WO2015034123A1 - Procédé de gestion de tampon pour la reproduction d'images provenant de plusieurs caméras d'action et appareil de reproduction associé - Google Patents

Procédé de gestion de tampon pour la reproduction d'images provenant de plusieurs caméras d'action et appareil de reproduction associé Download PDF

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Publication number
WO2015034123A1
WO2015034123A1 PCT/KR2013/008291 KR2013008291W WO2015034123A1 WO 2015034123 A1 WO2015034123 A1 WO 2015034123A1 KR 2013008291 W KR2013008291 W KR 2013008291W WO 2015034123 A1 WO2015034123 A1 WO 2015034123A1
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WO
WIPO (PCT)
Prior art keywords
image
images
action cam
screen
buffer memory
Prior art date
Application number
PCT/KR2013/008291
Other languages
English (en)
Korean (ko)
Inventor
이동채
유수근
Original Assignee
주식회사 모브릭
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 주식회사 모브릭 filed Critical 주식회사 모브릭
Publication of WO2015034123A1 publication Critical patent/WO2015034123A1/fr

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Classifications

    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving management of server-side video buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/60—Memory management
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present invention relates to a digital broadcasting service, and more particularly, to a method of managing a buffer memory in playing a plurality of action cam images, and a playback apparatus according to the method.
  • IPTV which allows a user to selectively receive desired contents through a high-speed communication network, has become a major field of the broadcasting communication industry.
  • the action cam is a camcorder that a user shoots with a camera mounted on his / her body during various sports and outdoor activities. By changing the channel, the user can watch the image photographed from the desired angle.
  • the screen of the playback terminal into N pieces, it is possible to simultaneously watch N images taken by the N action cams.
  • the terminal plays back the images using a buffering technique.
  • a buffering time of video switching according to the screen switching is required. Therefore, the user has to wait for a certain time while watching the video, there is a problem that it is difficult to provide a seamless video seamless.
  • the present invention is to solve the problem of the prior art, even if the user is switching the screen of a number of action cam image while displaying a number of action cam image, the user's seamless image by minimizing the delay time due to the screen change Its purpose is to provide an optimal viewing environment that can provide. That is, when N buffers are used to simultaneously play received images in an environment broadcasted through the Internet through N action cams, a load is generated on the user terminal.
  • a buffer memory management method for simultaneously playing M screens including a second screen M and N are integers larger than 1, N ⁇ M
  • a plurality of action cam video reproducing apparatuses may include N buffer memories including first buffer memory to Nth buffer memory, and first screen to second screen.
  • a display unit (M and N are integers larger than 1, N ⁇ M) that simultaneously reproduces M screens, a decoder that decodes several action cam images and classifies each action cam, among the classified images Select N images, store each of the N images in each of the buffer memories, select two images having different action cams from among the images stored in the buffer memories, and select the selected image.
  • Line of the third image having a control for controlling to display the first image and the second image on the first screen and the second screen, respectively, and the action cam is distinguished from the images displayed on the first screen and the second screen If the third image is not included in the action cam switching signal receiving unit and the N selected images that receive the tag signal, the other image except for the first image and the second image is deleted from the buffer memory, And storing the third image in the buffer memory from which the image is deleted, and controlling the display to display the third image on the first screen and the first image on the second screen.
  • FIG. 1 is a diagram illustrating a plurality of action cam image generation systems.
  • FIGS. 2 to 3 are diagrams illustrating a buffer memory management method for providing a plurality of action cam images according to the related art.
  • FIG. 4 is a diagram illustrating a concept of providing a plurality of action cam images to two screens using four buffers when four action cam images are provided.
  • FIG. 5 is a flowchart illustrating a buffer memory management method of a plurality of action cam video reproducing apparatuses according to an exemplary embodiment of the present invention.
  • FIG. 6 is a diagram showing the configuration of a plurality of action cam video playback apparatus according to an embodiment of the present invention.
  • FIG. 7 and 8 illustrate a concept of a buffer memory management method of a plurality of action cam video playback apparatuses according to an exemplary embodiment of the present invention.
  • unit and device for components used in the following description are merely given in consideration of ease of preparation of the present specification, and the “unit” and “device” may be used interchangeably with each other. It can be designed in hardware or software.
  • FIG. 1 is a diagram illustrating a system of providing a plurality of action cam images according to an exemplary embodiment of the present invention.
  • the plurality of image capturing apparatuses 100 may be connected to the server 200 to perform an operation for providing a plurality of action cam images. That is, when a plurality of video photographing apparatuses photographs images at different locations and transmits the photographed images to the server, a plurality of action cam images provided by the server including the plurality of images are provided to the subscriber.
  • the action cam image providing service may be performed.
  • the server 200 receives each image from the plurality of attached video recording apparatuses 100 By generating the action cam video, the user can watch the game from each player's point of view.
  • FIGS. 2 to 3 are diagrams illustrating a buffer memory management method for providing a plurality of action cam images according to the related art.
  • FIG. 2 is a diagram illustrating a concept of playing a video generally on the Internet according to the prior art.
  • 1, 2, ... N are temporal flows of a video to be played for better understanding. That is, the image data is buffered in time order and reproduced by the image reproducing apparatus 20.
  • FIG. 3 is a diagram illustrating a buffering management method when a video captured by N action cam cameras is to be reproduced on N screens 110.
  • the speed of the buffering may decrease according to the performance of the terminal embedded in the playback apparatus 100, thereby causing a problem that the image being played is cut off. If the number of screens is smaller than the number of action cam videos, but N buffers are sufficient, video dropping problems can be prevented.However, if the playback apparatus maintains N buffers, it may cause an increase in manufacturing cost or other performance degradation. There is a problem.
  • FIG. 4 is a diagram illustrating a concept of displaying eight action cam videos according to a user's selection on two screens using four buffers when four action cam videos are provided.
  • FIG. 4 will be described with reference to a number of action cam video playback environment having the configuration as shown in this drawing. However, the number of the buffer memory and the number of screens may be variously changed within the range to which the present invention is applicable.
  • FIG. 5 is a flowchart illustrating a buffer memory management method of a plurality of action cam video reproducing apparatuses according to an exemplary embodiment of the present invention.
  • a first screen to a second screen through N buffer memories including first buffer memory to N buffer memory sequentially buffered.
  • a buffer memory management method for simultaneously reproducing M screens including M may be disclosed (M and N are integers greater than 1, N ⁇ M).
  • a plurality of action cam images may be decoded and classified for each action cam (S101).
  • N images may be selected (S102).
  • the playback apparatus may search an image playback history stored in the playback apparatus and, based on the searched history, N action cams having the highest selection frequency. You can select images.
  • each of the N images may be stored in each of the buffer memories (S103).
  • the playback apparatus may search for an image playback history stored in the playback apparatus, and select two action cam images that have been most recently played back based on the searched history.
  • the selected first image and the second image may be displayed on the first screen and the second screen, respectively (S105).
  • a selection signal of a third image having an action cam distinguished from the images displayed on the first screen and the second screen may be input (S106).
  • the playback apparatus when the playback apparatus receives the selection signal of the third image, it may receive the selection signal of the third image through a user interface.
  • the selection signal of the third image which is automatically generated based on a preset screen change setting may be input. That is, the screen change signal may be automatically input or may be input by the user.
  • the third image may be stored (S107).
  • the third image may be displayed on the first screen, and the first image may be displayed on the second screen (S108).
  • the method of providing a plurality of action cam images may further include receiving a selection signal of a fourth image having an action cam distinguished from images displayed on the first screen and the second screen. It may include. That is, the additional action cam switching signal may be received.
  • the method may further include deleting one of the N selected images except for the third image and the first image from the buffer memory, and storing the fourth image in the buffer memory from which the image is deleted. can do. That is, an additional buffer memory update is possible.
  • the method may further include displaying the fourth image on the first screen and the third image on the second screen.
  • the method may further include buffering the buffer memories to correspond to the order of the images displayed on the screens. That is, the buffering order of the buffer memory may be set based on the user's action cam selection.
  • the selection information may be stored in a storage unit of the playback apparatus. That is, the selection signal of the third image and the selection signal of the fourth image may be stored as an image reproduction history.
  • FIG. 6 is a diagram showing the configuration of a plurality of action cam video playback apparatus according to an embodiment of the present invention.
  • the plurality of action cam video player may be various devices capable of playing video such as a smartphone, a smart TV, a PC, a PDA, and the like.
  • the multiple action cam video reproducing apparatus 100 includes a buffer memory 201, a decoder 202, a control unit 203, a screen switching controller 204, an action cam switching signal receiving unit 205, and a display unit. 206 may be included.
  • the buffer memory 201 may include a first buffer memory to an Nth buffer memory.
  • the buffer memories may be physically divided buffer memories, or one physical buffer memory may be divided into a plurality of buffer memories.
  • the display unit 206 may simultaneously reproduce M screens including the first to second screens. That is, by dividing one screen into several areas and displaying respective images on the divided screens, a plurality of action cam video services may be provided to the user.
  • M and N are integers larger than 1, that is, plural, and N is larger than M. That is, the number of buffer memories is larger than the number of screens displayed at the same time.
  • a decoder 202 decodes several action cam images.
  • images of each action cam may be separately transmitted, and according to another embodiment, images of several action cams may be transmitted as one data file in one data file. Can be. Therefore, in this case, the decoder may classify the images for each action cam while decoding the images.
  • the controller 203 selects N images from the classified images, stores each of the N images in each of the buffer memories, and stores different action cams among the images stored in the buffer memories. Two images may be selected to control the display to display the selected first image and the second image on the first screen and the second screen, respectively. That is, the controller 203 performs basic operations for providing a plurality of action cam images.
  • the action cam switching signal receiver 204 receives a selection signal of a third image having an action cam that is distinguished from images displayed on the first screen and the second screen.
  • the action cam switch signal receiver 204 may receive a selection signal of the third image through a user interface, and according to another embodiment, the action cam switch signal receiver 204 may be configured in advance.
  • the selection signal of the third image which is automatically generated based on the screen change setting, may be input.
  • the screen switching control unit 205 may delete one of the N selected images other than the first image and the second image from the buffer memory, and delete the image from the buffer memory. After storing the image, the third image is displayed on the first screen and the first image is displayed on the second screen.
  • the action cam switch signal receiver 204 and the screen switch controller 205 are separately configured, and the action cam switch signal receiver 204 is included in the screen switch controller 205.
  • the action cam switching signal receiver 204 may be merged with the screen switching control unit 205 or may be configured apart from other objects. That is, the components of this drawing are only an embodiment, and each component may be merged or further subdivided.
  • the action cam switching signal receiver 204 may further receive a selection signal of a fourth image having an action cam that is distinguished from images displayed on the first screen and the second screen, Correspondingly, the controller 203 deletes one of the N selected images other than the third image and the first image from the buffer memory, and deletes the other image from the buffer memory. After storing the image, it is possible to control to display the fourth image on the first screen and the third image on the second screen. That is, additional screen switching can be performed.
  • the plurality of action cam video reproducing apparatuses 100 may further include a storage unit (not shown).
  • the storage unit may store data necessary for driving a plurality of action cam video reproducing apparatuses 100, and the storage unit may store the selection signal of the third image and the fourth image inputted from the action cam switching signal receiver 204.
  • the selection signal can be stored as a video reproduction history.
  • the controller 203 searches for the video playback history stored in the playback device in storing the selected images in the buffer memory according to an embodiment. Based on the retrieved history, N action cam images having the highest selection frequency are selected and stored in the buffer memory.
  • the controller 203 searches for the video playback history stored in the playback apparatus in the first display of the video, and searches for the searched video. Based on the history, it is possible to control to select and display the two most recently played action cam images.
  • FIG. 7 and 8 illustrate a concept of a buffer memory management method of a plurality of action cam video playback apparatuses according to an exemplary embodiment of the present invention.
  • a buffer memory and a playback screen may be managed.
  • Each buffer memories may be configured in a plurality of action cam image reproducing apparatuses, and each of the images having four distinct action cams may be stored in the four buffer memories.
  • the display apparatus since the display apparatus has two display regions, images of the first action cam and the second action cam may be displayed among the four action cam images.
  • the third action cam is selected while the first action cam and the second action cam images are displayed, since the third action cam is already stored in the buffer memory, the third action cam is first updated without updating the buffer memory.
  • the first action cam displayed on the first screen is displayed on the second screen.
  • the fourth action cam is selected while the third action cam and the first action cam image are displayed, the fourth action cam is already stored in the buffer memory, and thus the fourth action cam is not updated.
  • the first screen is displayed on the first screen, and the third action cam displayed on the first screen is displayed on the second screen.
  • the first action cam is selected while the fourth action cam and the third action cam images are displayed, the first action cam is already stored in the buffer memory, and thus the first action cam is not updated.
  • the first screen is displayed on the first screen, and the fourth action cam displayed on the first screen is displayed on the second screen.
  • the second action cam is selected while the first action cam and the fourth action cam image are displayed, the second action cam is already stored in the buffer memory, and thus the second action cam is not updated.
  • the first action cam displayed on the first screen is displayed on the second screen.
  • the fourth action cam is selected while the second action cam and the first action cam image are displayed, the fourth action cam is already stored in the buffer memory, and thus the fourth action cam is not updated.
  • the first screen is displayed on the first screen, and the second action cam displayed on the first screen is displayed on the second screen.
  • the first action cam is selected while the fourth action cam and the second action cam images are displayed, the first action cam is already stored in the buffer memory, and thus the first action cam is not updated.
  • the first screen is displayed on the first screen, and the fourth action cam displayed on the first screen is displayed on the second screen.
  • the buffer memory storing the image displayed on the first screen is buffered first, and the buffer memory storing the image displayed on the first screen is next buffered. That is, the buffering order is the same as the order of the action cam selection signals.
  • the buffer memory and the playback screen may be managed.
  • the buffer memory is updated to store the image of the fifth action cam in the buffer memory, and the fifth action cam is removed.
  • the first action cam displayed on the first screen is displayed on the second screen.
  • the buffer memory is updated to store the image of the fourth action cam in the buffer memory, and the fourth action cam is displayed. Is displayed on the first screen, and the fifth action cam displayed on the first screen is displayed on the second screen.
  • the first action cam is selected while the fourth action cam and the fifth action cam images are displayed, the first action cam is already stored in the buffer memory, and thus the first action cam is not updated.
  • the first screen is displayed on the first screen, and the fifth action cam displayed on the first screen is displayed on the second screen.
  • the buffer memory is updated to store the image of the seventh action cam in the buffer memory, and the seventh action cam is displayed. Is displayed on the first screen, and the first action cam displayed on the first screen is displayed on the second screen.
  • the fourth action cam is selected while the fifth action cam and the first action cam image are displayed, the fourth action cam is already stored in the buffer memory, and thus the fourth action cam is not updated.
  • the first screen is displayed on the first screen, and the seventh action cam displayed on the first screen is displayed on the second screen.
  • the buffer memory is updated to store the image of the sixth action cam in the buffer memory, and the sixth action cam is displayed. Is displayed on the first screen, and the fourth action cam displayed on the first screen is displayed on the second screen.
  • the buffer memory storing the image displayed on the first screen is buffered first, and the buffer memory storing the image displayed on the first screen is next buffered. That is, the buffering order is the same as the order of the action cam selection signals.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

La présente invention permet de synchroniser des images provenant de plusieurs caméras d'action par un procédé comprenant les étapes consistant à : faire qu'une pluralité de terminaux qui filment des images sous différents angles en différents emplacements envoie à un serveur des informations relatives à chaque terminal ; faire que le serveur détermine, à partir des informations émises par les terminaux, pour chaque terminal de la pluralité de terminaux, si le terminal fait partie d'un groupe de prise d'images préalablement configuré ; faire que le serveur envoie des informations de synchronisation et un signal de commande aux terminaux dont on a déterminé qu'ils font partie du groupe de prise d'images ; faire que le terminal code les images filmées en images numériques ; faire que le terminal génère des informations de marquage en effectuant un marquage sur les images filmées d'après les informations de synchronisation reçues ; et faire que le terminal envoie au serveur les images codées et les informations de marquage.
PCT/KR2013/008291 2013-09-04 2013-09-13 Procédé de gestion de tampon pour la reproduction d'images provenant de plusieurs caméras d'action et appareil de reproduction associé WO2015034123A1 (fr)

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KR10-2013-0106016 2013-09-04
KR20130106016A KR101511758B1 (ko) 2013-09-04 2013-09-04 여러 대의 액션캠 영상을 재생하기 위한 버퍼관리 방법 및 그에 따른 재생장치

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Cited By (2)

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WO2019144818A1 (fr) * 2018-01-24 2019-08-01 深圳市道通科技股份有限公司 Procédé de transmission de trame vidéo, détecteur et équipement utilisateur
CN112860165A (zh) * 2021-02-01 2021-05-28 维沃移动通信有限公司 文本信息的获取方法、装置

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CN112860165B (zh) * 2021-02-01 2022-09-30 维沃移动通信有限公司 文本信息的获取方法、装置

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