JP2006074500A - Wireless lan broadcast system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a scrambled broadcast program easily viewed and listened. <P>SOLUTION: A cell phone device 10 transmits an area ID received by a base station 40 of a wireless LAN being presently in the range, and a telephone number of cell phone device 10 to a management server 30 when a TV button is pressed. A management server 30 chooses a viewing and listening key to a broadcast channel which a user makes a contract with and is viewable and audible inside a wireless area 40A of the wireless LAN based on the telephone number and the area ID. The management server 30 transmits a TV program information including the viewing and listening key and the broadcast channel to the cell phone device 10. The cell phone device 10 receives the TV program from the base station 40 of the wireless LAN when the broadcast channel included in the TV program information is selected by the user. Thereby, the TV program after the scramble is released with the viewing and listening key is displayed on the display screen of the cell phone device 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wireless LAN broadcast system.

In Patent Document 1 below, when the receiving terminal transmits information on the position of the own terminal and information on the broadcast type (VHF / UHF, BS / CS, etc.) that can be received by the own terminal to the server, A broadcast receiving system capable of acquiring a list from a server is disclosed. In this broadcast receiving system, when a desired program is selected from the acquired program list, the selected program is received by the receiving terminal.
JP 2002-101405 A

  By the way, in the broadcast receiving system described in Patent Document 1 described above, when the receiving terminal receives a scrambled broadcast program, the scramble cannot be released and the user cannot view the program. .

  Accordingly, an object of the present invention is to provide a wireless LAN broadcast system that allows a program being scrambled to be easily viewed in order to solve the above-described problems.

  A wireless LAN broadcasting system of the present invention includes a wireless LAN base station that broadcasts a TV program, a mobile communication terminal that can be connected to the wireless LAN base station, and a mobile communication network base that can be connected to the mobile communication terminal. A wireless LAN broadcasting system comprising a station and a management server that communicates with a mobile communication terminal via a base station of a mobile communication network, wherein the mobile communication terminal covers a wireless area covered by a wireless LAN base station An area ID receiving means for receiving an area ID for identifying the wireless area from the base station of the wireless LAN, and a terminal ID for identifying the received area ID and mobile communication terminal, Program information including an identification ID transmitting means for transmitting to the management server, a broadcast channel for broadcasting the television program, and a viewing key for viewing the television program is stored in the management server. Program information receiving means for receiving from the bus, program receiving means for receiving a TV program broadcast on the broadcast channel included in the program information received by the program information receiving means from the base station of the wireless LAN, and program receiving means A receiving means for decoding the received television program using the viewing key received by the program information receiving means, and the management server receives the identification ID received from the mobile communication terminal by receiving the area ID and the terminal ID. And a contract broadcast channel for which the user of the mobile communication terminal has subscribed to the viewing based on the terminal ID received by the ID receiving means and the terminal ID and the contract broadcast channel stored in advance in association with each other On the basis of the contract broadcast channel extraction means extracted from the broadcast channel storage means and the area ID received by the ID reception means, The broadcast channel that can be broadcast on the base station of the line LAN is extracted by the broadcast channel extracting means that extracts the broadcast channel from the broadcast channel storing means that stores the area ID and the broadcast channel in association with each other, and the contract broadcast channel extracting means. Based on the contracted broadcast channel and the broadcast channel extracted by the broadcast channel extracting means, the viewing key corresponding to the broadcast channel that can be viewed in the wireless area corresponding to the area ID by the user of the mobile communication terminal is broadcast in advance. Viewing key extraction means for extracting from the viewing key storage means for storing the key and the viewing key in association with each other, and program information including at least the viewing key extracted by the viewing key extraction means and the broadcast channel corresponding to the viewing key. Program information transmitting means for transmitting to a mobile communication terminal is provided.

  According to this invention, the mobile communication terminal transmits an area ID for identifying the wireless area of the wireless LAN in which the terminal is located and a terminal ID for identifying the terminal itself. The contract broadcast channel stored corresponding to the terminal ID and the broadcast channel stored corresponding to the area ID are respectively extracted by the management server that has received the broadcast ID, and the common broadcast channel among the extracted broadcast channels is extracted. The viewing key stored corresponding to the broadcast channel is extracted on the basis of. Therefore, the management server can extract a viewing key corresponding to a broadcast channel that can be broadcast in the wireless area of the wireless LAN where the user of the mobile communication terminal has a viewing contract and the mobile communication terminal is located. . The management server transmits program information including the viewing key and the broadcast channel corresponding to the viewing key, and is scrambled by the mobile communication terminal that has received the program information on the broadcast channel included in the program information. The received TV program is received, and the received TV program is decrypted using the viewing key. Therefore, the user of the mobile communication terminal can easily view the scrambled television program. Since the viewing key received by the mobile communication terminal from the management server is received via the base station of the mobile communication network, the viewing key can be distributed only to contract users who can use the mobile communication network. At the same time, it is possible to prevent leakage of the viewing key using the security of the mobile communication network.

  Also, in the wireless LAN broadcasting system of the present invention, when the mobile communication terminal receives a viewing key by the program information receiving means, a reception notification transmission for transmitting a reception notification indicating that the viewing key has been received to the management server. Preferably, the management server further includes billing means for executing a billing process for collecting the viewing key fee based on the reception notification transmitted by the mobile communication terminal.

  In this way, since the mobile communication terminal that has received the viewing key transmits a reception notification indicating that the viewing key has been received to the management server, the management server receives the viewing key at the mobile communication terminal. Can recognize the facts. In addition, since the management server performs a charging process for collecting the fee for the viewing key received by the mobile communication terminal, the fee for distributing the viewing key can be collected from the user of the mobile communication terminal. .

  In the wireless LAN broadcasting system of the present invention, a reception start signal indicating that the mobile communication terminal starts to receive a television program included in the program information received by the program information receiving means is transmitted to a wireless LAN base station. It is preferable to further include a reception start signal transmitting means for transmitting to the program receiving means for receiving a television program broadcast on the broadcast channel after the reception start signal transmitting means transmits the reception start signal. If it does in this way, it will become possible to receive the television program which a user desires based on a user's will.

  According to the wireless LAN broadcast system of the present invention, a program being scrambled can be easily viewed.

  Embodiments of a wireless LAN broadcast system according to the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram illustrating a configuration of a wireless LAN broadcast system 1 in the present embodiment. As shown in FIG. 1, a wireless LAN broadcast system 1 includes a mobile phone 10 (mobile communication terminal), a mobile communication network base station 20, a management server 30, a wireless LAN base station 40, and a content server 50. And have. The mobile phone 10 and the management server 30 exchange data with each other via the base station 20 of the mobile communication network. The cellular phone 10 and the content server 50 exchange data with each other via the wireless LAN base station 40.

  In the present embodiment, the mobile phone 10 is used as a specific example of the mobile communication terminal. However, the specific example of the mobile communication terminal is not limited to this, and for example, a simple mobile phone (PHS) or communication It may be a mobile communication terminal such as a portable information terminal (PDA) having a function.

  Next, each device shown in FIG. 1 will be described.

  The mobile phone 10 is a mobile communication terminal that performs wireless communication with the base stations 20 and 40 covering the wireless area where the mobile phone is located and receives a call service or a packet communication service. The mobile phone 10 has a television function and a decoder function.

  The management server 30 is a device that manages information related to broadcast channels that can be broadcast in each wireless LAN and broadcast channels that the user of each mobile phone 10 has subscribed to.

  The content server 50 is a device that manages a television program broadcast on a wireless LAN and distributes the television program via the wireless LAN base station 40.

  In the wireless LAN broadcast system 1 configured as described above, when the mobile phone 10 moves into the wireless LAN wireless area 40A and the TV button of the mobile phone 10 is pressed, the following processing is performed. First, the management server 30 transmits to the mobile phone 10 a television program that is broadcast in the wireless LAN and can be viewed on the mobile phone 10 and a viewing key for viewing the television program. Next, when the user selects a television program, the mobile phone 10 receives the television program distributed from the content server 50 via the wireless LAN base station 40. As a result, the program descrambled using the viewing key is displayed on the screen of the mobile phone 10.

  Here, the viewing key is a key for descrambling (decrypting) a scrambled (encrypted) broadcast TV program. Accordingly, a scrambled television program cannot be viewed without a viewing key corresponding to the television program.

  The viewing key may be prepared for each television program or for each time zone. That is, it is only necessary that the user who has received the television program and the viewing key in the wireless area 40A of the wireless LAN can view the television program being scrambled and broadcast on the spot in real time.

  Hereinafter, functional configurations of the mobile phone 10 and the management server 30 provided in the wireless LAN broadcast system 1 having such characteristics will be described in detail.

  First, the functional configuration of the mobile phone 10 will be described with reference to FIG. As shown in FIG. 2, the mobile phone 10 includes an area ID receiving unit 11 (area ID receiving unit), an identification ID transmitting unit 12 (identification ID transmitting unit), and a television program information receiving unit 13 (program information receiving unit). A TV program receiving unit 14 (program receiving unit), a viewing key reception notification transmitting unit 15 (reception notification transmitting unit), a reception start signal transmitting unit 16 (reception start signal transmitting unit), and a scramble releasing unit 17 (decoding). Means).

  The area ID receiving unit 11 receives an area ID for identifying a wireless area covered by the wireless LAN base station 40. This area ID is information distributed from time to time by the base station 40 of the wireless LAN. Therefore, the mobile phone 10 can acquire the area ID of the wireless area 40A in which the mobile phone 10 is currently located by moving into the wireless area 40A of the wireless LAN.

  The identification ID transmission unit 12 transmits the area ID received by the area ID reception unit 11 and the telephone number of the mobile phone 10 to the management server 30. In the present embodiment, the telephone number of the mobile phone 10 is transmitted. However, the present invention is not limited to this, and any identification ID (terminal ID) that can uniquely identify the mobile phone 10 on the management server 30 side may be used. That's fine.

  The TV program information receiving unit 13 receives TV program information transmitted from the management server 30. The TV program information includes, for example, names of broadcast channels such as “NHK” and “TBS” and viewing keys for TV programs broadcast on these broadcast channels.

  The TV program receiving unit 14 receives a TV program distributed by the content server 50 from the base station 40 of the wireless LAN.

  The viewing key reception notification transmitting unit 15 transmits a viewing key reception notification indicating that the viewing key has been received to the management server 30 when the television program information receiving unit 13 receives the television program information including the viewing key. Thereby, the management server 30 side can recognize the fact that the viewing key is received by the mobile phone 10.

  The reception start signal transmission unit 16 transmits a reception start signal to the base station 40 of the wireless LAN. The reception start signal is a signal that is transmitted when a television program included in the television program information is selected by the user, and is transmitted when reception of the television program is started. Therefore, the above-described television program receiving unit 14 receives the television program after the reception start signal transmitting unit 16 transmits the reception start signal.

  The scramble canceling unit 17 cancels the scramble of the TV program received by the TV program receiving unit 14. More specifically, the descrambling unit 17 uses the viewing key received by the television program information receiving unit 13 to unscramble the television program.

  Next, the functional configuration of the management server 30 will be described with reference to FIG. As shown in FIG. 3, the management server 30 includes an identification ID receiving unit 31 (identification ID receiving unit), a contract broadcast channel extraction unit 32 (contract broadcast channel extraction unit), and a broadcast channel extraction unit 33 (broadcast channel extraction unit). ), A viewing key extracting unit 34 (viewing key extracting unit), a television program information transmitting unit 35 (program information transmitting unit), and a charging unit 36 (charging unit).

  The management server 30 also includes a contract broadcast channel database 3A (contract broadcast channel storage means), a broadcast channel database 3B (broadcast channel storage means), and a viewing key database 3C (viewing key storage means). The contract broadcast channel database 3 </ b> A stores information related to the broadcast channel with which the user who owns the mobile phone 10 has a viewing contract. Here, the data structure of the contract broadcast channel database 3A will be described with reference to FIG. The contract broadcast channel database 3A has, for example, telephone numbers and contract broadcast channels as data items. The telephone number stores an ID for uniquely specifying the mobile phone 10 such as “090222223333”. In the contract broadcast channel, for example, the name of the broadcast channel with which the user has subscribed to viewing, such as “NHK” or “TBS”, is stored.

  The broadcast channel database 3B stores information regarding broadcast channels that can be broadcast in the wireless area 40A of the wireless LAN. Here, the data structure of the broadcast channel database 3B will be described with reference to FIG. The broadcast channel database 3B has, for example, an area ID and a broadcast channel as data items. In the area ID, for example, “0001”, an ID for specifying a wireless area covered by the wireless LAN base station 40 is stored. As such a wireless area, for example, a wireless LAN wireless area installed for each subway station or convenience store is applicable. In the broadcast channel, for example, names of broadcast channels that can be broadcast in the wireless area 40A, such as “NHK” and “TBS”, are stored.

  The viewing key database 3C stores information on viewing keys. Here, the data structure of the viewing key database 3C will be described with reference to FIG. The viewing key database 3C includes, for example, broadcast channels, television programs, and viewing keys as data items. The TV program stores the name of the TV program broadcast on each broadcast channel, and the viewing key stores a viewing key for releasing the scrambling of the TV program.

  The identification ID receiver 31 shown in FIG. 3 receives the area ID and telephone number transmitted by the mobile phone 10.

  The contract broadcast channel extraction unit 32 extracts, from the contract broadcast channel database 3A, the contract broadcast channel with which the user of the mobile phone 10 is subscribed based on the telephone number received by the identification ID reception unit 31.

  The broadcast channel extraction unit 33 extracts broadcast channels that can be broadcast in the wireless area 40A of the wireless LAN from the broadcast channel database 3B based on the area ID received by the identification ID reception unit 31.

  The viewing key extraction unit 34 is broadcast on the broadcast channel based on the broadcast channel that is the contract broadcast channel extracted by the contract broadcast channel extraction unit 32 and is the broadcast channel extracted by the broadcast channel extraction unit 33. The viewing key for the television program is extracted from the viewing key database 3C. That is, the viewing key extraction unit 34 extracts a viewing key of a television program broadcast on a broadcast channel that can be viewed by the user in the wireless area 40A where the mobile phone 10 is located.

  The TV program information transmitting unit 35 transmits to the mobile phone 10 TV program information including the viewing key extracted by the viewing key extracting unit 34 and the broadcast channel and TV program corresponding to the viewing key. The television program information only needs to include at least a viewing key and a broadcast channel. In this case, when the user selects a broadcast channel, the program currently broadcast on the selected broadcast channel is received. However, by including the television program in the television program information, the user can select the program to view after recognizing the television program when viewing the television.

  Based on the viewing key reception notification transmitted by the mobile phone 10, the billing unit 36 generates billing information necessary for billing processing. This billing information is generated based on the viewing key received by the mobile phone 10. That is, a predetermined fee for each viewing key is charged to the mobile phone 10. In addition, the billing unit 36 performs billing processing based on the billing information described above on a predetermined billing processing date. This makes it possible to collect a fee for distributing the viewing key from the user of the mobile phone 10.

  Next, the operation of the wireless LAN broadcast system 1 in this embodiment will be described with reference to FIG. First, when the mobile phone 10 moves into the wireless area 40A covered by the base station 40 of the wireless LAN, the area ID receiving unit 11 of the mobile phone 10 receives the area ID distributed from time to time by the base station 40 of the wireless LAN. (Step S1).

  Next, when the identification ID transmission unit 12 of the mobile phone 10 detects that the user presses the TV button (step S2), the identification ID transmission unit 12 sets the area ID received by the area ID reception unit 11 and the telephone number of the mobile phone 10. And transmitted to the management server 30 (step S3).

  Next, the contract broadcast channel extraction unit 32 of the management server 30 selects the contract broadcast channel for which the user of the mobile phone 10 has subscribed to the contract broadcast channel database based on the telephone number received by the identification ID reception unit 31. Extract from 3A (step S4).

  Next, the broadcast channel extraction unit 33 of the management server 30 extracts, from the broadcast channel database 3B, broadcast channels that can be broadcast in the wireless area 40A of the wireless LAN based on the area ID received by the identification ID reception unit 31. (Step S5).

  Next, the viewing key extraction unit 34 of the management server 30 is based on the broadcast channel that is the contract broadcast channel extracted by the contract broadcast channel extraction unit 32 and is the broadcast channel extracted by the broadcast channel extraction unit 33. The viewing key corresponding to the television program broadcast on the broadcast channel is extracted from the viewing key database 3C (step S6).

  Next, the television program information transmission unit 35 of the management server 30 sends the viewing key extracted by the viewing key extraction unit 34 and the television program information including the broadcast channel and the television program corresponding to the viewing key to the mobile phone 10. Transmit (step S7).

  Next, when the TV program information receiving unit 13 receives the TV program information including the viewing key by the TV program information receiving unit 13, the viewing key reception notification transmitting unit 15 of the mobile phone 10 issues a viewing key reception notification indicating that the viewing key has been received. It transmits to the management server 30 (step S8).

  Next, when the reception start signal transmission unit 16 of the mobile phone 10 detects that the broadcast channel has been selected by the user (step S9), the reception start signal transmission unit 16 transmits a broadcast reception start signal to the base station 40 of the wireless LAN (step S10). ). As a result, a broadcast reception start signal is transmitted from the wireless LAN base station 40 to the content server.

  Next, the content server 50 transmits a television program broadcast on the broadcast channel corresponding to the broadcast reception start signal to the wireless LAN base station 40 (step S11). As a result, the TV program is transmitted from the wireless LAN base station 40 to the mobile phone 10. That is, the mobile phone 10 receives a television program broadcast by the base station 40 of the wireless LAN.

  Next, the descrambling unit 17 of the mobile phone 10 cancels the scramble applied to the television program received by the television program receiving unit 14 using the viewing key (step S12). As a result, the television program after the scramble is canceled is displayed on the display screen of the mobile phone 10. That is, the user of the mobile phone 10 can view a television program.

  Next, the billing unit 36 of the management server 30 generates billing information necessary for billing processing based on the viewing key reception notification transmitted by the mobile phone 10, and executes billing processing (step S13). .

  As described above, in the wireless LAN broadcasting system 1 according to the present embodiment, the mobile phone 10 identifies the area ID and the own apparatus 10 for identifying the wireless LAN wireless area 40A in which the own apparatus 10 is located. Are transmitted to the management server 30. Then, the management server 30 that has received the area ID and the telephone number extracts and extracts the contract broadcast channel stored corresponding to the telephone number and the broadcast channel stored corresponding to the area ID. Based on a common broadcast channel among the broadcast channels, the viewing key stored corresponding to the broadcast channel is extracted. As a result, the management server 30 extracts a viewing key corresponding to a broadcast channel that can be broadcast within the wireless LAN 40A of the wireless LAN in which the user of the mobile phone 10 has a viewing contract and the mobile phone 10 is located. be able to.

  In addition, the management server 30 transmits program information including a viewing key and a broadcast channel corresponding to the viewing key to the mobile phone 10. Then, the mobile phone 10 that has received the program information receives a television program that is scrambled and broadcast on the broadcast channel included in the program information, and the received television program is decrypted using the viewing key. Thereby, the user of the mobile phone 10 can easily view the scrambled television program.

  Further, since the viewing key received by the mobile phone 10 from the management server 30 is received via the base station 20 of the mobile communication network, the viewing key is distributed only to contract users who can use the mobile communication network. It is possible to prevent leakage of the viewing key by using the security of the mobile communication network.

It is a figure which shows the system configuration | structure of the wireless LAN broadcast system in embodiment. It is a block diagram which shows the function structure of the mobile telephone shown in FIG. It is a block diagram which shows the function structure of the management server shown in FIG. It is a figure which shows the data structure of a contract broadcast channel database. It is a figure which shows the data structure of a broadcast channel database. It is a figure which shows the data structure of a viewing-and-listening key database. It is a sequence diagram which shows the operation | movement between each apparatus of a wireless LAN broadcast system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wireless LAN broadcast system, 10 ... Mobile telephone, 11 ... Area ID receiving part, 12 ... Identification ID transmission part, 13 ... Television program information receiving part, 14 ... Television program Receiving unit, 15 ... viewing key reception notification transmitting unit, 16 ... reception start signal transmitting unit, 17 ... descrambling unit, 20 ... base station of mobile communication network, 30 ... management server 31 ... Identification ID receiving unit, 32 ... Contract broadcast channel extracting unit, 33 ... Broadcast channel extracting unit, 34 ... Viewing key extracting unit, 35 ... TV program information transmitting unit, 36. ..Billing unit, 3A ... contracted broadcast channel database, 3C ... viewing key database, 3B ... broadcast channel database, 40 ... wireless LAN base station, 40A ... wireless area, 50 ... ·content Over server.

Claims (3)

A base station of a wireless LAN that broadcasts a TV program, a mobile communication terminal connectable to the base station of the wireless LAN, a base station of a mobile communication network connectable to the mobile communication terminal, the mobile communication terminal, and the mobile communication terminal A wireless LAN broadcast system comprising a management server for performing communication via a base station of a mobile communication network,
The mobile communication terminal is
An area ID receiving means for receiving an area ID for identifying the wireless area from the wireless LAN base station when moving into a wireless area covered by the wireless LAN base station;
An identification ID transmitting means for transmitting the received area ID and a terminal ID for identifying the mobile communication terminal to the management server;
Program information receiving means for receiving, from the management server, program information including a broadcast channel for broadcasting a TV program and a viewing key for viewing the TV program;
Program receiving means for receiving a television program broadcast on the broadcast channel included in the program information received by the program information receiving means from the base station of the wireless LAN;
Decrypting means for decrypting the television program received by the program receiving means using the viewing key received by the program information receiving means,
The management server is
Identification ID receiving means for receiving the area ID and the terminal ID from the mobile communication terminal;
Based on the terminal ID received by the ID receiving means, a contract broadcast channel that the user of the mobile communication terminal subscribes to is stored in advance in association with the terminal ID and the contract broadcast channel. Contract broadcast channel extraction means for extracting from the broadcast channel storage means;
Broadcast channel storage means for preliminarily storing the broadcast channel that can be broadcast by the base station of the wireless LAN based on the area ID received by the ID receiving means in association with the area ID and the broadcast channel. Broadcast channel extraction means for extracting from,
Based on the contract broadcast channel extracted by the contract broadcast channel extraction means and the broadcast channel extracted by the broadcast channel extraction means, a user of the mobile communication terminal views in the wireless area corresponding to the area ID. A viewing key extraction unit that extracts a viewing key corresponding to the possible broadcast channel from a viewing key storage unit that stores the broadcast channel and the viewing key in association with each other;
Program information transmitting means for transmitting program information including at least the viewing key extracted by the viewing key extracting means and a broadcast channel corresponding to the viewing key to the mobile communication terminal;
A wireless LAN broadcast system comprising: The mobile communication terminal is
When the program information receiving unit receives the viewing key, the program information receiving unit further includes a reception notification transmitting unit that transmits a reception notification indicating that the viewing key has been received to the management server,
The management server is
The wireless LAN broadcast system according to claim 1, further comprising billing means for executing billing processing for collecting the fee for the viewing key based on the reception notification transmitted by the mobile communication terminal. The mobile communication terminal is
A reception start signal transmission means for transmitting a reception start signal indicating that reception of a television program included in the program information received by the program information reception means is started to the base station of the wireless LAN;
3. The wireless LAN broadcast system according to claim 1, wherein the program receiving unit receives a television program broadcast on the broadcast channel after the reception start signal is transmitted by the reception start signal transmitting unit. .

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