JP4970615B1 - Content data management system and program - Google Patents

Abstract

An object of the present invention is to efficiently exclude illegal contents from a network site such as a video sharing site.
In a content data management system, a receiving unit receives content data transmitted from a user's terminal via a network. The detection unit 103 executes digital watermark detection processing. If the predetermined information is detected by the detection unit 103 from the content data received by the receiving unit 101 before the predetermined period elapses, the control unit 104 controls the disclosure unit 102 not to disclose the content data. To do. On the other hand, if the predetermined information is not detected by the detection unit 103 from the content data before the predetermined period elapses, the control unit 104 controls the publishing unit 102 to publish the content data.
[Selection] Figure 5

Description

  The present invention relates to a content data management system and program. In particular, the present invention relates to an unauthorized content distribution preventing apparatus using digital watermark.

  The fact that content protected by copyright law has been illegally uploaded (uploaded) to video sharing sites has become a social problem. Many video-sharing websites operate to detect illegally uploaded contents, that is, illegal (illegal) contents manually and delete them manually. For sites with many users, the effort is very high. It has become a big thing. In addition, since a large number of users upload content, it is not possible to cope with the amount of content that is explosively increasing manually, and a considerable amount of illegal content remains being uploaded. Some content continues to be uploaded, no matter how many times it is deleted.

  Conventionally, there is a technique in which a digital watermark is embedded in content and used for discovery of illegal content (see, for example, Patent Documents 1 to 5).

JP 2001-31570 A JP 2004-348224 A JP 2001-209318 A JP 2001-325181 A JP 2002-245192 A

  In the prior art, there is a problem that illegal contents cannot be efficiently excluded from the video sharing site.

  An object of the present invention is to efficiently exclude illegal content from a site on a network, such as a video sharing site.

A content data management system according to one aspect of the present invention includes:
A receiving unit for receiving content data transmitted from a user's terminal via a network;
A publishing unit that publishes the content data received by the receiving unit to a site on a network;
If a digital watermark detection process for detecting a digital watermark embedded in content data is executed and predetermined information is embedded as a digital watermark in the content data received by the receiving unit, the predetermined data is extracted from the content data. A detection unit for detecting information;
If the predetermined information is detected by the detection unit from the content data received by the reception unit before the predetermined period elapses, the disclosure unit is controlled not to disclose the content data, and the predetermined unit If the predetermined information is not detected by the detection unit from the content data before the period elapses, a control unit that controls the disclosure unit to disclose the content data is provided.

The detection unit performs a process of detecting a digital watermark embedded in each of a plurality of frame data constituting content data as a digital watermark detection process,
The control unit does not complete execution of the digital watermark detection process by the detection unit for a part of the frame data of the content data received by the reception unit until the predetermined period elapses, and the content If the predetermined information is not detected from the frame data for which the detection unit has completed execution of the digital watermark detection process among the plurality of frame data of the data, the disclosure unit is controlled to release the content data When the detection unit is controlled to continue execution of the digital watermark detection process, and the predetermined information is detected by the detection unit from any of the partial frame data, the content released by the release unit Delete data from the site.

  The control unit determines that the predetermined period has elapsed about t seconds (t is a real number satisfying 10 ≦ t ≦ 300) after the reception unit starts receiving content data.

  The control unit determines that the predetermined period has elapsed when the reception unit completes reception of content data.

  The control unit determines that the predetermined period has elapsed when the detection unit completes execution of the digital watermark detection process.

The detection unit performs digital watermark detection processing on the content data published by the publication unit,
The control unit deletes the content data from the site when the detection unit detects the predetermined information from the content data published by the publication unit.

The predetermined information includes information on a provider of content data,
The content data management system further includes:
When the predetermined information is detected by the detecting unit from the content data received by the receiving unit, it is reported that disclosure of the content data to the site is prevented or stopped based on the predetermined information And a report unit that creates a report to be transmitted to the terminal of the content data provider via the network.

The predetermined information includes information on a provider of content data,
The content data management system further includes:
When the predetermined information is detected by the detecting unit from the content data received by the receiving unit, based on the predetermined information, the disclosure of the content data to the site is prevented or stopped. A charging unit is provided for charging the content data provider for the consideration.

The predetermined information includes information related to attributes of content data,
The content data management system further includes:
A storage unit that stores in advance user information indicating attributes of content data that can be provided for each user of the content data;
An accumulation unit that accumulates the predetermined information as history information each time the predetermined information is detected by the detection unit from the content data received by the reception unit;
The user information stored in the storage unit is compared with the history information stored in the storage unit, and based on the comparison result, content data is to be released to the site from among users of the content data And a specifying unit for specifying a user.

A program according to one aspect of the present invention is:
Computer
A receiving unit for receiving content data transmitted from a user's terminal via a network;
A publishing unit that publishes the content data received by the receiving unit to a site on a network;
If a digital watermark detection process for detecting a digital watermark embedded in content data is executed and predetermined information is embedded as a digital watermark in the content data received by the receiving unit, the predetermined data is extracted from the content data. A detection unit for detecting information;
The disclosure unit is controlled to suspend publication of the content data received by the reception unit until a predetermined period elapses. When the predetermined period elapses, (1) from the content data, the detection unit If the predetermined information is detected by the control unit, the disclosure unit is controlled not to disclose the content data. (2) If the predetermined information is not detected from the content data by the detection unit, the content It is for functioning as a control unit that controls the disclosure unit so that data is disclosed.

  In one aspect of the present invention, the content data management system prevents the content data from being disclosed if the predetermined information is detected from the content data when a predetermined period has elapsed, and the predetermined information is obtained from the content data. If is not detected, the content data is made public. Therefore, according to one aspect of the present invention, it is possible to efficiently remove illegal content from a network site such as a video sharing site.

FIG. 3 is a diagram showing a mechanism of an unauthorized content exclusion service according to the first embodiment. 5 is a flowchart showing a flow of an unauthorized content exclusion service according to the first embodiment. 5 is a flowchart showing a flow of an unauthorized content exclusion service according to the first embodiment. FIG. 4 shows an example of a report according to the first embodiment. 1 is a block diagram showing a configuration of a content data management system according to Embodiment 1. FIG. 2 is a diagram illustrating an example of a hardware configuration of a content data management system according to Embodiment 1. FIG. 5 is a flowchart showing the operation of the content data management system according to the first embodiment. FIG. 3 is a block diagram showing a configuration of a content data management system according to a second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a mechanism of an unauthorized content exclusion service according to the present embodiment.

  In FIG. 1, company X, which is a content provider, provides contents to companies A and B, which are cable TV (television) companies, company C, which is an Internet distribution company, company D, which is a satellite broadcasting company, and the like. . Company A, Company B, Company C, Company D, etc. broadcast or distribute the provided content. Mr. P, Mr. Q, Mr. R, etc. who are general subscribers watch the broadcasted or distributed content for a fee.

  Among general subscribers, there is a person, such as Mr. P, who illegally uploads a broadcast or distributed content to a PC 300 (personal computer) and uploads it to an Internet video sharing site. If illegal content uploaded in this way is left unattended, the profits of company X, which is the content provider, will be lost. Therefore, in the present embodiment, company X, which is a content provider, signs a contract with company W, which is a video sharing site operator, and uses the illegal content exclusion service provided by company W.

  Company X joins W's illegal content elimination service by paying an enrollment fee. Company W issues a member number and sends electronic watermark embedding apparatus 200, manual 201 (electronic watermark embedding procedure manual) and the like to company X, which has become a member of the illegal content exclusion service. The digital watermark embedding apparatus 200 is software having a function of embedding a digital watermark in content when the content is input, or a combination of software and hardware.

  When Company X provides content to Company A, Company B, Company C, Company D, etc., the content is important (does not want to be uploaded to a video sharing site or sent to the Internet). For example, a digital watermark is embedded in the content in advance using the digital watermark embedding apparatus 200. On the other hand, digital watermarks are not embedded in unimportant contents (or contents that are desired to be actively distributed to the Internet, such as program advertisements). When company X embeds a digital watermark, the digital watermark embedding apparatus 200 embeds, for example, a “shared NG mark” (flag data indicating important content) as a digital watermark. The digital watermark embedding device 200 also includes information for identifying the content provider (for example, a member number of the unauthorized content exclusion service) and information for identifying the content provider (Company A, Company B, Company C, Information indicating a content attribute (for example, a program genre or title, a broadcast or distributed channel or time zone), and the like are embedded as a digital watermark. At this time, the digital watermark embedding apparatus 200 uses, for example, a member number of an unauthorized content exclusion service issued to Company X as key information for embedding a digital watermark. In addition, you may employ | adopt the system that W company sells the key information in which the effective period and the frequency | count of use were defined to X company. In that case, Company X purchases key information from Company W as necessary.

  Company W installs a content data management system 100. When content is uploaded from a plurality of users including Mr. P, the content data management system 100 performs digital watermark detection processing on the content. When the content data management system 100 detects the “shared NG mark” from the content, the content data management system 100 prevents the content from being uploaded to the video sharing site. In this case, the content data management system 100 detects various information embedded as a digital watermark and records the detected information. On the other hand, when the content data management system 100 does not detect the “shared NG mark” from the content, the content data management system 100 uploads the content to the video sharing site.

  The company W creates a report 202 at an arbitrary timing (for example, monthly) based on the information recorded by the content data management system 100 and sends it to the company X. In this report 202, for example, the number and date / time of the up-prevention and the content of the cable TV / Internet distribution / satellite broadcasting company where the content was broadcast or distributed are reported.

  Company X pays Company W as compensation for preventing content with a “shared NG mark” from being uploaded to the video sharing site. This reward may be a fixed fee (for example, monthly fee) or a pay-as-you-go fee (that is, spot).

By introducing the above mechanism, the following various effects can be obtained.
・ Because illegal contents can be excluded from video sharing sites, the interests of content providers can be protected.
・ Video sharing site operators can easily identify unauthorized content.
-Since it becomes possible to automatically detect unauthorized content, the human work of searching for and deleting unauthorized content becomes unnecessary.
・ A new revenue source for video sharing website operators. Therefore, an incentive to eliminate illegal contents is born and a new business is created.
・ Some solutions can be found in the spread of illegal content that has become a social problem.
Since information indicating that the content is illegal can be inserted into the video as a digital watermark, it is possible to objectively specify that the content is illegal. Therefore, for example, if illegal content is recorded, it can be used as an article in civil or criminal trials.

  Although the case where the content is a moving image is described here, the content may be other than the moving image, such as music or a still image. In addition, here, a case where a content provider company X joins an unauthorized content exclusion service is described. However, a cable TV company company A and company B, an Internet distribution company company C, a satellite broadcasting company. Company D or the like may join the unauthorized content exclusion service. In this case, the same effect as described above can be obtained. In addition, ministries and agencies that hold contents that include national personal information and national secrets, companies that hold contents that include personal information and trade secrets of customers or employees, and the like may join the unauthorized content exclusion service. In this case, it is possible to prevent the outflow of content.

  Below, the specific example of the flow of an unauthorized content exclusion service is demonstrated.

  2 and 3 are flowcharts showing the flow of the unauthorized content exclusion service. FIG. 4 is a diagram illustrating an example of the report 202.

  In FIG. 2, company X, a content provider, provides a VTR (VTR) for providing content Y to companies A and B, which are cable TV companies, company C, an Internet distribution company, and company D, a satellite broadcasting company. Dubbing (digital video). Since the content Y is important content for the company X, the company Y uses the digital watermark embedding apparatus 200 to use the “shared NG mark” and “provided company name ( Meta information such as “Company A”), provision date, program provision contract number, etc. is inserted. Further, Company X determines a copy protection level as to which range of copying of the content Y is permitted, and includes it in the program provision contract for the content Y.

  Next, company X passes a document (which may be paper or electronic) in which a program provision contract is written and a VTR in which content Y is recorded to company A, for example.

  Company A uses the existing copy protection technology to copy the copy protection information that matches the program provision contract written in the document received from Company X into content Y recorded in the VTR provided by Company X. Append. The “copy protection information” is “information indicating in what range copying of the content is allowed”. For example, “only once allowed”, “allowed up to 10 times”, “unlimitedly allowed”, “ It can be determined as “not allowed”. Company A turns on program Z including content Y with copy protection information added thereto.

  In FIG. 3, Mr. P who is a cable TV subscriber of company A views program Z. At this time, Mr. P records the program Z on a DVD with a home DVD (Digital Versatile Disc) recording device. Whether Mr. P can record on the DVD or not depends on the copy protection information of the content Y included in the program Z. If “not allowed” is set, recording on a DVD is not possible. In the case where “only once” is recorded on the hard disk of the home DVD recorder, the content Y recorded on the hard disk can be deleted and moved to the DVD.

  Next, Mr. P uses the PC 300 to convert the program Z recorded on the DVD into a moving image file in the video format, and stores it in the hard disk or the like of the PC 300.

  Next, Mr. P uploads the video file of the program Z from the hard disk of the PC 300 to the video sharing site of company W.

  Company W, which is a video sharing site operator, detects the “shared NG mark” by subjecting the video file uploaded by Mr. P to the digital watermark detection processing of the content data management system 100. That is, the company W detects that the video of the program Z has been illegally uploaded to the video sharing site.

  Next, company W performs processing not to upload the video file of program Z to the video sharing site, or deletes the video file of program Z from the video sharing site.

  Next, the company W stores the moving image file of the program Z in the storage device (storage) as an article.

  Next, company W detects “provided company name (such as“ Company A ”)”, provision date, program provision contract detected together with “shared NG mark” by the digital watermark detection processing of content data management system 100. A report 202 as shown in FIG. 4 is created using information (meta information) on the video file of the program Z such as a number.

  Next, Company W sends a report 202 to Company X, reports that content Y has been uploaded to the video sharing site, and receives compensation for the unauthorized content elimination work from Company X. In response to this, Company X can submit a damage report to the police along with physical evidence, or call out to Company A.

  It is desirable that all operations performed by company W be automatically performed by content data management system 100.

  Hereinafter, the configuration of the content data management system 100 will be described.

  FIG. 5 is a block diagram showing a configuration of the content data management system 100.

  In FIG. 5, the content data management system 100 includes a reception unit 101, a disclosure unit 102, a detection unit 103, a control unit 104, a storage unit 105 (database), a report unit 106, and a billing unit 107.

  Further, the content data management system 100 includes hardware such as a processing device 191, a storage device 192, an input device 193, and an output device 194. The hardware is used by each part of the content data management system 100. For example, the processing device 191 is used to perform calculation, processing, reading, writing, and the like of data and information in each unit of the content data management system 100. The storage device 192 is used to store the data and information. The input device 193 is used to input the data and information, and the output device 194 is used to output the data and information.

  The receiving unit 101 receives content data transmitted from a user terminal via a network.

  The publishing unit 102 registers the content data received by the receiving unit 101 in a server at a site on the network, and sets the content data in a state where the content data can be used (viewed) on the site. That is, the publishing unit 102 publishes the content data received by the receiving unit 101 to a site on the network.

  The detection unit 103 executes digital watermark detection processing by the processing device 191. In the present embodiment, since the content data is a moving image composed of a plurality of frame data (pictures), the detection unit 103 detects a digital watermark embedded in each frame data as a digital watermark detection process. Execute. Thereby, the detection unit 103 detects the predetermined information from the content data if the predetermined information is embedded as a digital watermark in the content data received by the reception unit 101. At this time, if the information embedded as the digital watermark is different among the plurality of frame data constituting the content data, the detection unit 103 distinguishes and detects each piece of information.

  If predetermined information is detected by the detecting unit 103 from the content data received by the receiving unit 101 before the predetermined period elapses, the control unit 104 processes the publishing unit 102 so that the content data is not disclosed. Control is performed by the device 191. On the other hand, if the predetermined information is not detected by the detection unit 103 from the content data before the predetermined period elapses, the control unit 104 controls the publishing unit 102 to release the content data by the processing device 191. To do. Thereby, illegal contents can be efficiently excluded from the site on the network.

  Whenever the detection unit 103 detects predetermined information (including information related to attributes of content data) from the content data received by the reception unit 101, the storage unit 105 uses the predetermined information as history information by the storage device 192. accumulate.

  When the detection unit 103 detects predetermined information (including information related to a provider of content data) from the content data received by the reception unit 101, the reporting unit 106 determines the site of the content data based on the information. The processing device 191 creates a report 202 that reports that disclosure to the Internet has been prevented or stopped. Then, the reporting unit 106 transmits the created report 202 to the terminal of the content data provider via the network.

  When the detection unit 103 detects predetermined information (including information related to a provider of content data) from the content data received by the reception unit 101, the charging unit 107 determines the site of the content data based on the information The provider of the content data is charged for compensation for the prevention or suspension of the disclosure.

  FIG. 6 is a diagram illustrating an example of a hardware configuration of the content data management system 100.

  6, the content data management system 100 includes one or a plurality of computers, and includes an LCD 901 (Liquid / Crystal / Display), a keyboard 902 (K / B), a mouse 903, an FDD 904 (Flexible Disk / Drive), and a CDD 905. (Compact / Disc / Drive) and a printer 906 are provided. These hardware devices are connected by cables and signal lines. Instead of the LCD 901, a CRT (Cathode / Ray / Tube) or other display device may be used. Instead of the mouse 903, a touch panel, a touch pad, a trackball, a pen tablet, or other pointing devices may be used.

  The content data management system 100 includes a CPU 911 (Central Processing Unit) that executes a program. The CPU 911 is an example of a processing device 191. The CPU 911 includes a ROM 913 (Read / Only / Memory), a RAM 914 (Random / Access / Memory), a communication board 915, an LCD 901, a keyboard 902, a mouse 903, an FDD 904, a CDD 905, a printer 906, and an HDD 920 (Hard / Disk) via a bus 912. Connected with Drive) to control these hardware devices. Instead of the HDD 920, a flash memory, an optical disk device, a memory card reader / writer, or other recording medium may be used.

  The RAM 914 is an example of a volatile memory. The ROM 913, the FDD 904, the CDD 905, and the HDD 920 are examples of nonvolatile memories. These are examples of the storage device 192. The communication board 915, the keyboard 902, the mouse 903, the FDD 904, and the CDD 905 are examples of the input device 193. The communication board 915, the LCD 901, and the printer 906 are examples of the output device 194.

  The communication board 915 is connected to a LAN (Local / Area / Network) or the like. The communication board 915 is not limited to a LAN, but is an IP-VPN (Internet, Protocol, Private, Network), a wide area LAN, an ATM (Asynchronous / Transfer / Mode) network, a WAN (Wide / Area / Network), or the Internet. It does not matter if it is connected to. LAN, WAN, and the Internet are examples of networks.

  The HDD 920 stores an operating system 921 (OS), a window system 922, a program group 923, and a file group 924. The programs in the program group 923 are executed by the CPU 911, the operating system 921, and the window system 922. The program group 923 includes programs that execute the functions described as “˜units” in the description of the present embodiment. The program is read and executed by the CPU 911. The file group 924 includes data, information, and signal values described as “˜data”, “˜information”, “˜ID (identifier)”, “˜flag”, and “˜result” in the description of this embodiment. And variable values and parameters are included as items of “˜file”, “˜database”, and “˜table”. The “˜file”, “˜database”, and “˜table” are stored in a recording medium such as the RAM 914 or the HDD 920. Data, information, signal values, variable values, and parameters stored in a recording medium such as the RAM 914 and the HDD 920 are read out to the main memory and the cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. It is used for processing (operation) of the CPU 911 such as calculation, control, output, printing, and display. During the processing of the CPU 911 such as extraction, search, reference, comparison, calculation, calculation, control, output, printing, and display, data, information, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory. Remembered.

  The arrows in the block diagrams and flowcharts used in the description of this embodiment mainly indicate input / output of data and signals. Data and signals are recorded in a memory such as the RAM 914, a flexible disk (FD) of the FDD 904, a compact disk (CD) of the CDD 905, a magnetic disk of the HDD 920, an optical disk, a DVD, or other recording media. Data and signals are transmitted by a bus 912, a signal line, a cable, or other transmission media.

  In the description of the present embodiment, what is described as “to part” may be “to circuit”, “to device”, “to device”, and “to step”, “to process”, “to” ~ Procedure "," ~ process ". That is, what is described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, what is described as “˜unit” may be realized only by software, or only by hardware such as an element, a device, a board, and wiring. Alternatively, what is described as “to part” may be realized by a combination of software and hardware, or a combination of software, hardware and firmware. Firmware and software are stored as programs in a recording medium such as a flexible disk, a compact disk, a magnetic disk, an optical disk, and a DVD. The program is read by the CPU 911 and executed by the CPU 911. That is, the program causes the computer to function as “to part” described in the description of the present embodiment. Or a program makes a computer perform the procedure and method of "-part" described by description of this Embodiment.

  Hereinafter, a specific example of the operation of the content data management system 100 (the content data management method according to the present embodiment and the processing procedure of the program according to the present embodiment) will be described using the examples illustrated in FIGS. 2 and 3. explain.

  FIG. 7 is a flowchart showing the operation of the content data management system 100.

  In step S101, the receiving unit 101 receives a video file (an example of content data) of a program Z transmitted from the PC 300 (an example of a terminal) of Mr. P (an example of a user) via the Internet (an example of a network). .

  In step S102, when the receiving unit 101 starts receiving the moving image file, the control unit 104 sequentially executes digital watermark detection processing on the frame data received by the receiving unit 101 among a plurality of frame data constituting the moving image file. The detection unit 103 is controlled by the processing device 191 so as to do this.

  In step S103, the detection unit 103 causes the processing device 191 to execute a digital watermark detection process on the frame data received by the reception unit 101 for a preset t seconds. Specifically, first, the detection unit 103 confirms whether or not a digital watermark is embedded in the first frame data received by the reception unit 101. If the digital watermark is embedded, the detection unit 103 extracts the digital watermark from the frame data, and checks whether the “shared NG mark” (an example of predetermined information) is included in the digital watermark. If the “shared NG mark” is included, the detecting unit 103 detects the “shared NG mark” and the meta information, and proceeds to step S104. On the other hand, if the digital watermark is not embedded in the frame data, or if the digital watermark is present but the “shared NG mark” is not included, the detection unit 103 sequentially performs the same processing on the second and subsequent frame data. Do. At this time, the detection unit 103 stores in the storage device 192 which frame data the execution of the digital watermark detection processing has been completed. If the detection unit 103 does not detect the “shared NG mark” by t seconds after the reception unit 101 starts receiving the moving image file, the process proceeds to step S105. If the detection unit 103 completes the digital watermark detection process for all the frame data of the moving image file before t seconds have elapsed, the process immediately proceeds to step S105. Note that the control unit 104 uses the processing device 191 to determine whether t seconds have elapsed.

  In step S104, the control unit 104 controls the publishing unit 102 by the processing device 191 so as not to publish the moving image file on the moving image sharing site, and the process proceeds to step S109.

  Here, t is a real number that satisfies 10 ≦ t ≦ 300, more preferably 10 ≦ t ≦ 30, and most preferably 10 (however, some errors are allowed).

  Video files that can be uploaded to a general video sharing site are limited to about 15 minutes in length. Normally, it is considered that the execution of the digital watermark detection process is completed for all the frame data of the moving image file of about 15 minutes in 300 seconds. However, the longer t is, the more time is required for step S103 and the later it is to proceed to step S105, which will be described later, the user who wants to upload appropriate content is uploaded to the video sharing site. It will wait for a long time. Therefore, it is desirable to shorten t. Normally, it is considered that the execution of the digital watermark detection process is completed for at least the first frame data of the moving image file in 10 seconds. Therefore, by setting the t to 10 (or 10 to 30), if the “shared NG mark” is not detected from the top frame data (or several frame data from the top) of the video file, It can be estimated that the file is not illegal content, and the video file is provisionally uploaded on the video sharing site in step S105 described later. However, since it is possible to mix content embedded with the “shared NG mark” and content not embedded with the “shared NG mark” in the video file, the remaining frame data of the video file is stored in step S106 described later. The execution of the digital watermark detection process is continued for. If a “shared NG mark” is detected from any of the frame data in step S107, which will be described later, the video file is determined to be illegal content, and the video file provisionally uploaded in step S108, which will be described later, is shared. By deleting from the site, it is possible to eliminate illegal content without fail.

  In step S105, since the “shared NG mark” has not been detected from the video file until t seconds have elapsed, the control unit 104 controls the publishing unit 102 to publish the video file on the video sharing site. .

  In step S106, the control unit 104 reads from the storage device 192 which frame data has been subjected to the digital watermark detection process, and the detection unit 103 executes the digital watermark detection process for all frame data of the moving image file. The processing device 191 determines whether the processing is completed. If the execution of the digital watermark detection process is completed for all the frame data, it is understood that the moving image file received by the receiving unit 101 is not an illegal content, and thus the operation is terminated. If the execution of the digital watermark detection process is not completed for a part of the frame data of the moving image file, the control unit 104 controls the detection unit 103 by the processing device 191 so as to continue the digital watermark detection process, and step S107. Proceed to

  In step S107, as in step S103, the detection unit 103 uses the processing device 191 to perform digital watermark detection processing on frame data for which the execution of digital watermark detection processing has not been completed among the frame data received by the reception unit 101. Execute. Specifically, first, the detection unit 103 embeds the digital watermark in the first frame data in the order received by the reception unit 101 among the frame data for which the execution of the digital watermark detection process has not been completed. Please check. If the digital watermark is embedded, the detection unit 103 extracts the digital watermark from the frame data. If the “shared NG mark” is included in the digital watermark, the detection unit 103 sets the “shared NG mark”. And meta information is detected, and the process proceeds to step S108. On the other hand, if the digital watermark is not embedded in the frame data, or if the digital watermark is present but the “shared NG mark” is not included, the detection unit 103 sequentially performs the same processing on the second and subsequent frame data. Do. If the detection unit 103 completes the digital watermark detection process for all the frame data of the moving image file without detecting the “shared NG mark”, the moving image file received by the receiving unit 101 may not be illegal content. To understand, the operation is terminated.

  In step S108, the control unit 104 deletes the moving image file disclosed by the disclosing unit 102 from the moving image sharing site by the processing device 191, and the process proceeds to step S109.

  In step S <b> 109, the accumulation unit 105 creates meta information detected by the detection unit 103 from the moving image file received by the receiving unit 101, the current time (that is, the date and time when the uploading of the moving image file was blocked) and other reports 202. Are stored in the storage device 192 as history information together with necessary information (content encoding format, IP address, time zone when the user uploaded the content, etc.). The meta-information includes, for example, a member number of an unauthorized content exclusion service of company X (an example of information related to a provider of content data), a company name of company A (an example of information related to a provider of content data), and the program Z A genre and a title (an example of information related to content data attributes), a channel and a time zone in which the program Z was broadcast (an example of information related to content data attributes) are included.

  In step S110, the reporting unit 106 describes the meta information detected by the detecting unit 103 from the moving image file received by the receiving unit 101, and indicates that the release of the moving image file to the moving image sharing site has been prevented or stopped. A report 202 to be reported is created by the processing device 191. Then, the report unit 106 transmits the created report 202 to the company X terminal via the Internet. As a result, Company X will be able to determine the fact that the content Y provided to Company A has been uploaded (or is about to be uploaded) to the video sharing site of Company W, and the date and time when it was blocked. I can know.

  In step S111, the charging unit 107 refers to, for example, the member number of the unauthorized content exclusion service of the company X among the meta information detected by the detection unit 103 from the moving image file received by the receiving unit 101, to the company X. Charge processing is performed by the processing device 191.

  Note that the order of steps S101 to S111 is not limited to that described above, and can be changed as appropriate. A plurality of steps may be performed in parallel.

  In step S103, the detection unit 103 executes the digital watermark detection process in an arbitrary order instead of executing the digital watermark detection process in order from the first frame data received by the reception unit 101. Also good. For example, if the position (numbered number) of the frame data that can detect the “shared NG mark” more reliably within t seconds can be specified, the frame at the specific position is not the first frame data. You may make it perform a digital watermark detection process from data.

  In step S103, instead of determining whether t seconds have elapsed, the control unit 104 may determine, for example, whether the reception unit 101 has completed reception of the moving image file. In this case, if the detection unit 103 detects the “shared NG mark” before the reception of the moving image file is completed, the process proceeds to step S104. On the other hand, if the detection unit 103 does not detect the “shared NG mark” until the reception of the moving image file is completed, the process proceeds to step S105. In this way, a user who wants to upload appropriate content waits only for the time required for uploading the video file (the time that the user must wait), so that his content is uploaded on the video sharing site. You don't have to wait long.

  Alternatively, in step S103, instead of determining whether t seconds have elapsed, the control unit 104 determines, for example, whether the detection unit 103 has completed the execution of digital watermark detection processing for all frame data of the moving image file. May be. In this case, if the detection unit 103 detects the “shared NG mark” from any frame data of the moving image file, the process proceeds to step S104. On the other hand, if the detection unit 103 does not detect the “shared NG mark” from any frame data of the moving image file, the process proceeds to step S105. In this way, steps S106 to S108 are unnecessary, and it is possible to ensure that illegal content is not uploaded onto the video sharing site.

  In step S <b> 107, the detection unit 103 may cause the processing device 191 to execute digital watermark detection processing for all frame data of the moving image file received by the reception unit 101. In this case, the digital watermark detection process is re-executed for at least some of the frame data, but step S106 can be omitted. As a result, there is an effect that it is not necessary to store in the storage device 192 which frame data the execution of the digital watermark detection processing is completed. Furthermore, steps S107 to S109 may be performed as a batch process for all moving image files released on that day at a fixed time every day (for example, 23:00). In this case, when one moving image file is received in step S101, the operation relating to the moving image file is temporarily ended in step S105 (when the process does not proceed to step S104). Then, on and after the same day, step S107 and subsequent steps are performed for all the moving image files whose operations have been completed in step S105.

  When steps S107 to S109 are performed as batch processing as described above, the operation time zone of batch processing can be set in consideration of the load information of other work of the content data management system 100. Unauthorized content that has been released by mistake is deleted within at least 24 hours after publication when batch processing is performed on a regular basis every day. As described above, for example, when a video file in which illegal content with “shared NG mark” is connected after legitimate content (for example, video shot by the user himself / herself) is uploaded, in step S103, t In some cases, the “shared NG mark” cannot be detected within seconds, and the moving image file is released in step S105. In order to cope with such a case, an efficient illegal content exclusion process can be realized by detecting “shared NG mark” in all the moving image files in step S107 and deleting illegal contents collectively in step S108. .

  Further, in step S110, the report unit 106 reads out the history information of the current month related to the content of the company X from the storage unit 105, for example, for each month, and reports the report 202 that collectively describes the meta information included in the read history information. You may create it. Also in this case, the report unit 106 transmits the created report 202 to the company X terminal via the Internet. As a result, in this month, company X, company A, company B, company C, company D, etc., what kind of content provided to company W was uploaded to the video sharing site of company W (or is likely to be uploaded). Or the date and time when it was blocked.

  Similarly, in step S111, the billing unit 107 reads the current month history information related to the content of company X from the storage unit 105, for example, every month, and refers to the meta information included in the read history information, and illegal content. Exclusion service members may be charged for the current month.

  In the present embodiment, the load on the content data management system 100 and the operability of the user are reduced by combining the process of blocking the release of the moving image file (step S104) and the process of deleting the released moving image file (step S108). It is possible to perform illegal content elimination processing in consideration.

  If the unauthorized content exclusion process is to be performed only in steps S103 to S105, the user who wants to upload legal contents waits until the detection process of the “shared NG mark” is completed for all frame data. As a result, the operability of the user deteriorates and the load on the content data management system 100 increases. On the other hand, if unauthorized content exclusion processing is to be performed only in steps S107 and S108, all unauthorized content will be released for a maximum of 24 hours, and the effect of preventing unauthorized content leakage will be reduced. For this reason, the balance between the strength of unauthorized content exclusion processing and the convenience of the user is adjusted by combining two types of processing of steps S103 to S105 and steps S107 and S108 and arbitrarily setting t (seconds). Can do.

As an illegal content exclusion service, a sample of content (part of content) to be “shared NG” is registered in advance in a video sharing site (Company W), and compared with the sample, an unauthorized content is detected. . Compared with the detection method using this sample, the detection method using the digital watermark in this embodiment has the following advantageous effects.
-Ensuring confidentiality of information: In the detection method using samples, it is necessary to register a part of the content in the video sharing site, so it is necessary to provide samples to the video sharing site even for highly confidential data. On the other hand, in the detection method using the digital watermark of this embodiment, only the information included in the digital watermark meta-information needs to be presented on the video sharing site, and there is no need to provide the content itself.
Processing efficiency: In the detection method using samples, it is necessary to register individual samples for each content. On the other hand, in the detection method using the digital watermark according to this embodiment, it is not necessary to register individual information for each content. For the report creation process, it is necessary to provide meta information from the content provider (Company X) to the video sharing site (Company W), but that is only necessary when changing the registered information of the meta information. There is no need to send data frequently.

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 8 is a block diagram showing a configuration of content data management system 100 according to the present embodiment.

  8, the content data management system 100 includes a storage unit 108 (database) and a specifying unit 109 in addition to the same components as those in the first embodiment shown in FIG.

  The storage unit 108 stores in advance, in the storage device 192, user information indicating attributes of content data that can be provided for each user of the content data.

  The specifying unit 109 compares the user information stored in the storage unit 108 with the history information stored in the storage unit 105 by the processing device 191. Based on the comparison result, the specifying unit 109 specifies a user who intends to publish the content data on the site from among the users of the content data.

  Hereinafter, a specific example of the operation of the content data management system 100 (the content data management method according to the present embodiment and the processing procedure of the program according to the present embodiment) will be described using the example illustrated in FIG.

  The storage unit 108 is a channel or the like (contents) that can be viewed by contract with the company A for each cable TV subscriber (an example of content data users) of the company A (an example of content data provider) including Mr. P. User information indicating an example of data attributes is stored in the storage device 192 in advance.

  The specifying unit 109 reads history information related to the content of the company X from the storage unit 105, and among the meta information included in the read history information, “providing company name (“ Company A ””, etc.) ”, program genre And the channel, time zone, etc., on which the title, program is broadcasted or distributed. Then, the specifying unit 109 searches the storage unit 108 with the processing unit 191 using the referenced information as a key, and from the cable TV subscribers of the company A, those who intend to publish the content of the company X on the video sharing site Is identified. Here, “specify” is not limited to specifying one cable TV subscriber, but includes specifying a small number of candidates from the cable TV subscribers of company A (narrowing down candidates). . Company A can take measures such as calling attention to the cable TV subscriber specified by the specifying unit 109.

  When the history information is read, the specifying unit 109 may read history information having similar information such as the content encoding format, the IP address, and the time zone when the user uploaded the content.

  The storage unit 108 and the identification unit 109 handle information about subscribers such as Company A, Company B, Company C, Company D, etc., so Company A, Company B, Company C rather than Company W, which is a video sharing site operator. It is desirable to be installed in each of the company D and the like. For example, in company A, it is conceivable to install a storage unit 108 that stores user information of subscribers of company A only. The same applies to other companies.

  As mentioned above, although embodiment of this invention was described, you may implement in combination of 2 or more among these embodiment. Alternatively, one of these embodiments may be partially implemented. Alternatively, two or more of these embodiments may be partially combined. In addition, this invention is not limited to these embodiment, A various change is possible as needed.

  100 content data management system, 101 receiving unit, 102 disclosure unit, 103 detection unit, 104 control unit, 105 storage unit, 106 reporting unit, 107 charging unit, 108 storage unit, 109 identification unit, 191 processing unit, 192 storage unit, 193 input device, 194 output device, 200 digital watermark embedding device, 201 manual, 202 report, 300 PC, 901 LCD, 902 keyboard, 903 mouse, 904 FDD, 905 CDD, 906 printer, 911 CPU, 912 bus, 913 ROM, 914 RAM, 915 communication board, 920 HDD, 921 operating system, 922 window system, 923 program group, 924 file group.

Claims (10)

A receiving unit for receiving content data transmitted from a user's terminal via a network;
A publishing unit that publishes the content data received by the receiving unit to a site on a network;
A digital watermark detection process for detecting a digital watermark embedded in each of a plurality of frame data constituting the content data is executed, and predetermined information is embedded as a digital watermark in the content data received by the receiving unit. For example, a detection unit that detects the predetermined information from the content data;
If the predetermined information is detected by the detection unit from the content data received by the reception unit before the predetermined period elapses, the disclosure unit is controlled not to disclose the content data, and the predetermined unit If the predetermined information is not detected by the detection unit from the content data before the period elapses, the control unit controls the disclosure unit to disclose the content data, and the predetermined period Until the elapse of time, the detection unit does not complete the execution of the digital watermark detection process for a part of the frame data of the content data received by the reception unit, and among the plurality of frame data of the content data, The predetermined information is detected from the frame data for which execution of the digital watermark detection process has been completed by the detection unit. If not, the detecting unit controls the publishing unit to publish the entire content data, and continues the execution of the digital watermark detection process for the content data even after the entire content data is published by the publishing unit. And when the predetermined information is detected by the detection unit from any of the partial frame data, the control unit deletes the content data published by the publication unit from the site. Feature content data management system. A receiving unit for receiving content data transmitted from a user's terminal via a network;
A publishing unit that publishes the content data received by the receiving unit to a site on a network;
A digital watermark detection process for detecting a digital watermark embedded in each of a plurality of frame data constituting the content data is executed, and predetermined information is embedded as a digital watermark in the content data received by the receiving unit. For example, a detection unit that detects the predetermined information from the content data;
If the predetermined information is detected by the detection unit from the content data received by the reception unit before the predetermined period elapses, the disclosure unit is controlled not to disclose the content data, and the predetermined unit If the predetermined information is not detected by the detection unit from the content data before the period elapses, the control unit controls the disclosure unit to disclose the content data, and the predetermined period Until the elapse of time, the detection unit does not complete the execution of the digital watermark detection process for a part of the frame data of the content data received by the reception unit, and among the plurality of frame data of the content data, The predetermined information is detected from the frame data for which execution of the digital watermark detection process has been completed by the detection unit. If not, the disclosure unit is controlled to publish the entire content data, and the detection unit is controlled to re-execute the digital watermark detection process for the content data after the entire content data is published by the publication unit. And, when the predetermined information is detected by the detection unit from any of the partial frame data, a control unit that deletes content data published by the disclosure unit from the site. Content data management system. The detection unit performs a process of re- executing a digital watermark detection process on the content data after the entire content data received by the reception unit is published by the publication unit, and is published on the same day by the publication unit on a regular basis. 3. The content data management system according to claim 2 , wherein the content data management system is executed as a batch process for the content data. The control unit determines that the predetermined period has elapsed approximately t seconds (t is a real number satisfying 10 ≦ t ≦ 300) after the reception unit starts receiving content data. The content data management system according to any one of claims 1 to 3 . Wherein, when the receiving unit has completed the reception of the content data, any content data management system of claims 1 to 3, characterized in that it is determined that the predetermined period of time. The predetermined information includes information on a provider of content data,
The content data management system further includes:
When the predetermined information is detected by the detecting unit from the content data received by the receiving unit, it is reported that disclosure of the content data to the site is prevented or stopped based on the predetermined information creates a report, either of the content data management system of claims 1 to 5, via the network, characterized in that it comprises a reporting unit for transmitting to the terminal of the provider of the content data. The predetermined information includes information on a provider of content data,
The content data management system further includes:
When the predetermined information is detected by the detecting unit from the content data received by the receiving unit, based on the predetermined information, the disclosure of the content data to the site is prevented or stopped. one of the content data management system of claims 1 5, characterized in that it comprises a charging unit for charging a fee to the provider of the content data. The predetermined information includes information related to attributes of content data,
The content data management system further includes:
A storage unit that stores in advance user information indicating attributes of content data that can be provided for each user of the content data;
An accumulation unit that accumulates the predetermined information as history information each time the predetermined information is detected by the detection unit from the content data received by the reception unit;
The user information stored in the storage unit is compared with the history information stored in the storage unit, and based on the comparison result, content data is to be released to the site from among users of the content data any content data management system of claims 1 to 7, characterized in that it comprises a specifying unit for specifying a user. Computer
A receiving unit for receiving content data transmitted from a user's terminal via a network;
A publishing unit that publishes the content data received by the receiving unit to a site on a network;
A digital watermark detection process for detecting a digital watermark embedded in each of a plurality of frame data constituting the content data is executed, and predetermined information is embedded as a digital watermark in the content data received by the receiving unit. For example, a detection unit that detects the predetermined information from the content data;
Until a predetermined period elapses, if it is detected the predetermined information by the detecting unit or the received content data found by the reception unit, and controls the public portion not to share the content data, wherein until a predetermined period elapses, if the predetermined information is not detected by the detecting unit from the content data, and a control unit for controlling the opening section so as to expose the content data, the predetermined Until the period of elapses, the detection unit does not complete the digital watermark detection process for a part of the frame data of the content data received by the reception unit, and a plurality of frame data of the content data Of these, the predetermined information is detected from the frame data for which the execution of the digital watermark detection processing has been completed by the detection unit. If not, the detecting unit controls the publishing unit to publish the entire content data, and continues the execution of the digital watermark detection process for the content data even after the entire content data is published by the publishing unit. And when the predetermined information is detected by the detection unit from any of the partial frame data, the control unit is configured to delete the content data published by the disclosure unit from the site. A program to make it work. Computer
A receiving unit for receiving content data transmitted from a user's terminal via a network;
A publishing unit that publishes the content data received by the receiving unit to a site on a network;
A digital watermark detection process for detecting a digital watermark embedded in each of a plurality of frame data constituting the content data is executed, and predetermined information is embedded as a digital watermark in the content data received by the receiving unit. For example, a detection unit that detects the predetermined information from the content data;
Until a predetermined period elapses, if it is detected the predetermined information by the detecting unit or the received content data found by the reception unit, and controls the public portion not to share the content data, wherein until a predetermined period elapses, if the predetermined information is not detected by the detecting unit from the content data, and a control unit for controlling the opening section so as to expose the content data, the predetermined Until the period of elapses, the detection unit does not complete the digital watermark detection process for a part of the frame data of the content data received by the reception unit, and a plurality of frame data of the content data Of these, the predetermined information is detected from the frame data for which the execution of the digital watermark detection processing has been completed by the detection unit. If not, the disclosure unit is controlled to publish the entire content data, and the detection unit is controlled to re-execute the digital watermark detection process for the content data after the entire content data is published by the publication unit. When the predetermined information is detected by the detection unit from any of the partial frame data, the content data disclosed by the disclosure unit is caused to function as a control unit for deleting from the site . Program for.

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