JP2004348224A - Illegal data distribution monitoring service system, method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the need of performing active communication associated with the detection of the illegal distribution of contents with an information management center through a network. <P>SOLUTION: A communication company terminal 1 notifies repeater systems 3 to 5 for relaying contents distribution of data for detection constituted of specific bits transferred between contents distributors who have made a contract by using a watermark information generation processing part 1a. For example, the repeater system 3 stores the data for detection in a storage device by using a finding processing part 3a, and when the data for detection are attached to the contents from a contents distributer terminal 6 received on the Internet 7, the repeater system 3 detects the illegal distribution of the contents, and notifies the communication company terminal 1, the contents distributer terminal 2 or the contents receiver terminal 6 or the like of the detection result of the illegal distribution. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology for detecting illegal distribution of digital data in an IP (Internet Protocol) network such as an STM (Synchronous Transmission Mode) network, an ATM (Asynchronous Transfer Mode) network, and the Internet. The present invention relates to a technique suitable for efficient execution.
[0002]
[Prior art]
As a conventional technology for monitoring unauthorized distribution of digital data on a network, for example, as described in Patent Document 1, when providing digital content, a digital content is provided with a transaction identifier for identifying the transaction as an electronic watermark. Insert, also generate transaction information including license definition information related to the use of the digital content, save this in association with the transaction identifier described above, and provide the digital watermark inserted digital content to the user, Further, the digital watermark is extracted from the digital content on the network, the stored transaction information is obtained using the transaction identifier in the digital watermark, and the license definition information obtained from the transaction information and the digital watermark are extracted. Digital content based on the content or existence form of the digital content Ceiling and there is a technique for determining whether or not unauthorized use.
[0003]
However, in this technique, as shown in detail in FIG. 1, the digital content provision management device 20 including the digital content provision means 21 and the digital content unauthorized use monitoring means 25 transmits the digital content to the user terminal 10. In response to a request via the network, this technology provides the user with the digital content into which the digital watermark has been inserted, and determines whether the digital content has been used illegally. The digital contents are limited to digital contents provided by the digital contents provision management device 20 itself (own site).
[0004]
Alternatively, as shown in FIG. 9, the digital content providing device 60, the digital content unauthorized use monitoring device 70, and the digital content license management device 80 are separately provided on a network, and the digital content unauthorized use monitoring device 70 The digital content license management device 80 accesses the digital content license management device 80, obtains information stored in the digital content license management device 80, and determines whether digital content is illegally used. Active communication with the management device 80 is required.
[0005]
[Patent Document 1]
JP 2000-20600 A
[0006]
[Problems to be solved by the invention]
The problem to be solved is that, with the conventional technology, the monitoring target for unauthorized use is limited to the digital content provided by the digital content provider, and that the distributed content is unauthorized. Discovery requires active communication with an information management center via a network, which is costly and time consuming.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional techniques and to enable efficient and low-cost and short-time discovery of illegal distribution of content.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a method in which a communication service provider or a content delivery service provider detects an unauthorized delivery of content in order to discover unauthorized delivery of content whose copying is prohibited in a communication network (network) such as the Internet. As detection data for enabling the discovery of, for example, a specific complicated bit array is created, exchanged based on a contract, and a content distribution company adds the detection data to the content to be distributed, and The content is distributed to the content recipient who has requested the provision of the content, and the communication carrier transmits the content including the detection data or the content including the detection data at a node (relay device) at a specific position of the communication network such as a relay router or a dedicated terminal. By detecting content that does not exist or that contains different detection data, The content distribution service provider other than the content distribution service provider or network of general user who created the Ntsu, characterized in that the discovery of the unauthorized delivery of the content.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
FIG. 1 is a block diagram showing a first configuration example of a data unauthorized distribution monitoring service system according to the present invention.
[0011]
In FIG. 1, 1 is a communication carrier terminal used by a communication carrier, 2 is a content distributor terminal used by a content distributor, 3 to 5 are relay devices such as routers, 6 is a content receiver terminal operated by a general user, Reference numeral 7 denotes the Internet, and 8 denotes a user terminal operated by a general user. In the drawing, a thick line of a bidirectional arrow indicates a physical line connecting each terminal and device, and a thin line in one direction indicates a flow of information.
[0012]
Each of the communication carrier terminal 1, the content distributor terminal 2, the relay devices 3 to 5, the content receiver terminal 6, and the user terminal 8 in FIG. 1 includes a CPU (Central Processing Unit), a main memory, a display device, an input device, It has a computer configuration consisting of an external storage device, and after installing programs and data recorded on a storage medium such as a CD-ROM via an optical disk drive or the like into the external storage device, reads the program or data from the external storage device into the main memory. The function of each processing unit is executed by processing by the CPU.
[0013]
For example, the carrier information terminal 1 has a watermark information generation processing unit 1a, the content distributor terminal 2 has an embedding processing unit 2a, the relay devices 3 to 5 have a discovery processing unit 3a to 5a, and the content receiver terminal 6 And the user terminal 8 are provided with content communication processing units 6a and 8a, respectively, and each processing unit performs a processing operation according to the present invention based on a program stored in the storage device.
[0014]
With such a configuration, the data unauthorized distribution monitoring service system of the present example provides an efficient monitoring service for illegal distribution of contents (digital data) such as text data, still images, and moving images transmitted and received on the Internet 7. .
[0015]
In particular, in the example of FIG. 1, the network operator generates detection data, notifies the relay terminal 3 to 5 from the communication operator terminal 1, and further notifies the content distributor who has officially contracted. On the content distributor side, the notified detection data is attached to the content (digital data) to be distributed by the content distributor terminal 2.
[0016]
That is, the telecommunications carrier terminal 1 is exchanged by the watermark information generation processing unit 1a with each of the relay devices 3 to 5 for relaying the distribution of the content based on the contract between the authorized distributor of the content and the network operator. The relay devices 3 to 5 store the detection data notified from the communication carrier terminal 1 in a storage device (not shown) by the discovery processing units 3 a to 5 a. Then, it is determined whether or not the detection data is attached to the content received from the content distributor terminal 6 to the user terminal 8, for example, received on the Internet 7, and based on the determination result, the unauthorized distribution of the content is detected. Notification of the detection result of the unauthorized distribution to the communication carrier terminal 1, the content distributor terminal 2, the content receiver terminal 6, etc. as predetermined destination devices That.
[0017]
If each of the relay devices 3 to 5 determines that the detection data is not attached to the content, the relay devices 3 to 5 may detect the unauthorized distribution of the content. In this case, the communication provider terminal 1 or the content distributor terminal 2 that has received the notification from the relay devices 3 to 5 that have detected the unauthorized distribution analyzes the header of the content and determines that the distribution of the content is performed by the authorized distributor ( It is determined whether the content is from the content distributor terminal 2) or whether it has been illegally redistributed from the distribution destination (the content receiver terminal 6) to the user terminal 8. For example, the content distributor terminal 2 removes the detection data from the content by the content communication processing unit 6a at the content receiver terminal 6 to which the embedded data is attached by the embedding processing unit 2a and reproduces the content. After that, it can be detected that the content is illegally redistributed to the user terminal 8.
[0018]
Alternatively, if each of the relay devices 3 to 5 determines that the detection data is attached to the content, the relay devices 3 to 5 may detect the content as unauthorized distribution. In this case as well, the header of the content is analyzed at the communication carrier terminal 1 or the content distributor terminal 2 that has received the notification from the relay devices 3 to 5 that have detected the unauthorized distribution, and the distribution of the content is determined to be a normal distribution. It is determined whether the content has been redistributed illegally from the distributor (the content distributor terminal 2) or from the distribution destination (the content receiver terminal 6) to the user terminal 8.
[0019]
By using an error correction code (CRC) assigned to the content to be distributed as the detection data, a hash function calculation value generated to prevent tampering of the content to be distributed and the expiration date of the content are specified. The hash function calculation value and the date information may be attached to each specific bit of the content using date information or the like.
[0020]
For example, in the case of time-division transfer or section-division transfer of the content, the content distributor terminal 2 places, on the Internet, content obtained by attaching detection data including date information for specifying the expiration date of the content for each division unit. The data is distributed, and each of the relay devices 3 to 5 determines the attachment of the detection data for each division unit.
[0021]
That is, the embedding processing unit 2 in the content distributor terminal 2 specifies a bit string specifying the date as detection data in the content, such as “content (specific number of bits) + detection data (specific number of bits)”. By including each bit, the expiration date is set in the content, and in each of the relay devices 3 to 5, the discovery processing units 3a to 5a detect the expired content as an unauthorized distribution target.
[0022]
In this case, a short bit string can be used as the detection data. When a short bit string is used as the detection data, the detection data only remains as slight noise in the content, and the content receiver terminal that has received the content from the content distributor terminal 2 formally 6, the content reproduction processing unit (not shown) reproduces the received content without removing the detection data, and the relay device 3 receives the detection data from the content distributor terminal 2. It detects that the content as it is has been transmitted to the user terminal 8, and determines unauthorized distribution.
[0023]
On the other hand, when a complicated and long bit string is used as the detection data, the detection data is randomly embedded in the content and attached to the content, and the content recipient who has received the content from the content distributor terminal 2 formally is received. In the terminal 6, the content reproduction processing unit (not shown) removes the detection data from the received content and reproduces the content, and the relay device 3 removes the detection data from the content distributor terminal 2 ( It detects that the content has been transmitted to the user terminal 8 (without the detection data attached) and determines unauthorized distribution.
[0024]
For example, in the content distributor terminal 2, the embedding processing unit 2 a randomly embeds detection data consisting of a long bit string such as “10000010001011110000100100001001110” in the content and attaches it to the content. If it is distributed, the relay devices 3 to 5 read the bit string flowing to the Internet 7 and search for “100000100010111100001001000010011110”, and if “100000100010111100001001000010011110” If a no example "Ichizerozerozerozerozeroichizerozerozero1011110000100100001001111""1" instead of the last bit is "0" as the data for fraud detection to the contents as not being attached, for detecting the unauthorized distribution.
[0025]
If the formal content contains a bit string of the same pattern as the detection data, removing the bit string of this pattern will not reproduce the content correctly.However, by using a long bit string as the detection data, Since the probability of being included in formal content is extremely low, the bit string of the pattern can be removed.
[0026]
The operation of detecting the unauthorized distribution of the content based on the detection data in the relay devices 3 to 5 is performed by the content distributor terminal 2 on the basis of an instruction from the authorized distributor of the content from the Web page or the command line or the dedicated By instructing the relay devices 3 to 5 as needed using setting tools such as an application, it is possible to change the valid or invalid setting and to set other additional services.
[0027]
Further, for example, the relay device 3 detects, in the discovery processing unit 3a, unauthorized distribution from the content receiver terminal 6 to the user terminal 8, and notifies the communication provider terminal 1 or the content distributor terminal 2 of the detection result. Then, the communication carrier terminal 1 notifies the relay device 3 by the watermark information generation processing unit 1a or the content distributor terminal 2 by the embedding processing unit 2a to stop the distribution of the content. Based on this notification, the relay device 3 stops distribution of the content to the user terminal 8 by the discovery processing unit 3a.
[0028]
Note that the content delivered in this example includes any of text data, a still image, a moving image, and audio.
[0029]
Hereinafter, the operation of the data unauthorized distribution monitoring service system of this example will be described based on the steps indicated by (a) to (g) in FIG.
[0030]
First, in the telecommunications carrier terminal 1, any specific bit is arranged in the content or at a specific position in the datagram, for example, at a constant interval bit within a range that does not affect the content. A specific complex bit array (detection data) that can be detected by the relay device 3 to 5 and can be created by the dedicated application of the content provider terminal 1 or the content distributor terminal 2 or the content receiver terminal 6, Notify and supply a specific position on the Internet 7 such as the relay device 4 located between the relay device 3 accommodating the distributor terminal 2 and the relay device 5 accommodating the content receiver terminal 6 (step (a)). ), And is also supplied to the content distributor terminal 2 by contract (step (b)).
[0031]
Then, the content distributor terminal 2 embeds a specific complicated bit array (detection data) in the content to be distributed to the content receiver terminal 6 and distributes it to the content receiver terminal 6. The content delivered from the receiver terminal 6 to the other user terminals 8 on the Internet 7 includes or includes a specific complicated bit array (detection data) notified and supplied from the carrier terminal 1. If no or different detection data is found (step (c)), a warning (step (d)) or prohibition (step (e)) of unauthorized content distribution is given to the distributor (the content receiver terminal 6), or Then, notification to the carrier terminal 1 (step (f)) and notification to the content distributor terminal 2 (step (g)) are performed.
[0032]
In the system shown in FIG. 1 described above, detection data is generated in the communication carrier terminal 1 and is notified and supplied to the relay devices 3 to 5 and the content distributor terminal 6. As shown, the data for detection is generated in the content distributor terminal 6, the content distributor terminal 6 notifies the communication carrier terminal 1, and the communication provider terminal 1 sends the detection data to each of the relay devices 3 to 5. May be notified and supplied.
[0033]
FIG. 2 is a block diagram showing a second configuration example of the unauthorized data distribution monitoring service system according to the present invention.
[0034]
In FIG. 2, reference numeral 21 denotes a communication carrier terminal used by a communication carrier; 22, a content distributor terminal used by a content distributor; 23 to 25, relay devices such as routers; 26, a content receiver terminal operated by a general user; 27 is the Internet, 28 is a user terminal operated by a general user.
[0035]
Each of the communication carrier terminal 21, the content distributor terminal 22, the relay devices 23 to 25, the content receiver terminal 26, and the user terminal 28 in FIG. 2 is also the communication carrier terminal 1, the content distributor terminal 2, and the relay device in FIG. 3-5, each of the content receiver terminal 6 and the user terminal 8 has a computer configuration including a CPU, a main memory, a display device, an input device, and an external storage device. The processing unit 22a and the embedding processing unit 22b, the relay devices 23 to 25 are provided with the discovery processing units 23a to 25a, and the content receiver terminal 26 and the user terminal 28 are respectively provided with the content communication processing units 26a and 28a. The processing unit performs a processing operation according to the present invention based on a program stored in the storage device.
[0036]
With such a configuration, even in the data unauthorized distribution monitoring service system of FIG. 2, an efficient monitoring service for illegal distribution of contents (digital data) such as text data, still images, and moving images transmitted and received on the Internet 27. I will provide a.
[0037]
However, in this example, in the content distributor terminal 22 of the legally contracted content distributor, the watermark information generation processing unit 22a generates the detection data, notifies the data to the communication carrier terminal 21, and supplies the data. The embedding processor 22b attaches the generated detection data to the content (digital data) to be distributed, and the carrier terminal 21 transmits the detection data notified and supplied from the content distributor terminal 22 to each of the relay devices 3. Notify ~ 5.
[0038]
In the system having such a configuration, similarly to the example of FIG. 1, each of the relay devices 23 to 25 does not illustrate the detection data notified from the communication carrier terminal 21 by the discovery processing units 23 a to 25 a. It is determined whether or not the detection data is attached to the content, for example, from the content distributor terminal 26 to the user terminal 28, which is stored in the storage device and received on the Internet 27. The distribution is detected, and the detection result of the illegal distribution is notified to the communication carrier terminal 21, the content distributor terminal 22, the content receiver terminal 26, etc. as the predetermined destination devices, and the above paragraphs “0017” to The operation described in each of “0028” is performed.
[0039]
Hereinafter, the operation of the data unauthorized distribution monitoring service system of the present example will be described based on the steps indicated by (a) to (g) in FIG.
[0040]
First, in the content distributor terminal 22, any specific bit is arranged in the content or at a specific position in the datagram, for example, at a constant interval bit within a range that does not affect the content. A special complicated bit array (detection data) that can be discovered by the relay devices 23 to 25 and can be created by the dedicated application of the terminal 21 or the content distributor terminal 22 or the content receiver terminal 26 and communicated The carrier terminal 21 is notified and supplied (step (a)), and the communication carrier terminal 21 operates between the relay device 23 accommodating the content distributor terminal 22 and the relay device 25 accommodating the content receiver terminal 26. At a specific position on the Internet 27 such as the relay device 24 or the like (step (b) ).
[0041]
Then, the content distributor terminal 22 embeds a specific complicated bit array (detection data) in the content to be distributed to the content receiver terminal 26 and distributes it to the content receiver terminal 26. The content delivered from the receiver terminal 26 to the other user terminal 28 on the Internet 27 includes or includes a specific complicated bit array (data for detection) notified and supplied from the carrier terminal 21. If no or different detection data is found (step (c)), a warning (step (d)) or prohibition (step (e)) of distribution of unauthorized content to the distributor (the content receiver terminal 26), or Notification to the carrier terminal 21 (step (f)) and notification to the content distributor terminal 22 (step (g)). Cormorant.
[0042]
In the system shown in FIGS. 1 and 2 described above, each of the relay devices 3 to 5 is configured to detect and notify the unauthorized distribution of the content. However, as shown in FIG. Alternatively, a configuration in which a dedicated terminal is provided may be used.
[0043]
FIG. 3 is a block diagram showing a third example of the configuration of the data unauthorized distribution monitoring service system according to the present invention.
[0044]
In FIG. 3, 31 is a communication carrier terminal used by a communication carrier, 32 is a content distributor terminal used by a content distributor, 33 to 35 are relay devices such as routers, 36 is a content receiver terminal operated by a general user, Reference numeral 37 denotes the Internet, 38 denotes a user terminal operated by a general user, and 39 denotes a dedicated terminal for detecting unauthorized distribution of contents, which is a feature of this embodiment.
[0045]
Each of the carrier terminal 31, the content distributor terminal 32, the relay devices 33 to 35, the content receiver terminal 36, the user terminal 38, and the dedicated terminal 39 in FIG. CPU, main memory, display device, input device, external device, etc., as in each of the content distributor terminals 2, 22, the relay devices 3-5, 23-25, the content receiver terminals 6, 26, and the user terminals 8, 28. It has a computer configuration consisting of a storage device. The carrier information terminal 31 has a watermark information generation processing unit 31a, the content distributor terminal 32 has an embedding processing unit 32a, and the content receiver terminal 36 and the user terminal 38 have The content communication processing units 36a and 38a are provided in the dedicated terminal 39, and the discovery processing unit 39a is provided in the dedicated terminal 39. Each processing unit is stored in a storage device. Based on the program, it performs a processing operation according to the present invention.
[0046]
With such a configuration, even in the data unauthorized distribution monitoring service system of FIG. 3, an efficient monitoring service of illegal distribution of contents (digital data) such as text data, still images, and moving images transmitted and received on the Internet 37. I will provide a.
[0047]
However, in this example, the network operator generates detection data and notifies the dedicated terminal 39 from the communication carrier terminal 31. In the dedicated terminal 39, unauthorized distribution of the content is performed based on the notified detection data. Is detected.
[0048]
That is, the telecommunications carrier terminal 31 uses the watermark information generation processing unit 31a to generate detection data consisting of a specific bit string transmitted and received based on a contract between the authorized distributor of the content and the network carrier, and The dedicated terminal 39 stores the detection data notified from the communication carrier terminal 31 in a storage device (not shown) by the discovery processing unit 39a, and stores the content transmitted and received by the relay device 35, for example. Capture, determine whether or not the detection data is attached to the content addressed to the user terminal 38 from the content distributor terminal 36, and detect unauthorized distribution of the content based on the determination result. Are determined in advance as communication partner terminals 31, content distributor terminals 32, and content receiver terminals 36. To notify. It should be noted that also in the system of this example, the operations and the like described in the respective paragraphs “0017” to “0028” described above with reference to FIG.
[0049]
Hereinafter, the operation of the unauthorized data distribution monitoring service system of this example will be described based on the steps indicated by (a) to (g) in FIG.
[0050]
The telecommunications carrier installs the telecommunications carrier's dedicated terminal 39 on the Internet 37, and uses the detection data created by the telecommunications carrier's terminal 31 (arbitrary specific bits at fixed interval bits of the content within a range that does not affect the content). The bits are arranged or arranged at a specific position in the datagram, and the addition or removal of the bits is notified to the dedicated terminal 39 by a dedicated application or a dedicated terminal 39 or a specific complicated bit arrangement that can be performed by the relay devices 33 to 35). The data is supplied and stored (step (a)), and the detection data is supplied to the content distributor terminal 32 (step (b)).
[0051]
In the content distributor terminal 32, the embedding processor 32a attaches the detection data supplied from the communication carrier terminal 31 to the content and distributes the content to the requesting content receiver terminal 36 or the like via the Internet 37.
[0052]
In the dedicated terminal 39, the content (digital data) distributed from the content receiver terminal 36 to another user terminal 38 on the Internet 37, for example, is captured by the discovery processing unit 39a. If a content containing or not containing or not including the notified detection data (a specific complicated bit array) or different (step (c)) is found, a warning to the content receiver terminal 36 of unauthorized content distribution (step (c)) (D)) or prohibition of content distribution in the relay device 35 via the carrier terminal 31 (step (e)), or notification to the carrier terminal 31 (step (f)), the content distributor The terminal 32 is notified (step (g)).
[0053]
As described above with reference to FIGS. 1 to 3, in the data unauthorized distribution monitoring service system of the present example, the relay device 3 to 5, 23 to 25 or the dedicated terminal 3 of the communication carrier notifies By detecting that the detected and stored detection data (specific complex bit array) is included or not included in the content distributed on the Internet 7, 27, 37, the content is detected. It is possible to discover, warn or prohibit illegal distribution of content from a content distributor other than the distributor terminals 2, 22, 32, the content receiver terminals 6, 26, 36, or the content distributors other than the content distributor terminals 2, 22, 32. it can. Thus, in this example, active communication with a center having a content distribution function is not required to discover that the distributed content is unauthorized.
[0054]
It should be noted that the present invention is not limited to the example described with reference to FIGS. 1 to 3 and can be variously modified without departing from the gist thereof. For example, in the example of FIG. 3, the detection data created by the communication carrier terminal 31 is notified to and stored in the dedicated terminal 39. However, as shown in the example of FIG. A configuration in which the data is generated by the terminal 32 may be used.
[0055]
In the present embodiment, the Internet has been described as an example of a communication network (network). However, the present invention can be applied to monitoring of illegal distribution of digital data in a network such as an STM network and an ATM network. For example, in an STM such as SONET (Synchronous Optical Network) or SDH (Synchronous Digital Hierarchy), a line ID is searched from a frame position to determine whether or not the distribution of the content (digital data) is from an authorized distributor. You can judge.
[0056]
Further, in this example, the content distributor terminals 2, 22, and 32 perform ancillary processing of unauthorized data for the content. For example, the relay devices 3, 23, and 33 use the content distributor terminals 2, 22, and 32, respectively. A configuration for performing ancillary data appending processing on content generated and distributed to the Internet 7, 27, 37, and detecting, in the relay devices 5, 25, and 35, unauthorized distribution based on the presence or absence of the unauthorized data for the content. It is also possible.
[0057]
The relay devices 3, 23, and 33 perform ancillary processing of unauthorized data on the content generated by the content distributor terminals 2, 22, and 32 and distributed to the Internet 7, 27, and 37. At 34, the unauthorized data attached to the content is removed. When the relay device 5, 25, 35 attaches the unauthorized data to the content to be relayed, the unauthorized distribution of the content is performed. Can also be detected. As a result, it is possible to detect illegal use of the content permitted to be distributed in the closed area of the network outside the area.
[0058]
Further, the computer may be configured without a keyboard or an optical disk drive. In this example, the optical disk is used as the recording medium, but an FD (Flexible Disk) or the like may be used as the recording medium. As for the installation of the program, the program may be downloaded and installed via a network via a communication device.
[0059]
【The invention's effect】
According to the present invention, the monitoring of unauthorized use is limited to the digital content provided by the digital content provider as in the prior art, and the discovery that the distributed content is unauthorized In addition, it is not necessary to perform active communication with the information management center via the network, and it is possible to efficiently detect the illegal distribution of the content at a low cost and in a short time.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a first configuration example of a data unauthorized distribution monitoring service system according to the present invention.
FIG. 2 is a block diagram showing a second configuration example of the unauthorized data distribution monitoring service system according to the present invention;
FIG. 3 is a block diagram showing a third configuration example of the unauthorized data distribution monitoring service system according to the present invention;
[Explanation of symbols]
1, 21, 31: telecommunications carrier terminal, 2, 22, 32: content distributor terminal, 3 to 5, 23 to 25, 33 to 35: relay device, 6, 26, 36: content receiver terminal, 7, 27, 37: Internet, 8, 28, 38: user terminal, 39: dedicated terminal, 1a, 22a, 31a: watermark information generation processing unit, 2a, 22b, 32a: embedding processing unit, 6a, 8a, 26a, 28a, 36a, 38a: content communication processing unit, 3a to 5a, 23a to 25a, 39a: discovery processing unit.

Claims (20)

A system for providing a monitoring service for unauthorized distribution of digital data transmitted and received on a network,
Providing means for notifying the relay device for relaying the distribution of the digital data of detection data composed of a specific bit string transmitted and received based on a contract between an authorized distributor of the digital data and a network operator,
In the relay device, means for storing the notified detection data in a storage device, and determination means for determining whether or not the received digital data is accompanied by the detection data stored in the storage device, Detecting means for detecting unauthorized distribution of the digital data based on a result of the accompanying determination of the detection data by the determining means; and notifying means for notifying a predetermined destination device of the detection result of the unauthorized distribution by the detecting means. An unauthorized data distribution monitoring service system comprising: A system for providing a monitoring service for unauthorized distribution of digital data transmitted and received on a network,
It consists of a specific bit string exchanged between a legitimate distributor of the digital data and a network operator based on a contract with a dedicated device for capturing the digital data transmitted and received by the relay device for relaying the digital data. A means for notifying detection data is provided,
In the dedicated device, means for storing the notified detection data in a storage device, and determination means for determining whether the captured digital data is accompanied by the detection data stored in the storage device, Detecting means for detecting unauthorized distribution of the digital data based on a result of the accompanying determination of the detection data by the determining means; and notifying means for notifying a predetermined destination device of the detection result of the unauthorized distribution by the detecting means. An unauthorized data distribution monitoring service system comprising: An unauthorized data distribution monitoring service system according to any one of claims 1 and 2,
The unauthorized data distribution monitoring service system, wherein the detecting means detects unauthorized distribution of the digital data if the determining means determines that the detection data is not attached to the digital data. An unauthorized data distribution monitoring service system according to any one of claims 1 and 2,
The unauthorized data distribution monitoring service system, wherein the detecting means detects an unauthorized distribution of the digital data when the determining means determines that the detection data is attached to the digital data. An unauthorized data distribution monitoring service system according to any one of claims 1 to 4, wherein
An unauthorized data distribution monitoring service system, wherein the network operator generates the detection data and notifies the relay device. An unauthorized data distribution monitoring service system according to any one of claims 1 to 4, wherein
The network operator generates the detection data and notifies the relay device and the authorized distributor,
An unauthorized data distribution monitoring service system, characterized in that the legitimate distributor attaches the detection data to digital data to be distributed. An unauthorized data distribution monitoring service system according to any one of claims 1 to 4, wherein
Data unauthorized distribution monitoring wherein the authorized distributor generates the detection data and notifies the network operator, and the authorized distributor attaches the detection data to digital data to be distributed. Service system. The data unauthorized distribution monitoring service system according to any one of claims 1 to 7, wherein:
An unauthorized data distribution monitoring service system, wherein an error correction code added to digital data to be distributed is used as the detection data. The data unauthorized distribution monitoring service system according to any one of claims 1 to 7, wherein:
An unauthorized data distribution monitoring service system, characterized in that a hash function calculation value of digital data to be distributed is used as the detection data, and the hash function calculation value is attached to each specific bit of the digital data. The data unauthorized distribution monitoring service system according to any one of claims 1 to 7, wherein:
An unauthorized data distribution monitoring service system, wherein the detection data is randomly arranged in the digital data. The data unauthorized distribution monitoring service system according to any one of claims 1 to 9, wherein
Means for time-division transfer or section-division transfer of the digital data,
The data illegitimate distribution monitoring service system, wherein the determination means determines an attachment of the detection data for each division unit. An unauthorized data distribution monitoring service system according to any one of claims 1 to 11,
Means for setting the expiration date to the digital data by including a bit string specifying a date in the detection data,
The detection means detects a digital data whose expiration date has expired as an illegal distribution target, and is a data illegal distribution monitoring service system. The data unauthorized distribution monitoring service system according to any one of claims 1 to 12, wherein:
An unauthorized data distribution monitoring service comprising means for enabling or disabling an operation for detecting unauthorized distribution of digital data based on the detection data by the relay device based on an instruction from an authorized distributor of the digital data. system. The data unauthorized distribution monitoring service system according to any one of claims 1 to 13, wherein:
An unauthorized data distribution monitoring service system comprising means for stopping distribution of the digital data by the relay device in response to notification of the unauthorized distribution result by the notifying means. An unauthorized data distribution monitoring service system according to any one of claims 1 to 14, wherein:
An illegal data distribution monitoring service system, wherein the destination terminal of the digital data has means for removing and reproducing the detection data from the digital data. An unauthorized data distribution monitoring service system according to any one of claims 1 to 14, wherein:
An unauthorized data distribution monitoring service system, wherein the digital data distribution destination terminal has means for reproducing the digital data without removing the detection data. 17. A data fraudulent delivery monitoring service system according to any one of claims 1 to 16, wherein
The unauthorized data distribution monitoring service system according to claim 1, wherein the network comprises one of an STM network, an ATM network, and the Internet. The data unauthorized distribution monitoring service system according to any one of claims 1 to 17,
The unauthorized data distribution monitoring service system, wherein the digital data includes any of text data, a still image, and a moving image. A program for causing a computer to function as each unit according to any one of claims 1 to 18. A data fraud monitoring service method for a system for providing a fraud monitoring service for digital data transmitted and received on a network,
For a relay device that relays the distribution of the digital data, or a dedicated device that captures the digital data transmitted and received by the relay device, an authorized distributor of the digital data and a network operator based on a contract. A procedure for notifying detection data composed of a specific bit string transmitted and received;
In the relay device or the dedicated device, a procedure for storing the notified detection data in a storage device, and a procedure for determining whether or not the received digital data is accompanied by the detection data stored in the storage device. A procedure for detecting unauthorized distribution of the digital data based on a result of the accompanying determination of the detection data according to the procedure, and a procedure for notifying a predetermined destination device of the detection result of the unauthorized distribution according to the procedure. An unauthorized data distribution monitoring service method, characterized in that:

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