JP2002368981A - Device and method for embedding electronic watermark, recording medium and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize copyright protection of high safety, which can specify a user later even if the person performs illegal use. SOLUTION: An electronic watermark embedding device has an original collation information extracting means selecting a plurality of types of original collation information or combining a plurality of pieces of original collation information and taking it as electronic watermark information, an electronic watermark embedding means burying electronic watermark information which is taken into author data and a control means controlling the original collation information extracting means and the electronic watermark embedding means and controlling an electronic watermark embedding operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for protecting a copyright by adding a digital watermark to image data and audio data, and is capable of effectively preventing copyright infringement during creation and use of copyrighted work data. The present invention relates to an electronic watermark embedding apparatus and method for embedding personal verification information as watermark information.

[0002]

2. Description of the Related Art Conventionally, a system using a digital watermark is:
As shown in FIG. 11, the author 5 gives a service provider managing the embedded server 6 a name identifying the copyrighted work 2 and the author, code information such as ID, or image information such as a company emblem,
Alternatively, copyright information 3 consisting of key information such as a personal identification number is deposited and requested to create a digitally watermarked work 4 and paid for.

[0003] As a conventional example regarding prevention of copyright infringement when using a copyrighted work, there is the following document. JP-A-10-14
5756 "Information receiving device and card module applied to the device" includes:
That is, the data embedding means provided in the card module detachably attached to the information receiving apparatus embeds the identification data of the user who receives and provides the information in the provided information so that the user who has made the illegal copy can be specified. The proposal has been disclosed.

[0004]

In the conventional example shown in FIG. 11, since the service provider managing the embedded server 6 is in charge of the embedding process, the copyright information 3 can be easily copied. Due to the format, the digital watermarked work 4 may be illegally copied and distributed to a third party to infringe copyright. In addition, in order to create the digital watermarked work 4, it is necessary to take the trouble of requesting a service provider or pay a fee.

[0005] Japanese Patent Application Laid-Open No. H10-145756 states that the identification information of a user to be embedded in a work is stored in advance in a card module supplied from an information provider in the embodiment. It was possible to infringe on a copyrighted work by impersonating another person by using the card module illegally, and the method of identifying users was not sufficiently reliable.

[0006] One of the objects of the invention according to the present application is the first aspect.
And the author himself can easily and inexpensively combine multiple pieces of personal verification information according to the required degree of reliability, and can easily select appropriate personal verification information according to the ease of extraction of personal verification information. Or a digital watermarked work that can be created by selecting the appropriate identity verification information according to the attribute of the work. It is highly reliable and flexible, and electronic devices that cannot be easily forged by a third party. It is to provide a watermark embedding technique.

One of the objects of the invention of the present application is the second aspect.
To solve the problem described above, as the identification information of the user of the copyrighted work, combine multiple pieces of personal verification information according to the required reliability, or select appropriate personal verification information according to the attribute of the copyrighted work. It is an object of the present invention to provide a digital watermark embedding technique that can be used to embed a digital watermark in a work and that can specify a user with high reliability.

[0008]

According to one aspect of the present invention, there is provided personal identification information extracting means for selecting a plurality of types of personal verification information or combining a plurality of personal verification information as digital watermark information, Digital watermark embedding means for embedding the fetched digital watermark information into copyrighted work data; and control means for controlling the personal verification information extracting means and the digital watermark embedding means to control a digital watermark embedding operation. An electronic watermark embedding device is provided.

According to another aspect of the present invention, a step of selecting a plurality of types of personal verification information or combining a plurality of personal verification information and capturing it as digital watermark information; Embedding a digital watermark in the data.

According to still another aspect of the present invention, a procedure for selecting a plurality of types of personal verification information or combining a plurality of personal verification information and capturing the digital watermark information as digital watermark information; There is provided a computer-readable recording medium on which a program for causing a computer to execute a procedure of embedding an electronic watermark in object data is recorded.

According to still another aspect of the present invention, a procedure of selecting a plurality of types of personal verification information or combining a plurality of personal verification information and capturing the digital watermark information as digital watermark information; A program is provided for causing a computer to execute a procedure of embedding an electronic watermark in object data.

According to the present invention, a plurality of types of identity verification information can be selected or a plurality of identity verification information can be combined and taken in as digital watermark information. Thus, even if the user makes unauthorized use, copyright protection with high security can be realized in which the user can be identified later.

[0013]

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a digital watermark embedding terminal according to an embodiment of a digital watermark embedding device according to the present invention, and FIG. FIG. 1 is a diagram illustrating an overall configuration of a digital watermark embedding system using a watermark embedding terminal.

First, a digital watermark embedding system according to this embodiment will be described with reference to FIG. In FIG. 2, 5 is a user, 1 is a digital watermark embedding terminal that the user can use as a normal portable information terminal, 2 is literary work data such as document data and image data, and 6 is a person such as a signature. Collation information,
Reference numeral 4 denotes digital watermarked copyrighted work data in which personal identification information such as the signature is embedded as a digital watermark.

Next, the configuration of the digital watermark embedding terminal 1 will be described with reference to FIG. In FIG. 1, 101 is a control unit, 102 is a data storage unit that stores watermark information, personal identification information, authentication information, and other various control data, and user data. 103 is a control program of the digital watermark embedding terminal 1. This is a program storage unit for storing. 104
Is copyrighted work data 2 or digitally watermarked copyrighted work data 4
Is a data transmission / reception unit that transmits / receives data to / from a terminal or a storage medium to which the data is to be transmitted / received via wireless, wired, or various storage media.

Reference numeral 105 denotes a plurality of types of personal verification information extracting units for extracting a plurality of types of personal verification information 6 such as signature information and fingerprint information, and reference numeral 106 denotes a digital watermark embedding unit. Copyrighted work data 2
Then, the plurality of types of the extracted personal verification information 6 are embedded as digital watermark information, and the digital watermarked copyrighted work data 4 of the personal verification information is created. An authentication unit 107 performs personal authentication including personal identification. Reference numeral 108 denotes an electronic watermark detection / analysis unit that detects whether or not a digital watermark has been applied to copyrighted work data and analyzes the contents of the watermark information.

The control unit 101 includes a program storage unit 1
03, the program storage unit 10
3. Data storage unit 102, data transmission / reception unit 104, multiple types of personal identification information extraction units 105, digital watermark embedding unit 106, authentication unit 107, digital watermark detection / analysis unit 108
And controls the entire digital watermark embedding terminal 1.

FIG. 3 shows the configuration of FIG. 1 in which handwritten signature information, fingerprint information and iris information are used as personal identification information, and a plurality of types of personal identification information extraction units 105 of FIG.
Pen input unit 109 such as touch panel, display unit 1 such as liquid crystal
10, fingerprint information input unit 111 and iris information input unit 112
It consists of and. In the configuration shown in FIG. 3, the control unit 101 controls the display unit 110, the pen input unit 109, the fingerprint information input unit 111, and the iris information input unit 112 to obtain the required reliability or the ease of extracting the collation information. In accordance with the collation level, the handwritten signature information input from the pen input unit 109, the fingerprint information input unit 1
11 and the iris information input unit 1
Appropriate personal verification information is selected or combined from the plurality of personal verification information of the iris information input from the iris information 12 and used as personal verification information and digital watermark information.

FIG. 4 is a diagram showing the internal configuration of the digital watermark embedding unit 106. Here, the drawing shows a configuration in the case where copyrighted data including image information and audio information is frequency-converted and watermark information is embedded in a specific frequency component.

Referring to FIG. 4, reference numeral 201 denotes a frequency converter for converting input copyrighted work data 204 into frequency components;
02 is an adder for embedding the watermark information 205 in a predetermined frequency component of the copyrighted work data converted into the frequency component, 203
Numeral denotes a frequency inverse converter for converting and outputting the frequency component data in which the watermark information is embedded into the digital watermarked copyrighted work data 206 in the original space area.

FIG. 5 is a diagram showing the internal configuration of the detection unit of the digital watermark detection / analysis unit 106. Here, a configuration is shown in which watermark information is detected from digital watermarked copyrighted work data created by frequency-converting copyrighted data composed of image information and audio information and embedding watermark information in a specific frequency component. It is a drawing.

In FIG. 5, the same blocks as those in FIG. 4 are denoted by the same reference numerals. Reference numeral 207 denotes a filter for extracting only data of a specific frequency component in which the watermark information is embedded, and the other components are the same as those in FIG.

Next, according to the flow charts of FIGS. 6 and 7, when the author himself or herself embeds the identity verification information 6 as author information at the time of creating or registering the copyrighted work data into the copyrighted work data, or In the following, an operation will be described in which a user of the present invention embeds personal identification information as user information as digital watermark in copyrighted work data when using copyrighted work data.

In the present embodiment, when the user embeds a digital watermark in his or her own work with his or her identity verification information as author information, the collation level relating to the reliability of the identity verification of the identity verification is set. It is possible to instruct, and in order of the collation level, (handwritten signature & fingerprint & iris), (fingerprint & iris), (handwritten signature & iris), (handwritten signature & fingerprint), iris, fingerprint, handwritten signature 7 steps can be selected. When using copyrighted work data in which the author information has already been embedded in a digital watermark, the default is to automatically request the input of the personal verification information of the fourth verification level (handwritten signature and fingerprint). And

In this embodiment, the user 5 registers handwritten signature information, fingerprint information, and iris information as digital watermark information in the digital watermark embedding terminal 1 owned by the user 5 in advance. When creating the watermarked copyrighted work data 4 or using the digitally watermarked copyrighted work data 4, input one or more of handwritten signature information, fingerprint information, and iris information. It is assumed that digital watermark embedding is performed using the verification information as creator information or user information, respectively. Further, the copyrighted work data is created on the digital watermark embedding terminal and stored in the data storage unit 102 of the digital watermark embedding terminal 1, or created on another device or stored on another device. What has been
It is assumed that the data is transmitted to the digital watermark embedding terminal 1 by the data transmitting / receiving unit 104 and stored in the data storage unit 102.

In FIG. 6 and FIG.
In step 1, in the digital watermark embedding terminal 1, the pen input unit 109 detects input by a software keyboard displayed on the display unit 110 by the user 5 of the embedding terminal or touch of an icon of copyrighted data on the screen by the pen input unit 109. Thus, the control unit 101 of the digital watermark embedding terminal 1 creates the copyrighted work data 2 created or desired by the user 5.
Is recognized, the control unit 101 checks in step S102 whether the digital watermark detection / analysis unit 108 embeds a digital watermark in a predetermined format in the specified copyrighted work data. If the digital watermark is not embedded, the designated copyrighted work data 2
Is determined to be newly created literary work data, and in step S103, when there is a request from the user 5 who is the creator of the literary work data 2 to embed a digital watermark in personal verification information as creator information, User 5 in step S104
Waiting for the specification of the collation level relating to the reliability of the personal collation of the personal collation information from. In the present embodiment, it is assumed that the user has designated the third-level collation level (handwritten signature & iris). The control unit 101 of the digital watermark embedding terminal 1 requests the user 5 to input a handwritten signature on the display unit 110 in step S105.

On the other hand, when the pen input unit 109 detects a handwritten signature input from the user 5 in step S106, the pen input unit 109 acquires handwritten signature information from the handwritten signature input in step S107. The data is stored in the data storage unit 102. In step S108, the authentication unit 107 checks whether the obtained handwritten signature information of the user 5 matches the handwritten signature information of the user 5 stored in the data storage unit 102 in advance. If the handwritten signature information has not been authenticated in step S108, the user 5 is determined to be an unauthorized user of the digital watermark embedding terminal 1, and the process ends.

If the authentication is made in step S108, the control unit 101 of the digital watermark embedding terminal 1 proceeds to step S1.
At 09, the display unit 110 requests the user 5 to input an iris. On the other hand, in step S110, the user 5
Is detected by the iris information input unit 112 from the iris information input unit 112, the iris information is obtained from the iris input by the iris information input unit 112 in step S111.
2 is stored. In step S112, the authentication unit 107 checks whether the obtained iris information of the user matches the iris information of the user 5 stored in the data storage unit 102 in advance. If the iris information has not been authenticated in step S112, the user 5 is determined to be an unauthorized user of the digital watermark embedding terminal 1, and the process ends.

If the authentication is successful in step S112, in step S113, the control unit 101 controls the digital watermark embedding unit 106 to store the handwritten signature information and iris information stored in the data storage unit 102, the author's name, A digital watermark embedding process is performed on the copyrighted work data using the author's supplementary information such as an identification number, the date / time information from a date / time measuring unit (not shown), and the identification code indicating the creation of the copyrighted work as the use type as the author information. Subsequently, in step S114,
The display unit 110 displays the completion of the digital watermark embedding process as the author information of the personal identification information in the copyrighted work data. When the user 5 requests registration of the watermarked copyrighted work data in step S115, the process proceeds to step S116. The control unit 101 stores the digital watermarked work data created in step S113 and accompanying information such as the author's name, identification number, creation date and time in a predetermined area of the data storage unit 102, and stores the digital watermarked work. The data 4 is registered as the copyrighted work data of the user 5.

On the other hand, if the digital watermark has been embedded in step S102, it is determined that the designated copyrighted work data 2 is copyrighted data whose copyright has already been registered by the author, and step S117 is performed. The user 5 who is a user of the copyrighted work data 2 receives the copyrighted work data 2
When there is a request for use, the control unit 101 of the digital watermark embedding terminal 1 requests the user 5 to input a handwritten signature on the display unit 110 in step S118. On the other hand, when the pen input unit 109 detects a handwritten signature input from the user 5 in step S119, the process proceeds to step S1.
In step 20, the handwriting signature information is obtained from the handwriting signature input in the pen input unit 109 and stored in the data storage unit 102. In step S121, the authentication unit 107 checks whether the obtained handwritten signature information of the user matches the handwritten signature information of the user 5 stored in the data storage unit 102 in advance. If the handwritten signature information is not authenticated in step S121, the user 5 determines that an unauthorized user of the digital watermark embedding terminal 1 or access to the copyrighted work data is not permitted,
The process ends.

If the authentication is successful in step S121, the control unit 101 of the digital watermark embedding terminal 1 proceeds to step S1.
At 22, the display unit 110 requests the user 5 to input a fingerprint. On the other hand, in step S123, the user 5
When the fingerprint information input unit 111 detects the fingerprint input from the fingerprint information input unit 111, the fingerprint information input unit 111 acquires fingerprint information from the fingerprint input in step S124, and
2 is stored. In step S125, the authentication unit 107 checks whether the obtained fingerprint information of the user matches the fingerprint information of the user 5 stored in the data storage unit 102 in advance. If the fingerprint information has not been authenticated in step S125, the user 5 determines that an unauthorized user of the digital watermark embedding terminal 1 or access to the copyrighted work data is not permitted, and ends the process.

If the authentication is successful in step S125, in step S126, the control unit 101 controls the digital watermark embedding unit 106 to store the handwritten signature information and fingerprint information stored in the data storage unit 102, the user name, A digital watermark embedding process is performed on the literary work data as user information including user additional information such as an identification number, date / time information from a date / time measuring unit (not shown), and an identification code indicating use as a use type. Subsequently, in step S127, the display unit 110 displays the user authentication completion regarding the use of the copyrighted work data, and in step S128, displays the copyrighted work data with the digital watermark added as the user information on the display unit 110. Thus, the copyrighted work data is made available to the user 5.

In the digital watermark detection processing in step S 102, first, the digital watermarked work data 4 is converted into a frequency component by the frequency converter 201. Then, in order to extract the digital watermark information embedded in the specific frequency, the frequency conversion data of the digital watermark copyrighted work data is input to the filter 207 that passes only the specific frequency component, and the digital watermark information is extracted. The extracted digital watermark information is separated into original identification information, personal identification accompanying information, and digital watermark accompanying information before being processed as digital watermark information by a post-processing unit (not shown).

In the digital watermark embedding process in steps S113 and S126, first, the copyrighted work data 2 is converted into a frequency component by the frequency converter 201. Also, a plurality of personal identification information selected from handwritten signature information, iris information, and fingerprint information stored in the data storage unit 102 are processed into appropriate data as digital watermark information by a preprocessing unit (not shown). Then, in the adder 202, the processed digital watermark information is embedded in a specific frequency of the copyrighted work data 2, and the result is inversely converted to spatial domain data by the frequency inverse converter 203, and the digital watermarked copyrighted work data is converted. 4
Output as

As described above, in the embodiment of the present invention, the digital watermark embedding terminal 1 selects the personal verification information including a plurality of types of biometric information of the user 5 or selects the plural personal verification information. Means for combining the information as digital watermark information; means for instructing the user to embed a digital watermark when the user is the author; and means for converting the digital watermark information into copyrighted work data by either author information or user information. Means for embedding so that it can be distinguished; means for detecting and analyzing digital watermark information from copyrighted work data for judging one of two uses of creation or use of copyrighted work; Specify a collation level, select appropriate personal collation information according to the designated collation level, or combine a plurality of personal collation information with digital watermark information. Means for controlling the digital watermark embedding operation by controlling each of the above means, so that the user can use the digital watermark embedding terminal which can be normally used as a portable information terminal, so that the user can use the digital watermark embedding terminal as the author. When creating a product, the author information is easily and inexpensively, and the author information is embedded with a digital watermark in a flexible manner so that appropriate identity verification information is selected according to the required reliability. Work can be created.

In the case where the user uses the copyrighted work data, the copyrighted data already embedded with the digital watermark is detected, and the user's identity verification information is automatically requested to use the copyrighted work data. By embedding the personal identification information of the user extracted as user information after embedding a digital watermark, it is possible to identify the user later even if the user has performed unauthorized use And highly reliable copyright protection can be implemented.

In particular, since personal identification information composed of biometric information is difficult to obtain by a third party other than the principal, embedding the information as a digital watermark makes it difficult to forge a digital watermarked work easily. However, there is a great effect that the security is very high in terms of copyright protection.

In the present embodiment, the digital watermark embedding unit 106 has a configuration in which digital watermark information is embedded after frequency conversion of copyrighted work data, and the frequency is inversely converted. However, the configuration of the digital watermark data embedding unit is not limited to the configuration of the embodiment. For example, it goes without saying that a configuration in which digital watermark data is embedded in a sample value of copyrighted work data or another configuration may be used.

In the present embodiment, the means for taking in handwritten signature information is constituted by a pen input unit. However, the signature information is taken in by detecting the movement of an arm and five fingers for writing a signature. It goes without saying that other configurations and methods may be used.

Further, in this embodiment, when embedding the personal identification information as a digital watermark, in order to distinguish either the author information or the user information, it is necessary to distinguish the two together with the personal identification information. The type identification code is embedded as a digital watermark. However, realizing means for distinguishing applications is not limited to such a method. As long as the means for embedding the digital watermark so that both can be identified, for example, the frequency for embedding the digital watermark is different between when embedding as author information and when embedding as user information, or by other realizing means. Needless to say, there is no problem.

In the present embodiment, when a predetermined digital watermark is detected by the digital watermark embedding detection / analysis unit which is a means for judging the use of the copyrighted work data creation and the use of the copyrighted work data, the usage is determined. Although it is configured to judge that a work is created and wait for the digital watermark embedding instruction of the personal verification information from the author, it is needless to say that the personal verification information extraction may be automatically requested after the use determination.

Further, in the present embodiment, when the author issues a digital watermark embedding instruction of the identity verification information, the collation level relating to the reliability can be designated, but the invention is not limited to the collation level relating to the reliability. Needless to say, it is also possible to prepare a collation level relating to the ease of extraction of the personal collation information and other scales, so that an arbitrary collation level can be designated.

(Second Embodiment) In the first embodiment, when the author embeds a digital watermark using personal verification information as creator information, a plurality of types of verification are performed in accordance with a verification level relating to a specified reliability. An example has been described in which one of a plurality of preset combinations of the personal verification information is selected from the personal verification information, and the personal verification information of the combination is extracted and embedded in the copyrighted work data as a digital watermark. The second embodiment of the present invention recognizes the attribute (image data, audio data, text data, etc.) of the copyrighted work data and selects appropriate personal identification information according to the attribute of the copyrighted work data, or This shows an example in which a plurality of pieces of personal verification information are combined and embedded as digital watermark information.

FIG. 8 is a diagram showing the configuration of the digital watermark embedding terminal 1 according to the second embodiment. In this embodiment,
This is obtained by adding a copyrighted work data attribute recognition unit to the configuration of the first embodiment in FIG. In FIG. 8, reference numeral 113 denotes a data attribute recognizing unit for recognizing whether the copyrighted work data is text information, audio information, or image information.

In the present embodiment, the copyrighted work data is image information, and the image information is not significantly deteriorated even if the digital watermark data amount is increased in order to increase the reliability. Digital watermark embedding is performed using a combination of fingerprint information and iris information.

The operation of this embodiment will be described below with reference to the flowcharts of FIGS. First, step S20
In the digital watermark embedding terminal 1, the pen input unit 109 detects an input by a software keyboard displayed on the display unit 110 by the user 5 of the embedded terminal or a touch on the icon of the copyrighted work data on the screen by the pen input unit 109. The control unit 101 of the digital watermark embedding terminal 1 creates the copyrighted work data 2 created or desired by the user 5.
Is recognized, in step S202, the control unit 101 controls the data attribute recognizing unit 113 so that the contents of the data are respectively stored in a plurality of standard patterns of text data, audio data, and image data. By recognizing the attribute of the data by comparing the data array and the format.

Next, in step S203, the control unit 101
Checks whether the digital watermark detection / analysis unit 108 embeds a digital watermark in a predetermined format in the designated copyrighted work data. If the digital watermark has not been embedded, it is determined that the designated copyrighted work data 2 is newly created copyrighted work data, and step S20 is performed.
In step 4, when the user 5 who is the creator of the literary work data 2 requests the digital watermark embedding of the personal identification information as the author information, the control unit 10 of the digital watermark embedding terminal 1
First, among the combinations of fingerprint information and iris information determined to be appropriate for the copyrighted work data of image information in step S205, first, the display unit 110 requests the user 5 to input a fingerprint. On the other hand, when a fingerprint input from the user 5 is detected by the fingerprint information input unit 111 in step S206, the fingerprint information is acquired from the fingerprint input in the fingerprint information input unit 111 in step S207, and the data storage unit 102 To be stored.

The following is the flowchart of the first embodiment, which is completely the same except that the personal identification information to be extracted in the case of using the copyrighted data is replaced by handwriting signature input and fingerprint information and iris information from fingerprint information. Is omitted.

As described above, in the present embodiment, in the digital watermark embedding terminal 1, the personal verification information composed of a plurality of types of biometric information of the user 5 is selected or a plurality of personal verification information is selected. Means for combining information as digital watermark information, means for instructing the user to embed a digital watermark when the user is the author, and adding the digital watermark information to the copyrighted work data as either author information or user information. Means for embedding so as to be distinguishable, means for detecting and analyzing digital watermark information from copyrighted data for judging either of two uses, creation or use of copyrighted work, and means for recognizing the attribute of copyrighted data and Means for selecting or combining a plurality of appropriate personal identification information according to the attribute and taking in as digital watermark information; and controlling the respective means to embed a digital watermark. By providing a means for controlling the operation, if the user creates a work as an author using a digital watermark embedding terminal that can be used as a portable information terminal, the author himself can easily and inexpensively. In addition, it is possible to flexibly create a work in which the author information is embedded with a digital watermark by selecting appropriate personal identification information according to the attribute of the work data.

When the user uses the copyrighted work data, it detects the author information in which the digital watermark is embedded and automatically requests the user's identity verification information to use the copyrighted work data. By embedding the personal identification information of the user extracted as user information after embedding a digital watermark, it is possible to identify the user later even if the user has performed unauthorized use And highly reliable copyright protection can be implemented.

In particular, since personal verification information including biometric information is difficult to obtain by a third party other than the principal, embedding the information as a digital watermark makes it difficult to forge a digital watermarked work easily. There is a great effect that the security is very high in terms of copyright protection.

In the present embodiment, the data attribute recognition unit 113 compares the contents of the author data with a plurality of standard patterns of text data, audio data, and image data, which are stored in advance, in a data arrangement and a format. Although the attribute of the data is recognized by the above, it is also possible to realize the above with a control unit, a program storage unit, and a data storage unit without providing a data attribute recognition unit as a special hardware resource. Needless to say, the method of recognizing the attribute may be a method of making a determination based on the identifier of the data file name, or any other method.

The present invention is applicable as the following various embodiments. (1) Principal verification information extracting means for selecting a plurality of types of personal verification information or combining a plurality of personal verification information as digital watermark information, and embedding a digital watermark for embedding the fetched digital watermark information in copyrighted work data Means, and control means for controlling the above means to control the digital watermark embedding operation. According to this, it is possible to select a plurality of types of personal verification information or combine a plurality of personal verification information and take in the digital watermark information.

(2) It has an instructing means for instructing the digital watermark embedding from the author, and when the author instructs the digital watermark embedding, the personal verification information extracted by the personal verification information extracting means is converted to the author information. Control to perform a digital watermark embedding operation on copyrighted work data. According to this, when the digital watermark embedding is instructed by the author, the digital watermark embedding operation can be performed on the copyrighted work data using the personal verification information extracted by the personal verification information extracting means as the author information.

(3) When the embedded digital watermark information is detected, the control means adds the digital watermark information to the copyrighted work data so that the digital watermark information can be distinguished from the author information or the user information. It is characterized in that it is controlled so as to be embedded as a digital watermark. According to this, when the embedded digital watermark information is detected, it is possible to embed the digital watermark information in the copyrighted work data so that it can be distinguished whether the personal identification information is the author information or the user information. it can.

(4) There is a use judging means for judging two uses of creation or use of copyrighted work data, and the control means, when judging that the use is creation of copyrighted work data, extracts it by means of the personal verification information extracting means. Performs a digital watermark embedding operation on the copyrighted work data using the identity verification information as the author information,
When the use is determined to be copyrighted data use, the personal identification information extracting means is automatically operated to extract the personal identification information,
The personal identification information is used as user information, and control is performed so that an electronic watermark embedding operation is performed on copyrighted work data. According to this, when it is determined that the use is to create copyrighted work data, an electronic watermark embedding operation is performed on the copyrighted work data using the personal verification information extracted by the personal verification information extraction means as the author information, and the use is determined to be the use of the copyrighted work data. If it is determined, the personal verification information extracting means can be automatically operated to extract the personal verification information, and the digital watermark embedding operation can be performed on the copyrighted work data using the personal verification information as user information.

(5) The use determining means has a digital watermark detecting / analyzing means for detecting / analyzing digital watermark information from the copyrighted work data, and a predetermined digital watermark is obtained from the copyrighted work data by the digital watermark detecting / analyzing means. If not detected, the usage is determined to be a copyrighted work, and the digital watermark detection /
When a predetermined digital watermark is detected from the copyrighted work data by the analysis means, the usage is determined to be the use of the copyrighted work data. According to this, when a predetermined digital watermark is not detected from the copyrighted data by the digital watermark detecting / analyzing means, the application is determined to be a copyrighted work, and the digital watermark detecting / analyzing means determines the predetermined usage from the copyrighted data. If the digital watermark is detected, it can be determined that the application is to use copyrighted work data.

(6) The control means makes the instruction means for instructing the digital watermark embedding from the author effective when the use judging means judges that the copyrighted work data is to be created, and the use judging means makes use of the copyrighted work data. When it is determined that the instructing means is invalidated, the personal identification information extracting means is automatically operated to perform control to extract the personal identification information. According to this, when the use determining means determines that the copyrighted work data is created, the instruction means for instructing the digital watermark embedding from the author is enabled, and when the use determining means determines that the copyrighted work data is used, The instructing means can be disabled and the personal identification information extracting means can be automatically operated to extract the personal identification information.

(7) The identity verification information extracting means includes identity verification means, and the control means and the digital watermark embedding means apply the extracted identity verification information to digital work data only when the identity verification is performed. It is characterized by being embedded as. According to this, the extracted personal verification information can be embedded as a digital watermark in the copyrighted work data only when the personal verification is performed.

(8) The personal identification information extracting means has an input means for designating a collation level related to the reliability of collation of the personal collation or the ease of collation information extraction, etc., and an appropriate one according to the designated collation level. It is characterized in that personal identification information is selected or a plurality of personal identification information is combined and taken in as digital watermark information. According to this, electronic watermark information is selected by selecting appropriate personal verification information or combining a plurality of personal verification information in accordance with a verification level relating to the reliability of verification of specified personal verification or the ease of extracting verification information. Can be captured as

(9) The personal verification information extracting means has means for recognizing the attribute of the copyrighted work data, and selects appropriate personal verification information in accordance with the attribute of the copyrighted work data, or outputs a plurality of personal verification information. It is characterized in that it is taken in as digital watermark information in combination. According to this, it is possible to select appropriate personal identification information according to the attribute of the copyrighted work data, or combine the plural pieces of personal identification information and take in the digital watermark information.

(10) The personal identification information extracting means is characterized by comprising means for extracting biometric information. According to this, the biometrics information can be extracted as the personal identification information.

(11) Each means described in the above (1) is constituted as one portable information terminal. According to this, each means described in the above (1) can be configured as one portable information terminal.

According to the above (1), not only at the time of creating the copyrighted work data but also at the time of using the copyrighted work data, even in the event that the user makes unauthorized use, the highly secure copyrighted work can be identified later. There is a great effect that rights protection can be implemented.

According to the above (2) and (6), at the time of creating the copyrighted work data, the creator does not request the third-party service business operator or the like who manages the embedded server, and the creator can make it under his own instruction. A digital watermarked work can be created easily and inexpensively, which is very convenient and economical. In addition, since personal verification information used as a digital watermark is difficult to obtain by a third party other than the author, it is difficult for a third party to easily forge a digital watermarked work using the personal verification information as a digital watermark. It is no longer possible, and there is a great advantage that the security is very high in terms of copyright protection.

According to the above (3), the digital watermark information to be embedded in the work can distinguish either the author information or the user information. Either use can be determined, and there is a great effect that flexible and appropriate processing can be performed according to each application.

According to the above (4), by judging the two purposes of creating the copyrighted work data or using the copyrighted work, a plurality of identity verifications can be made to the author according to the required reliability at the time of creating the copyrighted work data. Information can be selected. On the other hand, when copyrighted work data is used, priority is given to ease of identification information extraction, and one of the easy and reliable identification information is selected. There is a great effect that flexible and appropriate processing can be performed.

According to the above (5), by detecting and analyzing the digital watermark information from the copyrighted work data, it is possible to determine the two uses of creating the copyrighted work data or using the copyrighted work. There is a great effect that flexible and appropriate processing can be performed.

According to the above (7), the control means controls to execute the digital watermark embedding only when the identity verification can be confirmed. Authentication (identification)
The same personal verification information can be used when performing the process, and there is a great effect that it is very efficient.

According to the above (8), it is possible to designate a collation level relating to the degree of reliability or the ease of extracting the personal verification information, etc., so that the reliability and the ease of extracting the personal verification information can be determined. There is a great effect that it is possible to flexibly extract personal verification information and embed a digital watermark.

According to the above (9), there is a great effect that an appropriate personal identification information can be selected according to the attribute of the copyrighted work data and the digital watermark can be embedded.

According to the above (10), by extracting biometrics information as personal verification information, it is difficult for a third party other than the principal to obtain the information, and the information is embedded as a digital watermark. There is a great effect that it is not possible to easily forge the object and the security is very high in terms of copyright protection.

According to the above (11), by configuring each of the means as one portable information terminal, the user can easily and easily use the digital watermark embedding terminal which can be normally used as the portable information terminal. It is very convenient and economical because it can create and use digital watermarked works at low cost.

This embodiment can be realized by a computer executing a program. Also,
Means for supplying the program to the computer, for example, a recording medium such as a CD-ROM in which the program is recorded, or a transmission medium such as the Internet for transmitting the program can also be applied as an embodiment of the present invention. The above-described program, recording medium, and transmission medium are included in the scope of the present invention. As the recording medium, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, and the like can be used.

It should be noted that each of the above-described embodiments is merely an example of an embodiment for carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. It is. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features.

[0076]

As described above, according to the present invention, a plurality of types of personal verification information can be selected or a plurality of personal verification information can be combined and taken in as digital watermark information. Not only at the time of use but also at the time of use, even if the user makes an illegal use, copyright protection with high security that can identify the user later can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a digital watermark embedding terminal according to an embodiment of a digital watermark embedding device according to the present invention.

FIG. 2 is a diagram illustrating an overall configuration of a digital watermark embedding system using the digital watermark embedding terminal according to the embodiment;

FIG. 3 is a block diagram showing a configuration of a digital watermark embedding terminal according to the first embodiment of the present invention.

FIG. 4 is a block diagram illustrating a configuration example of a digital watermark embedding unit.

FIG. 5 is a block diagram illustrating a configuration example of a digital watermark detection / analysis unit.

FIG. 6 is a first flowchart showing a digital watermark embedding operation according to the first embodiment of the present invention.

FIG. 7 is a second flowchart showing the digital watermark embedding operation according to the first embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a digital watermark embedding terminal according to a second embodiment of the present invention.

FIG. 9 is a first flowchart showing a digital watermark embedding operation according to the second embodiment of the present invention.

FIG. 10 is a second flowchart showing the digital watermark embedding operation according to the second embodiment of the present invention.

FIG. 11 is a conceptual diagram showing a system configuration of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Digital watermark embedding terminal 2 ... Work data 4 ... Digital watermarked work data of identity verification information 5 ... User 6 ... Identity verification information 101 ... Control unit 102 ... Data storage unit 103 ... Program storage unit 104 ... Data transmission / reception Unit 105: a plurality of types of identity verification information extraction units 106: digital watermark embedding unit 107: authentication unit 108: digital watermark detection / analysis unit 109: pen input unit 110: display unit 111: fingerprint information input unit 112: iris information input unit 113: Data attribute recognition unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/081 F term (Reference) 5B057 BA01 BA11 BA26 CE08 CE09 CG07 CH18 DA08 DA17 5C063 AB03 AB05 AC02 CA23 CA36 DA02 DA07 DA13 DB09 5C076 AA14 BA06 5J104 AA07 AA14 KA01 KA16 KA17 KA19

Claims (41)

[Claims] 1. An identification information extraction means for selecting a plurality of types of identification information or combining a plurality of identification information as digital watermark information, and an electronic device for embedding the captured electronic watermark information in copyrighted work data. An electronic watermark embedding apparatus, comprising: a watermark embedding unit; and a control unit that controls the electronic watermark embedding operation by controlling the personal verification information extracting unit and the electronic watermark embedding unit. 2. An electronic apparatus according to claim 1, further comprising an instruction unit for instructing embedding of a digital watermark by an operation of the author, wherein the control unit extracts the information by the identification information extracting unit when the author instructs to embed the electronic watermark. 2. The digital watermark embedding apparatus according to claim 1, wherein the electronic watermark embedding apparatus performs control so as to perform an electronic watermark embedding operation on the copyrighted work data using the authenticated information as author information. 3. The control means according to claim 1, wherein when the embedded digital watermark information is detected, the digital watermark information is added to the copyrighted work data such that the digital watermark information is either author information or user information. The digital watermark embedding device according to claim 1, wherein control is performed to embed the watermark as a watermark. 4. A system further comprising a use judging means for judging two uses of creation or use of the copyrighted work data, wherein the control means extracts the use by the personal identification information extracting means when the use is judged to be the creation of copyrighted work data. The digital watermark embedding operation is performed on the copyrighted work data using the personal identification information obtained as the author information, and when the use is determined to be copyrighted data use, the personal verification information extracting means is automatically operated to extract the personal verification information, The digital watermark embedding apparatus according to claim 1, wherein the personal verification information is used as user information to perform a digital watermark embedding operation on the copyrighted work data. 5. The use determining means has a digital watermark detecting and analyzing means for detecting and analyzing digital watermark information from the copyrighted work data, and the digital watermark detecting and analyzing means generates a predetermined digital watermark from the copyrighted work data. When the digital watermark is not detected, the usage is determined to be a copyrighted work, and when a predetermined digital watermark is detected from the copyrighted data by the digital watermark detection and analysis means, the usage is determined to be the copyrighted data. The digital watermark embedding device according to claim 4. 6. The control means, when the use judging means judges that the copyrighted work data is to be created, enables the instructing means for instructing the digital watermark embedding from the author, and the use judging means determines that the copyrighted work data is used. 5. The electronic watermark embedding apparatus according to claim 4, wherein when it is determined, the instruction means is invalidated and the personal verification information extracting means is automatically controlled to extract the personal verification information. 7. The personal identification information extracting means includes personal identification means, and the control means and the electronic watermark embedding means use the extracted personal identification information as a digital watermark in the literary work data only when the personal identification is performed. 7. The digital watermark embedding device according to claim 1, wherein the digital watermark is embedded. 8. The personal verification information extracting means has input means for specifying a verification level for personal verification, and the control means selects personal verification information or a plurality of personal verification information in accordance with the specified verification level. The digital watermark embedding device according to claim 1, wherein the user verification information is combined and taken in as digital watermark information. 9. The personal identification information extracting means has means for recognizing the attribute of the copyrighted work data, and the control means selects the personal identification information in accordance with the attribute of the copyrighted work data or a plurality of personal identification information. The digital watermark embedding device according to claim 1, wherein the electronic signature information is combined and taken in as digital watermark information. 10. The personal identification information extracting means extracts biometric information.
The digital watermark embedding device according to any one of the above. 11. The digital watermark embedding apparatus according to claim 1, wherein said personal verification information extracting means, said digital watermark embedding means and said control means are configured as one portable information terminal. . 12. A step of selecting a plurality of types of identity verification information or combining a plurality of pieces of identity verification information and capturing it as digital watermark information; and a step of embedding the captured identity verification information as digital watermark in copyrighted work data. A digital watermark embedding method, comprising: 13. A process for instructing embedding of a digital watermark by an operation of an author, wherein when the author instructs embedding of a digital watermark, the step of loading the above-mentioned identity verification information and the step of copying the acquired identity verification information to the copyright. 13. The digital watermark embedding method according to claim 12, wherein a step of embedding the digital watermark into object data is performed. 14. The digital watermark embedding step includes the steps of, when the embedded digital watermark information is detected, extracting the digital watermark information into the copyrighted work data so that the digital watermark information can be distinguished from the author information or the user information. 13. The method according to claim 12, further comprising the step of embedding as a digital watermark.
3. The digital watermark embedding method according to 3. 15. An electronic watermark embedding step for judging two uses of creation or use of copyrighted work data, wherein the digital watermark embedding step is performed by an identity verification information extraction step when the use is judged to be creation of copyrighted work data. Digital watermark embedding is performed on the copyrighted work data using the authenticated information as author information, and when the use is determined to be copyrighted data, the personal identification information extracting step is automatically performed to extract the personal identification information, and The digital watermark embedding method according to any one of claims 12 to 14, wherein digital watermark embedding is performed on the copyrighted work data using the personal identification information as user information. 16. The use judging step includes a digital watermark detecting and analyzing step of detecting and analyzing digital watermark information from the copyrighted work data, and a predetermined digital watermark is detected from the copyrighted work data by the digital watermark detecting and analyzing step. If not, the usage is determined to be a work creation, and if a predetermined digital watermark is detected from the copyrighted data in the digital watermark detection and analysis step, the usage is determined to be use of the work data. The digital watermark embedding method according to claim 15. 17. When the use determining step determines that the copyrighted work data is created, the author performs an instruction step of instructing embedding of a digital watermark. 16. The digital watermark embedding method according to claim 15, wherein the personal identification information extracting step is automatically performed without performing the instruction step. 18. The personal identification information extracting step includes a personal identification step, and the digital watermark embedding step is performed only when the personal identification is performed.
18. The digital watermark embedding method according to any one of 17. 19. The personal identification information extracting step includes a step of designating a collation level of the personal collation, and selecting the personal collation information according to the designated collation level or combining a plurality of personal collation information. 19. The digital watermark embedding method according to claim 12, wherein the digital watermark is fetched as watermark information. 20. The personal identification information extracting step includes a step of recognizing the attribute of the copyrighted work data, and selects the personal identification information in accordance with the attribute of the copyrighted work data or combines a plurality of the personal identification information with each other. The digital watermark embedding method according to any one of claims 12 to 19, wherein the digital watermark is taken in as watermark information. 21. The personal identification information extracting step according to claim 12, wherein the biometric information is extracted.
20. The digital watermark embedding method according to any one of 20. 22. A procedure for selecting a plurality of types of personal verification information or combining a plurality of personal verification information and capturing the same as digital watermark information; a step of embedding the captured personal verification information as digital watermark in copyrighted work data. Computer-readable recording medium that stores a program for causing a computer to execute the program. 23. A procedure for instructing embedding of a digital watermark by an operation of an author, and when the author instructs embedding of a digital watermark, a procedure for importing the personal identification information, and copying the acquired identity verification information to a copyright. 23. The recording medium according to claim 22, wherein a procedure for embedding as a digital watermark in object data is performed. 24. The digital watermark embedding procedure includes a step of, when the embedded digital watermark information is detected, determining whether the digital watermark information is author information or user information so as to distinguish the copyrighted data from the copyrighted work data. 23. The method according to claim 22, further comprising the step of embedding as a digital watermark.
4. The recording medium according to 3. 25. A use determination procedure for judging two uses of creation or use of copyrighted work data, wherein the digital watermark embedding procedure is extracted by the identity verification information extraction procedure when the use is determined to be creation of work data. Digital watermark embedding is performed on the copyrighted work data as the author information using the authenticated collation information as the author information, and when the use is determined to be copyrighted data use, the collation information extraction procedure is automatically performed to extract the identity verification information, and 25. The recording medium according to claim 22, wherein digital watermark embedding is performed on the copyrighted work data using the personal identification information as user information. 26. The use judging procedure comprises a digital watermark detection and analysis procedure for detecting and analyzing digital watermark information from copyrighted work data, and a predetermined digital watermark is detected from copyrighted work data by the digital watermark detection and analysis procedure. If not, the application is determined to be a copyrighted work, and if a predetermined digital watermark is detected from the copyrighted data by the digital watermark detection and analysis procedure, the usage is determined to be the copyrighted data. A recording medium according to claim 25. 27. When it is determined in the use determination procedure that creation of copyrighted work data is to be performed, an instruction procedure for instructing embedding of a digital watermark from the author is performed. 26. The recording medium according to claim 25, wherein the personal identification information extracting procedure is automatically performed without performing the instruction procedure. 28. The personal identification information extracting procedure includes a personal identification procedure, and the digital watermark embedding procedure is performed only when the personal identification is performed.
28. The recording medium according to any one of 27. 29. The personal identification information extracting step includes a step of designating a collation level of the personal collation, and selecting the personal collation information according to the designated collation level or combining a plurality of the personal collation information. The recording medium according to any one of claims 22 to 28, wherein the recording medium is taken in as watermark information. 30. The personal identification information extracting step includes a step of recognizing the attribute of the copyrighted work data, and selects the personal identification information according to the attribute of the copyrighted work data, or combines a plurality of the personal identification information with each other. The recording medium according to any one of claims 22 to 29, wherein the recording medium is captured as watermark information. 31. The method according to claim 22, wherein the identification information extracting step extracts biometrics information.
30. The recording medium according to any one of 30. 32. A procedure for selecting a plurality of types of personal verification information or combining a plurality of personal verification information as digital watermark information, embedding the captured personal verification information as digital watermark in copyrighted work data. A program for causing a computer to execute. 33. A procedure for instructing embedding of a digital watermark by an operation of an author, wherein when the author instructs embedding of a digital watermark, a procedure for importing the identity verification information and a step of copying the acquired identity verification information to the copyright. 33. The program according to claim 32, wherein a procedure for embedding an electronic watermark in object data is performed. 34. The digital watermark embedding procedure, wherein when the embedded digital watermark information is detected, the digital watermark information is added to the copyrighted work data so that the digital watermark information can be distinguished from the author information or the user information. 34. The method according to claim 32, further comprising the step of embedding as a digital watermark.
3. The program according to 3. 35. A use determination procedure for judging two uses of creation or use of copyrighted work data, wherein the digital watermark embedding procedure is performed by an identity verification information extraction procedure when the use is determined to be work creation data. Digital watermark embedding is performed on the copyrighted work data as the author information using the authenticated collation information as the author information, and when the use is determined to be copyrighted data use, the collation information extraction procedure is automatically performed to extract the identity verification information, and The program according to any one of claims 32 to 34, wherein a digital watermark is embedded in copyrighted work data using personal identification information as user information. 36. The use determination procedure comprises a digital watermark detection and analysis procedure for detecting and analyzing digital watermark information from the copyrighted work data, and a predetermined digital watermark is detected from the copyrighted work data by the digital watermark detection and analysis procedure. If not, the application is determined to be a copyrighted work, and if a predetermined digital watermark is detected from the copyrighted data by the digital watermark detection and analysis procedure, the usage is determined to be the copyrighted data. The program according to claim 35. 37. If it is determined in the use determination procedure that creation of work data is to be performed, an instruction procedure for instructing embedding of a digital watermark from the author is performed. The program according to claim 35, wherein the personal identification information extracting procedure is automatically performed without performing the instruction procedure. 38. The personal identification information extracting procedure includes a personal identification procedure, and the digital watermark embedding procedure is performed only when the personal identification is performed.
37. The program according to any of 37. 39. The personal identification information extracting step includes a step of designating a collation level of the personal identification, and selecting the personal identification information according to the designated collation level or combining a plurality of the personal identification information. 39. The program according to claim 32, wherein the program is taken in as watermark information. 40. The personal identification information extracting step includes a step of recognizing the attribute of the copyrighted work data, and selects the personal identification information according to the attribute of the copyrighted work data, or combines a plurality of pieces of personal identification information to perform electronic verification. The program according to any one of claims 32 to 39, wherein the program is fetched as watermark information. 41. The personal identification information extracting procedure according to claim 32, wherein the biometric information is extracted.
40. The program according to any one of 40.