JP2016012894A - Electronic apparatus, and control method and control program of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable retrieval reflecting preference of a user.SOLUTION: An extraction section of an electronic apparatus extracts a plurality of first keywords presented to a user from a plurality of keywords corresponding to a first portion of content which is being viewed by the user at first time by using information corresponding to the content which the user views or records, and a presentation section presents the plurality of first keywords to the user so that they can be selected. A processing section performs processing to retrieve information related to the selected first keyword by using the first keyword selected by the user.

Description

  Embodiments described herein relate generally to an electronic device, a control method for an electronic device, and a control program.

In recent years, the number of broadcasting channels has increased, and the options for viewing programs by users have expanded.
On the other hand, an electronic device such as a video information recording / reproducing apparatus equipped with a function of automatically recording all programs included in a channel and time zone designated by a user is known.

JP 2009-118168 A JP 2009-71623 A JP 2009-38502 A

  In the electronic device described above, since a large number of programs are recorded, it becomes necessary for the user to search for a program or a scene included in the program according to his / her preference, but it does not necessarily reflect the user's preference. It was not always possible to search for the program or scene that was played.

  The present embodiment has been made in view of the above, and an object thereof is to provide an electronic device, a control method for the electronic device, and a control program capable of performing a search reflecting user preferences.

The extraction unit of the electronic device according to the embodiment presents to the user using information corresponding to the content viewed or recorded by the user from a plurality of keywords corresponding to the first portion of the content that the user is viewing at the first time. A plurality of first keywords to be extracted are extracted.
A presentation part presents a plurality of 1st keywords to a user so that selection is possible.
And a process part performs the process for searching the information relevant to the selected 1st keyword using the 1st keyword selected by the user.

FIG. 1 is a block diagram showing a schematic configuration of a video information recording / reproducing apparatus. FIG. 2 is a block diagram showing a functional configuration related to the automatic recording function and the scene search function. FIG. 3 is an explanatory diagram of a display example of the keyword list. FIG. 4 is an explanatory diagram of a display example of a scene list. FIG. 5 is an explanatory diagram of the data format of the caption keyword DB. FIG. 6 is an explanatory diagram of the data format of the EPG keyword DB. FIG. 7 is an explanatory diagram of a data format of the keyword selection history DB. FIG. 8 is an operation flowchart of the embodiment. FIG. 9 is a process flowchart of the keyword extraction process of the keyword extraction processing unit. FIG. 10 is a process flowchart of the keyword selection process. FIG. 11 is a process flowchart of preprocessing for realizing the content recommendation function and the automatic recording function.

Next, embodiments will be described in detail with reference to the drawings.
In this embodiment, a video information recording / reproducing apparatus capable of recording and reproducing a broadcast program will be described as an example of an electronic device.

FIG. 1 is a block diagram showing a schematic configuration of a video information recording / reproducing apparatus.
The video information recording / reproducing apparatus X includes a hard disk drive 1, a media drive 2, a data processor 3, a memory 4, an AV (Audio Video) input unit 5, a TV tuner 6, an encoder 7, a formatter 8, A decoder 9, a V (Video) mixer 10, a selector 11, a D / A (Digital / Analog) converter 12, a D / A converter 13, a display 14, a speaker 15, a signal receiving unit 16, and a key An input unit 17, a microcomputer 18, and a remote control device (remote control) 19 are provided.

The hard disk drive 1 writes / reads content data corresponding to content such as broadcast programs to / from the hard disk.
The media drive 2 writes / reads content data corresponding to content such as a broadcast program to / from an optical disc medium. Here, examples of the optical disc medium include media that comply with the DVD standard or the Blu-ray (registered trademark) standard.

  The data processor 3 executes various processes according to the computer program stored in the memory 4. The data processor 3 may use the memory 4 as a work area necessary for executing the computer program.

For example, the data processor 3 can supply data supplied from the formatter 8 described later to the hard disk drive 1 or the media drive 2 and store the data on the hard disk or optical disk medium. Further, the data processor 3 supplies, for example, data stored in the hard disk drive 1 or data read from the optical disk medium by the media drive 2 to the decoder 9 described later.
The memory 4 includes a ROM (Read Only Memory) that stores a computer program in a nonvolatile manner and a RAM (Random Access Memory) that temporarily stores various data.

  The AV input unit 5 performs an input interface operation of a digital video signal and an audio signal, and supplies a digital video signal and an audio signal input from an external connection device to the encoder 7, for example.

  The TV tuner 6 tunes (tunes) a digital broadcast signal stream supplied from an external antenna (not shown) and supplies the tuned digital broadcast signal stream to the encoder 7. Here, it is assumed that the TV tuner 6 includes a plurality of tuning systems (tuning circuits) (not shown) that share an antenna so that broadcasting of a plurality of channels can be simultaneously tuned.

The digital broadcast signal stream includes a video signal, an audio signal, a caption signal, an EPG (Electronic Program Guide) signal, and the like. The caption signal included in the digital broadcast signal stream is a signal corresponding to so-called closed caption, which can be switched on / off of display on video.
The EPG signal corresponds to electronic program information. The electronic program information includes a program ID unique to each program, a program title, a program broadcast date and time, a program broadcast station, a program overview, and a program description. It includes data representing genre, program performers, program symbols, and the like. Here, the program symbol represents an attribute of a program such as a new program, the last episode, a live broadcast, a rebroadcast, or a caption broadcast.

The encoder 7 converts, for example, a video signal input from the AV input unit 5 and the TV tuner 6 into a digital video signal compressed in accordance with a standard such as MPEG1 (Moving Picture Experts Group 1) or MPEG2 (Moving Picture Experts Group 2). And supplied to the formatter 8.
Also, the encoder 7 converts, for example, an audio signal input from the AV input unit 5 and the TV tuner 6 into a digital audio signal compressed in accordance with a standard such as MPEG or AC-3 (Audio Compression-3), and the formatter 8 is supplied.

The encoder 7 supplies the data processor 3 with a caption signal and an EPG signal included in the digital broadcast signal stream input from the TV tuner 6.
The encoder 7 may supply the video signal and the audio signal directly to the formatter 8 when the compressed digital video signal and the audio signal are input. The encoder 7 can also directly supply a digital video signal and an audio signal to a video (V) mixer 10 and a selector 11, which will be described later.

  The formatter 8 generates a PES (Packetized Elementary Stream) for the digital video signal, audio signal, and caption signal supplied from the encoder 7. Further, the formatter 8 aggregates the generated PESs of the signals and converts them into a predetermined VR (Video-Recording) standard format. The formatter 8 supplies the data generated by this conversion to the data processor 3.

  The decoder 9 extracts PESs related to video, audio, and subtitles from the data supplied from the data processor 3, and decodes the extracted PESs into video signals, audio signals, and subtitle signals, respectively. The decoder 9 outputs the decoded video signal and subtitle signal to the V mixer 10, and outputs the decoded audio signal to the selector 11.

  The V mixer 10 synthesizes a text signal such as a caption signal with the video signal supplied from the decoder 9 or the like. The V mixer 10 synthesizes the video signal supplied from the decoder 9 or the like with a screen video signal by OSD (On Screen Display) control. The V mixer 10 outputs the combined video signal to the D / A converter 12.

  The selector 11 selects a signal to be output as sound from the audio signal input from the decoder 9 or the audio signal input directly from the encoder 7, and outputs the selected signal to the D / A converter 13 described later.

  The D / A converter 12 converts the digital video signal input from the V mixer 10 into an analog signal and outputs it to a display 14 such as a television apparatus. The display 14 displays an image based on the input video signal.

  The D / A converter 13 converts the digital audio signal input from the selector 11 into an analog signal and outputs the analog signal to the speaker 15. The speaker 15 outputs sound corresponding to the input audio signal.

  The signal receiving unit 16 receives an operation signal wirelessly transmitted from a remote control device 19 described later, and outputs the control signal to a microcomputer 18 described later.

The key input unit 17 includes a plurality of keys for inputting various instructions related to program recording and playback. The key input unit 17 outputs a signal corresponding to the operated key to the microcomputer 18 described later.
The microcomputer 18 includes a ROM in which a computer program or the like is written, an MPU (Micro-Processing Unit) that executes the computer program written in the ROM, and a RAM that provides a work area necessary for executing the computer program. . The microcomputer 18 includes a hard disk drive 1, a media drive 2, a data processor 3, an encoder 7, a formatter 8, a decoder 9, a signal input from the key input unit 17 and a control signal output from the signal receiving unit 16. The V mixer 10 and the selector 11 are controlled.
The remote control device 19 includes various buttons related to program recording and playback, and wirelessly transmits a signal corresponding to the button operated by the user to the signal receiving unit 16.

  Next, prior to describing the operation of the video information recording / reproducing apparatus X of the embodiment, the functional configuration of the video information recording / reproducing apparatus X will be described.

  The video information recording / reproducing apparatus X has an automatic recording function for automatically recording all programs broadcast in a channel and time zone designated in advance by the user. Here, it is possible to perform recording continuously (for example, for 24 hours or more) within the recording capacity range specified in advance in the hard disk drive 1 without specifying the time zone. In this case, when the recording capacity specified in the hard disk drive 1 is exceeded, the program recording area of the hard disk drive 1 is used like a ring buffer, and the latest overwrite recording is performed in the oldest recording area. Thus, the latest program can be recorded continuously for a predetermined time from the current time.

  Furthermore, the video information recording / reproducing apparatus X has a scene search function that presents a keyword extracted in advance on the display 14 and searches a recorded program for a scene corresponding to the keyword selected by the user from the presented keywords. .

FIG. 2 is a block diagram showing a functional configuration related to the automatic recording function and the scene search function.
The functional configuration of the video information recording / reproducing apparatus X includes a content processing unit 100, a caption processing unit 101, an EPG processing unit 102, a broadcast wave processing unit 103, a content reproduction unit 104, a keyword extraction processing unit 105, Keyword list processing unit 106, scene list processing unit 107, OSD control unit 108, content DB (Data Base) 110, subtitle DB 111, subtitle keyword DB 112, EPG DB 113, EPG keyword DB 114, and keyword selection history DB 115, user recording DB 116, and keyword DB 117 are provided.

The content processing unit 100, the caption processing unit 101, the EPG processing unit 102, the broadcast wave processing unit 103, the content reproduction unit 104, the keyword extraction processing unit 105, the keyword list processing unit 106, the scene list processing unit 107, and the OSD control unit 108 For example, the control element such as the data processor 3 or the microcomputer 18 executes a computer program and cooperates with a hardware module provided in the video information recording / reproducing apparatus X.
The content DB 110, subtitle DB 111, subtitle keyword DB 112, EPG DB 113, EPG keyword DB 114, keyword selection history DB 115, user recording DB 116, and keyword DB 117 are stored in the hard disk drive 1.

  The content processing unit 100 stores, in the content DB 110, content data corresponding to a video signal and an audio signal included in a digital broadcast signal stream of a channel designated in advance by the user, for example, in a time zone designated in advance by the user. Here, the content data is, for example, data converted in the format of the VR standard described above in the formatter 8.

  The caption processing unit 101 stores, in the caption DB 111, caption data corresponding to a caption signal included in a digital broadcast signal stream of a channel previously designated by the user, for example, in a time zone designated by the user in advance. The caption data is, for example, data converted into the above-mentioned VR standard format in the formatter 8, and includes a program ID of a program that is a display target of captions, character string information that represents a caption character string, and a caption display time. Display time information. The display time information includes a subtitle display start time and a display end time. The display start time and the display end time can be expressed by using, for example, notation such as Coordinated Universal Time (UTC) or Japan Standard Time (JST), or the elapsed playback time from the beginning of the program.

  Also, the caption processing unit 101 extracts a caption keyword from the caption character string included in the caption data stored in the caption DB 111, associates the extracted caption keyword with the caption data, and stores it in the caption keyword DB 112.

  The EPG processing unit 102 is included in the digital broadcast signal stream of the channel corresponding to the manual recording data based on the manual recording data which is the information of the program manually recorded by the user recorded in the user recording DB 116. EPG data corresponding to the EPG signal is stored in the EPG DB 113. EPG data represents the electronic program information described above.

  Further, the EPG processing unit 102 extracts an EPG keyword that is a keyword used for a scene search from a character string represented by EPG data corresponding to a program that is manually recorded by the user and stored in the EPG DB 113, and the extracted EPG keyword and The EPG data is stored in the EPG keyword DB 114 in association with the EPG data.

  The broadcast wave processing unit 103 captures a video signal and an audio signal from a digital broadcast signal stream corresponding to a channel selected by the user by operating the remote control device 19 and displays a video corresponding to the captured video signal on the display 14. Let The broadcast wave processing unit 103 causes the speaker 15 to output a sound corresponding to the captured audio signal while displaying the video on the display 14. In addition, when the user turns on caption display by operating the remote control device 19 or the like, the broadcast wave processing unit 103 causes the display 14 to display captions according to the caption signal included in the digital broadcast signal stream.

  The content reproduction unit 104 reproduces content data stored in the content DB 110, that is, a recorded program. More specifically, the content reproduction unit 104 causes the display 14 to display a video corresponding to the content data stored in the content DB 110 and causes the speaker 15 to output sound corresponding to the content data. When the subtitle display is instructed, the content reproduction unit 104 causes the display 14 to display the subtitle corresponding to the subtitle data stored in the subtitle DB 111 in synchronization with the reproduction of the content data stored in the content DB 110. .

  The keyword extraction processing unit 105 extracts a predetermined number of search keywords to be displayed on the keyword list 150 to be displayed on the display 14 in a scene search process to be described in detail later with reference to the caption keyword DB 112, the EPG keyword DB 114, and the keyword selection history DB 115. And stored in the keyword DB 117. Here, as the predetermined number, for example, when the number of search keywords to be displayed once on the screen of the display 14 is four, four (four) × 4 (four screens) are displayed. Times) = 16.

  Further, the keyword extraction processing unit 105 determines the display priority of the search keywords stored in the keyword DB 117 according to a predetermined processing procedure, and notifies the keyword list processing unit 106 of the search keywords having a high display priority.

  In addition, when the user selects a search keyword to be searched for a scene from the keyword list 150 displayed on the display 14 in the scene search process, the keyword extraction processing unit 105 selects a keyword selection history based on the selected search keyword. The DB 115 is updated.

Here, an example of setting the display priority will be described.
As a basic idea of display priority, keywords selected by the user in the past are preferentially handled as being in line with user preference.

Also, during viewing of a broadcast program or playback of a recorded program, the keyword of the scene of the program is preferentially handled because it is considered a keyword related to the topic of the scene that the user is currently viewing.
For example, the display priorities are set as the following (1) to (6) from the first to the sixth.

(1) No. 1 in display priority level When viewing a program being broadcast or playing a recorded program, the time at the time of viewing (corresponding to the first time) or the time corresponding to the playback position on the playback time axis A keyword extracted from caption data in a predetermined time zone corresponding to a certain reference time, and matches a keyword included in the keyword selection history DB

Here, as the predetermined time zone corresponding to the reference time, for example, the following (A) to (C) can be considered.
(A) During playback of a recorded program, time zones before and after the reference time including the reference time (for example, from the time 3 minutes before the reference time to the time 3 minutes later)
(B) Time zone before the reference time including the reference time (for example, from 3 minutes before the reference time to the reference time)
(C) Time zone before the reference time (for example, from the time 3 minutes before the reference time to the time 1 minute before the reference time)

(2) Display priority 2nd Keyword extracted from EPG information of a program being watched or recorded, which matches the keyword included in the keyword selection history DB

(3) Display priority 3rd During viewing of a broadcast program or playback of a recorded program, a predetermined time corresponding to a reference time which is a time corresponding to the time of viewing or the playback position on the playback time axis Keywords extracted from subtitle data in the time zone of (1) Keyword that matches the keyword included in the EPG DB (4) Display priority No. 4 Extracted from EPG information of a program being watched or recorded Keyword that matches the keyword included in the EPG DB (5) Display priority 5th During viewing of a broadcast program or playback of a recorded program, the viewing time or playback time axis Keywords extracted from caption data in a predetermined time zone corresponding to a reference time, which is a time corresponding to the playback position of ), Keywords other than those corresponding to (3) (6) display priority No. 6 A keyword extracted from EPG information of a program being viewed or recorded while being broadcast, and the above (2), (4 Keywords other than those that fall under ()) As a result, it is possible to set a higher display priority for keywords that reflect user preferences. As a result, it is possible to present a keyword that more accurately reflects the user's preference.

  The keyword list processing unit 106 performs a search that is displayed once on the screen of the display 14 among the search keywords with high display priority notified by the keyword extraction processing unit 105 (16 search keywords in the above example). A keyword list 150, which is a keyword image in which keywords (four search keywords in the above example) are arranged to be selectable, is generated.

Here, a display example of the keyword list 150 will be described.
FIG. 3 is an explanatory diagram of a display example of the keyword list.
In this case, 16 search keywords KW1 to KW16 are extracted as search keywords, and notified to the keyword list processing unit 106 from the keyword extraction processing unit 105. Further, it is assumed that the search keyword KW1 has the highest display priority, the display priority is low in the order of the search keyword KW2 →... → the search keyword KW16, and the search keyword KW16 has the lowest display priority. .

  As shown in FIG. 3, a playback screen or a viewing screen is displayed on the display screen of the display 14, and search keywords KW <b> 1 to KW <b> 4 having the highest display priority are displayed as a keyword list 150 in a part of the display screen. .

  As a result, any one of the search keywords can be selected by the remote control device 19. When the display of the next keyword list is instructed by the operation of the remote control device 19, the search keywords KW5 to KW8 having the next highest display priority are displayed as the new keyword list 150.

  When the search keywords KW13 to KW16 are displayed as the keyword list 150, when the display of the next keyword list is instructed, the search keywords KW1 to KW4 having the highest display priority are again displayed as the keyword list 150. Is displayed.

  The scene list processing unit 107 extracts a scene including the keyword selected from the keyword list 150 in the subtitles from the recorded program, and generates image data of a scene image representing the extracted scene in a selectable manner. The scene image in this embodiment is, for example, a scene list 151 in which information related to a scene is arranged according to a predetermined condition.

FIG. 4 is an explanatory diagram of a display example of a scene list.
The scene list 151 can display a plurality of scene areas (= area recognized as one scene), and FIG. 4 shows five scene areas A1 to A5.
Each scene area A1 to A5 includes the title of the recorded program corresponding to the program ID included in the caption keyword record, the broadcast station of the program, and the broadcast date and time of the program. When generating the image data of the scene list 151, the scene list processing unit 107 obtains the title, broadcast station, and broadcast date and time by searching the EPG DB 113 using, for example, the program ID as a key.
More specifically, taking the scene area A1 as an example, the title of the recorded program = “program A”, broadcast station = “terrestrial digital 081”, broadcast date = “10/6 (Sat) PM3: 00-PM4: 54 "is displayed.

  Each scene area A1 to A5 includes thumbnails T1 to T5 representing the corresponding scene. For example, thumbnails T1 to T5 display images of recorded programs in the display time information included in the data constituting the caption keyword DB 112. Here, when generating the thumbnails T1 to T5 of the scene list 151, for example, the scene list processing unit 107 searches for a recorded program from the content DB 110 using the program ID as a key, and starts displaying the display time information in the found recorded program. It is generated by reducing the image corresponding to the time.

  In FIG. 4, only one page of the scene list 151 is shown, but it may be configured by a plurality of pages each including a different scene area. In this case, for example, in response to an instruction to switch pages by operating the remote control device 19, the OSD control unit 108 switches the scene area to be arranged in the scene list 151 to the next page or the previous page.

  The user can select a desired scene area from the scene list 151 by operating the remote control device 19, for example.

  The OSD control unit 108 is a video that is being displayed on the display 14 with the keyword list 150 corresponding to the image data generated by the keyword list processing unit 106 and the scene list 151 corresponding to the image data generated by the scene list processing unit 107. Display above.

Next, the configuration of the caption keyword DB 112, the EPG keyword DB 114, and the keyword selection history DB 115 will be described.
First, the data format of the caption keyword DB 112 will be described.
FIG. 5 is an explanatory diagram of the data format of the caption keyword DB.
The subtitle keyword DB 112 stores program ID data 112A in which a program ID for specifying a broadcast program as content is stored, keyword data 112B in which subtitle keywords are stored, and a display time in which information on the time at which the subtitle keyword is displayed is stored. Information data 112C.

Next, the data format of the EPG keyword DB 114 will be described.
FIG. 6 is an explanatory diagram of the data format of the EPG keyword DB.
The EPG keyword DB 114 includes program ID data 114A in which a program ID for specifying a broadcast program as content is stored, and keyword data 114B in which an EPG keyword is stored.

Next, the data format of the keyword selection history DB 115 will be described.
FIG. 7 is an explanatory diagram of a data format of the keyword selection history DB.
The keyword selection history DB 115 stores keyword data 115A that stores keywords that have been selected even once by the user among the keywords displayed in the keyword list 150, and the number of selections of keywords corresponding to the keyword data. Selection frequency data 115B, and final selection time data 115C in which a final selection time that is a date and time when a keyword corresponding to the keyword data 115A is finally selected is stored.
In the case of the example in FIG. 7, for “keyword 1”, the number of selections is “12”, and the last selection time is “20:00 on December 24”.

Next, the operation of the video information recording / reproducing apparatus X of the embodiment will be described.
Assume that in the initial state, there is already a program for which the user has manually instructed recording, and EPG data corresponding to the program can be acquired.
FIG. 8 is an operation flowchart of the embodiment.
It is determined whether or not the user has pressed a scene search button for instructing a scene search while viewing a broadcast program or playing a recorded program (step S11).
If it is determined in step S11 that the scene search button has not been pressed (step S11; No), the process ends.
If it is determined in step S11 that the scene search button is pressed (step S11; Yes), the keyword extraction processing unit 105 performs extraction processing of a predetermined number of search keywords to be displayed as the keyword list 150 to perform keyword list processing. The unit 106 is notified (step S12).

FIG. 9 is a process flowchart of the keyword extraction process of the keyword extraction processing unit.
First, the keyword extraction processing unit 105 acquires a keyword selected by the user in the past from the keyword selection history DB 115 (step S21).
Next, the keyword extraction processing unit 105 acquires an EPG keyword corresponding to a program for which the user has manually instructed recording from the EPG keyword DB 114 (step S22).

Subsequently, the keyword extraction processing unit 105 acquires the caption keyword of the program being broadcast or the program being recorded and reproduced from the caption keyword DB 112 (step S23).
Then, the keyword extraction processing unit 105 determines the display priority as described above based on all the keywords acquired in steps S21 to S23, and displays the search keywords stored in the keyword DB 117 according to a predetermined processing procedure. The ranking is determined, search keywords having a high display priority are extracted and notified to the keyword list processing unit 106 (step S24).

The keyword list processing unit 106 generates image data of the keyword list 150 in which the keyword notified by the keyword extraction processing unit 105 is arranged, and instructs the OSD control unit 108 to display the keyword list 150 based on the generated image data. The OSD control unit 108 displays the keyword list 150 based on the image data generated by the keyword list processing unit 106 on the video being displayed on the display 14 (step S13).
Further, the keyword list processing unit 106 determines whether or not a predetermined keyword selection button has been pressed by the user on the remote control device 19 (step S14).
If it is determined in step S14 that the keyword selection button has not been pressed (step S14; No), a standby state is entered.
If it is determined in step S14 that the keyword selection button has been pressed (step S14; Yes), the process proceeds to keyword selection processing (step S15).

FIG. 10 is a process flowchart of the keyword selection process.
First, the keyword extraction processing unit 105 refers to the keyword selection history DB 115 (step S31).
Subsequently, it is determined whether or not the keyword corresponding to the pressed keyword selection button is a keyword already registered in the keyword selection history DB 115 (step S32).
If it is determined in step S32 that the keyword corresponding to the keyword selection button is a keyword already registered in the keyword selection history DB 115 (step S32; Yes), the process proceeds to step S34.
If it is determined in step S32 that the keyword corresponding to the keyword selection button is not a keyword already registered in the keyword selection history DB 115 (step S32; No), the selected keyword is added to the keyword selection history DB 115 and registered. (Step S33).
Subsequently, 1 is added to the selection frequency data of the selected keyword (step S34). Therefore, in the case of the first registration, the selection number data = 1, and in the second and subsequent times, the selection number data = the number of selections up to the previous time + 1.
Then, the keyword list processing unit 106 updates the time corresponding to the last selection time data 115C to the current time (step S35), and notifies the scene list processing unit 107 of the selected keyword.

  In response to receiving the keyword notification, the scene list processing unit 107 extracts a scene including the keyword in the subtitles from the recorded program, and generates image data of the scene list 151 that can select a scene of the recorded program. The OSD control unit 108 is instructed to display the scene list 151 based on the generated image data. In response to receiving this command, the OSD control unit 108 displays the scene list 151 based on the image data generated by the scene list processing unit 107 on the video being displayed on the display 14 (step S16).

With the scene list 151 displayed on the display 14, the scene list processing unit 107 presses the scene selection button for selecting one of the scene areas in the scene list 151 shown in FIG. 4 on the remote control device 19. It is determined whether or not (step S17).
If it is determined in step S17 that no scene selection button has been pressed (step S17; No), a standby state is entered.
If any scene selection button is pressed in the determination in step S17 (step S17; Yes), the scene list processing unit 107 determines the program ID of the recorded program corresponding to the selected scene area, The content playback unit 104 is notified of the scene time information. The time information here is the playback elapsed time from the beginning of the recorded program, and can be, for example, the display start time of the display time information included in the caption keyword record corresponding to the selected scene area A.

Upon receiving the notification of the program ID and time information, the content reproduction unit 104 performs a scene search for searching for the reproduction start position of the recorded program (step S18).
Subsequently, the content reproduction unit 104 reproduces the searched program (step S19).

  More specifically, the content reproduction unit 104 accesses the content DB 110 to sequentially read content data from the above reproduction start position, and causes the display 14 to display a video corresponding to the video signal included in the read content data. Furthermore, the content reproduction unit 104 causes the speaker 15 to output sound corresponding to the audio signal included in the read content data.

As described above, according to the present embodiment, a scene search keyword reflecting the user's preference can be automatically presented, so that the user can perform a complicated keyword input operation using the remote control device. There is no need to do it.
Furthermore, since the user's preference is reflected in the presented keyword, it is possible to select a scene to be reproduced according to his / her preference only by performing a keyword selection operation, and the usability is improved.

  In the above description, the automatically presented keyword that reflects the user's preference is used for the reproduction of the content (program), but the same keyword is used for the content recommendation function or the automatic recording function that reflects the user's preference. It is also possible to use it.

Here, the content recommendation function is a function for searching a user's favorite content (program) or content that is interesting and interesting and recommending it to the user.
The automatic recording function is a function of referring to the EPG information and recording contents (programs) not designated by the user to avoid omission of recording.

FIG. 11 is a process flowchart of preprocessing for realizing the content recommendation function and the automatic recording function.
First, when the content recommendation function and the automatic recording function are enabled, the content processing unit 100 stores the content data of the program of the channel specified by the user in the content DB 110 in the time zone specified by the user. In parallel with this, the processing of FIG. 11 is performed at predetermined timings.

  More specifically, first, the keyword selection history DB 115 is referred to (step S41), and it is determined whether or not there is a selected number of keywords exceeding a predetermined threshold (for example, 10 times) (step S42).

If it is determined in step S42 that there is no keyword having a selected number exceeding the predetermined threshold (step S42; No), the process is terminated, and a normal operation is performed.
If it is determined in step S42 that there is a keyword whose number of selections exceeds a predetermined threshold (step S42; Yes), a keyword (recommendation target content selection keyword) used when selecting the keyword-recommended content for the user. (Step S43).

  Therefore, after the addition of the keyword, when the recommended target content selection keyword is included in the EPG keyword extracted from the EPG information corresponding to the recorded content, the recorded content is presented to the user as the recommended content. It becomes.

  Further, when there are keywords whose selection count exceeds a predetermined threshold, even if the content is other than the conditions (channel, time zone, etc.) specified by the user, the content including the keyword is set as an automatic recording target (step S44).

  Therefore, after setting the automatic recording target, content according to the user's preference is automatically recorded and added to the user recording DB 116, so that the user can view content with high preference. It is possible to avoid recording omissions as much as possible.

  In the present embodiment described above, when viewing content (program), the user can easily search for a program or program scene according to his / her preference by selecting a keyword arranged in the keyword list 150. it can. Furthermore, since the keywords arranged in the keyword list 150 are keywords extracted from the captions or electronic program information of the program that the user is viewing, the user's preference can be reflected.

  In the present embodiment, the keyword list 150 in which keywords to be presented to the user are narrowed down based on the keyword history previously selected as the keyword for the scene search by the user and the keywords related to the program being viewed by the user are arranged. It is possible to present a keyword that more accurately reflects the user's preference.

(Modification)
Several modifications related to the above embodiment will be described.
In the above embodiment, the keyword list is extracted by extracting the first keyword corresponding to a part of the content that the user is currently viewing (= first time) (predetermined time zone corresponding to the reference time; first portion). The second part of the content being viewed by the user during a second time different from the first time (for example, a predetermined time zone corresponding to a reference time such as last week or the previous day; second part) A plurality of second keywords to be presented to the user are extracted from the corresponding plurality of keywords using information corresponding to the content viewed or recorded by the user, and the display 14 displays the plurality of first keywords and the plurality of second keywords. Can be displayed as a keyword list group at the same time.

  In the above embodiment, the video information recording / reproducing apparatus which is an example of the electronic apparatus has been described. However, the configuration relating to the video information recording / reproducing apparatus disclosed in the above embodiment can also be applied to other types of electronic devices capable of viewing content such as personal computers, smartphones, and tablets.

  In the above embodiment, each database (DB) is constructed, display priority is calculated, keyword extraction processing, and the like are performed by the electronic device alone. However, it is connected to the electronic device via a network so that communication is possible. It is also possible to configure so that a heavy load is performed by a server (including a cloud server).

  In the above embodiment, viewing and recording of digitally broadcasted programs are targeted for processing. However, the target of processing by the video information recording / reproducing apparatus may include other types of content such as analog broadcast programs, moving images recorded on optical disc media, or moving images downloaded via a network.

  In the above embodiment, the processing for closed captions has been described as an example of captions used for keyword extraction and scene search. However, subtitles used for keyword extraction and scene search may include so-called open captions integrated with video. In this case, the video information recording / reproducing apparatus may be provided with a function for performing character recognition from open captions, and the same processing may be performed thereafter.

  In the above embodiment, the video information recording / reproducing apparatus has a configuration including both the hard disk drive 1 and the media drive 2, but may include only one of the hard disk drive 1 and the media drive 2, In addition to or instead of these, a storage medium made of a semiconductor memory may be provided.

  In the above embodiment, the case where the signals input from the AV input unit 5 and the TV tuner 6 are digital has been illustrated, but each signal may be analog. If each signal is analog, an A / D converter for converting the signal into a digital signal may be provided in the encoder 7 or the like.

  In the above embodiment, the content DB 110, the caption DB 111, the caption keyword DB 112, the EPG DB 113, the EPG keyword DB 114, and the keyword selection history DB 115 are stored in the hard disk drive 1, but the media drive 2 can write and read data. You may make it memorize | store in an optical disk medium. In addition, the content DB 110, the caption DB 111, the caption keyword DB 112, the EPG DB 113, the EPG keyword DB 114, and the keyword selection history DB 115 may be configured by a dedicated processor and a hardware module.

  A computer such as a video information recording / reproducing apparatus is connected to a content processing unit 100, a caption processing unit 101, an EPG processing unit 102, a broadcast wave processing unit 103, a content reproduction unit 104, a keyword list processing unit 106, a scene list processing unit 107, and The computer program for functioning as the OSD control unit 108 or the like may be transferred in a state where it is preinstalled in the computer, or may be transferred in a state where it is recorded on a computer-readable recording medium. The computer program may be downloaded to the computer via a network.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Hard disk drive 2 Media drive 3 Data processor 4 Memory 5 AV input part 6 TV tuner 7 Encoder 8 Formatter 9 Decoder 10 V mixer 11 Selector 12 D / A converter 13 D / A converter 14 Display 15 Speaker 16 Signal receiving part 17 Key input Unit 18 Microcomputer 19 Remote control device 100 Content processing unit 101 Subtitle processing unit 102 EPG processing unit 103 Broadcast wave processing unit 104 Content playback unit 105 Keyword extraction processing unit (extraction unit)
106 Keyword list processing unit (processing unit)
107 Scene list processing unit (processing unit)
108 OSD control unit 110 Content DB
111 Subtitle DB
112 Subtitle Keyword DB
114 EPG keyword DB
115 Keyword selection history DB
116 User recording DB
117 Keyword DB
150 Keyword List 151 Scene List KW1 to KW4 Search Keyword (Selection Target Keyword)
X video information recording and playback device

Claims (16)

Extraction that extracts a plurality of first keywords to be presented to the user from a plurality of keywords corresponding to the first part of the content that the user is viewing at the first time, using information corresponding to the content that the user has viewed or recorded. And
A presentation unit for selectively presenting the plurality of first keywords to the user;
A processing unit that performs processing for searching for information related to the selected first keyword using the first keyword selected by the user;
With electronic equipment. The extraction unit extracts the plurality of first keywords based on information corresponding to a recording reservation or recorded content by a user's manual operation.
The electronic device according to claim 1. The plurality of keywords corresponding to the part of the content being viewed by the user are keywords extracted from subtitle information included in the part of the content.
The electronic device according to claim 1 or 2. The processing unit performs a process for searching for a scene related to the selected first keyword from a plurality of contents each including a plurality of scenes using the selected first keyword.
The electronic device according to claim 1. The extraction unit uses a plurality of keywords corresponding to the second part of the content being viewed at a second time different from the first time by using information corresponding to the content viewed or recorded by the user. Extracting a plurality of second keywords to be presented to
The presenting unit displays the plurality of first keywords and the plurality of second keywords simultaneously.
The electronic device according to claim 1. The presenting unit includes a display for displaying various information,
A display control unit for displaying a plurality of the selection target keywords on the display screen of the display;
The electronic device according to claim 1, further comprising: Extraction that extracts a plurality of first keywords to be presented to the user from a plurality of keywords corresponding to the first part of the content that the user is viewing at the first time, using information corresponding to the content that the user has viewed or recorded. Process,
A presentation process for selectively presenting the plurality of first keywords to the user;
A process of performing processing for searching for information related to the selected first keyword using the first keyword selected by the user;
A method for controlling an electronic device comprising: In the extraction process, the plurality of first keywords are extracted based on information corresponding to a recording reservation or recorded content by a user's manual operation.
The method for controlling an electronic device according to claim 7. The plurality of keywords corresponding to the part of the content being viewed by the user are keywords extracted from subtitle information included in the part of the content.
The method for controlling an electronic device according to claim 7 or 8. In the process, using the selected first keyword, a process for searching for a scene related to the selected first keyword from a plurality of contents each including a plurality of scenes is performed.
The method for controlling an electronic device according to claim 7. In the extraction process, the user uses information corresponding to the content viewed or recorded by the user from a plurality of keywords corresponding to the second portion of the content being viewed at a second time different from the first time. Extracting a plurality of second keywords to be presented to
In the presenting process, the plurality of first keywords and the plurality of second keywords are simultaneously displayed.
The method for controlling an electronic device according to claim 7. A control program for controlling an electronic device by a computer,
The computer,
Means for extracting a plurality of first keywords to be presented to the user from a plurality of keywords corresponding to the first portion of the content being viewed by the user at the first time, using information corresponding to the content viewed or recorded by the user When,
Means for selectively presenting the plurality of first keywords to the user;
Means for performing a process for searching for information related to the selected first keyword using the first keyword selected by the user;
Control program to function. The means for extracting the first keyword extracts the plurality of first keywords based on information corresponding to a recording reservation or recorded content by a user's manual operation.
The control program according to claim 12. The plurality of keywords corresponding to the part of the content being viewed by the user are keywords extracted from subtitle information included in the part of the content.
The control program according to claim 12 or claim 13. The means for performing the process performs a process for searching for a scene related to the selected first keyword from a plurality of contents each including a plurality of scenes using the selected first keyword.
The control program according to any one of claims 12 to 14. The extraction unit uses a plurality of keywords corresponding to the second part of the content being viewed at a second time different from the first time by using information corresponding to the content viewed or recorded by the user. Extracting a plurality of second keywords to be presented to
The presenting unit displays the plurality of first keywords and the plurality of second keywords simultaneously.
The control program according to any one of claims 12 to 15.

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