JP5693405B2 - Transmission device, communication system, and program - Google Patents

Description

  The present invention relates to a technique for restricting transmission of broadcast content.

  The act of receiving a TV program or the like (broadcast content) broadcasted by a broadcasting station with a tuner and transmitting it to another playback device is restricted except for the region targeted for the broadcast (referred to as the broadcast target region). There is a technology. Patent Document 1 describes a technique for permitting or restricting output of a video transmitted from an IP (Internet Protocol) broadcast server according to a region detected by an IP broadcast terminal.

JP 2008-288814 A

In the technology according to Patent Document 1, it is assumed that the broadcast target area of the broadcast content is previously grasped on the IP broadcast server side. For this reason, for example, assuming that each user tries to install and use this IP broadcast server at home, the user needs to input the broadcast target area to which the installation location belongs. .
Therefore, the present invention aims to save the user from setting the broadcast target area when transmission of the broadcast content is restricted outside the broadcast target area of the broadcast content.

In order to achieve the above object, the present invention provides a receiving means for receiving a broadcast wave transmitted from a broadcasting station, and transmitting the broadcast wave that can be received by the receiving means at a place where the receiving means is installed. Specific means for identifying a combination of one or a plurality of broadcast stations, a plurality of broadcast target areas divided in advance, and one or a plurality of broadcasts determined to be broadcast to each of the broadcast target areas The broadcast target area associated with the combination whose similarity with the combination of the broadcasting stations specified by the specifying means is equal to or greater than a threshold is acquired from the storage means that stores the combination of the stations in association with each other. a first region acquisition means for, from a reproduction terminal for reproducing the content represented by the broadcast waves, a position obtaining means repeatedly obtains the position information indicating the position of the reproduction terminal Position indicated by the positional information acquired by the position acquiring means, determination means for determining whether or not belonging to a broadcast target area acquired by the first local acquisition unit, has acquired the position obtained wherein when the first determination that belong to the broadcast target area and said determining means transmits a content represented by the broadcast wave received by the receiving unit to the reproduction terminal, the position is the broadcast target area The determination means has made a second determination that the position does not belong to, and a period determined from the last time point at which the determination means determined that the acquired position belongs to the broadcast target area has passed. A transmission means for restricting the transmission of the content, and as the predetermined period, the broadcast target area in the case where the second determination is made and Providing a transmission apparatus and a sending means using length period corresponding to the position relationship between the position indicated by the location information.

  Further, a connection means for connecting to the Internet, and a global address assigned to the connection means, or an address for acquiring a global address assigned to a communication node on a route from the connection means to the Internet. Acquired by the address acquisition unit from the storage unit storing the acquisition unit, the plurality of global addresses, and the broadcast target area where the communication node to which each global address is assigned is installed. A second area acquisition means for acquiring the broadcast target area associated with the same global address as the global address, and the determination means when the broadcast area is not acquired by the first area acquisition means; In the second area acquisition means The transmission target region, may be the position indicated by the positional information acquired is determined whether belongs by the position obtaining unit.

  Further, the specifying unit may specify a combination of one or a plurality of broadcasting stations that broadcast the broadcast wave when the reception intensity of the broadcast wave by the receiving unit is equal to or greater than a threshold value.

  In addition, the present invention provides the above-described transmission apparatus, generation means for generating position information indicating the position of the terminal, position notification means for notifying the transmission apparatus of position information generated by the generation means, and the transmission There is provided a communication system including a playback terminal including playback means for playing back content transmitted from an apparatus.

In addition, the present invention specifies a combination of one or a plurality of broadcasting stations transmitting the broadcast wave that can be received by the receiving unit, using a computer having a receiving unit that receives a broadcast wave transmitted from a broadcasting station. Storing a plurality of broadcast target areas that are classified in advance and a combination of one or a plurality of broadcast stations that are determined to perform broadcasting in each of the broadcast target areas. First area acquisition means for acquiring the broadcast target area associated with a combination whose similarity with the combination of the broadcasting stations specified by the specifying means is greater than or equal to a threshold value from the storage means, and the broadcast from the reproduction terminal for reproducing the content represented by the waves, a position obtaining means for repeatedly acquiring position information indicating a position of the reproducing terminal, acquired by the position acquiring means The called position indicated by the location information belongs to the broadcast target area judgment means, is the acquired position obtained to determine whether it belongs to the broadcast target area acquired by the first region acquisition means when one of the determination and said determining means transmits a content represented by the broadcast wave received by the receiving unit to the reproduction terminal, a second determination that the position does not belong to the broadcast target area And when a predetermined period has elapsed since the last time when the determination unit determined that the acquired position belongs to the broadcast target area. Transmission means for restricting transmission according to a positional relationship between the broadcast target area and the position represented by the position information when the second determination is made as the predetermined period Providing program for functioning as a transmitting means using a period length.

  ADVANTAGE OF THE INVENTION According to this invention, when the transmission of the broadcast content with respect to a reproduction | regeneration terminal is restrict | limited outside the broadcast object area of the broadcast content, the user's effort for setting the broadcast object area can be saved.

1 is a diagram illustrating an overall configuration of a communication system according to an embodiment. It is a figure for demonstrating the way of thinking at the time of judging the transmission possibility of broadcast content. It is a figure which shows the hardware constitutions of a broadcast content transmission apparatus. It is a figure which shows the hardware constitutions of a mobile communication terminal. It is a figure which shows the hardware constitutions of a server apparatus. It is a figure which shows the content of the area specific database. It is a sequence chart which shows operation | movement of a communication system. It is a sequence chart which shows operation | movement of a communication system. It is a figure which shows an example of a broadcast station list and a global address. It is a block diagram which shows the functional structure of the control part of a broadcast content transmission apparatus. It is a block diagram which shows the functional structure of the control part of a mobile communication terminal. It is a block diagram which shows the functional structure of the control part of a server apparatus. It is a sequence chart which shows operation | movement of the communication system which concerns on a modification.

[Embodiment]
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing an overall configuration of a communication system 1 according to an embodiment of the present invention. The communication system 1 includes communication nodes such as a plurality of broadcast stations 2, a broadcast content transmission device 10, a mobile communication terminal 20, and a server device 30, and a communication line such as the Internet 3 and a mobile communication network 4 having a plurality of base stations 5. . Each broadcasting station 2 is a facility operated by a broadcasting company, and broadcasts programs such as news, dramas, and sports broadcasts, for example, by a digital terrestrial television broadcasting mechanism. That is, in detail, each broadcast station 2 transmits broadcast waves representing the audio and video of these programs. The broadcast content transmitting apparatus 10 and the mobile communication terminal 20 are used by the same user. Actually, in the communication system 1, the broadcast content transmitting apparatus 10 and the mobile communication terminal 20 are provided by the number of users who use them, but FIG. 1 shows only one of them. .

  The broadcast content transmitting apparatus 10 is a transmitting apparatus installed in each user's home, receives a broadcast wave transmitted from each broadcast station 2, and includes audio and video represented by the broadcast wave. Content (hereinafter referred to as “broadcast content”) is stored. Then, the broadcast content transmitting apparatus 10 transmits these broadcast contents to the mobile communication terminal 20 via the Internet 3 and the mobile communication network 4 as necessary. Therefore, when the user is at home, the user can reproduce and view the broadcast content stored in the broadcast content transmitting apparatus 10. When the user is outside the home, the user can transmit the broadcast content transmitting apparatus 10 to the mobile communication terminal. The broadcast content can be transmitted to the mobile station 20 and played back on the mobile communication terminal 20 for viewing.

  The mobile communication terminal 20 is a playback terminal such as a mobile phone or a smartphone, and performs wireless communication with a base station of the mobile communication network 4 to receive broadcast content transmitted by the broadcast content transmitting apparatus 10 and receive it. Reproduce. The server device 30 communicates with the broadcast content transmitting device 10 and the mobile communication terminal 20 via the Internet 3 to notify each broadcast target area where these communication nodes are installed. Here, the broadcast target area is a plurality of areas that are previously divided according to the provisions of the Broadcasting Law, and is a certain area that is recognized as being capable of receiving broadcasts of the same broadcast program at the same time. In order to comply with this rule, each broadcasting station 2 has its own station so that it can receive broadcast waves satisfactorily in any broadcast target area where the broadcasting station 2 is to broadcast. Broadcasting facilities are in place. On the other hand, each broadcasting station 2 is configured to prevent receiving broadcast waves from its own station as much as possible outside the broadcasting target area of its own station. This is because the fact that the broadcast station 2 broadcasts outside the broadcast target area of the own station interferes with the business of other broadcast stations 2 that are broadcasting outside the broadcast target area. In view of the significance of such a broadcast target area, the broadcast content transmitting apparatus 10 determines whether to transmit broadcast content to the mobile communication terminal 20 depending on which broadcast target area the mobile communication terminal 20 is in. It is like that. Details thereof will be described with reference to FIG.

  FIG. 2 is a diagram for explaining the concept when the broadcast content transmitting apparatus 10 determines whether or not to transmit broadcast content. In FIG. 2, broadcast target areas A1, A2, and A3 are different broadcast target areas, and a broadcast content transmitting apparatus 10 is located in the broadcast target area A1. In addition, the actual broadcast target area has a more complicated shape than that shown in this figure, but in order to make the explanation easier to understand, both areas are rectangular areas as shown in this figure. To do. When the mobile communication terminal 20 carried by the user of the own device is located in the same broadcast target area A1 as the own device, the broadcast content transmitting device 10 determines to transmit the broadcast content to the mobile communication terminal 20. On the other hand, when the mobile communication terminal 20 is located in different broadcast target areas A2 and A3, the broadcast content transmitting apparatus 10 determines not to transmit broadcast content to the mobile communication terminal 20. Since this broadcast content is received by the broadcast content transmitting apparatus 10 from a certain broadcasting station, in view of the significance of the broadcast target area described above, the broadcast content is viewed only in the broadcast target area A1 where the broadcast content transmitting apparatus 10 is located. Is allowed and viewing is not permitted in other areas. For this reason, the broadcast content transmitting apparatus 10 determines whether or not transmission is possible as described above, so that the broadcast content cannot be viewed in an area outside the broadcast target area A1.

  FIG. 3 is a diagram illustrating a hardware configuration of the broadcast content transmitting apparatus 10. The broadcast content transmitting apparatus 10 is configured as a computer including a control unit 110, a communication unit 120, an operation unit 130, a tuner unit 140, a storage unit 150, and an output unit 160. The control unit 110 includes an arithmetic device such as a CPU (Central Processing Unit) and a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory). The CPU controls the operation of each unit of the broadcast content transmitting apparatus 10 by executing a program stored in the ROM or the storage unit 150 using the RAM as a work area. The communication unit 120 is a connection unit connected to the Internet 3 and transmits / receives data to / from the mobile communication terminal 20 and the server device 30. The operation unit 130 includes operation elements such as a plurality of keys, and supplies an operation signal corresponding to a user operation to the control unit 110. The control unit 110 performs processing according to the operation signal. The tuner unit 140 has eight tuners connected to an antenna (not shown), and is a receiving unit that receives broadcast waves transmitted from each broadcast station 2. The tuner unit 140 demodulates audio data and video data from the received broadcast wave, and outputs these data (that is, broadcast content) to the storage unit 150 under the instruction of the control unit 110.

  The storage unit 150 is a nonvolatile storage unit such as a hard disk, and stores data and programs used by the control unit 110 for control. In addition, the storage unit 150 accumulates broadcast content output from the tuner unit 140. The storage capacity of the storage unit 150 is, for example, a capacity that can store one week of broadcast content of eight broadcasting stations 2 that is the same number as the tuner included in the tuner unit 140. Further, the storage unit 150 stores address information such as an IP (Internet Protocol) address or a URL (Uniform Resource Locator) of the server device 30 used when the broadcast content transmitting device 10 transmits and receives data to and from the server device 30. Yes. The output unit 160 is connected to a television receiver (not shown) installed at home, and outputs audio data and video data read from the storage unit 150 by the control unit 110 to the television receiver. The television receiver reproduces broadcast content based on these audio data and video data.

  FIG. 4 is a diagram illustrating a hardware configuration of the mobile communication terminal 20. The mobile communication terminal 20 is configured as a computer including a control unit 210, a communication unit 220, an operation unit 230, a display unit 240, a voice input / output unit 250, a positioning unit 260, and a storage unit 270. Yes. The control unit 210 includes an arithmetic device such as a CPU and a storage device such as a ROM and a RAM. The CPU controls the operation of each unit of the mobile communication terminal 20 by executing a program stored in the ROM or the storage unit 270 using the RAM as a work area. The communication unit 220 includes an antenna and a communication circuit, and performs wireless communication with the base station 5. The operation unit 230 includes operation elements such as a plurality of keys and touch sensors, and supplies an operation signal corresponding to a user operation to the control unit 210. The control unit 210 performs processing according to the operation signal. The display unit 240 includes a liquid crystal panel and a liquid crystal driving circuit, and displays an image in accordance with an instruction from the control unit 210. The voice input / output unit 250 includes a speaker, a microphone, a voice processing circuit, and the like, and performs voice input / output related to a call. The positioning unit 260 measures the position of the mobile communication terminal 20 using GPS (Global Positioning System) technology. The storage unit 270 is a nonvolatile storage unit such as a flash memory or a hard disk, and stores data and programs used by the control unit 210 for control.

  FIG. 5 is a diagram illustrating a hardware configuration of the server device 30. The server device 30 is configured as a computer including a control unit 310, a communication unit 320, and a storage unit 330. The control unit 310 includes an arithmetic device such as a CPU and a storage device such as a ROM and a RAM. The CPU controls the operation of each unit of the server device 30 by executing a program stored in the ROM or the storage unit 330 using the RAM as a work area. The communication unit 320 is connected to the Internet 3 and is a means for transmitting and receiving data via this. The storage unit 330 is a non-volatile storage unit such as a hard disk, and is a storage unit that stores data and programs used by the control unit 310 for control. In addition, the storage unit 330 includes identification information assigned to each broadcast target area, identification information assigned to a broadcasting station that can be viewed in the broadcast target area, latitude and longitude indicating the range of the broadcast target area, An area specifying database that associates global addresses assigned to communication nodes installed in the broadcast target area is stored. This area specifying database is used when the server device 30 specifies the broadcast target area where the broadcast content transmitting apparatus 10 or the mobile communication terminal 20 is located.

  FIG. 6 is a diagram illustrating an example of information included in the region specifying database. In the area specifying database, “broadcast station list”, “longitude and latitude”, and “global address” are associated with identification information of each “broadcast target area”. In the example of FIG. 6, six broadcast target areas represented by identification information A1 to A6 are shown in the “broadcast target area” column. In the column of “Broadcasting station list”, a combination of one or a plurality of broadcasting stations 2 determined to perform broadcasting for each broadcasting target area is a channel number that is identification information of each broadcasting station 2. Shown in the list. For example, in the broadcast target area A1, nine channels “27”, “26”, “25”, “22”, “21”, “24”, “23”, “20”, “28” are respectively provided. It is shown that the broadcast wave of the assigned broadcast station 2 can be received. In other words, in the broadcast target area A1, the programs broadcast by these nine broadcasting stations can be viewed. Hereinafter, the combination of these broadcast stations 2 included in the area specifying database as the “broadcast station list” is referred to as “first combination”.

  In the column of “latitude and longitude”, the latitude and longitude of the northwest end and the southeast end of each broadcast target area are shown. In addition, the “global address” column indicates a global address that should be allocated to a communication node installed in each broadcast target area. Here, the global address refers to an IP address uniquely assigned to a communication node connected to the Internet. Global address assignment is managed on a global scale, and in Japan it is assigned to each organization such as a provider by JPNIC (Japan Network Information Center). In addition, it is generally determined in which area the global address is assigned to a communication node. By utilizing this fact, in the region specifying database, a plurality of global addresses are associated with broadcast target regions including regions where communication nodes to which these global addresses are assigned are estimated to be installed. .

  Next, the operation in the communication system 1 will be described with reference to FIGS. 7A, 7B, and 8. FIG. 7A and 7B are sequence charts showing a procedure of processing when broadcast content is transmitted in the communication system 1, and the processing shown in FIG. 7B is performed after the processing shown in FIG. 7A. FIG. 8 is a diagram showing a broadcast station list (FIG. 8A) and a global address (FIG. 8B) that the broadcast content transmitting apparatus 10 notifies the server apparatus 30 in this procedure. In the following description of operations, the main components of the operations performed by the broadcast content transmitting apparatus 10, the mobile communication terminal 20, or the server apparatus 30 are the respective control units 110, 210, and 310.

  In the procedure shown in FIG. 7A, first, the broadcast content transmitting apparatus 10 acquires the identification information of the broadcast target area in which the broadcast apparatus is installed (from step S10 to S90), and preparations for transmitting the broadcast content. (Steps S100 and S110) are performed. When the broadcast content transmitting apparatus 10 is installed and powered on, first, the broadcast content transmitting apparatus 10 transmits broadcast waves transmitted from a plurality of broadcast stations 2 while switching the reception frequency of the tuner section 140. (Steps S10 and S20). Then, the broadcast content transmitting apparatus 10 identifies a combination of one or a plurality of broadcast stations 2 that transmit broadcast waves that can be received by the tuner unit 140 at the place where the tuner unit 140 is installed, and identifies the specified broadcast station 2 (broadcast station list) is created (step S30). Hereinafter, this combination is referred to as a “second combination”. The receivable broadcast wave here is a broadcast wave in which the intensity of the radio wave received by the antenna of the tuner unit 140 is equal to or greater than a threshold value. This reception intensity is obtained by measuring the reception level of each frequency (that is, each broadcast wave) received by the antenna connected to the tuner unit 140. For example, if the reception level is equal to or higher than a certain threshold value, it can be said that the reception state is normal. Include in At that time, the tuner unit 140 of the broadcast content transmitting apparatus 10 has eight tuners, and therefore can determine up to eight broadcast stations 2 that can receive broadcast waves simultaneously. Broadcast content transmitting apparatus 10 notifies server apparatus 30 of the created broadcast station list (step S40). Thus, the server device 30 is notified of the second combination (that is, the combination of the broadcast stations 2 that are transmitting broadcast waves that can be received by the tuner unit 140). Here, it is assumed that the broadcast content transmitting apparatus 10 notifies the server apparatus 30 of the broadcast station list shown in FIG.

  The server device 30 can receive the first combination (that is, each broadcast target region) that matches the broadcast list (that is, the second combination) notified from the broadcast content transmitting device 10 in the region specifying database. It is investigated whether or not there is a combination of broadcasting stations 2 (step S45). And the server apparatus 30 transmits the result of the investigation to the broadcast content transmitting apparatus 10 (step S50). Specifically, when there is a first combination that matches the second combination, the server device 30 uses the identification information of the broadcast target area associated with the first combination as a result of this investigation. As shown in FIG. As described above, the broadcast content transmitting apparatus 10 acquires the identification information of the broadcast target area from the storage unit (the storage unit 330 in this example) that stores the broadcast target area and the second combination in association with each other.

  On the other hand, when there is no such broadcast target area, the server device 30 transmits a notification indicating that fact to the broadcast content transmitting device 10 as a result of the investigation (step S50). In step S45, even if the broadcast station list is actually notified from the broadcast content transmitting apparatus 10 located in one of the broadcast target areas, a matching broadcast station list may not be found. For example, if the broadcast wave that should be received in the broadcast target area cannot be received at a reception level that is higher than the above threshold due to the influence of the topography or the like, it is received because it is close to the next broadcast target area. This is a case where a broadcast wave that should not be received can be received. In these cases, the broadcast content transmitting apparatus 10 acquires the identification information of the broadcast target area where the own apparatus is located by the processing from steps S70 to S90 described later. In the example of FIGS. 6 and 8A, the channels “27”, “26”, “25”, “22”, “21”, “24”, “24”, “ Since the second combination represented by “23”, “20”, “28” matches the first combination in the broadcast target area A1, the server device 30 designates the broadcast target area A1 as the broadcast content transmitting apparatus 10. Send to. When the broadcast target area identification information is transmitted in step S55, the broadcast content transmitting apparatus 10 determines that the broadcast target area has been acquired (step S60; YES), and proceeds to the process of step S100 described later.

  On the other hand, when a notification indicating that there is no broadcast target area is transmitted in step S50, the broadcast content transmitting apparatus 10 determines that the broadcast target area has not been acquired (step S60; NO), and broadcasts using the global address. Processing to acquire identification information of the target area is performed. In many cases, the broadcast content transmitting apparatus 10 is connected to the Internet via an ISP (Internet Services Provider) facility that provides a connection service to the Internet. At that time, a Dynamic Host Configuration Protocol (DHCP) server operating in this facility is allocated to the DHCP server to a communication node such as a router to which the broadcast content transmitting apparatus 10 itself or the broadcast content transmitting apparatus 10 is connected. Assign one of the global addresses. When there are a plurality of DHCP servers, the ISP allocates a global address to the communication node by a DHCP server installed near the location where the communication node is located in order to reduce the load on the network. By such a mechanism, an area where a communication node to which a specific global address is assigned is generally determined, so that the area can be specified from the global address. Specifically, when a global address is assigned to the communication unit 120, the broadcast content transmitting apparatus 10 acquires the global address assigned to the communication unit 120.

  On the other hand, when a global address is not assigned to the communication unit 120, the broadcast content transmitting apparatus 10 is a communication node on the path from the communication unit 120 to the Internet 3 (for example, a router to which the own device is connected). Is acquired (step S70). If the global address acquired here is assigned to a communication node installed in an area where the communication unit 120 (that is, the broadcast content transmitting apparatus 10) is located, the global address is assigned to that communication node. There may be. Specifically, for example, the number of other communication nodes that pass from the communication unit 120 to the communication node is the smallest.

  Subsequently, the broadcast content transmitting apparatus 10 notifies the server apparatus 30 of the acquired global address (step S80). The server device 30 specifies the broadcast target area associated with the global address notified from the broadcast content transmitting apparatus 10 in the area specifying database (step S85), and identifies the identification information of the specified broadcast target area as the broadcast content transmitting apparatus. 10 (step S90). In the example of FIGS. 6 and 8B, since the transmitted global address “61.205.aaa.1” matches the global address associated with the broadcast target area A1, the server device 30 The broadcast target area A1 is specified and transmitted to the broadcast content transmitting apparatus 10. The broadcast content transmitting apparatus 10 acquires the broadcast area identification information transmitted from the server apparatus 30 in step S90, and uses the identification information in step S180 described later.

  Next, the broadcast content transmitting apparatus 10 receives broadcast waves transmitted from the receivable broadcast station 2, and accumulates broadcast contents represented by these broadcast waves in the storage unit 150 (step S100). For example, the broadcast content transmitting apparatus 10 continuously records programs of up to eight broadcast stations 2 using the eight tuners included in the tuner unit 140. That is, the broadcast content transmitting apparatus 10 records the programs of all the broadcast stations 2 when the number of broadcast stations 2 received by the tuner unit 140 is eight or less, and when it is nine or more, for example, The programs of the eight broadcasting stations 2 selected by the user are recorded. The broadcast content transmitting apparatus 10 accumulates recorded programs (that is, broadcast contents) for about one week in the storage unit 150, and deletes the oldest ones when the storage unit 150 becomes empty due to the accumulated broadcast contents. Thus, the broadcast content transmitting apparatus 10 maintains a state in which broadcast contents for the past week are accumulated. Then, the broadcast content transmitting apparatus 10 supplies information for designating the stored broadcast content (hereinafter referred to as “program designation information”), for example, periodically or in response to a request from the mobile communication terminal 20. (Step S110). The program designation information here is a program name of broadcast content, broadcast station identification information (channel), start time and end time, and the like, for example, extracted from EPG (Electronic Program Guide). .

  Subsequently, the mobile communication terminal 20 requests broadcast content, acquires identification information of the broadcast target area where the mobile communication terminal 20 is located, and notifies the broadcast content transmitting apparatus 10 (from steps S120 to S170 in FIG. 7B). ). This process starts when the mobile communication terminal 20 displays the program designation information transmitted in step S110 on the display unit 240 in response to a user operation on the operation unit 230 (step S120). When the user designates the program name of the broadcast content to be viewed using the operation unit 230 (step S125; YES), the process proceeds to step S130. The mobile communication terminal 20 repeats the process of step S125 until an operation for designating the broadcast content is performed (that is, while step S125 is NO). In step S <b> 130, the mobile communication terminal 20 measures its own position by the positioning unit 260. Since the positioning unit 260 uses GPS technology for position measurement as described above, the position may not be measured indoors or underground, for example. The mobile communication terminal 20 determines whether or not the position has been measured in step S130 (step S140). If it is determined that the position has not been measured (NO), the processes of steps S130 and S140 are repeated until measurement is performed. If it is determined in step S140 that the position has been measured (YES), the mobile communication terminal 20 notifies the server device 30 of the measured position (step S150). The server device 30 identifies a broadcast target area stored in the storage unit 330 that includes the position notified in step S150, and transmits identification information of the broadcast target area to the mobile communication terminal 20 ( Step S160). Then, the mobile communication terminal 20 requests broadcast content designated by the user, extracts the channel on which the broadcast content was broadcast and its time (start time and end time) from the above program designation information, and together with these The broadcast content transmitting apparatus 10 is notified of the acquired broadcast area identification information (step S170).

  Next, a process in which the broadcast content transmitting apparatus 10 transmits broadcast content to the mobile communication terminal 20 or a process for limiting the transmission thereof (steps S180 to S220 in FIG. 7) will be described. The broadcast content transmitting apparatus 10 determines whether the broadcast target area identification information notified in step S160 matches the broadcast target area identification information transmitted from the server apparatus 30 in step S50 or S90. (Step S180). If it is determined that they match (step S180; YES), the broadcast content transmitting apparatus 10 uses the broadcast content stored in step S100 to store the content stored in the channel and time notified together with the request. 20 (step S190). The mobile communication terminal 20 reproduces the broadcast content transmitted from the broadcast content transmitting apparatus 10 in step S190 (step S200). Specifically, the mobile communication terminal 20 displays the video included in the broadcast content on the display unit 240 and outputs the audio included in the broadcast content from the audio input / output unit 250. Transmission and reproduction in steps S190 and S200 are performed simultaneously in parallel, and are based on a so-called streaming method. In this case, the broadcast content to be reproduced is not stored in the storage unit 270 of the mobile communication terminal 20. On the other hand, if the broadcast content transmitting apparatus 10 determines that there is no match (NO) in step S180, the broadcast content transmitting apparatus 10 performs the process of step S210. In step S210, the broadcast content transmitting apparatus 10 notifies the mobile communication terminal 20 that the requested broadcast content cannot be transmitted. In addition, although the process of step S120-S170 mentioned above is normally performed after the broadcast content transmission apparatus 10 starts accumulation | storage of the broadcast content in step S100, strictly speaking, the broadcast target acquired in this process is performed. If the process of notifying the broadcast content transmitting apparatus 10 of the region (step S170) is performed after step S100, it may be performed anytime.

  FIG. 9 is a block diagram illustrating functions realized by the control unit 110 of the broadcast content transmitting apparatus 10 executing a program. The control unit 110 functions as a specifying unit 111, a first region acquisition unit 112, an address acquisition unit 113, a second region acquisition unit 114, a position acquisition unit 115, a determination unit 116, and a transmission unit 117. In step S30 of FIG. 7A, the identifying unit 111 sets a combination of a plurality of broadcasting stations (the above-described second combination) transmitting broadcast waves that can be received by the tuner unit 140 at the place where the tuner unit 140 is installed. Identify. The identifying unit 111 supplies the identified second combination to the first area obtaining unit 112. The first area acquisition unit 112 acquires identification information of a broadcast target area where the broadcast content transmitting apparatus 10 is installed based on the supplied second combination. Specifically, the first area acquisition unit 112 creates a broadcast station list representing the second combination and notifies the server device 30 in step S40. In addition, the first area acquisition unit 112 is the second specified by the specifying unit 111 from the storage unit (storage unit 330) of the server device 30 that stores the broadcast target area and the second combination in association with each other. In step S50, identification information of the broadcast target area associated with the first combination that matches the combination is acquired.

  The first area acquisition unit 112 supplies the acquired broadcast area identification information to the determination unit 116. In addition, when a notification indicating that the broadcast target area identification information cannot be transmitted is transmitted from the server device 30 in step S50, the first area acquiring unit 112 supplies the fact to the address acquiring unit 113. If the address acquisition unit 113 is supplied from the first region acquisition unit 112 that the identification information of the broadcast target area cannot be transmitted, the address acquisition unit 113 performs the determination described in step S60 (in this case, the determination of NO). The process described in S70 is performed to obtain a global address. The address acquisition unit 113 supplies the acquired global address to the second region acquisition unit 114. The second area acquisition unit 114 notifies the server device 30 of the supplied global address by performing the process described in step S80. In addition, the second region acquisition unit 114 includes the global address acquired by the address acquisition unit 113 from the storage unit (storage unit 330) of the server device 30 that stores the global address and the broadcast target region in association with each other. In step S90, identification information of the broadcast target area associated with the same global address is acquired. The second area acquisition unit 114 supplies the acquired broadcast area identification information to the determination unit 116.

  The position acquisition unit 115 acquires the position information transmitted from the mobile communication terminal 20 in step S170 of FIG. 7A and supplies the position information to the determination unit 116. When the broadcast target area is supplied from the first area acquisition unit 112, the determination unit 116 determines whether or not the position represented by the position information supplied from the position acquisition unit 115 belongs to the broadcast target area. In the present embodiment, this position information is a broadcast target area where the mobile communication terminal 20 is located, and the determination unit 116 determines that the broadcast target area is supplied from the first area acquisition unit 112. Whether it belongs or not is determined as described above depending on whether or not it matches the region. In addition, when the broadcast area is not acquired by the first area acquisition unit 112, that is, when the identification information of the broadcast area is supplied from the second area acquisition unit 114, the determination unit 116 Processing similar to that performed when the identification information of the broadcast target area is supplied from the first area acquisition unit 112 is performed using the identification information of the area. The determination unit 116 supplies the determination result to the transmission unit 117. When the result of “belonging” is supplied, the transmission unit 117 transmits the broadcast content stored in the storage unit 150 to the mobile communication terminal 20 in step S190 of FIG. 7B, and is supplied with the result of “No”. In this case, transmission of broadcast content to the mobile communication terminal 20 is restricted. In the latter case, in detail, the transmitting unit 117 notifies the mobile communication terminal 20 that the broadcast content is not transmitted in step S210.

  FIG. 10 is a block diagram illustrating functions realized by the control unit 210 of the mobile communication terminal 20 executing a program. The control unit 210 functions as a generation unit 211, a position notification unit 212, and a playback unit 213. The generation unit 211 uses the position supplied from the positioning unit 260 to generate position information that represents the position of the terminal itself. Specifically, the generation unit 211 first causes the positioning unit 260 to measure the position in step S130 of FIG. 7B, and determines that the position is measured in step S140. Notice. And the production | generation part 211 will produce | generate the information showing this broadcast target area as position information, if the broadcast target area matched with this position is transmitted from the server apparatus 30 in step S160. The positioning unit 260 and the generation unit 211 cooperate as described above to function as means for generating position information. The generation unit 211 supplies the generated position information to the position notification unit 212. The position notification unit 212 notifies the supplied position information to the broadcast content transmitting apparatus 10 in step S170. The reproduction unit 213 reproduces the broadcast content transmitted by the transmission unit 117 of the broadcast content transmission apparatus 10 in step S200. Specifically, the playback unit 213 displays the video represented by the broadcast content on the display unit 240 and outputs audio to the audio input / output unit 250 so that the broadcast content can be viewed by the user.

  FIG. 11 is a block diagram illustrating functions realized by the control unit 310 of the server device 30 executing a program. The control unit 310 functions as a region survey unit 311, a region identification unit 312, and a region transmission unit 313. In step S45 of FIG. 7A, the area survey unit 311 uses the broadcast station list notified from the broadcast content transmitting apparatus 10 to check whether there is a broadcast target area stored in association with the list. The area survey unit 311 supplies the result of the survey described in the description of step S50 to the area transmission unit 313. The area specifying unit 312 uses the global address notified from the broadcast content transmitting apparatus 10 or the position information notified from the mobile communication terminal 20 to determine the broadcast target area stored in association with these in step S85 and It specifies in step S155 of FIG. 7B. The area specifying unit 312 supplies the identification information of the specified broadcast target area to the area transmitting unit 312. The regional transmission unit 313 transmits the result supplied from the regional survey unit 311 to the broadcast content transmission device 10 that is the notification source described above in step S50. In addition, the area transmission unit 313 receives the identification information of the broadcast target area supplied from the area specifying unit 312 with respect to the broadcast content transmission apparatus 10 or the mobile communication terminal 20 that is the notification source described above, respectively, step S90 and step S160. Send in.

  According to the above embodiment, when broadcasting content represented by a broadcast wave received in a certain broadcasting target area is transmitted to a transmission destination outside the broadcasting target area, the transmission can be restricted. Further, in that case, it is possible to save the user from the trouble of setting the broadcast target area where the own apparatus is located in the broadcast content transmitting apparatus 10. Also, the broadcast content transmitting apparatus 10 uses the tuner unit 140 used for receiving broadcast content to acquire the identification information of the broadcast target area. Therefore, the tuner unit only acquires the identification information of the broadcast target area. There is no need to provide a device other than 140. In addition, when the broadcast content transmitting apparatus 10 receives a broadcast wave that cannot be received originally (for example, a broadcast wave transmitted to an adjacent broadcast target area), if the reception intensity is less than the threshold, the broadcast content transmission apparatus 10 transmits the broadcast wave. A list of broadcasting stations that does not include the broadcasting station 2 is created. For this reason, the broadcast content transmitting apparatus 10 can create a more accurate broadcast station list than when creating a broadcast station list that includes all broadcast stations that have received a broadcast wave regardless of the reception intensity. As a result, the accuracy of the broadcast target area to be acquired can be further increased. Also, the broadcast content transmitting apparatus 10 obtains broadcast area identification information from the global address even when the reception intensity of the broadcast wave that should be received is low for some reason and an accurate broadcast station list cannot be obtained. can do. Thereby, the broadcast content transmitting apparatus 10 can acquire the identification information of the broadcast target area even when it is installed in a place where the reception state of the broadcast wave is bad.

[Modification]
The above-described embodiment is merely an example of the implementation of the present invention, and various modifications are possible as follows, and the following modifications can be combined as necessary.

(Modification 1)
When the control unit 210 of the mobile communication terminal 20 continuously performs the processing from step S120 to S200, the broadcast content transmitting apparatus 10 and the broadcast target area that are usually located in the same location are the same. There are times when the user does not agree because the user has moved out of the broadcasting target area on a business trip or the like. At that time, the control unit 210 may continuously notify the broadcast target area that is normally notified within a predetermined period.

  Specifically, the control unit 210 has a function of measuring time, and for example, measures the time that has elapsed since the broadcast content was transmitted in step S190 of FIG. 7B. When the control unit 210 notifies the broadcast target area in step S170, the broadcast target area is different from the broadcast target area notified last time and the measured time is less than a predetermined time. The broadcast target area notified last time is notified again. This is based on the idea that a user who is usually active in the broadcast target area may view the broadcast content broadcast in the broadcast target area outside the broadcast target area for a predetermined period. Is. In this case, after the transmission unit 117 of the control unit 110 starts transmitting broadcast content to the mobile communication terminal 20, the determination unit 116 of the control unit 110 determines that the position represented by the position information does not belong to the broadcast target area. Even if it is a case, transmission of broadcast content is not limited as long as a period determined from the latest point in time when the position represented by the position information is determined to belong to the broadcast target area by the determination unit 116 It will be. According to this modification, for a user who normally watches a program broadcast in a certain broadcast target area, even if it is outside the broadcast target area, In the meantime, you can watch the program that you normally watch.

(Modification 2)
In the first modification described above, the broadcast target area notified by the control unit 210 of the mobile communication terminal 20 is changed from that in the embodiment, but the process performed by the control unit 110 of the broadcast content transmitting apparatus 10 without changing this. May be changed. Specifically, even when the broadcast target areas do not match in step S180, the control unit 110 transmits the broadcast content if the time elapsed since the previous broadcast target area matches is less than the threshold.

  FIG. 12 is a sequence chart showing the operation of the communication system 1 according to this modification. Since the control unit 110 of the broadcast content transmitting apparatus 10 according to the present modification performs the same processes as those shown in FIGS. 7A and 7B until step S180, FIG. 12 shows the subsequent processes. If it is determined in step S180 that the broadcast target areas do not match (NO), control unit 110 determines whether the time elapsed since the previous broadcast target area matches is less than the threshold (step S310). . If it is determined that the value is less than the threshold (step S310; YES), the control unit 110 transmits the requested broadcast content to the mobile communication terminal 20 (step S320), and the control unit 210 of the mobile communication terminal 20 The transmitted broadcast content is reproduced (step S330). If it is determined in step S310 that the value is equal to or greater than the threshold (NO), the control unit 110 determines whether the broadcast content is currently being transmitted (step S340). If it is determined that transmission is in progress (step S340; YES), the control unit 110 stops transmission of the broadcast content (step S350). On the other hand, if it is determined that transmission is not being performed (step S340; NO), the control unit 110 ends the process as it is. Also in the present modification, the transmission unit 117 of the control unit 110 performs the same operation as described in the first modification. According to the present modification, as in the first modification, for a user who normally watches a program broadcast in a certain broadcast target area, even if it is outside the broadcast target area, for a predetermined period of time. Can watch the program that you normally watch.

(Modification 3)
In the first and second modification examples described above, the predetermined period is determined according to the relationship between the broadcast target areas acquired by the control unit 110 of the broadcast content transmitting apparatus 10 and the control unit 210 of the mobile communication terminal 20, respectively. The length may be changed. Even if it is outside the broadcasting target area, the period that the user is outside the broadcasting target area differs depending on whether it is a place where a day trip is possible or a place that requires several days including movement. This is based on the idea that the period is changed according to the length of the assumed period.

  For example, the control unit 110 or the control unit 210 may change the period depending on whether the area (for example, Kanto, Tohoku, etc.) including these broadcast target areas is the same or different. You may lengthen a period, so that distance becomes long. In addition, when the mobile communication terminal 20 is overseas, the control unit 110 or the control unit 210 may add a further determined period to the period to be changed as described above. In addition, the control unit 110 or the control unit 210 may set an upper limit of this period regardless of the distance between the broadcast target areas, and for example, does not transmit broadcast content in the case of overseas (that is, the period is set to 0). You may do it. In any case, the transmission unit 117 of the control unit 110 transmits the broadcast target area and its location in the case where the determination unit 116 determines that the position represented by the position information does not belong to the broadcast target area, as the predetermined period. A period having a length corresponding to the positional relationship with the position represented by the position information is used. The length of this period is set so that a person other than a user whose activity is in a certain broadcast area will not constantly view the broadcast content in that broadcast area according to the positional relationship here. It is desirable to be defined. According to this modification, the length of the fixed period in the above-described modifications 1 and 2 is set to the length required for this user (specifically, the period estimated to be outside the broadcast target area). Or a length adapted to the circumstances of the broadcasting station 2 side.

(Modification 4)
In the embodiment described above, the control unit 110 of the broadcast content transmitting apparatus 10 determines whether or not the broadcast target areas match only once when transmission of broadcast content is requested from the control unit 210 of the mobile communication terminal 20. However, while the broadcast content is being transmitted, it may be periodically determined whether or not the broadcast target areas match. In this case, the control unit 110, the control unit 210, and the control unit 310 of the server device 30 perform the steps after step S 120 in a state where the reproduction is continued after the control unit 210 starts reproducing the broadcast content in step S 200. Perform each process.

  Specifically, after transmission of broadcast content is started by the transmission unit 117 of the control unit 110, the control unit 210 repeatedly notifies the broadcast content transmission apparatus 10 of position information, and the position acquisition unit 115 of the control unit 110. Repeatedly acquires position information from the mobile communication terminal 20. When the control unit 210 periodically notifies the broadcast target area, the determination unit 116 of the control unit 110 determines whether or not the two broadcast target areas match each other. After the transmission unit 117 starts transmitting broadcast content to the mobile communication terminal 20, if the determination unit 116 determines that the position represented by the position information does not belong to the broadcast target area, the transmission unit 117 Restrict transmission. According to this modification, when a user who is viewing broadcast content using the mobile communication terminal 20 moves outside the broadcast target area while viewing the broadcast content, transmission of the broadcast content can be stopped. In other words, the broadcast target area acquired by the control unit 210 of a certain mobile communication terminal 20 is once matched with the broadcast target area acquired by the control unit 110, and the mobile communication terminal 20 is out of the broadcast target area. By moving to, it is possible to prevent the act of constantly watching broadcast content whose viewing place is limited to the broadcast target area outside the broadcast target area.

(Modification 5)
In the embodiment described above, the control unit 210 of the mobile communication terminal 20 has notified the broadcast target area to the control unit 110 of the broadcast content transmitting apparatus 10, but may notify the position measured in step S120 as it is. In this case, the control part 110 performs the process of step S180 shown in FIG. 7 as follows. That is, the control unit 110 determines whether or not the position notified from the control unit 210 is included in the broadcast target area represented by the identification information transmitted from the server device 30 in step S50 or S90. As described above, in the communication system 1, the control unit 210 of the mobile communication terminal 20 notifies the control unit 110 of the broadcast content transmitting apparatus 10 of position information indicating the position of the own terminal, and the control unit 110 controls the control unit 310. It may be determined whether or not the position represented by the position information belongs to the broadcast target area transmitted from. In this modification, the positioning unit 260 included in the mobile communication terminal 20 functions as a position acquisition unit that acquires position information. According to this modification, it is not necessary to perform the processing of steps S150, S155, and S160, and the processing load of the control unit 210 and the control unit 310 is larger than when the control unit 210 acquires the identification information of the broadcast target area. Can be lightened. Further, since there is no time for performing these processes, it is possible to shorten the time required for the broadcast content to be reproduced in step S200 after the user performs an operation for requesting the broadcast content in step S125.

(Modification 6)
In the modified example 5 described above, the control unit 110 of the broadcast content transmitting apparatus 10 includes the position notified from the mobile communication terminal 20 when included in the broadcast target area represented by the identification information transmitted from the server apparatus 30. Although it is determined that the position belongs to the broadcast target area, for example, when it is located within a specific distance from the boundary of the broadcast target area, the position of the mobile communication terminal 20 even outside the broadcast target area May be determined to belong to the broadcast target area. In other words, the control unit 110 determines whether “belongs” or “not” as described above based on another region determined according to the broadcast target region. The other area here is an area where transmission of broadcast content is permitted (hereinafter referred to as “transmission-permitted area”), and is determined in advance according to the request of each broadcasting station 2 that provides the broadcast content. That's fine. In this case, the storage unit 150 of the broadcast content transmitting apparatus 10 stores information indicating each broadcast target area and another transmission-permitted area predetermined according to the broadcast target area (for example, the northwest end of the transmission-permitted area and The latitude and longitude of the southeast end are stored in association with each other. Then, the control unit 110 includes the position notified from the mobile communication terminal 20 in the transmission permitted area stored in the storage unit 150 in association with the broadcast target area represented by the identification information transmitted from the server device 30. In this case, it is determined that the position belongs to the broadcast target area. In the communication system 1, a region different from the broadcast target region, for example, either the high seas or a foreign region may be defined as the transmission permission region. According to this modification, it is possible to determine an area where transmission of broadcast content is permitted without being strictly limited to the broadcast target area.

(Modification 7)
In the above-described embodiment, the broadcast station list of each broadcast target area is stored in the storage unit 330 of the server device 30, but may be stored in the storage unit 150 of the broadcast content transmission device 10. In this case, the control unit 110 of the broadcast content transmitting apparatus 10 refers to the storage unit 150 instead of notifying the control unit 310 of the server apparatus 30 of the broadcast station list in step S40 and is associated with this broadcast station list. The identification information of the broadcast target area is acquired. According to this modification, it is not necessary to perform the processes of steps S40 and S50, that is, exchange of data via the network, and the load on the network is lighter than when the server apparatus 30 stores the broadcast station list. can do. The above is the same for the control unit 110 as the control unit 210 of the mobile communication terminal 20. In this case, it is not necessary to exchange data via the network in steps S150 and S160.

(Modification 8)
The method of representing each broadcast target area is not limited to the method of representing the latitude and longitude of the northwest end and the southeast end as in the above-described embodiment. For example, the “latitude and longitude” stored in the area specifying database shown in FIG. 6 is divided into a plurality of rectangular areas, for example, a set of latitude and longitude at the boundary of the area, or a broadcast target area. You may make it show by the set of the latitude and longitude of the northwestern end and southeastern end of a rectangular area. In this case, when the latitude and longitude representing the position notified from the control unit 210 of the mobile communication terminal 20 are included in the broadcast target area represented by these sets, the control unit 310 of the server device 30 broadcasts the broadcast. The target area is transmitted to the control unit 210.

(Modification 9)
In the above-described embodiment, the positioning unit 260 measures the position of the mobile communication terminal 20 using the GPS technology, but is not limited thereto, and the position may be measured using another technology. For example, the positioning method performed by the positioning unit 260 may be a so-called base station positioning method in which the position is measured based on the position information of the base station 5 of the mobile communication network 4.

(Modification 10)
The tuner unit 140 has eight tuners in the above-described embodiment, but is not limited to this, and may have any number of tuners. The tuner unit 140 only needs to have at least one tuner, and it is desirable that the number of tuner units 140 be larger. In the broadcast content transmitting apparatus 10, as the tuner unit 140 has more tuners, the number of broadcast stations 2 that can be simultaneously determined when determining the broadcast stations 2 that can receive broadcast waves in step S30 increases. Can be shortened. Also, the more tuners the tuner unit 140 has, the more types of broadcast content that can be stored in the storage unit 150 of the broadcast content transmitting apparatus 10, and the choice of broadcast content that can be viewed by the user can be increased.

(Modification 11)
In the embodiment described above, the control unit 110 of the broadcast content transmitting apparatus 10 stores the broadcast content in the storage unit 150. However, the control unit 110 does not store the broadcast content in the storage unit 150. May be transmitted to the control unit 210 of the mobile communication terminal 20. In this case, in step S170, the control unit 210 notifies information (for example, a channel) indicating the broadcast station 2 that provides the requested broadcast content together with the request. Upon receiving this request, the control unit 110 does not store the broadcast content currently output from the tuner unit 140 based on the broadcast wave of the broadcast station 2 indicated by the notified information together without storing the content in the storage unit 150. The data is directly transmitted to the control unit 210 via 120. That is, this broadcast content has been broadcast since the request was made in step S170. According to this modification, the user can view a program currently being broadcast.

(Modification 12)
The control unit 310 of the server device 30 updates the information included in the region specifying database stored in the storage unit 330 with the broadcast station list and the global address notified from the control unit 110 of the broadcast content transmission device 10. You may make it do. For example, depending on the location where the broadcast content transmitting apparatus 10 is installed, a broadcast wave that should not be received in the broadcast target area including the location may be received. In this case, the broadcast station list to be notified does not match the broadcast station list associated with the determined broadcast target area. In this case, the controller 310 is further notified of the global address from the controller 110 (step S80 in FIG. 7). At this time, the control unit 310 stores the broadcast target area associated with the global address in the storage unit 330 so as to be included in the area specifying database in association with the broadcast station list that does not match. is there. In this way, if the broadcast content transmitting apparatus 10 is located in the vicinity of the place where the broadcast content transmitting apparatus 10 is installed, the broadcast station notified from the control unit 110 of the broadcast content transmitting apparatus 10 installed there. Identification information of the broadcast target area can be acquired from the list.

  Conversely, the control unit 310 may update the global address using the broadcast station list. For example, the control unit 110 acquires a global address and notifies the control unit 310 regardless of whether or not a broadcast target area is acquired from the broadcast station list. Then, the control unit 310 associates the global address notified from the control unit 110 that has notified the broadcast station list with respect to the broadcast target area associated with the broadcast station list, in association with the broadcast target area. It is stored in the storage unit 330 so as to be included in the specific database. At that time, if the global address is not already included in the area specifying database, it may be newly included, and if already included, it may be overwritten or double included. In addition, when the same global address is repeatedly notified to the same broadcast target area from one or a plurality of control units 110, it is not overwritten up to a predetermined number of times, and when the number exceeds that number, the correspondence is It may be overwritten when it is determined to be correct. According to the present modification, it is possible to improve the accuracy of the broadcast target area to be acquired in an area close to the boundary of the broadcast target area where broadcast waves other than those to be received in the broadcast target area are also received. become able to.

(Modification 13)
In the communication system 1, in the above-described embodiment, the broadcasting station 2 that transmits a broadcast wave that can be received by the tuner unit 140 and the broadcasting station 2 that is determined to broadcast to the broadcasting target area However, the communication system 1 does not exclude that this is one broadcasting station 2. Even if there is only one broadcasting station 2, the control unit 310 of the server device 30 includes the broadcasting station 2 included in the region specifying database and the broadcasting station list notified from the broadcasting content transmitting device 10. It is checked whether there is a broadcast station list that matches, and if this is found, the broadcast target area stored in association with the broadcast station list can be specified.

(Modification 14)
In the above-described embodiment, the control unit 110 of the broadcast content transmitting apparatus 10 specifies the broadcast target area when the first combination and the second combination match. However, the control unit 110 is not limited to such a complete match, If these similarities are greater than or equal to a threshold value, the broadcast target area may be specified as a match. For example, the control unit 110 indicates the proportion of the channels included in the first combination that match the channels included in the second combination (an index indicating the degree of similarity between these combinations). ). Then, when the degree of similarity is equal to or greater than the threshold, the control unit 110 obtains identification information of the broadcast target area associated with the first combination, assuming that these combinations match. For example, if the number of channels included in the first combination is “8”, the number of channels included in the second combination is “8”, and the threshold is 75%, the six broadcast stations match. And so on. The similarity referred to here may be, for example, the ratio of the channels matching the channels included in the first combination out of the channels included in the second combination, In short, it only has to represent the degree of similarity between the two combinations. According to this modification, it is possible to easily identify the broadcast target area even in an area where a broadcast wave that should originally be received in that area cannot be received due to the influence of topography or the like.

(Modification 15)
In the above-described embodiment, the control unit 110 of the broadcast content transmitting apparatus 10 does not transmit any requested broadcast content to the mobile communication terminal 20 when the broadcast target areas do not match in step S180 of FIG. 7B. However, other processing may be performed as a restriction on transmission. For example, the control unit 110 may make only the audio content the broadcast content to be transmitted to the mobile communication terminal 20, or may make only the video. Further, the control unit 110 may perform transmission after performing processing for reducing the resolution of the video of the broadcast content to be transmitted, or may perform transmission after performing processing for superimposing some image on the video. Further, as in Modifications 1 to 3 described above, the control unit 110 may continue transmission of broadcast content for a predetermined period. In short, if it is determined NO in step S180, control unit 110 may restrict the transmission of broadcast content to mobile communication terminal 20 in some form as compared to the transmission of broadcast content in step S190. Good.

(Modification 16)
The present invention includes not only a transmission apparatus (broadcast content transmission apparatus 10 is an example thereof), a playback terminal (mobile communication terminal 20 is an example thereof), a server apparatus, or a communication system including these, but also a method for realizing them. It can also be understood as a program for causing a computer to realize the functions shown in FIGS. Such a program may be provided in the form of a recording medium such as an optical disk storing the program, or may be provided in a form such that the program is downloaded to a computer via a network such as the Internet, and the program can be installed and used. Is something that can be done.

DESCRIPTION OF SYMBOLS 1 ... Communication system, 2 ... Broadcasting station, 3 ... Internet, 4 ... Mobile communication network, 5 ... Base station, 10 ... Broadcast content transmission apparatus, 20 ... Mobile communication terminal, 30 ... Server apparatus, 110, 210, 310 ... Control , 120, 220, 320 ... communication unit, 130, 230 ... operation unit, 140 ... tuner unit, 150, 270, 330 ... storage unit, 160 ... output unit, 240 ... display unit, 250 ... voice input / output unit, 260 ... Positioning part

Claims (5)

Receiving means for receiving a broadcast wave transmitted from a broadcasting station;
A specifying means for specifying a combination of one or a plurality of broadcasting stations transmitting the broadcast wave that can be received by the receiving means at a place where the receiving means is installed;
From a storage means that stores a plurality of broadcast target areas that are divided in advance and a combination of one or more broadcast stations that are determined to perform broadcasting for each of the broadcast target areas in association with each other, First area acquisition means for acquiring the broadcast target area associated with a combination whose similarity to the combination of the broadcasting stations specified by the specifying means is greater than or equal to a threshold;
Position acquisition means for repeatedly acquiring position information representing the position of the reproduction terminal from the reproduction terminal reproducing the content represented by the broadcast wave;
Determining means for determining whether or not the position represented by the position information acquired by the position acquiring means belongs to the broadcast target area acquired by the first area acquiring means;
When the acquired position has said determining means first determine that belong to the broadcast target area, which is acquired, it transmits a content represented by the broadcast wave received by the receiving unit to the reproduction terminal and, a second determination that the position does not belong to the broadcast target area to said determining means, and, time after most of the acquired position has said determining means determines that belong to the broadcast target area A transmission means for restricting transmission of the content when the predetermined period has elapsed, and as the predetermined period, the broadcast target area in the case where the second determination is made and the And a transmission unit that uses a period of a length according to the positional relationship with the position represented by the position information . A connection means for connecting to the Internet;
An address acquisition means for acquiring a global address assigned to the connection means, or a global address assigned to a communication node on a path from the connection means to the Internet;
Same as the global address acquired by the address acquisition unit from a storage unit that stores a plurality of global addresses in association with broadcast target areas where communication nodes to which the global addresses are assigned are installed. Second area acquisition means for acquiring the broadcast target area associated with a global address;
The determination means is acquired by the position acquisition means in the broadcast target area acquired by the second area acquisition means when the broadcast target area is not acquired by the first area acquisition means. The transmission apparatus according to claim 1, wherein it is determined whether or not the position represented by the position information belongs. The specifying means, when the reception intensity of the broadcast wave by the receiving means is equal to or greater than the threshold, to claim 1 or 2, characterized in that to identify the combinations of one or more broadcast stations broadcasting the broadcast wave The transmitting device described. The transmission device according to any one of claims 1 to 3 ,
Generating means for generating position information representing the position of the terminal; position notifying means for notifying the transmitting apparatus of the position information generated by the generating means; and reproducing means for reproducing the content transmitted from the transmitting apparatus A communication terminal. A computer having a receiving means for receiving a broadcast wave transmitted from a broadcasting station,
Specifying means for specifying a combination of one or a plurality of broadcasting stations transmitting the broadcast wave that can be received by the receiving means;
From a storage means that stores a plurality of broadcast target areas that are divided in advance and a combination of one or more broadcast stations that are determined to perform broadcasting for each of the broadcast target areas in association with each other, First area acquisition means for acquiring the broadcast target area associated with a combination whose similarity to the combination of the broadcasting stations specified by the specifying means is greater than or equal to a threshold;
Position acquisition means for repeatedly acquiring position information representing the position of the reproduction terminal from the reproduction terminal reproducing the content represented by the broadcast wave;
Determining means for determining whether or not the position represented by the position information acquired by the position acquiring means belongs to the broadcast target area acquired by the first area acquiring means;
When the acquired position has said determining means first determine that belong to the broadcast target area, which is acquired, it transmits a content represented by the broadcast wave received by the receiving unit to the reproduction terminal and, a second determination that the position does not belong to the broadcast target area to said determining means, and, time after most of the acquired position has said determining means determines that belong to the broadcast target area A transmission means for restricting transmission of the content when the predetermined period has elapsed, and as the predetermined period, the broadcast target area in the case where the second determination is made and the The program for functioning as a transmission means using the period of the length according to the positional relationship with the position which position information represents .

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