JP2008193377A - Recorder, electronic apparatus, recording method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recorder, electronic apparatus, recording method and program by which broadcast contents can efficiently be utilized for language study. <P>SOLUTION: The recorder 1 receives the broadcast signal of TV broadcast with the use of a tuner 102, acquires language information included in the received broadcast signal by a system control part 101, determines whether the acquired language information is suitable for a predetermined language learning level or not, acquires a scene corresponding to the language information which is determined to be suitable for the language learning level, and stores the scene in a video recording part 32. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a recording apparatus, an electronic device, a recording method, and a program for recording a video.

Conventionally, language learning using video content has been widely performed. As an apparatus for language learning using video content, for example, an apparatus that repeatedly displays a portion where a specific caption is displayed is known (for example, see Patent Document 1).
JP 09-115224 A

By the way, in recent years, with the spread of satellite broadcasting and digital television broadcasting, it has become possible to view a much larger number of video content than conventional terrestrial analog television broadcasting. Opportunities to watch created movies and dramas are increasing.
Although it is possible to use these movies and dramas for language learning, movies and dramas that are not produced as language learning materials contain expressions of various difficulty levels,
There was a problem that it was difficult to expect a learning effect because the expression was too difficult to understand or too easy.

The present invention has been made in view of the above-described circumstances, and an object of the present invention is to use not only video content for learning but also video content used for broadcasting for language learning.

[Mode 1] In order to solve the above-described problem, a recording apparatus according to mode 1 includes a receiving unit that receives a broadcast signal of a television broadcast, and language information acquisition that acquires language information included in the broadcast signal received by the receiving unit. Means for determining whether or not the language information acquired by the language information acquisition means is suitable for a preset word learning maturity, and the determination means from the broadcast signal received by the reception means A scene acquisition unit that acquires a scene corresponding to the language information determined to be suitable for the language learning maturity by the recording unit, and a recording unit that records the scene acquired by the scene acquisition unit. .
According to this configuration, a television broadcast is received, and a scene suitable for the set word learning maturity is recorded in the received broadcast signal, so that it is suitable for language learning from various video contents of the television broadcast. You can collect only the parts and use them for language learning. As a result, language learning can be performed by effectively utilizing various video contents not intended for language learning. Further, by recording only scenes suitable for language learning among broadcast video contents, there is an advantage that the capacity of a recording medium required for recording video contents can be reduced.

[Mode 2] The recording device according to mode 2 is the recording device according to mode 1, wherein the learning level-specific information storage means stores language elements suitable for the word learning proficiency and stores language elements classified by proficiency level. And the determination means collates the linguistic information acquired by the linguistic information acquisition means with the linguistic element by proficiency corresponding to the preset word learning proficiency level, so that the linguistic information is preset. It is characterized in that it is determined whether or not it is suitable for the learned word learning maturity.
In this case, it is possible to determine at high speed and reliably whether or not the language information included in the broadcast signal is suitable for the set word learning maturity by using the language elements accumulated for each word learning maturity.

[Mode 3] The recording apparatus of mode 3 is the recording apparatus of mode 1 or 2, further comprising storage means for storing the broadcast signal received by the receiving means, and the scene acquisition means is configured to increase word learning maturity by the determining means. A scene corresponding to language information determined to be suitable is acquired from the storage means.
In this case, since the received broadcast signal is stored and the scene corresponding to the language information determined to be suitable for the set word learning maturity is acquired and recorded from the stored broadcast signal, Even if it takes time to determine whether or not it is appropriate for the set word proficiency level,
You can record scenes useful for language learning without omission.

[Mode 4] The recording device according to mode 4 is the recording device according to any one of modes 1 to 3, wherein the language information acquisition means includes image data for displaying a caption in the broadcast signal.
By recognizing the subtitle character string displayed by the image data, the subtitle character string is converted into text data, and the text data is acquired as the language information.
In this case, the text data including the subtitle character string is obtained by converting the subtitle character string into the text data from the broadcast signal including the subtitle in the image data format, and the word learning maturity in which the text data is set is obtained. Since it is determined whether or not it is suitable, when a subtitle is included in the format of the image data in the broadcast signal, the subtitle can be used to perform a fast and reliable determination, which is useful for language learning. The scene can be recorded more reliably.

[Embodiment 5] The recording device of Embodiment 5 is the recording device according to any one of Embodiments 1 to 3, wherein the language information acquisition unit includes a text string displayed as subtitles in the broadcast signal as text data. In addition, the text data is acquired as the language information.
In this case, text data including subtitle character strings is quickly acquired from the broadcast signal to determine whether it is suitable for word learning maturity, so that high-speed and reliable determination can be performed, which is useful for language learning. More reliable scenes can be recorded.

[Mode 6] The recording device according to mode 6 is the recording device according to any one of modes 1 to 3, wherein the language information acquisition unit performs speech recognition on the speech included in the broadcast signal to convert the speech into text data. Converting and acquiring the text data as the language information.
In this case, even when the subtitle is not included in the broadcast signal, text data is obtained by voice recognition, and it is determined whether or not this text data is suitable for the set word learning maturity. And reliable determination can be executed. Thereby, even video content without subtitles can be used for language learning, so that various video content can be used effectively.

[Mode 7] The recording apparatus according to mode 7 is the recording apparatus according to any one of modes 4 to 6, wherein the determination unit is suitable for a word learning maturity preset in the text data acquired by the language information acquisition unit. The determination is made based on whether or not a language element is included.
In this case, since it is determined whether or not the text data includes a language element suitable for the preset word learning maturity, it is determined whether or not it is suitable for the word learning maturity. Yes.

[Mode 8] The recording device according to mode 8 is the recording device according to any one of modes 4 to 7, wherein the recording unit records the text data acquired by the language information acquisition unit in association with the scene. It is characterized by.
In this case, text data is recorded in association with a scene suitable for word learning maturity. Since this text data is strongly related to the contents of the scene, using this text data makes it possible to easily search and extract the recorded scene and manage the recorded video content easily.

[Mode 9] The recording apparatus according to mode 9 is characterized in that the recording apparatus according to any one of modes 1 to 8 is provided with a reproducing means for reproducing the scene recorded in the recording means.
In this case, language learning can be performed by reproducing a scene suitable for the word learning maturity.

[Mode 10] An electronic device according to mode 10 includes the recording device according to any one of modes 1 to 9.
According to this electronic apparatus, operations and effects equivalent to those of the recording apparatuses according to modes 1 to 9 can be obtained.

[Mode 11] A recording method according to mode 11 includes a reception step of receiving a broadcast signal of a television broadcast, a language information acquisition step of acquiring language information included in the broadcast signal received in the reception step, and the language information acquisition From the determination step of determining whether the language information acquired in the step is suitable for a preset word learning maturity level, and from the broadcast signal received in the reception step, it is suitable for the word learning maturity level in the determination step. A scene acquisition step of acquiring a scene corresponding to the language information determined to be present, and a recording step of recording the scene acquired in the scene acquisition step.
According to this recording method, the same operation and effect as those of the recording apparatus of aspect 1 can be obtained.

[Mode 12] In order to solve the above problem, a program according to mode 12
Receiving means for receiving a broadcast signal of television broadcast, language information acquiring means for acquiring language information included in the broadcast signal received by the receiving means, and language information acquired by the language information acquiring means are preset. And a scene corresponding to language information determined by the determination unit to be suitable for word learning maturity from a broadcast signal received by the receiving unit And a recording unit for recording the scene acquired by the scene acquiring unit.
According to this program, when the program is read by the computer and the computer executes processing in accordance with the read program, the same operations and effects as those of the recording apparatus of mode 1 can be obtained.

[Mode 13] In order to solve the above problem, the recording medium according to mode 13 obtains language information included in a broadcast signal received by the reception unit and a reception signal received by the reception unit from a computer. A language information acquisition unit; a determination unit that determines whether or not the language information acquired by the language information acquisition unit is suitable for a preset language learning maturity;
Scene acquisition means for acquiring a scene corresponding to language information determined to be suitable for word learning maturity by the determination means from the broadcast signal received by the reception means; and a scene acquired by the scene acquisition means It is a recording medium in which a program that functions as recording means for recording is recorded in a computer-readable manner.
According to this recording medium, the program is read from the recording medium by the computer,
When the computer executes the process according to the read program, the same operation and effect as those of the recording apparatus of mode 1 can be obtained.

Here, the recording medium referred to in the form 13 is a semiconductor recording medium such as RAM or ROM, FD, H
Magnetic storage type recording medium such as D, optical reading type recording medium such as CD, CDV, LD, DVD,
Any recording medium that is a computer-readable recording medium, such as an MO, magnetic recording type / optical reading type recording medium, regardless of the electronic, magnetic, optical, etc. reading method It may be a medium.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a recording apparatus 1 according to a first embodiment to which the present invention is applied.
A recording apparatus 1 described below is a user who wants to learn a language (hereinafter referred to as a learner).
According to the above operation, a television broadcast is received, a scene suitable for the learner's proficiency in language learning is recorded (recorded) from the broadcast video content, and can be played back.

As shown in FIG. 1, the recording apparatus 1 is executed by a CPU 11 that controls each unit, various programs such as a control program executed by the CPU 11, a ROM 12 that stores data related to these various programs, and the CPU 11. RAM 13 for temporarily storing various programs and data related to these various programs, and a D / A converter (
DAC) 14, and these components are interconnected by a bus 10. The D / A converter 14 outputs a sound based on an analog video signal output from the D / A converter 14 and a monitor 15 that outputs video based on the analog video signal output from the D / A converter 14. An output speaker 16 is connected.

The CPU 11 reads the program stored in the ROM 12 and develops and executes it in a work area provided in the RAM 13, thereby realizing the function of the recording apparatus 1 described later.
The ROM 12 is a non-volatile storage device configured using a semiconductor memory element or the like, and a CPU
A program executed by the CPU 11 is stored so as to be readable by the CPU 11. The RAM 13 is a volatile or non-volatile storage device configured using a semiconductor memory element or the like, and forms the work area.

The D / A converter 14 converts the digital video signal processed by the CPU 11 or the like into an analog video signal and outputs the analog video signal to the monitor 15. Further, the D / A converter 14 is connected to the CPU 1
The digital audio signal processed by 1 or the like is converted into an analog signal and output to the speaker 16.
The monitor 15 is a display device having a display screen such as a liquid crystal display panel, a plasma display panel, a rear projection display, a CRT (Cathode Ray Tube), or a projector that projects an image on an external screen. Monitor 15 is D /
Based on the analog video signal input from the A converter 14, the video is displayed on the display screen. Here, the video mainly refers to a moving image, but may be a still image.
The speaker 16 is a speaker that outputs sound based on the analog audio signal input from the D / A converter 14 and may include an amplifier (not shown) that amplifies the analog audio signal.
Further, the monitor 15 and the speaker 16 may be installed outside the recording apparatus 1, or may be disposed in the same casing as other parts constituting the recording apparatus 1. Further, the monitor 15 and the speaker 16 may be configured integrally or may be configured separately.

The monitor 15 may be provided with a display circuit (not shown) that displays an image on the display screen based on a digital video signal. In this case, the D / A converter 14 is connected to the CPU 1
The digital video signal processed by 1 or the like is converted into a format that can be processed by the monitor 15 and output. The speaker 16 may include a digital audio processing circuit (not shown) that processes a digital audio signal and outputs audio. In this case, the D / A converter 14
Converts the digital audio signal processed by the CPU 11 or the like into a format that can be processed by the speaker 16 and outputs it.

In addition, the recording device 1 receives a broadcast signal by an antenna 21 installed outside or inside the device and demodulates the signal according to the control of the CPU 11, and decodes the signal processed by the front end processing unit 17. The decoder 18 is provided.
Broadcasts received by the recording apparatus 1 include terrestrial digital television broadcasts, terrestrial analog television broadcasts, BS (Broadcasting Satellite) analog television broadcasts, BS digital television broadcasts, and CS (Communication Satellite) digital television broadcasts. Various broadcasts are listed. In the first embodiment and the embodiments to be described later, as an example, a case of receiving terrestrial digital television broadcast will be described as an example.
In the terrestrial digital television broadcast received by the recording device 1, in addition to the video and audio of the video content to be broadcast, information for subtitles for displaying the subtitles over the video is included. The information for subtitles is text data (for example, closed captions or digital broadcast subtitle data) in which sub-video data (so-called sub-pictures) to be displayed superimposed on the video data and character strings to be displayed as subtitles are integrated. There are two types. The sub-picture data is image data having a transparent background and subtitles arranged on either the left or right side or bottom.
The information including the video, audio, and subtitles is transmitted from the broadcast station as a video transport stream (TS), audio TS, and accompanying TS according to the MPEG-2 system.

The front-end processing unit 17 has a channel selection function that selects a specific channel from a broadcast signal of a television broadcast that can be received by the antenna 21, a demodulation function that demodulates the broadcast signal of the selected channel, an error correction function, and the like. ing. The decoder 18 includes a front end processing unit 17.
Decodes and separates the broadcast signal demodulated by the video TS, audio TS, and associated T
S is output.

As a user interface for a learner to operate the recording apparatus 1, the recording apparatus 1 includes a remote control device 22. The remote control device 22 includes a plurality of key switches (not shown) operated by a learner and an infrared transmission unit (not shown) that transmits an infrared signal in response to the operation of the key switches. The infrared signal transmitted by the remote control device 22 is received by the remote control signal receiver 19 provided in the recording device 1. The remote control signal receiver 19 receives the infrared signal transmitted from the remote control device 22, identifies the operation of the key switch, generates an operation signal indicating the operated key switch, and outputs the operation signal to the CPU 11.

The recording device 1 also includes a storage device 30 that stores various data processed by the CPU 11 using an optical recording medium, a magnetic recording medium such as a hard disk device, or a recording medium using a semiconductor storage element. The storage device 30 is provided with a plurality of storage areas virtually or physically. These storage areas include a foreign language dictionary unit 31 as information storage means by skill level and a video recording unit 32 as recording means.

FIG. 2 is a diagram schematically showing the configuration of the foreign language dictionary unit 31.
The foreign language dictionary unit 31 learns foreign language language elements (including words, idioms, idioms, phrases such as slang, grammatical information such as syntax, etc., hereinafter referred to as words). It is a dictionary stored by level (word learning maturity). That is, as shown in FIG.
1 stores a level-specific phrase collection 31A in which phrases suitable for each learning level are accumulated for each learning level of levels 1, 2, 3, 4,.
For example, when learning English using the recording device 1, the level-specific phrase collection 31A corresponding to level 1 includes words suitable for learning corresponding to TOEIC (Test of English for International Communication) scores of 900 or more. The level-specific phrase collection 31A corresponding to level 2 includes TOEIC scores 800 to 900, and level-specific phrase collection 3 corresponding to level 3
1A includes words and the like suitable for learning corresponding to a TOEIC score of 700 to 800 points. A learner who learns a foreign language using the recording device 1 designates his / her learning level by operating the remote control device 22, for example, so that a plurality of level-specific phrase collections 31 </ b> A stored in the foreign language dictionary unit 31 can be stored. From among them, a level-specific phrase collection 31A corresponding to the proficiency level of the learner is selected.
Here, the level-specific phrase collection 31A may include a foreign language phrase or the like to be studied as a phrase according to the proficiency level, or a Japanese phrase for the foreign language phrase, etc. Etc. may be included. In other words, it corresponds to either the case where a foreign language subtitle is added to video content containing Japanese audio or the case where a Japanese subtitle is added to video content containing foreign language audio. It may be.

In addition, the video recording unit 32 shown in FIG. 1 can view information accompanying video, audio, and subtitles of video content received by the recording device 1 by the recording device 1 or other devices. This is a storage area for storing. The video recording unit 32 is substantially used as a recording medium for recording video and audio. That is, storing video and audio in the video recording unit 32 corresponds to “recording” or “recording” of video and audio.
Information associated with video, audio, and subtitles of video content stored in the video recording unit 32 is reproduced by the recording device 1 in accordance with the operation of the remote control device 22.

FIG. 3 is a functional block diagram illustrating functions realized by each unit of the recording apparatus 1. Each functional block shown in FIG. 3 may be a virtual one realized by executing a program by the CPU 11, and the specific hardware constituting the recording apparatus 1 is divided as shown in FIG. Need not be implemented.
For example, the system control unit 101 and the level matching scene extraction unit 111 shown in FIG. 3 are realized as functions of the CPU 11 in FIG. 1, and the tuner 102 and the signal processing unit 103 are realized as functions of the front end processing unit 17 in FIG. , Data separation unit 104, video signal decoding unit 105, video synthesis unit 106, audio signal decoding unit 107, and OSD (On Screen
Each part of the (Display) processing unit 108 is realized as a function of the decoder 18. The temporary storage unit 112 is realized as one of the storage areas of the storage device 30 shown in FIG.

The system control unit 101 shown in FIG. 3 controls each unit shown in FIG. 3 according to the operation of the remote control device 22 (FIG. 1), and for example, receives a broadcast of a channel designated by the operation of the remote control device 22. Control information specifying a channel to be selected is output to 102.
The tuner 102 selects a broadcast that can be received via the antenna 21, and receives a broadcast of a designated channel according to the control of the system control unit 101. The broadcast signal received by the tuner 102 is demodulated by the signal processing unit 103, further subjected to processing such as error correction processing, and output to the data separation unit 104. The data separation unit 104 is connected to the signal processing unit 1
The broadcast signal input from 03 is separated into a video TS, an audio TS, and an accompanying TS, and output to the video signal decoding unit 105, the video synthesis unit 106, and the system control unit 101.

The video signal decoding unit 105 decodes the video TS input from the data separation unit 104 to generate a digital video signal, and outputs the digital video signal to the video synthesis unit 106.
Further, the system control unit 101 acquires text data of characters to be displayed as subtitles from the accompanying TS input from the data separation unit 104, and uses this text data as the OSD processing unit 10
8 is output. Based on the text data input from the system control unit 101, the OSD processing unit 108 generates a subtitle video signal for displaying characters superimposed on the video, and outputs the subtitle video signal to the video synthesis unit 106.

The video synthesizing unit 106 receives the digital video signal input from the video signal decoding unit 105,
A digital video signal for displaying the caption video signal input from the OSD processing unit 108 in a superimposed manner is generated and output to the D / A converter 14. The D / A converter 14 converts the digital video signal input from the video synthesis unit 106 into an analog video signal and outputs the analog video signal to the monitor 15 to display a video with captions on the display screen of the monitor 15.
The audio signal decoding unit 107 decodes the audio TS input from the data separation unit 104 to generate a digital audio signal and outputs the digital audio signal to the D / A converter 14. The D / A converter 14 converts the digital audio signal input from the audio signal decoding unit 107 into an analog audio signal, outputs the analog audio signal to the speaker 16, and outputs audio from the speaker 16.

Further, the signal processing unit 103 outputs the processed broadcast signal subjected to processing such as demodulation and error correction processing to the temporary storage unit 112 as storage means. The temporary storage unit 112 is a storage area for temporarily storing the broadcast signal input from the signal processing unit 103, and stores the broadcast signal for a predetermined time. For example, when the temporary storage unit 112 stores a broadcast signal for 10 minutes, the temporary storage unit 112 receives the signal from the signal processing unit 103 during the first 10 minutes after the tuner 102 starts receiving the designated channel. The broadcast signal to be input is stored. After that, the temporary storage unit 112 deletes the oldest part of the already stored broadcast signals, and stores the broadcast signal newly input from the signal processing unit 103 in the storage area that is freed by this deletion.
In other words, the temporary storage unit 112 stores the broadcast signals input from the signal processing unit 103 sequentially, and sequentially deletes the old broadcast signals, so that the state where the broadcast signals for a predetermined time are always stored is maintained. The broadcast signal stored in the temporary storage unit 112 includes video and audio of the received video content and information associated with the video.
Here, the unit for deleting the broadcast signal by the temporary storage unit 112 is arbitrary. For example, as in the above-described scene, a sequence in an MPEG-2 format image, GOP (Group of Picture).
), Frames (I, P, and B pictures) or the like, or a time of one second or several seconds.

In addition, when the accompanying TS input from the data separation unit 104 includes text data of characters to be displayed as subtitles, the system control unit 101 performs a process of extracting the text data. In addition, when the accompanying TS includes a caption video to be displayed over the video TS, the system control unit 101 converts the character string displayed in the caption video into text. , Process to generate text data. Specifically, an image of a portion including subtitle characters is cut out from the subtitle video, and character recognition processing is executed on the image to generate text data. In this way, the system control unit 101 acquires text data indicating a caption of the broadcast video content.

Then, the system control unit 101 sends the text data acquired from the accompanying TS and the video TS
Together with the synchronization information indicating the display timing and the synchronization state of the video and subtitles of the video and the subtitles, it is output to the level compatible scene extraction unit 111.
The level matching scene extraction unit 111 determines whether the text data input from the system control unit 101 includes an expression suitable for a preset learner's word learning maturity. In this determination, the level-appropriate scene extracting unit 111 corresponds to the level corresponding to the word learning maturity preset by the operation of the remote control device 22 in the level-specific phrase collection 31A (FIG. 2) stored in the foreign language dictionary unit 31. The different phrase collection 31A is referred to, and the phrase included in the level classified phrase collection 31A is compared with the text data input from the system control unit 101. When the input text data includes a phrase or the like of the level-specific phrase collection 31A, control information indicating that the text data is suitable for the learner's proficiency level is output to the system control unit 101.

When the control information indicating that the text data is suitable for the learner's proficiency level is input from the level-adapted scene extraction unit 111, the system control unit 101 displays the broadcast signal stored in the temporary storage unit 112 as a video. Control is performed so as to be stored in the recording unit 32.
Further, the system control unit 101 may store all of the broadcast signals for a predetermined time stored in the temporary storage unit 112 in the video recording unit 32, but the text determined by the level matching scene extraction unit 111. Based on the synchronization information corresponding to the data, only the scene in which this text data is displayed as subtitles or a broadcast signal including scenes before and after that scene may be stored in the video recording unit 32.

Here, the scene is a part of an arbitrary length in the video content received by the recording apparatus 1, and indicates, for example, a part of video / audio that does not include subtitle switching. The length of the scene is, for example, a sequence, GOP, frame (I, P) in an MPEG-2 format image.
, B)) and the like. Also, according to the recording apparatus 1, when a plurality of scenes are cut out from the received video content, the plurality of scenes do not have to be the same length, and can be different lengths.
In the first embodiment, the recording apparatus 1 performs processing for individual subtitles displayed in the video content. Therefore, the video content may be divided into individual scenes when the subtitles are switched. In other words, subtitles are visuals of the audio attached to the video,
The subtitles are switched and displayed every few seconds to several tens of seconds according to the sound, and one subtitle is continuously displayed for several seconds to several tens of seconds. For this reason, for example, a portion of several seconds to several tens of seconds in which the text data determined by the level-appropriate scene extraction unit 111 is displayed as a caption may be a single scene.

As described above, according to the recording apparatus 1, in the broadcast received via the antenna 21, the video, audio, and subtitles of the scene suitable for the learner's proficiency level are stored in the video recording unit 32. Can be viewed at any time for learning purposes, and video content broadcast on television can be effectively utilized for language learning.

Hereinafter, the operation of the recording apparatus 1 will be described in detail.
FIG. 4 is a flowchart showing the recording operation of the recording apparatus 1.
In the recording operation shown in FIG. 4, the system control unit 101 functions as a language information acquisition unit and a scene acquisition unit, the tuner 102 functions as a reception unit, and the temporary storage unit 112 functions as a recording unit together with the video recording unit 32. . Further, the level matching scene extraction unit 111 functions as a determination unit.
This recording operation is executed by turning on the power of the recording device 1 by operating the remote control device 22 and starting reception of the channel designated by the operation of the remote control device 22 by the tuner 102.

The system control unit 101 included in the recording apparatus 1 determines whether or not the scene extraction recording function for recording a scene suitable for the learner's word learning maturity is set to ON (step S11).
. The scene extraction / recording function can be turned ON / OFF by operating the remote control device 22. When the scene extraction / recording function is OFF, the recording device 1 is, for example, the antenna 2
1 outputs the video and audio of the broadcast received by 1 from the monitor 15 and the speaker 16, thereby functioning as a normal television receiver.

When the scene extraction / recording function is ON (step S11; Yes), the system control unit 101 determines whether or not the learner's word learning maturity is set (step S12).
). When the proficiency level is not set here (step S12; No), the system control unit 1
01 controls the OSD processing unit 108 to display a proficiency level setting screen for setting proficiency levels on the display screen of the monitor 15 (step S13), and returns to step S12.
When the learner operates the remote controller 22 to set the proficiency level, or when the proficiency level is set in advance (step S12; Yes), the system control unit 101 receives the broadcast signal received by the tuner 102. Is stored in the temporary storage unit 112 (step S14).

Subsequently, the system control unit 101 uses the accompanying TS input from the data separation unit 104 as follows:
Text data of characters to be displayed as subtitles and synchronization information for displaying the characters in synchronism with the video are extracted and acquired, and output to the level matching scene extraction unit 111 (step S).
15). In step S15, the system control unit 101 acquires, for example, text data corresponding to subtitles displayed on one screen from the accompanying TS.
The level matching scene extraction unit 111 collects the level-specific phrase collection 3 corresponding to the proficiency level set in advance.
1A is collated with the text data input from the system control unit 101 (step S).
16). Here, in the case where the text data does not include a phrase or the like of the level-specific phrase collection 31A (
In step S17; No), the level matching scene extraction unit 111 outputs control information indicating that there is no corresponding text data to the system control unit 101. The system control unit 101 refers to this control information, returns to the operation of step S15, and acquires text data corresponding to the next subtitle for one screen.

On the other hand, in the text data input from the system control unit 101, the level-specific phrase collection 31
When the phrase A or the like is included (step S17; Yes), the level matching scene extraction unit 111
Outputs control information indicating that the corresponding text data exists to the system control unit 101. Based on this control information, the system control unit 101 acquires a part of the broadcast signal synchronized with the text data from the broadcast signal stored in the temporary storage unit 112 (step S1).
8) The image data is stored in the video recording unit 32 in association with the text data (step S19).
. As a result, a part of the video content is stored in the video recording unit 32.
In step S15 described above, the system control unit 101 acquires text data corresponding to characters displayed in one caption display. Therefore, in step S18, information such as video and audio output while displaying this single caption and information such as subtitles accompanying this video and audio are acquired, and in step S19, the video recording unit 32 acquires the information. Remember me. As a result, the video recording unit 32 stores video, audio, and accompanying information of a portion suitable for the learner's proficiency level. The video recording unit 32 stores text data acquired by the system control unit 101 in association with video content. This text data is, for example, a dialogue of video content and is strongly related to the content of the video content. Therefore, this text data can be used for retrieval or the like as so-called metadata (index) by associating it with video content.

Thereafter, the system control unit 101 determines whether or not the scene extraction / recording function has been switched off (step S20), returns to step S15 until the scene extraction / recording function is switched off, and continues the process, thereby extracting and recording the scene. If the function is switched off,
The storage in the temporary storage unit 112 is terminated (step S21).

Through the above recording operation, a scene suitable for the learner's proficiency level can be stored in the video recording unit 32 from the broadcast video content received via the antenna 21.
Further, the above recording operation can be performed while the learner is viewing the video content during broadcasting, or can be automatically performed when the learner is absent.
For example, if you want to study language by watching video content with foreign language audio and learner's native language subtitles, the learner may want to enjoy the video content as entertainment first. is there. In such a case, the learner operates the recording device 1 to output the video and audio of the video content with the subtitles of the learner's native language displayed at the time of broadcasting, while performing the above recording process in the background. Let it run. Then, after the broadcast ends, the language stored in the video recording unit 32 may be reproduced by replaying the scene. In addition, in order to actively collect scenes of video content for language learning, the learner sets a level-specific phrase collection 31A corresponding to his / her language learning proficiency level, and then uses the tuner 102 to speak foreign language audio. The program (video content) marked with is designated and the recording process is executed. In this way, the learning video content is stored in the video recording unit 32 while the learner is performing other work away from the recording device 1. In such a case, the video and audio are displayed on the monitor 15.
Therefore, the video signal decoding unit 105, the video synthesizing unit 106, the audio signal decoding unit 107, the OSD processing unit 108, the D / A converter 14, the monitor 15, and the speaker 16 stop operating. There is no problem. Note that the recording device 1 may have a reservation function for receiving a plurality of programs designated in advance by operating the remote control device 22. In this case, there is an advantage that a scene suitable for learning can be extracted from a large number of video contents and stored in the video recording unit 32 while the learner does not perform an operation.

FIG. 5 is a flowchart showing a reproduction operation for reproducing the video content stored in the video recording unit 32 by the operation of FIG. When this reproduction operation is performed, the system control unit 101 includes a data separation unit 104, a video signal decoding unit 105, a video synthesis unit 106, an audio signal decoding unit 107, an OSD processing unit 108, a D / A converter 14, a monitor 15, and a speaker. 16 functions as a reproducing means.
In the operation of FIG. 5, a list of text data stored in the video recording unit 32 is displayed on the monitor 15.
When desired text data is selected from this list, the video content stored in the video recording unit 32 in association with the selected text data is reproduced.

When a list display of dialogue (text data) is instructed by operation of the remote control device 22 (
In step S31), the system control unit 101 acquires text data stored in the video recording unit 32, and causes the OSD processing unit 108 to generate a video signal of a screen displaying a list of these text data. Thereby, a screen displaying a list of text data is displayed on the monitor 15 (step S32). The system control unit 101 stands by until any text data displayed as a list is selected by operating the remote control device 22 (step S33). Each text data displayed as a list here corresponds to one scene or a plurality of scenes of the video content.

When text data is selected by operating the remote control device 22 (step S33; Y
es), the system control unit 101 reads out the scene signal corresponding to the selected text data from the video recording unit 32, and the data separation unit 104, the video signal decoding unit 105, the video synthesis unit 106, and the audio signal decoding unit 107. And controlling each part of the OSD processing unit 108,
This scene is reproduced (step S34).
Thereafter, when the reproduction of the read scene is completed (step S35; Yes), the system control unit 101 determines whether or not there is an instruction to end the operation by the remote control device 22 (step S3).
6) If there is no instruction to end the operation, the process returns to step S32 to display a list of text data. Further, when the operation end is instructed by the operation of the remote control device 22 (step S36;
Yes), this process ends.

As described above, according to the recording apparatus 1 according to the first embodiment to which the present invention is applied, the information related to the caption attached to the video content received via the antenna 21 is referred to and displayed as this caption. It is determined whether or not the character string is suitable for the learner's proficiency level, and a scene suitable for the learner's proficiency level is extracted and recorded in the video recording unit 32. As a result, scenes suitable for language learning proficiency are recorded from the video content of the television broadcast. Therefore, various video content that is broadcast, including video content that is not for language learning, can be used effectively, Can learn. Further, since only the scene suitable for the learner's proficiency level is recorded in the video recording unit 32, there is an advantage that the capacity required for recording the video content can be reduced.
Furthermore, the recording apparatus 1 can quickly and reliably determine whether or not the subtitle character string attached to the video content includes a phrase or the like of the level-specific phrase collection 31A corresponding to the proficiency level of the learner. Judgment can be made.

Further, the recording apparatus 1 temporarily stores the received video content in the temporary storage unit 112,
A scene suitable for the learner's proficiency level is acquired from a part of the video content stored in the temporary storage unit 112 and stored in the video recording unit 32. Therefore, there is an advantage that the storage capacity can be efficiently used without requiring a storage capacity for storing the entire video content. Furthermore, even if it takes time to determine whether or not it is suitable for the language learning maturity, a scene useful for language learning can be recorded without omission.

In addition, when the received broadcast signal includes caption information in the form of image data, the recording device 1 performs character recognition on the image data, obtains text data including a caption character string, Since it is determined based on this text data whether or not it is suitable for the word learning maturity, even when the subtitle format is image data, a high-speed and reliable determination can be performed. On the other hand, when text data including a subtitle character string is included in the broadcast signal, it is possible to determine at high speed and reliably whether or not the text data is suitable for word learning maturity.
Further, since the video data is stored in the video recording unit 32 in association with the scene suitable for the word learning maturity, the stored scene can be easily searched and extracted using this text data. The video content stored in the video recording unit 32 for language learning can be easily managed.
Since the recording device 1 reproduces the scene of the video content stored in the video recording unit 32 in accordance with the operation of the remote control device 22, it can perform efficient language learning.

[Second Embodiment]
FIG. 6 is a functional block diagram showing functions realized by each unit of the recording apparatus 1 according to the second embodiment to which the present invention is applied. In the second embodiment, the same components as those of the recording apparatus 1 according to the first embodiment are denoted by the same reference numerals and description thereof is omitted.
Each functional block shown in FIG. 6 may be a virtual one realized by executing a program by the CPU 11, and specific hardware constituting the recording apparatus 1 is divided as shown in FIG. Need not be implemented. For example, the voice-text conversion unit 113 illustrated in FIG. 6 is realized as a function of the CPU 11 provided in the recording apparatus 1.

The recording apparatus 1 shown in FIG. 6 records (records) a scene corresponding to the learner's proficiency level when no caption is attached to the broadcast video content received via the antenna 21.
In addition to the configuration in the first embodiment, the recording apparatus 1 includes an audio-text conversion unit 113 that converts audio uttered in the video content received by the tuner 102 into text data. The speech-text conversion unit 113 functions as language information acquisition means, performs speech recognition processing on the digital speech signal decoded by the speech signal decoding unit 107 to generate text data, and generates a level matching scene extraction unit 111. Output to.

An outline of the operation of the recording apparatus 1 shown in FIG. 6 will be described.
The tuner 102 selects a channel designated under the control of the system control unit 101, the broadcast signal of this channel is demodulated in the signal processing unit 103, and further processing such as error correction processing is executed, and the data separation unit 104. Is output. Data separator 104
The broadcast signal input from the signal processing unit 103 is separated, and the video TS, the audio TS, and the accompanying TS are converted into a video signal decoding unit 105, a video synthesis unit 106, and a system control unit 10.
1 is output.
The broadcast signal output from the signal processing unit 103 is also input to the temporary storage unit 112, and the temporary storage unit 112 temporarily stores the broadcast signal for a predetermined time.

The video TS output from the data separation unit 104 is decoded by the video signal decoding unit 105 and output to the video synthesis unit 106. In the video composition unit 106, the system control unit 10
1 is combined with a video signal generated by the OSD processing unit 108 to generate a video signal of a video to be displayed. This video signal is output to the D / A converter 14 and the D / A
It is converted into an analog video signal by the converter 14 and output to the monitor 15.
5 displays an image on the display screen.
The audio TS output from the data separation unit 104 is decoded by the audio signal decoding unit 107 and output to the D / A converter 14. In the D / A converter 14, the digital audio signal input from the audio signal decoding unit 107 is converted into an analog audio signal and output to the speaker 16, and audio is output from the speaker 16.

Further, the digital audio signal output from the audio signal decoding unit 107 to the D / A converter 14 is also branched and input to the audio-text conversion unit 113. The voice-text conversion unit 113 generates text data by voice recognition processing of the input digital voice signal and outputs the text data to the level matching scene extraction unit 111. Also, synchronization information indicating the synchronization state between the conversion source audio and video is output from the audio-text conversion unit 113 to the level matching scene extraction unit 111 together with the text data.
The level-appropriate scene extraction unit 111 refers to the level-specific phrase collection 31A corresponding to a preset proficiency level of the learner, and the words and phrases of the level-specific phrase collection 31A and the speech-text conversion section 1
The text data input from 13 is collated. Then, when the text data includes a phrase or the like of the level-specific phrase collection 31A, the control information indicating that it is suitable for the learner's proficiency level, the synchronization information and the text data input from the speech-text conversion unit 113 Is output to the system control unit 101.

The system control unit 101 refers to the control information input from the level-adaptive scene extraction unit 111, and determines that it is suitable for the learner's proficiency level, from the broadcast signal stored in the temporary storage unit 112. Acquire one scene or multiple scenes. Then, the system control unit 101 associates text data input from the level matching scene extraction unit 111 as metadata (index) with one scene or a plurality of scene videos of the acquired video content and stores them in the video recording unit 32. Let
In other words, the recording device 1 converts the audio of the video content into text data, and collates the converted text data with the level-specific phrase collection 31A, so that a scene suitable for the learner's proficiency from the broadcast video content To get. For this reason, even when video content without subtitles is broadcast, a scene suitable for learning can be recorded.

FIG. 7 is a flowchart showing a recording operation in the second embodiment. The operation shown in FIG. 7 is executed by turning on the power of the recording apparatus 1 by operating the remote controller 22 and starting reception of the channel designated by the operation of the remote controller 22 by the tuner 102.

The system control unit 101 included in the recording apparatus 1 determines whether or not the scene extraction recording function for recording a scene suitable for the learner's word learning maturity is set to ON (step S41).
. When the scene extraction / recording function is OFF, the recording apparatus 1 operates as a normal television receiver. On the other hand, when the scene extraction / recording function is ON (step S41; Yes)
The system control unit 101 determines whether or not the learner's word learning maturity is set (step S42). If the proficiency level is not set (step S42; No), the system control unit 101 controls the OSD processing unit 108 to display a proficiency level setting screen for setting the proficiency level on the monitor 15 ( Step S43) and return to Step S42.
When the learner operates the remote controller 22 to set the proficiency level, or when the proficiency level is set in advance (step S42; Yes), the system control unit 101 receives the broadcast signal received by the tuner 102. Is stored in the temporary storage unit 112 (step S44).

Subsequently, the voice-text conversion unit 113 receives the voice TS input from the data separation unit 104.
Then, synchronization information indicating the synchronization state between the audio and the video is extracted (step S45), and further, voice recognition is performed to generate text data, which is output to the level matching scene extraction unit 111 (step S46). The level matching scene extraction unit 111 collates the input text data with the level-specific phrase collection 31A corresponding to a preset proficiency level (step S47).
Here, when the text data generated by the speech-text conversion unit 113 does not include the words or the like of the level-specific phrase collection 31A (step S48; No), the level matching scene extraction unit 1
11 outputs control information indicating that it is not suitable for the learner's proficiency level to the system control unit 101, and the system control unit 101 refers to this control information and returns to the operation of step S45.

On the other hand, in the text data generated by the speech-text conversion unit 113, the level-specific phrase collection 3
When the phrase 1A is included (step S48; Yes), the level matching scene extraction unit 11
1 outputs control information indicating that it is suitable for the learner's proficiency level to the system control unit 101. The system control unit 101 refers to this control information and acquires the part that is the basis of the text data from the broadcast signal stored in the temporary storage unit 112 (step S49).
The acquired video content is stored in the video recording unit 32 in association with the text data (step S50).
Thereafter, the system control unit 101 determines whether or not the scene extraction / recording function has been switched off (step S51), returns to step S45 until the scene extraction / recording function is switched off, and continues the process, thereby extracting and recording the scene. If the function is switched off,
The storage in the temporary storage unit 112 is terminated (step S52).

According to the recording apparatus 1 according to the second embodiment, when video content without subtitles is broadcast, the broadcast is received and text data is obtained based on the audio of the video content. It is possible to determine whether or not this text data is suitable for a preset word learning maturity level, and to execute a high-speed and reliable determination. Thereby, even video content without subtitles can be used for language learning, so that various video content can be used effectively.
Further, by storing the text data obtained by voice recognition in the video recording unit 32 together with the scene of the video content, management of the video content is facilitated, and the text data is displayed as subtitles when the video content is reproduced. Can also be displayed.

In the first and second embodiments, the broadcast signal is temporarily stored while receiving the broadcast in the temporary storage unit 112 capable of storing video content for a predetermined time. When a large capacity can be secured as the storage capacity of the temporary storage unit 112, the entire program to be received may be stored in the temporary storage unit 112 while receiving the broadcast. In this case, after the broadcast of the video content is completed, a scene suitable for language learning is stored in the video recording unit 32, and thereafter, other parts may be deleted from the temporary storage unit 112.
In the first and second embodiments, whether the scene is suitable for the learner's proficiency level based on whether or not the text data character string includes words or phrases of the level-specific phrase collection 31A. However, for example, based on the voice TS, it may be determined whether or not it is suitable for the word learning maturity based on the speed of the voice.

Further, in each of the above embodiments, when a plurality of subtitles in different languages are added to the video selected / received by the tuner 102, an index may be created for each language. In this case, if the foreign language dictionary unit 31 stores in advance a level-specific phrase collection 31A for each language, this can be easily realized. Furthermore, the recording apparatus 1 is not limited to English, but Japanese, Chinese (Mandarin, Cantonese), Korean, Spanish, French, Russian, German,
It can be used for learning various languages including Portuguese, etc.
A level-specific phrase collection 31A may be prepared for each language to be learned.

In the above embodiment, the recording device 1 is provided with a drive device capable of writing / reading data on a portable recording medium, and video, audio, and text data as metadata (index) stored in the video recording unit 32 are stored. Further, it may be configured to be recordable on a portable recording medium. In this case, you can use a lot of video content for language learning by exchanging a portable recording medium, and you can expect more learning effects, and learners can learn language without getting bored, which improves learning motivation. Can be planned.
Further, the recording device 1 of each of the above embodiments may repeatedly reproduce a scene suitable for the learner's learning level according to the operation of the remote control device 22 in the reproducing operation. In this case, more effective learning can be performed by repeatedly viewing video and audio.
Furthermore, the recording apparatus 1 may change the sound reproduction speed by operating the remote control device 22 in the above reproduction operation.

In the above description, the case where the program for realizing the functions of the recording apparatus 1 shown in FIGS. 3 and 6 is stored in the ROM 12 has been described.
Semiconductor recording media such as ROM, magnetic storage type recording media such as FD and HD, CD, CDV, LD
It is possible to record on an optical reading type recording medium such as a DVD, or a magnetic recording type / optical reading type recording medium such as an MO, and this recording medium can be read by an electronic, magnetic, optical, etc. Regardless of the recording medium, any recording medium that can be read by a computer may be used. Then, the program recorded on these recording media is stored in the CPU 11.
In addition, the recording apparatus 1 is provided with a network interface as a communication interface, and a program is downloaded from the network interface via the network and executed to implement the above-described functions. Also good.

Further, the configuration shown in FIG. 1 is realized mainly by a hardware configuration or by cooperation of hardware and software, and the specific form and physical form of each part constituting the recording apparatus 1 are as follows. Is optional.
Further, the recording apparatus 1 includes a television receiver including a monitor 15 and a speaker 16, an electronic device such as a video deck, a DVD recorder, and a hard disk recorder connected to the external monitor 15 and the speaker 16, a personal computer, and the like And various other devices capable of receiving television broadcasts.

1 is a block diagram illustrating a configuration of a recording apparatus according to a first embodiment. It is a figure which shows the structure of a foreign language dictionary part typically. It is a figure which shows the functional structure of a recording device. It is a flowchart which shows the recording operation of a recording device. It is a flowchart which shows the reproducing operation of a recording device. It is a figure which shows the functional structure of the recording device which concerns on 2nd Embodiment. 6 is a flowchart illustrating a recording operation of a recording apparatus according to a second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Recording device (electronic device), 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... D /
A converter, 15 ... monitor, 16 ... speaker, 17 ... front end processing unit, 18 ... decoder, 19 ... remote control signal receiver, 21 ... antenna, 22 ... remote control device, 30 ... storage device, 31 ... foreign language dictionary unit (learning) Level-specific information storage means), 31A ... Level-specific phrase collection, 32
... video recording unit (recording unit), 101 ... system control unit (language information acquisition unit, scene acquisition unit, recording unit), 102 ... tuner (receiving unit), 103 ... signal processing unit, 105 ... video signal decoding unit, 106 ... Video synthesis unit, 107 ... Audio signal decoding unit, 108 ... OSD processing unit, 111 ... Level matching scene extraction unit (determination unit), 112 ... Temporary storage unit (storage unit),
113: Speech-text conversion unit (language information acquisition means).

Claims (12)

Receiving means for receiving a broadcast signal of a television broadcast;
Language information acquisition means for acquiring language information included in the broadcast signal received by the reception means;
Determining means for determining whether or not the language information acquired by the language information acquiring means is suitable for a preset word learning maturity;
Scene acquisition means for acquiring a scene corresponding to language information determined to be suitable for word learning maturity by the determination means from the broadcast signal received by the reception means;
Recording means for recording the scene acquired by the scene acquisition means;
A recording apparatus comprising: Proficiency level information storage means for storing language elements suitable for the word learning proficiency level, and language elements classified by proficiency level accumulated according to the word learning proficiency level,
The determination unit collates the language information acquired by the language information acquisition unit with the language element according to the proficiency level corresponding to the preset language learning proficiency level. Determining whether it is suitable for proficiency,
The recording apparatus according to claim 1. Storage means for storing the broadcast signal received by the receiving means;
The scene acquisition means acquires, from the storage means, a scene corresponding to the language information determined by the determination means to be suitable for word learning maturity;
The recording apparatus according to claim 1 or 2. The language information acquisition means recognizes the character string of the subtitle displayed by the image data as text data by recognizing the character string of the subtitle displayed by the image data when the broadcast signal includes image data for displaying the subtitle. Converting and obtaining the text data as the language information;
The recording apparatus according to claim 1, wherein the recording apparatus is a recording apparatus. The language information acquisition means acquires the text data as the language information when a character string to be displayed as subtitles is included as text data in the broadcast signal;
The recording apparatus according to claim 1, wherein the recording apparatus is a recording apparatus. The language information acquisition means converts the voice into text data by performing voice recognition on the voice included in the broadcast signal, and acquires the text data as the language information;
The recording apparatus according to claim 1, wherein the recording apparatus is a recording apparatus. The determination means makes a determination based on whether or not the text data acquired by the language information acquisition means includes a language element suitable for a preset word learning maturity;
The recording apparatus according to claim 4, wherein: The recording means records the text data acquired by the language information acquisition means in association with the scene;
The recording apparatus according to claim 4, wherein: Provided with a reproducing means for reproducing the scene recorded in the recording means;
The recording apparatus according to claim 1, wherein:   An electronic apparatus comprising the recording apparatus according to claim 1. A receiving stage for receiving a television broadcast signal;
A language information acquisition step of acquiring language information included in the broadcast signal received in the reception step;
A determination step of determining whether or not the language information acquired in the language information acquisition step is suitable for a preset word learning maturity;
A scene acquisition step of acquiring a scene corresponding to the language information determined to be suitable for word learning maturity in the determination step from the broadcast signal received in the reception step;
A recording stage for recording the scene acquired in the scene acquisition stage;
A recording method comprising: Computer
Receiving means for receiving a broadcast signal of a television broadcast;
Language information acquisition means for acquiring language information included in the broadcast signal received by the reception means;
Determining means for determining whether or not the language information acquired by the language information acquiring means is suitable for a preset word learning maturity;
Scene acquisition means for acquiring a scene corresponding to language information determined to be suitable for word learning maturity by the determination means from the broadcast signal received by the reception means;
Recording means for recording the scene acquired by the scene acquisition means;
A program characterized by making it function.

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