JP2009049534A - Receiving terminal, receiving method, and information distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiving terminal capable of displaying a sufficient amount of additional information in earlier timing. <P>SOLUTION: The receiving terminal 10 includes a TV receiving system 110 for receiving broadcast signals and extracting a broadcast transport stream from the broadcast signals, a TS decoder 120 for filtering TS packets from the broadcast transport stream, an image processing section 130 for extracting video data from the TS packets, a CPU 290 for extracting program identifying information of the broadcast program from the TS packets and executing the process to extract additional information corresponding to the broadcast program using communication systems 230 to 280 of a cellular phone based on the program identifying information, and a displaying section 160 for displaying the additional information extracted based on the broadcast program and the program identifying information. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a receiving terminal and a receiving method for receiving a broadcast signal, and an information distribution system using these, and in particular, a receiving terminal for displaying additional information of a broadcast program together with the broadcast program, a reception method, and an information distribution. About the system.

  For example, Patent Document 1 discloses a technique for simultaneously displaying a video of a broadcast program being watched and a video of another broadcast program when viewing a television broadcast. The receiving terminal described in Patent Literature 1 includes two receiving systems that can individually receive broadcast signals, and displays broadcast programs acquired from the broadcast signals received by the respective receiving systems on the same screen. Thereby, the user can determine the switching destination after comparing and examining the contents of the broadcasting program as a switching destination candidate before switching the broadcast program to be viewed.

  By the way, in terrestrial digital broadcasting, a broadcasting service called “one seg” is implemented for portable terminals, and the spread of receiving terminals corresponding to one seg is rapidly progressing. One Seg uses one segment of 13 segments that constitute the frequency band of terrestrial digital broadcasting, and realizes stable reception quality instead of keeping image quality and sound quality low.

  It is desirable to be able to compare and examine broadcast program switching destination candidates even in one-segment receiver terminals. However, in the case of digital broadcasting, there is a problem that it takes time to switch the video display because it takes a certain amount of time to decode the video signal.

  Therefore, for example, Patent Document 2 discloses a technique for displaying a channel number of a broadcast program and a corresponding program name together with video display.

  In addition to video (video) data and audio (audio) data of broadcast programs, additional information related to broadcast programs (hereinafter referred to as “additional information”) is included in broadcast signals of various terrestrial digital broadcasts including 1Seg. Control information and data broadcasting data are included. The control information includes program specific information (PSI) and program arrangement information (service information: SI). The program specifying information is information for selecting a desired broadcast program on the receiving side, and the program arrangement information is information for convenience of program selection. An EIT (event information table), which is one piece of program arrangement information, describes the program name, broadcast date and time, and program content of a broadcast program. The data broadcast is a broadcast intended to provide a user with various information related to a broadcast program other than control information.

The receiving terminal described in Patent Literature 2 described above acquires a program name from an EIT included in a broadcast signal, and displays the acquired program name together with a channel number. As a result, the program name is quickly displayed after the reception of the broadcast signal is switched, and the user can comfortably perform the comparison examination of the switching destination candidates even in the terrestrial digital broadcasting. In addition, even when switching viewing of a normal broadcast program, it is possible to quickly confirm the program name of the switching destination.
JP-A-6-178227 JP 2007-36726 A

  However, in the receiving terminal described in Patent Document 2, since the program name is only displayed together with the channel number, the content of the broadcast program cannot be sufficiently shown, and the user can enjoy the broadcast program that suits his / her preference. There is a possibility that it is not possible to correctly determine whether or not it is a broadcast program intended by the user.

  As a method for solving this problem, for example, displaying other additional information acquired from a broadcast signal can be considered. However, there is an upper limit on the amount of additional information data that can be transmitted per unit time in the news wave of terrestrial digital broadcasting. Especially in the case of 1Seg, the information transmission rate is low, so additional information that can be transmitted per unit time. The amount of data is very limited. Therefore, it takes a certain amount of time for the additional information to be displayed after the reception of a sufficient amount of additional information to correctly convey the contents of the broadcast program to the user.

  The present invention has been made in view of such a point, and provides a receiving terminal, a receiving method, an information distribution server, and an information distribution system capable of displaying a sufficient amount of additional information at an earlier timing. Objective.

  The receiving terminal of the present invention is received by the broadcast signal receiving means for receiving a broadcast signal, the broadcast program acquiring means for acquiring a broadcast program from the broadcast signal received by the broadcast signal receiving means, and the broadcast signal receiving means. Program identification information acquisition means for acquiring program identification information of a broadcast program acquired by the broadcast program acquisition means from a broadcast signal, and additional information corresponding to the broadcast program acquired by the broadcast program acquisition means, the program identification information Based on the program identification information acquired by the acquisition means, additional information acquisition means for acquiring from other than the broadcast signal received by the broadcast signal reception means, the broadcast program acquired by the broadcast program acquisition means, and the additional information acquisition And a display means for displaying the additional information acquired by the means.

  The receiving method of the present invention includes a broadcast signal receiving step for receiving a broadcast signal, a broadcast program acquiring step for acquiring a broadcast program from the broadcast signal received in the broadcast signal receiving step, and the broadcast signal received in the broadcast signal receiving step. From the program identification information acquisition step, the program identification information acquisition step for acquiring the program identification information of the broadcast program acquired in the broadcast program acquisition step, and the additional information corresponding to the broadcast program acquired in the broadcast program acquisition step in the program identification information acquisition step Based on the acquired program identification information, the additional information acquisition step acquired from signals other than the broadcast signal received in the broadcast signal reception step, the broadcast program acquired in the broadcast program acquisition step, and acquired in the additional information acquisition step And a display step for displaying additional information.

  The information distribution system of the present invention is an information distribution system having an information distribution server and a receiving terminal, wherein the information distribution server stores additional information corresponding to a broadcast program, and program identification information of the broadcast program Information distribution means for distributing additional information stored in the additional information storage means in a manner other than a broadcast signal for broadcasting the broadcast program, wherein the receiving terminal receives a broadcast signal. Signal receiving means, broadcast program acquiring means for acquiring a broadcast program from the broadcast signal received by the broadcast signal receiving means, and program identification information of the broadcast program from the broadcast signal received by the broadcast signal receiving means Program information acquisition means and additional information corresponding to the broadcast program acquired by the broadcast program acquisition means as program identification information of the broadcast program And a display unit for displaying the broadcast program acquired by the broadcast program acquisition unit and the additional information acquired by the additional information acquisition unit. .

  According to the present invention, since the additional information corresponding to the broadcast program is acquired from other than the broadcast signal based on the program identification information, the additional information can be acquired exceeding the data amount that can be acquired per unit time by the broadcast signal. And a sufficient amount of additional information can be displayed at an earlier timing.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of an information distribution system according to an embodiment of the present invention. The present embodiment is an example applied to a mobile phone having a one-segment reception function.

  First, an outline of 1Seg will be described. In 1Seg, broadcast program video data (hereinafter referred to as “program video data”), audio data, and data broadcast data are transmitted with program identification information (PSI) and program arrangement information (SI) added. It is multiplexed into a port stream (transport stream: TS). In the network information table (network information table) included in the program identification information, a service ID (identifier) that is identification information of a broadcast program is described. The broadcast transport stream is subjected to predetermined digital modulation including error correction coding, further subjected to OFDM (orthogonal frequency division multiplexing) modulation, and transmitted from an antenna at a transmitting station. On the receiving side, a broadcast program can be arbitrarily selected by a combination of a physical channel and a logical channel.

  In FIG. 1, an information distribution system 1 includes a receiving terminal 10 that is a mobile phone having a one-seg receiving function, a mobile communication network 20 in which the receiving terminal 10 performs mobile phone communication, an Internet network 30, and a one-seg broadcasting station 40. And have.

  The receiving terminal 10 is connected to the mobile communication network 20 via the mobile base station 21. Further, the receiving terminal 10 can access the Internet network 30 via the mobile communication network 20 via a gateway device 31 that connects the mobile communication network 20 and the Internet network 30. Further, the receiving terminal 10 receives a one-segment broadcasting signal transmitted from the broadcasting station 40.

  Program additional information distribution servers 22-1 and 22-2 are arranged in the mobile communication network 20 and the Internet network 30, respectively. The program additional information distribution servers 22-1 and 22-2 are data (hereinafter referred to as “terminal display data”) for displaying additional information related to the broadcast program included in the broadcast signal transmitted from the broadcast station 40 on the receiving terminal 10. And various data related thereto are stored in a recording medium (not shown) such as a hard disk. The program additional information distribution server 22-1 is a server that distributes additional information uniquely prepared by a mobile terminal company, for example. The program additional information distribution server 22-2 is a server that distributes additional information created freely by general users.

  When the distribution of terminal display data is requested from the receiving terminal 10, the program additional information distribution servers 22-1 and 22-2 read out the corresponding terminal display data from the recording medium and distribute it to the receiving terminal 10. Details of data stored in the program additional information distribution servers 22-1 and 22-2 will be described later.

  FIG. 2 is a diagram showing the configuration of the receiving terminal 10 shown in FIG.

  In FIG. 2, the receiving terminal 10 includes a TV receiving system 110, a TS decoder 120, a video processing unit 130, a data broadcast processing unit 140, a display synthesis processing unit 150, a display unit 160, an audio processing unit 170, a synthesizer 180, a speaker amplifier. 190, speaker 200, microphone 210, microphone amplifier 220, communication data processing unit 230, modulation circuit 240, transmission circuit 250, telephone antenna unit 260, reception circuit 270, demodulation circuit 280, CPU (central processing unit) 290, nonvolatile memory 300 and a display image data generation unit 310.

  The TV receiving system 110 receives a one-segment broadcast signal and reproduces the original transport stream.

  The TV reception system 110 includes a TV antenna unit 111, a reception selection circuit 112, an OFDM demodulator 113, and a digital demodulator 114.

  The TV antenna unit 111 receives a one-segment broadcasting wave.

  The reception selection circuit 112 switches and selects a physical channel, and receives a one-segment broadcast signal via the TV antenna unit 111.

  The OFDM demodulator 113 performs OFDM demodulation on the reception data of the reception selection circuit 112.

  The digital demodulator 114 performs digital demodulation including error detection and error correction on the broadcast transport stream OFDM demodulated by the OFDM demodulator 113 and outputs an original transport stream composed of a plurality of transport packets.

  The TS decoder 120 generates program video data (Video), audio data (Audio), data broadcasting data (Data), subtitle data, program identification information (PSI), and the like from the transport stream reproduced by the TV receiving system 110. Separate TS packets such as program sequence information (SI). The program arrangement information (SI) includes data of an electronic program guide (EPG) which is a time table of each broadcast program.

  The video processing unit 130 performs processing such as image quality adjustment on the program video data received via the TV receiving system 110 and separated by the TS decoder 120.

  The data broadcasting processing unit 140 performs processing such as decoding processing and image data conversion on the data broadcasting data separated by the TS decoder 120.

  The display composition processing unit 150 includes program video data whose image quality has been adjusted by the video processing unit 130, video data generated by the data broadcast processing unit 140, display image data generated by the display image data generation unit 310 described later, and Are combined on a single screen to generate display data.

  The display unit 160 includes a liquid crystal display (not shown), and outputs the display data generated by the display composition processing unit 150 to the screen.

  The audio processing unit 170 performs processing such as sound quality adjustment and digital / analog conversion on the audio data separated by the TS decoder 120.

  The synthesizer 180 synthesizes the audio signal output from the audio processing unit 170 and the audio signal output from the communication data processing unit 230.

  The speaker 200 inputs the audio signal output from the synthesizer 180 via the speaker amplifier 190, converts it into sound, and outputs it.

  The microphone 210 receives voice, converts it into a voice signal, and outputs it to the communication data processing unit 230 via the microphone amplifier 220.

  The communication data processing unit 230 performs processing related to voice data, communication data, and communication control data (hereinafter collectively referred to as “communication data”) transmitted / received to / from the mobile communication network 20 shown in FIG.

  The modulation circuit 240 performs predetermined modulation processing on the communication data output from the communication data processing unit 230.

  The transmission circuit 250 is connected to the mobile communication network 20 via the telephone antenna unit 260 and transmits the communication data modulated by the modulation circuit 240.

  The receiving circuit 270 is connected to the mobile communication network 20 via the telephone antenna unit 260 and receives communication data addressed to its own terminal.

  Demodulation circuit 280 performs predetermined demodulation processing on the communication data received by reception circuit 270, and outputs the demodulated communication data to communication data processing unit 230.

  The CPU 290 executes a control program and controls the operation of each unit of the receiving terminal 10. In particular, the CPU 290 acquires terminal display data of additional information from the program additional information distribution server 22 at the same time as starting reception and reproduction of a broadcast program using the TV receiving system 110. Then, the CPU 290 immediately outputs the acquired terminal display data to the display image data generation unit 310.

  The nonvolatile memory 300 stores a control program executed by the CPU 290, information related to the location of the program additional information distribution server 22, and various information necessary for executing the control program.

  The display image data generation unit 310 performs processing such as decoding processing and video data conversion on terminal display data input from the CPU 290 to generate display image data that is image data of additional information, and the generated display image data Is output to the display composition processing unit 150.

  With the above configuration, when reception and reproduction of a broadcast program is started, a video of the broadcast program being viewed and a video of additional information of the broadcast program are displayed on the same screen.

  As described above, it takes time until the broadcast program video and the data broadcast video are actually displayed on the screen after the reception and reproduction of the broadcast program is started. On the other hand, when a mobile phone communication system is used, the information transmission rate is higher than when a broadcast signal is used, and complicated multiplexing and encoding are not required. Therefore, the time from when the terminal display data is requested to the program additional information distribution server 22 until the corresponding terminal display data is received and the additional information is displayed on the screen can be short. Therefore, the additional information can be displayed earlier than the video of the broadcast program or the video of the data broadcast.

  Here, prior to the description of the operation of the receiving terminal 10, the information stored in the program additional information distribution server 22 and the operation of the program additional information distribution server 22 will be described.

  FIG. 3 is a diagram illustrating the information stored in the program additional information distribution server 22 and the operation of the program additional information distribution server 22.

  As shown in FIG. 3, the program additional information distribution server 22 includes an electronic program guide (EPG) 221 included in a broadcast signal transmitted from the broadcast station 40 and individual broadcasts described in the electronic program guide (EPG) 221. An additional information list 222 created corresponding to the program and terminal display data of the additional information 223 of the broadcast program are stored.

  The additional information list 222 is a list of information types of additional information that can be distributed by the program additional information distribution server 22 for each program category of the broadcast program. For example, in the case of a broadcast program “NEWS-A” whose program category is news (NEWS), as shown in FIG. 3, “i.NEW content broadcast time table”, “ii. ”,“ Iii. Sports result content... Broadcast time ”,“ iv. Weather forecast content... Broadcast time ”, and“ v. Financial information content ... broadcast time ”are described.

  The terminal display data of the additional information 223 is data obtained by converting the additional information 223 for each broadcast program and each information type. For example, the terminal display data of the additional information 223 corresponding to the information type “i.NEW content broadcast time table” of the broadcast program “NEWS-A” includes contents such as “6:00-Diet deliberations pension problem”. It is.

  The program additional information distribution server 22 returns the terminal display data of the electronic program guide (EPG) 221, the additional information list 222, and the additional information 223 according to the request from the receiving terminal 10. At this time, when the additional information list 222 or terminal display data is requested by designating a broadcast program or program type, the corresponding additional information list 222 or terminal display data is returned.

  When the information type of the additional information 223 is common for each program category, only the additional information list 222 for each program category may be prepared. In this case, the program additional information distribution server 22 accepts only the designation of the program category with respect to the request for the additional information list 222. Hereinafter, in order to simplify the description, it is assumed that the information type of the additional information 223 is common for each program category.

  Further, when there is an increase or decrease in the program category of the broadcast program or an increase or decrease in the information type of the additional information 223 distributed for each program category, the additional information list 222 stored in the program additional information distribution server 22 is updated. Each time the additional information list 222 is updated, the program additional information distribution server 22 transmits a notification indicating that fact to the receiving terminal 10.

  Hereinafter, the operation of the receiving terminal 10 having the configuration of FIG. 2 will be described.

  Here, since the cellular phone function and the one-seg reception function are the same as those of the conventional one, description thereof will be omitted, and description will be made focusing on operations related to reception of terminal display data of the additional information 223 and video display.

  First, the receiving terminal 10 executes an initial setting process for performing an initial setting for displaying the additional information 223. This initial setting process is executed, for example, when application software for viewing 1Seg is first started or whenever an update notification of the additional information list 222 is received from the program additional information distribution server 22.

  FIG. 4 is a flowchart showing the flow of the initial setting process, which is executed by the CPU 290.

  First, in step S1100, the receiving terminal 10 accesses the program additional information distribution server 22 using a mobile phone communication system, and acquires the additional information list 222. Here, it is assumed that the additional information list 222 for all program categories is acquired.

  FIG. 5 is a diagram showing an example of the contents of the additional information list 222 acquired in step S1100 of FIG.

  As shown in FIG. 5, for example, the receiving terminal 10 is called “NEWS”, “Information Variety”, “Drama”, “Sport Relay”, “Movie”, “(Talk Quiz) Variety”, and “Documentary”. Seven additional information lists 222-1 to 222-7 are acquired. Each additional information list 222 describes a program category and an information type of the numbered additional information 223.

  Then, in step S1200 of FIG. 4, the receiving terminal 10 creates a user setting table in which the information type of the additional information 223 to be displayed is set in advance for each program category. Specifically, the receiving terminal 10 displays the acquired additional information list 222 one by one on the liquid crystal display, and accepts selection of the number assigned to the information type from the user by operating a key switch (not shown). . The receiving terminal 10 sets the information type corresponding to the selected number to the information type of the additional information 223 to be acquired in the currently displayed program category (hereinafter referred to as “acquired information type”), Create a user setting table that describes the association with the setting information.

  FIG. 6 is a diagram showing an example of the contents of the user setting table created in step S1200 of FIG.

  As shown in FIG. 6, the user setting table 410 includes a program category 411 and an acquisition information type 412 that is setting information. In the program category 411, the program category of the additional information list 222 is described. The acquisition information type 412 describes the acquisition information type corresponding to each program category. Here, for example, an acquisition information type 412 “i. Synopsis of this time” is described in association with the program category 411 “drama”. This indicates that when the user views a broadcast program whose program category is drama, he / she wishes to display additional information 223 regarding the synopsis of that time.

  In step S1300 in FIG. 4, the receiving terminal 10 stores the user setting table 410 created in step S1200 in the nonvolatile memory 300, and ends the series of processes.

  In this way, the user setting table 410 is stored in the receiving terminal 10 and the preparation for displaying the additional information 223 is completed.

  When the preparation for displaying the additional information 223 is completed, the receiving terminal 10 broadcasts the TV program using the TV receiving system 110 every time an icon is selected by operating a key switch, for example, to start viewing one seg. The additional information display processing for displaying the additional information is executed in conjunction with the reception of.

  As additional information display processing, a method of acquiring and accumulating additional information 223 for all receivable broadcast programs in advance and a method of sequentially acquiring additional information 223 every time a broadcast program to be viewed is switched. Can be considered. Here, first, additional information display processing in the case of pre-accumulation in which additional information is acquired and accumulated in advance will be described.

  FIG. 7 is a flowchart showing additional information display processing in the case of pre-accumulation, and is executed by the CPU 290.

  First, in step S2100, the receiving terminal 10 starts receiving broadcast signals in the TV receiving system 110 and separating broadcast transport streams in the TS decoder 120.

  FIG. 8 is a diagram illustrating a configuration of data that the receiving terminal 10 starts receiving in step S2100.

  As shown in FIG. 8, the broadcast transport stream (TS) 421 is composed of a 188-byte TS packet and 16-byte redundant data for error correction. Each TS packet 422 separated by the TV reception system 110 includes a transport stream (TS) header of 4 bytes or more including a packet identifier (PID), video data (Video), audio data (Audio), And data such as data broadcasting data (Data). The transport stream 423 includes a plurality of TS packets 422. The plurality of TS packets 422 store program identification information (PSI), program arrangement information (SI), video data (Video), audio data (Audio), or data broadcasting data (Data). Note that the transport stream 424 on IEEE 1394 has a configuration in which a header is added to each TS packet 422.

  Then, in step S2200 of FIG. 7, the receiving terminal 10 downloads the electronic program guide (EPG) 221 from the program additional information distribution server 22, and specifies the broadcast program currently being broadcast from the electronic program guide (EPG) 221. In addition, the program category of the broadcast program currently being broadcast is acquired.

  FIG. 9 is a diagram showing an example of the contents of the electronic program guide (EPG) 221 downloaded in step S2200 of FIG.

  As shown in FIG. 9, in the electronic program guide (EPG) 221, program identification information including the program name of the broadcast program in each time zone is associated with the broadcast station name assigned with the channel number for each broadcast station. is described. Each broadcast program is associated with a program category. A news program “NEWS-A” is described in a time zone from 6:00 to 7:00 of a broadcasting station “A station”. Therefore, when the process of step S2200 of FIG. 7 is performed at 6:10, at least the program category “NEWS” is specified.

  In step S2300 in FIG. 7, the receiving terminal 10 refers to the user setting table 410 illustrated in FIG. 6 and acquires the acquisition information type corresponding to the program category specified in step S2200. Then, the receiving terminal 10 transmits the acquired acquired information type to the program additional information distribution server 22 and downloads terminal display data of the corresponding additional information 223.

  For example, it is assumed that the program category “NEWS” is specified in step S2200 of FIG. In this case, in the user setting table 410 shown in FIG. 6, the acquired information type 412 “i.NEW content broadcast time table” is associated with the program category 411 “NEWS”. Therefore, in step S2300 of FIG. 7, the terminal display data of the additional information 223 of the information type “i.NEW content broadcast time table” is downloaded.

  In step S2400, the receiving terminal 10 uses the display image data generation unit 310 to generate display image data of the additional information 223 from the terminal display data downloaded in step S2300. The receiving terminal 10 stores the generated display image data in a memory (not shown) inside the display image data generation unit 310 in a state in which the display image data is associated with broadcast program identification information (hereinafter referred to as “program identification information”). Store. Thereby, display image data of the additional information 223 of the broadcast program currently being broadcast is prepared.

  In step S2500, the receiving terminal 10 acquires the program identification information of the broadcast program that has started reception from the control information separated by the TS decoder 120.

  In step S2600, the receiving terminal 10 uses the display image data generation unit 310 to read out the display image data of the additional information 223 corresponding to the program identification information acquired in step S2500 from the memory, and display the read display image data. The information is output to the processing unit 150 and the additional information 223 is displayed.

  In step S2700, receiving terminal 10 determines whether or not the channel has been switched, for example, by operating a key switch, that is, whether or not the broadcast program to be received has been switched. When the channel is switched (S2700: YES), the receiving terminal returns to step S2500 to display the additional information 223 of the new broadcast program, and when the channel is not switched (S2700: NO), The process proceeds to step S2800.

  In step S2800, receiving terminal 10 determines whether or not to end one-segment viewing, based on whether or not the end of one-segment viewing is instructed by operating a key switch. When ending the one-segment viewing (S2800: YES), the receiving terminal 10 ends the series of processes, and when continuing the one-segment viewing (S2800: NO), the receiving terminal 10 proceeds to step S2900.

  In step S2900, receiving terminal 10 determines whether or not a predetermined time has elapsed since the previous terminal display data download. If the predetermined time has not yet elapsed (S2900: NO), the receiving terminal 10 returns to step S2700. If the predetermined time has elapsed (S2900: YES), the receiving terminal 10 returns to step S2300 and displays the terminal. Download the data again. The predetermined time is preferably shorter than the time until the broadcast program corresponding to the terminal display data acquired in the previous download ends.

  By executing such additional information display processing, the additional information 223 can be displayed prior to the display of the broadcast program video or data broadcast when the channel is switched. The electronic program guide (EPG) 221 can be acquired from the broadcast signal control information of the broadcast signal, but it takes some time to complete the acquisition. Therefore, by acquiring the electronic program guide (EPG) 221 using the communication system of the mobile phone, the additional information 223 can be displayed at an early timing for the broadcast program that is initially selected.

  In order to display the additional information 223 of the first selected broadcast program at an earlier timing, for example, only the display image data of the first selected broadcast program is downloaded first and the additional information 223 is displayed. Then, the process after step S2200 is performed. In this case, the receiving terminal 10 specifies the program category from the control information of the broadcast signal. Moreover, you may make it acquire the electronic program guide (EPG) 221 from the control information of the broadcast signal of a broadcast signal.

  FIG. 10 is a diagram schematically showing how the additional information 223 is displayed by the above-described additional information display processing.

  As shown in FIG. 10, for example, when the process of step S2200 in FIG. 7 is performed at 6 o'clock, since a news program “NEWS-A” is included, a program category “NEWS” is specified. The Further, as described above, in the user setting table 410 illustrated in FIG. 6, the acquired information type 412 “i.NEW content broadcast time table” is associated with the program category 411 “NEWS”. Therefore, for example, during reception of the broadcast program NEWS-A of station A, additional information corresponding to the information type “i. NEW content broadcast time table” is displayed.

  Further, for example, when the process of step S2200 in FIG. 7 is performed at 8 o'clock, a drama program “drama A” is included, and therefore a program category “drama” is specified. Further, as described above, in the user setting table 410 illustrated in FIG. 6, the acquired information type 412 “i. Synopsis” is associated with the program category 411 “drama”. Therefore, for example, during reception of the broadcast program drama A of station A, additional information corresponding to the information type “i.

  Next, additional information display processing in the case of sequential acquisition in which additional information 223 is sequentially acquired every time a broadcast program to be viewed is switched will be described.

  FIG. 11 is a flowchart showing additional information display processing in the case of sequential acquisition, and corresponds to FIG. The same steps as those in FIG. 7 are denoted by the same step numbers, and description thereof will be omitted.

  In the case of sequential acquisition, the receiving terminal 10 starts receiving the broadcast signal and separating the broadcast transport stream in step S2100, and then proceeds to step S2500, and sets the program identification information of the broadcast program that has started reception as TS Obtained from the control information separated by the decoder 120.

  In step S2510, the receiving terminal 10 acquires the program category of the broadcast program being received from the program identification information acquired in step S2100. Specifically, for example, the receiving terminal 10 acquires the broadcast station name, program name, broadcast time, and program category of the broadcast program from the program arrangement information (SI).

  In step S2520, the receiving terminal 10 refers to the user setting table 410 shown in FIG. 6 to acquire the acquisition information type corresponding to the program category acquired in step S2510, and acquires the acquired acquisition information type and program identification information. Is transmitted to the program additional information distribution server 22 to download the terminal display data of the corresponding additional information.

  In step S2530, the receiving terminal 10 generates display image data from the terminal display data acquired in step S2520 by the display image data generation unit 310, and outputs the generated display image data to the display composition processing unit 150. The additional information 223 is displayed. Then, the receiving terminal 10 proceeds to the processing of steps S2700 to S2900, and when a predetermined time has elapsed since the previous downloading of the terminal display data (S2900: YES), the receiving terminal 10 returns to step S2520 and downloads the terminal display data again. To do.

  With such additional information display processing, the additional information 223 can be displayed prior to the display of the broadcast program video or data broadcast when the channel is switched.

  Here, for reference, a broadcast program reception process started in step S2100 of FIGS. 7 and 11 of the additional information display process will be described.

  FIG. 12 is a flowchart showing a flow of broadcast program reception processing.

  First, in step S3100, the receiving terminal 10 starts storing video data, audio data, and data broadcast data. Specifically, the receiving terminal 10 sequentially accumulates TS packets 422 storing video data, audio data, or caption data among the TS packets 422 separated by the TS decoder 120 in a PES (packetized elementary stream) buffer. Let In addition, the receiving terminal 10 sequentially accumulates TS packets 422 storing data of data broadcasting among the TS packets 422 separated by the TS decoder 120 in the section buffer.

  In step S3200, the receiving terminal 10 starts decoding the data accumulated in the PES buffer.

  In step S3300, the receiving terminal 10 displays the decoded video data, caption data, and audio data of the broadcast program in accordance with the PTS (presentation time stamp), which is the time information for synchronization, on the display unit 160 and Output at the timing synchronized with the speaker 200. The receiving terminal 10 displays the data broadcasting data stored in the section buffer by a data broadcasting browser such as a BML (broadcast markup language) browser through a DSM-CC data carousel receiving process.

  In step S3400, the receiving terminal 10 determines whether or not the channel has been switched. If the channel has been switched (S3400: YES), the process returns to step S3100 and the channel has not been switched. (S3400: NO), the process proceeds to step S3500.

  In step S3500, the receiving terminal 10 determines whether or not to end the one-segment viewing. If the one-segment viewing is continued (S3500: NO), the receiving terminal 10 returns to step S3400, and if the one-segment viewing ends (S3500). : YES), a series of processing ends.

  That is, in the broadcast program reception process, after storing a large number of packet data, decoding and synchronization processing is performed for video display, DSM-CC data carousel reception processing and browser display processing are performed for data broadcast display, and the like. Usually, it takes several seconds until the display of the video is started after the series of processes is completed. Therefore, the additional information display process described above allows the additional information to be displayed prior to the display of the broadcast program video or data broadcast during this time, thereby providing the user with a more comfortable viewing environment. .

  FIG. 13 is a diagram illustrating an example of a display screen immediately after switching channels.

  As described above, it takes time before the display of the broadcast program video and data broadcast is started. Therefore, immediately after the channel is switched, as shown in FIG. 13, in the broadcast area 431 for displaying the video based on the broadcast signal in the display screen 430, the video of the broadcast program and the data broadcast are not displayed. For example, characters such as “Preparing for 1Seg reception” are displayed. On the other hand, in the additional information area 432 for displaying the additional information, the additional information acquired using the mobile phone communication system is displayed at an early timing. As a result, the user can quickly grasp information about a broadcast program for which no video has been displayed yet from the display content of the additional information area 432.

  FIG. 14 is a diagram showing an example of a display screen when a sufficient time has elapsed after switching channels, and corresponds to FIG. In the broadcast area 431, the video of the broadcast program and the data broadcast are displayed.

  Conventionally, in data broadcasting, an item associated with a URI (uniform resource identifier) is displayed. On such a data broadcast display screen, by clicking any item by operating a key switch, additional information having contents corresponding to the item displayed from the corresponding URI can be acquired. However, the user has to perform an operation of selecting and clicking an item one by one, and there is a problem that additional information cannot be acquired until a data broadcast is displayed.

  FIG. 15 is a diagram illustrating an example of a conventional method for acquiring additional information for reference.

  On the display screen 430a of the conventional one-seg compatible portable terminal, after the display of the data broadcast is completed, a click operation on an item associated with the URI is accepted. When any item is clicked by a user operation, the location indicated by the corresponding URI of the mobile communication network 20 or the Internet network 30 is accessed using the communication system of the mobile phone, and additional information is downloaded. Then, the display screen 430a is switched to display the downloaded additional information. As described above, it can be seen that, in the conventional additional information acquisition, it takes time to display the additional information as well as the operation, as compared with the receiving terminal 10 of the present embodiment.

  That is, according to the receiving terminal 10 of the present embodiment, it is possible not only to display a sufficient amount of information related to a broadcast program at an earlier timing, but also to display additional information that matches the user's preference with less effort. Can do.

  A receiving terminal having a plurality of TV receiving systems each capable of receiving a broadcast signal independently can display a video of a back program. The present invention is also suitable for such a receiving terminal. It is. Especially on mobile devices, the video of the back program can only be displayed very small, so it is desirable to explain supplementary contents in text, but it is created assuming such a small area display. It is inappropriate to display unaccounted data broadcasts as explanations. Therefore, if additional information created on the assumption that content descriptions are displayed in a small area is acquired using the communication system of the mobile phone, additional information that matches the user's preference can be quickly obtained with less effort even for back programs. It is possible to display.

  FIG. 16 is a diagram showing an example of a state of the display screen 430 when the present invention is applied to the receiving terminal 10 capable of displaying back program information.

  The display screen 430 includes, for example, a video display area 433 for displaying the video of the broadcast program being viewed and an information display area 434 for displaying data broadcast or back program information. When the mode is switched to the mode for displaying the information of the back program, the video display area 433 displays the video of the back program and the additional information acquired using the communication system of the mobile phone. As shown in FIG. 16, even when the size of the video display area 433 is small, additional information assuming this can be acquired, and the user can easily grasp the contents of the back program. Further, when switching the back program to be displayed, the additional information can be displayed at a timing earlier than that of the data broadcast.

  The way of displaying the additional information is not limited to the contents shown in FIGS. For example, the additional information or the video of the back program may be displayed on a display unit (such as a sub liquid crystal) different from the broadcast program being viewed.

  As described above, according to the present embodiment, since the additional information is acquired using the mobile phone communication system instead of the broadcast signal, a sufficient amount of additional information can be displayed at an earlier timing. Channel selectivity can be improved. In addition, since the information type of additional information that suits the user's preference is set in advance for each program category, and the additional information of the set information type is acquired and displayed, an operation for selecting additional information at the time of channel switching Can be made unnecessary, and a more comfortable viewing environment can be provided to the user. In addition, when it has a function to display the back program, additional information acquired using the communication system of the mobile phone is displayed in association with the video of the back program, so that information more suitable for showing the contents of the back program is displayed. Can be displayed.

  Furthermore, since the additional information is acquired using the communication system of the mobile phone, various other additional information can be displayed instead of the information transmitted by the broadcast side of the broadcast program. Thereby, for example, various types of information such as a comment sentence created by a third party can be provided to the user in a form associated with the broadcast program being received. Therefore, the additional information provided to the user can be enriched and the added value of the broadcast service can be increased.

  In the present embodiment, terminal display data of additional information is stored in the program additional information distribution server and terminal display data is distributed from the program additional information distribution server. However, the present invention is not limited to this. For example, the program additional information distribution server side may store information indicating the storage location of the terminal display data, such as the URI of another server, and transmit the storage location of the terminal display data to the receiving terminal. In this case, the receiving terminal accesses the storage location of the received terminal display data and acquires the terminal display data.

  In addition, the additional information is not acquired from a specific program additional information distribution server, but the additional information is searched in the mobile communication network 20 and the Internet network 30 using the program name and the acquired information type as keywords, and the corresponding information is held. Additional information may be acquired from the program additional information distribution server. Thereby, for example, when the desired additional information does not exist in the program additional information distribution server 22-1 of the mobile communication network 20, but exists in the program additional information distribution server 22-2 of the Internet network 30, Desired additional information can be acquired from the program additional information distribution server 22-2.

  Also, when receiving data broadcasts that display items associated with URIs, the information type of the corresponding information is determined by text analysis of each item, and the item is selected from the information type based on the user setting table Then, the location indicated by the URI associated with the selected item may be accessed.

  In the present embodiment, the case where the additional information is acquired using the communication system of the mobile phone has been described. However, the present invention is not limited to this. For example, a wireless LAN (local area network) or the like can be used. Various methods that can acquire additional information can be applied.

  Further, although a case has been described with the present embodiment where the present invention is applied to a mobile phone having a one-segment reception function, the present invention is not limited to this. For example, the present invention relates to a broadcast program and program identification information such as a PDA (personal digital assistant) equipped with a one-segment reception function, a personal computer, and an in-vehicle television receiver that receives digital terrestrial broadcasting using a plurality of segments. It is applicable to various receiving terminals that receive broadcast signals including

  The reception terminal, reception method, and information distribution system according to the present invention are useful as a reception terminal, reception method, and information distribution system that can display a sufficient amount of additional information at an earlier timing.

The system block diagram which shows the structure of the information delivery system which concerns on one embodiment of this invention The block diagram which shows the structure of the receiving terminal which concerns on one embodiment of this invention Explanatory drawing which shows the information which the program additional information delivery server in this Embodiment stores, and operation | movement of a program additional information delivery server Flow chart showing the flow of initial setting processing in the present embodiment Explanatory drawing which shows the example of the content of the additional information list in this Embodiment Explanatory drawing which shows an example of the content of the user setting table in this Embodiment The flowchart which shows the additional information display process in the case of prior accumulation in this Embodiment Explanatory drawing which shows the structure of the data which the receiving terminal in this Embodiment starts reception Explanatory drawing which shows an example of the content of the electronic program guide in this Embodiment Explanatory drawing which showed typically a mode that additional information was displayed by the additional information display process in this Embodiment. The flowchart which shows the additional information display process in the case of sequential acquisition in this Embodiment The flowchart which shows the flow of the broadcast program reception process in this Embodiment. The top view which shows the example of the display screen immediately after switching the channel in this Embodiment The top view which shows the example of a display screen when sufficient time passes, switching the channel in this Embodiment Explanatory drawing which shows an example of the state of the conventional additional information acquisition as reference The top view which shows an example of the mode of the display screen at the time of applying this invention to the receiving terminal which can display the information of a back program

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information delivery system 10 Receiving terminal 20 Mobile communication network 21 Mobile base station 22 Program additional information delivery server 30 Internet network 31 Gateway apparatus 40 Broadcast station 110 TV receiving system 111 TV antenna part 112 Reception selection circuit 113 OFDM demodulator 114 Digital demodulation 120 TS decoder 130 Video processing unit 140 Data broadcast processing unit 150 Display synthesis processing unit 160 Display unit 170 Audio processing unit 180 Synthesizer 190 Speaker amplifier 200 Speaker 210 Microphone 220 Microphone amplifier 230 Communication data processing unit 240 Modulation circuit 250 Transmission circuit 260 Telephone antenna unit 270 receiving circuit 280 demodulating circuit 290 CPU
300 Non-volatile memory 310 Display image data generation unit

Claims (9)

Broadcast signal receiving means for receiving a broadcast signal;
Broadcast program acquisition means for acquiring a broadcast program from the broadcast signal received by the broadcast signal reception means;
Program identification information acquisition means for acquiring program identification information of the broadcast program acquired by the broadcast program acquisition means from the broadcast signal received by the broadcast signal reception means;
Acquiring additional information corresponding to the broadcast program acquired by the broadcast program acquisition means from other than the broadcast signal received by the broadcast signal reception means based on the program identification information acquired by the program identification information acquisition means Additional information acquisition means;
Display means for displaying the broadcast program acquired by the broadcast program acquisition means and the additional information acquired by the additional information acquisition means;
Receiving terminal. A communication network connection means connectable to a communication network to which the additional information is distributed;
The additional information acquisition means includes
Obtaining the additional information from the communication network via the communication network connection means;
The receiving terminal according to claim 1. A setting table for presetting the information type of the additional information to be displayed;
The additional information acquisition means includes
With reference to the setting table, additional information of the information type to be displayed is acquired.
The receiving terminal according to claim 1. The program identification information includes a program type of the broadcast program,
The setting table is
Set the information type for each program type,
The additional information acquisition means includes
With reference to the setting table, additional information corresponding to the program type is acquired.
The receiving terminal according to claim 3. An information type list acquisition means for acquiring an information type list in which the information type of the additional information is described for each program type;
A setting table creation unit that displays the information type list acquired by the information type list acquisition unit and receives a user setting of the setting table;
The receiving terminal according to claim 4. The additional information acquisition means includes
Additional information batch acquisition means for collectively acquiring a plurality of additional information corresponding to a plurality of broadcast programs;
Additional information storage means for storing a plurality of additional information acquired by the additional information batch acquisition means;
Additional information corresponding to the broadcast program acquired by the broadcast program acquisition unit based on the program identification information acquired by the program identification information acquisition unit from among the plurality of additional information stored in the additional information storage unit Storage additional information acquisition means for acquiring
The receiving terminal according to claim 2. The broadcast signal receiving means includes
First and second receiving means for independently receiving broadcast signals,
The display means includes
Displaying a broadcast program based on the broadcast signal received by the first receiving means, a broadcast program based on the broadcast signal received by the second receiving means, and additional information acquired by the additional information acquiring means;
The receiving terminal according to claim 1. A broadcast signal receiving step for receiving a broadcast signal;
A broadcast program acquisition step of acquiring a broadcast program from the broadcast signal received in the broadcast signal reception step;
From the broadcast signal received in the broadcast signal reception step, a program identification information acquisition step for acquiring program identification information of the broadcast program acquired in the broadcast program acquisition step;
Additional information corresponding to the broadcast program acquired in the broadcast program acquisition step is acquired from a signal other than the broadcast signal received in the broadcast signal reception step based on the program identification information acquired in the program identification information acquisition step. An information acquisition step;
A display step for displaying the broadcast program acquired in the broadcast program acquisition step and the additional information acquired in the additional information acquisition step;
Receiving method. In an information distribution system having an information distribution server and a receiving terminal,
The information distribution server is
Additional information storage means for storing additional information corresponding to a broadcast program, and additional information stored in the additional information storage means in association with program identification information of the broadcast program other than a broadcast signal for broadcasting the broadcast program And an information distribution means for distributing by
The receiving terminal is
Broadcast signal receiving means for receiving a broadcast signal, broadcast program acquiring means for acquiring a broadcast program from the broadcast signal received by the broadcast signal receiving means, and the broadcast program received from the broadcast signal received by the broadcast signal receiving means. Program information acquisition means for acquiring program identification information, and additional information acquisition means for acquiring additional information corresponding to the broadcast program acquired by the broadcast program acquisition means from the information distribution server based on the program identification information of the broadcast program And a display means for displaying the broadcast program acquired by the broadcast program acquisition means and the additional information acquired by the additional information acquisition means.

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