WO2018229846A1 - Dispositif de lecture audio /vidéo et procédé de lecture audio /vidéo - Google Patents

Dispositif de lecture audio /vidéo et procédé de lecture audio /vidéo Download PDF

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Publication number
WO2018229846A1
WO2018229846A1 PCT/JP2017/021727 JP2017021727W WO2018229846A1 WO 2018229846 A1 WO2018229846 A1 WO 2018229846A1 JP 2017021727 W JP2017021727 W JP 2017021727W WO 2018229846 A1 WO2018229846 A1 WO 2018229846A1
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WO
WIPO (PCT)
Prior art keywords
video
audio
file
audio file
unit
Prior art date
Application number
PCT/JP2017/021727
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English (en)
Japanese (ja)
Inventor
隆一 大前
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/021727 priority Critical patent/WO2018229846A1/fr
Publication of WO2018229846A1 publication Critical patent/WO2018229846A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof

Definitions

  • the present invention relates to a video / audio reproduction device capable of reproducing an audio file and a video file.
  • Patent Document 1 discloses a recording / reproducing apparatus that allows a CD to be enjoyed like a video clip by displaying a video related to the song when reproducing the song recorded on a CD (Compact Disc). Has been proposed.
  • the recording / reproducing apparatus of Patent Document 1 automatically records video data of a digital broadcast program related to each song on the recording apparatus based on the information (music title, artist name) of the music recorded on the CD, and instructs to reproduce the CD. If there is, the video data related to the music recorded on the CD is reproduced at the same time as the CD is reproduced. Since video data has a large data size, the recording / reproducing apparatus of Patent Document 1 requires a large-capacity recording apparatus. The recording / reproducing apparatus of Patent Document 1 acquires video data from digital broadcasting, but a program related to a recorded song on a CD is not always conveniently broadcast. Note that the recording / reproducing apparatus disclosed in Patent Document 1 is to display video on a display device while outputting audio of a CD from a speaker, and is mainly intended to reproduce a CD.
  • the present invention has been made to solve the above-described problems, and provides a video / audio reproduction device capable of automatically reproducing a video file corresponding to an audio file without requiring a large-capacity recording device. With the goal.
  • the video / audio reproduction device is included in a reproduction unit capable of reproducing an audio file and a video file, a playlist storage unit that stores a playlist in which the audio file is registered, and an audio file registered in the playlist.
  • a keyword extraction unit that extracts a keyword related to the audio file based on the data to be detected, a search unit that searches for a video file corresponding to the audio file based on the keyword extracted by the keyword extraction unit, and a detection unit
  • a video link information storage unit that stores video link information indicating the location of the video file corresponding to the audio file in association with the audio file, and a control unit that controls the operation of the playback unit.
  • the video / audio reproduction device when receiving an instruction to reproduce an audio file, reproduces the video file corresponding to the audio file instead of the audio file. Therefore, a highly decorative image is displayed on the display device, and the user can enjoy music visually. Further, since the video / audio reproduction device stores the video link information indicating the location of the video data, the video data itself does not necessarily have to be stored, and a large-capacity recording device is not required.
  • FIG. 1 is a diagram showing a configuration of a video / audio reproduction system according to an embodiment of the present invention.
  • the video / audio reproduction system includes a video / audio reproduction device 10 and an audio file storage device 21, a video file storage device 22, an operation input device 23, a display device 24, an audio output device 25, and a communication device connected thereto.
  • Device 26 is a diagram showing a configuration of a video / audio reproduction system according to an embodiment of the present invention.
  • the video / audio reproduction system includes a video / audio reproduction device 10 and an audio file storage device 21, a video file storage device 22, an operation input device 23, a display device 24, an audio output device 25, and a communication device connected thereto.
  • Device 26 is a diagram showing a configuration of a video / audio reproduction system according to an embodiment of the present invention.
  • the video / audio reproduction system includes a video / audio reproduction device 10 and an audio file storage device 21, a video file storage device 22, an operation input device 23, a display device 24, an audio output device 25, and a
  • the audio file storage device 21 and the video file storage device 22 are storage media locally connected to the video / audio reproduction device 10.
  • the audio file storage device 21 stores an audio file
  • the video file storage device 22 stores a video file. Is memorized.
  • the audio file storage device 21 and the video file storage device 22 are separate blocks, but they may be configured by a single storage device.
  • the audio file storage device 21 and the video file storage device 22 may be any storage media such as a hard disk, a USB (Universal Serial Bus) memory, a memory card, a CD, a DVD (Digital Versatile Disc), and a Blu-ray (registered trademark) disk. .
  • the operation input device 23 is a device for a user to input an operation to the video / audio reproduction device 10, and may be a hardware such as a push button, a keyboard, a touch pad, a mouse, or a software key displayed on the screen.
  • the display device 24 is a device that displays the video output from the video / audio reproduction device 10, and is configured by a liquid crystal display device, for example.
  • the operation input device 23 and the display device 24 may be configured as one touch panel by displaying a software key as the operation input device 23 on the screen of the display device 24.
  • the audio output device 25 is a speaker for outputting audio output from the video / audio reproduction device 10.
  • the communication device 26 is a device for the video / audio reproduction device 10 to communicate with the outside.
  • the communication device 26 may not be a communication device dedicated to the video / audio reproduction device 10, and may be a general-purpose communication device such as a mobile phone or a smartphone.
  • the video / audio reproduction device 10 can access the Internet 27 using the communication device 26.
  • OTT server 28 hereinafter referred to as “OTT server 28” of an OTT (Over The Top) service that distributes audio files and video files.
  • the video / audio reproduction device 10 is configured to operate the audio file stored in the audio file storage device 21, the video file stored in the video file storage device 22, or the OTT server 28 in accordance with a user operation input to the operation input device 23. Can play audio files, video files, and so on.
  • the audio file and the type of the video file handled by the video / audio reproduction device 10 are not limited.
  • the audio file is assumed to be a music file, and not only the audio data of the song but also the song title and album name are included in the audio file. It is assumed that information such as an artist name and a cover art image is included as metadata.
  • the video file includes not only video data and audio data but also information on at least a content name (video title).
  • the video / audio reproduction device 10 includes a reproduction unit 11, a control unit 12, a playlist storage unit 13, a keyword extraction unit 14, a search unit 15, and a video link information storage unit 16.
  • the playback unit 11 performs playback processing of audio files and video files. For example, when reproducing an audio file, the reproducing unit 11 causes the audio output device 25 to output audio corresponding to the audio data included in the audio file, and displays the content of the metadata included in the audio file on the display device 24. Let When playing back a video file, the playback unit 11 causes the display device 24 to display a video corresponding to the video data included in the video file, and outputs a sound corresponding to the audio data included in the video file to the audio output device. 25.
  • the control unit 12 controls the operation of the reproduction unit 11 based on the user operation input to the operation input device 23. Further, the control unit 12 has a function of creating a playlist capable of registering a plurality of audio files stored in the audio file storage device 21. In the playlist, the contents of the metadata included in each audio file, that is, information such as the song title, album name, artist name, etc. are also registered.
  • the playlist can be created by any method. For example, even when the audio file storage device 21 is connected to the video / audio reproduction device 10, the control unit 12 automatically creates a playlist in which all the audio files in the audio file storage device 21 are registered. Good. Further, the user may select an audio file to be registered in the playlist, or the user may edit an existing playlist.
  • the playlist created by the control unit 12 is stored in the playlist storage unit 13.
  • the control unit 12 can display the playlist stored in the playlist storage unit 13 on the display device 24, and the user can use the operation input device 23 to display the playlist displayed on the display device 24.
  • a desired audio file can be selected from among them, and the video / audio reproduction device 10 can be instructed to reproduce the selected audio file.
  • the keyword extraction unit 14 extracts keywords related to each audio file based on information (metadata contents) of each audio file registered in the playlist stored in the playlist storage unit 13. Specifically, the title, album name, artist name, etc. of the song of the audio file are extracted as keywords.
  • the search unit 15 searches for a video file corresponding to the audio file based on the keyword extracted by the keyword extraction unit 14.
  • the “video file corresponding to the audio file” is intended to express the content of the audio file with video, such as a promotion video of a song of the audio file.
  • the place where the search unit 15 searches for a video file may be the video file storage device 22 locally connected to the video / audio reproduction device 10 or the OTT server 28 on the Internet 27.
  • the search of the video file distributed by the OTT server 28 may use a search engine provided in the OTT server 28 or may use another search server (not shown).
  • the video link information storage unit 16 stores video link information indicating the location of the video file detected by the search unit 15, that is, the video file corresponding to the audio file, in association with the audio file.
  • the video link information is a path indicating the location of the video file in the video file storage device 22 or a URL (Uniform Resource Locator) indicating the location of the video file in the OTT server 28.
  • control unit 12 controls the operation of the reproduction unit 11 based on a user operation. Basically, the control unit 12 causes the playback unit 11 to play back an audio file or video file instructed to be played back by the user. However, when receiving an instruction to reproduce an audio file associated with the video link information, the playback unit 11 selects the video file indicated by the video link information associated with the audio file instead of the audio file. Play the playback unit.
  • the user reproduces the audio file to which the video link information is not linked.
  • the screen of the display device 24 shifts to the playback screen of the audio file.
  • the display on the display device 24 is a reproduction screen of the video file indicated by the video link information associated with the audio file. Will be transferred to.
  • FIG. 3 is a flowchart showing a process (video link information creation process) in which the video / audio reproduction device 10 creates video link information.
  • the operation when the video / audio reproduction device 10 creates video link information will be described below with reference to FIG.
  • the video link information creation process is executed when the control unit 12 creates or updates a playlist.
  • the execution timing of the video link information creation process may be any timing as long as the playlist is created.
  • the keyword extraction unit 14 selects one of the audio files registered in the playlist. Is selected (step S102). Then, the keyword extraction unit 14 extracts keywords related to the audio file, such as a song title, album name, artist name, and the like from the playlist (step S103).
  • the search unit 15 searches for a video file corresponding to the audio file using the keyword extracted by the keyword extraction unit 14 (step S104).
  • the place where the search unit 15 searches the video file may be the video file storage device 22 locally connected to the video / audio reproduction device 10 or the OTT server 28 on the Internet 27.
  • the search unit 15 determines the reliability of each candidate based on the content name of each video file, the number of times of playback, the provider (such as the OTT service domain), the playback time length, and whether or not there is a commercial inserted during playback. From the viewpoint of high quality (image quality, sound quality, etc.), video file candidates corresponding to the audio file are narrowed down to select an optimal video file.
  • the “number of times of reproduction” may be the total number of times of reproduction by an unspecified person regardless of the subject of reproduction, or may be the number of times of reproduction by the video / audio reproduction device 10.
  • the search unit 15 determines that a video file containing “HD” at the beginning of the content name has high image quality, a video file with a large number of playbacks, or a video provided by a major OTT service. It may be determined that a file or a video file whose playback time length is close to the playback time length of the audio file is highly reliable. Also, the user may be able to set whether or not to lower the priority of a commercial inserted during playback.
  • step S105 If a video file corresponding to the audio file is detected as a result of the search by the search unit 15 (YES in step S105), the video link information storage unit 16 displays the video link information indicating the location of the video file as the audio file. The file is stored in association with the file (step S106). If no video file corresponding to the audio file is detected (NO in step S105), step S106 is skipped.
  • a plurality of suitable video files corresponding to the audio file are detected by the search unit 15, when any of the video files is deleted (so-called “broken link” occurs)
  • a plurality of pieces of video link information may be associated with the audio file.
  • priority may be given to each piece of video link information.
  • the search unit 15 may store the narrowing-down conditions when narrowing down candidates for video files corresponding to audio files.
  • the video link information needs to be updated due to a broken link, and when the video file corresponding to the same audio file is searched again, the search unit 15 adds past keywords in addition to the keywords extracted by the keyword extraction unit 14.
  • Video files can be searched based on the filtering conditions. Thereby, the search unit 15 can efficiently narrow down candidate video files.
  • step S107 The above steps S102 to S106 are repeatedly executed for all audio files registered in the playlist until the search for the corresponding video file is completed (step S107). That is, the keyword extraction unit 14 automatically extracts keywords from all audio files registered in the playlist, and the search unit 15 corresponds to all audio files registered in the playlist. A video file search is automatically performed, and the video link information storage unit 16 automatically stores video link information for all audio files in which the corresponding video file is detected.
  • FIG. 4 is a flowchart showing processing (video / audio reproduction processing) in which the video / audio reproduction device 10 reproduces the video file and the audio file.
  • the operation of the video / audio reproduction device 10 described with reference to FIG. 2 is realized by the video / audio reproduction processing of FIG.
  • the operation when the video / audio reproduction device 10 reproduces the video file and the audio file will be described with reference to FIG.
  • the video / audio reproduction device 10 has previously executed the video link information creation processing of FIG.
  • the control unit 12 When the video / audio reproduction processing is started by the user's operation on the video / audio reproduction device 10, first, the control unit 12 reads the playlist from the playlist storage unit 13 and causes the display device 24 to display the playlist (step). S201). And the control part 12 selects the audio
  • control unit 12 refers to the video link information storage unit 16 and confirms whether there is video link information associated with the selected audio file (step S203).
  • Step S204 the control unit 12 controls the playback unit 11 to display a video corresponding to the video data included in the video file on the display device 24 and to output a sound corresponding to the audio data included in the video file. Output from the output device 25.
  • control unit 12 causes the reproduction unit 11 to reproduce the audio file (step S205). That is, the control unit 12 controls the playback unit 11 to output sound corresponding to the sound data included in the sound file from the sound output device 25 and display the content of the metadata included in the sound file as a display device. 24.
  • steps S202 to S204 of FIG. 4 are repeatedly executed.
  • the user when an instruction to reproduce an audio file associated with video link information is received, the corresponding video file is always reproduced. It is also possible that the user wants to play the audio file, such as when it does not fit. Therefore, the user may be able to set whether to play an audio file or a video file corresponding to it. That is, the user may be allowed to switch whether or not to permit the determination of YES in step S203 of FIG.
  • the setting may be performed for each audio file. That is, the user may be allowed to select an audio file that is permitted to be determined as YES in step S203 of FIG.
  • the video / audio reproduction device 10 when receiving the audio file reproduction instruction, reproduces the video file corresponding to the audio file instead of the audio file. Therefore, a highly decorative image such as a promotion video is displayed on the display device 24, and the user can enjoy music visually.
  • the video link information storage unit 16 does not store the video data itself, but stores video link information indicating the location of the video data, so that a large-capacity recording device is not required.
  • the video / audio reproduction device 10 of the present embodiment also has an advantage that the labor can be omitted.
  • FIG. 5 and FIG. 6 are diagrams each showing an example of the hardware configuration of the video / audio reproduction device 10.
  • Each element (the playback unit 11, the control unit 12, the playlist storage unit 13, the keyword extraction unit 14, the search unit 15, and the video link information storage unit 16) of the video / audio playback device 10 illustrated in FIG.
  • a keyword extraction unit 14 for extracting keywords related to the video, a search unit 15 for searching for a video file corresponding to the audio file based on the keywords extracted by the keyword extraction unit 14, and an audio file detected by the search unit 15
  • the video link information storage unit 16 that stores the video link information indicating the location of the video file corresponding to the video file is associated with the audio file and the reproduction instruction of the audio file that is associated with the video link information is received, Instead of the video file indicated by the video link information associated with the audio file.
  • It comprises a control unit 12 to be reproduced to the reproduction unit 11.
  • Dedicated hardware may be applied to the processing circuit 50, or a processor (Central Processing Unit (CPU), processing device, arithmetic device, microprocessor, micro processor that executes a program stored in the memory.
  • a computer or DSP Digital Signal Processor
  • the processing circuit 50 includes, for example, a single circuit, a composite circuit, a programmed processor, a processor programmed in parallel, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable). Gate Array) or a combination of these.
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • Each of the functions of each element of the video / audio reproduction device 10 may be realized by a plurality of processing circuits, or these functions may be realized by a single processing circuit.
  • FIG. 6 shows a hardware configuration of the video / audio reproduction device 10 when the processing circuit 50 is configured using a processor.
  • the function of each element of the video / audio reproduction device 10 is realized by a combination of software and the like (software, firmware, or software and firmware).
  • Software or the like is described as a program and stored in the memory 52.
  • the processor 51 as the processing circuit 50 implements the functions of the respective units by reading out and executing the program stored in the memory 52.
  • the video / audio reproduction device 10 when executed by the processing circuit 50, extracts a keyword related to the audio file based on data included in the audio file registered in the playlist, and the extracted keyword , A process for searching for a video file corresponding to the audio file, a process for storing video link information indicating the location of the video file corresponding to the detected audio file in association with the audio file, and a video link
  • a playback instruction for an audio file associated with information is received, a process of playing the video file indicated by the video link information associated with the audio file instead of the audio file is executed as a result.
  • a memory 52 for storing the program. In other words, it can be said that this program causes a computer to execute the operation procedure and method of each element of the video / audio reproduction device 10.
  • the memory 52 is nonvolatile or non-volatile such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), or the like. Volatile semiconductor memory, HDD (Hard Disk Drive), magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD (Digital Versatile Disk) and its drive device, etc., or any storage media used in the future May be.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • flash memory EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), or the like.
  • Volatile semiconductor memory Volatile semiconductor memory, HDD (Hard Disk Drive), magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD (Digital Versatile Disk) and its drive device, etc., or any storage media used in the future May be.
  • the present invention is not limited to this, and a configuration may be employed in which some elements of the video / audio reproduction device 10 are realized by dedicated hardware and another part is realized by software or the like.
  • the functions of some elements are realized by the processing circuit 50 as dedicated hardware, and the processing circuit 50 as the processor 51 reads a program stored in the memory 52 for the other some elements.
  • the function can be realized by executing.
  • the video / audio reproduction device 10 can realize the functions described above by hardware, software, or the like, or a combination thereof.
  • the audio file storage device 21, the video file storage device 22, the operation input device 23, the display device 24, the audio output device 25, and the communication device 26 are externally connected to the video / audio reproduction device 10. However, some or all of them may be integrated with the video / audio reproduction device 10. For example, when the video / audio reproduction system of FIG. 1 is applied to a portable device such as a mobile phone or a smartphone, all of them are housed in one casing.
  • the keyword extraction unit 14 and the search unit 15 may be constructed in a server 30 on the Internet 27. That is, when the video / audio reproduction device 10 transmits the playlist stored in the playlist storage unit 13 to the server 30, the keyword extraction unit 14 detects the keyword and the search unit 15 searches the video file on the server 30. The video link information indicating the location of the video file corresponding to each audio file registered in the playlist may be sent back to the video / audio reproduction device 10.

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

La présente invention concerne une unité d'extraction de mot-clé (14) qui extrait, sur la base de données incluses dans un fichier audio enregistré dans une liste de lecture qui est stockée dans une unité de stockage de liste de lecture (13), un mot-clé associé au fichier audio. Une unité de récupération (15) récupère, sur la base du mot-clé, un fichier vidéo correspondant au fichier audio. Une unité de stockage d'informations de liaison vidéo (16) stocke des informations de liaison vidéo en association avec le fichier audio, les informations de liaison vidéo indiquant l'emplacement du fichier vidéo qui correspond au fichier audio et qui a été détectée par l'unité de récupération (15). Lors de la réception d'une instruction pour lire le fichier audio associé aux informations de liaison vidéo, une unité de commande (12) amène une unité de lecture (11) à lire, à la place du fichier audio, le fichier vidéo indiqué par les informations de liaison vidéo associées au fichier audio.
PCT/JP2017/021727 2017-06-13 2017-06-13 Dispositif de lecture audio /vidéo et procédé de lecture audio /vidéo WO2018229846A1 (fr)

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PCT/JP2017/021727 WO2018229846A1 (fr) 2017-06-13 2017-06-13 Dispositif de lecture audio /vidéo et procédé de lecture audio /vidéo

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PCT/JP2017/021727 WO2018229846A1 (fr) 2017-06-13 2017-06-13 Dispositif de lecture audio /vidéo et procédé de lecture audio /vidéo

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012043258A (ja) * 2010-08-20 2012-03-01 Ricoh Co Ltd 検索システム、検索装置、検索プログラム、記録媒体及び検索方法
JP2013500540A (ja) * 2009-07-27 2013-01-07 ユナイテッド ビデオ プロパティーズ， インコーポレイテッド 属性を共有する異なる種類のメディアコンテンツを関連付け、提供する方法およびシステム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013500540A (ja) * 2009-07-27 2013-01-07 ユナイテッド ビデオ プロパティーズ， インコーポレイテッド 属性を共有する異なる種類のメディアコンテンツを関連付け、提供する方法およびシステム
JP2012043258A (ja) * 2010-08-20 2012-03-01 Ricoh Co Ltd 検索システム、検索装置、検索プログラム、記録媒体及び検索方法

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