JP5093696B2 - Content distribution system, content distribution transmission side system, content distribution reception side system, and content distribution method - Google Patents

Description

  The present invention relates to a content distribution system, a content distribution transmission side system, a content distribution reception side system, and a content distribution method for distributing content, and in particular, a content distribution system and content distribution transmission side system for distributing content to many consumers. The present invention relates to a content distribution receiving system and a content distribution method.

  Referring to FIG. 11, conventionally, a flyer that is folded into a newspaper is passed to a newspaper company 700 directly from a company, a store, or an individual, or indirectly through an advertising agency or printing company, The newspaper company 700 folds it into a newspaper and delivers it to the consumer 900. The newspaper company 700 receives an insertion fee from the supplier of the leaflet as consideration for the insertion of the leaflet into the newspaper.

  Also, the newspaper is based on the advertisement data by passing the advertisement data directly to the newspaper company 700 from a company, a store or an individual, or indirectly through an advertising agency or a printing company. Ads are running. The newspaper company 700 receives an advertisement fee from a supplier of advertisement data as a price for placing the advertisement. The newspaper company 700 further receives a newspaper subscription fee from the consumer 900 as consideration for delivering the newspaper.

  On the other hand, a CM (Commercial Message) is sent from the broadcasting station 800 based on CM data delivered to the broadcasting station 800 directly from a company, a store or an individual, or indirectly through an advertising agency or the like. The program is broadcast between programs and is viewed by a consumer 900 on a television receiver. The broadcasting station 800 receives commercial broadcast fees from companies, shops, individuals, advertising agencies, printing companies, etc. as consideration for broadcasting commercials.

  As described above, in the conventional content providing system 20, the content supplier 600 such as a flyer, an advertisement, and a CM such as a company, a store, an individual, an advertising agency, and a printing company is a content such as a flyer, an advertisement, and a CM. To the consumer 900.

  In recent years, a technology that can easily purchase content distributed to consumers 900 using broadcast waves has been developed (see, for example, Patent Document 1). According to the technique described in Patent Document 1, as described in paragraph [0028], content data is transmitted using a broadcast channel different from the broadcast channel used by broadcast data of a normal program.

JP 2009-141432 A

  However, since the number of channels is limited, there is a problem that it is difficult to use different broadcast channels only for transmitting content data. In addition, in order to use a new broadcast channel, it is necessary to obtain permission based on the Radio Law and the Broadcast Law, etc., so it is difficult to motivate such an application only for the transmission of content data. There was a problem.

  The present invention has been made to solve the above-described problems, and one of its purposes is a content distribution system and content distribution capable of more easily transmitting content data using broadcast waves. It is to provide a transmission side system, a content distribution reception side system, and a content distribution method.

  In order to achieve the above object, according to one aspect of the present invention, a content distribution system includes a transmission side system and a reception side system.

The transmission-side system broadcasts a plurality of content data managed by the data management unit and a data management unit that manages a plurality of content data to be distributed to a plurality of users together with broadcast of broadcast data of programs and commercial messages. Multiplexing the protocol conversion unit that converts to the conversion data of the stream data format of the predetermined video compression method of the same format as the data, the broadcast data supplied from the outside, and the conversion data converted by the protocol conversion unit Multiplexer for generating data and transmission of multiplexed data generated by the multiplexer to enable transmission as a broadcast signal, and broadcasting the broadcast signal on a broadcast channel of broadcast data included in the broadcast signal Including

The receiving system receives the broadcast signal transmitted from the transmitting system and restores the multiplexed data, and the separation that separates the broadcast data and the converted data from the multiplexed data restored by the restoring unit A decoding unit that decodes the content data from the converted data separated by the separation unit, a storage unit that stores the content data decoded by the decoding unit, and a content indicated by the content data stored by the storage unit And a reproduction processing unit that executes processing for performing the processing.
The multiplexing unit and the transmission enabling unit are provided for each of a plurality of channels for transmitting broadcast data. The restoration unit receives a broadcast signal transmitted from the transmission-side system on any of a plurality of channels, and restores the multiplexed data. The multiplexing unit repeatedly multiplexes the content data into broadcast data for a predetermined time.
The receiving system further receives an operation accepting unit that accepts an operation to switch channels, and a part of content data before the switching is received when an operation accepting operation is accepted by the operation accepting unit while receiving a broadcast signal. If not, a reacquisition processing unit that executes processing for acquiring the part received after switching is included.

  According to the present invention, a plurality of content data to be distributed to a plurality of users together with broadcast of program and commercial message broadcast data is managed by the transmission side system of the content distribution system. , Converted into converted data in a stream data format of a predetermined video compression method in the same format as the broadcast data, the broadcast data supplied from the outside and the converted conversion data are multiplexed to generate multiplexed data, The generated multiplexed data is enabled to be transmitted as a broadcast signal, and the broadcast signal is broadcast on the channel.

  In addition, a broadcast signal transmitted from the transmission side system is received by the reception side system of the content distribution system, restored to multiplexed data, broadcast data and converted data are separated from the restored multiplexed data, The content data is decrypted from the separated converted data, the decrypted content data is accumulated, and a process for reproducing the content indicated by the accumulated content data is executed.

For this reason, content data is transmitted as a part of the broadcast signal to be transmitted. As a result, it is possible to provide a content distribution system that can transmit content data more easily using broadcast waves.
In addition, the same content data is transmitted to the receiving system in any of the plurality of channels. As a result, the content data can be transmitted at a high arrival rate by the transmission side system of the content distribution system.
In addition, when the operation of switching the channel is received during reception of the broadcast signal by the receiving system of the content distribution system, if a part of the content data before switching is not received, it is repeatedly multiplexed into the broadcast signal. The process of acquiring the part received after switching is performed from the content data being stored. As a result, the content data can be received more reliably by the receiving system of the content distribution system.

  More preferably, the protocol conversion unit divides the content data and converts the content data into conversion data that is packet data. The conversion data includes information indicating the size of the original content data and information indicating the order of each packet data. In addition, the reacquisition processing unit acquires the conversion data in the order not received, and the decoding unit decodes the content data by connecting the conversion data based on the order added to the conversion data.

  According to the present invention, the transmission side system of the content distribution system transmits the broadcast data including the conversion data which is the packet data obtained by dividing the content data, and the reception side system has the conversion data in the order not received. Content data is decrypted by concatenating the converted data based on the order obtained and added to the converted data. As a result, the content data can be received more reliably by the receiving system of the content distribution system.

According to another aspect of the present invention, a content distribution transmitting system includes a data management unit that manages a plurality of content data for distribution to a plurality of users together with broadcast of broadcast data of programs and commercial messages, and a data management unit A protocol conversion unit that converts a plurality of content data managed by the video data into converted data of a predetermined video compression stream data format in the same format as broadcast data, broadcast data supplied from the outside, and protocol conversion unit A multiplexing unit that multiplexes the converted conversion data to generate multiplexed data, and enables the multiplexed data generated by the multiplexing unit to be transmitted as a broadcast signal, and the broadcast signal is included in the broadcast signal A transmission enabling unit that broadcasts on a broadcast channel of broadcast data.
The multiplexing unit and the transmission enabling unit are provided for each of a plurality of channels for transmitting broadcast data. The multiplexing unit repeatedly multiplexes the content data into broadcast data for a predetermined time.
The broadcast signal transmitted by the transmission enabling unit is received on one of a plurality of channels, restored to multiplexed data, broadcast data and converted data are separated from the restored multiplexed data, and separated conversion is performed. The content data is decrypted from the data, the decrypted content data is accumulated, a process for reproducing the content indicated by the accumulated content data is executed,
A part of the content data acquired from the broadcast signal transmitted by the transmission enabling unit of any one of the plurality of channels is switched to another channel among the plurality of channels during reception of the broadcast signal. If it is not acquired because of being performed, it can be acquired from the broadcast signal received after the switching transmitted by the transmission enabling unit of the other channel.

According to the present invention, it is possible to provide a content distribution transmission side system that can transmit content data more easily using broadcast waves. The content distribution transmission system can transmit content data with a high reach. Content data can be received more reliably by the content distribution receiving system.

  Preferably, the multiplexing unit multiplexes including identification information for enabling the receiving side to identify that the data is converted data of content data.

  According to this invention, when the content data conversion data is separated from the multiplexed data by the content distribution receiving side system, the content distribution receiving side system is surely identified as the content data conversion data. Can do.

According to still another aspect of the present invention, the content distribution receiving system receives a broadcast signal transmitted from the content distribution transmission side system, and distributes the broadcast data of a predetermined video compression method and a plurality of users. A restoration unit that restores multiplexed data obtained by multiplexing a plurality of pieces of content data converted into a predetermined video compression method, broadcast data and converted data from the multiplexed data restored by the restoration unit, A separation unit for separating the content data, a decoding unit for decoding the content data from the converted data separated by the separation unit, a storage unit for storing the content data decoded by the decoding unit, and content data stored by the storage unit And a reproduction processing unit that executes processing for reproducing the content to be reproduced.
The restoration unit receives a broadcast signal transmitted from the content delivery / transmission system on any of a plurality of channels for transmitting broadcast data, and restores the multiplexed data. Content data is repeatedly multiplexed with broadcast data for a predetermined time in any of the broadcast signals of a plurality of channels.
The content distribution receiving system further receives an operation accepting unit that accepts an operation of switching channels, and a part of content data before the switching is received when an operation accepting operation is accepted by the operation accepting unit while receiving a broadcast signal. If not, a reacquisition processing unit that executes processing for acquiring the part received after switching is included.

According to the present invention, it is possible to provide a content delivery / reception-side system that can transmit content data more easily using broadcast waves. The content distribution receiving system can be made to receive content data at a high arrival rate. Content data can be received more reliably by the content distribution receiving system.

  Preferably, the information processing apparatus further includes a display unit that displays programs and commercial messages indicated by broadcast data and content, and the reproduction processing unit executes processing for displaying content on the display unit as processing for reproducing the content.

  Preferably, as a process for reproducing the content, the reproduction processing unit executes a process of outputting the content to the display device in order to display the content on an external display device.

  Preferably, the separation unit identifies and separates the converted data based on identification information for enabling identification of content data converted data included in the multiplexed data.

  According to this invention, when the converted data of the content data is separated from the multiplexed data by the content distribution receiving system, it can be surely identified as the converted data of the content data.

According to still another aspect of the present invention, the content distribution method is a method executed in a content distribution system including a transmission side system and a reception side system. In the content distribution method, the transmission side system manages a plurality of content data for distribution to a plurality of users together with broadcast of broadcast data of programs and commercial messages, and the plurality of managed content data are broadcast data Converting the converted data into a stream data format of a predetermined video compression method in the same format as the above, and generating multiplexed data by multiplexing the broadcast data supplied from outside and the converted conversion data; Including the step of transmitting the generated multiplexed data to be a broadcast signal and broadcasting the broadcast signal on a broadcast channel of the broadcast data included in the broadcast signal, and the receiving system transmits from the transmitting system Receiving the received broadcast signal and restoring it to multiplexed data; A step of separating broadcast data and converted data from the multiplexed data, a step of decoding content data from the separated converted data, a step of storing the decoded content data, and a content indicated by the stored content data Executing a process for reproducing the content.
The step of generating multiplexed data and the step of broadcasting a broadcast signal are executed for each of a plurality of channels for transmitting broadcast data. In the step of restoring to multiplexed data, a broadcast signal transmitted from one of the plurality of channels from the transmission side system is received and restored to multiplexed data. The step of generating multiplexed data repeatedly multiplexes content data into broadcast data for a predetermined time.
If the receiving system further accepts the operation of switching the channel and the operation of switching the channel while receiving the broadcast signal, if part of the content data before the switching has not been received, after the switching Executing a process of obtaining the received part.

According to the present invention, it is possible to provide a content distribution method capable of more easily transmitting content data using broadcast waves. The content data can be transmitted at a high arrival rate by the transmission side system of the content distribution system. The content data can be received more reliably by the receiving system of the content distribution system.

  Therefore, it is possible to provide a content distribution system, a content distribution transmission side system, a content distribution reception side system, and a content distribution method that can transmit content data more easily using broadcast waves.

It is a figure which shows the outline of the mass content delivery system in embodiment of this invention. It is a block diagram which shows the outline of a structure of the mass content delivery system in this embodiment. It is a functional block diagram which shows the outline of the function for transmission of the content data of the system of the aggregator of the transmission side of the mass content delivery system in this embodiment. It is a figure which shows an example of the delivery schedule of content data in this embodiment. It is a functional block diagram which shows the outline of the function for the delivery of the content data of the system of the broadcasting station of the transmission side of the mass content delivery system in this embodiment. It is a figure which shows the utilization division of the transmission band of the digital terrestrial television broadcast for 1 channel in this embodiment. It is a functional block diagram which shows the outline of the function for reception and accumulation | storage of the content data of the television receiver of the receiving side of the mass content delivery system in this embodiment. It is a flowchart which shows the flow of the viewing selection display process performed with the television receiver of the receiving side of the mass content delivery system in this embodiment. It is a table | surface which shows the comparison of the quantitative effect obtained by the mass content delivery system in this embodiment, and the conventional method. It is a table | surface which shows the comparison of the qualitative effect obtained by the mass content delivery system in this embodiment, and the conventional method. It is a figure which shows the outline of the system for the delivery of content, such as the conventional newspaper, a handbill, a program, and CM.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the same or corresponding parts in the drawings are denoted by the same reference numerals and description thereof will not be repeated.

  FIG. 1 is a diagram schematically showing a mass content delivery system 10 according to an embodiment of the present invention. The mass content delivery system is a system for transmitting content data different from a program and CM (Commercial Message) using a part of the frequency band of the broadcast wave of each broadcast station channel.

  Referring to FIG. 1, a mass content delivery system 10 includes a content supplier 100 such as a newspaper company 100A, a company / shop / individual 100B, and a content supplier 100C, an aggregator 200, and an A broadcast station 300A. A broadcast station 300 such as a B broadcast station 300B and a C broadcast station 300C, and a consumer 400 are included.

  A broadcast station 300A, B broadcast station 300B, and C broadcast station 300C have overlapping broadcast areas (for example, areas that generally cover one prefecture (for example, Hiroshima prefecture), areas that cover a part of the prefecture) Or an area (Kinki region) that generally covers a plurality of prefectures (including a part of the prefectures).

  In the present embodiment, the broadcast station 300 in the area is three stations of the A broadcast station 300A, the B broadcast station 300B, and the C broadcast station 300C. However, the present invention is not limited to this. It may be a station.

  The content provider 100 delivers content data to be distributed by broadcast waves to the aggregator 200. For example, the newspaper company 100A delivers the digitized newspaper data of the newspaper as content data. The company / store / individual 100B delivers the electronic leaflet data of the leaflet conventionally folded in a newspaper as content data. The content provider 100C delivers video data, music data, data indicating regional information, game program data, or the like as content data.

  In addition, the company / store / individual 100B may deliver coupon data that can receive a privilege when purchasing a product to the aggregator 200 as content data.

  In the present embodiment, the content data includes SWF (FLASH format), WMV (Windows (registered trademark) Media Video), AVI (Audio Video Interleave), JPG (Joint Photographic Experts Group), H.264. 264, mpeg (Moving Picture Experts Group), mp3 (MPEG Audio Layer-3), pdf (Portable Document Format), ppt (PowerPoint format), WAV (RIFF (Resource Interchange File Format) Waveform Audio Format), xls (Excel format) ), Doc (Word format) or any other data format such as a document, video, or music, and is not limited to the specific examples described above.

  The aggregator 200 delivers content data such as newspapers, leaflets, videos or music received from the content provider 100 to the A broadcasting station 300A, the B broadcasting station 300B, and the C broadcasting station 300C.

  Each of the A broadcast station 300A, the B broadcast station 300B, and the C broadcast station 300C broadcasts the content data received from the aggregator 200 together with its own program and CM data in the broadcast signal.

  The consumer 400 includes a program and CM based on data included in a broadcast signal received from any of the A broadcast station 300A, the B broadcast station 300B, and the C broadcast station 300C, and content (for example, a newspaper) And flyers, and video and music) are viewed on the display unit 415 and the speaker of the television receiver 410. If the content data includes data indicating regional information, the consumer 400 views the regional information on the display unit of the television receiver 410. If the content data includes game program data, the consumer 400 The game program is executed on the machine 410.

  The distribution fee is charged from the content provider 100 such as the newspaper company 100A, the company / shop / individual 100B, and the content provider 100C via the aggregator 200 to the A broadcast station 300A, the B broadcast station 300B, the C broadcast station 300C, The broadcast station 300 is paid.

  The distribution fee is aggregated for each content provider 100 according to the amount of content data received from the content provider 100 by a computer installed in the aggregator 200 and distributed to each of the plurality of broadcasting stations 300.

  When the consumer 400 views a newspaper, the consumer 400 pays a newspaper subscription fee to the newspaper company 100A. Further, when the consumer 400 uses paid content, the consumer 400 pays a paid content purchase fee to the content provider 100C. Here, the newspaper subscription fee and the paid content purchase fee are paid directly from the consumer 400 to the newspaper company 100A and the content provider 100C, respectively. The content purchase fee may be paid from the consumer 400 to the newspaper company 100A and the content provider 100C via a third party such as the aggregator 200, respectively.

  Note that, as in the past, the advertisement data is handed over to the newspaper 100A directly from the company / store / individual 100B or indirectly through the advertising agency or printing company. An advertisement based on the advertisement data is placed. The newspaper company 100A receives an advertisement fee from a supplier of advertisement data as a price for placing the advertisement.

  In addition, CMs are broadcast from the broadcasting station 300 based on the CM data delivered to the broadcasting station 300 directly from the company / store / individual 100B or indirectly through an advertising agency or the like. It is broadcast in the meantime and viewed by the consumer 400 on the television receiver 410. The broadcasting station 300 receives a CM broadcast fee from a company / store / individual 100B as consideration for broadcasting the CM.

  By such a content delivery system 10, content providers 100 such as a newspaper company 100A, a company / store / individual 100B, and a content provider 100C can broadcast from the A broadcast station 300A, the B broadcast station 300B, and the C broadcast station 300C. Content data such as newspapers, flyers, videos and music can be distributed to the area.

  Broadcast stations 300 such as the A broadcast station 300A, the B broadcast station 300B, and the C broadcast station 300C can obtain a distribution fee as a price for distributing such content data.

  The newspaper company 100A and the paid content provider 100C can obtain a newspaper subscription fee and a paid content purchase fee as consideration for the distribution of newspapers and content data, respectively.

  The consumer 400 can view newspapers and flyers, and contents such as video and music on the television receiver 410.

  FIG. 2 is a block diagram showing an outline of the configuration of the mass content delivery system 10 in this embodiment. Referring to FIG. 2, the content supplier 100 includes a content supply computer 110 that is used to supply content data to the aggregator 200.

  The aggregator 200 includes a content collection server 210 for collecting content data from the content supplier 100 via the network 500, a distribution management server 220 for managing a distribution schedule of the content data, and a communication protocol conversion. Is provided with a protocol conversion server 230 for performing the data, an IP encapsulation device 240 for encapsulating the content data, and a distribution data distribution device 250 for distributing the data to be distributed to each broadcasting station. The network 500 is, for example, an Internet communication network or a dedicated line.

  Here, the computer provided in the aggregator 200 is composed of five units: a content collection server 210, a distribution management server 220, a protocol conversion server 230, an IP encapsulation device 240, and a distribution data distribution device 250. However, the present invention is not limited to this, and the functions of these computers may be included in one computer, or may be included in a plurality of computers with an allocation different from the present embodiment.

  The broadcast station 300 multiplexes the existing broadcast supply equipment 310 for supplying a broadcast of a program and CM to a multiplexer (MUX (multiplexer)) 320, and the content data from the program, the CM, and the aggregator 200. A multiplexing device 320, an encryption device 330 for encrypting the multiplexed data, and a transmission device 340 for broadcasting the encrypted broadcast signal from the antenna 390.

  The consumer 400 includes a television receiver 410 for receiving a broadcast signal from the antenna 490 and displaying it.

  FIG. 3 is a functional block diagram showing an outline of functions for transmitting content data in the system of the aggregator 200 on the transmission side of the mass content delivery system 10 in this embodiment.

  Referring to FIG. 3, content collection server 210 includes a content collection unit 211, a content registration unit 212, and a content storage unit 213.

  The content collection unit 211 collects content data by receiving content data from the content supply computer 110 of the content provider 100 via the network 500.

  The content registration unit 212 registers the content data collected by the content collection unit 211 in the content storage unit 213.

  The content storage unit 213 stores the content data registered by the content registration unit 212.

  The distribution management server 220 includes a content acquisition unit 221, a distribution scheduler registration unit 222, a distribution time determination unit 223, and a content distribution unit 224.

  The content acquisition unit 221 acquires content data from the content storage unit 213 of the content collection server 210.

  The distribution scheduler registration unit 222 registers the distribution time of the content data acquired by the content acquisition unit 221. The distribution time is a time when distribution of the content data starts and a time when it ends. For example, the distribution time is registered when the content data is registered in the content storage unit 213 of the content collection server 210, and is acquired when the content data is acquired by the content acquisition unit 221.

  FIG. 4 is a diagram showing an example of a distribution schedule of content data in this embodiment. Referring to FIG. 4, in this distribution schedule, the same content data is distributed at the same timing until 6 o'clock. Specifically, the distribution of the content 1 is started at the timing when the program A1, the program B1, and the program C1 start. At the timing when the program C1 ends and the program C2 starts, the distribution of the content 1 is ended and the distribution of the content 2 is started. At the timing when the program A1 and the program B1 are finished and the program A2 and the program B2 are started, the delivery of the content 2 is finished and the delivery of the content 3 is started.

  At the timing when the program A2, the program B2, and the program C2 are continued, the distribution of the content 3 is finished and the distribution of the content 4 is started. At the timing when the program A2 and the program C2 are finished and the program A3 and the program C3 are started, the distribution of the content 4 is finished.

  After 6 o'clock, for example, each broadcast station distributes different content data every 20 minutes. For example, content data adapted to the content of the program is distributed.

  Specifically, the broadcasting station A starts the distribution of the content 5 adapted to the contents of the program A3 at the timing when the program A3 starts, and then the contents 6, 7 adapted to the contents of the program A3 every 20 minutes. To deliver.

  In the B broadcasting station, distribution of the content 8 adapted to the content of the program B2 starts at 6 o'clock when the program B2 continues, and then the program B2 after 20 minutes has ended and the program B3 starts At the timing, the distribution of the content 9 adapted to the contents of the program B3 is started, and the distribution of the content 10 adapted to the contents of the program B3 is started 20 minutes later.

  The C broadcasting station starts distributing the contents 11 adapted to the contents of the program C3 at the timing when the program C3 starts, and then distributes the contents 12 and 13 adapted to the contents of the program C3 every 20 minutes.

  Content 1 to content 13 are repeatedly transmitted from the start of distribution to the end of distribution.

  In this way, each broadcast station broadcasts a separate program independently, but the content data is distributed at the same timing or distributed at different timings depending on the time zone. To do. It is preferable that each broadcast station distributes the same content data during a time period when the audience rating is low, such as at night, and each broadcast station distributes unique content data during a time period when the audience rating is high such as daytime or golden time.

  For example, each broadcast station's unique content data (content data adapted to the content of the program) is a song program, such as PV (promotion video) data about a singer, and a movie program is a new movie. Data such as trailer video data and on-air cinema information data can be considered.

  Returning to FIG. 3, the distribution time determination unit 223 determines whether or not the time for starting distribution of content data or the time for ending distribution has come.

  When the distribution time determination unit 223 determines that the time for starting distribution of the content data has come, the content distribution unit 224 starts the distribution of the content data acquired by the content acquisition unit 221 in order to start the distribution of the content data Is supplied to the protocol conversion server 230.

  Also, the content distribution unit 224 ends the supply of the content data supplied to the protocol conversion server 230 when the distribution time determination unit 223 determines that it is time to end the distribution of the content data.

  The protocol conversion server 230 includes a fixed length division processing unit 231, an error correction processing unit 232, and a communication protocol conversion unit 233.

  The fixed-length division processing unit 231 is a partial content data having a fixed data length in consideration of data added in subsequent processing in order to process the content data from the distribution management server 220 as a fixed-length TS (Transport Stream) packet. Divide into

  The error correction processing unit 232 adds FEC (Forward Error Correction) data for correcting a transmission error due to characteristics on the transmission path to the partial content data divided by the fixed length division processing unit 231. As a result, it is possible to improve the restoration rate of the content data by performing correction processing for changes in the received electric field strength and changes in the received radio wave channel and ensuring a certain amount of data reception.

  The communication protocol conversion unit 233 converts the packet data processed by the error correction processing unit 232 into a file delivery over unidirectional transport (FLUTE) format that is a communication protocol that can perform data distribution using only a one-way transmission path. .

  Information indicating the size of the original content data and information indicating the order of each packet data are added to the FLUTE format packet. As a result, the receiving side can determine whether or not all packet data has been received. If all the packet data has not been received, it can be determined what number of packet data has not been received. In this embodiment, since the content data is repeatedly transmitted, it is possible to re-acquire packet data that has not been received, so that the content data can be restored.

  The IP encapsulation device 240 includes a transmission bandwidth control unit 241, a UDP / IP (User Datagram Protocol / Internet Protocol) packet addition unit 242, a header compression unit 243, an identification ID addition unit 244, an IP encapsulation unit 245, MPEG-2TS converter 246.

  The transmission band control unit 241 sets the transmission rate of the packet data processed by the protocol conversion server 230 so as not to affect the existing area of the broadcast wave (video / audio / data broadcasting / EPG (Electronic Program Guide), etc.). Restrict to a certain amount (for example, 100 kbps).

  The UDP / IP packet adding unit 242 adds a UDP header and an IP header to the packet data processed by the transmission bandwidth control unit 241.

  The header compression unit 243 compresses the UDP header and the IP header added by the UDP / IP packet addition unit 242 according to a ROHC (Robust Header Compression) algorithm.

  The identification ID giving unit 244 gives an identification ID to the packet data processed by the header compression unit 243. This identification ID is an ID indicating that a part of the content data is included in the packet data.

  The IP encapsulation unit 245 adds flag and packet size information as header information to the packet data processed by the identification ID adding unit 244 in accordance with ULE (Unidirectional Lightweight Encapsulation), and also performs error detection (CRC (Cyclic Redundancy)). Check)) code is added and data encapsulation is performed.

  The MPEG-2TS conversion unit 246 adds an identification ID (PID) and TS header information for reception control to the packet data processed by the IP encapsulation unit 245, and generates MPEG-2TS format packet data. To do.

  Distribution data distribution apparatus 250 includes transmission station setting unit 251. The transmission station setting unit 251 receives the setting of the broadcast station (multiple or single station) 300 to be transmitted in advance, and generates it with the MPEG-2TS conversion unit 246 for the multiplexing device 320 of the set broadcast station 300. Sent packet data.

  FIG. 5 is a functional block diagram showing an outline of functions for distributing content data in the system of the broadcasting station 300 on the transmission side of the mass content delivery system in this embodiment. Referring to FIG. 5, multiplexing apparatus 320 includes a distribution hierarchy control unit 321 and a TS multiplexing unit 322.

  The distribution layer control unit 321 is a one-segment band (A layer) for digital terrestrial television broadcasting (hereinafter referred to as “one-segment broadcasting” or “one-segment broadcasting”) of a one-segment partial reception service for mobile phones and mobile terminals, or Part of the content data supplied from the aggregator 200 using either the 12-segment band (B hierarchy) for normal terrestrial digital television broadcasting (hereinafter referred to as “full-segment broadcasting” or “12-segment broadcasting”) Is set whether to distribute packet data each including.

  The TS multiplexing unit 322 supplies from the aggregator 200 either the one-segment broadcasting program and CM or the full-segment broadcasting program and CM supplied from the broadcast supply facility 310 according to the setting in the distribution layer control unit 321. MPEG-2TS packet data including a part of the content data thus obtained is multiplexed.

  The TS multiplexing unit 322 multiplexes one-segment broadcasting and full-segment broadcasting, and data broadcasting and EPG supplied from the broadcasting supply facility 310.

  FIG. 6 is a diagram showing the use classification of the transmission band of digital terrestrial television broadcasting for one channel in this embodiment. Referring to FIG. 6, when packet data including content data is not multiplexed, that is, in the conventional case, the transmission band for one channel of terrestrial digital television broadcasting includes a full-segment broadcasting program and CM video and audio, In addition, video and audio of one-seg broadcasting programs and CMs, data broadcasting, and EPG data are included.

  When multiplexing packet data including content data, the transmission band for one channel of digital terrestrial television broadcasting includes a full-segment broadcasting program and CM video and audio, and a one-segment broadcasting program and CM video and audio. In addition to data broadcasting and EPG data, MPEG-2TS packet data each including a part of content data is included.

  In addition, here, a part of the transmission band for the conventional full-segment broadcasting program and CM video and audio is used for the MPEG-2TS packet data including part of the content data. However, a bandwidth that does not impair the quality of video and audio of a conventional full-segment broadcasting program and CM is used for content data distribution. That is, the distribution of content data is limited to a bit rate that can be transmitted with such a bandwidth.

  Returning to FIG. 5, the encryption device 330 includes a MULTI2 encryption unit 331. The MULTI2 encryption unit 331 encrypts the data multiplexed by the multiplexing device 320 in accordance with MULTI2 which is an encryption method adopted in terrestrial digital broadcasting.

  Transmitting apparatus 340 includes an Orthogonal Frequency-Division Multiplexing (OFDM) modulating unit 341 and a power amplifying unit 342.

  The OFDM modulation unit 341 performs modulation processing for transmitting the data encrypted by the encryption device 330 using broadcast radio waves.

  The power amplifying unit 342 amplifies the power of the broadcast signal modulated by the OFDM modulation unit 341 and transmits it as a broadcast wave from the antenna 390.

  FIG. 7 is a functional block diagram showing an outline of functions for receiving and accumulating content data in the television receiver 410 on the receiving side of the mass content delivery system in this embodiment.

  Referring to FIG. 7, a television receiver 410 includes a broadcast wave receiving unit 411, an OFDM demodulating unit 412, a MULTI2 decoding unit 413, a multiplexed data separating unit 414, a display unit 415, and an identification ID determining unit 421. An IP encapsulation decoding unit 422, a UDP / IP packet removal unit 423, a FLUTE decoding unit 431, an error correction restoration unit 432, a split file combination processing unit 433, a transmission source file generation unit 434, and content storage Unit 435, content output instruction receiving unit 441, content reading unit 442, and TV (Television) broadcast decoding / playback unit 451.

  The broadcast wave receiving unit 411 receives a broadcast signal input as a broadcast wave from the antenna 490.

  The OFDM demodulator 412 demodulates the OFDM-modulated broadcast signal received by the broadcast wave receiver 411.

  The MULTI2 decoding unit 413 decodes the data demodulated by the OFDM demodulation unit 412 in accordance with MULTI1.

  The multiplexed data separation unit 414 uses the multiplexed TS information decoded by the MULTI 2 decoding unit 413 to generate MPEG-2 TS packet data related to terrestrial digital television broadcasting (video / audio of one-segment broadcasting and full-segment broadcasting, data broadcasting, And EPG data) and MPEG-2TS packet data including content data are separated based on respective identification IDs (PID).

  The identification ID determination unit 421 performs IP encapsulation decoding only on packet data to which a PID designated in advance for distribution of content data is added among the MPEG-2TS packet data separated by the multiplexed data separation unit 414. Forward to the unit 422.

  The IP encapsulation decoding unit 422 removes the header information and the error detection code from the encapsulated packet data transferred from the identification ID determination unit 421.

  The UDP / IP packet removing unit 423 removes the identification ID and the UDP / IP header from the packet data processed by the IP encapsulation decoding unit 422.

  The FLUTE decoding unit 431 removes data added to convert the packet data processed by the UDP / IP packet removal unit 423 into the FLUTE format.

  The error correction restoration unit 432 removes the FEC data from the packet data processed by the FLUTE decoding unit 431, and obtains partial content data obtained by dividing the content data. In addition, when there is partial content data that has failed to be received, the error correction / restoration unit 432 has failed to receive from the FEC data of other packet data that exceeds a certain capacity other than the packet data that includes the partial content data. Restore partial content data. Thus, partial content data can be restored not only when reception is successful but also when reception fails.

  In the present embodiment, content data is transmitted from a plurality of broadcasting stations by broadcast communication. Therefore, when switching to a broadcasting station of another channel while receiving certain content data, an error correction / restoration unit 432 is a part in which reception failed using not only FEC data included in packet data received from a broadcast station of one channel but also FEC data included in packet data received from a broadcast station of another channel. Restore content data.

  With such a structure, the content data arrival rate can be increased not only when the channel is not switched during reception of the content data but also when the channel is switched.

  The divided file combination processing unit 433 concatenates the partial content data obtained by the error correction restoration unit 432 based on information indicating the order included in the packet data in the FLUTE format.

  The transmission source file generation unit 434 restores the data concatenated by the divided file combination processing unit 433 into a file having the same file format, name, capacity, and the like as the original content data. Then, the transmission source file generation unit 434 causes the content storage unit 435 to store the restored content data file.

  Here, an indicator lamp indicating that content data is being received may be lit between the time when the first part of certain content data is received and the time when the last part is received. . Further, when the last part of certain content data is received, a message indicating that the reception of the content data is completed may be displayed on the display unit 415 or another display device.

  The content output instruction receiving unit 441 receives an instruction to reproduce and output content data from the user from the remote control or the operation panel.

  The content reading unit 442 controls to read the content data from the content storage unit 435 in accordance with the instruction received by the content output instruction receiving unit 441 and to reproduce the content indicated by the content data on the display unit 415 and the speaker. .

  Based on the MPEG-2TS packet data related to terrestrial digital television broadcasting separated by the multiplexed data separation unit 414, the TV broadcast decoding / playback unit 451 performs one-segment broadcast program and CM video and audio, full-segment broadcast program and Controls decoding of terrestrial digital TV broadcast-related information such as CM video and audio, data broadcast content, or EPG, and reproducing the decoded terrestrial digital TV broadcast-related information on the display unit 415 and the speaker. .

  8 is executed, the content reading unit 442 and the TV broadcast decoding / playback unit 451 exclusively display the content and the information related to terrestrial digital television broadcast on the display unit 415 and Control to play with the speaker.

  The display unit 415 is configured by a display device. Here, the display device is an LCD (Liquid Crystal Display), but is not limited thereto, and may be a PDP (Plasma Display Panel), an organic EL (electro-luminescence), an inorganic EL, or the like. The EL display may be a CRT (Cathode Ray Tube) display.

  FIG. 8 is a flowchart showing the flow of the viewing selection display process executed by the television receiver 410 on the receiving side of the mass content delivery system in this embodiment. Referring to FIG. 8, in step S101, first, the control unit of television receiver 410 has been selected to view digital terrestrial television broadcast related information by operating a remote control or an operation panel by a user. Judge whether or not.

  When it is determined that viewing / listening of information related to digital terrestrial television broadcasting has been selected (when YES is determined in step S101), in step S110, the control unit is a television for viewing information related to digital terrestrial television broadcasting. Perform viewing processing. Thereafter, the control unit ends the viewing selection display process, and returns the process to be executed to the caller process of this process.

  If it is determined that viewing / listening of information related to terrestrial digital television broadcasting has not been selected (NO in step S101), the control unit is distributed and stored in content storage unit 435 in step S102. It is determined whether or not the viewing of the content indicated by the content data is selected.

  If it is determined that viewing of content has been selected (YES in step S102), the control unit causes the display unit 415 to display a list of content stored in the content storage unit 435 in step S121. Control as follows.

  In step S122, it is determined whether content is selected from the list by operating the remote control or the operation panel by the user. If it is determined that no content has been selected (NO in step S122), the control unit repeats the process of step S122.

  On the other hand, if it is determined that the content has been selected (YES in step S122), in step S123, the control unit determines that the area indicated by the installation area ID is in the area indicated by the distribution area ID of the selected content. Judge whether it is included.

  The distribution area ID is an ID indicating an area in which the content data specified by the content supplier 100 is to be distributed when the content supplier 100 supplies the content data to the aggregator 200. For example, the distribution area ID is a zip code or the longitude of the area. Information that can specify a region such as latitude information is used, and is attached to content data and distributed.

  The installation area ID is an ID that is set when the television receiver 100 is installed by the consumer 400, is an ID that indicates the area in which the television receiver 100 is installed, and can specify the same area as the distribution area ID. Information is used.

  If it is determined that the area of the installation area ID is included in the area of the distribution area ID of the selected content (when YES is determined in step S123), the control unit in step S124, the selected content is the paid content. Judge whether there is. Paid content includes not only video data, music data, and application program data, but also newspapers.

  If it is determined that the paid content is determined (YES in step S124), in step S125, the control unit determines whether the fee for the paid content has been settled.

  For example, DRM (Digital Rights Management) technology can be used as a fee settlement technology for paid content. Specifically, the television receiver 410 or other computer provided in the consumer 400 is used, and payment is made with the payment server provided in the aggregator 200 via the Internet for the fee of the distributed paid content. Is done. Then, a DRM ticket that is a decryption key issued from the settlement server of the aggregator 200 based on the completion of the settlement is stored in the storage unit of the television receiver 410. In step S125, it is determined whether or not the fee settlement has been completed by determining whether or not the DRM ticket is stored.

  In addition, the settlement fees of the aggregator 200 are aggregated for each paid content, and the fees charged to the bank account of the aggregator 200 as a result of the settlement are used as the bank of the content supplier 100 that provided the paid content. When the process of transferring to an account is requested from the settlement server to the bank server, the totaled fee is paid to the content supplier 100 that provided the paid content.

  If it is determined that the content is not paid content (if NO is determined in step S124), and if it is determined that the paid content is already settled (if YES is determined in step S125), in step S126 The control unit reads the content data of the content from the content storage unit 435 so as to display the selected content, and controls the content to be reproduced on the display unit 415 and the speaker based on the content data. In the case of paid content, the content can be reproduced by decrypting the paid content with the DRM ticket that is the decryption key stored in the storage unit.

  Also, when it is determined that the area of the installation area ID is not included in the area of the distribution area ID of the selected content (when NO is determined in step S123), the control unit, in step S127, Control is performed to display on the display unit 415 that it is not a delivery area.

  If it is determined that the charge for the paid content has not been settled (NO in step S125), the control unit has settled the charge for viewing the selected content in step S128. The display unit 415 is controlled to display that there is no information.

  When it is determined that the content is not selected for viewing (when NO is determined in step S102), and after each of steps S126 to S128, the control unit ends the viewing selection display process. Then, the process to be executed is returned to the caller process of this process.

  By executing such viewing selection display processing, it is possible to exclusively control the display unit 415 and the speaker to reproduce the information related to terrestrial digital television broadcasting and the distributed and accumulated content. it can.

  In addition, when the area indicated by the installation area ID of the television receiver 410 is included in the area indicated by the distribution area ID attached to the content data, the content is reproduced, so that the content data further meets the needs of the area Can be provided. For example, if the area indicated by the distribution area ID is Tokyo 23 wards and the area indicated by the installation area ID is a town with Shibuya ward, the contents are reproduced because the Tokyo 23 wards include Shibuya ward.

  FIG. 9 is a table showing a comparison of quantitative effects obtained by the mass content delivery system 10 and the conventional method in this embodiment. Referring to FIG. 9, the data in this table is created based on the number of households and the population in Fukuyama City, Hiroshima Prefecture.

  As of the end of April 2009, the number of households in Fukuyama City was 185,105, and the population was 225,325 for men and 238,882 for women, for a total of 464,207.

  Regarding the reach that the content reaches the user by each media, the Internet has 100,882 households (= total number of households × broadband penetration 54%), 186,900 copies of flyers, and 35,000 Town magazines. Department, street distribution free paper 100,000 copies, posting free paper 120,000 copies, TVCM 185,105 (= total number of households x 100% penetration rate), mass content delivery 185,105 (= TVCM) Reach).

  As for the reach method to reach the user by each media, the Internet is delivered by the subscriber's pull (that is, on demand), the insert flyer is delivered by newspaper insert, Town magazine is a bookstore or convenience store Street distribution free paper is installed at convenience stores and supermarkets, posting free paper is posted and distributed, TVCM is broadcast on TV, and mass content delivery is distributed using TV broadcast waves.

  As for the time for the contents to reach the user by each media, the Internet is timely, the insert flyer is daily, the town magazine is monthly, the street distribution free paper is monthly, the posting free paper is monthly, the TVCM is timely, the mass content delivery is timely Alternatively, every predetermined period can be selected.

  As for the corporate cost to reach the user with the contents by each media, the Internet is content production cost + server operation fee, the insert flyer is insert fee (504,630 yen) + printing fee + design fee, Town magazine is 4C1P (Full color 1 page) 220,000 yen, street distribution free paper is 4C1P 725,000 yen, posting free paper is 4C1P 1,200,000 yen, TVCM is broadcasting fee + production fee, mass content delivery is transmission fee + A production fee is required.

  As for the user cost for the user to obtain the contents according to each media, the Internet is a communication fee + usage fee (for example, 5,000 yen / month), and the insert flyer is a subscription fee for a newspaper morning edition (for example, 3,070 yen / month). ), Town Magazine, for example, 390 yen, free street distribution free paper, free posting free paper, free TVCM, free mass content delivery.

  For each media target, the Internet is more literate (capability available), insert flyers are newspaper subscribers, Town magazines are men and women in their 20s and 30s, street distribution free paper is men and women in their 20s and 30s, posting free Paper is a housewife group, TVCM is a different target depending on the program and time, and mass content delivery is an all target.

  FIG. 10 is a table showing a comparison of qualitative effects obtained by the mass content delivery system 10 and the conventional method in this embodiment.

  Referring to FIG. 10, regarding the characteristics of each media, the TVCM can make TV viewers recognize information (mainly products etc.), and paper media (flyers / magazines) It excels at deploying information only in specific areas, the Internet (PCs and mobile phones) excels at distributing information uniformly and over a wide area, and digital signage is located in specific areas. By installing it, it is possible for people who visit the place to recognize information, and mass content delivery is very superior to other media in spreading information throughout a specific area .

  As for the information distribution format of each media, TVCM is PUSH type (distribution without request), paper media (flyers / magazines) is PULL type (distribution upon request), and the Internet (PC and mobile phone) is The PULL type, the digital signage is the PUSH type, and the mass content delivery is the PUSH type.

  Regarding the degree of achievement of each media, the degree of achievement of TVCM is high in reaching the audience at home, paper media (flyers) reach individual homes, and paper media (magazines) purchase Depending on the audience, the Internet (PCs and mobile phones) can obtain various (broad and detailed) information depending on the user's search. Digital signage depends on the degree of viewing of the signage screen, mass content Delivery is automatically distributed and can be distributed to all households.

  Regarding the influence factors among the reach of each media, the TV commercial is a few seconds in the broadcast time zone, the paper medium (flyer) requires a newspaper subscription contract, the paper medium (magazine) is an article It is an advertisement and is affected by the price of magazines. The Internet (computer and mobile phone) requires knowledge about search sites, etc. Digital signage is affected by the installation location and content, and mass content delivery is It is necessary to transmit in the free band of the broadcast wave.

  As for the distribution unit of each media's regional characteristics, TVCM is the service area of broadcast waves for each channel, paper media (flyers / magazines) are in units of municipalities and districts (town names), and the Internet (PC) can not be specified in the region, Internet (mobile phone) can be distributed in several prefectures only part of the information, digital signage is for each installation location, mass content delivery is the district town And can be distributed for each district (town name) unit.

  Regarding the distribution control of each media, TVCM is not possible, paper media (flyers / magazines) is possible, the Internet (PC) is not, the Internet (mobile phone) is not possible, Digital signage is possible and mass content delivery is possible.

  Regarding the visibility of each media quality, TVCM has restrictions on the number of airing seconds and depends on the viewer's perception, and paper media (flyers and magazines) have a certain amount of information (depending on the paper) ) There are restrictions, the Internet (PC) can also use moving images, the Internet (mobile phone) has display restrictions depending on the screen size, the digital signage can also use moving images, etc. Also, videos can be used.

  Of the quality of each media, regarding the creative nature, TVCM is only video and audio, paper media (flyers and magazines) are only on the magazine, and the Internet (computer) is diverse in expressiveness. The Internet (mobile phone) is almost the same as a personal computer, but there are some restrictions. Digital signage has diversity in expressiveness, and mass content delivery has diversity in expressiveness.

  Regarding the operability of the quality of each media, TVCM is only TV operation, paper media (flyers / magazines) do not need any operation, Internet (PC) requires IT literacy, Internet (Cellular phone) requires a certain level of operation knowledge, and digital signage requires no particular operation (in the case of cooperation with a non-contact type IC card or a non-contact type IC chip-equipped device). Content delivery is only a simple TV operation.

  Of the cost of each media, as for infrastructure facilities, TVCM is expensive for broadcasting facilities, paper media (flyers / magazines) is expensive for printing facilities, and the Internet (PCs and mobile phones) has communication facilities. It is expensive and mass content delivery uses existing equipment and requires no additional investment.

  Of the cost of each media, for information equipment, TVCM is expensive for various equipment, and the Internet (PC and mobile phone) is only a PC, server, etc., and is relatively inexpensive. Digital signage is a display Such video equipment is expensive, and mass content delivery is relatively inexpensive because it is only a distribution additional equipment.

  Of the cost of each media, the cost of creating advertisements varies depending on the plan for TVCM, paper media (flyers / magazines) is only a few yen per sheet, and the Internet (computer and mobile phone) is planned. Depending on the plan, digital signage will vary depending on the plan, and mass content delivery can be produced at a relatively low cost.

  Regarding the information acquisition cost among the costs of each media, TV commercials are free to receive commercials on private broadcasts, paper media (flyers and magazines) require newspaper subscription fees, etc. The Internet (computer) is , Line contracts and ISP (Internet Services Provider) usage fees are required, Internet (cell phones) require line contracts and packet charges, digital signage is free to view content, and mass content delivery is Data reception is free.

  As for the resource saving of each media, since the TVCM is only electronic information, it does not consume paper and ink, and the paper medium (flyers / magazines) consumes a large amount of paper and ink. Since the mobile phone is only electronic information, it does not consume paper and ink, and the digital signage is only electronic information, so it does not consume paper and ink, and the mass content delivery is only electronic information. Does not consume paper and ink.

  As for the evaluation rank of information senders of each media, TVCM is second place, paper media (flyers / magazines) is first place, Internet (PC) is third place, Internet (mobile phone) is 4th place. Digital signage and mass content delivery are TBD (to be determined).

  As for the evaluation order of information recipients of each media, TVCM is 4th, paper media (flyers / magazines) is 1st, the Internet (PC) is 2nd, and the Internet (mobile phone) is 3rd. Digital signage and mass content delivery are TBD (to be determined).

  Comprehensive evaluation of the comparison results for each of the above items (evaluation based on four levels: excellent, good, acceptable, and unacceptable), TVCM is acceptable as a media quality, and paper media (flyers / magazines) are acceptable. Internet (personal computer) is acceptable, Internet (mobile phone) is acceptable, digital signage is good to good, and mass content delivery is excellent.

  As described above, according to the mass content delivery system 10 of the present embodiment, the content collection server 210 and the content collection server 210 and the content provider server 100, the content aggregator 200, and the transmission side system including the devices provided in the broadcast station 300 are used. MPEG-2TS related to digital terrestrial television broadcasting such as full-segment broadcasting programs and CMs, one-seg broadcasting programs and CMs, and data broadcasting, and EPG data in distribution management server 220 A plurality of pieces of content data to be distributed to a plurality of consumers 400 are managed together with the broadcast of the format broadcast data, and a plurality of managed components managed by the protocol conversion server 230, the IP encapsulation device 240, and the distribution data distribution device 250 are managed. Is converted into MPEG-2TS format conversion data in the same format as the broadcast data, and broadcast data supplied from the outside by the multiplexing device 320, the encryption device 330, and the transmission device 340, and the converted conversion data Is multiplexed to generate multiplexed data, and the generated multiplexed data is transmitted to be a broadcast signal, and the broadcast signal is broadcast on the channel.

  Also, the television receiver 410 provided in the consumer 400 which is the receiving side system of the mass content delivery system 10 receives the broadcast signal transmitted from the transmitting side system, is restored to the multiplexed data, and is restored. The broadcast data and the conversion data are separated from the converted data, the content data is decoded from the separated conversion data, the decoded content data is stored, and the process for reproducing the content indicated by the stored content data is performed. Executed.

  Thus, content data is transmitted as a part of the broadcast signal to be transmitted. As a result, the mass content delivery system 10 can more easily transmit content data using broadcast waves.

  In the above-described embodiment, a plurality of broadcast stations of the transmission side system transmit broadcast signals on the respective channels, and the television receiver 410 transmits the broadcast transmitted from the transmission side system on any of the plurality of channels. Described as receiving a signal. However, in this way, one broadcast station of the transmission side system transmits a broadcast signal on the channel, and the television receiver 410 receives a broadcast signal transmitted from the transmission side system on the channel. Also good.

  Multiplexer 320, encryption device 330, and transmission device 340 are provided for each of a plurality of channels for transmitting broadcast data. Also, the television receiver 410 receives a broadcast signal transmitted from the transmission-side system on any of a plurality of channels, and restores the multiplexed data.

  In this way, the same content data is transmitted to the receiving system in any of the plurality of channels. As a result, the content data can be transmitted with a high reachability by the transmission side system of the mass content delivery system 10.

  Furthermore, the conversion data is transferred from the distribution data distribution device 250 to the multiplexing device 320 so that the content data included in the broadcast signal can be transmitted by broadcast communication with the transmission device 340 for a plurality of channels. The multiplexed data is delivered from 320 to the encryption device 330 and the transmission device 340, and the transmission devices 340 of a plurality of channels broadcast broadcast signals so as to transmit content data by broadcast communication.

  Thus, the same content data is transmitted to the television receiver 410 of the receiving system at the same timing in any channel. As a result, the content data can be transmitted at a higher arrival rate by the transmission side system of the mass content delivery system 10.

  Furthermore, the content data is multiplexed with the broadcast data repeatedly for a predetermined time by the multiplexing device 320, and the operation of switching the channel is received by the television receiver 410, and the operation of switching the channel while receiving the broadcast signal. When a part of the content data before switching has not been received, the error correction / restoration unit 432 of the television receiver 410 executes processing for acquiring the part received after switching. .

  As described above, when the television receiver 410 receives an operation of switching the channel while receiving the broadcast signal, when a part of the content data before the switching is not received, it is repeatedly multiplexed with the broadcast signal. The process of acquiring the part received after switching is executed from the content data. As a result, content data can be received more reliably by the television receiver 410.

  Furthermore, the content data is divided by the protocol conversion server 230 and converted into converted data that is packet data, and information indicating the size of the original content data and information indicating the order of the respective packet data are included in the converted data. The added television receiver 410 obtains the conversion data in the order not received and concatenates the conversion data based on the order added to the conversion data, thereby decoding the content data. As a result, the content data can be received more reliably by the television receiver 410.

  Further, the multiplexing device 320 multiplexes by including an identification ID (PID) for reception control for enabling the television receiver 410 to identify that the data is converted data.

  As described above, when the television receiver 410 separates the conversion data of the content data from the multiplexed data, the television receiver 410 can be surely identified as the conversion data of the content data.

  Also, the conversion data is identified and separated by the television receiver 410 based on the identification ID (PID) for reception control for enabling identification of the conversion data of the content data included in the multiplexed data. Is done.

  Thus, when the television receiver 410 separates the converted data of the content data from the multiplexed data, it can be reliably identified that the data is the converted data of the content data.

Next, modifications, feature points, and the like of the embodiment described above are listed below.
(1-1) The content described in the above embodiment can be understood as the following invention. A mass content delivery system for delivering content using broadcast waves for broadcasting programs and commercial messages, the content supply means for supplying the same content to a plurality of broadcasting stations, owned by the viewer, Receiving and broadcasting means for receiving and broadcasting a program and commercial message broadcasted from a broadcasting station and the content, and each of the plurality of broadcasting stations receives the content supplied from the content supply means and the program and Distribution means for distributing using commercial waves together with a commercial message is provided, the content is storage-type content, and the reception and broadcasting means is a separation means for separating the content from the received program and commercial message; Once the content separated by the separation means Comprising a content storage means for a product, and content reproducing means for reproducing a content stored by the content storage means, the mass content delivery system.

  According to the present invention, content is transmitted as part of a broadcast wave transmitted from each broadcast station. In addition, the same content is transmitted from any of a plurality of broadcasting stations. As a result, content can be transmitted more easily using broadcast waves.

  For example, as described in the above-described embodiment, the mass content delivery system 10 distributes content data using broadcast waves that broadcast programs and CMs. The same content data is supplied to the plurality of broadcasting stations 300 by the content supply computer 110 of the content supplier 100 via the system of the aggregator 200. A television receiver 410 owned by the consumer 400 receives and broadcasts a program, CM, and content data broadcast from the broadcasting station 300. The content data supplied from the content supply computer 110 of the content supplier 100 is distributed together with programs and CMs using broadcast waves by the systems of the plurality of broadcast stations 300. The content data is not the streaming-type content data that is sequentially used every time it is sent, but the storage-type content data that is stored once and then used. The television receiver 410 separates content data from the received program and CM, the separated content data is temporarily stored in the content storage unit 435, and the stored content data is reproduced.

  (1-2) Preferably, the invention described in (1-1) described above may be further configured as follows. The mass content delivery system distributes the distribution consideration aggregated by the distribution consideration aggregation means to a plurality of the broadcasting stations, and aggregates the distribution consideration for the distribution of the content from the content supplier. And a consideration distribution unit.

  According to the present invention, consideration for content distribution can be collected from the content supplier and distributed to the broadcasting station. As a result, incentives for content distribution can be given to broadcasting stations.

  For example, as described with reference to FIG. 1 of the above-described embodiment, the content data distribution fee is determined according to the amount of content data received from the content provider 100 by the computer installed in the aggregator 200. The data is aggregated every 100 and distributed to each of the plurality of broadcasting stations 300.

  (1-3) Preferably, the invention described in (1-1) described above may be further configured as follows. The mass content delivery system is used by the viewer to supply paid content that is owned by the viewer and needs to be paid for use among the content stored in the storage means. The content reproduction means further comprises a payment means for executing the payment for the usage fee, and the content reproduction means performs the payment for the usage fee for using the paid content by the payment means when the reproduction target is the paid content. The mass content delivery system reproduces the paid content on the condition that it has been executed, and the mass content delivery system aggregates the usage consideration settled by the settlement means for each of the paid content, and the usage consideration aggregation means The usage fee aggregated for each paid content by the paid content Further comprising a usage fee payment means to pay the supplier that provided the Ntsu.

  According to the present invention, a fee is paid for the provision of paid content such as a newspaper, so that it is possible for the content supplier to obtain the fee as in the case where the paid content is provided by paper. it can.

  For example, as described in step S124 to step S126 of FIG. 8 in the above-described embodiment, in the mass content delivery system 10, the television receiver 410 owned by the consumer 400 or the computer is used by the television receiver 410. When using paid content among the content data stored in the content storage unit 435, payment of a fee with the content supplier 100 that supplies the paid content is executed. When the reproduction target is paid content by the television receiver 410, the paid content is reproduced on the condition that the fee payment for using the paid content has been executed. The settlement server of the aggregator 200 aggregates the settled charges for each pay content and pays the charges collected for each pay content to the content provider 100 that provided the pay content.

  (1-4) Preferably, the above-described invention described in (1-1) may be further regarded as configured as follows. The distribution means is in a state where the content can be reproduced by the receiving and broadcasting means including the separation means, the content accumulation means, and the content reproduction means, and the separation means, the content accumulation means, and the content reproduction means. The content is distributed in a state in which the content cannot be reproduced by means for broadcasting the program and commercial message that do not include the message.

  According to the present invention, when a configuration for receiving and storing content is provided, the content can be played back. When a configuration for receiving and storing content is not provided, the content can be played back. It can be impossible.

  For example, the television receiver 410 having the configuration from the identification ID determination unit 421 to the content reading unit 442 of the television receiver 410 described in FIG. The receiver cannot reproduce the content.

  (1-5) Preferably, the above-described invention described in (1-1) may be further regarded as configured as follows. The distribution means repeatedly distributes the content for a predetermined period of time together with the program and commercial message, and the reception broadcast means further receives a channel so as to receive the program and commercial message of another broadcast station. When an operation accepting unit that accepts an operation for switching the channel and an operation for switching a channel by the operation accepting unit while receiving the content, if a part of the content before the switching is not received, it is received after the switching. Re-acquisition processing means for executing processing for acquiring the part.

  According to the present invention, when an operation for switching a channel is received during reception of a broadcast signal by the receiving and broadcasting means of the mass content delivery system, when a part of the content before the switching is not received, the reception is performed after the switching. The process of acquiring the part to be performed is executed. As a result, the content can be received more reliably by the receiving and broadcasting means of the mass content delivery system.

  For example, as shown in the description of the error correction / restoration unit 432 in FIG. 7 of the above-described embodiment, content data is transmitted by broadcast communication from a plurality of broadcasting stations. When the channel is switched to the broadcasting station of the channel, the error correction / restoration unit 432 receives not only the FEC data included in the packet data received from the broadcasting station of one channel but also the packet received from the broadcasting station of another channel. Using the FEC data included in the data, the partial content data that failed to be received is restored.

  (1-6) Preferably, the invention described in (1-1) described above may be further configured as follows. The content is local content distributed to a predetermined area. According to the present invention, it is possible to distribute content that meets the needs of the local area.

  For example, even if a leaflet, which is content data from a content supplier 100 such as a local store, is distributed to a region other than the region, there is not much merit, but if distributed to a predetermined region, the content provider 100 and the consumer It is possible to provide a flyer that is content data that meets any of the 400 needs.

  (2) The content data distribution rate is obtained by adding the audience rating of each broadcasting station, and the content data usage rate is multiplied by the content data usage rate. According to the content delivery system, the arrival rate of content data can be improved as compared with the case of distribution by one broadcasting station.

  (3) In order to improve the arrival rate in this way, the same content data is distributed at the same timing by a plurality of broadcasting stations. Such a thing can be considered to be possible even with conventional data broadcasting. However, when the same content data is distributed by data broadcasting of a plurality of broadcasting stations, the content data display in the data broadcasting and the main broadcasting display are displayed at the same time. Therefore, the content of the content data and the sponsor of the main broadcasting are displayed. There is a risk of competition. In order to avoid such competition, it is necessary to select content data that does not cause a disadvantage to the sponsor of the main broadcast of each broadcast station. In the present situation where the number of channels is increased, this selection becomes more difficult. Therefore, according to the mass content delivery system 10 of the present embodiment, as described with reference to FIG. 8, the system is configured such that the main broadcast and the content data cannot be reproduced simultaneously as the accumulation type content data. As a result, it is possible to prevent a disadvantage from occurring in the sponsor of the main broadcast.

  (4) In a television receiver that does not support the conventional high-definition method, when information with a large amount of characters such as newspapers and leaflets is displayed, the characters are crushed and the characters cannot be read. However, since the television receiver 410 for digital terrestrial television broadcasting that supports the high-definition system has high resolution, even if information with a large amount of characters such as newspapers and leaflets is displayed, the characters are displayed in a readable manner for the user. be able to.

  (5) Conventionally, the trend toward multi-channels has been the mainstream in both the government and private sector. However, there was a problem that the CM revenue of broadcasting stations decreased due to the influence of multi-channels, and pressured the management of broadcasting stations and advertising agencies. According to the mass content delivery system of the present embodiment, even in a situation where the number of channels is increased, in addition to the conventional CM revenue, the consideration for distribution of content data is added. Can be increased.

  (6) In recent years, advertising media such as televisions, newspapers, flyers and the like have decreased in advertising costs, while advertising media on the Internet have increased advertising costs. According to the mass content delivery system in the present embodiment, the content provider 100 such as a newspaper, a flyer, etc. can increase the reach, so that the advertising cost can be increased, and the television broadcasting station 300 Can be used as a new source of income for the distribution of content data such as newspapers and leaflets.

  (7) According to the mass content delivery system 10 in the above-described embodiment, information different from the broadcast content is pushed from the transmission side by using conventional broadcasting facilities (transmission to reception) of digital terrestrial television broadcasting. Thus, the program and CM can be transmitted without interruption.

  (8) According to the mass content delivery system 10 in the above-described embodiment, since it is a terrestrial digital television broadcast and a prefectural area broadcast, the consumer 400 can store only the content data of its own prefectural area. For this reason, by distributing content data having strong regional characteristics, it is possible to distribute content data that better meets the needs of the region.

  (9) In the above-described embodiment, as described in step S123 in FIG. 8, the area indicated by the installation area ID of the television receiver 410 is located in the area indicated by the distribution area ID attached to the content data. If it is included, the content indicated by the content data is reproduced in step S126.

  However, the present invention is not limited to this, and when the content data is received by the receiving system (for example, the television receiver 410), the area indicated by the installation area ID is indicated by the distribution area ID attached to the content data. The content data may be stored in the content storage unit 435.

  In this way, it is possible to distribute content data that further meets local needs.

  (10) Further, as shown in (9) above, the function of the television receiver 410 and the GPS (Global Positioning System) function are included in a movable device such as a portable terminal or a car navigation system. A region that changes according to movement specified by GPS is included in the region indicated by the distribution region ID attached to the content data by distributing the content data with the distribution region ID attached to the content data. In this case, the content data may be stored in the content storage unit 435.

  In this way, even when the user moves with a movable device, the user can receive content data that meets the needs of the destination area.

  Further, the above-described movable device is configured such that a default region ID indicating a region of a base (for example, a home) used for the movable device can be set, and the region indicated by the default region ID is content data. The content data may be stored in the content storage unit 435 even when it is included in the region indicated by the distribution region ID attached to.

  In this way, it is possible not only to receive content data that meets the needs of the destination area, but also to receive content data that meets the needs of the area of the usual base.

  In this way, it is possible to distribute content data suitable for the area where the user is moving.

  (11) The distribution schedule of content data as shown in FIG. 4 is distributed as content data so that reception of content data can be reserved, and when the reservation time comes, the television receiver 410 Even when is not in the on state, content data may be received. Thereby, even when the user is not viewing the program on the television receiver 410, desired content data can be received.

  Further, when the scheduled delivery time of the content data reserved for reception is changed, the reservation time may be changed. Thus, desired content data can be reliably received.

  (12) In the above-described embodiment, when a part of the content data is not yet received and the channel is switched to another channel, it is a continuation of the content data transmitted on the other channel. To receive the part. Thereby, the part received after channel switching can be acquired.

  In the above-described embodiment, the content data is repeatedly transmitted for a predetermined time. Therefore, even when the reception of the part that should be received immediately after the channel switching fails, The part can be received at the timing of the next repeated transmission.

  (13) As content data, data of combinations (for example, (domestic beef, 100 g, 300 yen), (carrot, 1 piece, 100 yen), etc.) of product types, quantities, and prices are distributed from each store. In this way, the television receiver 410 may generate and display a comparison table of combinations of the amount and price of each store for each type of product. Thus, the consumer 400 can check which store is cheaper.

  In addition, in a store, there may be a time sale that sells products at a price lower than the price at other times. Such time sale information can also be transmitted as content data. Then, the television receiver 410 may generate and display a comparison table of combinations of product quantities and prices that also take into account time sale information.

  Furthermore, the television receiver 410 may display information relating to the comparison result, for example, the comparison result information and the cheapest product information in a two-dimensional code readable by the mobile terminal. As a result, the consumer 400 can read the information indicated by the two-dimensional code on the mobile terminal and display the information on the mobile terminal at the time of shopping, which can be used for shopping.

  (14) In the above-described embodiment, the aggregator 200 delivers content data to each broadcasting station 300. However, the present invention is not limited to this, and the content data may be delivered to each broadcasting station 300 via the secretariat.

  (15) In the above-described embodiment, the receiving system of the mass content delivery system 10 is the television receiver 410. However, the present invention is not limited to this, and playback is performed using an STB (Set Top Box) and an STB. May be configured with a monitor (for example, a conventional television receiver) that displays the recorded content, or may be configured with a computer such as a PC (Personal Computer). .

  (16) In the above-described embodiment, the content data is distributed within the broadcast time. However, the present invention is not limited to this, and content data may be distributed outside the broadcast time. In this case, when the content data reserved for reception in advance is distributed, or when the area indicated by the distribution area ID includes the area indicated by the installation area ID, the television receiver 410 is activated and distributed. The content data may be stored.

  In this way, since broadcast data is not transmitted, a wider bandwidth can be used for distribution of content data, so that more content data can be transmitted.

  (17) In the above-described embodiment, the content data is reproduced when the area indicated by the installation area ID is included in the area indicated by the distribution area ID.

  However, the present invention is not limited to this. Preference data that can specify the consumer's favorite field is stored in advance in the television receiver 410, and data that can specify the field of the content data is distributed when the content data is distributed. When the field indicated by the content data transmitted and attached is included in the field indicated by the preference data, the content data may be reproducible.

  In addition, preference data that can specify a field that consumers prefer is stored in advance in the television receiver 410, and when content data is distributed, data that can specify the field of the content data is attached and transmitted. If the field indicated by the received content data is included in the field indicated by the preference data, the content data may be stored.

  (18) In the above-described embodiment, the installation area ID is set in advance. In addition to this, for example, an ID of a region where the user wants to know information on a region such as a region where the workplace is located or a region where the user frequently visits may be set.

  For example, a postal code or an address of a place to be registered is input to the television receiver 410, and the television receiver 410 identifies a region ID based on information indicating the location, and the identified region ID is the television receiver. 410 may be stored.

  Further, longitude / latitude information is acquired at a location desired to be registered by a mobile phone with a GPS function, and the longitude / latitude information is transmitted to the television receiver 410 or an external server and stored in advance in the television receiver 410 or external longitude. The area ID of the place may be specified based on the database indicating the correspondence between the latitude information and the area ID, and the specified area ID may be stored in the television receiver 410.

  Thereby, not only the content data of the area where the television receiver 410 is installed, but also the content data of the area where you want to know the information of the area can be obtained. Further, the mass content delivery system 10 further provides useful content data. Can be obtained.

  (19) In the embodiment described above, a time zone in which each broadcast station distributes common content data and a time zone in which each broadcast station distributes unique content data are provided. In this case, in a receiving side system such as the television receiver 410, an indicator or the like indicates whether the content data currently being received is content data common to each broadcast station or content data unique to each broadcast station. You may make it display.

  As a result, the consumer 400 cannot receive the content data being received until the end when switching to the channel of the other broadcast station when each broadcast station distributes its own content data. It can be recognized that playback is impossible.

  (20) The types of content distributed by the mass content delivery system 10 include those that cannot be received depending on the performance of the receiving device. That is, the content is not limited to content that can be received by all receiving devices, but includes content that can be received only by a certain high-performance receiving device.

  As a result, it is possible to distribute a wide variety of contents without being restricted by the minimum reception performance of the receiving device.

  (21) In the above-described embodiment, the mass content delivery system 10 has been described. However, the present invention is not limited to this, and can be understood as an invention of a transmission side system or a reception side system of the mass content delivery system 10. Further, it can be understood as an invention of a device group provided in the content provider 100, the aggregator 200, the broadcasting station 300, or the consumer 400 of the mass content delivery system 10 or an invention of each device. Moreover, it can be understood that the invention of the method or program executed by the television receiver 400 by the viewing selection display process described in FIG.

  (22) The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  10 mass content delivery system, 100 content supplier, 100A newspaper company, 100B company / shop / individual, 100C content supplier, 110 content supply computer, 200 aggregator, 210 content collection server, 211 content collection unit, 212 content registration unit, 213 content storage unit, 220 distribution management server, 221 content acquisition unit, 222 distribution scheduler registration unit, 223 distribution time determination unit, 224 content distribution unit, 230 protocol conversion server, 231 fixed length division processing unit, 232 error correction processing unit, 233 Communication protocol conversion unit, 240 IP encapsulation device, 241 Transmission band control unit, 242 UDP / IP packet adding unit, 243 Header compression unit, 244 Identification ID adding unit, 2 5 IP encapsulation unit, 246 MPEG-2TS conversion unit, 250 distribution data distribution device, 251 sending station setting unit, 300 broadcast station, 300 A A broadcast station, 300 B B broadcast station, 300 CC broadcast station, 310 broadcast supply equipment, 320 Multiplexer, 321 Distribution layer control unit, 322 TS multiplexing unit, 330 encryption device, 331 MULTI2 encryption unit, 340 transmission device, 341 OFDM modulation unit, 342 power amplification unit, 390 antenna, 400 consumer, 410 TV receiver 411 broadcast wave reception unit, 412 OFDM demodulation unit, 413 MULTI2 decoding unit, 414 multiplexed data separation unit, 415 display unit, 421 identification ID determination unit, 422 IP encapsulation decoding unit, 423 UDP / IP packet removal unit, 431 FLUTE decoding unit, 432 error Correction and restoration unit, 433 divided file combination processing unit, 434 transmission source file generation unit, 435 content storage unit, 441 content output instruction reception unit, 442 content reading unit, 451 TV broadcast decoding / playback unit, 490 antenna, 500 network.

Claims (9)

A content distribution system including a sending system and a receiving system,
The transmitting system is
A data management unit for managing a plurality of content data for distribution to a plurality of users together with broadcast of broadcast data of programs and commercial messages;
A protocol conversion unit that converts the plurality of content data managed by the data management unit into conversion data in a stream data format of a predetermined video compression format in the same format as the broadcast data;
A multiplexing unit that multiplexes the broadcast data supplied from the outside and the converted data converted by the protocol conversion unit to generate multiplexed data;
A transmission enabling unit for enabling transmission of the multiplexed data generated by the multiplexing unit to be a broadcast signal, and broadcasting the broadcast signal on a broadcast channel of broadcast data included in the broadcast signal;
The receiving system is:
A restoration unit that receives the broadcast signal transmitted from the transmission-side system and restores the multiplexed data;
A separation unit that separates the broadcast data and the converted data from the multiplexed data restored by the restoration unit;
A decoding unit for decoding the content data from the converted data separated by the separation unit;
An accumulation unit for accumulating the content data decrypted by the decryption unit;
A playback processing unit that executes processing for playing back the content indicated by the content data stored by the storage unit,
The multiplexing unit and the transmission enabling unit are provided for each of a plurality of channels for transmitting the broadcast data,
The restoration unit receives the broadcast signal transmitted from the transmission-side system on any of the plurality of channels, restores the multiplexed data,
The multiplexing unit repeatedly multiplexes the content data into the broadcast data for a predetermined time,
The receiving system further includes:
An operation receiving unit for receiving an operation of switching the channel;
When an operation for switching the channel is received by the operation reception unit while receiving the broadcast signal, if the part of the content data before the switching is not received, the part received after the switching is acquired. A content acquisition system including a reacquisition processing unit that executes processing to perform the processing. The protocol conversion unit divides the content data, converts the content data into the conversion data that is packet data, and includes information indicating the size of the original content data and information indicating the order of the packet data in the conversion data. Add
The reacquisition processing unit acquires the conversion data in an order not received,
The content distribution system according to claim 1, wherein the decrypting unit decrypts the content data by concatenating the converted data based on an order added to the converted data. A data management unit for managing a plurality of content data for distribution to a plurality of users together with broadcast of broadcast data of programs and commercial messages;
A protocol conversion unit that converts the plurality of content data managed by the data management unit into conversion data in a stream data format of a predetermined video compression format in the same format as the broadcast data;
A multiplexing unit that multiplexes the broadcast data supplied from the outside and the converted data converted by the protocol conversion unit to generate multiplexed data;
A transmission enabling unit for enabling transmission of the multiplexed data generated by the multiplexing unit to be a broadcast signal, and broadcasting the broadcast signal on a broadcast channel of broadcast data included in the broadcast signal;
The multiplexing unit and the transmission enabling unit are provided for each of a plurality of channels for transmitting the broadcast data,
The multiplexing unit is the content data, multiplexes a predetermined time, repeatedly, to the broadcast data,
The broadcast signal transmitted by the transmission enabling unit is received by any of the plurality of channels, restored to the multiplexed data, and the broadcast data and the converted data are obtained from the restored multiplexed data. The content data is decrypted from the separated converted data, the decrypted content data is stored, and a process for playing back the content indicated by the stored content data is executed,
A part of the content data acquired from the broadcast signal transmitted by the transmission enabling unit of any one of the plurality of channels is included in the plurality of channels during reception of the broadcast signal. The content distribution transmission side system which can be acquired from the broadcast signal received after the switching transmitted by the transmission enabling unit of the other channel when it is not acquired by switching to another channel .   The content distribution transmission side system according to claim 3, wherein the multiplexing unit multiplexes including identification information for enabling the reception side to identify the conversion data of the content data. Conversion in which broadcast signals transmitted from a content distribution transmission system are received and broadcast data of a predetermined video compression method and a plurality of content data for distribution to a plurality of users are converted into the predetermined video compression method A restoration unit for restoring the multiplexed data in which the data is multiplexed;
A separation unit that separates the broadcast data and the converted data from the multiplexed data restored by the restoration unit;
A decoding unit for decoding the content data from the converted data separated by the separation unit;
An accumulation unit for accumulating the content data decrypted by the decryption unit;
A playback processing unit that executes processing for playing back the content indicated by the content data stored by the storage unit,
The restoration unit receives the broadcast signal transmitted from the content distribution transmission side system in any of a plurality of channels for transmitting the broadcast data, and restores the multiplexed data,
The content data is repeatedly multiplexed with the broadcast data for a predetermined time in any of the broadcast signals of the plurality of channels,
further,
An operation receiving unit for receiving an operation of switching the channel;
When an operation for switching the channel is received by the operation reception unit while receiving the broadcast signal, if the part of the content data before the switching is not received, the part received after the switching is acquired. A content distribution receiving system including a reacquisition processing unit that executes a process to perform the processing. A display unit for displaying the program and the commercial message indicated by the broadcast data and the content;
The content delivery receiving system according to claim 5, wherein the reproduction processing unit executes a process of displaying the content on the display unit as a process for reproducing the content.   6. The content distribution reception according to claim 5, wherein the reproduction processing unit executes a process of outputting the content to the display device in order to display the content on an external display device as a process for reproducing the content. Side system.   6. The separation unit according to claim 5, wherein the separation unit identifies and separates the converted data based on identification information included in the multiplexed data to enable identification of the converted data of the content data. Item 8. The content distribution receiving system according to any one of Items 7 to 7. A content distribution method executed in a content distribution system including a transmission side system and a reception side system,
The sending system is
Managing a plurality of content data for distribution to a plurality of users together with broadcast of broadcast data of programs and commercial messages;
Converting the plurality of managed content data into converted data in a stream data format of a predetermined video compression format in the same format as the broadcast data;
Multiplexing the broadcast data supplied from the outside and the converted converted data to generate multiplexed data;
Enabling the generated multiplexed data to be transmitted as a broadcast signal, and broadcasting the broadcast signal on a broadcast channel of broadcast data included in the broadcast signal,
The receiving system is
Receiving the broadcast signal transmitted from the transmission-side system and restoring the multiplexed data;
Separating the broadcast data and the converted data from the restored multiplexed data;
Decrypting the content data from the separated converted data;
Storing the decrypted content data; and
Executing a process for reproducing the content indicated by the accumulated content data,
The step of generating the multiplexed data and the step of broadcasting the broadcast signal are executed for each of a plurality of channels for transmitting the broadcast data,
The step of restoring to the multiplexed data receives the broadcast signal transmitted from the transmission side system on any of the plurality of channels, and restores the multiplexed data,
The step of generating the multiplexed data repeats the content data for a predetermined time and multiplexes the broadcast data,
The receiving system further comprises:
Receiving an operation of switching the channel;
When an operation for switching the channel is received during reception of the broadcast signal, and a part of the content data before switching is not received, a process of acquiring the part received after switching is executed. And a content delivery method.

Images