JP2011035628A - Keyword retrieval system, digital broadcast receiver, and keyword retrieval method - Google Patents

Abstract

A keyword search system, a digital broadcast receiver, and a keyword search method capable of easily searching for keywords related to a program being viewed.
A digital broadcast receiver in a keyword search system includes a keyword acquisition unit for acquiring a keyword from a server connected via a network, a character string compared with a keyword and a keyword included in program information of a broadcast program, and a keyword. A character string analysis unit that extracts matching keywords, a GUI control unit that displays matching keywords on the screen, and a browser that displays search information related to the matching keywords selected by the viewer from the matching keywords, The server includes a keyword storage unit that stores information on a keyword with a large number of searches or a keyword with a rapid increase in the number of searches, and a transmission unit that transmits keywords in response to a request from a digital broadcast receiver.
[Selection] Figure 2

Description

  The present invention relates to a keyword search system, a digital broadcast receiver, and a keyword search method for transmitting information via broadcast waves and a network.

  In recent years, digital broadcast receivers such as television sets have come to be equipped with many functions in addition to functions for receiving broadcast programs, and have communication functions via a network such as the Internet. Various information can be acquired.

  As a TV program recording / distributing system that realizes easy acquisition of TV program information of high user interest via a network, for example, program keyword information that matches user keyword information indicating word information of high user interest is obtained. A TV program recording / distributing system has been devised that extracts information related to a TV program that is included, creates distribution program information for making a recording reservation for the entire TV program, and transmits the information to a user terminal device (see, for example, Patent Document 1). .)

JP 2004-64343 A

  Content on the Internet Web (World Wide Web) is often created on the assumption that it is viewed and displayed on a PC (Personal Computer) using a full layout keyboard, mouse, or high-resolution display device. In many cases, the man-machine interface in the digital broadcast receivers of this type is insufficient, and viewers may be forced to perform troublesome operations when browsing and displaying content on the Web.

  For example, there are cases where a plurality of buttons arranged in the same manner as a keyboard are displayed on the screen of a digital broadcast receiver, and the viewer has to select and input the buttons for each character by operating the cursor buttons on the remote control. is there. In addition, since the screen cannot be freely moved like a mouse pointer of a PC, it may be necessary to operate the cursor button of the remote controller many times before reaching the target button.

  In a conventional digital broadcast receiver equipped with a Web browser, it is necessary to perform a search through many operations when a keyword appearing in a program becomes a concern during program viewing. There is a need for a digital broadcast receiver that can be searched with a simple operation for a keyword of interest.

  The present invention has been made in view of the circumstances as described above, and provides a keyword search system, a digital broadcast receiver, and a keyword search method capable of easily searching for keywords related to a program being viewed. The purpose is to provide.

  In order to achieve the above object, a keyword search system of the present invention is a keyword search system comprising a digital broadcast receiver and a server that provides a keyword in response to a request from the digital broadcast receiver. The broadcast receiver includes a keyword acquisition unit that acquires the keyword from the server connected via a network, a character string included in program information of a broadcast program, and a matching keyword that matches the keyword compared with the keyword. A character string analysis unit for extracting; a GUI control unit for displaying the matching keyword on a screen; and a browser for displaying search information related to the matching keyword selected by a viewer from the matching keywords. , A keyword that stores information on keywords with a high number of searches or keywords with a rapid increase in the number of searches. And de storage unit, characterized by comprising a transmission unit that transmits the keyword in response to a request of the digital broadcast receiver.

  The digital broadcast receiver according to the present invention includes a keyword acquisition unit that acquires a keyword from a server connected via a network, a character string included in program information of a broadcast program, and the keyword compared with the keyword. A string analysis unit that extracts the matched keyword, a GUI control unit that displays the matched keyword on a screen, and a browser that displays search information related to the matched keyword selected by the viewer from the matched keywords. It is characterized by that.

  The keyword search method of the present invention is a keyword search method in a digital broadcast receiver, and includes a keyword acquisition step of acquiring a keyword from a server connected via a network, and a character string included in program information of a broadcast program And a character string analyzing step for extracting a matching keyword that matches the keyword, a keyword displaying step for displaying the matching keyword on a screen, and a matching keyword selected by the viewer from the matching keywords. And a search information display step for displaying related search information.

  According to the present invention, a keyword related to a program being viewed can be easily searched.

The block diagram which shows the outline | summary of the system containing the digital broadcast receiver by this invention. The block diagram which shows the structure of the Example of a digital broadcast receiver. The general-view figure which shows the Example of a remote control. The figure which shows the operation | movement flow from acquisition of a keyword, extraction of a matching keyword, and memory | storage. The figure which shows the operation | movement flow until it displays on the screen URL of the acquisition destination of the information relevant to a matching keyword from operation of a viewer. The figure which shows the keyword display window displayed on the screen of a display apparatus. The figure which shows the state by which the search result of the information relevant to the matching keyword selected on the screen was displayed. The figure which shows the keyword display list by the HTML browser in Example 2. FIG. The figure which shows the state by which the search result of the information relevant to the matching keyword selected on the screen was displayed. The block diagram which shows the structure of the digital broadcast receiver which concerns on Example 3 of this invention. The figure which shows the state by which the EPG screen was displayed on the screen. The block diagram which shows the structure of the digital broadcast receiver which concerns on Example 4 of this invention. The figure which shows the recording notification window displayed on the screen. The figure which shows the recording list window of the back program displayed on the screen. The figure which shows the preservation | save confirmation window displayed on the screen. The block diagram which shows the structure of the digital broadcast receiver which concerns on Example 5 of this invention. The figure which shows the recording reservation window displayed on the screen.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an outline of a system including a digital broadcast receiver 1 according to the present invention. The digital broadcast receiver 1 has a function of receiving a digital broadcast broadcast from the broadcast station 30 and is connected to the Internet 31 via the transmission / reception unit 22 to transmit / receive information to / from the server 32 or the server 33 on the network. It has the function to do.

  The server 32 includes a storage unit that accumulates information on keywords with a large number of searches on the Internet or keywords with a rapid increase in the number of searches. The server 32 accumulates, as keyword information, a list of keywords 34 such as a search soaring ranking and a URL (Uniform Resource Locator) from which information related to the keywords 34 is acquired. Moreover, the transmission part which transmits the keyword 34 according to the request | requirement of the digital broadcast receiver 1 is provided.

  The server 33 is a server from which the keyword 34 is acquired. The server 32 acquires update information of the keyword 34 from another server connected via the network. The server 33 notifies the server 32 of keyword update, etc., and the server 32 requests acquisition of the update information of the keyword 34, and the server 33 sends the keyword update information to the server 32. The server 32 may have a format including the function of the server 33.

  FIG. 2 is a block diagram showing a configuration of an embodiment of the digital broadcast receiver 1 according to the present invention. The antenna 2 is an antenna for terrestrial digital broadcasting or satellite digital broadcasting for receiving broadcast radio waves transmitted from the broadcasting station 30. The tuner 3 selects a broadcast signal of a desired channel from broadcast signals of terrestrial digital broadcast or satellite digital broadcast, demodulates the received broadcast radio video signal and audio signal, and converts them into an MPEG2 transport stream. The tuner 3 is composed of a plurality of tuner units, and can receive a plurality of broadcasts at the same time.

  The demultiplexer 4 separates multiplexed signals, and detects each packet of data broadcasting such as video signal, audio signal, program information / subtitle information, etc. from the transport stream sent from the tuner 3. ,To separate. The demultiplexer 4 transmits the separated signal to the decoding processing unit 5.

  The decoding processing unit 5 has functions of a program information decoding unit 6, a caption character super decoding unit 7, and a video / audio decoding unit 8. The program information decoding unit 6 sections the data transmitted from the demultiplexer 4 and decodes the program information data. The subtitle character super-decoding unit 7 converts the subtitle character / super to an independent PES (Packetized Elementary Stream). The video / audio decoding unit 8 decodes video data and audio data by performing video ES (Elementary Stream) for video PES and audio ES for audio PES.

  The superimposition processing unit 9 superimposes the video data from the video / audio decoding unit 8 and the video data by plane management of window drawing by data broadcasting or GUI (Graphical User Interface) transferred via the bus. To the video display unit 10.

  The video processing unit 10 converts the format (number of pixels, frame frequency, scanning method) that can be displayed on the display device 11 or arbitrarily adjusts the display color, and outputs the video to the display device 11 to display the video. Let The audio processing unit 12 converts the digital audio data input from the video / audio decoding unit 8 into an analog audio signal that can be reproduced by the speaker 13, and then outputs the analog audio signal to the speaker 13 to reproduce the audio.

  In the digital broadcast receiver 1, all operations including the above-described reception operation are comprehensively controlled by the control unit 14. The control unit 14 is equipped with an MPU (Micro Processing Unit) 15 and controls each component connected via the bus 16.

  A RAM (Random Access Memory) 17 is a read / write memory that stores various data necessary for data processing of the control unit 14, and operates as a buffer memory that stores video data and the like. A ROM (Read Only Memory) 18 is a read only memory and stores a control program executed by the control unit 14.

  The flash memory 19 is a non-volatile semiconductor memory that can be rewritten and does not lose data even when the power is turned off. The flash memory 19 has a function in which the digital broadcast receiver 1 stores a list of keywords 34 such as a search sudden increase ranking acquired from the server 32 and a URL (Uniform Resource Locator) from which information related to the keywords 34 is acquired.

  The operation reception unit 20 receives an operation signal transmitted from the operation device 21 and transfers the operation signal to the control unit 14. The operation device 21 is, for example, a remote controller using a wireless communication such as infrared or Bluetooth, a wired or wireless keyboard, and the like, and sends an operation signal. The operation receiving unit 20 receives an operation signal from the remote controller, the keyboard, or the like.

  The digital broadcast receiver 1 is connected to the Internet 31 via the transmission / reception unit 22. As a result, the digital broadcast receiver 1 can perform information transmission via the transmission / reception unit 22 with devices such as the server 32 on the network.

  The control unit 14 has functions of a keyword acquisition unit 23, a character string analysis unit 24, a GUI control unit 25, and a browser 26. The keyword acquisition unit 23 transmits a keyword acquisition request to the server 32 on the network, and causes the flash memory 19 to store the keyword 34 acquired from the server 32 and the URL from which information related to the keyword is acquired.

  The character string analysis unit 24 extracts a character string to be analyzed from the program information and subtitle character / super information of the broadcast program decoded by the decoding processing unit 5. Program information data is included in an EIT (Event Information Table) of SI (Service Information, program arrangement information), and character strings are extracted from information on individual programs such as program name, broadcast date and time, and broadcast overview. The caption text / super data includes caption text data in addition to caption management data for matching display timing. A character string is extracted from character information in the caption text data. The character string analysis unit 24 compares the extracted character string with the keyword 34 stored in the flash memory 19, extracts the matched keyword, and stores it in the RAM 17.

  The GUI control unit 25 displays the matching keyword stored in the RAM 17 on the screen 11 a of the display device 11. When the viewer operates the remote controller while viewing the program, a keyword display window in which the matching keyword is posted over a part of the screen or the entire screen is displayed.

  Further, when the viewer selects one matching keyword in the keyword display window, the character string analysis unit 24 activates the browser 26 and displays the URL of the acquisition destination of information related to the selected matching keyword on the screen. indicate. The browser 26 is, for example, an HTML (HyperText Markup Language) browser.

  FIG. 3 is an overview diagram showing an embodiment of the remote controller 40. The remote controller 40 sends an operation signal to the operation receiving unit 20 of the digital broadcast receiver 1 using wireless communication such as infrared or Bluetooth. The power button 41 turns on or off the digital broadcast receiver 1. Specifically, this button is a button for bringing the digital broadcast receiver 1 from the standby state to the operation state, or from the operation state to the standby state.

  The channel selection button 42 is a button numbered 1 to 12 for directly selecting a channel number. The channel advance button 43 is a button for selecting a channel number by forward or reverse feeding, and is used when a channel is selected in the same manner as the channel selection button 42. The volume adjustment button 44 is a button for adjusting the volume when viewing a program.

  The cursor button 45 is a button for moving the cursor in various information windows on the GUI screen displayed on the screen of the display device 11 and moving selection buttons for various items. The left cursor button 45a is a button used to move the cursor to the left. The right cursor button 45b, the upward cursor button 45c, and the downward cursor button 45d are used to move the cursor in the right direction, the upward direction, and the downward direction, respectively. The decision button 46 is used when executing the position on the screen or the button on the screen moved by the cursor button.

  The keyword button 47 is a dedicated operation button operated when displaying a matching keyword related to the program being viewed on the screen. The browser button 48 is a dedicated operation button that is operated when the HTML browser is activated. The program guide button 49 is a dedicated operation button that is operated when an EPG (Electronic Program Guide) is displayed on the screen. The recording list button 50 is a dedicated operation button that is operated when a recording list of a back program including a matching keyword is displayed on the screen.

  FIG. 4 is a diagram illustrating an example of an operation flow from the acquisition of the keyword 34 to the extraction and storage of the matching keyword. In S <b> 11, when the viewer turns on the TV or selects a program, the keyword acquisition unit 23 sends a keyword acquisition request to the server 32 on the network. The keyword 34 is acquired from the server 32, and the acquired keyword 34 and the URL from which information related to the keyword 34 is acquired are stored in the flash memory 19.

  In S12, the keyword acquisition unit 23 determines whether or not the keyword acquisition is successful. If successful, the keyword acquisition unit 23 proceeds to S13. If not successful, the process proceeds to S17.

  In S <b> 13, the character string analysis unit 24 selects one of the keywords 34 stored in the flash memory 19. In S14, the character string analysis unit 24 extracts the character string to be analyzed from the program information and subtitle character / super information of the selected broadcast program, compares it with the keyword, and stores it in the RAM 17 as a matching keyword if they match. To do.

  In S15, the character string analysis unit 24 determines whether the keyword 34 stored in the flash memory 19 has been selected. If selected, the process proceeds to S16. If there remains a keyword 34 that has not yet been selected, the process returns to S13 and is repeated.

  In S16, the character string analysis unit 24 determines whether or not there is update data in the program information and the caption character / super information. If there is update data, the process proceeds to S13 and is repeated. If there is no update data, the process proceeds to S17.

  In S17, the character string analysis unit 24 determines whether a certain time has elapsed. If the predetermined time has elapsed, the process proceeds to S11 and the operation flow is repeated from the beginning. If not, the process proceeds to S13 and waits until a certain time elapses.

  FIG. 5 is a diagram illustrating an example of an operation flow from the operation of the viewer to displaying the URL of the acquisition destination of information related to the matching keyword on the screen. When the viewer presses the keyword button 47 of the remote control 40 while the viewer is watching the program after turning on the TV or selecting the program, the control unit 14 causes the keyword on which the matching keyword is posted. The display window is displayed on the screen.

  In S <b> 21, the keyword acquisition unit 23 determines whether the keyword acquisition from the server 32 is successful. If successful, the process proceeds to S23. If not successful, the process proceeds to S22. In S <b> 22, the GUI control unit 25 displays “Keyword acquisition failed” on the screen 11 a of the display device 11.

  In S23, the character string analysis unit 24 selects one of the keywords 34 stored in the flash memory 19, extracts a character string from the program information of the broadcast program and subtitle character / super information, and compares it with the keyword. , It is determined whether there is a matching keyword. If there is a matching keyword, the process proceeds to S25. If there is no matching keyword, the process proceeds to S24. In S <b> 24, the GUI control unit 25 displays “No keyword” on the screen 11 a of the display device 11.

  In S25, the GUI control unit 25 creates a matching keyword list and displays a keyword display window in which the matching keyword list is posted over a part of the screen or over the entire screen.

  FIG. 6 is a diagram illustrating an example of the keyword display window 60 displayed on the screen 11 a of the display device 11. This example shows a state in which four matching keywords are displayed in the upper right corner of the screen 11a after the viewer presses the keyword button 47 of the remote controller 40 while viewing the A program. The viewer can select one of the matched keywords posted by operating the cursor button 45.

  In S <b> 26, the GUI control unit 25 determines whether the viewer has selected a matching keyword in the keyword display window 60. If it determines with having selected, it will move to S27. If not, exit.

  In S <b> 27, the character string analysis unit 24 extracts the matching keyword selected by the viewer from the RAM 17, and starts up the HTML browser 26 so that the URL from which information related to the selected matching keyword is acquired is displayed on the screen. . The HTML browser 26 displays the URL of the acquisition destination of information related to the selected matching keyword on the screen 11a and ends.

  FIG. 7 is a diagram illustrating an example of a state in which a search result of information related to the selected matching keyword is displayed on the screen 11a. When the viewer selects “keyword 1” in the keyword display window 60 in FIG. 6, the character string analysis unit 24 activates the HTML browser 26 and obtains information related to the selected “keyword 1”. The previous URL is displayed on the screen. The screen display shown in FIG. 7 is a display state of the browser screen 61 by the HTML browser. The keyword display list 62 is displayed by an HTML browser. A plurality of URLs from which related information is acquired are displayed under “Keyword 1 Search”.

  When the viewer selects a URL of interest from a plurality of URLs displayed on the screen 11a, the HTML browser accesses the target server 33 and receives information from the server 33, and the information is displayed on the screen 11a. Can be displayed.

  As described above, if the program information of the program being viewed and the text information included in the subtitle text / super information match, for example, a keyword (keyword such as a search soaring ranking) that has rapidly increased the number of searches on the Internet. , Matching keywords are displayed on the screen. When the viewer selects one of the matching keywords, the search result related to the selected keyword, that is, the URL from which the information is acquired can be displayed. The viewer can easily transition to a screen on which the search result is displayed without performing a troublesome operation with the remote controller for keywords related to the program being viewed.

  FIG. 8 is a diagram illustrating a display example of the keyword display list 52 by the HTML browser in the second embodiment. The difference between the second embodiment and the first embodiment is that in the first embodiment, the keyword display window 50 is displayed on the screen 11a by pressing the keyword button 47 of the remote controller 40 while the viewer is watching the program. In the second embodiment, the viewer presses the browser button 48 of the remote controller 40 while the viewer is watching a program (for example, program A) to display the keyword display list 62 on the screen 11a.

  In order to perform the processing of the operation flow shown in FIG. 4 while viewing the program A, the GUI control unit 25 activates the HTML browser 26. When the characters are input in the HTML browser 26, the processing of the operation flow shown in FIG. . The viewer can select the matching keyword with the cursor button 35 of the remote controller 40.

  FIG. 9 is a diagram illustrating an example of a state in which a search result of information related to the selected matching keyword is displayed. A search result is displayed when the character string analysis unit 24 inputs a character input window of an HTML browser. In this way, the viewer can easily search for keywords related to the program from keywords such as a search soaring ranking without performing a troublesome operation with the remote controller.

  FIG. 10 is a block diagram illustrating a configuration of a digital broadcast receiver 70 according to the third embodiment of the present invention. About each part of this Example 3, the same part as each part of the digital broadcast receiver 1 of Example 1 shown in FIG. 2 is the same code | symbol. The third embodiment is different from the first embodiment in that the controller 14 is replaced with the controller 71 and the controller 71 includes an EPG display controller 72.

  The control unit 71 performs the operation flow shown in FIG. 4 for all the channels displayed in the EPG when starting up the EPG. When the EPG display control unit 72 configures the EPG screen 73, the EPG screen The program including the matching keyword in 73 can be displayed separately from the program that does not include the matching keyword by changing the background color of the program, making the characters thicker, or changing the color of the characters.

  FIG. 11 is a diagram showing a state in which the EPG screen 73 is displayed on the screen 11a. For example, when the viewer presses the program guide button 49 of the remote controller 40, the EPG display control unit 72 displays the EPG screen 73 on the screen 11a. As shown by hatching, the program including the matching keyword can be displayed so as to be distinguished from the program not including the matching keyword.

  For example, when “Singer A”, “Sports Player B”, “Actor C”, “Variety Fuji” (program name) is included in the search soaring ranking (keyword), the program information of “music program” includes “ If the program information of “Singer A”, “News A”, “News B”, “Sports Program” includes “Sports Player B”, and “Wide Show” includes “Actor C”, The background color of the corresponding program part is colored to distinguish it from other programs. The viewer can check the program including the matching keyword on the EPG screen. Therefore, the viewer can easily know the program including the keyword and can view the program.

  FIG. 12 is a block diagram illustrating a configuration of a digital broadcast receiver 80 according to the fourth embodiment of the present invention. In each part of the fourth embodiment, the same parts as those of the digital broadcast receiver 1 of the first embodiment shown in FIG. The fourth embodiment is different from the first embodiment in that the control unit 14 is replaced with the control unit 81, and the control unit 81 includes a back program recording control unit 82.

  The digital broadcast receiver 80 includes a recording device 83. The recording device 83 is a recording device including an HDD (Hard Disk Drive) or an SSD (Solid State Drive). The recording device 83 is connected to the data bus 16, but the recording device 83 is equipped with an interface unit for recording and reproducing information, and a broadcast program or the like is recorded on the HDD or SSD via the interface unit. And play again. The recording device 83 may be outside the digital broadcast receiver 80. In this case, the digital broadcast receiver 80 is connected to the HDD or SSD via an interface such as USB (Universal Serial Bus), IEEE 1394 (Institute of Electrical and Electronic Engineers 1394), or eSATA (external Serial ATA (AT Attachment)). Record and replay broadcast programs.

  The control unit 81 performs the operation flow shown in FIG. 4 for the entire back program of the program being viewed by the viewer, and the back program recording control unit 82 records the program 83 for the program including the matching keyword. Record on.

  When starting the recording, the back program recording control unit 82 acts on the GUI control unit 25 to display “Record a program of a channel including a keyword” on the screen 11a. FIG. 13 is a diagram showing a recording notification window 84 displayed on the screen 11 a of the display device 11. While the viewer is watching the program, it is displayed on a part of the screen in the form of a pop-up window for a predetermined time. The predetermined time is, for example, 3 to 30 seconds.

  When the viewer presses the recording list button 50 of the remote controller 40, the back program recording control unit 82 acts on the GUI control unit 25 to display a recording list of back programs including matching keywords on the screen. FIG. 14 is a diagram showing a back program recording list window 85 displayed on the screen 11 a of the display device 11. In the recording list window 85, the channel number, program name, and broadcast time of the recorded program are displayed.

  FIG. 15 is a diagram showing a save confirmation window 85 displayed on the screen 11 a of the display device 11. When the viewer selects one from the recording list window 85 shown in FIG. 14, a save confirmation window 86 for confirming whether to save the recorded program is displayed. The viewer can select Yes or No. If you select Yes, “Save” is displayed and saved, and if you select No, “Delete” is displayed and deleted.

  As described above, the back program recording control unit 82 records the program including the matching keyword in the recording device 83, so that the program including the keyword is not missed. Viewers can select programs that they are interested in and watch them later, and keywords related to the programs that they are viewing can be easily displayed on the screen where search results are displayed without any troublesome operations using the remote control. Transition is possible.

  FIG. 16 is a block diagram showing a configuration of a digital broadcast receiver 90 according to the fifth embodiment of the present invention. About each part of this Example 5, the same part as each part of the digital broadcast receiver 80 of Example 4 shown in FIG. 12 is the same code | symbol. The fifth embodiment is different from the fourth embodiment in that the control unit 81 is replaced with the control unit 91, and the control unit 91 includes a next set recording control unit 92.

  The control unit 91 performs the operation flow shown in FIG. 4 for the next program of the program being viewed by the viewer, and if the next program recording control 92 includes the matching keyword in the program information of the next program. Then, it acts on the GUI control unit 25 to display the recording reservation window 93 to prompt the viewer to record the program.

  FIG. 17 is a diagram showing a recording reservation window 93 displayed on the screen 11 a of the display device 11. The recording reservation window 93 displays “The next program contains a keyword (for example, program D). Do you want to record?”, And the viewer can select Yes or No. If “Yes” is selected, “Recording” is displayed and recording is reserved, and if “No” is selected, “No recording” is displayed and recording is not reserved.

  As described above, if the program information of the next program includes a keyword such as a search soaring ranking, the viewer can easily make a program reservation and does not miss the next program. In addition, while viewing the next program, it is possible to easily change to a search result related to the keyword.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 Digital Broadcasting Receiver 2 Antenna 3 Tuner 4 Demultiplexer 5 Decode Processing Unit 6 Program Information Decoding Unit 7 Subtitle Character Super Decoding Unit 8 Video / Audio Decoding Unit 9 Superimposition Processing Unit 10 Video Display Unit 11 Display Device 11a Screen 12 Audio Processing Unit 13 Speaker 14 Control unit 15 MPU
16 bus 17 RAM
18 ROM
19 Flash memory 20 Operation reception unit 21 Operation device 22 Transmission / reception unit 23 Keyword acquisition unit 24 Character string analysis unit 25 GUI control unit 26 HTML browser 30 Broadcast station 31 Internet 32 Server 33 Server 34 Keyword 40 Remote control 47 Keyword button 48 Browser button 49 Program Front button 50 Recording list button 60 Keyword display window 61 Browser screen 62 Keyword list 70 Digital broadcast receiver 71 Control unit 72 EPG display control unit 73 EPG screen 80 Digital broadcast receiver 81 Control unit 82 Back program recording control unit 83 Recording device 84 Recording notification window 85 Recording list 86 Save confirmation window 90 Digital broadcast receiver 91 Control unit 92 Next program recording control unit 93 Recording reservation window

Claims (8)

A keyword search system comprising a digital broadcast receiver and a server that provides keywords in response to a request from the digital broadcast receiver,
The digital broadcast receiver
A keyword acquisition unit for acquiring the keyword from the server connected via a network;
A character string analysis unit that extracts a matching keyword that matches the keyword and the character string included in the program information of the broadcast program;
A GUI control unit for displaying the matching keyword on a screen;
A browser that displays search information related to the matching keyword selected by the viewer from the matching keywords,
The server includes a keyword storage unit that accumulates information on a keyword with a large number of searches or a keyword with a rapidly increasing number of searches,
A keyword search system comprising: a transmission unit that transmits the keyword in response to a request from the digital broadcast receiver.   The keyword search system according to claim 1, wherein the server acquires update information of the keyword from another server connected via a network. A keyword acquisition unit for acquiring keywords from a server connected via a network;
A character string analysis unit that extracts a matching keyword that matches the keyword and the character string included in the program information of the broadcast program;
A GUI control unit for displaying the matching keyword on a screen;
A digital broadcast receiver comprising: a browser for displaying search information related to a matching keyword selected by a viewer from the matching keywords.   4. The digital broadcast receiver according to claim 3, wherein a dedicated operation button is provided on the remote controller when displaying the matching keyword on the screen. An EPG display control unit for displaying an EPG (Electronic Program Guide) screen on the screen;
4. The digital display according to claim 3, wherein the EPG display control unit distinguishes and displays the broadcast program including the character string of the matching keyword and the broadcast program not including the character string of the matching keyword. Broadcast receiver. A keyword acquisition unit for acquiring keywords from a server connected via a network;
A character string analysis unit that extracts a matching keyword that matches the keyword and the character string included in the program information of the back program of the broadcast program that the viewer is viewing;
A digital broadcast receiver comprising: a reverse program recording control unit for recording a reverse program including the character string of the matching keyword. A keyword acquisition unit for acquiring keywords from a server connected via a network;
A character string analysis unit that extracts a matched keyword that matches the keyword with a character string that is included in program information of a next program that is broadcast next to a broadcast program that the viewer is viewing;
And a next program recording control unit for recording the next program including the character string of the matching keyword. A keyword search method in a digital broadcast receiver,
A keyword acquisition step of acquiring keywords from a server connected via a network;
A character string analysis step of extracting a matching keyword that matches the keyword with a character string included in program information of a broadcast program;
A keyword display step for displaying the matching keyword on a screen;
And a search information display step of displaying search information related to the match keyword selected by the viewer from the match keywords.

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