright information β. Have.

In FIG. 2, reference numerals 9 and 10 denote copyright information update processing means and copyright information embedding processing means connected to the copyright information determination processing means 7 of the user terminal B, and reference numeral 11 denotes a storage means of the copyright management center A. 1 is a copyright information update processing means connected to the server. The copyright information update processing means 9 and 11 have a function of updating the copyright information β with new copyright information β so that the use prohibition of the copyrighted material α can be used.
1 has a function of newly embedding the updated copyright information β into the work α.

(Method Example) An execution procedure of a method example of the present embodiment applied to the present system example will be described. FIG. 3 is a flowchart of the entire operation of the example of the method.

(1) Overall Processing Procedure First, in the copyright management center A, the copyrighted material α and the copyright information β are read from the storage means 1, and the copyrighted information embedding processing means 2 converts the copyrighted material α and the copyright information β into the copyrighted material α. Is embedded based on the copyright information extraction key information γ prepared in advance (ST1).

Next, the work α in which the copyright information β is embedded is output to the storage medium M or the network N via the output processing means 3 of the work management center A, and is provided to the user terminal B ( ST2). At this time, the embedded copyright information β extraction key information γ is provided to the user terminal B simultaneously or separately.

In the user terminal B, first, the copyrighted work α is inputted by the input processing means 4, and the copyrighted information β based on the key information γ is obtained by the copyrighted information extracting means 5 of the copyrighted information judging processing means 7. Is taken out (ST3). Next, the use condition is checked by the use condition processing means 6 of the copyright information determination means 7 to determine whether or not use is possible (ST4).

Subsequently, when it is determined that the work can be used, the work α is delivered to the use processing means 8, and the use processing means 8 executes a use process according to the use condition (ST5).
Further, if it is determined that the service cannot be used, the use processing means 8
To that effect, the delivery of the work α is refused, the use is rejected, and a warning is issued (ST6). In the use processing means 8,
When a warning is issued, a display, a lamp, a buzzer, or the like is used to draw an audiovisual attention.

(2) Copyright Information Embedding Processing Procedure This method example uses a digital watermark technique as a basic technique for embedding copyright information β in a work α. The digital watermark technology is a technology that embeds other information in digital information (image (still image, moving image), sound) so as not to be perceived by a human, and can extract the embedded information when necessary. .

FIG. 4A shows the principle of the digital watermarking technique when the digital information is image information.
(B) (for details, refer to Japanese Patent Application No. 8-30537).
No. 0, Japanese Patent Application No. 8-338679). FIG.
(A) is a diagram showing a flow of processing when the copyright information β (embedded information) is embedded in the image information as the copyrighted work α in the copyrighted work management center A.

In the decomposing process P1, the copyright information embedding means 2 decomposes the original image into a plurality of blocks each consisting of n pixels × m pixels. In the case of a moving image, it is divided for each frame, and each frame is decomposed into a plurality of blocks. In the orthogonal transform process P2, discrete cosine transform (DCT transform) of transform coding is performed on each block decomposed by the decomposing process.
And so on to obtain an n × m frequency component matrix.

Prior to embedding the embedding information, an embedding position γ1 for determining at which position in the frequency component matrix obtained in the orthogonal transformation process P2 the copyright information β is to be embedded is determined by a random number, and the frequency of the position γ1 is further determined. The change amount γ2 indicating how much the value of the component is changed is determined, and random number information for determining the embedding position γ1 and the change amount γ2 are acquired as key information γ.

In the embedding process P3, the copyright information β
Need not be embedded in the frequency component matrix for one block, but may be embedded across the frequency component matrices of a plurality of blocks. By selecting, for example, a low-frequency portion of the frequency component matrix as the embedding position γ1, the embedding can be performed so that it cannot be perceived by humans. Also, by changing the change amount γ2, the difference from the original value of the frequency component matrix can be changed, so that the deterioration of the image quality can be controlled.

In the embedding process P3, the value of the frequency component matrix of each block is changed based on the embedding position γ1 of the key information γ and the change amount γ2, and the copyright information β is embedded. In the inverse orthogonal transform process P4, the frequency component matrix of each block in which the copyright information β is embedded by the embedding process P3 is subjected to inverse orthogonal transform to obtain a block image of n pixels × m pixels. In the reconstruction processing P5, the inverse orthogonal transformation processing P4
Are joined together to obtain a watermark image in which the copyright information β is embedded.

(3) Copyright Information Retrieval Processing Procedure FIG. 4B is a diagram showing a flow of processing when the user terminal B retrieves an embedded image from a watermark image. In the decomposing process Pa, the copyright information determination processing unit 7 decomposes the watermark image input from the input processing unit 4 into a plurality of blocks each including n pixels × m pixels. In the orthogonal transformation processing Pb, orthogonal transformation is performed on each block decomposed in the decomposition processing Pa to obtain an n × m frequency component matrix.

In the extraction process Pc, the embedding process P3
The embedding position γ1 and the amount of change γ2 are obtained from the key information γ used in step, and the copyright information β is extracted from the frequency component matrix of each block.

When the digital information as the copyrighted work α is audio information, the specific processing method at the time of embedding and taking out is different from that of the image information. The copyright information β is embedded in the redundant portion of the audio information by executing the encoding process accompanied by the distortion due to the conversion, the position information γ1 and the like are used as the key information γ, and the copyright information β is embedded based on the key information γ. , Can be taken out. For a digital watermarking technique for audio information, for example, Japanese Patent Application No. 9-22340 is referred.

As described above, the digital watermarking technique is
1. 1. The copyright information cannot be extracted without the key information γ used at the time of embedding. 2. The embedding position information γ1 in the key information γ is not fixed because it is generated by random numbers, and it is difficult to decipher the copyright information β. 3. The copyright information β can be embedded so that humans cannot perceive it by devising the embedding position γ1. The degree of image quality degradation can be controlled by changing the change amount γ2,
And so on.

(4) Procedure for Providing Key Information for Retrieving Embedded Copyright Information to User Terminal The process of extracting the copyright information β needs to be performed based on the key information γ used at the time of embedding. . Therefore, the user terminal B needs to obtain the key information γ from the copyright management center A in which the copyright information β is embedded.

When the key information γ is different for each work α, the acquisition method is to acquire the work α together with the work α every time the work α is provided from the work management center A. That is,
When provided by the storage medium M, the work management center A stores the key information γ together with the work α in the storage medium M, and when provided via the network N, the work α The key information γ is delivered before and after the delivery of the user terminal B, so that the user terminal B acquires the key information γ.

When the key information γ is different for each user, not for each work α, the key information γ is obtained from the work management center A when the user first uses the key information γ. That is, the storage medium M
In this case, the copyrighted information is provided from the copyright management center A via the network N or the key information γ prior to use.
Is obtained at the user terminal B by manual input or the like from the storage medium M in which is stored or the user terminal B.

Further, when the key information γ is different for each user terminal B or when the key information γ is common to all the literary works α, the key information γ may be inserted into the user terminal B from the beginning by the above-described method or the like. In the case where the key information γ is obtained from the copyright management center A, the user terminal B is securely used by using an encryption technique or the like.
It is preferable to be able to acquire by.

(5) Procedure for Determining Use Condition of Extracted Copyright Information FIG. 5 is a correlation comparison table for use processing of copyright information. The correlation table T shows a copyright information β column, a check result β1 column, and a use process β2 column. Examples of the copyright information β to be embedded in the copyrighted work α are roughly classified by use type or all use types. , A use period, and a use restriction by a user ID.

Examples of usage types include display on the display when the copyright α is an image, output to an audio device when the copyright α is audio, copying to a writable storage medium,
Transfer to another user is conceivable.

Therefore, in the use condition determination, the extracted copyright information β is separately stored in the copyright information determination processing means 7.
A search result β1 and a use process β2 are determined by searching and collating and checking which field of which column of the correlation comparison table stored in the storage means (not shown) provided in.

(6) Processing Procedure with Copyright Information Restricted by User ID FIG. 6 is an operation flow in the case where the usage information is restricted by user ID. In the figure, ST1 to ST4 are the same as ST1 to ST4 in the overall operation flow of copyright management shown in FIG.

If the use condition judgment of the copyright information β is a use restriction item based on the user ID in the copyright information β column of the correlation comparison table T, the user I embedded in the work α
It is necessary to check the ID of the person who uses D and the work α. The following describes the execution procedure.

First, it is determined whether or not the use is restricted by the user ID (STa). Next, in the case where there is no such information, the usage restriction of another item in the copyright information β column of the correlation table T is checked (STb). In some cases, the user inputs an ID (STc).

Subsequently, it is determined whether or not the copyright information β matches the input user ID (STd). If they do not match, the use process is rejected without delivering the work α, and a warning is issued (STe). In the case of a match, the use restriction of another item in the copyright information β column of the correlation table T is checked (STf).

(7) Copyright Information Updating Procedure When the copyrighted material α cannot be used because the use processing is not possible,
As a method for updating the copyright information β and making it usable, copyright information embedding processing means 2 and 10 for embedding the copyright information β in the work α and copyright information updating processing means 9 for updating the copyright information β , 11 in the user terminal B or the copyright management center A,
There is a method (c).

That is, the copyright information embedding processing means 10 provided in the user terminal B of FIG. 2A is a means for newly adding to the user terminal B. Also, (b) and (c) of FIG.
The copyright information embedding processing means 2 in the copyrighted work management center A uses the basic configuration of the present system example shown in FIG. 1 as it is. Further, the copyright information update processing means 9 and 11 in (a) to (c) of FIG. 2 perform a process of updating the content of the copyright information β using a man-machine interface or the like. It does not include copyright information embedding processing means to be embedded in the work α.

In the case of FIG. 2A, the key information γ of the basic configuration of the present system example is updated with the same key information γ (the user terminal B has already obtained it from the copyright management center A by some method). Information may be embedded, or other key information (not shown) may be created and embedded. In any case, since the key information in which the update information is embedded can be obtained in the user terminal B, it is necessary to obtain the key information for extracting the copyright information updated in the user terminal B from the copyright management center A. Absent.

In the case of FIG. 2B, the copyright information updated at the user terminal B is sent to the copyright management center A via the network N or the storage medium M. , The updated copyright information is embedded using the same key information γ as before the update or another key information. When the key information is embedded with another key information, the key information is provided to the user terminal B simultaneously with or separately from the provision of the work α. When sending the updated copyright information to the copyright management center A, it is better to use encryption technology or the like to ensure security.

In the case of FIG. 2C, since the updating process and the embedding process are performed by the copyright management center A, the updated copyright information is embedded as in the basic operation of the present system example shown in FIG. The copyrighted work α and the key information may be provided to the user terminal B.

In any of the cases (a) to (c) in FIG. 2, the copyright information update processing means 9 and 11 are designed to prevent the copyright information β from being rewritten by anyone. It is preferable to restrict the update processing of the copyright information β by using a password or other authentication means so that only the right holder or a person authorized by the copyright owner can rewrite the copyright information β.

The key information γ necessary for the extraction process Pc of the copyright information β at the user terminal B is shown in FIG.
In the case of (c), it is obtained by the method described above. FIG.
(A), the copyright information β is embedded P3
Is performed at the user terminal B, and the key information γ can be acquired within the user terminal B, so that the provision of the key information γ is unnecessary.

[0071]

As described above, the present invention embeds copyright information in a copyrighted work and integrates it with the copyrighted work. In order to extract the copyright information from the copyrighted work, a digital watermarking technique that requires special processing is used. Basically, it enables the use of a copyrighted work only when the content of the embedded copyright information satisfies the usage conditions, and it is difficult to extract the copyright information from the copyrighted work and falsify it. The protection of things is assured.

[Brief description of the drawings]

FIG. 1 is an overall configuration block diagram illustrating an example of a system according to an embodiment of the present invention.

FIGS. 2A and 2B are block diagrams of a system configuration at the time of updating copyright information in the above embodiment; FIG. 2A shows a case where both updating and embedding of copyright information are performed by a user terminal; (C) shows a case where both the updating process of the copyright information and the embedding process are performed by the copyright management center, respectively.

FIG. 3 is an overall operation flowchart illustrating an example of a method according to an embodiment of the present invention.

FIG. 4A is a flowchart showing a copyright information embedding processing procedure, and FIG. 4B is a flowchart showing a copyright information extraction processing procedure.

FIG. 5 is a correlation table of copyright information used in the above and usage processing.

FIG. 6 is an operation flowchart in a case where usage is restricted by a user ID in the above.

[Explanation of symbols]

 α: copyrighted work β: copyright information γ: key information γ1: embedding position γ2: change amount A: copyright management center B: user terminal M: storage medium N: network T: correlation target table 1: storage means 2 ... Copyright information embedding processing means 3 ... Output processing means 4 ... Input processing means 5 ... Copyright information extraction processing means 6 ... Use condition processing means 7 ... Copyright information determination processing means 8 ... Use processing means 9, 11 ... Copyright information Update means 10: copyright information embedding processing means P1, Pa: decomposition processing P2, Pb: orthogonal transformation processing P3: embedding processing P4: inverse orthogonal transformation processing P5: reconstruction processing Pc: extraction processing

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Claims (21)

[Claims] 1. A work management method characterized in that in use management of a work, copyright information in which use conditions are arbitrarily set is embedded in the work and various restrictions are imposed on the use. The management side includes a step of embedding copyright information integrally in the copyrighted work, and a step in which the copyrighted information in which the copyright information is embedded is appropriately transmitted to the embedded copyright information through information transmission means. Providing the key information necessary for extraction to the user side simultaneously or separately; extracting the copyright information from the work based on the provided key information; and Determining a use condition that has been arbitrarily set in advance from the information; executing a usable process in a possible range if available; rejecting the use process and issuing a warning if use is prohibited; A work management method characterized by sequentially executing and. 3. The work management method according to claim 1, wherein the work includes an image such as a still image and a moving image, and audio. 4. The copyright information is roughly classified into usage conditions such as permission or non-permission for each usage type or all usage types, a usable period, and usage restrictions by a user ID. The method for managing a copyrighted work according to claim 1, 2 or 3, wherein 5. The presence or absence of the use permission is determined for all the use types that permit execution of all the use processes and for all use types that issue a warning and reject execution of all the use processes. If there is no usage license, and if there is a usage license for each usage type that allows execution of the usage process of the corresponding usage type, a usage type with a usage license is issued, and a warning is issued, and the usage process of the corresponding usage type is issued 5. The work management method according to claim 4, further comprising: classifying a check result into a use type without a license when there is a license for each use type for which the use is rejected. 6. The use type is a display use in the case of an image, an audio device output in the case of a sound, a copy of a writable storage medium, another user transfer, and the like. Copyright management method described in. 7. The usable period is determined as follows: the use time when the execution of the use process is permitted is within the range of the usable period, and the use time when the execution of the use process is refused is out of the range of the usable period. 7. The work management method according to claim 4, wherein items are classified. 8. The use restriction by the user ID includes the use of a user ID that permits execution of the use process, the use of an ID other than the user ID that rejects the execution of the use process, The work management method according to claim 4, 5, 6, or 7, wherein the work is classified. 9. The use restriction check by the user ID includes the step of judging whether there is a use restriction by the user ID, and if not, the step of checking another use restriction. Inputting the ID from the user, determining whether the user ID matches the user ID of the copyright information, issuing a warning and rejecting the use processing if the two do not match. 9. The method according to claim 8, wherein the step of performing a use restriction check is sequentially performed. 10. When the use is prohibited, the user updates the copyright information by a new process.
On the management side, the copyright information is embedded, or on the user side,
3. The copyrighted work management method according to claim 2, wherein a new copyright information embedding process is directly performed to make it available. 11. When the use is prohibited, the copyright information is newly updated on the user side, and the management side performs the copyright information embedding process and performs the enabling process. The work management method according to claim 2. 12. When the use is prohibited, the management side performs a new copyright information update process,
3. The copyrighted work management method according to claim 2, wherein the management side performs copyright information embedding processing and makes it available. 13. The method according to claim 1, wherein the integral embedding employs a digital watermarking technique.
8. The work management method according to 8, 9, 10, 11 or 12. 14. The information transmission means according to claim 1, wherein the information transmission means is a storage medium or a network.
The work management method described in 8, 9, 10, 11, 12, or 13. 15. The work management method according to claim 14, wherein the storage medium includes a CD-ROM, a CD, a DVD-ROM, a magneto-optical disk, an FD, and the like. 16. The network may be the Internet, an intranet, an extranet,
CON, CDN, LAN, ISDN, VAN, CATV
15. The work management method according to claim 14, comprising a communication network, a virtual private network, a telephone line network, a mobile communication network, a satellite communication network, an optical communication network, and the like. 17. A recording means for recording a copyrighted work and copyright information, a copyright information embedding means for embedding the copyright information in the copyrighted work read out from the recording means, and a copyright information embedded processing means. A work management center having output processing means for freely transmitting the copyrighted work, information inputting means for transmitting and inputting the copyrighted work, and a use condition of the copyright information of the input copyrighted work. Copyright information determination processing means for performing a check processing, use processing means for performing use processing within an available range based on the check result,
A copyright management system comprising: a user terminal having: (a) a user terminal and the copyright center; 18. Copyright information judging means of a user terminal includes: copyright information extracting processing means for extracting copyright information embedded from a copyrighted work; and usage condition processing means for checking usage conditions based on the copyright information. The copyrighted work management system according to claim 17, comprising: 19. Copyright information determination processing means of the user terminal, copyright information update processing means for indirectly newly updating copyright information stored in the storage means of the copyright management center,
Separately, the copyright information to be newly updated is directly embedded in the copyrighted work itself, and copyright information embedding processing means are connected to the copyright information embedding processing means, respectively, to enable use in any case where use is prohibited. Item 18. The copyrighted work management system according to item 17 or 18. 20. A copyright information determination processing means of the user terminal, which is connected to copyright information update processing means for indirectly newly updating copyright information in order to remove use prohibition or change use conditions, and connects the network. 18. The copyright information embedded in the copyrighted work stored in the storage means of the copyright management center via the update information can be newly embedded in the copyrighted work by the copyright information embedding processing means. 20. The copyrighted work management system according to 18 or 19. 21. A storage means of the copyright management center is connected to a copyright information update processing means for newly updating copyright information, so that the copyright information stored in the storage means can be directly updated. 21. The copyrighted work management system according to claim 17, 18, 19, or 20.