JP2014096625A - Content management system, content management server, and content management program - Google Patents

Abstract

Content output is controlled according to the security status of an area.
A content management system is a content management system including a display device to which a communication terminal that transmits and receives position information of the communication terminal is attached, and a content management server that controls output of content to be output to the display device. The display device includes content acquisition request means for requesting the content management server to acquire specific content, and the content management server receives the content acquisition request from the display device. Position information acquisition means for acquiring the position information of the communication terminal, and output permission determination means for determining whether the content can be output based on an area corresponding to the acquired position information.
[Selection] Figure 15

Description

  The present invention relates to a content management system, a content management server, and a content management program.

  In recent years, video output terminals such as small portable projectors and displays have become widespread. Therefore, the user can easily carry the video output terminal and use it by selecting a place. That is, the video output terminal can be used even in a place where there are a large number of unspecified persons who are concerned about information leakage to the outside.

  Therefore, Patent Document 1 compares the security level (ESL) information of the area corresponding to the current position where digital content is output and the content security level (CSL) information related to the digital content to be output. A technique related to an output control device (projector, printer, etc.) for controlling the output from the output means of the digital content to be output based on the result is disclosed. Specifically, in the case of outputting digital content in a certain area, if the CSL digital content is equal to or lower than the ESL of the area, the content is output, and if the digital content is higher than the ESL, Output. Further, the ESL information is transmitted from an ESL transmission device installed for each area.

  However, the technique described in Patent Document 1 requires an ESL transmission device that transmits ESL information for each area. Therefore, when ESL is set in a plurality of areas, there is a problem that apparatus cost and installation cost increase. Further, for example, when changing the layout in a company, it may be necessary to additionally install an ESL transmission device for each area or reset ESL information. Furthermore, since it is necessary to set the ESL transmission apparatus so that signals generated by the ESL transmission apparatus do not interfere with each other, there is a problem in that management is troublesome.

  Therefore, the present invention has been made in view of the above points, and an object thereof is to control the output of content in accordance with the security status of an area.

  Therefore, in order to solve the above problem, the content management system includes a display device to which a communication terminal that transmits and receives positional information of the communication terminal is attached, and a content management server that performs output control of content to be output to the display device. In the content management system, the display device includes content acquisition request means for requesting the content management server to acquire specific content, and the content management server requests the content acquisition from the display device. Is received, position information acquisition means for acquiring the position information of the communication terminal, and output permission determination means for determining whether the content can be output based on an area corresponding to the acquired position information.

  According to the embodiment of the present invention, output of content can be controlled according to the security status of the area.

It is a figure which shows an example of a structure of the content management system in embodiment of this invention. It is a figure for demonstrating an example of the process outline | summary of the output permission determination of the content in embodiment of this invention. It is a figure which shows an example of the hardware constitutions of the communication terminal in embodiment of this invention. It is a conceptual diagram which shows an example of the format of the data of the positional information in embodiment of this invention. It is a conceptual diagram which shows an example of the data structure of the data containing the positional information in embodiment of this invention. It is a figure which shows an example of the hardware block diagram of the delivery apparatus in embodiment of this invention. It is a conceptual diagram which shows an example of the positional information which the delivery apparatus in embodiment of this invention delivers. It is a figure which shows an example of the hardware constitutions of the gateway apparatus in embodiment of this invention. It is a figure which shows an example of the hardware constitutions of the positional infomation management server in embodiment of this invention. It is a figure which shows an example of the hardware constitutions of the content management server in embodiment of this invention. It is a figure which shows an example of the hardware constitutions of the display apparatus in embodiment of this invention. It is a figure which shows an example of the function structure of the delivery apparatus and communication terminal in embodiment of this invention. It is a figure which shows an example of a function structure of the gateway apparatus and location information management server in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the positional infomation storage part of the positional infomation management server in embodiment of this invention. It is a figure which shows an example of a function structure of the content management server and display apparatus in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the content information storage part of the content management server in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the area information storage part of the content management server in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the display apparatus management information storage part of the content management server in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the content data storage part of the content management server in embodiment of this invention. It is an example of the sequence diagram which shows the operation | movement procedure in which the content management system in embodiment of this invention manages the positional information on a communication terminal. It is an example of the sequence diagram which shows the operation | movement procedure of the content output permission judgment of the content management system in embodiment of this invention. It is a figure which shows an example of the message displayed on a display apparatus when the determination result in embodiment of this invention cannot output. It is a flowchart figure which shows an example of the process sequence of the output permission determination of the content management server in embodiment of this invention. FIG. 10 is a diagram illustrating an example of functional configurations of a content management server and a display device according to a first modification of the embodiment of the present invention. FIG. 10 is an example of a sequence diagram illustrating an operation procedure for determining whether or not content output is possible in the content management system according to the first modification of the embodiment of the present invention. It is an example of the sequence diagram which shows the operation | movement procedure of the content output permission judgment of the content management system in the 2nd modification of embodiment of this invention. It is a figure which shows an example of the content security level designation | designated screen in the 2nd modification of embodiment of this invention.

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

[System configuration]
FIG. 1 is a diagram showing an example of a system configuration of a content management system 1 according to an embodiment of the present invention. As shown in FIG. 1, the content management system 1 includes communication terminals 5a,..., 5n (referred to as “communication terminal 5” when not distinguished from each other) and display devices 6a,. When not distinguished, it is referred to as “display device 6”), distribution devices 3a, 3b, 3c,... 3n (when not distinguished from each other, it is referred to as “distribution device 3”), and gateway devices 7a, 7b,. .. 7n (referred to as “gateway device 7” if not distinguished from each other), content management server 8, location information management server 9, and access points 4a, 4b,... 4n (if not distinguished from each other) "Access point 4"). The communication terminal 5, the distribution device 3, and the gateway device 7 are connected to be communicable via a network 891 based on ZigBee (registered trademark) adopting a physical layer and a MAC layer, for example, in an IEEE 802.15.4 standard architecture model. ing. In this case, the distribution device 3 uses the 800 MHz band, the 900 MHz band, or the 2.4 GHz band according to the usage region such as Japan, the United States, Europe, etc., and passes through the other adjacent distribution devices 3 to obtain the gateway device 7. Can send data to. The gateway device 7 and the location information management server 9 are communicably connected via a network 892 such as a LAN (Local Area Network) or the Internet. The location information management server 9 and the content management server 8 are communicably connected via a network such as a LAN or the Internet. The content management server 8 and the display device 6 are communicably connected via the access point 4 via a network 893 such as a wireless LAN conforming to the IEEE 802.11 standard. Note that the communication method of the networks 891, 892, and 893 is not limited to the above, and if communication between each device is possible, for example, IEEE 802.15.1 (Bluetooth (registered trademark)) of a mobile communication network or a short-range wireless communication standard. Or the like.

  The content management system 1 determines whether the content can be output based on the security level (area security level) of the area corresponding to the current position of the display device 6 and the security level (content security level) of the content displayed and output by the display device 6. It is a system to control. Here, the content in the embodiment of the present invention is so-called digital data, which is data such as video, still image, audio, and text. The content security level (content security level) is a degree of security that defines whether or not the content display apparatus 6 can output the content set for each content, and is, for example, a degree of confidentiality of the content. For example, the content security level of confidential content with high confidentiality is high, and the content security level of content such as advertisements distributed to the public is low. The area security level (area security level) is the degree of security that defines whether or not the display device 6 can output the content set for each area. For example, the publicity and confidentiality of the area where the content is displayed and output. Set according to gender. For example, the area security level of an area limited to a specific user such as a company meeting room is high, and the area security level of an area where there is a high possibility that an unspecified person such as a company reception lobby is low. . In addition, when not distinguishing the security level of a content and an area, it is only called a security level.

  The distribution apparatus 3 is built in, for example, the electric devices 2a, 2b, 2c,... 2n (referred to as “electric device 2” if they are not distinguished from each other) installed on the ceiling in the room or outside these devices. It is attached. The electric device 2 supplies power to the distribution device 3. The electrical device 2 is, for example, a fluorescent lamp type LED (Light Emitting Diode) lighting fixture. The electrical device 2 is not limited to an LED lighting device, and may be a general fluorescent lamp, a ventilation fan, a speaker, a surveillance camera, an air conditioner, or the like. The distribution apparatus 3 owns position information corresponding to the position where the own device is fixed, and transmits the position information continuously or intermittently to a predetermined range by a radio signal. The predetermined range is determined by the signal strength of the radio signal used and the directivity of the transmission antenna. The distribution device 3 is arranged so as to cover an area that is a position management target, and is configured so that the respective areas do not overlap. Or even if it is a case where it overlaps, in the side which receives a positional information, it is comprised so that any one delivery apparatus 3 can be determined based on the intensity | strength of a received radio wave. In the example of FIG. 1, a conical dotted line shown below the distribution device 3 represents a predetermined range. As a communication method for transmitting position information, for example, a ground complementary signal IMES (Indoor Messaging System) can be used. Further, the distribution device 3 can transmit / receive data other than the position information to / from the communication terminal 5 or the gateway device 7.

  The communication terminal 5 is attached to the display device 6 and is, for example, an RFID (Radio Frequency IDentification) tag. For example, the communication terminal 5 receives a positioning signal conforming to the ground complementary signal IMES standard transmitted from the distribution device 3 and acquires position information. Then, the communication terminal 5 transmits the received position information to the position information management server 9 via the network 891. Note that the position information transmitted from the communication terminal 5 includes identification information for uniquely identifying the communication terminal 5. Here, the identification information is, for example, a MAC (Media Access Control) address of the communication terminal 5.

  The display device 6 is, for example, a projector, a display such as a liquid crystal or organic EL (Electro Luminescence), a smart device such as a PC (Personal Computer) or a smartphone, a printer, an MFP (Multifunction Peripheral), or the like. The display device 6 has a communication function for transmitting and receiving data to and from the content management server 8 via the network 893 (access point 4), a display output function for displaying and outputting content, an information storage function, and the like. For example, when the display device 6 is a projector, a PC may be connected to the projector, and the PC may have a communication function for receiving content from the content management server 8.

  The gateway device 7 connects the network 891 and the network 892 to each other, and bridges data transmitted from one network to the other network. The gateway device 7 is installed, for example, for each floor of a building or for each room partitioned by walls. When the network 891 is a network based on the IEEE 802.15.4 standard and ZigBee (registered trademark), and the network 892 is a LAN conforming to the IEEE 802.3 standard, the communication method between them is converted.

  The location information management server 9 has a location information management function and an information communication function for managing location information of the communication terminal 5.

  Here, an outline of an example of a location information management method by the location information management server 9 will be described.

  In the embodiment of the present invention, for example, the distribution device 3 installed on the ceiling distributes position information indicating the position where the distribution device 3 is installed by wireless communication. Thereby, the communication terminal 5 receives the position information distributed from the distribution device 3.

  Next, the communication terminal 5 transmits identification information for identifying the communication terminal 5 and the received position information to the distribution device 3 by wireless communication. In this case, the communication terminal 5 sends back the position information distributed and received from the distribution device 3 to the distribution device 3. Thereby, the distribution apparatus 3 receives the identification information and position information of the communication terminal 5.

  Next, the distribution device transmits the identification information and position information of the communication terminal 5 to the gateway device 7 by wireless communication.

  Then, the gateway device 7 transmits the identification information and position information of the communication terminal 5 to the position information management server 9 via the network 892.

  The position information management server 9 manages the identification information and position information of the communication terminal 5, so that the administrator of the position information management server 9 can locate the position of the communication terminal 5 and the display device 6 to which the communication terminal 5 is attached in the room. Can be grasped.

  Note that the communication terminal 5 may transmit data such as location information to the gateway device 7 when the gateway device 7 is present in the vicinity of the distribution device 3 that has transmitted the location information. Thereby, the identification information and position information of the communication terminal 5 can be transmitted to the position information management server 9 through the shortest path.

  The content management server 8 has an information storage function for storing content to be displayed and output on the display device 6, data transmission / reception with the display device 6 using the network 893 (access point 4), and data transmission / reception with the location information management server 9. Communication function for Further, the content management server 8 stores a security level (area security level) corresponding to an area (for example, a reception lobby, a reception room, a conference room, etc.) and a security level (content security level) for each content. Based on the area security level and the content security level, the display device 6 determines whether or not the content to be output can be output.

[System operation overview]
An outline of the operation of the content management system 1 in the embodiment of the present invention will be described.

  (1) The communication terminal 5 attached to the display device 6 periodically (for example, 60 seconds cycle) or periodically (for example, from the distribution device 3 by the position information reception process triggered by detection of an operation by the acceleration sensor) Position information transmitted in a 30-second period) is received. Next, the communication terminal 5 transmits the received position information and the identification information of the communication terminal 5 to the position information management server 9 via the network 891. The location information management server 9 stores the identification information of the communication terminal 5 and the location information in association with each other. The operation (1) is performed independently of the subsequent operations.

  (2) The content management server 8 stores the database storing the area security level, the database storing the content security level, the identification information of the display device 6 and the identification information of the communication terminal 5 attached to the display device 6. It has a database in which the associated database and the content file or the storage address of the file are stored.

  (3) The display device 6 transmits a content acquisition request for acquiring content to be displayed and output from the content management server 8 to the content management server 8 via the network 893. The content acquisition request includes the content name to be displayed and output and the identification information of the display device 6.

  (4) Upon receiving the content acquisition request, the content management server 8 first extracts the identification information of the communication terminal 5 attached to the display device 6 based on the identification information of the display device 6. Next, the location information of the communication terminal 5 is acquired from the location information management server 9 based on the extracted identification information of the communication terminal 5. Then, the area security level of the area corresponding to the acquired position information of the communication terminal 5 is acquired. Further, the content security level is acquired based on the content name included in the content acquisition request. Based on the acquired area security level and content security level, it is determined whether or not the content to be displayed is to be output. An outline of the output permission determination process will be described with reference to FIG.

  FIG. 2 is a diagram for explaining an example of a processing outline of content output permission determination in the embodiment of the present invention. As shown in FIG. 2, “Area A: Reception Lobby”, “Area B: Reception Room”, and “Area C: Conference Room” corresponding to the example of FIG. “Medium” and “High” are set. FIG. 2 shows whether or not display output is possible in each area when the content security level set for each display output target content is “high”, “medium”, or “low”. . As shown in FIG. 2, when the content security level is “high”, display output is impossible at the area security levels “low” and “medium”, and display output is possible at the area security level “high”. . In other words, for example, content such as confidential information that requires high confidentiality cannot be output in an area (such as a reception lobby) that may be viewed by an unspecified person. On the other hand, in an area that is highly likely to be used by a specific person (related person such as an employee) such as a conference room, for example, confidential content can be output. Whether the content security level is “medium” or “low” is determined based on the same criteria. Therefore, as shown in FIG. 2, the determination as to whether or not the content can be output is processed such that the content display output is permitted when the area security level is equal to or higher than the content security level, and the content display output is not possible otherwise. Is done. Note that the content security levels “high”, “medium”, and “low” shown in FIG. 2 are merely examples. In the embodiment of the present invention, the security level in the content management system 1 is displayed as a numerical value. The security level is not limited to three levels such as “high”, “medium”, and “low”, but can be set in more detail (for example, five levels). The security level can be arbitrarily set and changed by the administrator of the content management system 1 or the like.

  (5) A content acquisition request response is generated based on the determination result of whether or not display output is possible in the content management server 8 and transmitted to the display device 6. When the determination result can be output, the content acquisition request response includes the requested content file to be displayed and output or the storage address of the file. On the other hand, when the determination result cannot be output, the content acquisition request response includes information indicating that the display output target content cannot be output.

  (6) The display device 6 executes a process for outputting or not outputting the content to be displayed based on the information included in the received content acquisition request response.

  As described above, the content management system 1 can control the content output processing on the display device 6 based on the security level of the area and the security level of the content by the operations (1) to (6).

[Hardware configuration]
<Communication terminal>
FIG. 3 is a diagram illustrating an example of a hardware configuration of the communication terminal 5 according to the embodiment of the present invention.

  As shown in FIG. 3, the communication terminal 5 includes a control unit 14 and a wireless communication unit 15.

  Among these, the control unit 14 receives the position information distributed from the CPU 401 that controls the operation of the entire control unit 14, the ROM 402 that stores the basic input / output program, the RAM 403 that is used as the work area of the CPU 401, and the distribution device 3. A communication circuit 404 and an antenna 404a, an acceleration sensor 405 that detects acceleration, an I / F 408 that transmits and receives signals to and from the wireless communication unit 15, and a bus line 409 such as an address bus and a data bus for electrically connecting the above-described units. It has. The control unit 14 is also provided with a button battery 406 and is driven by the button battery 406. In the embodiment of the present invention, the case where the button battery 406 is used will be described. However, the battery is not limited to the button type, and a dry battery such as AA or AAA or a battery dedicated to the communication terminal 5 may be used.

  The communication circuit 404 receives position information distributed using IMES by the antenna 404a. Further, the control unit 14 supplies power of the button battery 406 to the wireless communication unit 15 via the connector 409a. Furthermore, the control unit 14 transmits and receives data (signals) to and from the wireless communication unit 15 via the connector 409b from the I / F 408.

  The acceleration sensor 405 detects a change in acceleration of the communication terminal 5. The change in acceleration is detected, for example, when the communication terminal 5 starts moving, when the communication terminal 5 stops moving, or when the communication terminal 5 tilts. When the process of the CPU 401 is stopped, when the acceleration sensor 405 detects a change in acceleration, the CPU 401 transmits a signal for starting the process to the CPU 401. As a result, the CPU 401 starts its own process and transmits a signal for starting the process to the communication circuit 404. Therefore, when the position information is distributed from the distribution device 3, the communication circuit 404 of the communication terminal 5 can start receiving the position information via the antenna 404a.

  On the other hand, the wireless communication unit 15 basically has the same configuration as the wireless communication unit 13 and transmits / receives data to / from the wireless communication unit 13 of the distribution device 3 using the same band as the wireless communication unit 13. Can do. As shown in FIG. 3, the wireless communication unit 15 includes a CPU 501 that controls the operation of the entire wireless communication unit 15, a ROM 502 that stores basic input / output programs and identification information, a RAM 503 that is used as a work area for the CPU 501, A communication circuit 504 and an antenna 504a for transmitting position information and identification information, an I / F 508 for transmitting and receiving signals to and from the control unit 14, and a bus line 509 such as an address bus and a data bus for electrically connecting the respective units. It has. The wireless communication unit 15 may also use ZigBee (registered trademark).

  Further, the communication circuit 504 acquires position information stored in the RAM 403 of the control unit 14 via the connector 409b according to a command from the CPU 501. Further, the communication circuit 504 reads the identification information stored in the ROM 502 and transmits it to the distribution device 3 via the antenna 504a together with the acquired position information.

  Further, the position information data transmitted by the communication circuit 504 has a format as shown in FIG. FIG. 4 is a conceptual diagram showing an example of the data format of the position information in the embodiment of the present invention. In the example of FIG. 4, the floor, latitude, longitude, and building number fields are represented by 9 bits, 21 bits, 21 bits, and 8 bits, respectively, and the representation format of each field conforms to the IMES standard. Actually, in addition to this format, a header and checksum information defined by the communication method are added, and as shown in FIG. 5, a transmission destination, a transmission source, and data contents (position information, etc.) are included. FIG. 5 is a conceptual diagram showing an example of a data structure of data including position information in the embodiment of the present invention.

<Distributor>
FIG. 6 is a diagram illustrating an example of a hardware configuration of the distribution apparatus 3 according to the embodiment of the present invention. The example of FIG. 6 is a hardware configuration diagram of a fluorescent LED lamp when the electric device 2 in which the distribution device 3 is built is an LED lighting apparatus.

  As shown in FIG. 6, the LED lamp 130 mainly includes a power control unit 140, lead wires (151a, 151b), terminal pins (152a1, 152a2, 152b1, 152b2), lead wires 153, lead wires 154, lead wires. 155 and the distribution device 3. Among these, the power supply control unit 140 controls a current output from the power supply, and is mainly configured by a current monitoring circuit 141 and a smoothing circuit 142. The current monitoring circuit 141 receives and rectifies the current output from the power supply. The smoothing circuit 142 smoothes the current rectified by the current monitoring circuit 141, and supplies power to each terminal pin (152a1, 152a2, 152b1, 152b2) via the lead wires (151a, 151b).

  Further, the power supply control unit 140 and the terminal pins (152a1, 152a2, 152b1, 152b2) are electrically connected by lead wires (151a, 151b). The power supply controller 140 and the distribution device 3 are electrically connected by a lead wire 154. Although only one LED 160 is shown in FIG. 6, a plurality of LEDs are actually attached. Further, the configuration other than the distribution device 3 in the configuration shown in FIG. 6 is the same as that of a general LED lamp.

  The distribution device 3 includes a voltage converter 100, a lead wire 155, a control unit 11, a position information distribution unit 12, and a wireless communication unit 13. The voltage converter 100 is electrically connected to the control unit 11, the position information distribution unit 12, and the wireless communication unit 13 via the lead wire 155.

  Among them, the voltage converter 100 is an electronic component that converts the voltage of the power supplied from the power supply control unit 140 into a drive voltage of the distribution device 3 and supplies the drive voltage to the control unit 11, the position information distribution unit 12, and the wireless communication unit 13. is there.

  In addition, the control unit 11 includes a CPU 101 that controls the operation of the entire control unit 11, a ROM 102 that stores basic input / output programs, a RAM 103 that is used as a work area for the CPU 101, a position information distribution unit 12, and a wireless communication unit 13, respectively. And an I / F (108a, 108b) for transmitting and receiving and a bus line 109 such as an address bus and a data bus for electrically connecting the above-described units.

  The position information distribution unit 12 includes a CPU 201 that controls the operation of the entire position information distribution unit 12, a ROM 202 that stores basic input / output programs and position information, a communication circuit 204 that distributes position information, an antenna 204 a, and the control unit 11. An I / F 208 for transmitting and receiving signals and a bus line 209 such as an address bus and a data bus for electrically connecting the above-described units are provided.

  Among these, the communication circuit 204 uses IMES, which is one of indoor positioning techniques called indoor GPS, and distributes position information by the antenna 204a. In FIG. 1, a reachable range (distributable range) of position information is virtually represented by a broken line. In the IMES according to the embodiment of the present invention, for example, when the indoor ceiling height is about 3 m, the transmission output is set so that the radius of the reachable virtual circle of the position information represented on the indoor floor is about 5 m. Is set. However, if this transmission output setting is changed, it can be made smaller than 5 m, and can be made larger.

  Further, the position information distributed by the distribution device 3 in the embodiment of the present invention indicates the position where the electric device 2 that is a fluorescent lamp type LED lighting apparatus is installed, and as shown in FIG. Includes items for longitude and building number. FIG. 7 is a conceptual diagram of position information distributed by the distribution apparatus.

  Of these, the number of floors represents the number of floors of the building where the electrical equipment 2 (distribution device 3) is installed. The latitude and longitude represent the latitude and longitude of the position where the electrical device 2 (distribution device 3) is installed. The building number represents the building number of the building where the electrical equipment 2 (distribution device 3) is installed. In the example of FIG. 7, the electrical device 2 (distribution apparatus 3) is installed on the 16th floor of a building C at a latitude of 35.66660 degrees north latitude and 139.76520 degrees longitude. It is shown. The latitude may be represented by the south latitude and the longitude by the west longitude.

  Returning to FIG. The wireless communication unit 13 receives the CPU 301 that controls the overall operation of the wireless communication unit 13, the ROM 302 that stores the basic input / output program and the device identification information, the RAM 303 that is used as the work area of the CPU 301, the position information and the identification information A communication circuit 304 and an antenna 304 a that transmit to the gateway device 7, an I / F 308 that transmits and receives signals to and from the control unit 11, and a bus line 309 such as an address bus and a data bus for electrically connecting the respective units. ing.

  The wireless communication unit 13 transmits and receives data using the 920 MHz band. Since the radio wave reachability of the 920 MHz band is high, data is transmitted from the distribution device 3 to the gateway device 7 even when a pillar or wall of a building exists between the distribution device 3 and the gateway device 7. There is an effect that can be.

  Further, the communication circuit 304 uses at least a physical layer (layer) standard among the IEEE 802.15.4 standard architecture models, and transmits and receives data by the antenna 304a. In this case, a MAC address can be used as device identification information for identifying the distribution device 3 (wireless communication unit 13).

  When the standard used by the communication circuit 304 is ZigBee (registered trademark), data can be transmitted to the gateway device 7 via another adjacent distribution device 3. If multi-hop communication that transmits data via another distribution device 3 is used in this way, the wireless communication unit 13 of each distribution device 3 takes time for the routing process, but data is transmitted to the nearest distribution device 3. Therefore, there is an advantage that it can be driven with power saving.

  Further, the position information distributed by the distribution apparatus 3 may be stored in the storage unit 29 by the manufacturer before the distribution apparatus 3 is shipped from the factory, or the electric device 2 is installed on the ceiling after the distribution apparatus 3 is shipped from the factory. May be memorized by the installer. Further, the position information is received by the communication circuit 304 of the wireless communication unit 13 by wireless communication from an external device such as the position information management server 9 via the gateway device 7, and the position information distribution unit 12 is transmitted via the control unit 11. May be stored in the ROM 202.

<Gateway device>
As illustrated in FIG. 8, the gateway device 7 includes a wireless communication unit 17 and a wired communication unit 18.

  Among these, the wireless communication unit 17 has basically the same configuration as the wireless communication unit 13 and transmits / receives data to / from the wireless communication unit 13 of the distribution device 3 using the same band as the wireless communication unit 13. Can do. As shown in FIG. 8, the wireless communication unit 17 includes a CPU 701 that controls the overall operation of the wireless communication unit 17, a ROM 702 that stores basic input / output programs and device identification information, a RAM 703 that is used as a work area for the CPU 701, A communication circuit 704 and an antenna 704a for transmitting information and the like, an I / F 708 for transmitting and receiving signals to and from the wired communication unit 18, and a bus line 709 such as an address bus and a data bus for electrically connecting the respective units are provided. . The wireless communication unit 17 transmits and receives signals to and from the wired communication unit 18 via the connector 709a from the I / F 708.

  The wireless communication unit 17 may also use ZigBee (registered trademark). The device identification information is unique information for identifying the gateway device 7 (wireless communication unit 17). Examples of the device identification information include a MAC address.

  On the other hand, as shown in FIG. 8, the wired communication unit 18 includes a CPU 801 that controls the overall operation of the wired communication unit 18, a ROM 802 that stores basic input / output programs and address information, and a RAM 803 that is used as a work area for the CPU 801. An Ethernet controller 805, an I / F 808a for transmitting / receiving signals to / from the wireless communication unit 17, an I / F 808b for transmitting / receiving data (signals) to / from the LAN 8e via the cable 809, and an address bus for electrically connecting the above units A bus line 809 such as a data bus is provided.

  Here, the CPU 801 and the Ethernet controller 805 convert the communication method (communication protocol) compliant with the IEEE 802.15.4 standard into the communication method (communication protocol) compliant with the IEEE 802.3 standard, and send it from the distribution device 3. The received data (information) is controlled so that Ethernet (registered trademark) packet communication can be performed.

  Further, the address information is unique information for identifying the gateway device 7 (wired communication unit 18). Examples of the address information include an IP (Internet Protocol Address) address. Note that the ROM 802 also stores a MAC address, but a description thereof is omitted to simplify the communication with the location information management server 9.

<Location information management server>
FIG. 9 is a diagram illustrating an example of a hardware configuration of the location information management server 9 according to the embodiment of the present invention.

  The location information management server 9 is configured by a computer. The location information management server 9 is used as a work area for the CPU 901 that controls the overall operation of the location information management server 9, a ROM 902 that stores programs used to drive the CPU 901 such as an IPL (Initial Program Loader), and the CPU 901. RAM 903, HD 904 for storing various data such as programs for the location information management server 9 and address information, HDD 905 for controlling the reading or writing of various data to the HD 904 according to the control of the CPU 901, data for the recording medium 906 such as a flash memory A media drive 907 that controls reading or writing (storage), a display 908 that displays various information such as a cursor, menu, window, character, or image, a network 892, and a network 893 Network I / F 909 for data communication using, keyboard 911 having a plurality of keys for inputting characters, numerical values, various instructions, selection and execution of various instructions, selection of processing target, movement of cursor, etc. For connecting a mouse 912 that performs the recording, a CD-ROM drive 914 that controls reading or writing of various data to and from a CD-ROM 913 as an example of a detachable recording medium, a communication circuit 915 that performs wireless communication, an antenna 915a, and an external device. The external device I / F 916 and a bus line 910 such as an address bus and a data bus for electrically connecting the above components are provided.

  Further, the address information is unique information for identifying the location information management server 9. The address information includes an IP address. Although the MAC address is also stored in the ROM 902, the description thereof will be omitted to simplify the communication with the gateway device 7.

<Content management server>
FIG. 10 is a diagram showing an example of a hardware configuration of the content management server 8 according to the embodiment of the present invention.

  The content management server 9 is configured by a computer. The content management server 8 includes a CPU 821 that controls the overall operation of the content management server 8, a ROM 822 that stores programs used to drive the CPU 821 such as an IPL, a RAM 823 that is used as a work area for the CPU 821, and the content management server 8 Controls reading / writing (storage) of data to / from a recording medium 826 such as a flash memory, an HDD 825 that controls reading / writing of various data to / from the HD 824 according to the control of the CPU 821 Media drive 827, display 828 displaying various information such as cursor, menu, window, character or image, network 892, and network 893 A network I / F 829 for communication, a keyboard 831 having a plurality of keys for inputting characters, numerical values, various instructions, etc., a mouse 832 for selecting and executing various instructions, selecting a processing target, moving a cursor, etc. , A CD-ROM drive 834 for controlling reading or writing of various data with respect to a CD-ROM 833 as an example of a removable recording medium, a communication circuit 835 and an antenna 835a for performing wireless communication, and an external device I for connecting an external device / F836 and a bus line 830 such as an address bus and a data bus for electrically connecting the above components.

  Further, the address information is unique information for identifying the content management server 8. The address information includes an IP address. The ROM 822 also stores a MAC address.

<Display device>
FIG. 11 is a diagram illustrating an example of a hardware configuration of the display device 6 according to the embodiment of the present invention. A communication terminal 5 is attached to the outside of the display device 6. However, the communication terminal 5 may be built in the display device 6.

  As shown in FIG. 11, the display device 6 includes a CPU 601 that controls the overall operation of the display device 6, a ROM 602 that stores basic input / output programs, a RAM 603 that is used as a work area for the CPU 601, and a recording medium 604 such as a flash memory. A media drive 605 for controlling data reading or writing (storage). Under the control of the media drive 605, the recording medium 604 from which data that has already been recorded is read or data is newly written and stored is detachable.

Further, the display device 6 includes a wireless LAN communication unit 606 that performs wireless LAN communication conforming to the IEEE 802.11 standard with the access point 4, a liquid crystal panel 607 that outputs an image by transmitting light, and a liquid crystal that displays information for the user. And a display 608 such as an organic EL, an input unit 609 such as a hard button or a remote controller or a soft key that is an interface for receiving an input from a user, a speaker 610 used for sound output by converting an electric signal into sound, and the above-described units. A bus line 611 such as an address bus or a data bus is provided. Note that the IP address used for wireless LAN communication is stored in the RAM 603, and the MAC address of the display device 6 is stored in the ROM 602.
[Function configuration]
FIG. 12 is a diagram illustrating an example of functional configurations of the distribution device 3 and the communication terminal 5 according to the embodiment of the present invention.

<Distributor>
First, the functional configuration of the distribution apparatus 3 will be described. As illustrated in FIG. 12, the distribution device 3 includes a conversion unit 10, a distribution control unit 20, and a wireless communication control unit 30 as functions or means. Among these, the conversion part 10 is a function or means implement | achieved when the voltage converter 100 shown by FIG. 6 operate | moves.

  The distribution control unit 20 is a function or means realized by the operation of the control unit 11 and the position information distribution unit 12 illustrated in FIG. Furthermore, the wireless communication control unit 30 is a function or means realized by the operation of the control unit 11 and the wireless communication unit 13 illustrated in FIG.

  The distribution control unit 20 has a storage unit 29 constructed by the ROM 202 shown in FIG. The storage unit 29 stores position information indicating the position where the distribution device 3 is installed. Further, the distribution control unit 20 includes a distribution unit 21, a communication unit 27, and a storage / readout unit 28.

  Among them, the distribution unit 21 is realized by the processing of the CPU 201 and the communication circuit 204 shown in FIG. 6 and distributes position information within a distributable range.

  The communication unit 27 is realized by the processing of the CPUs 101 and 201 shown in FIG. 6, the I / Fs 108 a and 208, and the buses 109 and 209, and performs data (signal) communication with the wireless communication control unit 30.

  The storage / reading unit 28 is realized by the processing of the CPUs 101 and 201 shown in FIG. 6, stores various data in the storage unit 29, and reads out various data from the storage unit 29. The storage / reading unit 28 stores and reads out position information data, for example.

  The wireless communication control unit 30 includes a storage unit 39 constructed by the RAM 303 shown in FIG. The storage unit 39 stores address information (for example, an IP address).

  The transmission / reception unit 31 is realized by the processing of the CPU 301 and the communication circuit 304 illustrated in FIG. 6, and transmits / receives various data to / from the communication terminal 5 or the gateway device 7 through wireless communication.

  The communication unit 37 is realized by the processing of the CPUs 101 and 301 shown in FIG. 6 and the I / F 108B and 308 and the buses 109 and 309, and performs data (signal) communication with the distribution control unit 20.

  The storage / reading unit 38 stores various data in the storage unit 39 and reads various data from the storage unit 39.

<Communication terminal>
Next, the functional configuration of the communication terminal 5 will be described. As illustrated in FIG. 12, the communication terminal 5 includes a reception control unit 40 and a wireless communication control unit 50 as functions or means.

  The reception control unit 40 has a storage unit 49 constructed by the RAM 403 shown in FIG. The storage unit 49 can store the position information distributed from the distribution device 3. The reception control unit 40 further includes a reception unit 41, a detection unit 42, a determination unit 43, a measurement unit 44, a communication unit 47, and a storage / readout unit 48.

  Among these, the receiving unit 41 is realized by the processing of the CPU 401 and the communication circuit 404 illustrated in FIG. 3, and receives the position information distributed from the distribution device 3. In addition, the receiving unit 41 may be in a state where the position information can be received or cannot be received.

  The detection unit 42 is realized by the processing of the CPU 401 and the acceleration sensor 405 illustrated in FIG. 3, detects the movement (including tilt) of the communication terminal 5, and causes the reception unit 41 to start processing. Note that the detection unit 42 may be realized by a motion sensor using inertial force or magnetism instead of the acceleration sensor 405.

  The determination unit 43 is realized by the processing of the CPU 401 illustrated in FIG. 3, and determines whether the reception unit 41 has received at least one piece of position information. Further, the determination unit 43 determines whether the reception unit 41 has received each piece of position information from the plurality of distribution devices 3. In this case, the position information distributed from the same distribution device 3 is treated as one even if it is received a plurality of times within a predetermined time.

  The measurement unit 44 is realized by the processing of the CPU 401 illustrated in FIG. 3, and when the determination unit 43 determines that each position information is received from the plurality of distribution devices 3, the measurement unit 44 relates to each position information. Measure signal strength.

  The communication unit 47 is realized by the processing of the CPU 401 shown in FIG. 3, the I / F 408 and the bus 409, and performs data (signal) communication with the wireless communication control unit 50.

  The storage / reading unit 48 is realized by processing of the CPU 401, stores various data in the storage unit 49, and reads various data from the storage unit 49. The storage / extraction unit 48 stores and reads out position information data, for example.

  The wireless communication control unit 50 includes a storage unit 59 constructed by the RAM 503 shown in FIG. The storage unit 59 stores identification information (for example, a MAC address). The wireless communication control unit 50 further includes a transmission / reception unit 51, a determination unit 53, a measurement unit 54, a communication unit 57, and a storage / readout unit 58.

  The transmission / reception unit 51 is realized by the processing of the CPU 501 and the communication circuit 504 illustrated in FIG. 3, and transmits / receives various data to / from the distribution device 3 through wireless communication.

  The determination unit 53 is realized by the processing of the CPU 501 illustrated in FIG. 3, and determines whether the reception unit 51 has received the device identification information of at least one distribution device 3. Further, the determination unit 53 determines whether the reception unit 51 has received the respective device identification information from the plurality of distribution devices 3. In this case, the device identification information transmitted from the same distribution device 3 is treated as one no matter how many times it is received within a predetermined time.

  The measurement unit 54 is realized mainly by the processing of the CPU 501 shown in FIG. 3, and when the determination unit 53 determines that each device identification information transmitted from the plurality of distribution devices 3 has been received, The signal strength related to each device identification information is measured.

  The communication unit 57 is mainly realized by the processing of the CPU 501 shown in FIG. 3, the I / F 508, and the bus 509, and performs data (signal) communication with the reception control unit 40.

  The storage / reading unit 58 is mainly realized by the processing of the CPU 501 shown in FIG. 3, stores various data in the storage unit 59, and reads out various data from the storage unit 59. For example, the storage / extraction unit 58 stores and reads data of device identification information of the distribution device 3 and identification information of the communication terminal 5.

  FIG. 13 is a diagram illustrating an example of functional configurations of the gateway device 7 and the location information management server 9 according to the embodiment of the present invention.

<Gateway device>
A functional configuration of the gateway device 7 will be described. The gateway device 7 includes a wireless communication control unit 70 and a wired communication control unit 80 as functions or means.

  The wireless communication control unit 70 is realized by the processing of the wireless communication unit 17 illustrated in FIG. 8 and basically has the same function as the wireless communication control unit 30 of the distribution device 3.

  Specifically, the wireless communication control unit 70 has a storage unit 79 constructed by the RAM 703 shown in FIG. The storage unit 79 stores address information (for example, IP address) of the gateway device 7. The wireless communication control unit 70 includes a transmission / reception unit 71, a communication unit 77, and a storage / reading unit 78.

  Among these, the transmission / reception unit 71 is mainly realized by the processing of the CPU 701 and the communication circuit 704 illustrated in FIG. 8, and transmits and receives various data to and from the distribution device 3 through wireless communication.

  The communication unit 77 is realized mainly by the processing of the CPU 701, the I / F 708 and the bus 709, and performs data (signal) communication with the wired communication control unit 80.

  The storage / reading unit 78 is realized mainly by the processing of the CPU 801, stores various data in the storage unit 79, and reads out various data from the storage unit 79.

  The wired communication control unit 80 is realized by the processing of the wired communication unit 18 shown in FIG. The wired communication control unit 80 has a storage unit 89 constructed by the RAM 803 shown in FIG. The storage unit 89 stores device identification information (for example, a MAC address) of the gateway device 7. Further, the wired communication control unit 80 includes a transmission / reception unit 81, a conversion unit 82, a communication unit 87, and a storage / reading unit 88.

  Among them, the transmission / reception unit 81 is realized mainly by the processing of the CPU 801 and the I / F 808b shown in FIG. 8, and transmits / receives various data to / from the location information management server 9 by wired communication.

  The conversion unit 82 is realized by the processing of the CPU 801 and the Ethernet controller 805 shown in FIG. The conversion unit 82 controls the various data (information) sent from the distribution device 3 so that Ethernet (registered trademark) packet communication can be performed by converting the communication method as described above.

  The communication unit 87 is mainly realized by the processing of the CPU 801, the I / F 808a, and the bus 809, and performs data (signal) communication with the wireless communication control unit 70.

  The storage / reading unit 98 is realized mainly by the processing of the CPU 801, stores various data in the storage unit 89, and reads out various data from the storage unit 89.

<Location information management server>
Next, the functional configuration of the location information management server 9 will be described. The location information management server 9 includes a transmission / reception unit 91, an operation input reception unit 92, a search unit 93, a display control unit 94, a terminal location information response unit 95, a storage / reading unit 98, and a storage unit 99.

  The storage unit 99 is constructed by the RAM 903 and the HD 904 shown in FIG. 9, and includes a location information storage unit 991 and a server information storage unit 992.

  The position information storage unit 991 stores position information transmitted from the communication terminal 5.

  FIG. 14 is a diagram illustrating an example of information stored in the position information storage unit 991 of the position information management server 9 according to the embodiment of the present invention. As shown in FIG. 14, the position information storage unit 991 includes “management ID”, “identification information”, “latitude”, “longitude”, “floor”, “building”, and “reception date”.

  “Management ID” is a management number for uniquely identifying the position information of the communication terminal 5 in the position information storage unit 991. “Identification information” is information for identifying the communication terminal 5, for example, the MAC address of the communication terminal 5. “Identification information” is transmitted from the communication terminal 5. “Latitude”, “longitude”, “floor”, and “building” are position information in the embodiment of the present invention, and are information shown in FIG. “Reception date and time” is the reception date and time when the location information management server 9 received location information from the gateway device 7.

  Returning to FIG. The server information storage unit 992 stores identification information such as address information (for example, an IP address) of the location information management server 9 and a MAC address.

  The transmission / reception unit 91 is realized by the processing of the CPU 901 and the network I / F 909 or the communication circuit 915 shown in FIG. 9, and transmits / receives various data to / from the gateway device 7 or the content management server 8 by wired communication or wireless communication.

  The operation input receiving unit 92 is realized by the processing of the CPU 901, the keyboard 911, and the mouse 912, and receives various selections or inputs from the administrator.

  The search unit 93 is realized by the processing of the CPU 901, searches the position information storage unit 991 via the storage / reading unit 98 based on the search condition received by the operation input reception unit 92, and outputs the search result.

  The display control unit 94 is realized by the processing of the CPU 901 and performs control for displaying various images and characters on the display 908.

  The storage / reading unit 98 is realized mainly by the processing of the CPU 901, stores various data in the storage unit 99, and reads various data from the storage unit 99.

  The terminal location information response unit 95 receives and responds to a communication terminal location information acquisition request for acquiring location information of the communication terminal 5 transmitted from the content management server 8. The communication terminal position information acquisition request includes the identification information of the communication terminal 5, and the terminal position information response unit 95 receives position information (latitude, longitude) corresponding to the identification information of the communication terminal 5 from the position information storage unit 991. , Number of floors, building). Then, the terminal location information response unit 95 generates a communication terminal location information acquisition request response including the location information of the communication terminal 5 and transmits the response to the content management server 8 via the transmission / reception unit 91. Note that the terminal location information response unit 95 has a predetermined difference between, for example, the time when the communication terminal location information acquisition request is received and the reception date and time in the location information storage unit 991 corresponding to the identification information of the communication terminal 5 included therein. If the time is longer than (for example, 30 minutes), the position information of the communication terminal 5 may not be set in the communication terminal position information acquisition request response, or information indicating that position information cannot be acquired may be included. This is because the current actual position of the communication terminal 5 may not be reflected in the position information storage unit 991 in such a case.

  FIG. 15 is a diagram illustrating an example of functional configurations of the content management server 8 and the display device 6 according to the embodiment of the present invention.

<Content management server>
A functional configuration of the content management server 8 will be described. The content management server 8 includes a transmission / reception unit 841, a content acquisition request reception unit 842, a content acquisition request response unit 843, a terminal location information acquisition unit 844, an output availability determination unit 845, a storage / readout unit 848, and a storage unit 849. The storage unit 849 includes a content information storage unit 8491, an area information storage unit 8492, a display device related information storage unit 8493, a content data storage unit 8494, and the like.

  The content information storage unit 8491 stores a content security level related to content to be output to the display device 6.

  FIG. 16 is a diagram illustrating an example of information stored in the content information storage unit 8491 of the content management server 8 according to the embodiment of the present invention. As shown in FIG. 16, the content information storage unit 8491 includes “content ID”, “content name”, “content security level”, and the like.

  The “content ID” is a management number for uniquely identifying the content (“content name”) in the content information storage unit 8491.

  “Content name” is the name of the content displayed and output on the display device 6. The “content name” is displayed as a combination of an arbitrary content name and a content file extension.

  The “content security level” is a security level that defines whether or not to output content set for each content. In the embodiment of the present invention, the “content security level” has five levels. The higher the level (the closer to “5”), for example, the higher confidentiality is required and the disclosure to unspecified persons is. Indicates that the content is inappropriate. Conversely, the lower the level (closer to “1”), for example, indicates that the content is based on the premise of being disclosed to an unspecified person who does not require high confidentiality. Information stored in the content information storage unit 8491 is set in advance by an administrator of the content management system 1 or the like.

  Returning to FIG. The area information storage unit 8492 stores a security level and area position information regarding an area that is an indoor area.

  FIG. 17 is a diagram illustrating an example of information stored in the area information storage unit 8492 of the content management server 8 according to the embodiment of the present invention. As shown in FIG. 17, the area information storage unit 8492 has “area ID”, “area name”, “area security level”, “building”, “floor”, “east end”, “west end”, “south end”. ”And“ north end ”.

  The “area ID” is a management number for uniquely identifying the area name, security level, and the like in the area information storage unit 8492.

  “Area name” is the name of the area. The “area name” can be arbitrarily changed by an administrator or the like.

  The “area security level” is a security level that defines whether or not to output content set for each area. In the embodiment of the present invention, the “area security level” has five levels. The higher the level (closer to “5”), for example, the higher the confidentiality, and the use is limited to a specific person. It shows that the area is. Conversely, the lower the level (closer to “1”), the lower the confidentiality, for example, indicating that the area is used by an unspecified person. The “area security level” can be arbitrarily changed by an administrator or the like.

  “Building” is the name of the building of the building to which the area belongs.

  “Number of floors” is the number of floors in the building to which the area belongs.

  “East end” and “West end” are the boundaries (east longitude) of the boundary between the east side and the west side of the area. "South end" and "north end" represent the boundary line between the south side and the north side of the area in latitude (north latitude). That is, the area range can be defined by a rectangle.

  In the example of FIG. 17, the area name “Conference Room A” of the area security level “5” is from north latitude “35.50403” to north latitude “35.50454”, east longitude “139.62003” to east longitude “139.62102”. This is a range surrounded by four lines and indicates the “1” floor of the “Y” building.

  In addition, the definition of the position (range) of the area in the embodiment of the present invention is not limited to the above method, and for example, by using a polygon having five or more sides using a plurality of latitudes and longitudes, etc. A range may be defined. As another method, the area range may be defined by a plurality of points (latitude, longitude) corresponding to the position information based on the position information of the distribution device 3 installed in the area range. The information stored in the area information storage unit 8492 is set in advance by the administrator of the content management system 1 and the information is changed when an area is added or changed.

  Returning to FIG. The display device related information storage unit 8493 stores the display device 6 and the communication terminal 5 attached to the display device 6 in association with each other.

  FIG. 18 is a diagram showing an example of information stored in the display device related information storage unit 8493 of the content management server 8 in the embodiment of the present invention. As shown in FIG. 18, the display device related information storage unit 8493 stores “display device ID”, “display device identification information”, “communication terminal identification information”, and the like.

  “Display device ID” is a management number for uniquely identifying the display device 6 in the display device related information storage unit 8493.

  “Display device identification information” is identification information (for example, a MAC address) for uniquely identifying the display device 6.

  The “communication terminal identification information” is identification information (for example, a MAC address) for uniquely identifying the communication terminal 5 and is stored in association with the identification information of the display device 6 to which the communication terminal 5 is attached.

  “Display device identification information” and “communication terminal identification information” are information stored in advance by an administrator or the like. When the display device 6 and the communication terminal 5 attached thereto are changed, information stored in the display device related information storage unit 8493 is changed.

  Returning to FIG. The content data storage unit 8494 stores the display device 6 and the communication terminal 5 attached to the display device 6 in association with each other.

  FIG. 19 is a diagram showing an example of information stored in the content data storage unit 8494 of the content management server 8 according to the embodiment of the present invention. As illustrated in FIG. 19, the content data storage unit 8494 stores “content ID”, “content name”, “data storage destination address”, and the like.

  “Content ID” is a management number for uniquely identifying a content (“content name”) in the content data storage unit 8494.

  “Content name” is the name of the content displayed and output on the display device 6. The “content name” is displayed as a combination of an arbitrary content name and a content file extension. If the “content name” stored in the content information storage unit 8491 and the “content name” stored in the content data storage unit 8494 are the same, it means the same content.

  The “data storage destination address” is information indicating a location (address) where the file body of the content is stored. The location where the content file main body is stored is not limited to the storage device in the content management server 8, but may be a server other than the content management server 8, an external recording medium, or the like. In the example of FIG. 19, the content management server 8 is the storage destination of the content IDs “1” to “3”, but the storage destination of the content IDs “4” and “5” is another server. Show.

  Returning to FIG.

  The storage / reading unit 848 is realized mainly by the processing of the CPU 821, stores various data in the storage unit 849, and reads various data from the storage unit 849.

  The transmission / reception unit 841 is realized by the processing of the CPU 821 shown in FIG. 10 and the network I / F 829 or the communication circuit 835, and transmits / receives various data to / from the display device 6 or the location information management server 9 by wired communication or wireless communication.

  The content acquisition request receiving unit 842 receives a content acquisition request transmitted from the display device 6. The content acquisition request is a request for the display device 6 to acquire content (output target content) to be displayed and output on the display device 6 from the content management server 8. The content acquisition request includes the name of the output target content and the identification information (for example, the MAC address) of the display device 6. The content acquisition request reception unit 842 notifies the terminal position information acquisition unit 844 of the identification information of the display device 6 included in the content acquisition request. In addition, the content acquisition request reception unit 842 notifies the output availability determination unit 845 of the name of the output target content included in the content acquisition request.

  Based on the identification information (display device identification information) of the display device 6 included in the content acquisition request notified from the content acquisition request receiving unit 842, the terminal position information acquisition unit 844 is displayed from the display device related information storage unit 8493 to the display device 6. The identification information (communication terminal identification information) of the communication terminal 5 corresponding to is acquired. Next, the terminal location information acquisition unit 844 transmits a communication terminal location information acquisition request for acquiring the location information of the communication terminal 5 that acquired the identification information to the location information management server 9 via the transmission / reception unit 841. When the position information of the communication terminal 5 is acquired from the position information management server 9, the terminal position information acquisition unit 844 notifies the output enable / disable determination unit 845 of the acquired position information of the communication terminal 5.

  Based on the position information of the communication terminal 5 notified from the terminal position information acquisition unit 844 and the position information indicating the area of the area stored in the area information storage unit 8492, the output permission determination unit 845 determines the position of the communication terminal 5 Read the area security level. Next, the output permission determination unit 845 reads the content security level from the content information storage unit 8491 based on the name of the output target content included in the content acquisition request notified from the content acquisition request reception unit 842. Then, the output propriety determination unit 845 compares the read area security level with the content security level to determine whether the display device 6 can output the content. The output enable / disable determining unit 845 notifies the content acquisition request response unit 843 of the output enable / disable determination result.

  The content acquisition request response unit 843 generates a content acquisition request response based on the output propriety determination result notified from the output propriety determination unit 845. When the determination result can be output, the content acquisition request response unit 843 generates the output target content file from the data storage destination address stored in the content data storage unit 8494 based on the name of the output target content included in the content acquisition request. Is read. Then, the content acquisition request response unit 843 generates a content acquisition request response including (attached) the read output target content file. Instead of attaching the file main body of the output target content to the content acquisition request response, the data storage destination address where the content file is stored may be notified. On the other hand, when the determination result cannot be output, the content acquisition request response unit 843 generates a content acquisition request response including an error message indicating that the content cannot be acquired. The content acquisition request response unit 843 transmits the generated content acquisition request response to the display device 6 via the transmission / reception unit.

<Display device>
Next, the functional configuration of the display device will be described with reference to FIG.

  The display device 6 includes a transmission / reception unit 61, a display control unit 62, an operation input reception unit 64, a content acquisition request generation unit 65, a content acquisition request response reception unit 66, a storage / reading unit 68, and a storage unit 69.

  The storage unit 69 stores the identification information (for example, the MAC address) of the display device 6, the content to be output transmitted from the content management server 8, and the like.

  The storage / reading unit 68 is realized mainly by the processing of the CPU 601, stores various data in the storage unit 69, and reads various data from the storage unit 69.

  The transmission / reception unit 61 is realized by the processing of the CPU 601 and the wireless LAN communication unit 606 shown in FIG. 11, and transmits / receives various data to / from the content management server 8 through wireless communication. The transmission / reception unit 61 transmits and receives data via Ethernet (registered trademark) when the display device 6 includes an Ethernet (registered trademark) card and the network 893 is a wired LAN.

  The display control unit 62 is realized by the processing of the CPU 601 and performs control for displaying various images and characters on the display 608.

  The operation input receiving unit 64 is realized by the processing of the CPU 601 and the input unit 609, and receives various selections or inputs from the user of the display device 6.

  The content acquisition request generation unit 65 generates a content acquisition request for acquiring content to be displayed on the display device 6 from the content management server 8 based on a user operation via the input unit 609. The content acquisition request includes the name of the output target content to be displayed and output and the identification information of the display device 6.

  The content acquisition request response receiving unit 66 receives a content acquisition request response that is a response from the content management server 8 to the content acquisition request. When the content acquisition request response includes the file body of the output target content or the storage destination address of the output target content file, the content acquisition request response accepting unit 66 displays the output target content file as a display control unit. 62 is displayed. On the other hand, when the content acquisition request response receiving unit 66 includes an error message indicating that the output target content cannot be acquired in the content acquisition request response, the content acquisition request response receiving unit 66 displays the error message via the display control unit 62 and the process ends. To do.

[Operation procedure]
An operation procedure of the content management system 1 in the embodiment of the present invention will be described. As for the operation of the content management system 1, the content management server 8 determines the location information management operation for managing the location information of the communication terminal 5 by the location information management server 9 and whether or not the content to be displayed on the display device 6 can be output. It is roughly divided into content output availability determination operations.

[Location information management operation]
FIG. 20 is an example of a sequence diagram illustrating an operation procedure in which the content management system 1 according to the embodiment of the present invention manages the location information of the communication terminal 5.

  S11: The distribution control unit 20 of the distribution device 3 transmits the position information acquired from the storage unit 29 continuously or intermittently by IMES or the like.

  S12: The reception control unit 40 of the communication terminal 5 receives the position information transmitted from the distribution device 3 by the position information reception process performed periodically (for example, at a cycle of 60 seconds). When the communication terminal 5 includes an acceleration sensor, the position information may be received upon detection of a change in acceleration.

  S13: The reception control unit 40 stores the received position information in the storage unit 49.

  S14: The wireless communication control unit 50 of the communication terminal 5 sends a position information update request including the identification information acquired from the storage unit 59 (for example, the MAC address of the communication terminal 5) and the position information stored in the storage unit 49. Send to. The position information update request is a request for newly registering or updating the position information of the communication terminal 5 managed by the position information management server 9.

  S15: The transmission / reception unit 31 of the wireless communication control unit 30 of the distribution device 3 transfers the location information update request to the gateway device 70 using a communication method compliant with the IEEE 802.15.4 standard.

  S16: When the transmission / reception unit 71 of the wireless communication control unit 70 of the gateway device 7 receives the location information update request transmitted from the distribution device 3, the conversion unit 82 of the wired communication control unit 80 conforms to the IEEE 802.15.4 standard. The communication method is converted into a communication method that conforms to the IEEE 802.3 standard that is compatible with the network 892.

  S17: The transmission / reception unit 81 of the wired communication control unit 80 transfers the location information update request to the location information management server 9. The transmission / reception unit 91 of the location information management server 9 receives the location information update request from the gateway device 7.

  S18: The storage / reading unit 98 of the location information management server 9 associates the identification information of the communication terminal 5 stored in advance in the storage unit 99 with the identification information included in the received location information update request. The storage unit 991 stores the position information of the communication terminal 5.

  In addition, the management operation | movement of the positional information of the communication terminal 5 of step S11-S18 mentioned above is performed independently of the content output availability determination operation demonstrated below.

  With the above operation procedure, the content management system 1 according to the embodiment of the present invention can manage the location information of the communication terminal 5 by the location information management server 6. Further, since the communication terminal 5 is attached or built in the display device 6, the position information of the display device 6 can be managed by managing the position information of the communication terminal 5.

[Content output availability judgment operation]
FIG. 21 is an example of a sequence diagram showing an operation procedure for determining whether or not content can be output by the content management system 1 according to the embodiment of the present invention. In the example of FIG. 21, the communication terminal 5 is attached to the display device 6, and the position information of the communication terminal 5 is managed by the position information management server 9.

  S21: The user of the display device 6 operates the input unit 609 to specify the content to be output in order to cause the display device 6 to display and output the content. Here, for example, the designated output target content name is “A.ppt”. The operation input reception unit 64 notifies the content acquisition request generation unit 65 of the content name (A.ppt) input by the user.

  S22: The content acquisition request generator 65 of the display device 6 generates a content acquisition request for acquiring the output target content from the content management server 8. The content acquisition request includes the output target content name (A.ppt) and the identification information of the display device 6 (for example, “000074f0229a”). The content name is set to be unique in the content management system 1. The content name is set based on a content name naming standard that is determined in advance by an administrator, a user, or the like. The content acquisition request may include a “content ID” stored in the content information storage unit 8491 of the content management server 8. In this case, the user of the display device 6 knows in advance the “content ID” of the content to be displayed. By including the “content ID” in the content acquisition request, the content to be output can be uniquely identified when a plurality of identical content names exist in the content management server 8.

  S23: The content acquisition request generation unit 65 transmits a content acquisition request via the transmission / reception unit 61 through the network 893 (access point 4). The content acquisition request includes the output target content name “A.ppt” and the identification information “000074f0229a” of the display device 6.

  The content acquisition request receiving unit 842 of the content management server 9 receives a content acquisition request transmitted from the display device 6 via the transmission / reception unit 841. Then, the content acquisition request receiving unit 842 notifies the terminal position information acquisition unit 844 of the identification information (000007f0229a) of the display device 6 included in the content acquisition request. In addition, the content acquisition request reception unit 842 notifies the output availability determination unit 845 of the output target content name (A.ppt) included in the content acquisition request.

  S24: The terminal position information acquisition unit 844 transfers from the display device related information storage unit 8493 to the display device 6 based on the identification information (000074f0229a) of the display device 6 included in the content acquisition request notified from the content acquisition request reception unit 842. The identification information (communication terminal identification information) of the corresponding (attached) communication terminal 5 is acquired. Here, if the information stored in the display device related information storage unit 8493 is, for example, the information shown in FIG. 18, the identification information of the communication terminal 5 corresponding to the identification information “000074f0229a” of the display device 6 is “002673abcd01”. Become.

  S25: The terminal location information acquisition unit 844 transmits a communication terminal location information acquisition request for acquiring the location information of the communication terminal 5 that acquired the identification information (002673abcd01) to the location information management server 9 via the transmission / reception unit 841. To do. The communication terminal position information acquisition request includes the identification information “002673abcd01” of the communication terminal 5.

  The terminal location information response unit 95 of the location information management server 9 receives a communication terminal location information acquisition request from the content management server 8 via the transmission / reception unit 91.

  S26: The terminal location information response unit 95 reads the location information of the communication terminal 5 from the location information storage unit 991 based on the identification information (002673abcd01) of the communication terminal 5 included in the communication terminal location information acquisition request. Here, if the information stored in the location information storage unit 991 is, for example, the information shown in FIG. 14, the location information corresponding to the identification information “002673abcd01” of the communication terminal 5 is the location information of the management ID “1”. . From the example of FIG. 14, this positional information is latitude “35.50426”, longitude “139.662051”, “1” floor, “Y” building. Note that the terminal location information response unit 95, when the difference between the reception time of the communication terminal location information acquisition request and the reception date and time stored in the location information storage unit 991 is a predetermined time (for example, 30 minutes) or more, The communication terminal position information acquisition request response may not include the position information of the communication terminal 5 or may include information indicating that position information cannot be acquired.

  S27: The terminal location information response unit 95 generates a communication terminal location information acquisition request response including the location information of the communication terminal 5, and transmits the response to the content management server 8 via the transmission / reception unit 91.

  When the location information acquisition unit 844 of the content management server 8 receives the location information of the communication terminal 5 via the transmission / reception unit 841, the terminal location information acquisition unit 844 notifies the output availability determination unit 845 of the received location information of the communication terminal 5.

  S <b> 28: The output availability determination unit 845 reads the area security level from the area information storage unit 8492 based on the location information of the communication terminal 5 notified from the terminal location information acquisition unit 844. Here, if the information stored in the area information storage unit 8492 is, for example, the information shown in FIG. 17, the position information (latitude “35.50426”, longitude “139” of the communication terminal 5 acquired from the position information management server 9 is used. .62051 ”,“ 1 ”floor,“ Y ”building) are“ Y ”building corresponding to the area ID“ 1 ”, the south end“ 35.50403 ”, the north end“ 35.50454 ”, the west end“ “139.62003” and the eastern end “139.62102”. Accordingly, the communication terminal 5 is located in the conference room A (area name), and the area security level of the area is “5”.

  S29: The output permission determination unit 845 reads the content security level from the content information storage unit 8491 based on the output target content name (A.ppt) included in the content acquisition request notified from the content acquisition request reception unit 842. Here, if the information stored in the content information storage unit 8491 is, for example, the information illustrated in FIG. 16, the content security level corresponding to the output target content name “A.ppt” is “5”.

  S30: The output availability determination unit 845 compares the area security level (5) read in step S28 with the content security level (5) read in step S29, and the content name (A.ppt) on the display device 6 is compared. Whether to output is determined. The determination of whether or not output is possible is processed such that content display output is possible if the area security level is equal to or higher than the content security level, and content display output is not possible otherwise. In this example, for example, content “A.ppt” whose content security level requiring high confidentiality such as confidentiality is “5” has an area security level “5” limited to use only by employees, for example. Display output on the display device 6 used in the conference room A becomes possible. On the other hand, for example, at a place such as a reception lobby where the area security level is low (level “1”), the area security level is not equal to or higher than the content security level (5). Then, the output availability determination unit 845 notifies the content acquisition request response unit 843 of the output availability determination result.

  S31: The content acquisition request response unit 843 generates a content acquisition request response based on the output propriety determination result notified from the output propriety determination unit 845. When the determination result can be output, the content acquisition request response unit 843 generates the output target content file from the data storage destination address stored in the content data storage unit 8494 based on the name of the output target content included in the content acquisition request. Is read. Then, the content acquisition request response unit 843 generates a content acquisition request response including (attached) the read output target content file. On the other hand, when the determination result cannot be output, the content acquisition request response unit 843 generates a content acquisition request response including an error message indicating that the content cannot be acquired. In this example, since the determination result in step S30 can be output, a content acquisition request response including a file with the content name “A.ppt” is generated. Instead of attaching the content file to the content acquisition request response, a data storage destination address where the file with the content name “A.ppt” is stored may be included.

  S32: The content acquisition request response unit 843 transmits the generated content acquisition request response to the display device 6 via the transmission / reception unit 841.

  The content acquisition request response accepting unit 66 of the display device 6 accepts a content acquisition request response that is a response from the content management server 8 via the transmission / reception unit 61.

  S33: If the content acquisition request response includes the file body of the output target content or the storage destination address of the output target content file in the content acquisition request response, the content acquisition request response reception unit 66 displays the output target content file as a display control unit. 62 is displayed. On the other hand, the content acquisition request response receiving unit 66 displays a screen as shown in FIG. 22 via the display control unit 62 when the content acquisition request response includes an error message indicating that the output target content cannot be acquired. The process is terminated. FIG. 22 is a diagram illustrating an example of a message displayed and output on the display device 6 when the determination result according to the embodiment of the present invention cannot be output. As shown in FIG. 22, a message indicating that the content cannot be output and an error code (reason for error) are displayed and output. In the example of the sequence diagram of FIG. 21, since the content acquisition request response includes a file with the content name “A.ppt”, the file with “A.ppt” is displayed and output.

  Through the above-described operation procedure, the content management system 1 according to the embodiment of the present invention uses the position information of the communication terminal 5 attached to the display device 6 and uses the location information of the content on the display device 6 according to the security level of the area. Display output can be controlled.

[flowchart]
A process for determining whether or not the content management server 8 can output data according to the embodiment of the present invention will be described.

  FIG. 23 is a flowchart showing an example of a processing procedure for determining whether or not the content management server 8 can output according to the embodiment of the present invention.

  S101: The content management server 8 receives a content acquisition request including the output target content name and the identification information of the display device 6 from the display device 6.

  S102: The terminal position information acquisition unit 844 identifies the communication terminal 5 corresponding to (attached to) the display device 6 from the display device related information storage unit 8493 based on the identification information of the display device 6 included in the content acquisition request. (Communication terminal identification information) is acquired.

  S103: The terminal location information acquisition unit 844 transmits a communication terminal location information acquisition request including the identification information of the communication terminal 5 to the location information management server 9.

  S104: The terminal location information response unit 95 determines whether or not the location information of the communication terminal 5 has been acquired from the location information management server 9. Specifically, it is determined whether or not the response signal for the communication terminal position information acquisition request includes the position information of the communication terminal 5. The case where the position information of the communication terminal 5 is not included in the response signal means that the position information of the communication terminal 5 corresponding to the position information storage unit 991 of the position information management server 9 is not stored or the position information is Even if stored, the corresponding reception date / time is old, and position information is not set in the response signal. Further, for example, even if there is a problem in the communication environment from the content management server 8 to the location information management server 9, the location information of the communication terminal 5 cannot be acquired even when the content management server 8 detects a timeout of the communication terminal location information acquisition request. Applicable when

  When the position information of the communication terminal 5 can be acquired, the process of step S105 is executed.

  On the other hand, when the position information of the communication terminal 5 cannot be acquired, the process of step S107 is executed.

  S105: (In the case of YES in step S104), the output possibility determination unit 845 determines whether or not the area stored in the area information storage unit 8492 includes the acquired position information of the communication terminal 5.

  When the acquired position information of the communication terminal 5 is included in the area stored in the area information storage unit 8492, the process of step S106 is executed.

  On the other hand, when the acquired position information of the communication terminal 5 is not included in the area stored in the area information storage unit 8492, the process of step S107 is executed.

  S106: (In the case of YES in step S105), output permission determination unit 845 reads the area security level from the area stored in area information storage unit 8492 including the acquired location information of communication terminal 5.

  S107: (In the case of NO in step S104 or S105), the output availability determination unit 845 sets the area security level to “1”. The area security level “1” has low confidentiality, and is set, for example, in a public space where an unspecified number of persons exist. Thus, when the position information of the communication terminal 5 is unknown, for example, it is limited to outputting contents of a security level that is output at a place where an unspecified person exists and does not cause any trouble. Note that the value of the area security level set in step S107 is not limited to “1” and can be set arbitrarily. In addition to the information stored in the area information storage unit 8492 (5 area security levels), for example, information on an area category for classifying an area into a public space or in-house is provided, and the position information of the communication terminal 5 is unknown. In such a case, the display of content may not be allowed as a uniform public space treatment.

  S108: (After the processing of step 106 or S107) The output permission determination unit 845 determines whether or not the output target content name included in the content acquisition request exists in the content information storage unit 8491.

  When the output target content name included in the content acquisition request does not exist in the content information storage unit 8491, the process of step S113 is executed.

  On the other hand, when the output target content name included in the content acquisition request exists in the content information storage unit 8491, the process of step S109 is executed.

  S109: (In the case of YES in step S108), output permission determination unit 845 reads the content security level corresponding to the output target content name from content information storage unit 8493.

  S110: The output permission determination unit 845 executes determination processing for comparing the area security level and the content security level.

  Specifically, if the area security level is equal to or higher than the content security level, it is determined that output is possible, and the process of step S111 is executed.

  On the other hand, if the area security level is less than the content security level, it is determined that output is not possible, and the process of step S112 is executed.

  The output enable / disable determining unit 845 notifies the content acquisition request response unit 843 of the output enable / disable determination result.

  S111: (In the case of YES in S110), the content acquisition request response unit 843 generates a content acquisition request response based on the determination result of output permission notified from the output permission determination unit 845. In this case, the content acquisition request response unit 843 reads the output target content file from the data storage destination address stored in the content data storage unit 8494 based on the name of the output target content included in the content acquisition request. Then, the content acquisition request response unit 843 generates a content acquisition request response including the read output target content file, and transmits the content acquisition request response to the display device 6.

  S112: (In the case of NO in S110), the content acquisition request response unit 843 indicates an error message (security violation) indicating that the content cannot be acquired based on the determination result of the output disapproval notified from the output propriety determination unit 845. Is generated and transmitted to the display device 6.

  S113: (In the case of NO in step S108), the content acquisition request response unit 843 generates a content acquisition request response including an error message (no target content) indicating that there is no acquisition target content, and transmits the response to the display device 6. .

  As described above, according to the content management system 1 in the embodiment of the present invention, the content to be displayed and output on the display device 6 can be controlled based on the security level of the area and the security level of the content. As a result, it is possible to reduce the risk of information leakage in which highly confidential content is output at an inappropriate location.

  Also, under the management of the content management system 1, the content can be appropriately output based on the security level no matter where the display device 6 is used or the digital content is copied.

  Further, according to the content management system 1, even if there is a change in the layout of the area or a change in the security level of the area, for example, the operation at the changed security level of the area can be performed only by changing the setting in the content management server 8. Become. Therefore, it is possible for an administrator or the like to efficiently control content output based on the state of the area without taking time and cost due to physical changes of the device (change of installation location, additional installation of the device, etc.).

  Further, according to the content management system 1, it is possible to flexibly set the area security level for each area obtained by partitioning the same room with partitions, without the influence of radio wave interference or the like.

<< First Modification >>
In the first modification of the embodiment of the present invention, content to be displayed and output on the display device 6 is a storage device of the display device 6 or an external recording medium directly inserted into the display device 6 (for example, an SD card or a USB memory). Alternatively, it is an operation when it is determined whether or not the content can be output when it is stored in a PC directly connected to the display device 6 by an RGB cable or the like.

[Function configuration (variation)]
FIG. 24 is a diagram illustrating an example of functional configurations of the content management server 8 and the display device 6 according to the first modification of the embodiment of the present invention. In FIG. 24, the same functions and functions as those in the functional configuration diagram (FIG. 15) of the content management server 8 and the display device 6 in the embodiment of the present invention are given the same names and descriptions thereof are omitted.

<Display device>
As shown in FIG. 24, the display device 6 in the first modified example further includes an output availability confirmation request generation unit 65a, an output availability confirmation request response reception unit 66a, and a content data storage unit 69a.

  Upon receiving a content display output operation via the input unit 609 of the user of the display device 6, the output permission confirmation request generation unit 65 a generates an output permission confirmation request for inquiring whether the content management server 8 can output the content to be displayed and output. To do. The output permission confirmation request includes the name of the output target content to be displayed and output and the identification information of the display device 6.

  The output propriety acquisition request response accepting unit 66 accepts an output propriety confirmation request response that is a response from the content management server 8 to the output propriety confirmation request. Then, the output permission confirmation request response accepting unit 66 displays and outputs the content or ends the display output processing based on the output permission determination result included in the output permission confirmation request response.

  The content data storage unit 69a stores a file body of content to be displayed and output on the display device 6. The content file may be stored in a recording medium 604 such as a flash memory, or may be stored in a PC or the like connected to the display device 6.

<Content management server>
As shown in FIG. 24, the content management server 8 in the first modified example further includes an output permission confirmation request receiving unit 842a and an output permission confirmation request responding unit 843a. Unlike the example of FIG. 15, the content management server 8 of the modified example (FIG. 24) does not have the content data storage unit 8494.

  The output permission confirmation request receiving unit 842a receives the output permission confirmation request transmitted from the display device 6. The output permission confirmation request receiving unit 842a notifies the terminal position information acquisition unit 844 of the identification information of the display device 6 included in the output permission confirmation request. In addition, the content acquisition request reception unit 842 notifies the output availability determination unit 845 of the name of the output target content included in the content acquisition request.

  The output propriety confirmation request response unit 843a generates an output propriety confirmation request response including the output propriety determination result notified from the output propriety determination unit 845. The output propriety confirmation request response unit 843a transmits the generated output propriety confirmation request response to the display device 6 via the transmission / reception unit.

[Operation procedure (first modification)]
FIG. 25 is an example of a sequence diagram illustrating an operation procedure for determining whether or not content output is possible in the content management system 1 according to the first modification of the embodiment of the present invention. Note that, in FIG. 25, the same processing steps as those in FIG. 21 showing the operation procedure in the embodiment of the present invention are given the same step numbers, and description thereof is omitted.

  When the user of the display device 6 operates the input unit 609 to display and output the content (S41), the storage unit / reading unit 68 reads the content file stored in the content data storage unit 69a (S42).

  When the content file is read, the output permission confirmation request generating unit 65a generates an output permission confirmation request for inquiring the content management server 8 about whether the read content can be output (S43). The output permission confirmation request includes the output target content name and the identification information of the display device 6.

  The output permission confirmation request generation unit 65a transmits an output permission confirmation request via the transmission / reception unit 61 via the network 893 (access point 4) (S44). The output permission confirmation request accepting unit 842a of the content management server 9 accepts an output permission confirmation request transmitted from the display device 6 via the transmission / reception unit 841. The subsequent steps S24 to S30 are the same as those in the example of FIG.

  When the output propriety is determined (S30), the output propriety confirmation request response unit 843a generates an output propriety confirmation request response including the output propriety determination result notified from the output propriety determination unit 845 (S45).

  Then, the output availability confirmation request response unit 843a transmits the generated content acquisition request response to the display device 6 via the transmission / reception unit 841 (S46). The output availability confirmation request response accepting unit 66 of the display device 6 accepts an output availability confirmation request response via the transmission / reception unit 61.

  The output propriety confirmation request response receiving unit 66a executes processing based on the output propriety determination result included in the output propriety confirmation request response (S47). If the determination result can be output, the content display output process is continued. On the other hand, if the determination result cannot be output, information indicating that the output of the content cannot be displayed is displayed and output, and the content display output process is terminated.

  With the above operation procedure, the content management system 1 in the first modification example is based on the security level of the area and the security level of the content, even when the content file is held on the display device 6 side. The display output of content can be controlled.

<< Second Modification >>
In the second modification of the embodiment of the present invention, when the user of the display device 6 specifies the content to be displayed and output, the content security level is set, and the content security level is set based on the content security level set by the user. Whether output is possible is determined. That is, since the user determines the security level of the content, it is not necessary for the content management server 8 to manage the content and the content security level in association with each other.

  FIG. 26 is an example of a sequence diagram illustrating an operation procedure for determining whether or not content output is possible in the content management system 1 according to the second modification of the embodiment of the present invention. In FIG. 26, the same steps as those in FIG. 21 showing the operation procedure in the embodiment of the present invention are given the same step numbers, and description thereof is omitted.

  First, the user of the display device 6 operates the input unit 609 to specify the content to be output in order to cause the display device 6 to display and output the content, and the content of the output target content is displayed on the content security specification screen shown in FIG. A security level is designated (S51).

  FIG. 27 is a diagram showing an example of a content security level designation screen in the second modification example of the embodiment of the present invention. As shown in FIG. 27, the user of the display device 6 has five levels of content security levels such as “level 1 (can be disclosed to the public)” and “level 2 (can be disclosed to business partners)”. Can be specified from the level. When the “OK” soft key displayed on the screen is pressed, the next content acquisition request generation process is executed.

  Returning to FIG.

  Next, the content acquisition request generation unit 65 of the display device 6 generates a content acquisition request including the output target content name, the identification information of the display device 6, and the specified content security level (S52). Then, the content acquisition request generation unit 65 transmits a content acquisition request to the content management server 8 via the transmission / reception unit 61 via the network 893 (access point 4).

  The processing after the next step S24 in the second modified example is the same except that FIG. 21 and step S29 are not provided. In the second modification, the content security level transmitted from the display device 6 is used in the content output permission determination process (S30), so the content security level read process (S29) as in the embodiment of the present invention. Is no longer necessary. Therefore, in the second modification, the content management server 8 does not need to include the content information storage unit 8491.

  As described above, the content management system 1 according to the second modification can control the display output of content based on the security level of the content designated by the user of the display device 6 and the security level of the area.

  Note that the content management system 1 in the second modification can be applied to the first modification.

<< Other modifications >>
In the embodiment of the present invention, the location information management server 9 and the content management server 8 are different devices. For example, the content management server 8 manages the location information of the communication terminal 5 included in the location information management server 9. May have a function (see FIG. 13).

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Modifications and changes are possible.

DESCRIPTION OF SYMBOLS 1 Content management system 3 Distribution apparatus 5 Communication terminal 6 Display apparatus 7 Gateway apparatus 8 Content management server 9 Location information management server 40 Reception control part 50 Wireless communication control part 65 Content acquisition request generation part 65a Output availability confirmation request generation part 66 Content acquisition Request response reception unit 66a Output availability confirmation request response reception unit 842 Content acquisition request reception unit 842a Output availability confirmation request reception unit 843 Content acquisition request response unit 843a Output availability confirmation request response unit 844 Terminal position information acquisition unit 845 Output availability determination unit 8491 Content information storage unit 8492 Area information storage unit 8493 Display device related information storage unit 8494 Content data storage unit 991 Position information storage unit

JP 2010-188537

Claims (10)

A content management system having a display device to which a communication terminal that transmits and receives position information of the communication terminal is attached, and a content management server that performs output control of content to be output to the display device,
The display device
Content acquisition request means for requesting the content management server to acquire specific content;
The content management server
Upon receiving a request for acquisition of the content from the display device, position information acquisition means for acquiring the position information of the communication terminal;
A content management system comprising: output permission determination means for determining whether the content can be output based on an area corresponding to the acquired position information. A content management system having a display device to which a communication terminal that transmits and receives position information of the communication terminal is attached, and a content management server that performs output control of content to be output to the display device,
The display device
When receiving an operation for displaying a specific content on the display device, the content management server has an output availability confirmation means for inquiring whether the content can be output on the display device.
The content management server
When receiving the output permission inquiry from the display device, position information acquisition means for acquiring the position information of the communication terminal;
A content management system comprising: output permission determination means for determining whether the content can be output based on an area corresponding to the acquired position information. The content management server
Area information storage means for storing an area security level that defines whether to output the content corresponding to the area;
Content information storage means for storing a content security level that defines whether to output the content corresponding to the content;
The output permission determination means includes
The content management system according to claim 1, wherein the area security level of the area corresponding to the acquired position information is compared with the content security level of the content to determine whether the content can be output. A content management system having a display device to which a communication terminal that transmits and receives position information of the communication terminal is attached, and a content management server that performs output control of content to be output to the display device,
The display device
A content acquisition request means for requesting the content management server to acquire the content together with a content security level that defines whether or not specific content can be output on the display device.
The content management server
Upon receiving a request for acquisition of the content from the display device, position information acquisition means for acquiring the position information of the communication terminal;
A content management system comprising: an output propriety determination unit that determines whether the content can be output based on an area corresponding to the acquired position information and the content security level. The content management server
Response means for transmitting a response including a result of output permission / prohibition of the content determined by the output permission determination means to the display device;
The display device
The content management system according to any one of claims 1 to 4, wherein the content is output based on the result of the output permission / inhibition included in the response.   The position information of the communication terminal is position information distributed from a distribution apparatus that distributes position information corresponding to a position where the own device is installed, which is closest to the communication terminal. The content management system according to item.   The content management system according to claim 6, wherein the position information distributed from the distribution device is position information distributed using a ground complementary signal. A content management server that performs output control of content to be output to a display device to which a communication terminal that transmits and receives positional information of the communication terminal is attached,
When receiving a request for acquisition of specific content from the display device, position information acquisition means for acquiring the position information of the communication terminal;
A content management server comprising: an output availability determination unit that determines whether the content can be output based on an area corresponding to the acquired position information. The content management server
Area information storage means for storing an area security level that defines whether to output the content corresponding to the area;
Content information storage means for storing a content security level that defines whether to output the content corresponding to the content;
The output permission determination means includes
The content management system according to claim 8, wherein the area security level of the area corresponding to the acquired position information is compared with the content security level of the content to determine whether the content can be output. A content management program executed in a content management server that performs output control of content to be output to a display device to which a communication terminal that transmits and receives position information of the communication terminal is attached,
The content management server;
Position information acquisition means for acquiring the position information of the communication terminal upon receiving a request for acquisition of specific content from the display device;
A content management program that functions as an output availability determination unit that determines whether the content can be output based on an area corresponding to the acquired position information.

Images