JP2003263521A - Device for creating and reproducing secondary production - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for creating and reproducing a secondary production capable of conducting more secure and easier management, than a conventional device, of a right of a writer of a primary production relating to the primary production included in the secondary production in creating and reproducing the secondary production. <P>SOLUTION: This device (a computer 12 of a user) reproduces the secondary production for reproducing the secondary production created by utilizing the primary production, extracts primary production data 22 and an added part 26 from a secondary production file 30 including primary production data 22 presenting the primary production and the added part 26 for presenting edited content edited to the primary production by a computer 11 of an editor, and composes data presenting the secondary production on the basis of the extracted primary production data and added part 26, and reproduces. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary work creation and reproduction device suitable for use in creating or reproducing a secondary work created by recreating a primary work (original work). Regarding

[0002]

2. Description of the Related Art Currently, in distribution of digital content copyrighted works on the Internet, a mechanism for preventing unauthorized use of the copyrighted works is being established. However, there are some problems when it comes to the mechanism of secondary use of copyrighted works.
One of the issues is the issue of editing a copyrighted work. Basically, when a work is edited, the original work (hereinafter referred to as the primary work) changes its form to become new content (hereinafter referred to as the secondary work). Then, the copyright in the primary work will continue to exist in the secondary work. Since the editor is responsible for the distribution of this secondary work, it falls outside the control of the author of the primary work. for that reason,
As an author of primary works, there are always concerns about illegal distribution of secondary works. This can be said to be one of the factors that hinder the business development due to the secondary use of copyrighted works.

That is, a secondary work, which is a creation using another work, requires the permission of the original author regarding its use, except for personal use, and the original work is limited to the permitted range. Creations are made using crops. In creating a secondary copyrighted work using a computer, new content (secondary copyrighted work) is created by directly editing the data showing the original copyrighted work, that is, the original content itself. In addition, management of the edited secondary work goes beyond the responsibility of the author of the primary work and becomes the responsibility of the editor who is the creator of the secondary work.
Therefore, it is often difficult for the author of the primary work to manage the copyright of the primary work included in the secondary work.

For example, the author of the primary copyrighted material performs an encryption process on the data representing the primary copyrighted material using an encryption key, and passes the encryption key to a specific editor, thereby It is possible to control usage. However, if the encryption applied to the secondary work has been broken, or if the editor's management of the copyright is insufficient, everything including the parts owned by the author of the primary work is free. It is also possible that it will be in the state of.

Further, since the new content created by editing is one content, but the content of the original content and the content of editing are mixed, it is difficult to clarify the boundary between the rights. .

On the other hand, even a person who creates a secondary work receives a license of the work from the primary author,
It is not easy to manage the rights relating to the primary work contained in the secondary work when it is provided to the user who reproduces and uses the secondary work, and it is not easy to manage those rights. It was required to be able to manage.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and when the secondary work is created or reproduced, the primary work contained in the second work is An object of the present invention is to provide a secondary work creation and reproduction device that can more reliably or more easily manage the rights of such a primary work author, etc. as compared with the conventional art. further,
It is an object of the present invention to provide a secondary work creation and reproduction method, a program, and a recording medium as another aspect.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is an apparatus for reproducing a secondary work created by using a primary work. By the extracting means for extracting the primary copyrighted material data and the additional data from the secondary copyrighted material data including the primary copyrighted material data indicating the product and the additional data indicating the edited content made to the primary copyrighted material, It is characterized by further comprising a synthesizing means for synthesizing data indicating a reproducible secondary copyrighted work based on the extracted primary copyrighted work data and the additional data. According to a second aspect of the present invention, the primary work data is encrypted data, and the extracting means acquires a key used for decrypting the primary work data using a recording medium or a communication line. And a decryption unit for decrypting the primary copyrighted-material data using the acquired key.

According to a third aspect of the present invention, the primary copyrighted data and the additional data are data encrypted by using different encryption keys, and the extracting means uses a recording medium or a communication line. A means for obtaining a key used for decrypting the primary copyrighted data and a key used for decrypting the additional data, and a decrypting means for decrypting the primary copyrighted data and the additional data by using each obtained key are provided. It is characterized by being According to a fourth aspect of the present invention, the secondary work data is encrypted data, and the extracting means uses a key to decrypt the secondary work data using a recording medium or a communication line. It is characterized by having a means for acquiring and a decoding means for decoding the secondary work data using the acquired key.

According to a fifth aspect of the present invention, there is provided an apparatus for creating a secondary copyrighted work by using a primary copyrighted work, which shows a primary copyrighted work, and is encrypted primary copyrighted work data. Input means for inputting, a key acquisition means for acquiring a key used for decrypting the primary copyrighted material data using a recording medium or a communication line, and a decrypting means for decrypting the primary copyrighted material data using the acquired key An editing unit that edits the decrypted primary copyrighted material data; an additional data creating unit that creates additional data indicating the editing content made to the primary copyrighted material by the editing unit; A secondary work data creator that creates secondary work data, which is data indicating a secondary work, by combining the encrypted first work data and the additional data created by the additional data creating means. Characterized in that it comprises and.

According to a sixth aspect of the present invention, there is provided an encryption processing means for performing an encryption process on at least one of the additional data and the secondary work data. The invention according to claim 7 is characterized in that the additional data is represented by a difference in pixel value or acoustic data value between the primary copyrighted material data and the secondary copyrighted material data. The invention according to claim 8 is characterized in that the additional data is expressed by a description showing an editing procedure by the editing means. According to the invention of claim 9, the additional data gives a description of the editing content by which the data amount of the primary copyrighted material data by the editing means is changed, and a change corresponding to the description with respect to the primary copyrighted material data. It is characterized in that it is expressed by the difference between the pixel value or the acoustic data value of the thing and the secondary work data.

According to a tenth aspect of the present invention, the description about the change of the state is expressed based on the change detected between the primary work data before editing and the secondary work data after editing. It is characterized by being In the invention according to claim 11, the description of the change in the state is made to the editing contents by the editing means for changing the data amount of the primary copyrighted material data and coordinates of part or all of the primary copyrighted material data. It is characterized in that it includes a description showing a process of conversion.

According to a twelfth aspect of the present invention, a key for decrypting the cipher made by the encryption processing means in response to a request received via a communication line is subjected to a predetermined charging process and then a request source. It is characterized in that it is provided with a charging means to be provided to.

The invention according to claim 13 is a method for reproducing a secondary work created by using a primary work, which comprises primary work data indicating a primary work and primary work data. Based on the extraction process for extracting the primary copyrighted work data and the additional data from the secondary copyrighted work data including the additional data indicating the edited content made on the basis of the primary copyrighted work data and the additional data extracted in the extraction process. And a synthesizing process for synthesizing data indicating a reproducible secondary work. The invention according to claim 14 is a method for creating a secondary copyrighted work using a primary copyrighted work, which indicates a primary copyrighted work, and which inputs encrypted primary copyrighted work data. An input process, a key acquisition process for acquiring a key used to decrypt the primary copyrighted data using a recording medium or a communication line, a decryption process for decrypting the primary copyrighted data using the acquired key, and a decryption process. An editing process for editing the encrypted primary copyrighted material data, an additional data creating process for creating additional data indicating the editing content made to the primary copyrighted material in the editing process, and an encryption process before being decrypted And a secondary work data creating process of creating secondary work data that is data indicating a secondary work by combining the created primary work data and the additional data created in the additional data creation process. Characterized by That.

According to a fifteenth aspect of the present invention, there is provided a program used for reproducing a secondary work created by a computer using a primary work, wherein the primary work data indicating the primary work and the primary work data are stored. Extraction procedure for extracting the primary copyrighted material data and the additional data from the secondary copyrighted material data including additional data indicating the edited contents made to the copyrighted material, and the primary copyrighted material data and the additional data extracted by the extraction procedure. And a synthesizing procedure for synthesizing data indicating a reproducible secondary work based on The invention according to claim 16 is a program used to create a secondary copyrighted work by using a primary copyrighted work by a computer, which shows a primary copyrighted work, and is encrypted primary copyrighted work data. , A key acquisition procedure for acquiring a key used to decrypt the primary copyrighted material data using a recording medium or a communication line, and a decryption procedure for decrypting the primary copyrighted material data using the acquired key. And an editing procedure for editing the decrypted primary copyrighted material data, an additional data creating procedure for creating additional data indicating the edit content made to the primary copyrighted material in the editing procedure, and a pre-decoding processing The secondary copyrighted data that is the data indicating the secondary copyrighted material is created by combining the encrypted primary copyrighted material data and the additional data created in the additional data creation procedure. Is a program for executing the data creation procedure on the computer.

According to the invention of claim 17, the primary work data is converted from the secondary work data including the primary work data indicating the primary work and the additional data indicating the editing contents made to the primary work. And the additional data, and a synthesizing procedure for synthesizing data indicating a reproducible secondary work based on the primary literary work data and the additional data extracted in the unloading process, It is a computer-readable recording medium in which a program used for reproducing a secondary work created by using a work is recorded. The invention according to claim 18 indicates a primary work and is used for decrypting the primary work data using an input procedure for inputting encrypted primary work data and a recording medium or a communication line. The key acquisition procedure to acquire the key, the decryption procedure to decrypt the primary copyrighted material data using the acquired key, the editing procedure to edit the decrypted primary copyrighted material data, and the editing procedure to create the primary copyrighted material A combination of the additional data creation procedure that creates additional data indicating the edited content, the encrypted primary copyrighted data before decryption processing, and the additional data created in the additional data creation procedure. And a secondary copyrighted material data creation procedure for creating secondary copyrighted material data that is data indicating a secondary copyrighted material, and is used to create a secondary copyrighted material using a primary copyrighted material by a computer. A computer-readable recording medium recording a program.

In the present application, the term "work" means all that is created by a work, and even when interpreted in the narrowest sense, it expresses creatively the idea or emotion defined in the Copyright Act. It is meant to include all that belong to the range of literary, academic, art, or music. In addition, a primary work (original work) means a work used when creating (creating) a second work, and it is created by using the work such as the original work or other original work. Other secondary works that have been created are also included. In addition, the term "secondary work" means that the work is created (or created) by recreating (arranging) the work, and even in the narrowest interpretation, the work is translated and arranged. , Or a work created by transforming, adapting, adapting to a movie, or adapting it.

The primary work and the secondary work which are mainly processed by the present application are works which are digitized into a form that can be processed by a computer. The digitization, input method and output method , And the input or output form includes all forms processed or input / output by the computer or peripheral devices of the computer. Specific examples of digitized works include images (still images, moving images) and audio signals that can be recorded on a predetermined recording medium or processed so that they can be transmitted via a communication line, or a homepage is described. It is character data or the like that describes processing procedures such as source data, scripts, and programs.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining the flow of information in the secondary work creating and reproducing apparatus of the present invention.

In FIG. 1, a computer 10 of a primary author, a computer 11 of an editor (secondary author), and computers 12 to 13 of users are connected via a network (not shown) such as the Internet. Computer operated by a primary author, an editor, and a user, respectively. In this case, the primary author is the author of the primary copyrighted material data 22, which is the primary copyrighted material of the image or sound data. The editor is the author of the secondary copyrighted material, which uses and edits the primary copyrighted material data 22 to create a secondary copyrighted material and provides it to each user as the secondary copyrighted material file 30.

The computer 10 of the primary author writes the primary copyrighted work file 22 encrypted by the encryption A23 (or encrypted by the encryption key A23 (hereinafter, the same)) to the computer 11 of the editor. It functions as an information providing device that provides the key 21 for releasing the encryption by the encryption A23 in response to a request from the editor or each user.

The computer 11 of the editor has a function as an editing device for editing the primary work data 22 and also converts the secondary work data obtained by editing the primary work data 22 into the primary work data 22. The data encrypted by the encryption A23 and the addition unit 2 which is the data showing the edited contents
6 (corresponding to additional data in claims) and data encrypted by encryption B27 (second copyrighted work file) 2
The secondary copyrighted work file 30 in which 8 is encrypted with the encryption C29 is created by the function as the editing device, and is provided to each user by the function as the information providing device.
The editor's computer 11 also has a function of providing a key 25 for releasing the encryption by the encryption B27 and the encryption C29 in response to a request from each user.

The computer 12 to 14 of the user is the computer 11 of the editor or the computer 1 of another user.
It has a function as a reproducing device for accessing 2 to 14 to acquire the secondary copyrighted work file 30. The computer 12 to 14 of the user also has another function as a reproducing device, and the encryption A2 used by the secondary copyrighted work file 30.
Cryptography according to C.3, Cryptography with B27, and C29
It has a function of requesting the computer 10 or the computer 11 to obtain the keys 21 and 25 for deciphering the encryption, and decrypting the encryption by the obtained keys 21 and 25. The users' computers 12-14 are
Further, the function of synthesizing the primary work data 22 included in the secondary work file 30 and the adding unit 26, and the secondary work data as a result of editing the primary work obtained as a result of the combination are displayed. , Has a function of outputting such as printing.

In FIG. 1, the primary copyrighted work file 24
Flow (S10) and the flow of the secondary work file 30 (S
12, S15, S18) (Primary work data indicating a primary work and secondary work data indicating a second work are multimedia data including image (still image or moving image) data, sound data, or character information. , Which is referred to as content), is indicated by a thick solid line, the flow of the license request for deciphering the encryption A (S11, S13, S16, S19) is indicated by a broken line, and the flow of the license request for deciphering the encryption B, C ( (S14, S17, S20) are represented by chain lines.

Next, with reference to FIG. 2, the flow of the reproduction processing of the contents in the secondary copyrighted work file 30 in the user's computer 12 shown in FIG. 1 will be described. In this case, as described with reference to FIG. 1, the computer 10 of the primary author functions as the information providing device 100, the computer 11 of the secondary author functions as the information providing device and the editing device 200, and Computer 1
2 functions as the reproducing apparatus 300. Also,
The information providing apparatus 100 has a charging processing function 400, and the information providing apparatus / editing apparatus 200 has a charging processing function 401.

When the user executes the content reproducing event (S30), the reproducing apparatus 300 requests the information providing apparatus / editing apparatus 200 for the encryption C release key (S3).
1). The information providing apparatus / editing apparatus 200, after performing the charging process required for the license for releasing the encryption C by the charging processing function 401, transmits the encryption C release key to the reproducing device 300 (S32). The playback device 300 uses the acquired code C
The secondary copyrighted work file 30 is decrypted by using the release key of No. 2, and the data of the decrypted secondary copyrighted work file 28 is obtained (S33). Here, the content of the encryption process of the primary copyrighted material data 22 included in the secondary copyrighted material file 30 (encryption A)
Then, it becomes possible to know the information such as the acquisition destination of the release key and the content of the encryption processing (encryption B) of the adding unit 26.

Next, the reproducing apparatus 300 is the information providing apparatus /
Request the encryption B release key from the editing device 200 (S
34). The information providing apparatus / editing apparatus 200 transmits the deciphering key for the encryption B to the reproducing apparatus 300 after performing the accounting processing required for the license for deciphering the encryption B by the accounting processing function 401 (S35). The playback device 300 uses the acquired decryption key of the encryption code B to decrypt the secondary copyrighted material file 2
The encryption processing by the encryption key B performed by the adding unit 26 in 8 is decrypted to obtain the adding unit 26 (S33).

Next, the reproducing apparatus 300 is the information providing apparatus 1
A request for the key for canceling the encryption A is issued to 00 (S37). The information providing apparatus 100 performs the charging processing required for the license for the encryption A cancellation by the charging processing function 400, and then transmits the encryption A cancellation key to the reproducing apparatus 300 (S38).
The reproducing device 300 decrypts the primary copyrighted-material data 22 by deciphering the encryption A based on the encryption A performed on the primary copyrighted-material data 22 using the decryption key of the encryption A. Then, based on the data of the primary copyrighted material data 22 and the data of the addition unit 26, the secondary copyrighted material data is combined to reproduce the content (S3).
9).

Next, a configuration example of the editing device 201 in the information providing device / editing device 200 shown in FIG. 2 will be described with reference to FIG. The editing device 201 is a device that edits a primary copyrighted work in a secure environment and creates a secondary copyrighted work file 30 including a primary copyrighted work 22 and an adding unit 26 by editing. Content created temporarily during editing is deleted without being saved after editing.

The primary copyrighted material (or primary copyrighted material data) 22 input to the editing device 201 is a content having a copyright. In many cases, it is often encrypted so that the copyright is not infringed, for example, as shown by the code A23 in this figure. The secondary copyrighted material file 30 output from the editing device 201 is a file including the primary copyrighted material 22 and the addition unit 26. The reproduction device 300 can reproduce by combining the primary work 22 and the addition unit 26. The content cannot be reproduced with the information of only the adding unit 26. Additional part 2
Reference numeral 6 is data in which the reproduction device 30 describes what is necessary to create a secondary work from the primary work 22.

The descrambling license 501 means permission for editing or reproducing a literary work. When the deciphering license 501 is encrypted, the deciphering key provider is accessed through, for example, a communication line to perform a predetermined charging process. By inputting the information necessary for the above, it becomes possible to acquire the method for canceling the encryption.

The descrambling function 210 is a function for descrambling the encrypted work. Editing function 220
Is a function for editing the content. Editing function 220
In order to prevent infringement of rights, it is necessary to have a function capable of editing in a secure environment in which, for example, content that is temporarily created during editing is erased without being saved after editing is completed.

The additional part description function 230 is a function of creating a description that allows the reproduction side to create a secondary work from a primary work. The additional part description function 230 also needs to be processed in a secure environment in which the right is not infringed. Editing function 220 and additional part description function 23
The value of 0 determines the content of the addition unit 26 indicating the edited content of the primary copyrighted material 22, and the encryption function 240 performs encryption processing as necessary.

The encryption function 240 is a function of encrypting the addition unit 26 or the secondary copyrighted work file 30 when it is desired that the right of the addition unit 26 or the secondary copyrighted work file 30 is not violated. In the present embodiment, the encryption by the encryption B is performed on the addition unit 26, or the secondary work file 28 including the additional work 26 encrypted by the encryption B and the primary work 22 encrypted by the encryption A is created. On the other hand, it is possible to further perform an encryption process using an encryption C different from the encryption B.

Next, the structure of the reproducing apparatus 300 shown in FIG. 2 will be described with reference to FIG. The playback device 300 is
From the primary work 22 to the secondary work 50 using the addition unit 26
It is a device that assembles and reproduces a secondary work. Even in the reproducing device 300, it is necessary to reproduce in a secure environment in which the right is not infringed. That is, it is desirable that the reproduced content has a function as a function to prevent the right from being infringed, for example, prohibiting copying in a form reproducible to another computer.

The descrambling function 310 obtains the descrambling license 60 for the ciphers A, B, and C, decrypts each file, and decrypts the primary copyrighted material 22 and the addition unit 26 for the synthesizing function 320. Pass each data of. Next, the synthesizing function 320 is used to edit the editing function 22 of the editing device 201 shown in FIG.
By reproducing the same edited contents as those made by 0, the primary work 22 and the secondary work 50 are assembled.

Next, with reference to FIG. 5, a configuration example of the additional part description function 230 of FIG. 3 will be described. The additional part description function 230a shown in FIG. 5 creates the additional part 26a by the additional part creation method called the final form difference description method. In this case, the addition unit 26a corresponding to the addition unit 26 in FIG. 1 and the like includes a state change description 51 and a difference description (compression) 52b. The difference description 52a (or the difference description (compression) 52b obtained by compressing the difference description) is the difference between the pixel value in the case of an image and the sound data value in the case of a sound and the comparison target.

Next, the state change detection function 231 will be described. When a process that changes the data amount such as the size of an image, the number of frames, or the number of samples occurs due to editing, it becomes impossible to simply take the difference between the original content and the edited content. State change detection function 231
Is to detect that the state changes due to such an operation that cannot simply take the difference (which will be referred to as state change), and to change the target of the difference according to the change. It is a function to record the information of. That is, the state change detection function 231 detects the state change between the primary work and the finally created secondary work (the state in the middle of editing is irrelevant), and determines the state of the primary work as the secondary work. It is a function to create a description that shows the information necessary to change the state of an object. The description created should be the minimum by which the state of the primary work can be made the same as the state of the secondary work.

It should be noted that an operation capable of obtaining a difference is not called a state change. That is, in the present application, the “state change” simply means a change such that the difference between the two contents (primary work and secondary work) cannot be obtained.

Major changes in the state are changes in the number of data and changes in the expression bit. For example, if the vertical and horizontal doubling of the screen size changes, the number of data will be quadrupled, and there will be data in which there is no target for the difference. Therefore, the change in screen size is a change in state. The change in the number of frames is a story in a moving image, but if the primary work has contents such that there are 15 frames per second, the editor tries to increase the number of frames to 1 frame between frames. If frames are created one after another and a secondary copyrighted work of 30 frames per second is created, there will be data in which there is no target for difference for the newly created frames. Therefore, the change in the number of frames also changes.

The change in the number of samples is the same as the change in the number of frames in audio. The change of the expression bit is a case where a pixel value or the like is expressed in 8 bits (256 gradations), but is changed to 6 bits (64 gradations) after being edited. In some cases,
Since the difference cannot be obtained simply, the state changes. However, changes in RGB (three primary colors), brightness, etc. do not change the number of data, but only the values, and are not state changes. For example, when the process of changing the color information such as RGB and luminance is performed a plurality of times in the editing work, the color information is changed one after another. However, in the present embodiment, the color information is one of the regular expression bits. By utilizing the fact that the numerical values in 2 are only changed, it is possible to completely express a secondary work by taking the difference between the first and last color information without depending on the change of color information in the process. This is one of the features.

The state change detection function 231 does not necessarily have to detect all state changes at each editing stage. Furthermore, instead of describing the entire history,
It is also possible to compare the states of the primary work and the secondary work and to describe only the description necessary for changing the state of the primary work to the state of the secondary work. However, all state changes may be detected at each editing stage, or the detected information may be recorded as a simple history. For example, as the editing operation, the screen size is set to 2 vertically and horizontally
Double, then double the height and width, and then length and width 1
If it is set to / 4, the screen size change will be the same as the original size. In the present embodiment, since the purpose is to change the state of the primary work to the state of the secondary work, nothing is written in the state change description in this example. In other words, it is sufficient to describe the state change with the final form, regardless of the state change during editing. In order to realize that, for example, when creating a state change description of a primary work and a final work of a secondary work, the state change is detected at each editing stage, and Select only the state changes that are finally needed, or set multiple state changes to 1
A description of the state change can be created by editing such that they are put together. By doing so, the state change description does not describe all the state changes performed in the editing process, but the minimum necessary description. As a result, it is possible to prevent unnecessary processes from being increased when restoring.

In the case shown in FIG. 5, the state change detection function 231
Detects what kind of operation should be performed in order to change the state of the primary work to the state of the completed editing operation, and describes the operation to be performed as the state change description 51. It is not necessary to detect all operations that cause a state change during editing. The editing operation completed product 50 is the same image or sound data as the secondary work. State change function 232
Is a function for changing the state of the primary work to a state in which a difference with the edited operation completed article 50 can be obtained based on the state change description 51.

The difference detection function 233 is used for the editing operation completed product 5.
When the state of the primary work 22 becomes equal to 0, the one after the state change of the primary work 22 and the editing operation completed product 50
This is the function to detect the difference of. The difference detection function 233
The detected difference is described in the difference description file 52a.

The illegal operation detection function 234 is a function for preventing the primary work from being taken out of the secondary work as it is by an illegal operation. For example, when all the pixel values of the secondary work are fixed values such as 0, that is, when an image that is painted with the same color as the secondary work is created, or a plurality of colors with a fixed pattern are used. If you create an image that is filled with, the difference itself becomes the same data as the primary work, or by performing a simple editing operation on the data representing the difference, it is the same as or almost the same as the primary work. It becomes possible to obtain the same image. The unauthorized operation detection function 234 is provided as a countermeasure against such a case. If the difference and the primary work are the same thing, the difference will be out of the control of the author of the primary work, which is a problem. Therefore, the unauthorized operation detection function 234 detects the similarity between the difference and the primary work and deletes the data when it is determined to be similar. The tampering detection function 234 uses the difference description 5
2a and the primary copyrighted material 22 are compared to detect whether or not an unauthorized operation has been performed, and if it is determined that they are similar, all the data created so far are deleted (61).
To do.

The compression function 235 is a function for performing compression because the difference (difference description 52a) has redundancy as in the case of images and sounds, and therefore compression is possible.

Further, FIG. 6 shows the additional part description function 23 of FIG.
The configuration of the playback device 300a corresponding to the configuration example of 0a is shown. 6, the same components as those shown in FIGS. 4 and 5 are designated by the same reference numerals. Synthesis function 320 of FIG.
In this case, the state change function 321 and the decompression function 322
And a difference synthesizing function 323. The state change function 321 has the same function as the state change function 232. The decompression function 322 is a function for restoring the compressed difference description 52b. Difference synthesis function 32
A function 3 creates a secondary work 50 from the primary work after the state change using the difference description 52a.

The procedure for creating an additional part by the additional part description function 230a in FIG. 5 is as follows. The state change detection function 231 compares the primary work 22 and the editing operation completed product 50 to create a state change description 51. In the state change function 232, the state of the primary work 22 is edited using the state change description 51.
Set to the same state as 0.

The difference detection function 233 detects the difference between the pixel value or the acoustic data value between the editing operation completed product 50 and the state-changed primary copyrighted material 53, and creates a difference description 52a. In the unauthorized operation detection function 234, the difference description 52a and the primary work 22 are compared with each other for similarity. When it is determined that they are similar, all the data created so far are deleted. The compression function 235 compresses the difference description 52a. State change description 51 and compressed difference description 52b
The additional part file 26a is created from.

On the other hand, the reproducing procedure by the reproducing apparatus 300a shown in FIG. 6 is as follows. The state change function 321 uses the state change description 51 to match the state of the primary work 22 to the same state as the secondary work 50. Extension function 3
At 22, the compressed difference description 52b is restored. The difference composition function 323 uses the difference description 52a to create and reproduce the secondary work 50 from the primary work 53 after the state change.

The features, advantages, and effects of the final form difference description system having the configuration described with reference to FIGS. 5 and 6 are as follows. According to this configuration, since the state change description is only the minimum state change from the primary work to the final form,
Playback load is not significantly affected by the number of editing steps. Moreover, since the number of editing steps is hardly affected, the amount of information is not diverged. Also, although it depends on the compression method of the difference description, the load of the reproducing operation is basically light.

Next, another example of the configuration of the additional part description function 230 of FIG. 3 will be described with reference to FIG. The additional part description function 230b shown in FIG. 7 creates the additional part 26b by an additional part creation method called an edit procedure description method. In this case, the addition unit 26b corresponding to the addition unit 26 in FIG.

The edit operation event 62 corresponds to one step of the edit operation performed by the edit function 220 shown in FIG. The edit operation procedure description function 236 is a function for describing the edit operation content in the adding unit 26b so that the reproducing apparatus 300 can perform the same edit operation as the edit operation performed by the edit function 220.

The procedure for creating the additional part is as follows. During editing, each time an edit operation event 62 occurs, the edit operation procedure description function 236 causes the edit operation content to be added (intermediate).
Described in the file 54. All the operations performed in the editing function 220 are described in the finally created addition unit 26b.

On the other hand, in the reproducing procedure, in the reproducing device having a function capable of performing the same operation as the editing function 220, the primary copyrighted material 22 is re-edited and reproduced by the reproducing device based on the description of the adding section 26b.

The features, advantages and effects of the editing procedure description system are as follows:
This is a method in which the reproduction device reproduces the secondary work by re-editing it in the same manner as the editing device. This is an effective method for editing operations with a small number of steps.

Next, with reference to FIG. 8, another configuration example of the additional part description function 230 of FIG. 3 will be described. Figure 8
The additional part description function 230c shown in (1) creates the additional part 26c by the additional part creation method called the state change / coordinate conversion description type difference description method. In this case, the addition unit 26c corresponding to the addition unit 26 in FIG.
And a difference description (compression) 52d. Difference description 52c (or difference description compressed)
52d) is the difference between the pixel value in the case of an image and the comparison value of the acoustic data value in the case of sound. The same components as those shown in FIG. 5 are designated by the same reference numerals.

In this configuration, coordinate conversion means coordinate conversion such as parallel movement, rotation, enlargement, reduction, and the like. When the coordinate conversion is performed, the content itself changes, but the previous information remains somewhere in the content. Coordinate transformation is not a state change in this application. Therefore, unlike the case of the state change, the difference can be obtained without considering the coordinate conversion. However, the difference can be reduced by considering the coordinate conversion. Therefore, the difference value is further reduced by recording the editing operation related to the coordinate conversion.

The state change / coordinate conversion description function 238 is a function for describing the operation contents in the state change / coordinate conversion description (intermediate) 57 every time a state change or coordinate conversion is performed in the editing work. State change / coordinate conversion description (intermediate)
Reference numeral 57 is intermediate data, and the final data is the state change / coordinate conversion description 55.

The state change / coordinate conversion function 238 uses the state change / coordinate conversion description 55 to change the primary work to the state change / coordinate converted primary work 56 with a small difference from the secondary work 50. It is a function.

The procedure for creating an additional part with the configuration shown in FIG. 8 is as follows. Every time you perform a state change / coordinate conversion operation during editing, the contents are described as state change / coordinate conversion description (intermediate)
7, and finally, the state change / coordinate conversion description 55 in which all state change / coordinate conversion operations are described is created. The state change / coordinate conversion function 238 uses the state change / coordinate conversion description 55 to change the state of the primary work 22 to the same state as the state of the editing operation completed product 50 while applying the coordinate conversion, and the state after the coordinate conversion is performed. Make it a copyrighted work 56.

The difference between the pixel value or the sound data value of the edited operation completed article 50 and the state-change / coordinate-converted primary copyrighted article 56 is detected, and a difference description 52c is created. In the unauthorized operation detection function 234, the difference description 52c is compared with the primary work 22 for similarity. When it is determined that they are similar, all the data created so far are deleted. Compression function 2
At 35, the difference description 52c is compressed. And
State change / coordinate conversion description 55 and difference description (compression) 52d
Then, the adding unit 26c is created.

On the other hand, the reproducing procedure is as follows. In the configuration as shown in FIG. 6, the state change / coordinate conversion function (same arrangement as the state change function 321 of FIG. 6) is used to add the coordinate conversion using the state change / coordinate conversion description 55. The state is adjusted to the same state as the secondary work 50. Difference description 5 that was compressed in the decompression function
Put back 2d. Difference description 5 in the difference composition function
2c is used to create and reproduce the secondary work 50 from the primary work 56 after state change / coordinate conversion (same arrangement as the primary work 53 after state change in FIG. 6).

Features of the editing procedure description method with this configuration
Since the advantages and effects describe all state changes / coordinate transformations in the editing process, the difference between the primary work after the state change / coordinate transformations and the editing operation completed product is made small, and the amount of information in the difference description is reduced. It is possible to reduce.

Next, an example of editing by the editing device 201 of FIG. 3 will be specifically described by taking the primary work 22 (FIG. 9) composed of 12 pixel data as an example. FIG. 10 shows an example of the secondary work (editing operation completed product) 50 obtained as a result of editing in the case of this description.

FIG. 11 shows the first copyrighted material 22 from FIG.
It is a figure which shows the data in the middle of editing to the secondary work 50 of 0. In this example, the screen size is doubled vertically and horizontally, the color (numerical value) is changed (the changed portion is shaded and shown), and the portion surrounded by a thick square is rotated 180 degrees (coordinate conversion).
However, an example is shown in which editing is performed to change the color.

FIG. 12 is a diagram for explaining an example of additional part description by the additional part description function 230a of FIG. 5 when the editing shown in FIG. 11 is performed. As the state change, a change of twice the vertical and horizontal screen size is recorded. And the difference description 5
2a is as shown in FIG. Difference description 5 in FIG.
2a is created by the difference value between the value of each pixel after the state change of FIG. 12 and the value of each pixel of the secondary copyrighted work 50 of FIG.

FIG. 14 shows the additional part description function 2 of FIG.
FIG. 16 is a diagram showing an example of the primary work 56 after the state change / coordinate change in the case of using 30c, and FIG. 15 is a diagram showing an example of the difference description 52c by the additional part description function 230c of FIG.

In addition, FIGS. 17 to 20 show an operation example when the editing as shown in FIG. 16 is performed. In the example shown in FIG. 16, as the editing operation, the screen size is doubled vertically and horizontally,
Erase the ball, translate the sun, add tires,
Editing is done to add clouds.

FIG. 17 shows the additional part description function 2 of FIG.
FIG. 18 is a diagram for explaining an editing example by the editing device 201 of FIG. 3 when using 30a, and FIG. 18 is a reproduction device 3 of FIG. 6 when reproducing the secondary copyrighted work file 28a of FIG.
It is a figure for demonstrating the operation example of 00a. FIG. 19 shows
FIG. 9 is a diagram for explaining an example of editing by the editing device 201 of FIG. 3 when using the additional part description function 230c of FIG.
FIG. 20 is a diagram for explaining an operation example of the reproducing device 300 in FIG. 4 when reproducing the secondary copyrighted work file 28b in FIG. In the other drawings, the same reference numerals are given to each other when they have the same configuration, and the same numerals are shown with different alphabetic characters only when they have the corresponding configurations.

As described above, according to the present invention, the primary work can be made to exist in the secondary work as it is in an encrypted state. Further, among the secondary works, since the primary work can be protected by the creator of the primary work, it is possible to provide the primary work which allows the editor to edit without anxiety. In addition, this has the effect of leading to business development in the area of secondary use of copyrighted works.

Further, even if the editor has a low awareness of management of the secondary work and the management is insufficient and the encryption of the secondary work is broken, the primary work can be freely used. There is no. Also, in order to reproduce the edited secondary work, permission of the author of the primary work is required,
It is possible for the author of the primary work to claim the right with respect to the secondary work. In addition, by separating the primary work and the additional part, the editor can claim the right to the additional part. Also, the boundaries of rights will become clear.

The present invention is not limited to the above-described embodiment, and for example, each function is distributed or integrated via a communication line (communication network), or a license for descrambling. It is possible to make changes so that the management of can be centrally managed by one or a predetermined number of servers.
Further, the configuration of the present invention can be configured by a computer and its peripheral devices, and a program executable by the computer. The program can be distributed via a computer-readable recording medium or a communication line.

[0074]

According to the present invention, the secondary copyrighted material data is
Since it is formed from the primary copyrighted material data indicating the primary copyrighted material and the additional data indicating the edited content made to the primary copyrighted material, it is easy to separate the data of the primary copyrighted material from the secondary copyrighted material data. Will be able to manage. In addition, since the primary work data can be included as encrypted data in the secondary work data, the rights of the primary work author, etc. relating to the primary work included in the secondary work Can be reliably managed.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating an information flow according to an embodiment of the present invention.

FIG. 2 is a sequence chart for explaining a reproduction procedure of secondary copyrighted material data in the computer 12 of the user shown in FIG.

3 is a block diagram showing a configuration example of an editing device 201 in the information providing device / editing device 200 shown in FIG.

4 is a block diagram showing a configuration example of a reproducing device 300 shown in FIG.

5 is a block diagram showing a configuration example (additional part description function 230a) of an additional part description function 230 of FIG.

6 is a block diagram showing a playback device 300a (corresponding to the playback device 300 of FIG. 2) corresponding to the configuration example of the additional part description function 230a of FIG.

FIG. 7 is a block diagram showing another configuration example (additional part description function 230b) of the additional part description function 230 of FIG.

FIG. 8 is a block diagram showing still another configuration example (additional part description function 230c) of the additional part description function 230 of FIG.

9 is a diagram showing an example of a primary copyrighted work 22 used for explaining an example of editing by the editing device 201 of FIG.

10 is a diagram showing an example of a secondary literary work 50 used to explain an example of editing by the editing device 201 of FIG.

11 is a diagram showing an example of data in the process of being edited from the primary literary work 22 to the secondary literary work 50 used for explaining an editing example by the editing device 201 of FIG.

FIG. 12 is a diagram showing an example of a state-changed primary work 53 used for explaining an example of additional part description by the additional part description function 230a of FIG. 5;

13 is a diagram showing an example of a difference description 52a used for explaining an example of additional part description by the additional part description function 230a of FIG.

FIG. 14 is a diagram showing an example of a state-changed / coordinate-changed primary work 56 used for explaining an additional part description example by the additional part description function 230c of FIG. 8;

15 is a diagram showing an example of a difference description 52c used for explaining an example of an additional part description by the additional part description function 230c of FIG.

16 is a diagram showing an example of data in the process of being edited from the primary literary work 22 to the secondary literary work 50 used for explaining an editing example by the editing device 201 of FIG.

17 is a diagram for explaining an editing example by the editing device 201 of FIG. 3 when the additional part description function 230a of FIG. 5 is used.

18 is a diagram for explaining an operation example of the reproducing device 300a in FIG. 6 when reproducing the secondary copyrighted work file 28a in FIG.

19 is a diagram for explaining an example of editing by the editing device 201 of FIG. 3 when the additional part description function 230c of FIG. 8 is used.

20 is a diagram for explaining an operation example of the reproducing device 300 in FIG. 4 when reproducing the secondary copyrighted work file 28b in FIG.

[Explanation of symbols]

201 Editing device 300 playback device 24 Primary Works File 30 Secondary Works File 26 Additions

Claims (18)

[Claims] 1. A device for reproducing a secondary work created by using the primary work, which is primary work data indicating the primary work, and edit contents made to the primary work. From the secondary work data including the additional data indicating that the primary work data and the additional data are extracted, and the reproducible secondary data is extracted based on the primary work data and the additional data extracted by the extraction device. A secondary copyrighted material reproduction device, comprising: a synthesizing unit for synthesizing data indicating a next copyrighted material. 2. The primary copyrighted material data is encrypted data, and the extracting means obtains a key used for decrypting the primary copyrighted material data using a recording medium or a communication line,
The secondary copyrighted material reproducing apparatus according to claim 1, further comprising a decryption unit that decrypts the primary copyrighted material data using the acquired key. 3. The primary copyrighted data and the additional data are data encrypted by using different encryption keys, and the extracting means decrypts the primary copyrighted data using a recording medium or a communication line. Characterized by having a means for acquiring a key used for encryption and a key used for decoding additional data, and a decoding means for decoding the primary copyrighted material data and the additional data using each acquired key. The secondary copyrighted material reproducing device according to claim 1. 4. The secondary copyrighted material data is encrypted data, and the extracting means acquires a key used for decrypting the secondary copyrighted material data using a recording medium or a communication line. When,
4. The secondary copyrighted material reproducing device according to claim 1, further comprising a decryption unit that decrypts the secondary copyrighted material data using the acquired key. 5. An apparatus for creating a secondary work using a primary work, which is an input means for indicating a primary work and for inputting encrypted primary work data. , A key acquisition means for acquiring a key used to decrypt the primary copyrighted material data using a recording medium or a communication line, a decryption means for decrypting the primary copyrighted material data using the acquired key, and a decrypted means Editing means for editing the primary copyrighted material data, additional data creating means for creating additional data indicating editing content made to the primary copyrighted material by the editing means, and encrypted primary data before decryption processing A secondary work data creating unit that creates secondary work data that is data indicating a secondary work by combining the work data and the additional data created by the additional data creating unit is provided. Characteristic secondary work creation device. 6. The secondary work creating apparatus according to claim 5, further comprising an encryption processing unit that performs an encryption process on at least one of the additional data and the secondary work data. . 7. The secondary work as claimed in claim 5, wherein the additional data is expressed by a difference in pixel value or acoustic data value between the primary work data and the secondary work data. Object making device. 8. The secondary work creation device according to claim 5, wherein the additional data is expressed by a description indicating an editing procedure by the editing means. 9. The description of the additional data, which is a content of editing by which the data amount of the primary copyrighted material data is changed by the editing means, and a change corresponding to the description with respect to the primary copyrighted material data. 7. The secondary work creation device according to claim 5, wherein the secondary work creation device is represented by a difference in pixel value or acoustic data value from the next work data. 10. The description about the change of the state is expressed based on a change detected between the primary work data before editing and the secondary work data after editing. The secondary work creation device according to claim 9. 11. The description about the change of the state is related to the editing contents for changing the data amount of the primary work data by the editing means and the coordinate conversion of part or all of the primary work data. 10. The secondary literary work creating apparatus according to claim 9, further comprising a description indicating a process. 12. A charging means for providing a key for decrypting an encryption made by the encryption processing means in response to a request received via a communication line to a request source after performing a predetermined charging processing. The secondary work creation device according to claim 6, wherein the secondary work creation device is provided. 13. A method for reproducing a secondary copyrighted work created by using a primary copyrighted work, which is primary copyrighted work data indicating a primary copyrighted work, and edit contents made to the primary copyrighted work. Of the secondary work data including the additional data indicating that the primary work data and the additional data are extracted, and the reproducible secondary data based on the primary work data and the additional data extracted in the extraction process. And a synthesizing process for synthesizing data indicating the next literary work. 14. A method for creating a secondary work using a primary work, comprising an input step of inputting encrypted primary work data indicating a primary work. , A key acquisition process for acquiring a key used to decrypt the primary copyrighted data using a recording medium or a communication line, a decryption process for decrypting the primary copyrighted data using the acquired key, and a decrypted The editing process of editing the primary copyrighted material data, the additional data creating process of creating additional data indicating the edited contents made to the primary copyrighted material in the editing process, and the encrypted primary data before being decrypted. A secondary work data creation process for creating secondary work data that is data indicating a secondary work by combining the work data and the additional data created in the additional data creation process. And two How to create your next work. 15. A program used to reproduce a secondary copyrighted work created by a computer using a primary copyrighted work, the program being executed for primary copyrighted work data indicating the primary copyrighted work and the primary copyrighted work. Based on the extraction procedure for extracting the primary copyrighted material data and the additional data from the secondary copyrighted material data including the additional data indicating the edited content, and the primary copyrighted material data and the additional data extracted in the extraction procedure. A program for causing a computer to execute a synthesizing procedure for synthesizing data indicating possible secondary works. 16. A program used to create a secondary work by using a primary work by a computer, which shows a primary work and inputs encrypted primary work data. An input procedure, a key acquisition procedure for acquiring a key used to decrypt the primary copyrighted material data using a recording medium or a communication line, a decryption procedure for decrypting the primary copyrighted material data using the acquired key, and a decryption procedure. An editing procedure for editing the encrypted primary copyrighted material data, an additional data creating procedure for creating additional data indicating the edit content made to the primary copyrighted material in the editing procedure, and an encryption processing before decryption processing. Secondary copyrighted material data creation that creates secondary copyrighted material data that is data indicating a secondary copyrighted material by combining the created primary copyrighted material data and the additional data created in the additional data creation procedure. A program that causes a computer to execute the procedure. 17. The primary copyrighted work data and the additional data are extracted from the secondary copyrighted work data including the primary copyrighted work data indicating the primary copyrighted work and the additional data indicating the edit content made to the primary copyrighted work. A primary work is used by a computer by including a taking-out procedure and a synthesizing procedure for synthesizing data indicating a reproducible secondary work based on the primary work data and the additional data taken out in the taking-out procedure. A computer-readable recording medium in which a program used to reproduce the created secondary work is recorded. 18. An input procedure for inputting encrypted primary work data indicating a primary work and obtaining a key used for decrypting the primary work data using a recording medium or a communication line. Key acquisition procedure, decryption procedure for decrypting the primary copyrighted material data using the acquired key, editing procedure for editing the decrypted primary copyrighted material data, and editing procedure for the primary copyrighted material. The additional data creation procedure for creating additional data showing the edited content, the encrypted primary copyrighted work data before being decrypted, and the additional data created in the additional data creation procedure A procedure used to create a secondary work by using a primary work by a computer, including a procedure for creating a secondary work data that creates secondary work data that is data indicating a next work. Computer readable recording medium recording a ram.