JP2001309257A - Receiver of digital tv broadcasting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiver of digital TV broadcasting realizing an easy search for programs. SOLUTION: This receiver of digital TV broadcasting comprises a first means retrieving a plurality of key words to search a program among program guide information, a second means creating a voice identifying dictionary comprising the reading of the obtained plural key words, a third means processing voice inputting of a user for a word to specify the desired program, a fourth means retrieving the key word responding to the inputted voice by a voice identifying process to the inputted voice based on the dictionary and a fifth means searching a program based on the retrieved key words.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital television broadcast receiver.

[0002]

2. Description of the Related Art In a multi-channel digital satellite broadcasting system started in recent years, for example, a large number of channels of 100 or more are prepared, and a large number of programs are provided. In such a broadcast, unprecedented functions, for example,
Currently broadcast programs and future program guide information have been transmitted at predetermined time intervals together with the original program data.

[0003] A digital television broadcast receiver creates display data such as a program guide and a menu on the basis of such information. The user can select a program from the program guide and menu displayed on the screen. However, the user has to follow a number of steps to find the desired program.

[0004] For example, the professional baseball program "Giant-Hanshin Battle"
When searching for a game, first, display a search screen for using the genre search function, select a sport on the search screen, and select “professional baseball” from among many sports genres.
Select And from the search results, "Giant-Hanshin Battle"
Will be searched.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a digital television broadcast receiver which makes it easy to search for a program.

[0006]

A digital television broadcast receiver according to the present invention comprises: first means for extracting a plurality of keywords for performing a program search from program guide information; A second means for creating a dictionary, a third means for causing a user to input a word for specifying a program to be selected by a user, and performing voice recognition processing on the input voice based on the voice recognition dictionary.
Fourth means for extracting a keyword corresponding to the input voice, and fifth means for searching for a program based on the extracted keyword
Means is provided.

[0007] It is preferable to provide a means for displaying information on the searched program.

[0008] As a first means, for example, a word corresponding to a specific part of speech in the program guide information is extracted as a keyword, and is included in a portion where two or more words of the specific part of speech in the program guide information are connected. What extracts various compound word strings as keywords is used.

As a first means, for example, a word in the program guide information is extracted as a keyword, and a compound word is extracted from various compound word strings included in a portion where two or more words in the program guide information are connected. A keyword that extracts as a keyword a word whose connection relation matches a predetermined rule is used.

As a first means, for example, a character string in a format often used as program guide information is created as a template including a variable portion and a fixed portion, and a character string matching the template is created from the program guide information. Is extracted, and a portion corresponding to the variable portion of the template in the extracted character string is extracted as a keyword.

[0011]

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

[1] Description of configuration of digital television broadcast receiver

FIG. 1 shows a configuration of a digital television broadcast receiver having a function of receiving a digital broadcast.

The digital television broadcast receiver has a system controller 20. System controller 2
0 includes a ROM 21 for storing the program and the like, a RAM 22 for storing necessary data, and a non-volatile memory 23 that can be written and read.

A broadcast wave is transmitted to a tuner 2 via an antenna 1.
To be subjected to high-frequency processing and demodulation. The output from the tuner 2 is sent to the DEMUX circuit 3, where the packet is decoded.

In the DEMUX circuit 3, the packet is
It is separated into MPEG data and additional information such as program guide information. The MPEG data separated by the DEMUX circuit 3 is sent to the AV decoder 4. DEMUX circuit 3
The additional information separated by the above is sent to the system controller 20.

The system controller 20 has a DEMUX
The auxiliary information sent from the circuit 3 is stored in the RAM 22. The system controller 20 includes a remote control transmitter 1
2 is input via the remote control light receiver 13.

The system controller 20 includes a tuner 2
And information for channel selection to the DEMUX circuit 3.
Further, the system controller 20 displays various operation screens as C
An OSD control signal for causing the RT 8 to perform on-screen display is sent to the OSD display circuit 14. OSD display circuit 14
Generates display data such as program guides and menus,
The signal is sent to the multiplexer (synthesis circuit) 6 as an OSD signal.

The AV decoder 4 demodulates the MPEG data sent from the DEMUX circuit 3. AV decoder 4
The video signal obtained by the above is sent to the multiplexer 6 via the video processing circuit 5. The multiplexer 6 superimposes the display data sent from the OSD display circuit 14 on the video data output from the video processing circuit 5 and sends it to the video output circuit 7. The video signal output from the video output circuit 7 is sent to the CRT 8. FIG.
Shows an example of the program guide screen.

The audio signal obtained by the AV decoder 4 is sent to a speaker 11 via an audio processing circuit 9 and an audio output circuit 10.

[2] Description of program search based on audio

This digital broadcast receiver has a function of searching for a program on the basis of a word input by voice by a user. To achieve this function, a voice input device 24 is provided. The ROM 21 stores a morphological analysis dictionary. System controller 20
Means program guide information (electronic program guide information: EPG information)
Based on the non-volatile memory 2 using the morphological analysis dictionary
In step 3, a dictionary for voice recognition is created. Then, voice recognition is performed on the voice input from the user based on the voice recognition dictionary, and a program is searched based on the recognized word.

FIG. 3 shows a procedure for creating a speech recognition dictionary performed by the system controller 20.

First, the program guide information is analyzed (step 1). That is, information such as the program name, cast, and content of each program is analyzed from the program guide information. Then, by performing a morphological analysis on the items obtained by the analysis using a morphological analysis dictionary, a list of search keywords is created (step 2). A reading is given for each keyword (step 3). Based on the obtained reading of each keyword, a dictionary for speech recognition is created (step 4).
A specific example of the process of creating a list of keywords for search performed in step 2 will be described later.

The above-described process of creating the speech recognition dictionary is executed about once a day, and the content of the speech recognition dictionary is updated each time.

FIG. 4 shows a procedure of a program search process by voice input performed by the system controller 20.

In the program search mode by voice input, the user uses the voice input device 24 to voice-input a word for specifying a program to be selected. The words for specifying a program include a genre name, a program name, a cast name, and the like.

In the program search mode based on voice input, when a voice corresponding to a word for specifying a program is input from the voice input device 24 (step 11), the input voice is input based on the voice recognition dictionary. By performing the voice recognition process, a keyword corresponding to the input voice is extracted from the voice recognition dictionary (step 12).

A program is searched based on the extracted keywords (step 13). That is, a program that includes the keyword extracted in the program guide information is searched from each program. Then, information on the searched program (for example, program name, channel, broadcast start time, etc.) is displayed (step 14). The user selects a program to be viewed or makes a program reservation (viewing reservation, recording reservation or viewing / recording reservation) by selecting a desired program from the displayed program information.

[3] Description of a specific example of the process of creating a list of keywords for search performed in step 2 of FIG.

A specific example of the process of creating a list of keywords for search performed in step 2 of FIG. 3 will be described. There are three methods for creating a list of keywords for search.

(1) Description of First Method In a first method, a word corresponding to a specific part of speech in program guide information such as a program name is extracted as a keyword, and a word of a specific part of speech in the program guide information is extracted. In this method, various compound word strings included in two or more connected portions are extracted as keywords.

In this example, nouns, verbs, adjectives, adverbs,
Assume that adnominals, conjunctions and affixes have been selected as specific parts of speech.

FIG. 5 shows a procedure for determining a search keyword by the first method.

First, an input character string is obtained from information such as the program name, performers, and contents of the program (step 21). Here, a case where “Hanshin vs. Hiroshima” is acquired as an input character string will be described as an example.

Next, the current position pointer p and the start position s of the keyword are set to the first character of the input character string (step 22). Specifically, the current position pointer p and the start position s of the keyword are set in “Han” of the “Hanshin-Hiroshima match”.

Next, dictionary lookup is performed at the position where the current position pointer p is set (step 23). Then, it is determined whether or not the part of speech of the word w that has been looked up in the dictionary corresponds to the specific part of speech described above (step 24).

When the part of speech of the word w that has been looked up in the dictionary corresponds to the specific part of speech described above, a character string from the keyword start position s to the word w that has been looked up in the dictionary is selected as a keyword (step). 25). For example, if "Hanshin" of "Hanshin vs. Hiroshima" is dictionary-searched in step 23, "Hanshin" is extracted as a keyword because "Hanshin" is a noun included in a specific part of speech.

Next, it is determined whether or not the end of the word extracted in the dictionary in step 23 is the end of the input character string (step 26). If the ending of the word in the dictionary is not the end of the input character string in step 23, the current position pointer p is advanced to the next character of the word w in the dictionary (step 27), and the process returns to step 23. Step 23
By repeating ~ 27, the character string "Hanshin pair",
"Hanshin vs. Hiroshima" and "Hanshin vs. Hiroshima" are selected as keywords. "Pair" is an affix, "Hiroshima" is a noun,
"War" is an affix.

In step 24, when it is determined that the part of speech of the word w extracted in step 23 does not correspond to the specific part of speech described above, or in step 26, the end of the word extracted in step 23 in the dictionary is an input character string. If it is determined that the keyword is at the end, the start position s of the keyword and the current position pointer p are advanced to the character following the start position s of the current keyword (step 28).

Then, it is determined whether or not the start position s of the keyword has reached the end of the input character string (step 2).
9). If the start position s of the keyword has not reached the end of the input character string, the process returns to step S23.

In the above example, when "Hanshin vs. Hiroshima" is selected as a keyword, in step 26,
It is determined that the end of the word in the dictionary is the end of the input character string, and the start position s and the current position pointer p of the keyword are moved to “God” in the “Hanshin-Hiroshima match”. Then, by repeating steps 23 to 27, the character strings "God", "God pair", "God vs Hiroshima", and "God vs Hiroshima match" are selected as keywords.

Thereafter, the start position s of the keyword and the current position pointer p are moved to the “pair” of the “Hanshin-Hiroshima match”. Then, by repeating steps 23 to 27, the character strings “pair”, “vs. Hiroshima”, and “vs. Hiroshima” are selected as keywords.

Thereafter, the start position s of the keyword and the current position pointer p are moved to "Hiro" in the "Hanshin-Hiroshima match". Then, by repeating steps 23 to 27, the character strings "Hiroshima" and "Hiroshima match" are selected as keywords.

Thereafter, the keyword start position s and the current position pointer p are moved to the "island" of the "Hanshin-Hiroshima match". Then, by repeating steps 23 to 27, the character strings "island" and "island battle" are selected as keywords.

Thereafter, the start position s of the keyword and the current position pointer p are moved to the “battle” of the “Hanshin-Hiroshima match”. Then, by performing the processing of steps 23 to 25, the character "island" is selected as a keyword. Then, the process proceeds to steps 26 to 28, where the start position s of the keyword and the current position pointer p are moved to the last “battle” of the “Hanshin-Hiroshima match”. `` Hanshin vs Hiroshima game ''
Is terminated based on the keyword.

In the above example, "Hanshin vs. Hiroshima"
"Hanshin", "Hanshin vs. Hiroshima", "Hanshin vs. Hiroshima", "God", "God vs.", "God vs. Hiroshima", "God vs. Hiroshima", "VS", "VS." Hiroshima "," Fight against Hiroshima "," Hiroshima ",
“Hiroshima match”, “island”, “island match”, and “match” are extracted as keywords.

(2) Description of the second method

In the second method, a word in program guide information such as a program is extracted as a keyword, and various compound word strings included in a part where two or more words of a specific part of speech in the program guide information are connected. In this method, a keyword whose connection relation between words included in the compound word string matches a predetermined rule is extracted as a keyword.

FIG. 6 shows a procedure for determining a search keyword by the second method.

The second method is substantially the same as the first method, except that step 34 corresponding to step 24 in FIG. 5 is different. That is, in step 34, it is not determined whether or not the part of speech of the dictionary-reduced word w corresponds to a specific part of speech. Has been determined. This determination method will be described later. If a word does not exist immediately before the word w in the dictionary, it is determined that the part of speech of the word w in the dictionary can be connected to the immediately preceding word.

If the part of speech of the word w retrieved from the dictionary can be connected to the immediately preceding word, the process proceeds to step 35. If the part of speech of the word w that has been looked up in the dictionary is not connectable to the immediately preceding word, the process proceeds to step 38.

The determination as to whether or not the part of speech of the word w retrieved from the dictionary can be connected to the immediately preceding word is performed based on the connection table shown in FIG.

The connection table is a table that stores whether or not the part of speech of the immediately preceding word and the part of speech of the dictionary-reduced word are connectable. In the connection table, “0” indicates that connection is impossible, and “1” indicates that connection is possible.

Also in the second method, when the input character string is "Hanshin vs. Hiroshima", similarly to the first method, "Hanshin", "Hanshin vs.", "Hanshin vs. Hiroshima", "Hanshin vs. Hiroshima" War, god, god vs. god vs. Hiroshima, god vs. Hiroshima, vs., vs. Hiroshima, vs. Hiroshima, Hiroshima,
“Hiroshima match”, “island”, “island match”, and “match” are extracted as keywords.

(3) Description of the third method

In the third method, a character string in a format frequently used as program guide information is created as a template including a variable part and a fixed part, and a character string matching the template is extracted from the program guide information. In this method, a portion corresponding to the variable portion of the template in the extracted character string is extracted as a keyword.

That is, first, based on the program guide information,
A character string in a format often used in a program name or the like is created as a template including a variable part and a fixed part. For example, if the variable part is represented by *, "* vs. *
Battle, “* vs. *”, “*-*”, “* VS *”, “*.
Templates such as “* talk” and “* / * talk” are created in advance. Then, a part matching the template is extracted from the input character string, and a variable part * of the template is extracted as a keyword.

If the input character string is "Hanshin vs. Hiroshima match", it matches the template "* vs. * match", so that the variable portions "Hanshin" and "Hiroshima" are extracted as keywords. You.

According to the above-described embodiment, the user simply inputs a word for specifying a program to be selected, and the corresponding program is automatically searched. This makes it easy to search for a program.

[0061]

According to the present invention, it is an object of the present invention to provide a digital television broadcast receiver which makes it easy to search for a program.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a digital television broadcast receiver.

FIG. 2 is a schematic diagram showing an example of a program guide screen.

FIG. 3 is a flowchart showing a procedure of a speech recognition dictionary creation process performed by a system controller 20;

FIG. 4 is a flowchart showing a procedure of a program search process by voice input performed by the system controller 20.

FIG. 5 is a flowchart illustrating a procedure for determining a search keyword according to a first method.

FIG. 6 is a flowchart illustrating a procedure for determining a search keyword according to a second method.

FIG. 7 is a schematic diagram showing a connection table.

[Explanation of symbols]

 Reference Signs List 20 system controller 21 ROM 22 RAM 23 nonvolatile memory 24 voice input device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/03 7/035 (72) Inventor Naoyuki Yoda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kozo Oi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term (reference) 5C025 AA23 CB09 CB10 DA01 DA05 5C026 DA00 5C063 AB03 AC01 AC05 AC10 CA12 CA29 EB33 EB49 5D015 BB01

Claims (5)

[Claims] 1. A first means for extracting a plurality of keywords for performing a program search from program guide information; a second means for creating a voice recognition dictionary including readings of the extracted keywords; and specifying a program to be selected. Means for prompting the user to input words for speech, voice recognition processing for the input voice based on the voice recognition dictionary, and fourth means for extracting a keyword corresponding to the input voice, and A digital television broadcast receiver, comprising: fifth means for searching for a program based on a keyword. 2. The digital television broadcast receiver according to claim 1, further comprising means for displaying information on the searched program. 3. The first means extracts a word corresponding to a specific part of speech in the program guide information as a keyword, and extracts various words included in a portion where two or more words of the specific part of speech in the program guide information are connected. 3. The digital television broadcast receiver according to claim 1, wherein the compound word strings are extracted as keywords. 4. The first means extracts a word in the program guide information as a keyword, and includes a compound word string among various compound word strings included in a portion where two or more words in the program guide information are connected. 3. The digital television broadcast receiver according to claim 1, wherein a keyword whose connection relation with a word included in the keyword matches a predetermined rule is extracted as a keyword. The first means creates a character string in a format frequently used as program guide information as a template including a variable part and a fixed part, and extracts a character string matching the template from the program guide information. 3. The digital television broadcast receiver according to claim 1, wherein a portion corresponding to a variable portion of the template in the extracted character string is extracted as a keyword.