JP2003076681A - Digital data processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a person reusing the information disclosed on a network to grasp required information related to the information easily without requiring the trouble of a person disclosing the information. SOLUTION: The person disclosing the information on the network performs editing work of the information to be disclosed using a computer. Consequently, editing processing P1 is performed in the computer, and edit data including document data and data other than document is generated. In the computer, document data is distinguished from chart data other than document (P3), and key information is extracted from the document data (P4). Electronic transparent processing (P5) is performed, and the key information is embedded in the chart data as transparent information of electronic transparent processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital data processing device for processing digital data containing document information and information other than a document.

[0002]

2. Description of the Related Art Conventionally, a computer user often uses a computer to edit a document, a drawing, or the like to create digital data such as a report including document information and information other than the document. . At this time, the user should create the document part such as the report, but copy and paste the information published on the network such as the Internet, etc. There are not a few cases in which the user imports it into his or her own computer by performing operations such as the above and uses it.

[0003]

By the way, when a user takes in information published on a network and creates digital data such as a report, it is wondered who created the information taken in from the network and when. The user may want to confirm that. Therefore, when publishing information such as charts on the network, it may be possible to request the publisher to add information that indicates who created the information and when. It is not preferable because the publisher's hand is troubled by the convenience of the user who reuses the information.

Therefore, the present invention has been made in view of the above problems, and does not bother a person who discloses the information, and a person who reuses the information can create the information by the creator or the creator of the information. It is an object of the present invention to provide a digital data processing device capable of easily grasping a creation date and the like.

[0005]

In order to achieve the above object, the invention according to claim 1 is a digital data processing apparatus for processing digital data including document information and information other than the document, wherein: Information discriminating means for discriminating between the document information and information other than the document in digital data, key information extracting means for extracting key information from the document information, and the key information as watermark information of a digital watermark other than the document. And a digital watermark processing means to be embedded in the information portion.

According to a second aspect of the present invention, in the digital data processing apparatus according to the first aspect, the key information is
It is characterized in that it is the title, author, or creation date and time of the document information.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the digital data processing device described in the paragraph 1, the document information is attached with tag information, and the key information extracting means extracts the document information as the key information based on the tag information. There is.

The invention according to a fourth aspect is the first to the third aspects.
In the digital data processing device according to any one of
The digital watermark processing means performs digital watermark processing as a visible watermark that allows the key information embedded as watermark information to be visually recognized.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a diagram showing a network system 1 according to an embodiment of the present invention. As shown in FIG. 1, the network system 1 is configured by connecting a plurality of computers 2, 3, 4 to a network 5 such as the Internet.

The computer 2 is the other computer 3, 4
Is a server computer that supplies information to the computer 3, and the computers 3 and 4 are configured to access the server computer 2 via the network 5 and obtain the information published in the server computer 2. Further, the computer 3 and 4 are also configured to be able to upload public information to the server computer 2, and the information uploaded by the computers 3 and 4 can be transferred to all the computers 2 by the server computer 2. It will be published in ~ 4.

For example, a case where the computer 3 functions as a digital data processing device that generates public data to be uploaded to the server computer 2 will be described.

FIG. 2 is a diagram showing the configuration of the computer 3 for uploading information, that is, the digital data processing device 3. The digital data processing device 3 is configured to include a main body section 3a which is a processing section for digital data, an operation input section 3b including a keyboard and a mouse, and a display section 3c including a CRT and a liquid crystal display. To be done.

The main body 3a has a CPU 30, a memory 35, and a storage device 36, like a so-called general computer.
And a recording medium 37 and a network interface (network I / F) 38. Memory 35
Is a storage unit for storing temporary data when the CPU 30 performs data processing, and the storage device 36 is the CPU 3
0 is a device configured by a magnetic disk device or the like in which programs and the like executed by 0 are stored. Further, the recording medium 37 is configured to be attachable to and detachable from the main body 3a, and the CPU 30 reads the program recorded in the recording medium 37 when the recording medium 37 is attached to the main body 3a. You can also do it. Network I / F
38 is an interface connecting the computer 3 and the network 5, and the CPU 30 is a network I / F 38.
It is configured so that the server computer 2 on the network 5 can be accessed via the server to upload digital data as public information.

In the computer 3 having the above-described structure, when the user generates digital data of the public information including the document information and the information other than the document, the contents and the layout including the document and the chart other than the document are first determined. Edited,
Edited data including document information and chart information other than the document is generated. Then, the server computer 2 converts the data into a data format that allows the information to be disclosed. In this embodiment, X is the data format for publication.
An example will be described in which ML (Extensible Markup Language) format data is adopted. Then, the digital data converted into the open data format is uploaded from the computer 3 to the server computer 2.

Therefore, the storage device 36 or the recording medium 37 in the computer 3 stores a program for performing the above-described processing, and the CPU 30 reads and executes the program to edit the function 31. The data conversion function 32 and the data communication function 33 are realized. Further, each processing means in the data conversion function 32 described later is also realized by the CPU 30 executing the above program.

FIG. 3 is a diagram showing a data flow in the digital data processing device 3.

The edit processing function 31 performs edit processing P1 for a document, a diagram, etc. based on the input information from the operation input unit 3b to generate edit data. At this time, the user
The contents such as documents and diagrams are displayed on the display unit 3c based on the input information from the operation input unit 3b so that the editing work can be performed while looking at the display screen of c. Then, after the edit data is generated by the edit process P1, the user performs a predetermined input operation for data conversion, so that the data conversion function 32 functions in the digital data processing device 3.

Then, the edit data generated in the edit process P1 is published in the data format by the data conversion function 32.
That is, the data is converted into public data expressed in XML format. At this time, the data conversion function 32 performs a data conversion process P2, an information determination process P3, a key information extraction process P4, and a digital watermark process P5.

The data conversion process P2 is performed by the editing process function 31.
The edit data in the data format defined by the type of application software that realizes the above is converted into digital data (this is referred to as XML data) expressed in the XML data format for publication. In XML format data, contents such as documents and drawings are separated by tag information, and the tag information (tag name, etc.)
The feature is that the user can freely set. Therefore, by taking into consideration the tag name and the like attached to the tag information, it is possible to clearly and efficiently distinguish the data of the document portion and the data of the portion other than the document in the XML data.

The information discriminating process P3 extracts the tag information of the XML data, analyzes the content of the tag information, and discriminates whether the data element delimited by the tag information is document data or chart data. To do. It should be noted that the chart data is data other than a document, and is a concept including not only data relating to charts such as graphs and tables but also general image data. The information determining process P3 is performed by analyzing the tag name and the like in the tag information, and it is possible to easily determine whether the data element is document data or chart data. The document data discriminated by the information discriminating process P3 is given to the key information extracting process P4, and the chart data is given to the digital watermark sled P5.

The key information extraction process P4 extracts, as key information, information about the title of the document, the author, the date and time of creation, etc., based on the contents of the tag information (name of the tag, etc.) determined as document data. Since the user can freely set the tag name in the XML data, the key information extraction process P4 uses the titles such as "title", "title", "creator", "creation date", and so on. author,
Search for preset tag names related to creation date and time,
The content of the document data with such tag information is extracted as key information. In other words, the key information is extracted from the document data based on the tag information attached to the document data.

If the key information regarding the title or the creation date and time cannot be extracted from the tag information, the file name of the document data, the file creation date and time, etc. are detected,
It may be used as key information regarding the title and the creation date and time.

Then, the key information extraction process P4 gives the electronic watermark process P5 key information about the title, author, creation date and time of the document, which is extracted based on the tag information determined as the document data.

The digital watermark process P5 is a process for embedding the key information extracted from the document data as digital watermark watermark information in the chart data which is data other than the document. Digital watermarks include "invisible watermarks" in which watermark information is embedded in an invisible state and "visible watermarks" in which watermark information is embedded in a visible state. In the digital watermark processing P5,
Digital watermark processing of either an invisible watermark or a visible watermark may be performed.

As a digital watermark process for embedding an invisible watermark, for example, a method is known in which the frequency component of an image relating to a chart or the like is extracted and key information is embedded in a high frequency component which hardly affects the visual sense. There is.

When the key information is embedded in the chart data as an invisible watermark, the digital watermark processing is performed so that the watermark information can be extracted by computer processing using a public key that is open to the public. .
The public key stores, for example, information as to what frequency component the key information is embedded. Therefore, for example, when a third party imports the published chart data into his or her computer, the public key can be used to retrieve the watermark information, and it is possible to recognize who created the chart data and when. It is possible to Furthermore, when key information is embedded as invisible watermark in the chart data, the key information is not visible unless special visualization processing is performed using the public key on the computer. Since there is no obstacle that hinders the visual inspection, it is possible to visually confirm the chart and the like.

As a digital watermark process for embedding a visible watermark, for example, a method is known in which watermark information generated based on key information is multiplexed with each pixel forming an image relating to a chart or the like. .

When the key information is embedded in the chart data as a visible watermark, it is not necessary to perform a special computer process for extracting the watermark information, and the watermark information can be visually recognized by displaying or printing the chart data. Therefore, for example, when a third party imports the published chart data into his or her computer, it is possible to easily recognize who created the chart data and when. Therefore, there is an advantage that the key information can be easily confirmed as compared with the case where the key information is embedded as the invisible watermark.

When the embedding process of the key information extracted from the document data as the electronic watermark is completed, the figure data and the document data in which the key information is embedded are reconstructed to generate the public data. To do. The public data is XML format data, but is different from the XML data output from the data conversion process P2 in that the public data has key information embedded in the image portion of the chart data as a digital watermark. .

The public data generated by the digital watermark process P5 is given to the data communication process P6.
When the data communication function 33 is realized in the CPU 30, the data communication process P6 is performed. Data communication process P
6 performs data communication with the server computer 2 connected to the network 5 via the network I / F 38.
Then, the data communication process P6 uploads the public data by transmitting the public data obtained from the data conversion function 32 to the server computer 2 via the network I / F 38.

As a result, the server computer 2 shown in FIG. 1 publishes the publication data input from the computer 3 to the other computers 3 and 4 connected to the network 5. When the server computer 2 is accessed via the network 5, the public information uploaded by the user of the computer 3 can be browsed, and the public information can be freely downloaded in the computer 4 by downloading the public data from the server computer 2. Can be used for.

Here, when the user of the computer 4 incorporates the portion of the published information relating to the figures and tables into the edited data of the report created by himself / herself, he / she performs an operation such as copy and paste. Include in edit data.

In this case, since the digital watermark processing applied to the chart data is taken into other editing data as it is, the user of the computer 4 analyzes the watermark information embedded in the chart data to Can easily recognize who created it and when.

In particular, when performing digital watermarking in which key information is embedded in the chart data as a visible watermark, the user of the computer 4 simply displays or prints the edited content and visually confirms who created the chart. It is possible to easily recognize whether or not it has been done.

Therefore, for example, even when the user of the computer 4 takes in the information published on the network 5 and creates digital data such as a report, who created the information about the charts and the like taken in from the network at any time. That is, it can be easily recognized from the watermark information (key information) embedded in a portion such as a chart as a digital watermark.

For example, when the chart data fetched through the network 5 is an image or the like, and the user of the computer 4 wants to confirm the attribution of the copyright, etc., he / she should confirm the key information about the author. Good. Also,
In the case where the chart data fetched via the network 5 is a graph or the like showing the component data of a certain component, and the user of the computer 4 wants to confirm the distributor of the component, Check the key information. Further, in the case of technical documents and the like, it is very important when the graph or the like is data, but in that case, the key information regarding the date and time of creation may be checked.

However, all the key information relating to the title, author, creation date and time of the document is embedded in the chart data as watermark information, so when the user of the computer 4 confirms the watermark information, all the key information is included. It is possible to confirm at the same time.

In the computer 3, that is, the digital data processing device 3, the information (edited data) edited by the user (publisher) is XML for publishing the information.
When an operation for converting to data is performed, the data conversion function 32 functions, the data conversion function 32 performs data conversion from edit data to XML data, extracts key information, and extracts the key information. Since the digital watermark process P5 for embedding as digital watermark in the chart data is executed as a series of processes, it is not necessary for the user (publisher) to intentionally execute the digital watermark process for embedding key information in the chart data. Absent.

Therefore, the network system 1 and the digital data processing device 3 in this embodiment are
A configuration that does not bother a person who discloses information on the network 5 and enables a person who reuses the information to easily grasp the creator and the creation date of the information. Has been done.

In the above description, the processing mode of embedding the key information in the chart data other than the document in the digital data including the document information generated by the editing and the information other than the document has been described. This is because the elements most likely to be used in the information disclosed above are elements other than documents, such as figures and tables.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above description.

For example, in the above description, the case where the computer 3 in the network system 1 functions as a digital data processing device of the present invention has been described, but each computer 2, 3, 4 functions as a digital data processing device. It doesn't matter.

Further, in the above description, the data in the XML format has been exemplified as the data format for publication, but the data format is not limited thereto. However, if the XML format data is used, the document data and the chart data other than the document can be distinguished relatively easily based on the tag information, so that the process of extracting the key information can be efficiently performed. Is.

Further, in the above description, an example in which each of the functions and processes described above is realized by the CPU 30 executing a predetermined program has been shown, but the present invention is not limited to this, and the above processes are dedicated. It may be implemented as hardware.

[0046]

As described above, according to the invention described in claim 1, the key information is extracted from the document information by discriminating the document information from the information other than the document in the digital data, and extracting the key information. Since it is configured to be embedded in information other than a document as watermark information of a digital watermark, it does not bother a person who discloses the information as digital data, and reuses information other than the document. It becomes possible for a person to easily grasp necessary information regarding the information.

According to the second aspect of the invention, since the key information is the title of the document information, the author, or the creation date and time, when the information other than the document is reused, the user can read the document. It is possible to know the title of information, the author, or the date and time of creation.

According to the third aspect of the present invention, the tag information is attached to the document information, and the document information is extracted as the key information based on the tag information. Therefore, the key information can be efficiently extracted. It is possible to

According to the invention described in claim 4, since the digital watermark process is performed as a visible watermark in which the key information embedded as the watermark information can be visually recognized, a person who reuses information other than the document can It is possible to easily grasp the necessary information regarding the information without performing any special processing.

[Brief description of drawings]

FIG. 1 is a diagram showing a network system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a digital data processing device.

FIG. 3 is a diagram showing a data flow in a digital data processing device.

[Explanation of symbols] 1 network system 2 server computer 3 computer (digital data processor) 4 computers 5 network 30 CPU 31 Edit processing function 32 data conversion function 33 Data communication function P1 editing process P2 data conversion process P3 information discrimination processing (information discrimination means) P4 key information extraction processing (key information extraction means) P5 digital watermark processing (digital watermark processing means) P6 data communication processing

Continued front page    (72) Inventor Koji Fujiwara             2-3-3 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Osaka International Building Minolta Co., Ltd. (72) Inventor Masaki Asano             2-3-3 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Osaka International Building Minolta Co., Ltd. F-term (reference) 5B009 TB13                 5B057 AA20 BA01 CA19 CE08 CE09                       CG07                 5B082 EA07 EA10                 5C076 AA14 BA06                 5J104 AA14 PA07

Claims (4)

[Claims] 1. A digital data processing device for processing digital data including document information and information other than a document, the information discriminating means discriminating between the document information and the information other than the document in the digital data. A digital data processing device comprising: key information extracting means for extracting key information from the document information; and digital watermark processing means for embedding the key information as watermark information of a digital watermark in a portion of information other than the document. 2. The digital data processing device according to claim 1, wherein the key information is a title, an author, or a creation date and time of the document information. 3. The digital data processing device according to claim 1, wherein tag information is attached to the document information, and the key information extracting means extracts the document information based on the tag information. A digital data processing device characterized by extracting as the key information. 4. The digital data processing device according to claim 1, wherein the digital watermark processing means is a digital watermark as a visible watermark capable of visually recognizing the key information embedded as watermark information. A digital data processing device characterized by performing processing.