JP2010044642A - Content distribution server and content distribution method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To limit use of a content for every user, using information obtained from a mobile terminal such as time information and positional information. <P>SOLUTION: This content distribution server 100 sets distribution limitation in advance, for usable user information, area information, time information, a prohibited keyword and a prohibited image, in every content data recorded in a database 120 (step S11), acquires a transmission request of the content data transmitted from a cellular phone 10 of the user, current time information, current positional information and mobile terminal information (step S12), reads out therein the distributable content data from the database 120, based on the pieces of information and the distribution limitation setting, and alters a data about the prohibited keyword and the prohibited image (step S13), and further transmits the altered content to the transmission-requesting cellular phone 10 (step S15). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a content distribution server and a content distribution method, and more particularly to a content distribution server and a content distribution method for restricting the use of content for each user based on time information and position information.

  When restricting content browsing on a terminal device, it is common to confirm the identity with a user ID and password and determine whether or not browsing is possible in light of preset user authority. On the other hand, there are cases where it is desired to restrict the use of only part of the content.

Patent Document 1 describes an image processing apparatus including a concealing unit that conceals an area designated by concealment area designation. According to this device, while restricting the use, not only can the area containing the restricted information be concealed but can be copied, etc., the area to be concealed can be changed based on the related information. can do.
JP 2007-166341 A

  However, the technique of Patent Document 1 has a problem that it can only restrict image data and cannot restrict document data. There is also a problem that detailed settings for a specific user cannot be made.

  The present invention has been made in view of such circumstances, and by using information obtained from a portable terminal such as time information and position information, the use of content for each user is restricted, thereby improving security and convenience. An object is to provide a content distribution server and a content distribution method.

  In order to achieve the object, the content distribution server according to claim 1 is a distribution restriction set by the user for each content data in the content distribution server that distributes the content data recorded in the database to the mobile terminal, A recording unit that records in a database a distribution restriction made up of at least distributable user information and position information, in association with the content data, an acquisition unit that acquires user information and current position information of a mobile terminal that distributes the content, Based on the distribution restriction recorded in association with the acquired information, determination means for determining whether or not distribution to the portable terminal is possible for each content data, and the content data determined to be distributed by the determination means And a distribution means for distributing to a portable terminal.

  According to this, on the basis of the distribution restriction composed of user information that can be distributed and position information set by the user, and the user information and current position information of the portable terminal that distributes content, the content data is sent to the portable terminal. Since the content data determined to be distributed by the determining means is distributed to the mobile terminal, the content data corresponding to the current position of the user can be distributed for each user. It is possible to improve security and convenience.

  The content distribution server according to claim 1, wherein the distribution restriction includes time information that can be distributed, and the determination unit is based on the distribution restriction and a time at which the distribution unit distributes the content. Then, it is determined whether or not each content data can be distributed to the portable terminal.

  Accordingly, content data corresponding to the time can be distributed for each user, and security and convenience can be improved.

  According to a third aspect of the present invention, in the content distribution server according to the first or second aspect, the distribution unit distributes the content data designated by the portable terminal to the portable terminal.

  As a result, only content data desired by the user can be distributed, and unnecessary communication due to unnecessary content data distribution can be eliminated.

  4. The content distribution server according to claim 1, wherein the distribution restriction includes a prohibited keyword or / and a prohibited image that prohibits use in the content, and the prohibited keyword or / And modification means for modifying the content data based on the prohibited image.

  As a result, content data can be modified for each user based on a prohibited keyword or prohibited image that is prohibited from being used in the content, and security and convenience can be improved.

  5. The content distribution server according to claim 4, wherein when the content data is document data or image data, the modification means includes the prohibited keyword or prohibition existing in the document data or image data. The image is replaced with a different keyword or image.

  Accordingly, when the content data is document data or image data, the content data can be distributed without causing the user to recognize the prohibited keyword or the prohibited image.

  6. The content distribution server according to claim 4, wherein when the content data is document data or image data, the modification means includes the prohibited keyword or prohibition existing in the document data or image data. The image is concealed so that it cannot be viewed.

  Accordingly, when the content data is document data or image data, the content data can be distributed without causing the user to recognize the prohibited keyword or the prohibited image.

  According to a seventh aspect of the present invention, in the content delivery server according to the fourth aspect, when the content data is moving image data or audio data, the modifying unit separates the prohibited keyword existing in the moving image data or audio data. It is characterized by being replaced with the keyword.

  Accordingly, when the content data is moving image data or audio data, the content data can be distributed without causing the user to recognize the prohibited keyword.

  The content distribution server according to claim 4, wherein when the content data is moving image data or audio data, the modification means listens to the prohibited keyword existing in the moving image data or audio data. It is characterized by hiding it impossible.

  Accordingly, when the content data is moving image data or audio data, the content data can be distributed without causing the user to recognize the prohibited keyword.

  In order to achieve the above object, the content distribution method according to claim 9 is a content distribution method for distributing content data recorded in a database to a mobile terminal, and is a distribution restriction set by the user for each content data, A recording step of recording at least a distribution restriction including user information and position information that can be distributed in the database in association with the content data; an acquisition step of acquiring user information and current position information of a mobile terminal that distributes the content; Based on the distribution restriction recorded in association with the acquired information, a determination step for determining whether or not distribution to the portable terminal is possible for each content data, and the content data determined to be distributed by the determination step And a distribution step of distributing to a portable terminal.

  According to this, on the basis of the distribution restriction composed of user information that can be distributed and position information set by the user, and the user information and current position information of the portable terminal that distributes content, the content data is sent to the portable terminal. Since the content data determined to be distributed by the determining means is distributed to the mobile terminal, the content data corresponding to the current position of the user can be distributed for each user. It is possible to improve security and convenience.

  According to the present invention, the mobile terminal is configured for each piece of content data based on a distribution restriction composed of user information that can be distributed and position information set by the user, and user information and current position information of the mobile terminal that distributes the content. Since the content data determined to be distributed by the determination means is distributed to the mobile terminal, the content data corresponding to the current position of the user is distributed for each user. Security and convenience can be improved.

  The best mode for carrying out the present invention will be described below.

  FIG. 1 is a diagram showing an example of a configuration of a content distribution system 1 according to the present invention. As shown in the figure, the content distribution system 1 includes a mobile phone 10, a content distribution server 100, a database 120, the Internet 200, an exchange network 201, and the like.

  The Internet 200 is a communication network through which data and the like are transmitted according to a predetermined protocol.

  Each mobile phone 10 is assigned a unique terminal ID, and has a function of connecting to the Internet 200 in addition to a normal call function. Further, it is possible to receive GPS signals from a plurality of GPS satellites by a GPS antenna (not shown) and specify the current position of the mobile phone 10.

  The content distribution server 100 is connected to the Internet 200 via the exchange network 201. The switching network 201 is a network system such as an in-house system, for example, and the mobile phone 10 and the content distribution server 100 can transmit and receive data via the Internet 200 using a predetermined protocol.

  FIG. 2 is a block diagram showing an electrical configuration of the content distribution server 100. As shown in the figure, the content distribution server 100 includes a central processing unit 101, a memory 102, an operation control unit 103, a keyboard 104, a display control unit 105, a display 106, a bus 107, a network interface 108, a storage control unit 109, and The storage 110 is configured. The central processing unit 101, the memory 102, the operation control unit 103, the display control unit 105, the network interface 108, and the storage control unit 109 are configured to transmit and receive information to and from each other via the bus 107.

  The central processing unit 101 reads out the control program recorded in the storage 110 via the storage control unit 109 and loads it into the memory 102. The control program loaded in the memory 102 is executed, and overall control of each part of the content distribution server 100 is performed.

  Information input from the keyboard 104 is input to the central processing unit 101 via the operation control unit 103, and the central processing unit 101 executes an operation based on the input information. In the case of an operation involving display, display is performed on the display 106 via the display control unit 105.

  The network interface 108 communicates with the Internet 200 and the database 120 using a predetermined protocol.

  Note that the content distribution server 100 and the database 120 may be connected using IDE, USB, or the like instead of being connected via a network.

  The database 120 is composed of a large-capacity storage device such as a hard disk device, and various contents such as document data, audio data, image data, and video data used by the mobile phone 10, user information, and various distribution restrictions described later. Conditions etc. are recorded. The user information is information on a user who has access authority to the content distribution server 100. The distribution restriction condition is a condition for restricting the use of the content set for each distributed user when each content is distributed to the user, and includes regional information, time information, prohibited keyword information, and prohibited images. There is information. These distribution restriction conditions are classified in advance, and each is assigned an ID.

  FIG. 3 is an example of user information recorded in the database 120. As information of each user, a user ID, a user name, and a terminal ID of the mobile phone 10 are recorded.

  FIG. 4 is an example of area information recorded in the database 120. As the area information, an area range using an area ID, an area name, and a latitude / longitude is recorded. You may record establishment ID, establishment name, and site range of establishment for every establishment of a company to which a user belongs. The content set by selecting one of the area IDs in the area information can be used only in the area range corresponding to the area ID.

  FIG. 5 is an example of time information recorded in the database 120. For each time zone, a time ID, a time zone, and a time limit are recorded. The content set by selecting any one of the time IDs in the time information can be used only in the time zone and the time limit corresponding to the time ID.

  FIG. 6 is an example of content information recorded in the database 120. The ID of each content and the path information where the content data file exists are recorded.

  FIG. 7 is an example of prohibited keyword information recorded in the database 120. The ID of each prohibited keyword and the keyword are recorded. The content set by selecting any of the prohibited keywords from the prohibited keyword information is modified so that the set prohibited keywords are not recognized and distributed to the user.

  FIG. 8 is an example of prohibited image information recorded in the database 120. The ID of each prohibited image and the path information where the prohibited image file exists are recorded. The content set by selecting any prohibited image from the prohibited image information is modified so that the set prohibited image is not recognized and distributed to the user.

  Next, the operation of the content distribution system 1 will be described with reference to FIG.

  The user sets distribution restrictions in advance for the content data recorded in the database 120 (step S11). For example, a browseable user ID, area ID, time ID, prohibited keyword, and prohibited image are set. FIG. 10 is a diagram illustrating an example of distribution restrictions set in content data.

  In the example illustrated in FIG. 10, the user with user ID = 1 can use the content data with content ID = 1 because the region ID = ALL. Further, since time ID = ALL, it can be used in all time zones. Furthermore, neither prohibited keywords nor prohibited images are set.

  On the other hand, the user with the user ID = 2 has the area ID = 1, the time ID = 1, 2, the prohibited keyword ID = 5, 10 and the prohibited image ID = 6 for the content data with the content ID = 1. Therefore, the distribution of the content data with content ID = 1 to the user with user ID = 2 is limited only to the region with region ID = 1, the time zone with time ID = 1, 2 and the time limit. Further, the prohibited keyword ID = 5, 10 prohibited keyword and the prohibited image ID = 6 prohibited image are provided so as to be unrecognizable. Similarly, for the user with the user ID = 3, the content data with the content ID = 1 can be distributed only in the time zone with the time ID = 1 in the region with the region ID = 1. In addition, the prohibited keyword with the prohibited keyword ID = 5 is changed to be unrecognizable and distributed.

  The content data with content ID = 2 can be distributed only to users with user IDs = 1, 3, and 5. For users with user ID = 1, 5 and region and time zone restrictions, and Prohibited keywords and prohibited images are set.

  In this way, distribution restrictions are set in advance for each content data. FIG. 11 shows the distribution restriction settings set in this way, classified by region. For example, in the area with area ID = 1, the user with user ID = 32, 51, 57 can use the content data with content ID = 52, 62, 77, 154 in the time zone with time ID = 2. . At this time, prohibited keywords with prohibited keyword ID = 2 and 6 and prohibited images with prohibited image ID = 3 are set.

  A user who desires content distribution makes a content transmission request to the content distribution server 100 using the mobile phone 10 (step S1). At this time, the mobile phone 10 transmits the current time information, the current position information obtained from the GPS, and the mobile terminal ID assigned in advance to the content distribution server 100 together with the content transmission request signal. The content distribution server 100 receives the content transmission request, the current time information, the current position information, and the mobile terminal ID transmitted from the mobile phone 10 (step S12). FIG. 12 is a diagram illustrating an example of information transmitted from the mobile phone 10 to the content distribution server 100.

  In this embodiment, the mobile terminal ID assigned to the mobile phone 10 is used to identify the user. However, instead of the mobile terminal ID, user registration consisting of voice data, image data, a user ID and a password is performed. The user may be identified using information or the like. Further, the time information of the content transmission request may be acquired from a clock built in the content distribution server 100 instead of being transmitted from the mobile phone 10.

  Next, the content distribution server 100 reads out the content data from the database 120 based on the preset content distribution restriction setting and modifies it (step S13). For example, when the user with the user ID = 32 requests the content transmission in the time zone with the time ID = 2 in the region with the region ID = 1, the content ID = 52, 62, 77, 154 as shown in FIG. Are read from the database 120. Further, the prohibited keywords with prohibited keyword ID = 2, 6 and the prohibited image with prohibited image ID = 3 are extracted from the read content data, and are replaced with different keywords or images, or hidden so that they cannot be viewed or heard. Forbidden keywords and prohibited images are detected using existing text search, speech recognition, and similar image search algorithms.

  FIG. 13A1 shows the document data with content ID = 52. Here, if the prohibited keyword with the prohibited keyword ID = 2 is “XX company”, the central processing unit 101 of the content distribution server 100 extracts the characters “XX company” from the document data with the content ID = 52. And replace with other characters, or black to make it unviewable. Further, the prohibited keyword area may not be displayed.

  FIG. 13A2 shows document data obtained by replacing the prohibited keyword “XX company” with “XX company” different from the prohibited keyword, and FIG. 13A3 shows the prohibited keyword “XXX”. Document data that has been modified by blacking out “Company” is displayed. The same processing may be performed for the prohibited keyword included in the image data content.

  FIG. 13B1 shows audio data with content ID = 62. The voice data includes “XX company” with the prohibited keyword ID = 2, and the central processing unit 101 extracts the part of “XX company” from the voice data with the content ID = 62. Replace with words, or put other sounds on the top to make them inaudible, or erase them to silence them. FIG. 13 (b2) shows the voice data modified by replacing the prohibited keyword “XX company” with “xx company” different from the prohibited keyword, and FIG. 13 (b3) shows the prohibited keyword “XX”. It shows the audio data modified by deleting “Company” unintelligible. The prohibited keyword included in the audio portion of the moving image data content may be modified by performing the same process.

  Further, FIG. 13C1 shows document data with content ID = 77. This document data includes a prohibited image with a prohibited image ID = 3, and the central processing unit 101 extracts this prohibited image from the document data with a content ID = 77 and replaces it with another image or cannot view it. Paint as black as possible. Further, the prohibited image area may not be displayed.

  FIG. 13C2 shows document data obtained by replacing the prohibited image with the prohibited image ID = 3 with another image, and FIG. 13C3 shows that the prohibited image with the prohibited image ID = 3 cannot be viewed. The document data is shown in black and modified as possible. Even if the image in the document data is different from the size of the prohibited image recorded in the database 120, it is prohibited if the image becomes the same image as the prohibited image by reduction / enlargement. It is determined as an image. In addition, when the content of the image data includes a portion that is recognized to be substantially the same as the prohibited image, it may be modified by performing the same process.

  When the reading and modification of the content data are completed, it is determined whether or not distribution is possible (step S14). If there is no content data that can be distributed, an error message is transmitted to the mobile phone 10 (step S16). If there is content data that can be distributed, the modified content is transmitted to the mobile phone 10. When a user with user ID = 32 makes a content transmission request in a time zone with time ID = 2 in a region with region ID = 1, content data modification data with content ID = 52, 62, 77, 154 is transmitted. . Instead of transmitting all the transmittable modified data, desired content data may be selected from the mobile phone 10 and only the modified data of the selected content data may be transmitted.

  The mobile phone 10 receives the modified content or the error message transmitted from the content distribution server 100 (step S2), and displays these on the display unit so that they can be browsed or outputs them on the audio output unit so that they can be heard (step S3). ).

  For example, if a part of the content requested by the user includes a part that cannot be used by the user, there is a security problem if the content is distributed as it is. If content is not distributed, it will be inconvenient. Therefore, as in the present invention, for a user who has made a content transmission request, the user's acquirable content data is read, the content data is modified for the prohibited keywords and prohibited images set for the user, and then the user It is possible to improve security and convenience by distributing to the network. In addition, even for the same content data, forbidden keywords and prohibited images can be set for each user, so that each user can use content modified to the minimum.

  The modified content data is stored in the database 120. When the same restriction is necessary again, the modified content data is read from the database 120 and reused, whereby the waiting time of the user can be shortened.

FIG. 1 is a diagram showing an example of a configuration of a content distribution system 1 according to the present invention. FIG. 2 is a flowchart showing the operation of the content distribution system 1. FIG. 3 is an example of user information recorded in the database 120. FIG. 4 is an example of area information recorded in the database 120. FIG. 5 is an example of time designation information recorded in the database 120. FIG. 6 is an example of content information recorded in the database 120. FIG. 7 is an example of prohibited keyword information recorded in the database 120. FIG. 8 is an example of prohibited image information recorded in the database 120. FIG. 9 is a block diagram showing an electrical configuration of the content distribution server 100. FIG. 10 is a diagram illustrating an example of distribution restrictions set in content data. FIG. 11 shows the distribution restrictions set for the contents classified by region. FIG. 12 is a diagram illustrating an example of information transmitted from the mobile phone 10 to the content distribution server 100. FIG. 13 is a diagram showing original data and modified data of each document data.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Content delivery system, 10 ... Mobile phone, 100 ... Content delivery server, 101 ... Central processing unit, 102 ... Memory, 103 ... Operation control part, 104 ... Keyboard, 107 ... Bus, 108 ... Network interface, 120 ... Database, 200 ... Internet

Claims (9)

In a content distribution server that distributes content data recorded in a database to a mobile terminal,
A recording unit configured to record in a database a distribution restriction set by the user for each content data, the distribution restriction including at least distributable user information and position information, in association with the content data;
An acquisition means for acquiring user information and current position information of a mobile terminal that distributes content;
Determination means for determining whether or not distribution to the mobile terminal is possible for each content data based on the distribution restriction recorded in association with the acquired information;
Distribution means for distributing content data determined to be distributed by the determination means to the mobile terminal;
A content distribution server comprising: The delivery restriction includes time information that can be delivered,
The content distribution according to claim 1, wherein the determination unit determines whether or not distribution of content data to the mobile terminal is possible based on the distribution restriction and a time at which the distribution unit distributes the content. server.   The content distribution server according to claim 1, wherein the distribution unit distributes content data designated by the mobile terminal to the mobile terminal. The distribution restriction includes a prohibited keyword or / and a prohibited image that prohibits use in the content,
The content distribution server according to any one of claims 1 to 3, further comprising modification means for modifying content data based on the prohibited keyword or / and prohibited image.   5. The modification means, when the content data is document data or image data, replaces the prohibited keyword or prohibited image existing in the document data or image data with a different keyword or image. Content distribution server described in 1.   The said modification means hides the said prohibition keyword or prohibition image which exists in the said document data or image data so that browsing is impossible when content data is document data or image data. Content distribution server.   5. The content distribution according to claim 4, wherein, when the content data is moving image data or audio data, the modifying unit replaces the prohibited keyword existing in the moving image data or audio data with another keyword. server.   5. The content distribution according to claim 4, wherein, when the content data is moving image data or audio data, the modification unit conceals the prohibited keyword existing in the moving image data or audio data so as not to be heard. server. In a content distribution method for distributing content data recorded in a database to a mobile terminal,
A recording step that is a distribution restriction set by the user for each piece of content data, and records in a database a distribution restriction consisting of at least distributable user information and position information in association with the content data;
An acquisition step of acquiring user information and current position information of a mobile terminal that distributes content;
A determination step of determining whether distribution to the mobile terminal is possible for each content data based on the distribution restriction recorded in association with the acquired information;
A distribution step of distributing the content data determined to be distributed by the determination step to the mobile terminal;
A content distribution method characterized by comprising:

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