JPH11272564A - Device and method for data working - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable contents distribution which has a digital water mark on which a content provider's intention is reflected inserted and worked beyond a difference of an algorithm(AL) that a processing system has under an open circumstance where upgrade of the AL and a different AL coexist. SOLUTION: In information provision services where plural digital water mark insertion algorithms 20 coexist, by preparing and giving contents attribute information (an external message) describing the intention of the water mark insertion to the contents by a contents provider, a means 10 interprets the content and converts it into a processing parameter requested by each algorithm and also gives the converted parameter to the corresponding algorithms 20, thus the digital water mark is enabled to be inserted in the contents in a form reflecting the above-mentioned intention.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device and a data processing method for inserting a digital watermark into contents provided as digital data.

[0002]

BACKGROUND OF THE INVENTION To clarify the source, or
In order to prevent plagiarism, there has been proposed a technique called digital watermark for adding secondary information to digital content so that it cannot be easily detected by a user.

At present, many digital watermarking algorithms have been researched and announced, and some of them are going to be commercialized. However, in most cases, the target data types and processing contents are not flexible. .

That is, the current digital watermarking algorithm is highly dependent on the data type, and has little processing flexibility. Therefore, when considering compatibility with multimedia data composed of multiple data types and application in an open environment where multiple digital watermark algorithms are mixed, the content provider's intention is not sufficient. Often cannot be reflected in.

[0005] As a means for solving this problem, it is conceivable that the electronic watermark insertion mechanism accepts certain attribute information other than the content and reflects it in the processing. Such attribute information enables processing corresponding to the data type and specification of processing operations by the content provider. However, for security measures and other reasons, the algorithm is updated, reused, or the algorithm is applied. Due to algorithm diversification factors such as interoperability in an open environment and the strong dependence of the digital watermarking algorithm on data types, correspondence to a plurality of algorithms must be considered.

[0006]

As described above, the conventional digital watermarking algorithm has a strong dependence on data type and has little processing flexibility. Therefore, when considering compatibility with multimedia data composed of multiple data types and application in an open environment where multiple digital watermark algorithms are mixed, the content provider's intention is not sufficient. Often cannot be reflected in.

As a means for solving this problem, it is conceivable that the digital watermark insertion mechanism accepts some kind of attribute information other than the content and reflects it in the processing. Such attribute information makes it possible to handle processing according to the data type and to specify the processing operation by the content provider. However, the algorithm can be upgraded, reused, or applied in an open environment. Also, there is a problem that the correspondence to a plurality of algorithms needs to be considered due to algorithm diversification factors such as the strength of the data type dependence of the digital watermark algorithm, which places a heavy burden on the content provider.

[0008] Accordingly, the content provider does not impose such a burden on the content provider, and can provide the content beyond the difference between the algorithms of the processing systems in an open environment where algorithms are upgraded or different algorithms are arranged side by side. The emergence of a data processing device that enables distribution of secondary data that reflects the intention of the user, for example, a content in which an electronic watermark is inserted and processed, is expected.

Therefore, the object of the present invention is to
It can express the information provider's intention without being restricted by the contents of the processing system, and can be used in an environment where multiple digital watermarking algorithms coexist in a manner that reflects the information provider's intention. It is an object of the present invention to provide a data processing device and a processing method capable of performing a digital watermark insertion process.

[0010]

In order to achieve the above object, the present invention is configured as follows. That is, by executing a predetermined processing algorithm to digital content given from outside the system and adding secondary data,
In a data processing device having a core (data processing means) for outputting, control data defining various requirements for adding secondary data is received, interpreted, and parameters adapted to a processing algorithm in the core are obtained. And a processing algorithm of the core for performing required processing on the digital content and adding secondary data to the digital content in accordance with given parameters. It is characterized by comprising.

Further, the interpreting means has a function of converting the control data input from the outside into a data format defined by a processing algorithm of the core and providing the converted data.

In addition, the core has a plurality of cores, and each of the cores has a different processing algorithm, and the interpreting means transmits the control data input from the outside to the processing algorithm of the core. Is provided with a function of converting the data into a data format specified by.

Also, in a data processing apparatus having a core for executing a predetermined processing algorithm and adding secondary data to digital content given from outside the system and outputting the data, the cores correspond to input data formats. Interpretation means for receiving control data defining various requirements when adding secondary data, interpreting this, converting the data into parameters suitable for the processing algorithm in the core, and giving the parameter to the core. It is characterized by having.

[0014] The present invention provides an information providing service in which a plurality of digital watermark insertion algorithms coexist and can be used when performing additional data addition processing (for example, digital watermark insertion) on the content. By creating and providing content attribute information (external message) describing the intention of inserting a watermark, it can be interpreted and converted into processing parameters required by each algorithm. By giving it to a watermark insertion algorithm, a digital watermark can be inserted into the content in a manner that reflects the above intention.

Further, when interpreting the intention of the information provider, the information provider can be restricted so that the user's intention is not unlimitedly interpreted.

Therefore, according to the present invention, the description of the processing intention for the content performed by the information provider can be interpreted and executed by each processing system having a different algorithm.

As a result, in an open environment where algorithms are upgraded or different algorithms are arranged side by side, the difference between the algorithms of the processing systems can be exceeded,
This makes it possible to obtain a data processing device that enables distribution of contents in which a digital watermark reflecting the intention of the content provider is inserted and processed, and is extremely useful for the content information provider.

In particular, according to the present invention, the intention of the information provider can be expressed without the restriction of the contents of the watermark insertion processing system in the addition of secondary data, for example, in digital watermark insertion. Therefore, it is possible to easily realize the update of the content of the digital watermark insertion algorithm, the simultaneous use of different processing algorithms, or the expression of the processing intention for the digital watermark adding process for multimedia data in which various data formats are mixed. Further, since the coexistence of a plurality of processing algorithms is facilitated, the applicability of digital watermark insertion in an open network environment, an information providing service for an unspecified number of people, and the like is expanded.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. (Basic Configuration) FIG. 1 shows secondary data (for example, a digital watermark) so that the content provider can achieve the intended state.
Of a digital watermark insertion device as a data processing device incorporating a message interpretation system for translating an instruction message for inserting a message into a setting format applicable on the system side and delivering the message to a data processing system. The basic schematic block diagram is shown.

In FIG. 1, reference numeral 100 denotes a digital watermark insertion device, 10 denotes a message interpretation system, and 20 denotes a digital watermark insertion core as a data processing system. The digital watermark insertion device 100 includes a message interpretation system 10 and a digital watermark insertion core 20. The message interpretation system 10 includes a memory 11 and a controller 12.

Of these, the controller 12 in the message interpretation system 10 is
Has a function of interpreting a processing message received from the outside based on the information held in the memory 11 in the message interpretation system 10 and delivering the processed message to the digital watermark insertion core 20 as a parameter that can be processed by the digital watermark insertion core 20 The digital watermark insertion core 20 performs a process of inserting a digital watermark into the content and outputs the content. The parameter receives necessary parameter values from the controller 12 in the message interpreting system 10 and processes the input content. This is a processing block having a function of performing a process of inserting a “digital watermark” and outputting the content as a content with a digital watermark.

Memory 11 in message interpreting system 10
Holds information necessary for the controller 12 to interpret the processing message received from the outside by the digital watermark insertion device 100 into parameters that can be processed by the digital watermark insertion core 20. .

The digital watermark insertion device 10 having such a configuration
No. 0 inputs externally the data of the content to which the digital watermark is to be inserted and a message for instructing how to insert the digital watermark.

Then, the controller 12 in the message interpretation system 10 allows the digital watermark insertion device 100 to interpret the processing message received from the outside based on the information held in the memory 11 and to process the digital watermark insertion core 20. It is passed to the digital watermark insertion core 20 as a parameter.

On the other hand, when the digital watermark insertion core 20 receives a parameter value necessary for processing from the controller 12 in the message interpretation system 10, the digital watermark insertion core 20 inserts a “digital watermark” into the content and converts the content into a content with a digital watermark. Output. The above is the rough operation of the present apparatus.

<Processing Procedure of Message Interpretation System 10> FIG. 2 shows the flow of information related to the message interpretation processing in the digital watermark insertion apparatus 100, and FIG. 3 shows the interpretation processing in the message interpretation system using this. The following shows an example of the procedure.

In order to insert a digital watermark using the digital watermark insertion device 100, the content creator or the content provider describes message data for digital watermark insertion processing on the content and externally writes the message data. The present digital watermark insertion device 10 as a message
Enter 0. The message data includes a message parameter ID (MEI; Message Parameter ID) and a message parameter scope (MES; Message Parameter Sco).
pe), Message Parameter Value (MEV; Message Par)
ameter Value).

Here, "MEI", "MES", "ME
V "is as follows: The first" MEI (message parameter ID) "is" ID (identification information) for distinguishing the type of message ". The second “MES (message parameter scope)” is
This is a "parameter indicating the permissiveness of message interpretation" and is used in the message interpretation system 10 (details will be described later). The third “MEV (message parameter value)” indicates “message value”.

The message parameter level (ME
L; Message Parameter Level), Message Parameter Scaling Principle (MESP; Message Parameter)
Scaling Principle) is prepared separately.

Here, "MEL (message parameter level)" is "a value used as a scale for evaluating interpretation tolerance when the message interpretation system 10 interprets a parameter" (described later).

"MESP (Message Parameter Scaling Principle)" is for "meaning the meaning of the value of MEV (Message Parameter Value)".

On the other hand, when the processing algorithm creator of the digital watermark insertion device 100 provides the digital watermark insertion core 20 which is a part for performing the digital watermark insertion, the ID of the parameter required by the digital watermark insertion core 20 is set. It is prepared in advance as a marking parameter ID (MAI; Marking Parameter ID).

In addition, the creator of the processing algorithm of the digital watermark insertion apparatus 100 may additionally select a marking parameter level (MPL) and a marking scaling principle (MASP; Marking Scalin).
g), Marking Parameter Interpretation Principal (MPIP)
Principal).

Here, the marking parameter level MP
L is “a value used as a scale for evaluating interpretation tolerance when the message interpretation system 10 interprets a parameter” (described later), and “MASP (marking scaling principal)” is “a digital watermark insertion core 20”. In order to make the meaning of each parameter value required by the.

"MPL" (or "MEL")
Is data that serves as a parameter for determining interpretation tolerance, and is prepared by a third party such as TTP (a trusted third party) instead of the algorithm creator (or content creator) who is the direct party. If it is put to practical use, it is useful from the viewpoint of ensuring fairness of judgment.

The "MPIP (Marking Parameter Interpretation Principal)" is "a description of rules for calculating each parameter value required by the digital watermark insertion core 20". Can be interpreted as “MEI (message parameter ID)”
Marking Parameter Value (MAV; Marking Parameter Value) from the "MEV (Message Parameter Value)"
Value).

The message interpreted by the controller 12 is sent to the digital watermark insertion core 20 by "MAI".
(Marking parameter ID) ”and“ MAV (working parameter value) ”.

Here, “MAV (working parameter value)” is “parameter value actually required by the digital watermark insertion core 20 for processing”.

The message interpreting system 1 accompanying the digital watermark insertion processing of the content performed using such various data.
0 will be described with reference to FIGS. The content creator or provider converts the processing policy of digital watermark insertion into a message. This message contains "ME
"I", "MES", "MEV", that is, "MEI (message parameter ID)", which is "ID (identification information) for distinguishing the type of message", "Parameter indicating tolerance of interpretation of message""MES
(Message parameter scope) "," MEV (message parameter value) "which is" message value "
including.

Then, the content creator or provider gives the message including these “MEI”, “MES”, and “MEV” to the message interpretation system 10 of the digital watermark insertion device 100, Is given to the digital watermark insertion core 20 of the digital watermark insertion device 100 to start the process.

Then, first, the controller 12 provided in the message interpretation system 10 receives the ID (MAI) of the parameter required for the digital watermark insertion processing from the digital watermark insertion core 20 (step S in FIG. 4).
1).

That is, the creator of the algorithm of the digital watermark insertion apparatus 100 has given the ID (MAI) of the insertion core parameter used in the digital watermark insertion core 20 to the digital watermark insertion core 20 in advance. Then, prior to the processing of the content, the controller 12 included in the message interpretation system 10 in the digital watermark insertion device 100 receives the ID (MAI) of this parameter from the digital watermark insertion core 20. This state is t1 in FIG.

Next, the controller 12 included in the message interpreting system 10 fetches a processing policy (processing message) regarding the above-mentioned content processing method provided from outside (step S2 in FIG. 4). This state is t2 in FIG.

Thereafter, the controller 12 sends “MPL”, “MASP”, and “MPL” as information sets for each “MAI” in the memory 11 provided in the message interpretation system 10.
From “MPIP”, select “MAI (Parameter I
D) is a “MEI (message parameter ID)” that can be converted into the required format. Specifically, in “MPIP (marking parameter interpretation principal)” in the memory A search is made to see if there is any interpretable message format specified by “MEI (message parameter ID)” (step S3 in FIG. 4).

Then, "MAI (parameter ID)"
"MEI (Message Parameter ID)"
Is determined to exist. As a result, "MAI
If there is no “MEI (message parameter ID)” required by “(parameter ID)”, the process is stopped because the digital watermark insertion core 20 is not a target (FIG. 4). Step S4),
"MEI" required by "MAI (parameter ID)"
If (message parameter ID) "is present, the digital watermark insertion core 20 is a target for inserting the target digital watermark, and the target digital watermark can be inserted. The operation proceeds to the actual work of interpretation (step S4 in FIG. 4).

The actual operation of interpreting a message is performed as follows. The controller 12 of the message interpretation system 10
First, it is determined whether or not the intention of the content creator or the content provider can be interpreted by a procedure designated by the algorithm creator (step S5 in FIG. 4).

Specifically, the MPL of the corresponding processing core parameter and the MEL of the message to be interpreted are evaluated by a specific function, and the evaluation value is determined by the allowable level (MES) specified by the content creator or the content provider. ) Is determined (step S6 in FIG. 4). Then, if it is within the allowable level (MES), the actual interpretation is started, and if it is out of the allowable range, the processing is stopped.

In step S6, the "permissible level (M
ES), the actual interpretation starts.

First, the actual interpretation is performed according to the rules described in MPIP, which describes "rules for calculating each parameter value required by the digital watermark insertion core 20". "MSP (Message Parameter Scaling Principle)"
EV (message parameter value) ”to“ MASP
(Marking scaling principal) ”is converted to“ MAV (working parameter value) ”(step S7 in FIG. 4), which is t3 in FIG.

Then, the conversion result is notified to the digital watermark insertion core 20 in a pair with "MAI (marking parameter ID)" (step S8 in FIG. 4). This state is t4 in FIG.

In this manner, the digital watermark insertion core 20 receiving the pair of the conversion result and “MAI” performs a digital watermark insertion process on the content based on the pair, and obtains the digital watermark-added content. Content will be created and output.

The above is a schematic description of the present invention, which is an example of a basic watermark insertion device. Next, an actual application example will be described. The first and second application examples described below are application examples for MPEG2 moving image data,
This relates to a case where a parameter relating to a digital watermark processing intention described by an information provider is converted into a parameter required by two processing systems having different algorithms and delivered. The third application example is a moving image, a still image, and a sound.
This relates to a case in which a set of digital watermark processing parameters described by an information provider are converted into respective data processing parameters and delivered to a content in which data is combined. The fourth to sixth application examples are these extended application examples.

In the seventh application example, the message interpretation system has a function of comparing (monitoring) input and output information of the processing core, and the processing content of the processing core deviates from the intention of the right holder. This is an example of a case in which a function is provided for canceling the processing when it is performed.

(First Application Example) A first application example has the configuration shown in FIG. That is, in the figure, 100a is a first digital watermark insertion device, and 100b is a second digital watermark insertion device. Among these, the first digital watermark insertion device 100a includes a message interpretation system 10a and a digital watermark insertion core 20a, and the second digital watermark insertion device 100b includes a message interpretation system 10b and a digital watermark insertion core 20b. Become.

The first digital watermark insertion device 100a and the second
Is basically the same,
As described above, in this case, the digital watermark insertion cores 20a and 20b are cores that employ different types of digital watermark algorithms. Therefore, the message interpretation systems 10a and 10b are adapted to correspond to them.

In the application example described here, when digital watermark data is added to moving image content based on MPEG2 and distributed, the two types of digital watermark algorithm processing devices equipped with a message interpretation mechanism are used to process each content. Is an example relating to a system capable of distributing content by performing the following.

There are two types of insertion processing apparatuses having different algorithms for watermark insertion processing. Of these, the digital watermark insertion processing of the method designated by the creator or provider of the content can be selectively designated and executed. , And the message is given to the digital watermark insertion devices 100a and 100b, which are digital watermark insertion mechanisms. The message interpreting systems 10a and 10b of the respective devices interpret the messages and convert the messages to parameters required by the core part. If a conversion rule for conversion is prepared, a digital watermark insertion process can be performed on the content.

That is, the digital watermark insertion device 100a,
100b, among these, the digital watermark insertion device 1
The message interpreting system 00a further has a function of determining whether a message that can be converted into a parameter required by its own core block is specified in the external message, in addition to the function of the message interpreting system 10 in the configuration of FIG. 10a and the message parameter ID is “MEI
It has a digital watermark insertion core 20a based on an algorithm that requires a parameter of 50 ″, and the digital watermark insertion device 100b determines whether a message that can be converted into a parameter required by its own core block is specified in the message. The message interpreting system 1 further has functions in addition to the functions of the message interpreting system 10 having the configuration of FIG.
0b and the message parameter ID is “MEI 51”
Watermark insertion core 20 using an algorithm that requires
with b.

In this case, that is, in the present system in which the processing speed of the digital watermark insertion can be specified, the required processing parameters and “MEL”, “MESP”,
FIG. 6A shows a configuration example of the determination parameters such as “MPL”, “MASP”, and “MPIP”. FIG. 6B shows request processing parameters required by the digital watermark insertion core 20a and determination parameters such as "MPL", "MASP", and "MPIP", and request processing required by the digital watermark insertion core 20b. Parameters and “MP
FIG. 6C shows determination parameters such as “L”, “MASP”, and “MPIP”.

That is, the external message is as shown in FIG.
As shown in FIG. 3, "MEI 1" (this means "MEI" is "1"), "MES" is "2", and "MEV" is "5" are described. “MEI 1” is a parameter that specifies the strength of watermark insertion.

Request processing parameters required by the digital watermark insertion core 20a and related “MEL”, “MES”
The determination parameters such as “P”, “MPL”, “MASP”, and “MPIP” are “MAI 5” as shown in FIG.
0 "(this means" MAI "is" 50 ")," MPL "
Is "2", "MASP" is "" selection 1 "", "" selection 2 "" and "" selection 3 "", and "MPIP"
When "MEV" of a message whose "MEI" is "1" is "0" to "3", "" selection 3 "" and "MEV" of a message whose "MEI" is "1" is "4" to If "6", "" selection 2 "", and "MEI" is "1", "MEV" of the message is "7" to "9", "" selection 1 ""
Is described.

Here, “MAI 50” is replaced with “MPEG2
This is a parameter for specifying the number of frames in which the same watermark data is inserted.

The message interpreting system 10a is "MPL which is a value used as a scale for evaluating the interpretation tolerance when the message interpreting system 10a interprets a parameter."
(Marking parameter level) "," MASP (Marking Scaling Principle) "which is for" giving meaning of parameter values required by the digital watermark insertion core 20a "," Parameters required by the digital watermark insertion core 20a ""MPIP (Marking Parameter Interpretation Principal)", which is a description of a rule for calculating a value, has "MPL" at level "2" in the case of FIG. 6B. , "MASP" are of three types: "selection 1" for all frames, "selection 2" for I and P frames, and "selection 3" for I frames only. "MPIP" as a rule for calculating a parameter value required by the digital watermark insertion core 20 is "MEIP". "" Is "1", the parameter "MEV" is "0" to "3", "" selection 3 "", when "MEV" is "4" to "6", "" selection 2 "", When “MEV” is “7” to “9”, it indicates ““ selection 1 ””.

As shown in FIG. 6C, the request processing parameter and the related judgment parameter set in the digital watermark insertion core 20b are "MAI 51" (this is "MAI 51").
I ”means“ 51 ”,“ MPL ”is level“ 3 ”,
"MASP" is "" selection 1 "" and "" selection 2 "" and "" selection 3 "", and "MPIP" is "MIP".
“MEV” of the message whose “EI” is “1” is “0” to
If “2”, ““ selection 1 ””, and “MEI” is “1” and “MEV” is “3” to “4”, ““ selection 2 ”” and “MEI” are “1”. Is described as "selection 3" when "MEV" of the message "" is "5" to "9".

Here, “MAI 51” is replaced with “MPEG2”.
This is a parameter of the moving image watermark insertion algorithm, and has a meaning of "designating how strong the digital watermark data is to be encrypted".

The digital watermark insertion core 20b having an algorithm capable of “encrypting digital watermark data with a specified strength” has a message parameter ID “M”.
AI51 ".

The message interpreting system 10b is “MPL” which is “a value used as a scale for evaluating the interpretation tolerance when the message interpreting system 10 interprets a parameter”.
(Marking parameter level) "," MASP (Marking Scaling Principle) "which is" for giving meaning of each parameter value required by the digital watermark insertion core 20b "," Required by the digital watermark insertion core 20b It has “MPIP (Marking Parameter Interpretation Principal)” which is a rule in which the calculation of each parameter value is described. The content of the “MPIP” is “MPL” in the case of FIG. 3 ”and“ MASP ”“ encrypt with a 4-bit key ”
"Selection 1" indicating "encryption with an 8-bit key" and "" selection 3 "" indicating "encryption with a 16-bit key" Three types are possible, and "MP as a rule for calculating each parameter value required by the digital watermark insertion core 20b"
“IP” is the “MEI” of the message whose “MEI” is “1”.
When "V" is "0" to "2", "" selection 1 "", "ME
"MEV" of the message whose "I" is "1" is "3" ~
"4" indicates "selection 2" and "MEI" indicates "selection 3" when "MEV" of the message of "1" is "5" to "9". I have.

In order to interpret a message given from the outside and convert the message content into a request processing parameter correspondence, the memory 11 of the message interpretation systems 10a and 10b has "MEL", "MESP", "MP
Necessary information such as "L", "MASP" and "MPIP" is stored as a library.

That is, the memory is the digital watermark insertion device 1
00 has information such as the conditions of the digital watermark insertion core 20 incorporated therein and possible setting ranges as a digital watermark insertion core parameter ID library.

In the present system, digital watermark insertion processing using two different types of algorithms can be selected. Digital watermark insertion core 2 in digital watermark insertion device 100a
No. 0a is equipped with a digital watermark insertion core that requires a parameter of “MEI 50”.
The parameter “0” has a structure as shown in FIG. 6B, whereby the watermark data is inserted only in [i] MPEG2 I frame, and in [ii] I and B frames only. When inserting [iii] When inserting into all frames, it can be specified in one of three ways.

When the message parameter ID is “MEI”
For the parameter "1", conversion of the message parameter value MEV is performed, and the designated value (M
Conversion to ASP) is specified by the marking parameter interpretation principal MPIP.

On the other hand, the digital watermark insertion device 100b, which is a digital watermark insertion mechanism, has an MPE that requires a parameter of “MAI 51” that is a marking parameter ID.
A digital watermark insertion core 20b for a G2 moving image is mounted. The parameters required here have a structure as shown in FIG. 6, and can specify the length of the key when encrypting the digital watermark data.

"MEI" for specifying the strength of watermark insertion
It is specified by MPIP that the conversion of the message value MEV for the parameter of “1” and conversion to the specified value (MASP) of this parameter are performed.

Now, the message interpreting system 10a of the digital watermark insertion device 100a transmits the M
The value of AI is received, and the inserted core parameter ID library corresponding to the value “50” is searched from its own built-in memory.

If the corresponding information cannot be obtained, the processing is stopped. If it is obtained, it waits for a content message. The message interpreting system 10a that has received the “MEI 1” message searches the core parameter ID library for an MPIP for “MEI 1”.

As a result of the search, if no data exists, the process is terminated. If it exists, the conversion processing feasibility is evaluated. Specifically, the absolute value of the difference between the MEL of the message and the marking parameter level MPL of the processing parameter is obtained, and if the value is not within the range of the “MES (permissible level)” of the message, the process ends. On the other hand, “MEL (message parameter level)”
If the difference between “MPL (marking parameter level)” and “MPL (marking parameter level)” is within the range of “MES”, the processing is continued.

In the example of FIG. 6, “MEL” of the “MEI 1” message is “5”, and the digital watermark insertion core 2
The processing parameter “MPL” at 0a is shown in FIG.
"2" as shown in FIG.
Is the absolute value of “3”. In contrast, FIG.
The value of “MES” in the message shown in FIG. 9A is “2” and the absolute value is “3”, which is outside the range of the value “2” of “MES”. Parameters do not meet the processing continuation conditions.

If the processing continuation condition is satisfied, in that case, the message interpretation system 10a then converts the message parameter value MEV according to the inserted core parameter MPIP.

In the example of FIG. 6, since the value of the message parameter value MEV in the parameter of “MEI 1” designating the watermark insertion strength is “5”, “MASP” is selected as “MASP” by MPIP. Is notified to the digital watermark insertion core 20a. Then, the digital watermark insertion core 20a performs a process of inserting a predetermined digital watermark into the I frame and the P frame of the input MPEG2 video stream.

On the other hand, on the side of the digital watermark insertion device 100b having the digital watermark insertion device 20b of which strength can be selected, the message interpretation system 10b receives the value of the MAI (marking parameter ID) from the digital watermark insertion core 20b, and The inserted core parameter ID library corresponding to the value “51” is searched from its own built-in memory.

As a result of the search, if the corresponding information cannot be obtained, the processing is stopped. On the other hand, when the corresponding information is obtained, the mobile terminal waits for a content message.
The message interpreting system 20b that has received the “MEI 1” message stores “MEI 1” in the core parameter ID library.
A search is performed to determine whether “MPIP” for “I1” exists.

If the result of the search does not exist, the process ends. If it exists, the conversion processing feasibility is evaluated.

As described above, this is the same as the message “MEL”
And the absolute value of the difference between the processing parameter “MPL”
It is checked whether the value is within the range of “MES (acceptable level)” indicated in the message. If the value is not within the range, the process is terminated. If the value is within the range of “MES”, the process is continued. I do.

In the example of FIG. 6, the message “MEL”
Is "5" and the processing parameter "MPL" is "3".
Therefore, the absolute value of the difference is “2”. The value of “MES” of the message is “2”, and the absolute value is “2”, which is within the range of the value “2” of “MES”. Therefore, the parameter of this example matches the processing continuation condition. Will be. Therefore, the message interpretation system 10b then performs conversion of “MEV” in the message according to the inserted core parameter “MPIP”.

In the example of FIG. 6, the value of “MEV” is “5”.
Therefore, “MEV” corresponds to “5” to “9”, which is “selection 3” indicating “encrypt with a 16-bit key” in FIG. 6C. From "MP
“MASP” is selected by the “IP”, and “selection 3” is selected and notified to the digital watermark insertion core 20b. The digital watermark insertion core 20b uses the 16-bit key for the input MPEG2 video stream. The digital watermark insertion processing is performed by encryption, and the MPEG-2 video stream after the digital watermark insertion processing is output to the outside.

As described above, in this example, two types of digital watermark insertion devices each having a different digital watermark insertion algorithm are prepared, "MEI" is input to these digital watermark insertion devices, and the content is input. ,
Each digital watermark insertion device interprets "MEI", changes the message to a message that can be processed by its own digital watermark insertion algorithm, gives the message to a processing core according to the digital watermark insertion algorithm, and outputs a corresponding digital watermark indicated by the message. The content is subjected to an insertion process and the content is output.

(Second Example of Application) Next, messages relating to the processing speed of digital watermark insertion designated by the creator or the provider of the content are individually sent to the electronic watermark inserting devices 100a and 100b as the electronic watermark inserting mechanism. An example that is interpreted as follows will be described as a second application example.

The second application example has a configuration as shown in FIG. The configuration of FIG. 7 is basically the same as the configuration of FIG. 6 which is the first application example, but here, a message regarding the processing speed of digital watermark insertion designated by the creator or provider of the content is described. The electronic watermark insertion devices 100a and 100b, which are electronic watermark insertion mechanisms, can be interpreted individually.

That is, the digital watermark insertion device 100a,
100b, among these, the digital watermark insertion device 1
00a is a message interpretation system 10a further having a function of interpreting a message relating to the processing speed of digital watermark insertion.
And a digital watermark insertion core 20a based on an algorithm for requesting a processing request parameter with a message parameter ID of “MEI 50”, and the digital watermark insertion device 100b further has a function of interpreting a message relating to the processing speed of digital watermark insertion. Message interpretation system 10b
And an electronic watermark insertion core 20b based on an algorithm that requires the message parameter ID to be “MEI 52”.

FIG. 8A shows an example of the configuration of the required processing parameters in this system in which the processing speed of digital watermark insertion can be specified in this case. Also, request processing parameters required by the digital watermark insertion core 20a, and “MEL”, “MESP”, “MPL”, “MAS”
The determination parameters such as “P” and “MPIP” are shown in FIG.
FIG. 8C shows request processing parameters and determination parameters set in the digital watermark insertion core 20b.

As shown in FIG. 8A, the “MEI” message is “MEI 2” (this is the case where “MEI” is “2”).
), “MES” is “2”, “MEV” is “5”, and “MIN” is “0” and “Ma” as “MESP”.
It is defined that “x” is “9.” “MEI”
"2" indicates a parameter for specifying the watermark insertion processing speed.

Generally, there is a trade-off between the insertion speed of the watermark and the difficulty of removing the watermark, and it is meaningful for the information provider to specify the speed.

Request processing parameters required by the digital watermark insertion core 20a, and “MEL”, “MESP”,
As shown in FIG. 8B, determination parameters such as “MPL”, “MASP”, and “MPIP” are “MAI 50” (this means “MAI” is “50”), and “MPL” is “2”. , "MASP" are "" selection 1 "" and "" selection 2 "" and "" selection 3 "", and when "MEV" is "0" to "3" as "MPIP", "" selection 3 """" And "MEV" are "selection 2" when "4" to "6" and "MEV" is "selection 1" when "MEV" is "7" to "9". ing.

Here, “MAI 50” means “MPEG2
This is a parameter for specifying the number of frames in which the same watermark data is inserted. Also, the digital watermark insertion core 20a sets the message parameter ID to “MEI”.
This is a digital watermark insertion core based on an algorithm requiring 50 ″.

The message interpretation system 10a includes "MPL (marking parameter level)", which is a "value used as a scale for evaluating the interpretation tolerance when the message interpretation system 10 interprets a parameter", and "digital watermark insertion core 20".
"MASP (Marking Scaling Principle)", which is for "giving the meaning of each parameter value required", and "Rules for calculating each parameter value required by the digital watermark insertion core 20" are defined. "MPIP (Marking Parameter Interpretation Principal)" is defined, and the contents are as shown in FIG. 8 (b). And "selection 2" for I and P frames, and "selection 3" for I and P frames only. “MPIP” as a rule for calculating each parameter value required by the insertion core 20 is such that “MEV” of a message whose “MEI” is “1” is “0” "3""" Select 3 "" in case of, "MEI" is "1""MEV" the message of "4" - in the case of the "6""" Selection 2 "",
“MEV” of the message “MEI” is “1” is “7”
In the case of ~ "9", it indicates "" selection 1 "".

Also, the required processing parameters required by the digital watermark insertion core 20b, and “MEL” and “MES”
The determination parameters such as “P”, “MPL”, “MASP”, and “MPIP” are “MAI 5” as shown in FIG.
2 "(this means" MAI "is" 52 ")," MPL "
Is “level 4”, “MASP” is “selection 1” and “selection 2”, and “MPIP” is “MEP”.
When "V" is "0" to "5", "" selection 1 "" and "ME
When "V" is "6" to "9", it is described that it is "" selection 2 "".

Here, “MAI 52” is the same as “MPEG2
This is a parameter of the moving image watermark insertion algorithm.
Select one processing system. " The digital watermark insertion core 20b is an electronic watermark insertion core based on an algorithm that requests a parameter whose message parameter ID is “MAI 52”.

The message interpreting system 10b includes "MPL (marking parameter level)", which is "a value used as a scale for evaluating interpretation tolerance when the message interpreting system 10 interprets a parameter", and "digital watermarking core 20".
"MASP (Marking Scaling Principle)", which is for "giving the meaning of each parameter value required", and "Rules for calculating each parameter value required by the digital watermark insertion core 20" are defined. "MPIP (Marking Parameter Interpretation Principal)" is defined, and the contents are as shown in FIG. 8C, where "MPL" is level "4" and "MASP" is "speed Two types of “selection 1” indicating “slow processing” and “selection 2” indicating “high-speed processing” are possible. “MPIP” as a rule for performing the calculation is “MEV” from “0” to
When "5", "" selection 1 "" and "MEV" are "6" ~
"9" indicates "selection 2".

As shown in FIG. 8A, in the message of the creator or provider of the content and the request processing parameters of the digital watermark insertion cores 20a and 20b,
The message “MEI 2” is a parameter that specifies the processing speed of watermark insertion, and takes a value from “0” to “9” as in “MESP” in this message. Incidentally, "MESP (Marking Scaling Principle)" is "for giving the meaning of each" MEV "value".

The function of the "MAI 50" parameter required by the digital watermark insertion core 20a of the digital watermark insertion device 100a is as described in the first application example.

On the other hand, the parameter of the marking parameter ID “MAI 52” required by the digital watermark insertion core 20b of the digital watermark insertion device 100b receives the parameter “MAV (marking parameter value)”, and the digital watermark insertion core 20 receives the parameter. It has a function of selecting one of two processing systems having different processing operations.

Now, in the digital watermark insertion device 100a, the message interpretation system 10a transmits the “MA” of the digital watermark insertion core 20a from the digital watermark insertion core 20a.
I (marking parameter ID) ". The value of" MAI "of the digital watermark insertion core 20a is" 5 ".
0 "and the inserted core parameter ID library whose marking parameter ID is" 50 "is searched from the memory of the own (message interpreting system 10a).

As a result, if the corresponding information cannot be obtained, the processing is stopped. On the other hand, when the corresponding information is obtained, the message interpreting system 10a waits for a content message.

As an external message for the digital watermark insertion processing of the content, in this example, FIG.
The “MEI 2” message of (a) is sent. The message interpreting system 10a that has received the “MEI 2” message determines whether the MPIP for “MEI 2” exists in the inserted core parameter ID library whose marking parameter ID is “50” in its own memory. Search for.

As a result, if the data does not exist, the processing is terminated. If the data exists, the feasibility of the conversion process is evaluated.

The conversion processing feasibility evaluation is specifically as follows. The message interpreting system 10a firstly receives the message “MEL” and the processing parameter “MP”.
The absolute value of the difference of “L” is taken.The difference value must be within the “MES (message parameter scope)” of the message, that is, the “MES” that is a “parameter indicating the permissible interpretation of the message”. If it is within the range, the process is continued.

In the case of the example of FIG. 8, the message "MEL"
Is "5" and the processing parameter "MPL" in the digital watermark insertion core 20a is "2" as shown in FIG. 8B, so that the absolute value of the difference between "MEL" and "MPL" is "5". 3 ". On the other hand, the value of “MES” in the message shown in FIG. 8A is “2”, and the absolute value is “3”, which is outside the range of the value “2” of “MES”. Therefore, the parameters in this example do not meet the processing continuation conditions.

Therefore, the processing ends at this stage, and the digital watermark insertion processing is not performed.

If the allowable level “MES” is “3”
If this is the case, the message interpreting system 10a then follows the inserted core parameter “MPIP (Marking Parameter Interpretation Principal)” and sets “M
EV (message parameter value) ".

That is, "MPIP" is "a description of rules for calculating each parameter value required by the digital watermark insertion core 20a", and is specifically interpretable MEI (message "MAV" from the parameter ID) and its MEV (message parameter value).
(Marking parameter value) "is calculated.

In this example, since the value of “MEV (message parameter value)” in the received “MEI 2” message is “5”, “when“ MEV ”is“ 4 ”to“ 6 ”, "Selection 2""", and therefore, the message interpretation system 10a
As a result, “MASP” is a process of “inserting a predetermined digital watermark into I frame and P frame”.
Is notified to the digital watermark insertion core 20a. As a result, the digital watermark insertion core 20a outputs the I frame, P of the MPEG2 video stream input as the content.
A process of inserting a predetermined digital watermark into a frame is performed. Then, the digital watermark inserted MPEG2
Output the video stream to the outside.

On the other hand, in the digital watermark insertion device 100b, the message interpreting system 10b receives the value of “MAI” from the digital watermark insertion core 20b and stores the inserted core parameter ID library corresponding to the value “52” itself. Search from memory.

As a result, if the corresponding information is not obtained, the process is stopped. If the information is obtained, the message interpreting system 10b waits for the content message.

In this example, the transmitted content message is “MEI 2”.

Therefore, the message interpreting system 10b that has received the “MEI 2” message searches the core parameter ID library for whether or not the MPIP for “MEI 2” exists. As a result, if not present,
The processing is terminated, and the conversion processing feasibility is evaluated if it exists.

The conversion processing feasibility evaluation is, specifically, to take the absolute value of the difference between the “MEL” of the message and the “MPL” of the processing parameter. If it is not within the range of “MES”, the process is terminated, and if it is within the range, the process is continued.

In the case of the example of FIG. 8, the message "MEL"
Is “5” and the processing parameter “MPL” is “4”.
Therefore, the absolute value of the difference is “1”. The value of “MES” of the message is “2”, and the absolute value is “1”, which is within the range of the value “2” of “MES”. Will be. Therefore, the message interpretation system 10b then performs conversion of “MEV” in the message according to the inserted core parameter “MPIP”.

In the example of FIG. 8, the value of “MEV” is “5”.
Therefore, “MEV” corresponds to “0” to “5”, which is “selection 1” indicating “high-speed processing” in FIG. , "MASP" is selected as "selection 1" and notified to the digital watermark insertion core 20b, and the digital watermark insertion core 20b applies a digital watermark with a slow processing speed to the input MPEG2 video stream. Then, the MPEG2 video stream after the digital watermark insertion processing is output to the outside.

As described above, according to the second application example, the digital watermark insertion devices 100a and 100b, which are digital watermark insertion mechanisms, transmit a message regarding the processing speed of digital watermark insertion designated by the creator or provider of the content. , Each of which can be interpreted individually to perform a digital watermark insertion process at a specified speed.

Next, the information provider decides on multimedia data in which three types of data, ie, moving image data in the MPEG2 format, still image data in the JPEG format, and audio data in the MPEG2 format, are combined.
An example in which a digital watermark is added to each content with one message will be described as a third application example.

(Third Application Example) A third application example has the configuration shown in FIG. That is, in the figure, reference numeral 100 denotes a digital watermark insertion device, and the digital watermark insertion device 100 includes a message interpretation system 10 and a digital watermark insertion core 20.

In this application example, the information provider sends a single message to multimedia data in which three types of data, ie, moving image data in the MPEG2 format, still image data in the JPEG format, and audio data in the MPEG2 format are combined. In this example, a digital watermark is added to the content of the digital watermark insertion core 2.
0 is moving image data in MPEG2 format, JPE
The configuration is such that a digital watermark can be added to each content with one message for multimedia data in which three types of data, that is, still image data in G format and audio data in MPEG2 format, are combined.

FIG. 1 shows an example of a message specified by the information provider.
0 (a). As shown in the figure, this message
“MEI 3” (this means “MEI” is “3”),
"MES" is designated as "5", "MEV" is designated as "5", "MEL" is "5", and "MIN" is "0" and "Max" is "9" as "MESP". Is defined.

The message of “MEI 3” is a parameter for specifying the watermark insertion strength, and takes a value from “0” to “9” as in “MESP”.

"MPL" (or "MEL")
Is data that serves as a parameter for determining interpretation tolerance, and is prepared by a third party such as TTP (a trusted third party) instead of the algorithm creator (or content creator) who is the direct party. If it is put to practical use, it is useful from the viewpoint of ensuring fairness of judgment.

On the other hand, the digital watermark insertion core 20 of this application example
FIG. 10B shows an example of three parameters accepted by
(C) and (d) show.

FIG. 10 identified by "MAI 50"
The request processing parameter of (b) is as described in the first application example.

FIG. 10 identified by "MAI 60"
The request processing parameter (c) is requested by an insertion core that performs digital watermark insertion processing on MPEG2 audio data, and inserts digital watermark data in units of seconds specified by “MAV”.

The request processing parameters required by the digital watermark insertion core 20 and “MEL”, “MESP”,
The determination parameters such as “MPL”, “MASP”, and “MPIP” (FIG. 6B) are “MAI 60” (this means “MAI” is “60”), “MPL” is “2”,
"MASP" is "1" seconds to "10" seconds, and "M
“1” for “MEV” of “MEI 3” as “PIP”
Is added. "

FIG. 10 identified by "MAI 61"
The request processing parameter (d) is a digital watermark insertion algorithm for a JPEG still image, and is a target unit “MCU” which is the smallest unit block constituting one still image. An electronic watermark adding process is performed in the MCU.

The request processing parameter (FIG. 6D) set in the digital watermark insertion core 20 is “MAI 61”.
(This means that "MAI" means "61".
EG still image watermark insertion algorithm parameters, which indicate the watermark insertion interval in units of "MCU"), "MPL" is "1", "MASP" is "1" 100 "MCU intervals, and
The description "MPIP" states that "the value obtained by adding" 1 "to" MEV "of" MEI 3 "and multiplying it by 10 is" MAV "".

Now, the message interpretation system 10 in the digital watermark insertion device 100 receives the value of “MAI” from the digital watermark insertion core 20 and obtains the value “50”,
Inserted core parameter ID corresponding to “60” or “61”
Search the library from its own memory.

If the message interpretation system 10 finds no corresponding information as a result of the search, it stops the processing. On the other hand, if it is obtained, it waits for an external message given by the content provider.

Assuming that the watermark insertion apparatus 100 receives the “MEI 3” message as the external message, the message interpreting system 10 determines whether “MPIP” for “MEI 3” exists in the core parameter ID library. Search for. As a result, if there is no such file, the process ends. However, if it exists, the conversion processing feasibility is evaluated.

More specifically, the external message “MEL”
And the absolute value of the difference between the processing parameter "MPL".
If the absolute value is not within the range of the message "MES (permissible level)", the process is terminated, and if it is within the range, the process is continued.

In the example of FIG. 10, the external message “M
EL is "5", and the processing parameter "MPL" is "2" in the case of a moving image and an audio, so the absolute value of the difference is "3".
The value of “S” is “5”, the absolute value is “3”, and “ME”
S is within the range of the value “5.” Also, since the still image processing parameter “MPL” is “1”, the difference from “5” of the message “MEL” is obtained. Is "4", and the value of "MES" of the message is within the range of "5".

Accordingly, since the parameters in this example conform to the processing continuation conditions in the digital watermark insertion core 20, the processing is continued.

Since the value of “MEV” is “5”, in the case of an MPEG-2 moving image, “MASP” is selected by “MPIP”, and “MASP” is selected by “selection 2”. Then, the digital watermark insertion core 20 having received the notification inserts a predetermined digital watermark into the I frame and the P frame of the input MPEG2 video stream.

In the case of MPEG2 audio data,
“MPV” notifies “MAV 6” to the digital watermark insertion core 20, and the digital watermark insertion core 20 performs digital watermark insertion processing on the input MPEG2 audio data in units of 6 seconds. That is, the message "ME
V is “5”, and in FIG. 10C, “MPIP” is a value obtained by adding “1” to the value of the “MEV” in the “MEI 2” message, that is, “6” indicates the digital watermark insertion processing. Since this is an interval to be performed, the digital watermark insertion core 20 performs a digital watermark insertion process on the input MPEG2 audio data in units of 6 seconds.

In the case of JPEG still image data, “M
The value obtained by adding “1” to the value “5” of “MEV” in “MAI 2” by “PIP” and multiplying it by 10, ie, “6”
The message interpreting system 10 notifies the digital watermark insertion core 20 that "0" is changed to "MAV", and the digital watermark insertion core 20 applies a digital watermark to the input JPEG still image data in units of "60" MCUs. Perform insertion processing.

As described above, according to the third application example, the information provider makes the moving image data of the MPEG2 format,
For multimedia data in which three types of data, ie, still image data in EG format and audio data in MPEG2 format, are combined, a process of adding a digital watermark to each content by one external message is performed according to the intention of the content provider. Will be able to do it.

(Fourth Application Example) FIG. 11 shows a fourth application example. In the configuration shown in FIG. 11, an information provider provides a message and content to an information user via a data transfer unit 110, and the information user side includes a message interpretation system 10 and a digital watermark insertion core 20. The digital watermark is inserted into the content corresponding to the message sent by the information provider, and the digital watermark is provided to the user.

The functions of the message interpretation system 10 and the digital watermark insertion core 20 use the basic configuration or those described in the first to third application examples.

In this way, the information provider simply sends the message and the content to the user, and the information user side is provided with the digital watermark inserted into the content corresponding to the message sent by the information provider. That is, the information provider can variously change the digital watermark insertion of the provided content by changing the message content corresponding to the user. Therefore, it is possible to provide the user with various service levels.

Further, even when a plurality of users use information in an environment in which different digital watermark processing algorithms are implemented, the information provider can fulfill the intention only by describing one type of message. it can.

(Fifth Application Example) FIG. 12 shows a fifth application example. In the configuration shown in FIG. 12, the information provider transmits the message and the content after the digital watermark insertion processing to the data transfer unit 1.
10 to the information user, and the information user receives the information via the digital watermark insertion device 100B including the message interpretation system 10B and the digital watermark insertion core 20B, thereby sending the information to the information user. In this configuration, a digital watermark is further inserted into the content in response to the message and provided to the user.

On the information provider side, the message interpreter 10A and the digital watermark insertion core 20 are also provided on the information provider side in order to obtain the content after the digital watermark insertion processing.
In addition to the provision of the digital watermark insertion device 100A provided with A, the content subjected to the digital watermark insertion processing through the digital watermark insertion core 20A is provided to the information user through the data transfer means 110 together with the message.

The functions of the message interpretation systems 10A and 10B and the digital watermark insertion cores 20A and 20B use the basic configuration or those described in the first to third application examples.

In this manner, the information provider can send the message and the content having undergone the digital watermark insertion processing to the user, and the information user can insert the digital watermark into the content in response to the message sent by the information provider. Thus, the information provider can change the state of the digital watermark insertion of the provided content by changing the message content corresponding to the user. Therefore, it is possible to provide the user with various service levels.

Further, even when a plurality of users use information in an environment in which different digital watermarking algorithms are implemented, the information provider can fulfill the intention only by describing one type of message. it can.

In the above description, the digital watermark provided by the system is inserted into the content and provided to the user. The unique watermark of the user of the information can be inserted as the digital watermark information, and the content user can be identified. There is also an application as a system that makes it possible. Therefore, this example will be described next as a sixth application example.

(Sixth Application Example) FIG. 13 shows a sixth application example. In the configuration of FIG. 13, the information provider transmits the message and the content after the digital watermark insertion processing to the data transfer unit 1.
10 to the information user, and the information user receives the information via an electronic watermark insertion device 100C having a message interpretation system 10B and an electronic watermark insertion core 20C, thereby transmitting the information to the information user. In this configuration, a digital watermark unique to the user is further inserted into the content in response to the message and provided to the user.

In order for the information provider to be able to obtain the content after the digital watermark insertion processing, the information provider must also provide the message interpreting system 10A.
A digital watermark insertion device 100A having a digital watermark insertion core 20A and a digital watermark insertion core 20A.
The content subjected to the digital watermark insertion processing through A is provided to the information user via the data transfer means 110 together with the message.

The functions of the message interpreting systems 10A and 10B and the digital watermark insertion cores 20A and 20C use the basic configuration or those described in the first to third application examples, but insert a digital watermark unique to the user. In order to enable this, the digital watermark insertion core 20C is
And a digital watermark insertion unit 22.

Here, the insertion unit configuration system 21 is a means for generating watermark information unique to the user.
Reference numeral 2 has a function of inserting user-specific watermark information into content received from the information provider and outputting the content.

Therefore, the digital watermark insertion device 1 on the user side
00C message interpretation system 10B
10 to determine whether or not the message received from the provider side via the server 10 meets the processing continuation condition in the digital watermark insertion core 20C (whether or not the processing condition of the digital watermark insertion core 20C is acceptable). If it is checked and conforms, the converted parameters from the message interpretation system 10B are given to the digital watermark insertion core 20C, and the digital watermark insertion core 20C receiving the converted parameters sets the arbitrary or unique position of the received content in accordance with the parameters. To insert watermark information unique to the user.

In this manner, the information provider can send the message and the content having undergone the digital watermark insertion processing to the user, and the information user can use the user-specific digital watermark in response to the message sent by the information provider. Further, the content is provided by being inserted into the content, and the content can be provided in a form in which the source of the content and the distribution destination of the content are embedded as watermark information. Moreover, the information provider can change the state of the digital watermark insertion of the provided content by changing the message content corresponding to the user, and therefore, variously changed the service level for the user. Enable content provision.

Further, even when a plurality of users use information in an environment where different digital watermarking algorithms are implemented, the information provider can fulfill the intention only by describing one type of message. it can.

Next, it is monitored whether or not the digital watermark insertion process can be performed under specified conditions. If the digital watermark insertion process does not match, the process is stopped so that useless processing is not continued. Will now be described as a seventh application example.

(Seventh Application Example) FIG. 14 shows a configuration example of a message interpretation system according to a seventh application example. In the configuration of FIG. 14, a functional block called a content monitor is added to the message interpretation system 10 of the digital watermark insertion device 100.

Reference numeral 13 denotes this content monitor.
The content monitor 13 includes a digital watermark insertion core 20.
Can be interpreted both before the input of the content and the data of the content into which the digital watermark has been inserted by the digital watermark insertion core 20, and whether the intention specified by the user as a message is reflected in the content. Is monitored and the result can be returned to the controller 12.

The controller 12 can control the digital watermark insertion core 20 to continue or stop the digital watermark insertion process.

In the present system, this makes it possible to confirm whether or not the intention specified by the user as a message has been fulfilled not only when interpreting the message but also when actually fulfilling the message. If not, the digital watermark processing core 20 can be instructed via the controller 12 to change the processing content of the content.

The specific procedure for execution will be described below. In this example, a provider of a moving image content based on MPEG2 sends to the controller a message including a content designating, as an S / N ratio, the degree of deterioration of moving image data due to digital watermark insertion as shown in FIG. 12 to indicate the processing content.

In FIG. 15, the digital watermark insertion device 1
00 shows only one, but in the following example, for example,
As shown in FIG. 5, a system in which two types of digital watermark insertion devices 100a and 100b having different watermark insertion processing algorithms are prepared is taken into consideration.

Of the two types, one digital watermark insertion device 100a includes a digital watermark insertion core 20a that inserts a digital watermark into a moving image content and outputs the digital watermark content using a first watermark insertion processing algorithm. MPE
A digital watermark is inserted by replacing the motion vector data, which is a component of the G data, at regular intervals. " The digital watermark insertion device 100a
The digital watermark insertion core 20a requests a request processing parameter and a determination parameter as shown in FIG.

Also, the other digital watermark insertion device 100b
Includes a digital watermark insertion core 20b that inserts a digital watermark into a moving image content and outputs the digital watermark by using a second watermark insertion processing algorithm. For example, “a VLC code of a luminance component, which is a component of MPEG data, A watermark insertion algorithm for MPEG2 moving images having an operation content of "insert digital watermark by replacing at regular intervals" is implemented.

The digital watermark insertion device 100b
The electronic watermark insertion core 20b requests a request processing parameter and a determination parameter as shown in FIG.

FIG. 15A shows request processing parameters specified by the content provider and related judgment parameters. This request processing parameter is “MEI
2 ", which is used by the content provider to specify the degree of deterioration of the image due to the watermark insertion. As shown in FIG. The request processing parameters identified are
It is defined in "MESP" that "MEV" takes a level from "0" to "9". “MEL” of this message is “2”.

Next, the request processing parameters of the digital watermark insertion core 20a and the relevant judgment parameters are shown in FIG.
Shown in The digital watermark insertion core 20a is provided with an MPEG2 moving image watermark insertion algorithm. The outline of the operation is described in "Inserting a Digital Watermark by Replacing Motion Vector Data, Which is a Component of MPEG Data, at Regular Intervals". It was mentioned earlier.

The required parameters of the digital watermark insertion core 20a are identified by “MAI 50”, and three “MAV (marking parameter values)” of “selection 1”, “selection 2”, and “selection 3” for inserting a digital watermark. ) "Can be taken. The meaning of each "MAV" value is "MAS
As described in “P (Marking scaling prince pull)”, in the case of “selection 1”, “replacement every“ 10 ”motion vectors”, and in the case of “selection 2”,
"Replacement every" 50 "motion vectors" and
In the case of “selection 3”, “replacement every“ 100 ”motion vectors” is performed. The interpretation system for the message of “MEI 2” is as described in “MPIP”, and “MEV” indicates “selection 1” from “0” to “3”, and “MEV”
Is “selection 2” for “4” to “6” and “ME”
If "V" is "7" to "9", "selection 3" is selected. “MPL” is defined as “2”.

FIG. 15C shows the required processing parameters of the digital watermark insertion core 20b and the relevant judgment parameters. The watermark insertion algorithm for MPEG2 moving images is implemented in the digital watermark insertion core 20b. The outline of the operation is as follows. "The VLC code of the luminance component, which is a component of the MPEG data, is replaced at regular intervals. Insert it. " The required parameter of the digital watermark insertion core 20b is identified by “MAI 52”, and can adopt “MAV” of “selection 1” and “selection 2” for inserting a digital watermark.

The meaning of each “MAV” value is “MAV”.
As described in “SP”, “selection 1” corresponds to the instruction of “replacement every 100 luminance components”, and “selection 2” corresponds to the instruction of “replacement every 10 luminance components”.

The interpretation system for the message of “MEI 2” is as shown in “MPIP”, “selection 1” when “MEV” is “0” to “5”, and “MEI 2”.
If "V" is "6" to "9", "selection 2" is selected. is there. “MPL (marking parameter level)” is defined as “4”.

The actual processing operation proceeds as follows.
The content provider specifies "MES" as "2" and
It is assumed that the moving image content of EG2 is distributed. Then
In the digital watermark insertion device 100 for inserting a moving image watermark, the content provider “MES” is “2” and “MES” is “2”.
Since the values of “L” and “MPL” are “2”, the interpretation tolerance evaluation (the absolute value of the difference between “MEL” and “MPL”) satisfies the standard of “MES”, and therefore, the message interpretation system 10a Proceeds to the message interpretation stage.

Since the content provider has designated “MEV 5”, “selection 2” is selected from “MPIP” for the “MEI 2” message and transmitted to the digital watermark insertion core 20a. As a result, the digital watermark processing core 20a performs the processing operation “selection 2” at “50”.
An electronic watermark is inserted into the content at every motion vector.

On the other hand, in the digital watermark inserting apparatus 100b for inserting a moving image watermark, the content provider “MES” is “2”, and the values of “MEL” and “MPL” are “2” and “4”, respectively. Because of this, interpretation tolerance evaluation (“ME
Since the absolute value of the difference between “L” and “MPL” satisfies the criterion of “MES (message parameter scope)”, the process in the message interpretation system 10b proceeds to the message interpretation stage.

The content provider has designated “MEV 5”. Therefore, “selection 1” is selected as “MAV” from “MPIP” for the “MEI 2” message and transmitted to the digital watermark insertion core 20b. You.

“Select 1” as “MAV” is “100
Insertion of Digital Watermark for Every Luminance Component ”. for that reason,
The digital watermark insertion core 20 inserts a digital watermark every 100 luminance components.

The content monitor 13 of the digital watermark insertion device 100a is provided with a content digital watermark insertion core 20a.
Has a function of issuing a command to the digital watermark insertion core 20a via the controller 12 to stop the processing if the processing situation does not meet the intention of the content provider. Watermark insertion device 10
0b of the content monitor 13 compares the processing contents of the content by the digital watermark insertion core 20b, and if the processing situation does not meet the intention of the content provider, processes the content to the digital watermark insertion core 20b via the controller 12. It has a function to give an instruction to cancel.

Such a specific processing function by the content monitor 13 is realized by an operation program Mproc, and a value necessary for making a judgment by the operation program Mproc is given as Mval. They are,
Content monitor 1 via controller 13
Handed over to 3.

In the case of this application example, the above-mentioned operation program Mproc has a function of “decoding MPEG data before and after inputting a digital watermark insertion core and evaluating deterioration of the S / N ratio”. There is. And S /
As a result of the N-ratio evaluation, if the deterioration does not fall within the value specified by the value Mval, the content monitor 13 informs the controller 13 of the stop of the digital watermark insertion processing.
a (20b) to stop the processing. And
In response to the stop instruction, the digital watermark insertion core 20 stops the digital watermark insertion processing for the content.

Here, in order to simplify the description, the content monitor 13 instructs the stop of the processing of the insertion core 20 through the controller 12.
When the instruction given to the insertion core 20 through the controller 12 includes not only a processing stop instruction but also a plurality of options, for example, an instruction to adaptively reduce the frequency of watermark insertion to the insertion core 20 through the controller 12 is provided. In addition to issuing an instruction, for example, the controller 12 determines, by using the controller 12, how much the frequency of insertion by a digital watermark should be reduced in order to reduce the degree of S / N degradation under what conditions. 20 is given. "

The operation program Mproc and the value Mval may be stored in the memory 11 or may be provided by a content provider.

As described above, according to this specific example, it is monitored whether or not the digital watermark insertion processing has been performed under the specified conditions, and if not, the processing content is adaptively changed. , A system that can be set from outside can be realized.

Although various specific examples have been described above, in short, the present invention relates to an information providing service in which a plurality of digital watermark insertion algorithms coexist. By creating and providing an external message), it is possible to interpret this and convert it into processing parameters required by each algorithm, and to provide the converted parameters to the corresponding digital watermark insertion algorithm. Digital watermarks can be inserted into the content in a way that reflects it.

Further, when interpreting the intention of the information provider, the information provider can be restricted so that the user's intention is not unlimitedly interpreted.

Therefore, according to the present invention, the description of the processing intention of the content performed by the information provider can be interpreted and executed by each processing system having a different algorithm. Data processing device that enables the distribution of content that inserts and processes a digital watermark that reflects the intention of the content provider beyond the differences in the algorithms of the processing systems in a simple environment. It is extremely useful for

Although various examples have been described, the present invention is not limited to these examples and can be implemented with various modifications. Further, in each of the above-mentioned examples, the information user is the final user of the information. However, the present invention is not limited to this, and it is needless to say that the information user is also a primary user or a service provider.

The method of the present invention described in the embodiments of the present invention can be implemented as a program that can be executed by a computer, such as a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD-ROM, DV).
D), and can be stored in a recording medium such as a semiconductor memory and distributed.

[0191]

As described above, according to the present invention, the intention of the information provider can be expressed without being restricted by the contents of the digital watermark insertion processing system. Therefore, it is possible to easily realize the update of the content of the digital watermark insertion algorithm, the simultaneous use of different processing algorithms, or the expression of the processing intention for the digital watermark adding process for multimedia data in which various data formats are mixed. Further, since the coexistence of a plurality of processing algorithms is facilitated, the applicability of digital watermark insertion in an open network environment, an information providing service for an unspecified number of people, and the like is expanded.

[0192] In a copyright protection system such as an electronic watermark insertion process, fulfilling the intention of the right holder is an important problem. However, since the system has a universal interpretation tolerance of a message, a plurality of electronic watermarks can be used. In an environment where the watermark algorithm coexists, a function for guaranteeing the performance of the intention of the right holder can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the present invention, and is a block configuration diagram for explaining a basic configuration of the present invention.

FIG. 2 is a diagram for explaining the present invention, and is a diagram for explaining a system message and a core parameter in the basic configuration of the present invention.

FIG. 3 is a diagram for explaining the present invention, and is a diagram for explaining processing of a message interpretation system of the system in the basic configuration of the present invention.

FIG. 4 is a diagram for explaining the present invention, and is a flowchart for explaining a processing parameter value calculation procedure in the controller 12 of the system in the basic configuration of the present invention.

FIG. 5 is a diagram for explaining the present invention, and is a block configuration diagram for explaining a first application example of the present invention.

FIG. 6 is a diagram for explaining the present invention, and is a diagram for explaining a configuration example of a message and parameters in the first application example of the present invention.

FIG. 7 is a diagram for explaining the present invention, and is a block diagram for explaining a second application example of the present invention.

FIG. 8 is a diagram for explaining the present invention, and is a diagram for explaining a configuration example of a message and a parameter in a second application example of the present invention.

FIG. 9 is a diagram for explaining the present invention, and is a block configuration diagram for explaining a third application example of the present invention.

FIG. 10 is a diagram for explaining the present invention, and is a diagram for explaining a configuration example of a message and a parameter in a third application example of the present invention.

FIG. 11 is a diagram for explaining the present invention, and is a block configuration diagram for explaining a fourth application example of the present invention.

FIG. 12 is a diagram for explaining the present invention, and is a block diagram for explaining a fifth application example of the present invention.

FIG. 13 is a diagram for explaining the present invention, and is a diagram for explaining a sixth application example of the present invention.

FIG. 14 is a diagram for explaining the present invention, and is a block configuration diagram for explaining a seventh application example of the present invention.

FIG. 15 is a diagram for explaining the present invention, and is a diagram for explaining a configuration example of a message and parameters in a sixth application example of the present invention.

[Explanation of symbols]

10, 10a, 10b, 10A, 10B ... message interpretation system 20, 20a, 20b, 20A, 20B, 20C ... digital watermark insertion core 100, 100a, 100b, 100A, 100B, 1
00C: Digital watermark insertion device 110: Data transfer means.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 7/30

Claims (11)

[Claims] 1. A data processing apparatus having data processing means for executing a predetermined processing algorithm to add secondary data to digital content given from outside the system and outputting the digital data, wherein the secondary data is An interpreting unit which receives control data defining various requirements when adding the data, interprets the data, converts it into a parameter suitable for a processing algorithm in the data processing unit, and gives the parameter to the data processing unit, and The processing algorithm of the processing means has a function of performing a required process on the digital content in accordance with a given parameter and adding a secondary data. apparatus. 2. A data processing apparatus according to claim 1, wherein said interpreting means converts the control data input from the outside into a data format defined by a processing algorithm of said data processing means and provides the data. A data processing device characterized by having: 3. A data processing means comprising a plurality of said data processing means, each of said data processing means having a different processing algorithm, and said interpreting means transmitting said externally input control data to said data processing means. 2. The data processing apparatus according to claim 1, wherein the data processing apparatus has a function of converting the data into a data format defined by a processing algorithm provided by the processing means. 4. A data processing apparatus having a data processing means for executing a predetermined processing algorithm and adding secondary data to digital content given from outside of the system and outputting the data, the data processing means being compatible with an input data format. Each having data processing means, receives control data defining various requirements when adding secondary data, interprets this, converts it into parameters suitable for the processing algorithm in the data processing means, and A data processing device comprising an interpreting means for giving the data processing means. 5. The control data input from the outside includes:
The information processing unit has a function of adding information for designating a conversion allowance with respect to the conversion operation performed by the data processing unit, and the interpreting unit has a function of selecting execution of data processing on the data processing unit side for the content according to the conversion allowance. The data processing apparatus according to claim 1, wherein 6. A data processing method for executing a predetermined processing algorithm to add secondary data to digital content given from outside the system and outputting the digital data. The control data defining the requirements is received, interpreted and converted into parameters suitable for the processing algorithm in the data processing, and given to the processing algorithm for the data processing. A data processing method for performing required processing on the digital content to add secondary data. 7. A plurality of data processing algorithms are provided, each of which has a different type of processing algorithm, and wherein control data input from the outside is converted into a data format defined by the processing algorithm. 7. The data processing method according to claim 6, wherein the data is given. 8. A data processing apparatus having a data processing means for executing a predetermined processing algorithm and adding secondary data to digital content given from outside of the system and outputting the digital data. An interpreting unit which receives control data defining various requirements when adding the data, interprets the data, converts it into a parameter suitable for a processing algorithm in the data processing unit, and gives the parameter to the data processing unit, and The processing algorithm possessed by the processing means has a function of executing required processing on the digital content in accordance with given parameters and adding secondary data, and provided from outside the system. From the digital content and the digital content to which the subsidiary data is added, the control data A data processing apparatus characterized by comprising monitoring means for monitoring whether the processing of adding secondary data based on data satisfies a request. 9. The data processing means according to claim 8, wherein the monitor means issues a command to stop the processing by said data processing means when the result of monitoring does not satisfy the request for adding the secondary data. Data processing device as described. 10. A monitor means for evaluating whether or not the additional data adding process satisfies a specified condition, and wherein evaluation conditions such as an evaluation procedure and an evaluation value can be arbitrarily specified from the outside. The data processing apparatus according to claim 8, wherein 11. A monitor means for evaluating whether or not the additional processing of the secondary data satisfies a designated condition, and issuing a command for a processing operation in said data processing means in accordance with the evaluation result. 9. The data processing apparatus according to claim 8, wherein an evaluation condition such as an evaluation procedure and an evaluation value and a command content can be arbitrarily specified from the outside.