JP2012222808A - Content providing system, content display device, general vod server, and content providing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content providing system for retrieving a related VOD content based on broadcast station information of a program being viewed at present in one or more servers so as to provide the VOD content.SOLUTION: The content providing system includes: a content display device; a general VOD server; a moving image distribution server; and at least one individual VOD server. The content display device transmits a VOD retrieval request command including broadcast station information of the program being viewed at present to the general VOD server. The general VOD server determines whether or not the broadcast station information included in a VOD retrieval request command is included in moving image distribution server information, and transmits a VOD retrieval result consisting of VOD content specification data or URL information on the individual VOD server to the content display device. The content display device performs a display processing of a VOD content list display screen or a retransmission processing of the VOD retrieval request command in accordance with the received VOD retrieval result.

Description

  The present invention relates to a content providing system, a content display device, a general VOD server, and a content providing method. More specifically, the present invention can provide VOD (Video On Demand) content related to a program being viewed on the content display device. The present invention relates to a content providing system, a content display device, a general VOD server, and a content providing method.

  Conventionally, content related to program information being viewed is acquired by storing program information in the broadcast information database, specifying the feature amount of the program information being viewed from the broadcast information database, and searching the related information database. (For example, refer to Patent Document 1).

JP 2007-116718 A

  However, in the above-described conventional apparatus, since the content related to the program information being viewed is acquired from only the broadcast information database included in the server using the feature amount of the program information being viewed as a search keyword, it does not exist in the broadcast information database. There was a problem that content could not be extracted.

  The present invention is for solving the above problem, and searches for related VOD contents among one or more servers based on program information currently being viewed (broadcast station information which is a part of program information). It is an object of the present invention to provide a content providing system, a content display device, a general VOD server, and a content providing method that can be provided.

  The present invention relates to a content providing system including a content display device, a central VOD server, a moving image distribution server, and at least one individual VOD server.

  The content display device according to the present invention receives a display unit that displays a broadcast program, a storage unit that stores broadcast station information of the broadcast program being displayed, an input unit that inputs a VOD search request, and a VOD search request. When a VOD search request command including broadcast station information is generated and a VOD search result is received, a VOD content list display screen display process or a VOD search request command retransmission process is performed according to the VOD search result. A control unit to be executed, and a first communication unit that transmits a VOD search request command and receives a VOD search result. The control unit of the content display device executes display processing of the VOD content list display screen when the VOD content specific data is received as the VOD search result, and re-executes the VOD search request command when the URL information is received as the VOD search result. Execute the transmission process.

  The overall VOD server according to the present invention receives a VOD search request and transmits a VOD search result, and a video that stores VOD content information stored in the video distribution server as video distribution server information The distribution server information storage unit is compared with the broadcast station information included in the received VOD search request command and the broadcast station information included in the stored video distribution server information, and VOD content specific data or individual data is determined according to the comparison result. A URL analysis unit that outputs the URL information of the VOD server as a VOD search result to the second communication unit.

  The present invention also relates to a content providing method in a content providing system including a content display device, a central VOD server, a moving image distribution server, and at least one individual VOD server. The content providing method according to the present invention includes a step in which the content display device stores the broadcast station information of the broadcast program being displayed and the broadcast station information when the content display device accepts an input of a VOD search request. A step of generating a VOD search request command, a step of the content display device transmitting the generated VOD search request command to the central VOD server, a step of the central VOD server receiving the VOD search request command, and an overall VOD server Compares the broadcast station information included in the received VOD search request command with the broadcast station information included in the moving image distribution server information stored in the central VOD server, and determines the VOD content specific data or individual data according to the comparison result. A step of generating VOD server URL information as a VOD search result, and a general VO When the server transmits the VOD search result to the content display device, and the content display device receives the VOD search result, if the VOD search result is VOD content specific data, display processing of the VOD content list display screen is performed. And executing a retransmission process of the VOD search request command when the VOD search result is URL information.

  According to the present invention, a VOD search request including broadcast station information of a program being viewed is simply transmitted to a predetermined one server, and a server other than the predetermined one can easily relate to the program being viewed. VOD content can be searched.

The figure which shows the outline | summary of the content provision system which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the TV receiver which concerns on the same embodiment The block diagram which shows the structure of the integrated VOD server which concerns on the same embodiment The flowchart which shows the VOD content search process of the control part 102 of the TV receiver which concerns on the embodiment The flowchart which shows the VOD content search process of the URL analysis part 312 of the integrated VOD server which concerns on the embodiment The figure which shows an example of the moving image delivery server information which the moving image delivery server information storage part 313 of the integrated VOD server which concerns on the same embodiment memorize | stores. The figure which shows an example of the VOD content list display screen 700 which the display part 104 of the TV receiver which concerns on the embodiment displays

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing an outline of a content providing system according to Embodiment 1 of the present invention. The content providing system includes a content display device, a central VOD server 300, and an individual VOD server 1 (400) to an individual VOD server N (500). Here, in the present embodiment, the content display device will be described as the TV receiving device 100. The TV receiving device 100, the overall VOD server 300, and the individual VOD server 1 (400) to the individual VOD server N (500) are connected via a wired or wireless network, and the TV receiving device 100 is connected to the input device 200. In response to the VOD search request or the VOD transmission request, the central VOD server 300 and the individual VOD server 1 (400) to the individual VOD server N (500) are accessed to search for related VOD contents and display a VOD content list display screen. Play VOD content. The overall VOD server 300 is a server that the TV receiving device 100 accesses first when a VOD search request is input from the input device 200. The individual VOD server 1 (400) to the individual VOD server N (500) are servers that the TV receiver 100 can access after receiving the VOD search result transmitted from the overall VOD server 300.

  First, the TV receiver 100 which is a content display device will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of TV receiving apparatus 100 according to Embodiment 1 of the present invention. The TV receiving device 100 includes a receiving unit 101, a control unit 102, a storage unit 103, a display unit 104, a communication unit 105, and an input unit 106.

  The receiver 101 receives a digital broadcast signal received by an antenna (not shown), and the receiver 101 decodes the input digital broadcast signal to generate a transport stream. Then, the receiving unit 101 separates the transport stream into an AV stream and program information and outputs the separated AV stream and program information.

  The control unit 102 stores the program information input from the receiving unit 101 in the storage unit 103 and stores the program information currently being viewed. Here, the currently viewed program information includes a service ID, a network ID, and an event ID. The service ID is an identifier related to a channel (service) organized by the broadcaster and is included in an SDT (Service Description Table). The network ID is an identifier related to the provision path network, and is included in NIT (Network Information Table). The event ID is an identifier related to a program (event), and is included in an EIT (Event Information Table). Then, the control unit 102 decodes the AV stream input from the receiving unit 101, outputs the video signal to the display unit 104, and outputs the audio signal to an audio output unit (not shown).

  Further, when a VOD search request is input from the input unit 106, the control unit 102 generates a VOD search request command and outputs it to the communication unit 105. The VOD content search process will be described in detail later with reference to FIG.

  Further, when a VOD transmission request is input from the input unit 106, the control unit 102 generates a VOD transmission request command and outputs it to the communication unit 105. Further, the control unit 102 outputs the AV stream of the VOD content input from the communication unit 105 to the display unit 104 and an audio output unit (not shown) to reproduce the desired VOD content. Note that the control unit 102 can be realized by a dedicated processing circuit provided in the TV receiving device 100 or by executing a program loaded on a memory by a processor.

  The storage unit 103 stores program information input from the control unit 102 and program information currently being viewed. The storage unit 103 corresponds to a storage device such as a memory or a hard disk.

  The display unit 104 is a display device such as a plasma display or a liquid crystal display, and displays the video signal input from the control unit 102. Although the display unit 104 is a constituent element of the TV receiving device 100 in the present embodiment, the display unit 104 may be separated from the TV receiving device 100. In this case, the TV receiver 100 includes a display control unit (not shown), and the display control unit (not shown) outputs the video signal input from the control unit 102 to the external display unit 104. Become.

  The communication unit 105 transmits the VOD search request command or the VOD transmission request command input from the control unit 102 to either the overall VOD server 300 or the individual VOD server 1 (400) to the individual VOD server N (500). . Also, the VOD search result or the VOD content is received from any of the overall VOD server 300 or the individual VOD server 1 (400) to the individual VOD server N (500), and the AV stream of the received VOD content is controlled by the control unit 102. Output to.

  The input unit 106 receives a VOD search request or a VOD transmission request from the input device 200. In the present embodiment, a remote controller is assumed as the input device 200, a VOD search request is input by operating the VOD activation key 201, and a desired key is input by operating the cross key (not shown) and the enter key (not shown). Although a VOD transmission request for VOD content is input, the input device 200 may be a mobile phone terminal, a mobile terminal having a touch screen, or the like.

  Next, the overall VOD server 300 will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the overall VOD server 300 according to Embodiment 1 of the present invention. The overall VOD server 300 includes a content management server 310 and a moving image distribution server 320. The content management server 310 includes a communication unit 311, a URL analysis unit 312, and a moving image distribution server information storage unit 313. The moving image distribution server 320 includes a communication unit 321, a distribution control unit 322, and a VOD content storage unit 323. Including. First, each component of the content management server 310 will be described, and then each component of the moving image distribution server 320 will be described.

  The communication unit 311 of the content management server 310 receives the VOD search request command from the communication unit 105 of the TV receiver 100 and outputs it to the URL analysis unit 312. In addition, the communication unit 311 transmits the VOD search result output from the URL analysis unit 312 to the TV receiving device 100.

  The URL analysis unit 312 analyzes the input VOD search request command, and broadcast station information described in the VOD search request command (information on the broadcast station specified by the service ID and network ID) is stored in the moving image distribution server information. It is determined whether or not the video distribution server information stored in the unit 313 is present. If the URL analysis unit 312 determines that the broadcast station information described in the VOD search request command is in the video distribution server information, the URL analysis unit 312 receives the corresponding VOD content specific data as a VOD search result via the communication unit 311. The data is transmitted to the communication unit 104 of the device 100. On the other hand, if the URL analysis unit 312 determines that the broadcast station information described in the VOD search request command is not included in the video distribution server information, the URL of the individual VOD server described in the video distribution server information is used as the VOD search result. To the communication unit 104 of the TV receiver 100 via the communication unit 311. This process will be described in detail later with reference to FIG. The URL analysis unit 312 can be realized by a processor provided in the content management server 310 executing a program expanded on a memory.

  The moving image distribution server information storage unit 313 stores information on the VOD content stored in the VOD content storage unit 323 of the moving image distribution server 320 as moving image distribution server information. Here, as shown in FIG. 6, the moving image distribution server information 600 includes broadcast station information 601, VOD content information 602, and VOD content URL information 603. Broadcast station information 601 is broadcast station information specified by a service ID and a network ID. The VOD content information 602 is the title and detailed information of the VOD content. The VOD content URL information 603 is information indicating the URL from which the VOD content is acquired. The moving image distribution server information storage unit 313 can be realized by a storage device such as a memory or a hard disk included in the content management server 310.

  The communication unit 321 of the video distribution server 320 receives the VOD transmission request command from the communication unit 105 of the TV receiver 100 and outputs the VOD transmission request command to the distribution control unit 322. In addition, the communication unit 321 transmits the VOD content output from the distribution control unit 322 to the TV receiving device 100.

  The distribution control unit 322 analyzes the input VOD transmission request command, acquires the corresponding VOD content from the VOD content storage unit 323, divides it into predetermined packets, and communicates with the TV receiver 100 via the communication unit 311. The data is transmitted to the unit 104. The VOD content storage unit 323 stores VOD content. The URL analysis unit 312 can be realized by a processor provided in the moving image distribution server 320 executing a program expanded on a memory. Further, the VOD content storage unit 323 can be realized by a storage device such as a memory or a hard disk included in the moving image distribution server 320.

  Here, the VOD content search process executed by the control unit 102 of the TV receiving apparatus 100 will be described using the flowchart shown in FIG.

  The control unit 102 determines whether a VOD search request is input from the user via the input unit 106 (step S1401). If the control unit 102 determines that a VOD search request has not been input (“NO” in step S1401), the VOD content search process ends.

  On the other hand, if the control unit 102 determines that a VOD search request has been input (“YES” in step S1401), it generates a VOD search request command (step S1402). The VOD search request command is a command including broadcast station information currently being viewed (information on a broadcast station specified by a service ID and a network ID, which is a part of program information currently being viewed), An HTTP command such as “https: // URL of central VOD server 300 /? Service ID = (service ID of the currently viewed program) & network ID = (network ID of the currently viewed program)” is obtained.

  The control unit 102 transmits the VOD search request command generated in step S1403 to the communication unit 311 of the overall VOD server 300 via the communication unit 105 (step S1403). Then, it is determined whether or not a VOD search result is received from the communication unit 311 of the overall VOD server 300 (step S1404), and waits until the VOD search result is received (“NO” in step S1404).

  When determining that the VOD search result is received from the communication unit 311 of the overall VOD server 300 (“YES” in step S1404), the control unit 102 determines whether the VOD search result is VOD content specifying data or URL information. Is determined (step S1405). If the VOD search result is VOD content identification data (“YES” in step S1405), a VOD content list display screen is generated from the received VOD content identification data and displayed on the display unit 104 (step S1406). Here, the VOD content specifying data received as the VOD search result is data including broadcast station information 601, VOD content information 602, and URL information 603 of the VOD content, and the control unit 102 uses the VOD content specifying data. A VOD content list display screen is generated and displayed.

  On the other hand, when the VOD search result is not VOD content specific data, that is, when the VOD search result is URL information (“NO” in step S1405), the control unit 102 specifies the individual specified by the URL included in the VOD search result. A VOD search request command is transmitted to the VOD server (step S1407). The VOD search request command transmitted in step S1407 is “https: // URL of individual VOD server /? Service ID = (service ID of the currently viewed program)” & network ID = (network of the currently viewed program) ID) ". Then, the process waits until the VOD search result is received from the individual VOD server, and the processes in steps S1404, S1405, and S1407 are performed on the plurality of individual VOD servers until the VOD content specifying data is received as the VOD search result from the individual VOD server. The VOD content list display screen is displayed for the first time when VOD content specifying data is received as a VOD search result from an individual VOD server (steps S1404, S1405, S1406, and S1407).

  Next, the VOD content search process executed by the URL analysis unit 312 of the overall VOD server 300 will be described using the flowchart shown in FIG.

  The URL analysis unit 312 determines whether a VOD search request command has been received from the TV receiver 100 via the communication unit 311 (step S1501). If the URL analysis unit 312 determines that the VOD search request command has not been received (“NO” in step S1501), the VOD content search process ends.

  On the other hand, if the URL analysis unit 312 determines that the VOD search request command has been received (“YES” in step S1501), the broadcast station included in the video distribution server information 600 stored in the video distribution server information storage unit 313 The information 601 is compared with the broadcast station information included in the VOD search request command (step S1502). If the broadcast station information included in the VOD search request command is included in the broadcast station information 601 included in the moving image distribution server information 600 (“YES” in step S1503), the URL analysis unit 312 performs the corresponding broadcast. VOD content specifying data including station information 601, VOD content information 602, and URL information 603 of the VOD content is transmitted as a VOD search result to the communication unit 105 of the TV receiver 100 via the communication unit 311 (step S1504). For example, when the program currently being viewed on the TV receiver 100 is a program “A broadcast station”, the URL analysis unit 312 includes an HTTP command including the broadcast station information of “A broadcast station” as a VOD search request command. Is entered. The URL analysis unit 312 compares the broadcast station information included in the moving image distribution server information 600 with “A broadcast station”, and VOD content specifying data 604 (VOD content information “noon” associated with “A broadcast station”). News ”and VOD content URL information“ http: // XXXX ”, VOD content information“ continuous TV program ”and VOD content URL information“ http: // XXYY ”, VOD content information“ Cooking ”and URL information of VOD content “Http: // XXXXY”) is transmitted to the communication unit 105 of the TV receiver 100 as a VOD search result.

  On the other hand, if the broadcast station information included in the VOD search request command is not included in the broadcast station information 601 included in the moving image distribution server information 600 (“NO” in step S1503), the URL information 603 of the VOD content. Is transmitted as a VOD search result to the communication unit 105 of the TV receiver 100 via the communication unit 311 (step S1505). For example, when the program currently being viewed on the TV receiver 100 is a program “Z broadcast station”, the URL analysis unit 312 includes an HTTP command including the broadcast station information of “Z broadcast station” as a VOD search request command. Is entered. The URL analysis unit 312 compares the broadcast station information included in the video distribution server information 600 with “Z broadcast station”, and the video distribution server information 600 does not include “Z broadcast station” as the broadcast station information 601. Information 605 (URL information of individual VOD server “http: // URL of individual VOD server”) is transmitted to communication section 105 as a VOD search result. Here, in the video distribution server information 600, for example, a special ID is set in the broadcast station information 601 corresponding to the URL information 603 of the VOD content including the URL information of the individual VOD server. If it is determined that there is no, the process can be executed smoothly.

  By executing the VOD content search process shown in FIGS. 4 and 5 described above, the VOD content list display screen 700 shown in FIG. 7 is displayed on the display unit 104 of the TV receiver 100. The VOD content list display screen 700 is composed of a VOD content preview video 701 and VOD content information 702. By selecting and determining the preview video 701 or VOD content information 702 by operating the input device 200, a VOD content for a desired VOD content is displayed. Send request can be sent. Although the preview video 701 is displayed in the present embodiment, this may be a thumbnail image. These pieces of image information may be included in the VOD content specifying data transmitted as the VOD search result, or may be image information stored in advance in the storage unit 103 of the TV receiving device 100.

  When a VOD transmission request for a desired VOD content is input via the input unit 106 by a selection determination operation on the VOD content list display screen 700, the control unit 102 outputs the URL of the corresponding VOD content as a VOD transmission request command. Information is transmitted to the communication unit 321 of the moving image distribution server 320 via the communication unit 105. The distribution control unit 322 of the video distribution server 320 acquires the VOD content specified by the URL information from the VOD content storage unit 323 and transmits the VOD content to the communication unit 105 of the TV receiver 100 via the communication unit 321. Thereby, the control unit 102 can reproduce the VOD content received from the moving image distribution server 320 on the display unit 104 and the audio output unit (not shown).

  In the present embodiment, the VOD content program related to the program currently being viewed on the TV receiver 100 from any of the general VOD server 300 and the individual VOD server 1 (400) to the individual VOD server N (500). Although only information data is provided, a digital broadcast program related to a program currently being viewed may be provided in addition to the VOD content. In this way, it is possible to seamlessly search for broadcast content (real-time content or future content) received as a digital broadcast signal in addition to VOD content reproduced via the Internet.

  In this embodiment, a VOD search request is performed by operating the VOD activation key 201 of the input device 200. However, a dedicated key such as the VOD activation key 201 is not provided, and processing with an existing key (for example, a net key) is performed. When used together, for example, when an existing key is pressed while a program banner is displayed on a currently viewed program, a VOD search request is input to search for VOD content related to the currently viewed program. When the existing key is pressed when the program banner is not displayed on the currently viewed program, the process assigned in advance to the existing key (if the existing key is a net key, the currently viewed program is It is also possible to shift to display processing of a top screen that can search for all VOD contents regardless of the above.

  Furthermore, in the present embodiment, the moving image distribution server 320 is included in the integrated VOD server 300, but the moving image distribution server 320 may be arranged outside the integrated VOD server 300. The integrated VOD server 300 and the moving image distribution server 320 only need to be connected to each other via a wireless or wired network.

  Furthermore, although the case where the content display device is the TV receiving device 100 has been described as an example in the present embodiment, the content display device includes a processor such as a mobile phone, a smartphone, a tablet computer, a personal computer, a car navigation terminal, Any device including a memory, an input device, a display screen, an audio output unit, and a communication interface may be used. The function of the control unit 102 can be realized by the processor executing a program expanded on the memory.

  Furthermore, in the present embodiment, a content providing system including N individual VOD servers 1 (400) to N (500) is illustrated, but the number of individual VOD servers is arbitrarily one or more. .

  Furthermore, in this embodiment, the protocols of the VOD service provided by the overall VOD server 300 and the individual VOD server may be the same or different. In the content providing system according to the present invention, the overall VOD server accessed by the content display device first may return an access destination URL to another individual VOD server in response to a VOD search request from the content display device. Therefore, the VOD content can be searched regardless of the difference in the VOD protocol between the central VOD server 300 and the individual VOD server. Furthermore, in this embodiment, a VOD search request command including broadcast station information is transmitted from the TV receiver 100 to the overall VOD server 300 or the individual VOD server, but the program information being viewed including the broadcast station information is VOD. You may make it transmit by including in a search request command. Also, for example, information such as the genre of the program being viewed may be included in the VOD search request command. By including information such as the genre of the program being viewed in the VOD search request command, the VOD content specifying data can be filtered based on the information such as the genre, and more useful VOD content can be provided to the user.

  According to the present invention, the VOD content related to the program being viewed can be easily obtained by sending a VOD search request including the program information being viewed to the predetermined one server, even on a server other than the predetermined one server. Therefore, it is useful for all AV devices having a display device that can be connected to a plurality of VOD servers.

DESCRIPTION OF SYMBOLS 100 TV receiver 200 Input device 201 VOD starting key 300 Overall VOD server 310,410,510 Content management server 320,420,520 Movie distribution server 400 Individual VOD server
500 Individual VOD server N

Claims (5)

A content providing system comprising a content display device, a general VOD server, a video distribution server, and at least one individual VOD server,
The content display device includes:
A display for displaying broadcast programs;
A storage unit for storing broadcast station information of the broadcast program being displayed;
An input unit for inputting a VOD search request;
When the VOD search request is input, a VOD search request command including the broadcast station information is generated, and when a VOD search result is received, a display process of a VOD content list display screen according to the VOD search result or A control unit that executes a VOD search request command retransmission process;
A first communication unit that transmits the VOD search request command and receives the VOD search result,
The overall VOD server is
A second communication unit that receives the VOD search request and transmits the VOD search result;
A video distribution server information storage unit that stores information on the VOD content stored in the video distribution server as video distribution server information;
The broadcast station information included in the received VOD search request command is compared with the broadcast station information included in the stored video distribution server information, and VOD content specifying data or the URL of the individual VOD server is determined according to the comparison result. A URL analysis unit that outputs information to the second communication unit as the VOD search result,
The control unit of the content display device executes display processing of the VOD content list display screen when the VOD content specific data is received as the VOD search result, and the URL information is received as the VOD search result. A content providing system that executes a retransmission process of a VOD search request command.   The content providing system according to claim 1, wherein the broadcast station information includes a service ID that is an identifier related to a channel of the broadcast program, and a network ID that is an identifier related to a distribution channel network of the broadcast program. . The content display device in a content providing system comprising a content display device, a general VOD server, a video distribution server, and at least one individual VOD server,
A display for displaying broadcast programs;
A storage unit for storing broadcast station information of the broadcast program being displayed;
An input unit for inputting a VOD search request;
When the VOD search request is input, a VOD search request command including the broadcast station information is generated, and when the VOD search result is received, if the VOD search result is VOD content specific data, VOD content A control unit that executes display processing of a list display screen, and executes retransmission processing of a VOD search request command when the VOD search result is URL information;
A content display device comprising: a first communication unit that transmits the generated VOD search request command to the overall VOD server and receives the VOD search result from the overall VOD server. The overall VOD server in a content providing system comprising a content display device, an overall VOD server, a video distribution server, and at least one individual VOD server,
A second communication unit that receives a VOD search request including broadcast station information from the content display device and transmits a VOD search result;
A video distribution server information storage unit that stores information on the VOD content stored in the video distribution server as video distribution server information;
The broadcast station information included in the received VOD search request command is compared with the broadcast station information included in the stored video distribution server information, and the broadcast station information included in the VOD search request command is When included in the distribution server information, VOD content specifying data is output to the second communication unit as the VOD search result, and the broadcast station information included in the VOD search request command is included in the video distribution server information. And a URL analysis unit that outputs the URL information of the individual VOD server to the second communication unit as the VOD search result if not, the overall VOD server. A content providing method in a content providing system comprising a content display device, a general VOD server, a video distribution server, and at least one individual VOD server,
The content display device storing broadcast station information of the broadcast program being displayed;
Generating a VOD search request command including the broadcast station information when the content display device receives an input of a VOD search request;
The content display device transmitting the generated VOD search request command to the overall VOD server;
The central VOD server receiving the VOD search request command;
The overall VOD server compares the broadcast station information included in the received VOD search request command with the broadcast station information included in the video distribution server information stored in the overall VOD server, and according to the comparison result Generating VOD content specific data or URL information of the individual VOD server as the VOD search result;
The central VOD server transmitting the VOD search result to the content display device;
When the content display device receives the VOD search result, if the VOD search result is VOD content specific data, a display process of a VOD content list display screen is executed, and the VOD search result is URL information. And a step of executing retransmission processing of the VOD search request command.

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