JP2011159321A - Data conversion method, device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent information collection by a machine for a part not desired by an information provider or the like while correctly transmitting a content to persons. <P>SOLUTION: The data conversion method includes steps of: identifying a character string the output as text data of which should be avoided from content data to be processed; converting the identified character string into substitution data other than test data while maintaining the content of the character string; and creating disclosure content data for maintaining a disclosure content of the content data by use of the data other than the character string in the content data and the substitution data. A mail address, telephone number, address, name or the like, the output as text data of which should be avoided, is converted to image data other than text data; thereby the character sting can be made secrete to the machine without changing the disclosure content to persons. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for concealing a part of published content data from a machine.

  With the spread of the Internet, various information can be easily accessed through a web page. The search engine plays a huge role in accessing this information. Search engines automatically collect (crawling) information that is distributed and stored in the Internet, create an index, and use it for information searchers. Since the information provider also discloses information on the Web page for the purpose of information transmission and distribution, it is basically preferable that an index is created by crawling with a search engine. Commercially, certain keywords may compete for being ranked higher in search engines.

  However, the Web page includes content originally provided for the purpose of disclosure and information to be disclosed incidentally such as information on the origin of the content or contact information. For information originally provided for the purpose of disclosure, there is no particular problem with crawling in a search engine, but there may be a problem if the information source or contact information is crawled. For example, an e-mail address may be disclosed as contact information, but the e-mail address may be crawled and become a target of spam mail. In addition, if the name or address is crawled, the content source information can be used for various crimes. As for other information, there are some cases where it is not preferable that the information is crawled by a search engine or the like and secondarily used.

  For this reason, as a countermeasure against an email address, if the email address is hoge@hoge.com, there are cases where a method of converting the character string to hoge at hoge dot com or inserting a blank space may be employed. However, this method can be used for e-mail addresses and telephone numbers, but information such as names and addresses cannot be converted and may lead to incorrect information.

  For example, Japanese Patent Laid-Open No. 6-348808 discloses a technique for easily outputting all index information including index information such as secret documents and important documents on an index sheet and maintaining confidentiality. Is disclosed. Specifically, the index information and the image data of the document are read from the storage medium, and it is checked whether there is a specific character string or a special file attribute in the image information. A special pattern (such as a “secret” or “important” character pattern) is synthesized with the image, or only the special pattern is replaced with an index image and deployed in an output buffer, and the data is sent to the printer unit to form paper Then, an image is formed and an index sheet is output. This technique outputs a special pattern for data that should be kept secret, but it does not turn data that should be kept secret into data that can be understood by humans but cannot be understood by machines.

JP-A-6-348808

  As described above, in the prior art, it is impossible to correctly convey the contents of content to human beings while preventing crawling and secondary use for a portion that is not desired by the information provider.

  Therefore, an object of the present invention is to provide a technique for correctly transmitting the contents of a content to a human being while preventing information collection by a machine about a portion not desired by an information provider.

  In the data conversion method according to the present invention, content data to be processed is read from a content data storage unit that stores content data to be disclosed including text data, and a character string that should be avoided from being output as text data from the content data. Using a specifying step for specifying, a conversion step for converting the specified character string into replacement data other than text data while maintaining the content of the character string, and data other than the character string in the content data and replacement data A generation step of generating public content data for maintaining the public content of the content data and storing it in a storage device.

  In this way, a character string (email address, telephone number, address, name, etc. in the above example) that should be prevented from being output as text data is replaced with replacement data other than text data (for example, image data representing the above character string or By converting the data into voice data, the character string can be kept secret from the machine without changing the contents disclosed to humans.

  Note that the specific step described above may include a step of extracting a predetermined type of personal information. As described above, it is possible to prevent unnecessary distribution of personal information. In addition, not only personal information but also price and other information may be extracted.

  Similarly, the specific step described above may include a step of extracting at least a part of a predetermined type of character string. For example, the same effect may be obtained even if not all characters of the name are converted into replacement data, but only a part of the characters is used as replacement data.

  Further, when the replacement data is image data representing a specified character string, the image data may include an image in which a font corresponding to the character included in the character string is broken. For example, even when a search engine or the like uses OCR (Optical Character Recognition) technology, it is difficult to read such an image with a broken font.

  Furthermore, the public content data described above may include reference data for the replacement data. For example, in the case of an HTML (Hyper Text Markup Language) file, a link to an image file or an audio file is included. The image file may be displayed on the same Web page or may be displayed in a separate window.

  Furthermore, the public content data described above may be data for displaying data other than character strings in the content data in combination with replacement data. In an HTML file, for example, an IMG tag may be displayed on the same Web page, or partial data of PDF (Portable Document Format) may be replaced with an image. Even in such a case, the machine cannot easily grasp the character string of the image data portion.

  Further, when the content data request is received, a step of determining whether the transmission source of the content data request is registered in the disclosure rejection list or the disclosure permission list, and the transmission source of the content data request is A step of transmitting the public content data stored in the storage device to the transmission source of the content data request when it is determined that it is registered in the public rejection list or not registered in the public permission list; When it is determined that the transmission source of the data request is not registered in the disclosure rejection list or registered in the disclosure permission list, the content data stored in the content data storage unit is converted to the transmission source of the content data request. May be further included. In this way, public content data can be output for an access source that the information provider does not wish to disclose a specific character string.

  A program for causing a computer to execute the method according to the present invention can be created, and the program is stored in a storage medium or storage device such as a flexible disk, a CD-ROM, a magneto-optical disk, a semiconductor memory, or a hard disk. Is done. In some cases, digital signals are distributed over a network. Note that data being processed is temporarily stored in a storage device such as a computer memory.

  According to the present invention, it is possible to correctly convey the contents of content to human beings while preventing information gathering by a machine about partial texts that are not desired by the information provider.

It is a figure for demonstrating the system outline | summary which concerns on the 1st Embodiment of this invention. It is a figure which shows the processing flow in the information provider terminal which concerns on the 1st Embodiment of this invention. (A) is a figure which shows the example of a normal content display, (b) thru | or (d) is a figure which shows the example of a display of replacement content. It is a figure which shows the other example of a display of replacement content. (A) shows an example of an HTML file of normal content, and (b) to (d) show an example of an HTML file in the case of replacement content. It is a figure which shows the processing flow at the time of the delivery process which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the system outline | summary which concerns on the 2nd Embodiment of this invention. It is a figure which shows the processing flow of the server which concerns on the 2nd Embodiment of this invention. It is a functional block diagram of a computer.

[Embodiment 1]
FIG. 1 shows a schematic diagram of a system according to the first embodiment of the present invention. Connected to the network 1 are a server 5, a search engine 7, for example, one or a plurality of information user terminals 9 that are personal computers and execute a Web browser 91, and an information provider terminal 3.

  The information provider terminal 3 includes an input content storage unit 31 for storing content created by a content creation program such as an HTML (Hyper Text Markup Language) file creation program by the information provider, and avoiding output as text data in the content It has a replacement content storage unit 32 that stores replacement content that is data for replacing and presenting a character string to be replaced with another data, and a content conversion program 33 that performs main processing in the present embodiment. The content conversion program 33 is specified by the replacement target character string extraction unit 333 and the replacement target character string extraction unit 333 that perform processing for extracting the replacement target character string from the content stored in the input content storage unit 31. A replacement target character string storage unit 336 that stores the replacement target character string, a replacement data generation unit 337 that generates replacement data from the replacement character string stored in the replacement target character string storage unit 336, and a replacement data generation unit 337. Access by a machine such as the search engine 7 using the replacement data storage unit 335 that stores the generated replacement data and the content stored in the input content storage unit 31 and the replacement data stored in the replacement data storage unit 335 A replacement container that generates replacement content provided to conceal the replacement target character string. The test generation unit 332 and a test display unit 331 that performs a test display process of the replacement content stored in the replacement content storage unit 32 and the content stored in the input content storage unit 31 according to an instruction from the information provider, for example. And an upload unit 334 for uploading the replacement content stored in the replacement content storage unit 32 and the content stored in the input content storage unit 31 to the server 5 according to an instruction from the information provider, for example.

  Further, the server 5 performs an authentication process and the like, and when the authentication process or the like succeeds, the registration interface unit 51 that receives the content uploaded from the information provider terminal 3, and the information provider terminal by the registration interface unit 51 3, an input content storage unit 52 that stores data of content received from 3, a replacement content storage unit 53 that stores data of replacement content received from the information provider terminal 3 by the registration interface unit 51, and access via the network 1 A distribution rule storage unit 55 for storing data serving as a rule for determining whether normal content data should be distributed or a corresponding replacement content should be transmitted, and according to access via the network 1 The distribution route stored in the distribution rule storage unit 55 And a distribution processing unit 54 for delivering the normal content data or replacement content data to the requester according to.

  The distribution rule storage unit 55 stores a list of IP addresses of devices to which replacement content is to be distributed when requested. Conversely, a list of IP addresses of devices to which content is to be distributed or a request source attribute (for example, browser type) of the device to which content is to be distributed may be defined.

  Next, processing contents of the system shown in FIG. 1 will be described with reference to FIGS. First, the replacement target character string extraction unit 333 in the content conversion program 33 of the information provider terminal 3 reads content data from the input content storage unit 31 (step S1). Then, for example, proper nouns and other candidate replacement character strings are extracted from the content (step S3). The replacement target character string to be extracted is basically information to be kept secret from the machine, and is personal information such as a name, address, telephone number, and mail address. Other types of data may be extracted. Although not shown, a dictionary for character strings to be extracted such as proper nouns may be referred to. Also, proper noun extraction technology (for example, Masayuki Asahara and Yuji Matsumoto, "Japanese named entity extraction with redundant morphological analysis", In Proc. Human Language Technology and North American Chapter of Association for Computational Linguistics (HLT-NAACL), pp.8- 15, May 2003). The telephone number may be extracted by implementing a rule using a character string processing function using a regular expression in a language such as Perl or Ruby. For example, a rule “0 \ d {2}-\ d {3}-\ d {4}” is created. In this case, \ d means that it matches the number, and the number in {} indicates the number of repetitions. Therefore, according to such a rule, a number such as 012-345-6789 can be extracted.

  Then, the replacement target character string extraction unit 333 displays the replacement target character string candidates on the display device, accepts selection of candidates or specific character string designation by the information provider, and stores them in the replacement target character string storage unit 336. Store (step S5). The information provider may select an appropriate replacement target character string from the displayed candidates, or may specify the replacement target character string specifically instead of or in addition to the displayed candidate. For example, in the case of the content as shown in FIG. 3A, “Taro Yamada” and “hoge@hoge.com” are specified as the replacement target character strings and stored in the replacement target character string storage unit 336. And

  Next, the replacement data generation unit 337, for example, (a) images the entire replacement target character string, (b) images a part of the replacement character string (every other character, every second character, only the specified portion, etc.) (C) The replacement data generation method such as voice conversion is presented to the information provider, and designation of the replacement data generation method is accepted from the information provider (step S7). For example, in the example of FIG. 3A, when the whole image of “Taro Yamada” and “hoge@hoge.com” is imaged, for example, the display as shown in FIG. 3B is performed. FIG. 3B is a simple image. In such a case, in the case of the search engine 7 having the OCR function, the character string in the image may be specified using the OCR function. . To counter such a case, as shown in FIG. 3C, when making an image, the font is italicized, the font size is made different in the character string, the font is bolded, The font color may be made different in the character string, the font type may be changed, or broken characters may be used. Without such simple imaging, even a search engine 7 having an OCR function cannot accurately read characters, and has the purpose of concealing it from the machine described above. It will be possible to be more certain.

  Furthermore, when a part of the replacement character string is imaged, for example, an image as shown in FIG. 3D is displayed. That is, the characters “mountain”, “ro”, and “hoge” are imaged. In this way, these characters cannot be easily specified, and the character strings “Taro Yamada” and “hoge@hoge.com” cannot be specified by a machine. When only some of these characters are imaged, the information provider may specify the characters to be imaged, or the information provider may use a method such as every other character. May be specified. Further, every other character may be set, and processing may be automatically performed according to such rules.

  In the case of voice conversion, voice data is generated using a voice synthesis function. In the case of audio data, since it cannot be displayed, for example, display as shown in FIG. 4 is performed, and link 1 for reproducing the voice of “Taro Yamada” and “hoge@hoge.com” Of the link 2 for reproducing the voice of, the information user is caused to click on the part to be reproduced. According to the function of a normal web browser, a necessary program can be activated to reproduce audio data.

  Next, the replacement data generation unit 337 generates replacement data for the specified replacement target character string according to the replacement data generation method specified by the information provider, and stores the replacement data in the replacement data storage unit 335 (step S9). As described above, image data or audio data is generated. Note that image data or audio data is stored in the replacement data storage unit 335 so that the original character string can be specified. For example, the folder name is the original character string, and the file name is the date and time.

  Then, the replacement content generation unit 332 uses the content stored in the input content storage unit 31 and the replacement data stored in the replacement data storage unit 335 to convert the input content so as to refer to the replacement data. A replacement content is generated and stored in the replacement content storage unit 32 (step S11). For example, in the case where the content stored in the input content storage unit 31 is an HTML file as shown in FIG. 5A, in order to perform the display as shown in FIGS. 3B and 3C, FIG. Convert to an HTML file as shown in (b). That is, when displaying image data, the character string “Taro Yamada” is converted into an IMG tag for reading an image file for “Taro Yamada”, and the character string “hoge@hoge.com” is converted to “hoge The image file for “@ hoge.com” is converted into an IMG tag for reading. Thus, the portions other than the replacement target character string are the same, and the replacement target character string portion refers to the replacement data by the IMG tag. In this example, the image data is arranged in the same folder as the HTML file. In this way, the character string is not specified from the file name.

  In addition, in order to display as shown in FIG. 3D, the file is converted into an HTML file as shown in FIG. That is, when displaying image data for a part of the character string, the character “mountain” is converted to an IMG tag for reading an image file for “mountain”, and the character “ro” is used for “ro”. Is converted into an IMG tag for reading the image file, and the character string “hoge” is converted into an IMG tag for the “hoge” character string.

  Furthermore, in order to perform the display as shown in FIG. 4, it is converted into an HTML file as shown in FIG. That is, the character string “Taro Yamada” is replaced with the A tag for referring to the sound file for “Taro Yamada” and the character string “Link 1”, and the character string “hoge” is used for “hoge”. Replace with the A tag for referring to the audio file and the character string “link 2”. In this case, since the audio file cannot be presented in the HTML file, a hyperlink is included.

  The replacement content generation unit 332 stores the generated HTML file and image file or audio file in the replacement content storage unit 32.

  Next, the test display unit 331 performs a display test in which, for example, the content stored in the input content storage unit 31 and the replacement content stored in the replacement content storage unit 32 are displayed side by side (step S13). For example, the display as shown in FIG. 3 (a) and the display as shown in FIG. 3 (b) are displayed side by side, and the information provider is compared to confirm whether the intended display has been made.

  Here, the content conversion program 33 determines whether or not an upload instruction has been made by the information provider (step S15). If the upload instruction is made, that is, if it is determined that the intended display is realized by the replacement content, The upload unit 334 uploads the content stored in the input content storage unit 31 and the replacement content stored in the replacement content storage unit 32 to the server 5 (step S21). Then, the process on the information provider terminal 3 side ends. The registration interface unit 51 of the server 5 performs an authentication process on the information provider terminal 3 and stores the content received from the information provider terminal 3 in the input content storage unit 52 when the authentication is successful. Then, the replacement content received from the information provider terminal 3 is stored in the replacement content storage unit 53.

  On the other hand, when the intended display is not realized by the replacement content, (a) the replacement data generation method is reset, (b) the replacement target character string is reset, and (c) the process is stopped. Let the information provider specify. When the replacement data generation method is reset (step S17: Yes route), the process returns to step S7. On the other hand, the replacement data generation method is not reset (step S17: No route). When the replacement target character string is reset (step S19: Yes route), the process returns to step S5. On the other hand, in the case of an instruction to stop the process (step S19: No route), the process in the information provider terminal 3 is terminated.

  By performing the processing as described above, a character string to be concealed from the machine such as personal information can be imaged or voiced in a form intended by the information provider.

  Next, processing when the server 5 receives an access requesting content will be described with reference to FIG. For example, the Web browser 91 of the information user terminal 9 transmits a request for specific content data (content data of a specific URL (Uniform Resource Locator)) to the server 5 in accordance with an instruction from the information user (step S31). . Upon receiving a request for specific content data (step S33), the distribution processing unit 54 of the server 5 refers to the distribution rule storage unit 55 to check whether the request source is set as a disclosure rejection destination (step S35). . For example, in the distribution rule storage unit 55, a disclosure rejection destination IP address or the like is defined for each URL or each information provider. In some cases, for example, terminal attributes (such as browser type) are specified instead of the IP address. For example, the IP address of the search engine 7 is registered as the IP address of the disclosure rejection destination. Note that the distribution rule storage unit 55 may store an IP address of a public permission destination.

  If the request source is the disclosure rejection destination, the replacement content data corresponding to the requested specific content data and stored in the replacement content storage unit 53 is read, and the request source information that is the disclosure rejection destination is used. To the user terminal 9 (step S37).

  The Web browser 91 of the information user terminal 9 that is the disclosure refusal destination receives the replacement content from the server 5 and displays it on the display device (step S39). In such a case, the display as shown in FIGS. 3B to 3D or FIG. 4 is made. Even if this is seen by humans, the contents can be understood. However, the machine cannot recognize the replacement target character string.

  On the other hand, if the request source is not the disclosure refusal destination, the requested specific content data, that is, normal content data is read from the input content storage unit 52 and transmitted to the requesting information user terminal 9 (step S41). ). The Web browser 91 of the information user terminal 9 receives normal content data and displays it on the display device (step S43). For example, the display as shown in FIG. In this case, secondary use of the replacement target character string is also possible.

  In the case of FIG. 4, the information user clicks the character string “link 1” and / or the character string “link 2” displayed in the window of the Web browser 91 to start the audio reproduction program. It is necessary to download the audio file from the server 5 and reproduce and output it.

  According to such an embodiment, an appropriate replacement content is generated according to the intention of the information provider terminal, and further, it is determined whether the server 5 side is a disclosure refusal destination. It is also possible to distribute replacement content and normal content to appropriate information users.

  It should be noted that replacement content is generated in accordance with a plurality of replacement data generation methods, a plurality of types of replacement content are accumulated also in the server 5, and different types of replacement content are distributed according to the attribute of the request source. good.

[Embodiment 2]
In the example described above, the information provider side generates the replacement content in advance and uploads it to the server 5 side. However, the information provider side only generates the normal content, and the server side The replacement content may be generated in advance or dynamically.

  Hereinafter, an embodiment in which replacement content is generated on the server side will be described with reference to FIGS. In a network 1 such as the Internet, one or a plurality of information user terminals 9 that execute a Web browser 91, a search engine 7, a server 501 that performs the main processing in the present embodiment, an HTML file creation program, and the like Is connected to an information provider terminal 301 that executes

  The server 501 in the present embodiment performs an authentication process on the information provider terminal 301, and if the authentication process is successful, a registration interface unit that receives normal content data uploaded from the information provider terminal 301 551, an input content storage unit 552 that stores normal content data received by the registration interface unit 551 from the information provider terminal 301, and an extraction rule storage unit 554 that stores an extraction rule for extracting a replacement target character string. And a replacement target character string extraction unit 553 that extracts a replacement target character string from content stored in the input content storage unit 552 according to data stored in the extraction rule storage unit 554, and a replacement target character string extraction unit 553. Replacement target character string storage 5 for storing the replacement target character string 5, a replacement data generation unit 556 that generates replacement data of a predetermined method from the replacement target character string stored in the replacement target character string storage unit 555, and a replacement that stores the replacement data generated by the replacement data generation unit 556 A replacement target character string for access by a machine such as the search engine 7 using the data storage unit 557, replacement data stored in the replacement data storage unit 557, and normal content data stored in the input content storage unit 552 A replacement content generation unit 558 that generates replacement content provided to conceal the content, a replacement content storage unit 559 that stores replacement content generated by the replacement content generation unit 558, and an IP address that is a refusal destination or a public permission destination A distribution rule storage unit 561 for storing addresses and the like and an input content storage unit 552 Distribution that distributes to the request source based on the data of the refusal destination or permission destination stored in the distribution rule storage unit 561 among the stored normal content and the replacement content stored in the replacement content storage unit 559 And a processing unit 560.

  The information provider operates the information provider terminal 301 to upload the created content data to the server 501. The registration interface unit 551 of the server 501 performs an authentication process on the information provider terminal 301. If the authentication is successful, the registered content data is stored in the input content storage unit 552. The following processing will be described with reference to FIG. Note that the process of FIG. 8 may be performed in advance, and in this case, the process flow of FIG. 6 in the first embodiment remains unchanged. On the other hand, the process of FIG. 8 may also be performed when a request for specific content data is received. In this case, for example, the process is dynamically performed between step S35 and step S37 of FIG. In some cases. In this case, the replacement data generation method may be changed depending on the attribute of the request source.

  First, the replacement target character string extraction unit 553 reads content data from the input content storage unit 552 (step S51). Then, according to the extraction rules for each information provider or each content stored in advance in the extraction rule storage unit 554, for example, proper nouns and other replacement target character strings are extracted from the content and stored in the replacement target character string storage unit 555. (Step S53). Basically, it is the same as step S3, but here it is not presented as a candidate to the information provider.

  Next, the replacement data generation unit 556 images, for example, (a) the entire replacement target character string, (b) part of the replacement character string (every other character, every second character, only the designated portion, etc.) The replacement data is generated for the replacement target character string stored in the replacement target character string storage unit 555 in accordance with a predetermined method among the replacement data generation methods such as (c) voice conversion, and the replacement data storage unit 557 stores the replacement data. Store (step S55). Image data or audio data is generated for the replacement target character string. Basically, it is the same as step S9, but a preset data generation method is used. The replacement data generation method may be set in advance by the information provider, or may be set by the administrator of the server 501.

  Then, the replacement content generation unit 558 converts the input content to refer to the replacement data by using the content stored in the input content storage unit 552 and the replacement data stored in the replacement data storage unit 557. Then, the replacement content is generated and stored in the replacement content storage unit 559 (step S57). This is basically the same process as step S11.

  If the processing as described above is performed, a character string to be concealed from the machine, such as personal information, can be imaged or voiced on the server side. That is, secondary use of personal information unintended by the information provider can be prevented. Even if it is a public refusal destination, if it is a human being, it can recognize the content of the character string which should be concealed visually or auditorily.

  In particular, it is possible to prevent a mail address automatically extracted by a search engine or the like from being used as a spam mail destination. In addition, it is possible to maintain the duality of information that may be conveyed as incorrect information if other expressions such as name and address are used, such as concealing it from machines and making it public to humans. become.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this. That is, since only personal information is not information that should be kept secret from machines such as search engines, other types of character strings may be specified as secret objects.

  In the example described above, the replacement content is created in the information provider terminal or server. However, the replacement content creation may be performed by another computer (proxy, terminal, etc.) on the network. Even when the replacement data is an audio file, the audio data may be embedded in the same file.

  The functional blocks shown in FIGS. 1 and 7 are examples, and do not necessarily correspond to actual program modules.

  The server, the information provider terminal, the information user terminal, and the proxy are computer devices as shown in FIG. 9, and display a memory 2501 (storage device), a CPU 2503 (processing device), and a hard disk drive (HDD) 2505. A display control unit 2507 connected to the device 2509, a drive device 2513 for the removable disk 2511, an input device 2515, and a communication control unit 2517 for connecting to a network are connected by a bus 2519. An operating system (OS: Operating System) and an application program for performing processing in the present embodiment are stored in the HDD 2505, and are read from the HDD 2505 to the memory 2501 when executed by the CPU 2503. If necessary, the CPU 2503 controls the display control unit 2507, the communication control unit 2517, and the drive device 2513 to perform necessary operations. Further, data in the middle of processing is stored in the memory 2501 and stored in the HDD 2505 if necessary. In the embodiment of the present invention, an application program for performing the processing described above is stored in the removable disk 2511 and distributed, and is installed in the HDD 2505 from the drive device 2513. In some cases, the HDD 2505 may be installed via a network such as the Internet and the communication control unit 2517. Such a computer apparatus realizes various functions as described above by organically cooperating hardware such as the CPU 2503 and the memory 2501 described above, the OS, and necessary application programs.

(Appendix 1)
A specific step of reading content data to be processed from a content data storage unit that stores content data to be disclosed including text data, and specifying a character string that should be prevented from being output as text data from the content data;
A conversion step of maintaining the content of the character string and converting the identified character string into replacement data other than the text data;
Using the data other than the character string in the content data and the replacement data to generate public content data for maintaining the public content of the content data, and storing it in a storage device;
A data conversion method executed by a computer.

(Appendix 2)
The specific step includes
The data conversion method according to appendix 1, including a step of extracting a predetermined type of personal information.

(Appendix 3)
The specific step includes
The data conversion method according to appendix 1, including a step of extracting at least a part of a predetermined type of character string.

(Appendix 4)
The data conversion method according to claim 1, wherein the replacement data other than the text data is image data or audio data representing the character string.

(Appendix 5)
The data conversion method according to claim 1, wherein the image data includes an image in which a font corresponding to a character included in the character string is broken.

(Appendix 6)
The data conversion method according to claim 1, wherein the public content data includes reference data for the replacement data.

(Appendix 7)
The data conversion method according to claim 1, wherein the public content data includes data for displaying the replacement data in a separate window.

(Appendix 8)
The data conversion method according to claim 1, wherein the public content data is data for displaying data other than the character string in the content data in combination with the replacement data.

(Appendix 9)
When receiving a content data request, determining whether the transmission source of the content data request is registered in the disclosure denial list or registered in the disclosure permission list;
When it is determined that the transmission source of the content data request is registered in the disclosure rejection list or not registered in the disclosure permission list, the published content data stored in the storage device is Sending to the sender of the content data request;
If it is determined that the transmission source of the content data request is not registered in the disclosure rejection list or registered in the disclosure permission list, the content data stored in the content data storage unit is Transmitting to the source of the content data request;
The data conversion method according to appendix 1, further comprising:

(Appendix 10)
A program for causing a computer to execute the data conversion method according to any one of appendices 1 to 9.

(Appendix 11)
A means for reading content data to be processed from a content data storage unit that stores content data to be disclosed including text data, and specifying a character string that should be prevented from being output as text data from the content data;
Conversion means for maintaining the content of the character string and converting the specified character string into replacement data other than the text data;
Generating means for generating public content data for maintaining the public content of the content data using data other than the character string in the content data and the replacement data, and storing the public content data in a storage device;
A data conversion device.

DESCRIPTION OF SYMBOLS 1 Network 3,301 Information provider terminal 5,501 Server 7 Search engine 9 Information user terminal 31 Input content storage part 32 Replacement content storage part 33 Content conversion program 51,551 Registration interface part 52,552 Input content storage part 53, 559 Replacement content storage unit 54, 560 Distribution processing unit 55, 561 Distribution rule storage unit 91 Web browser 331 Test display unit 332, 558 Replacement content generation unit 333, 553 Replacement target character string extraction unit 334 Upload unit 335, 557 Replacement data storage Sections 336 and 555 Replacement target character string storage sections 337 and 556 Replacement data generation section 554 Extraction rule storage section

Claims (9)

A specific step of reading content data to be processed from a content data storage unit that stores content data to be disclosed including text data, and specifying a character string that should be prevented from being output as text data from the content data;
A conversion step of maintaining the content of the character string and converting the identified character string into replacement data other than the text data;
Using the data other than the character string in the content data and the replacement data to generate public content data for maintaining the public content of the content data, and storing it in a storage device;
When receiving a content data request, determining whether the transmission source of the content data request is registered in the disclosure denial list or registered in the disclosure permission list;
When it is determined that the transmission source of the content data request is registered in the disclosure rejection list or not registered in the disclosure permission list, the published content data stored in the storage device is Sending to the sender of the content data request;
If it is determined that the transmission source of the content data request is not registered in the disclosure rejection list or registered in the disclosure permission list, the content data stored in the content data storage unit is Transmitting to the source of the content data request;
A data conversion method executed by a computer. The specific step includes
The data conversion method according to claim 1, further comprising: extracting a predetermined type of personal information. The specific step includes
The data conversion method according to claim 1, further comprising: extracting at least a part of a predetermined type of character string. The data conversion method according to claim 1, wherein the replacement data other than the text data is image data or audio data representing the character string. The data conversion method according to claim 4, wherein the image data includes an image in which a font corresponding to a character included in the character string is broken. The data conversion method according to claim 1, wherein the public content data includes reference data to the replacement data. The data conversion method according to claim 1, wherein the public content data is data for displaying a combination of data other than the character string in the content data and the replacement data.   A program for causing a computer to execute the data conversion method according to any one of claims 1 to 7. A means for reading content data to be processed from a content data storage unit that stores content data to be disclosed including text data, and specifying a character string that should be prevented from being output as text data from the content data;
Conversion means for maintaining the content of the character string and converting the specified character string into replacement data other than the text data;
Generating means for generating public content data for maintaining the public content of the content data using data other than the character string in the content data and the replacement data, and storing the public content data in a storage device;
When the content data request is received, it is determined whether the transmission source of the content data request is registered in the disclosure rejection list or the disclosure permission list, and the transmission source of the content data request is the disclosure rejection If it is determined that it is registered in the list or not registered in the publishing permission list, the public content data stored in the storage device is transmitted to the transmission source of the content data request, and When it is determined that the transmission source of the content data request is not registered in the disclosure rejection list or registered in the disclosure permission list, the content data stored in the content data storage unit is A delivery means for sending to the sender of the content data request;
A data conversion device.

Images