KR20100075719A - Method for searching keyword of broadcasting receiver, and broadcasting receiver - Google Patents

Abstract

PURPOSE: A method for searching a keyword of a broadcasting receiver is provided to obtain the information related to the information broadcasted from a searching engine. CONSTITUTION: A signal processing unit obtains caption data from a broadcasting signal, and a keyword extracting unit(200) extracts keywords from the caption data. The extracted keywords are displayed with an image through a keyword display instructing unit(204). A searching instruction unit(208) executes keyword searching with a searching engine through a communication network. A search result display unit(210) displays the searching results by the searching engine.

Description

Broadcast receiving apparatus and keyword searching method {Method for searching keyword of broadcasting receiver, and broadcasting receiver}

The present invention relates to a broadcast receiving apparatus and a keyword searching method.

Background Art Conventionally, a technique for the purpose of providing a free text search of electronic program guide (EPG) data in a digital television system is known, for example, as described in Patent Document 1 below.

<Patent Document 1> Japanese Patent Application Laid-Open No. 2004-289848

However, there are times when viewers, such as digital television, want to collect more information about information obtained from a program while watching a program. Since the above conventional technology only assumes a text search of electronic program guide data, it is not possible to search for text related to viewing a program. Therefore, there is a problem that it is impossible to collect information even if the viewer wants to acquire more information while watching the program.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a new and improved broadcast receiving apparatus and keyword searching method which can acquire information related to a program from a search engine while watching a program.

According to an aspect of the present invention to solve the above problems, extracting a keyword from the caption data included in the broadcast signal, displaying the extracted keyword with the image by the broadcast signal, and search for the displayed keyword A keyword search method is provided which includes performing a keyword search by a search engine via a communication network when the instruction is received, and displaying a search result by the search engine.

According to the above configuration, a keyword is extracted from the caption data included in the broadcast signal, and the extracted keyword is displayed together with the image by the broadcast signal. When a search instruction is received for the displayed keyword, the keyword search by the search engine is executed through the communication network, and the search result is displayed. Therefore, it is possible to obtain more information from the search engine with respect to the broadcasted information.

According to another aspect of the present invention for solving the above problems, a signal processing unit for obtaining caption data from a broadcast signal, a keyword extraction unit for extracting a keyword from the caption data, and displaying the extracted keyword together with the image by the broadcast signal. A keyword display instruction unit for performing a keyword search by a search engine through a communication network when receiving a search instruction for the displayed keyword, and a search result display unit for displaying a search result by the search engine; A broadcast receiving device is provided.

According to the above configuration, caption data is acquired from the broadcast signal, keywords are extracted from the obtained caption data, and the extracted keywords are displayed together with the video by the broadcast signal. When a search instruction is received for the displayed keyword, the keyword search by the search engine is executed through the communication network, and the search result is displayed. Therefore, it is possible to obtain more information from the search engine with respect to the broadcasted information.

And an appearance frequency calculating section for calculating an appearance frequency of the keywords extracted by the keyword extracting section, wherein the keyword display indicating section displays a plurality of keywords in order of appearance frequency. By the above configuration, the user can further search for a keyword having a high frequency of appearance.

The keyword extracting unit extracts a keyword only when a program designated by the user is received. With the above configuration, it is not necessary to extract keywords for all programs, thereby reducing the throughput.

According to another aspect of the present invention for solving the above problems,

A signal processor for obtaining caption data from a broadcast signal;

A central processing unit which extracts a keyword from the caption data obtained by the signal processing unit, executes a keyword search by a search engine through a communication network, and displays the search result when a search instruction is received for the extracted keyword; ;

Provided is a broadcast reception device including a display control unit for displaying a keyword extracted from the central processing unit and a keyword search result on a display panel.

According to the above configuration, the user can efficiently search for information related to the program in question during the program viewing in real time using a search engine.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in the present specification and drawings, components having substantially the same functional configuration will be omitted by the same reference numerals.

1 is a schematic diagram showing the configuration of a digital broadcast receiver 100 according to an embodiment of the present invention. The digital broadcast receiver 100 according to the present embodiment is a device for receiving and watching terrestrial digital broadcast signals, for example. In addition, the digital broadcast receiver 100 may be connected to the Internet 150 and acquire various kinds of information through the Internet 150.

As shown in FIG. 1, the digital broadcast receiver 100 includes an Ethernet (registered trademark) controller 102, an NVRAM 104, an SDRAM 106, a CPU 108, and an Internet browser connected to a network such as the Internet. 110, an antenna 112, a tuner 114, a signal processor 116 for processing DEMUX, etc., a decoder 118, an EPG storage unit 120, a display control unit 122, a display panel 124, a D / A converter 126, a speaker 128, and IrDA 130 are provided.

The digital broadcast receiver 100 may be connected to the Internet 150 through the Ethernet controller 102. Various information acquired from the Internet 150 may be displayed on the display panel 124 by reading a web page in the Internet browser 110. The internet browser 110 is an application software for viewing web pages, and functions the CPU 108 as a browser. Application software (program) of the Internet browser 110 is stored in a memory included in the television broadcast receiver 100. The NVRAM 104 and the SDRAM 106 are memories that hold information acquired via the Internet 150 and hold software programs. In particular, the memory may store a user-specified program used for keyword extraction in the CPU 108.

In addition, the tuner 114 included in the digital broadcast receiver 100 receives a terrestrial digital broadcast signal, and the terrestrial digital broadcast signal is received by the tuner 114 through the antenna 112. The received broadcast signal is sent to the signal processor 116. The signal processor 116 separates a signal multiplexed by DEMUX processing, and separates the transport stream input from the tuner 114 into elementary streams such as video (video) data, audio (audio) data, and subtitle data. The data is sent to the decoder 118 by dividing by. The decoded image data and caption data are displayed on the display panel 124 under the control of the display control unit 122. The decoded voice data is converted into an analog signal by the digital / analog (D / A) converter 126 and sent to the speaker 128. In addition, the signal processing unit 116 performs SI / PSI (Service Information / Program Specific Information) processing, divides the data of the electronic program guide (EPG) from the broadcast signal, and sends the data to the EPG storage unit 120. The data of the EPG is displayed on the display panel 124 under the control of the display control unit 122.

In the digital broadcast receiver 100 of the present embodiment having the above-described configuration, the CPU 108 functions according to a program stored in a memory, thereby extracting keywords (eg, nouns, etc.) from the caption data, and generating various occurrence frequencies. Keywords can be extracted.

In addition, the CPU 108 ranks the extracted several keywords based on the frequency of appearance, and sends these keywords and information about the frequency of appearance to the display control unit 122 for display on the display panel 124.

2 is a block diagram showing the functional configuration of the CPU 108 operating according to the program.

As shown in Fig. 2, as the functional configuration of the CPU 108 functioning according to the program, the keyword extracting unit 200, the appearance frequency calculating unit 202, the keyword display indicating unit 204, the search instruction receiving unit 206, There is a search instruction unit 208, a search result display instruction unit 210, and a setting condition acquisition unit 212.

Here, the keyword extractor 200 extracts a keyword that can be a search keyword from the decoded caption data. The appearance frequency calculation unit 202 calculates the appearance frequency by counting the number of appearances within a predetermined time for each of the plurality of keywords extracted by the keyword extraction unit 200. The keyword display instruction unit 204 instructs the display control unit 122 to display the highest occurrence frequency among the extracted keywords in the order of appearance frequency on the display panel 122.

3 illustrates a state in which the keywords ranked on the appearance frequency are displayed on the display panel 124. 3 shows a case of watching a sports program as an example. In this case, the caption data contains a relatively large number of sports players. 3 shows a state in which the names of prominent baseball players are extracted from the caption data, and "Shiga Nagashima", "King dynasty", "Matsui Hideki", and "Kuwata Masumi" are extracted in order of appearance frequency. Shows a state displayed on the display screen 124a.

Here, the display of the keyword shown in FIG. 3 is displayed together with the video of the program in the display screen 124a. Therefore, the user can recognize a keyword having a high frequency of appearance in the caption data in real time while watching the sports program.

If the user wants to obtain more information about the displayed keywords, the user can select one keyword among the plurality of keywords using the remote controller 300 and send it to the search engine through the Internet 150. When one keyword is selected by the remote controller 300, the information is sent from IrDA (Infrared Data Association) 130 to the CPU 108. The search instruction receiving unit 206 shown in Fig. 2 selects the selected keyword. The search instruction unit 208 instructs the search engine 208 to send the selected keyword to the server of the search engine via the Ethernet controller 102 and the Internet 150. As a result of the search, the information sent from the server of the search engine is received. Is displayed on the display panel 124 by the instruction of the search result display indicating unit 210.

In this way, the CPU 108 transmits the selected keyword to the search engine via the Internet 150, whereby the search engine to which the keyword is input performs keyword search. Information such as a list of hit homepages is sent to the digital broadcast receiver 100 and displayed on the display panel 124. This information can be browsed on the display screen 124a of the display panel 124 by the function of the internet browser 110. This allows the user to get more detailed information about the program while viewing the program.

Therefore, according to the digital broadcast receiver 100 of the present embodiment, it is possible to fuse a broadcast reception function such as terrestrial digital waves and a search function through the Internet 150, so that more detailed information about a program can be obtained in real time. Will be.

In addition, it is not necessary to extract keywords for all genres of programs, and whether to extract keywords can be appropriately determined according to the user's setting. For example, a keyword may be extracted only from a program of a genre previously designated by the user. For example, in the case of FIG. 3, if keywords are extracted only by a sports program, the keywords may not be extracted while the viewer is watching a program of another genre such as drama. In this case, the genre of the program acquired by the EPG is compared with the genre that the keyword extraction setting has been set by the user beforehand, and the keyword is extracted if they match, and the keyword is not extracted if they do not match. The setting condition acquiring unit 212 shown in Fig. 2 acquires the setting by the user and transfers the user setting to the search instruction unit 208 to instruct the user to search for the keyword by the user setting as necessary.

In addition, if the user is set to display past keyword extraction results even if keyword search is not set for the currently viewed program, the extracted keyword extraction results are displayed on the display panel 124. . For example, if the genre of the program you are currently watching is a drama, and it is set to display past keyword extraction results even if the genre is set not to perform keyword extraction for the genre, then in the past, The result of keyword extraction may be displayed as shown in FIG. 3.

Keyword extraction can always be performed when there is an elementary stream of caption data in the broadcast signal, and the syntax of the caption data can be parsed regardless of whether the caption data is displayed on or off on the display panel 124. Extraction of keywords is possible.

Next, the processing procedure in the digital broadcast receiver 100 of the present embodiment will be described based on FIG. First, in step S10, a program for extracting a keyword is designated by the user. The designation may be directly designated according to the EPG information, or may be designated according to the genre of the program (drama, sports, movies, news, etc.). In addition, if the user designation is stored in a memory or the like, there is no need to perform step S10 processing every time the power is turned on.

Next, in step S12, it is determined whether or not the program tuned in at this time is the program specified in step S10, and if it is the designated program, the flow goes to step S14.

In step S14, it is determined whether there is an elementary stream of subtitles in the broadcast signal. If there is a subtitle ES, the flow advances to step S16 to decode the subtitle data from the subtitle ES. Next, in step S18, a search keyword is extracted from the decoded caption data. Here, for example, a process of extracting words of nouns from caption data is performed.

Next, in step S20, an appearance frequency is calculated for each extracted keyword. Here, the frequency with which each keyword is extracted within a predetermined time is calculated. In the next step S22, the extracted keywords are displayed on the display panel 124 in the order of appearance frequency calculated in step S20.

In the next step S24, it is determined whether or not a search instruction has occurred for any of the displayed keywords by the user's remote control operation. If a search instruction has occurred, the process proceeds to step S26 where a process for delivering the search instruction query to the search engine via the Internet 150 is performed.

In the next step S28, the search result is acquired from the search engine, and in the next step S30, the search result is displayed on the display screen of the display panel 124. FIG. After step S30, the processing ends (END).

On the other hand, in step S12, if the program tuned in at this time is not a program designated by the user, the flow advances to step S32. In step S32, if it is set to determine whether to display the keyword extracted in the past or not, the flow proceeds to step S22. In step S22, the keywords extracted in the past are displayed in order of appearance frequency. On the other hand, if the setting for displaying the keyword extracted in the past in step S32 is not made, the process ends (END).

As described above, according to the present embodiment, since the keyword extracted from the caption data can be displayed on the display panel 124, the keyword can be searched by the search engine, and thus the broadcast receiving function such as terrestrial digital wave and the Internet 150 can be used. It is possible to fuse the search function through) so that it is possible to obtain more information from the search engine with respect to the broadcasted information. Therefore, the user can efficiently search for information related to the program in question during the program viewing in real time using a search engine.

As mentioned above, although preferred embodiment of this invention was described with reference to an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said example. It will be apparent to those skilled in the art that various modifications or variations can be made within the scope of the claims and naturally belong to the technical scope of the present invention.

The present invention can also be embodied as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, hard disk, floppy disk, flash memory, optical data storage, and the like. The computer readable recording medium may also be distributed over a networked computer system and stored and executed as computer readable code in a distributed manner.

1 is a schematic diagram showing the configuration of a digital broadcast receiver according to one embodiment of the present invention.

2 is a block diagram showing a functional configuration of a CPU operating in accordance with a program.

3 is a schematic diagram showing a state in which keywords ranked on the basis of appearance frequency are displayed on a display panel.

4 is a flowchart showing a processing procedure in a digital broadcast receiver.

* Description of the sign *

100 digital broadcast receiver

116 signal processor

200 keyword extraction unit

204 keyword display indicator

208 search indicator

210 search results display

Claims (14)

Extracting a keyword from caption data included in a broadcast signal; Displaying the extracted keyword together with the image generated by the broadcast signal; Executing a keyword search by a search engine through a communication network when receiving a search instruction for the displayed keyword, And displaying a search result by the search engine. The method of claim 1, wherein the keyword extracting step comprises extracting a keyword by a program designated according to EPG information or a program genre. The method of claim 1, wherein the keyword extraction step Determine whether a closed caption element stream exists in the broadcast signal, Decode caption data from the caption element stream, And a search keyword is extracted from the caption data. The method of claim 1, further comprising: determining whether to extract a keyword according to the user setting. The method of claim 4, wherein the determination of whether to extract the keyword is A keyword search method for designating a program acquired from an EPG and a setting by a user. The keyword is extracted if both match and the keyword is not extracted. The method of claim 1, wherein the frequency of occurrence of the extracted keyword is calculated. Determine the appearance frequency ranking of each keyword based on the appearance frequency, And displaying the information about the frequency of appearance. The keyword search method according to claim 1, further comprising displaying on the screen a keyword extraction result extracted in the past if a keyword search setting is not set for a currently viewed program. A signal processor for acquiring subtitle data from a broadcast signal; A keyword extraction unit for extracting a keyword from the caption data; A keyword display instruction unit which displays the extracted keyword together with the image generated by the broadcast signal; A search instruction unit which executes a keyword search by a search engine through a communication network when a search instruction is received for the displayed keyword; And a search result display unit for displaying a search result by the search engine. The method according to claim 8, further comprising: an appearance frequency calculator for calculating an appearance frequency of the keywords extracted by the keyword extraction unit; And the keyword display indication unit displays a plurality of keywords in order of appearance frequency. The broadcast reception device according to claim 8, wherein the keyword extraction unit extracts a keyword only when a program designated by a user is being received. 10. The broadcast reception according to claim 8, wherein the keyword extraction unit extracts a keyword when the two programs match by comparing a predetermined program and a setting by a user, and does not extract the keyword when they do not match. Device. The broadcast receiving device according to claim 8, further comprising a setting condition acquiring unit for acquiring a setting by a user and transferring the user setting to the search instructing unit. In the broadcast receiving device, A signal processor for obtaining caption data from a broadcast signal; A central processing unit which extracts a keyword from the caption data obtained by the signal processing unit, executes a keyword search by a search engine through a communication network, and displays the search result when a search instruction is received for the extracted keyword; ; And a display control unit which displays a keyword extracted by the central processing unit and a keyword search result on a display panel. The broadcast reception device according to claim 13, further comprising a memory for storing a user specified program for extracting keywords of the central processing unit.

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