WO2019093711A1 - Appareil de lecture multimédia, serveur de commande, et procédé pour fournir un contenu sans discontinuité à l'aide d'un réseau de diffusion par satellite et d'un réseau de communication mobile - Google Patents

Appareil de lecture multimédia, serveur de commande, et procédé pour fournir un contenu sans discontinuité à l'aide d'un réseau de diffusion par satellite et d'un réseau de communication mobile Download PDF

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Publication number
WO2019093711A1
WO2019093711A1 PCT/KR2018/013134 KR2018013134W WO2019093711A1 WO 2019093711 A1 WO2019093711 A1 WO 2019093711A1 KR 2018013134 W KR2018013134 W KR 2018013134W WO 2019093711 A1 WO2019093711 A1 WO 2019093711A1
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WIPO (PCT)
Prior art keywords
content
satellite
mobile communication
communication network
received
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PCT/KR2018/013134
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English (en)
Korean (ko)
Inventor
김용필
이화성
김진우
예문해
배효승
최한규
Original Assignee
주식회사 케이티
주식회사 케이티스카이라이프
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Publication of WO2019093711A1 publication Critical patent/WO2019093711A1/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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4381—Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2665—Gathering content from different sources, e.g. Internet and satellite
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite

Definitions

  • the present invention relates to a media playback apparatus, a control server, and a method for providing seamless content through a satellite broadcasting network and a mobile communication network.
  • Satellite broadcasting refers to a form of broadcasting in which a broadcasting signal transmitted from the ground is retransmitted to a receiving antenna on the ground using a satellite in a geostationary orbit about 36,000 km away from the earth. Unlike terrestrial broadcasting, satellite broadcasting can be broadcasted nationwide without a relay facility, and it is widely used because it has the merit of eliminating irregularities caused by jamming and local specificity.
  • Satellite broadcasting provided on a conventional bus was resumed when a bus entered a shaded area such as a tunnel, after the satellite broadcast was interrupted and the bus departed the shaded area. As a result, the viewer had to suffer inconvenience because the flow of the broadcast being watched was interrupted.
  • the present invention relates to a media playback apparatus for providing seamless content using a satellite broadcasting network and a mobile communication network although the viewing of satellite broadcasting is stopped in a satellite signal transmission area such as a tunnel, Control server and method.
  • the content received from the satellite broadcasting network is stored in the buffer, and the content stored in the buffer is delayed and reproduced for a predetermined time so that even if the bus enters the satellite transliteration region,
  • a media playback apparatus for continuously playing back content through an active control scheme in which a content received from a satellite broadcasting network is converted into content received from a mobile communication network by a separate control server in consideration of a usage environment of the media playback apparatus in a bus, Server and method. It is to be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.
  • an embodiment of the present invention provides a content distribution system including a first receiver for receiving content from a service server via a satellite broadcasting network, a second receiver for receiving the content from the service server, A determination unit for determining whether the media reproduction apparatus has entered a satellite transliteration region based on a satellite signal for the received content, and a determination unit for determining whether the media reproduction apparatus has entered the satellite transliteration region from the service server, And a second receiving unit for receiving the content through the mobile communication network, wherein the reproducing unit converts the delayed reproduced content into content received through the mobile communication network when the media reproduction apparatus enters the satellite transliteration region, There is provided a media playback apparatus for playing back contents seamlessly .
  • an information processing apparatus including an analyzing unit for analyzing a use environment of a plurality of media reproducing apparatuses installed in a bus, and an analyzing unit for analyzing the use environment of the plurality of media reproducing apparatuses And a control unit for controlling switching between content received via a satellite broadcasting network and content received from the service server through the mobile communication network, Determining whether or not the media reproduction apparatus has entered the satellite transliteration region based on the satellite signal for the received content, and if the media reproduction apparatus enters the satellite transliteration region , And the content Being reproduced is switched to the content received via the same communications network may provide the control server will be reproduced without interruption.
  • a method for controlling a content server comprising the steps of: receiving content from a service server via a satellite broadcasting network; reproducing the received content by delaying the received content for a predetermined delay time, Determining whether the media reproduction apparatus has entered a satellite transliteration region based on a satellite signal for the content, receiving the content from the service server through a mobile communication network according to a determination result, Converting the delayed contents into contents received through the mobile communication network and reproducing the contents in order to continuously reproduce the contents when the user enters the satellite transliteration area.
  • the viewing of the satellite broadcast is stopped in a satellite signal range such as a tunnel, a building, A control server, and a method for providing seamless content using the media playback apparatus.
  • the content received from the satellite broadcasting network is stored in the buffer, and the content stored in the buffer is delayed and reproduced for a predetermined time so that even if the bus enters the satellite transliteration region, A control server and a method for continuously reproducing content stored in a buffer until a predetermined time is reached and reproducing the content continuously without interruption.
  • a media playback apparatus for continuously playing back content through an active control scheme in which a content received from a satellite broadcasting network is converted into content received from a mobile communication network by a separate control server in consideration of a usage environment of the media playback apparatus in a bus, Server and method.
  • FIG. 1 is a configuration diagram of a content providing system according to an embodiment of the present invention.
  • FIG. 2 is a configuration diagram of a media player according to an embodiment of the present invention.
  • FIG. 3 is an exemplary diagram for explaining a process of seamlessly reproducing content when a content is delayed and reproduced in a media playback apparatus according to an embodiment of the present invention and is switched to a content received through a mobile communication network.
  • FIG. 4 is an exemplary diagram illustrating a screen in which a content is played back in a media playback apparatus according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for providing seamless contents using a satellite broadcasting network and a mobile communication network in a media player according to an embodiment of the present invention.
  • FIG. 6 is a configuration diagram of a control server according to an embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating a method of controlling seamless content using a satellite broadcasting network and a mobile communication network in a control server according to an exemplary embodiment of the present invention.
  • &quot part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware.
  • a content providing system 1 includes a service server 100, a satellite 110, a base station 120, a media playback apparatus 140, a mobile communication modem 150, a satellite antenna 160, A server 170, and the like.
  • the service server 100, the media player 140, the mobile communication modem 150, the satellite antenna 160 and the control server 170 illustratively include components that can be controlled by the content providing system 1 Respectively.
  • the media player 140, the mobile communication modem 150, and the satellite antenna 160 may be included in the bus 130, but are not limited thereto.
  • the components of the content providing system 1 of FIG. 1 are generally connected through a network.
  • the media playback apparatus 140 may be connected to the service server 100 or the control server 170 at the same time or at intervals.
  • the network refers to a connection structure in which information can be exchanged between each node such as terminals and servers.
  • the network includes a local area network (LAN), a wide area network (WAN), a wide area network (WWW) Wide Web, wired / wireless data communication network, telephone network, wired / wireless television communication network, and the like.
  • wireless data communication networks include 3G, 4G, 5G, 3GPP, LTE, WIMAX, Wi-Fi, Bluetooth, infrared, Communications, Visible Light Communication (VLC), LiFi, and the like.
  • the service server 100 may provide the content requested by the user to the media player 140.
  • the service server 100 may provide the content requested by the user to the media playback apparatus 140 through the satellite broadcasting network 115.
  • the service server 100 can provide the content to the media playback apparatus 140 through the mobile communication network 125.
  • the satellite 110 may receive content from the service server 100 and transmit the content to the media playback apparatus 140 via the satellite broadcast network 115.
  • the base station 120 may receive the content from the service server 100 and transmit the content to the media playback apparatus 140 through the mobile communication network 125 when the media playback apparatus 140 enters the satellites.
  • the media playback apparatus 140 receives the content requested by the user through the satellite broadcasting network 115 from the service server 100 and plays the received content by delaying the received content for a predetermined delay time have. For this, the media playback apparatus 140 may store the content received through the satellite broadcasting network 115 in the buffer for a preset time, and may play back the content stored in the buffer by delaying the delay time.
  • the media playback apparatus 140 may determine whether the media playback apparatus 140 has entered the satellite transliteration zone based on the satellite signal for the received content.
  • the media playback apparatus 140 corresponds to one of a plurality of media playback apparatuses 140 installed in the bus 130.
  • the media playback apparatus 140 may be configured to play media It can be determined whether or not the reproducing apparatus 140 has entered the satellite transliteration region.
  • the media playback apparatus 140 may receive the content from the service server 100 through the mobile communication network 125 according to the determination result. For example, when the media reproduction apparatus 140 enters the satellite transliteration region and fails to receive the satellite signal for a predetermined threshold time or longer, the media reproduction apparatus 140 requests the content through the mobile communication network 125, The content stored in the buffer is continuously reproduced until the switching preparation time, which is generated by switching the contents in the delayed reproduction according to the request to the communication network 125 to the contents received through the mobile communication network 125, The content received via the communication network 125 can be subsequently reproduced.
  • the media playback apparatus 140 can store content received via the satellite broadcasting network 115 in a buffer for about five seconds and play back the content in a delayed manner. If the satellite broadcasting signal is not received from the satellite broadcasting network 115 for more than 2 seconds, the media playback apparatus 140 may request the reception of the content using the mobile communication network 125. [ The media playback apparatus 140 may receive the content received via the satellite broadcasting network 115 at a switching preparation time required for switching the communication network for receiving the content from the satellite broadcasting network 115 to the mobile communication network 125 Since the media playback apparatus 140 plays back the content previously stored in the buffer during the switching preparation time and completes the switching preparation during playback, the media playback apparatus 140 can continuously reproduce the content without interruption.
  • the media player 140 continuously reproduces the content received through the mobile communication network 125 until the media player 140 leaves the satellite translator area, and the media player 140 sets the satellite translator area If the satellite signal is received for more than the threshold time, the content re-received through the satellite broadcasting network 115 can be continuously reproduced. For example, when the content is received over a certain period of time through the satellite broadcasting network 115, the media playback apparatus 140 determines that the satellite broadcasting station such as a tunnel has left the satellite broadcasting station, It is possible to switch to the reception of the contents to the broadcasting network 115. [ At this time, since the media playback apparatus 140 receives the content from the mobile communication network 125 and plays back the content stored in the buffer until the content is received through the satellite broadcasting network 115, the media playback apparatus 140 can prevent the content have.
  • the satellite broadcasting station such as a tunnel has left the satellite broadcasting station
  • the media playback apparatus 140 receives control information from the control server 170 based on the number of the media playback apparatuses 140 using the mobile communication network 125 among the plurality of media playback apparatuses, When receiving a request to switch between the content received through the mobile communication network 125 and the content received through the mobile communication network 125, And can be reproduced seamlessly.
  • the media playback apparatus 140 may include a threshold time for determining whether or not the media playback apparatus 140 has entered a satellite transliteration region, a transmission delay time occurring when content is received through the mobile communication network 125,
  • the reproduction loss time can be predicted based on the compression processing time and the like for reproducing the contents received via the network.
  • the delay time may be more than the threshold time.
  • the media playback apparatus 140 may transmit the content to the satellite broadcasting network 115, The content can be played back seamlessly by synchronizing the playback of the content received via the mobile communication network 125 with the playback of the content received via the mobile communication network 125.
  • the media playback apparatus 140 can provide a synchronized video image without a time interval between the content received from the satellite broadcasting network 115 and the content received from the mobile communication network 125.
  • the media reproduction apparatus 140 when the media reproduction apparatus 140 enters the satellite transliteration region, the media reproduction apparatus 140 can reproduce content that has been delayed reproduced by switching to the content received through the mobile communication network 125 and reproduce the content have.
  • the mobile communication modem 150 can receive content from the service server 100 through the mobile communication network 125 and transmit the content to the media playback apparatus 140.
  • the mobile communication network 125 has a first frequency (bandwidth: 20 Mhz) of 1.8 GHz, a second frequency (bandwidth: 10 Mhz) of 900 MHz, a third frequency (bandwidth: 10 Mhz) of 2.1 Ghz, (Bandwidth 10 Mhz), and the media playback apparatus 140 may receive the content through Long Term Evolution (LTE) Internet communication over the first frequency.
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • the maximum Internet communication speed of one radio frequency is 150Mbps
  • CA Carrier Aggregation
  • bundling two radio frequencies with carrier aggregation technology can speed up to 225Mbps, bundling three radio frequencies up to 300Mbps, and bundling four radio frequencies up to 375Mbps.
  • the reason for using carrier aggregation is that media video contents have a large transmission rate of at least 2 to 10 Mbps, and when there are many users connected to peripheral base stations, the line speed rapidly decreases, Thereby ensuring the quality of the content providing service.
  • CA carrier aggregation
  • the satellite antenna 160 may receive the content from the service server 100 through the satellite broadcasting network 115 and transmit the content to the media playback apparatus 140.
  • the control server 170 can analyze the usage environment of the plurality of media playback apparatuses 140 installed in the bus 130.
  • the use environment of the plurality of media playback apparatuses 140 includes the number of the media playback apparatuses 140 using the mobile communication network 125 among the plurality of media playback apparatuses 140, the traffic concentration period, and the position of the bus 130 .
  • the control server 170 may periodically collect usage environments of a plurality of media playback apparatuses 140.
  • the control server 170 analyzes the content received from the service server 100 through the satellite broadcasting network in the plurality of media playback apparatuses 140 based on the usage environment of the plurality of analyzed media playback apparatuses 140, The content can be controlled to be switched between contents received via the mobile communication network 125.
  • control server 170 determines whether the usage environment of the plurality of media playback apparatuses 140 is equal to or greater than a predetermined threshold value of the media playback apparatuses 140 using the mobile communication network 125 among the plurality of media playback apparatuses 140 , It is possible to control the switching time between the content received through the satellite broadcasting network 115 and the content received through the mobile communication network 125 for each of the media playback apparatuses 140 using the mobile communication network 125 .
  • the control server 170 controls the media playback apparatus 140 using the mobile communication network 125 It is possible to control the switching time to be different between the content received through the satellite broadcasting network 115 and the content received through the mobile communication network 125.
  • control server 170 may transmit the content received through the satellite broadcasting network 115 and the content received through the mobile communication network 125 By controlling not to switch, it is possible to prevent inconvenience caused by frequent video switching.
  • the control server 170 determines whether or not the media playback apparatus 140 has entered the satellites translucency zone based on whether the satellite signal has been received by the media playback apparatus 140 for a predetermined threshold time or more, The predetermined threshold time corresponding to each of the plurality of media playback apparatuses 140 can be controlled.
  • the media player 140 includes a first receiving unit 210, a buffer unit 220, a reproducing unit 230, a determining unit 240, a predicting unit 250, and a second receiving unit 260, . ≪ / RTI >
  • the first receiving unit 210 may request content from the service server 100 through the satellite broadcasting network 115 and receive the content requested by the user through the satellite broadcasting network 115.
  • the buffer unit 220 may store the content received through the satellite broadcasting network 115 or the mobile communication network 125 for a predetermined time to perform delayed reproduction of the content.
  • the playback unit 230 can play back the received content.
  • the reproducing unit 230 may delay the received content by a predetermined delay time than the actual time at which the content is to be reproduced.
  • the playback unit 230 may play back the content for a delay time using the content stored in the buffer unit 220.
  • the playback unit 230 switches the contents received through the satellite broadcasting network 115 to the contents received through the mobile communication network 125 and reproduces the contents when the media playback apparatus 140 enters the satellite- Can be played without.
  • the playback unit 230 switches the content received through the mobile communication network 125 to the content received through the satellite broadcasting network 115 and plays back the content when the media playback apparatus 140 leaves the satellite transliteration region Can be played without.
  • the playback unit 230 requests the content to the second receiver 260, The content stored in the buffer unit 220 until the switching preparation time occurs by receiving the content through the satellite broadcast 115 in response to the request to the receiver 260 and converting the content in the delayed reproduction to the content received through the mobile communication network 125 And can continuously reproduce the content received through the mobile communication network 125 after the switching preparation time has elapsed.
  • the delay time may be more than the threshold time.
  • the reproducing unit 230 may continuously reproduce the content received through the mobile communication network 125 until the media reproducing apparatus 140 leaves the satellite translating region and the media reproducing apparatus 140 may reproduce the satellite broadcasting If the satellite signal is received for more than the threshold time after departing from the area, the re-received content can be continuously reproduced through the satellite broadcasting network 115.
  • the playback unit 230 controls the number of the media playback apparatuses 140 using the mobile communication network 125 among the plurality of media playback apparatuses by the control server 170,
  • the content received through the satellite broadcasting network 115 and the content received through the mobile communication network 125 are received through the mobile communication network 125. [ The contents can be switched and reproduced seamlessly.
  • the reproducing unit 230 may reproduce the content received through the satellite broadcasting network 115 Reproduction can be seamlessly reproduced by synchronizing the reproduction of the content received through the mobile communication network 125.
  • the determination unit 240 may determine whether the media playback apparatus 140 has entered the satellite transliteration zone based on the satellite signal for the received content. For example, the determination unit 240 may determine whether the media playback apparatus 140 has entered the satellite transliteration region according to whether the satellite signal received through the satellite broadcast 115 corresponds to a predetermined intensity or less have. The media playback apparatus 140 corresponds to any one of a plurality of media playback apparatuses installed in the bus 130. The determination unit 240 may determine whether the media playback apparatus 140 is a media playback apparatus based on a satellite signal that changes as the bus 130 moves. It can be determined whether or not the mobile terminal 140 has entered the satellite transliteration area.
  • the predicting unit 250 determines a threshold time for determining whether the media reproduction apparatus 140 has entered the satellite transliteration region or whether the media reproduction apparatus 140 and the satellite broadcasting network 115 are connected to each other, ), And a compression processing time for reproducing the content received through the mobile communication network 125. [0156] In addition, as shown in FIG.
  • the second receiving unit 260 may request content from the service server 100 through the mobile communication network 125 and receive the content from the service server 100 through the mobile communication network 125 according to the determination result.
  • FIG. 3 is an exemplary diagram for explaining a process of seamlessly reproducing content when a content is delayed and reproduced in a media playback apparatus according to an embodiment of the present invention and is switched to a content received through a mobile communication network.
  • the media playback apparatus 140 may receive the satellite reception image 321 through the satellite broadcasting network 300. At this time, the media playback apparatus 140 can buffer the delayed playback 320 of the received satellite image 321 using the buffering delay transmission function.
  • the media playback apparatus 140 When the signal is interrupted (330) due to a bad satellite sensitivity due to entry of a satellite into a translucent area such as a tunnel or an urban area where traffic is concentrated, the media playback apparatus 140 performs a movement such as LTE (Long Term Evolution) It is possible to receive and reproduce the LTE reception image 331 through the communication network 310.
  • the media playback apparatus 140 can perform buffered delay playback of the LTE reception image 331 as well as buffered delayed transmission of the received satellite reception image 321.
  • the buffer period for the satellite signal can be set differently. For example, when the buffer of the media playback apparatus 140 is 3 seconds, when changing to unicast streaming by LTE for 3 seconds or arbitrary change for optimization, the live broadcast signal is transmitted to the satellite in real time. At this time, the buffer time of the media playback apparatus 140 may be changed.
  • the media playback apparatus 140 can call a unicast server (not shown). Since the buffer of the media playback apparatus 140 is n seconds long due to a weak signal from the satellite, the media playback apparatus 140 can perform unicast conversion faster than n seconds. At this time, if the video of the broadcast PP company is a general HD video, not a 4K video, the baseband video can be compressed by the H.264 codec and transmitted through the satellite.
  • LTE traffic can be minimized by encoding baseband signal, a source PP signal, with HEVC (H.265) or AVS + or VP0 using the latest high compression codec technology.
  • the media playback apparatus 140 determines that the media playback apparatus 140 has departed from the satellite sound range, the media playback apparatus 140 restores the satellite signal 340 and receives the satellite reception image 341 through the satellite broadcast network 300 Can be reproduced.
  • the media playback apparatus 140 can seamlessly reproduce images by buffer delayed reproduction of images.
  • FIG. 4 is an exemplary diagram illustrating a screen in which a content is played back in a media playback apparatus according to an embodiment of the present invention.
  • the media playback apparatus 140 receives the content 420 from the service server 100 through the satellite broadcasting network 115 using the satellite 410 and stores the received content 420 in a buffer And the content 420 can be delayed and reproduced for a predetermined delay time than the actual time to be reproduced.
  • the media playback apparatus 140 determines whether the media playback apparatus 140 has entered the satellite transliteration zone based on the satellite signal for the content, and then, from the service server 100 according to the determination result, The content can be received through the mobile communication network 125.
  • the media playback apparatus 140 converts the delayed playback content 420 to the content 440 received through the mobile communication network 125 and reproduces the content It can be reproduced seamlessly.
  • the playback of the content 420 received through the satellite broadcasting network 115 and the playback of the content 440 received through the mobile communication network 125 are synchronized with each other.
  • FIG. 5 is a flowchart of a method for providing seamless content using a satellite broadcasting network and a mobile communication network in a media player 140 according to an exemplary embodiment of the present invention.
  • a method for providing seamless content using the satellite broadcasting network 115 and the mobile communication network 125 performed by the media playback apparatus 140 according to the embodiment shown in FIG. And is processed in a time-series manner in the content providing system 1 according to the example. Therefore, even if omitted in the following description, a method of providing seamless content using the satellite broadcasting network 115 and the mobile communication network 125 performed by the media playback apparatus 140 according to the embodiment shown in FIGS. 1 to 4 .
  • the media playback apparatus 140 may receive the content requested by the user via the satellite broadcasting network 115 from the service server 100.
  • the media playback apparatus 140 may play back the received content by delaying the received content for a predetermined delay time than the actual time to be reproduced.
  • the media playback apparatus 140 may determine whether or not the media playback apparatus 140 has entered the satellite sound range based on the satellite signal for the received content.
  • step S540 the media playback apparatus 140 may receive the content from the service server 100 through the mobile communication network 125 according to the determination result.
  • step S550 when the media playback apparatus 140 enters the satellite transliteration area, the media playback apparatus 140 converts the content that has been delayed reproduced to seamlessly reproduce the content to the content received through the mobile communication network 125 Can be reproduced.
  • the media playback apparatus 140 further includes a step of storing the content received through the satellite broadcasting network 115 for a predetermined time, and a step of delaying and reproducing the content stored in the buffer unit for a delay time can do.
  • the media playback apparatus 140 may include a step of requesting content to the second receiver when the media playback apparatus 140 fails to receive a satellite signal for a predetermined threshold time or longer after entering the satellite transliteration region, Continuously reproducing the contents stored in the buffer until the switching preparation time occurs by switching the content being delayed reproduced in response to the request to the second receiver to the contents received through the mobile communication network 125, And reproducing the content received through the mobile communication network 125 in succession.
  • the media playback apparatus 140 continuously plays the content received through the mobile communication network 125 until the media playback apparatus 140 leaves the satellite gamut area, and the media playback apparatus 140 Receiving a satellite signal over a critical time after departing from the satellite transliteration area, and reproducing the re-received content through the satellite broadcasting network 115.
  • steps S510 to S550 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention.
  • some of the steps may be omitted as necessary, and the order between the steps may be switched.
  • control server 170 may include an analysis unit 610 and a control unit 620.
  • the analysis unit 610 may analyze the usage environment of a plurality of media playback apparatuses 140 installed in the bus 130.
  • the use environment of the plurality of media playback apparatuses 140 may be determined based on, for example, the number of the media playback apparatuses 140 using the mobile communication network 125, the traffic concentration period (for example, The location of the bus 130, and the like.
  • the control unit 620 controls the content received from the service server 100 through the satellite broadcasting network 115 in the plurality of media playback apparatuses 140 based on the usage environments of the plurality of analyzed media playback apparatuses 140, 100 to the content received through the mobile communication network 125 can be controlled.
  • control unit 620 may determine that the usage environment of the plurality of media playback apparatuses 140 is equal to or greater than a predetermined threshold value of the number of the media playback apparatuses 140 using the mobile communication network 125 among the plurality of media playback apparatuses 140 , Control is performed so that the switching time between content received through the satellite broadcasting network 115 and content received through the mobile communication network 125 is different for each of at least one media playback apparatus 140 using the mobile communication network 125 .
  • the control unit 620 may control at least one media playback apparatus 140 using the mobile communication network 125 when the media playback apparatus 140 uses the mobile communication network 125 in the traffic concentration period, It is possible to control the switching time to be different between the content received through the satellite broadcasting network 115 and the content received through the mobile communication network 125.
  • control unit 620 switches between the content received through the satellite broadcasting network 115 and the content received through the mobile communication network 125 Can be controlled.
  • the media playback apparatus 140 determines whether or not the media playback apparatus 140 has entered the satellite gamut area and the satellite playback signal has been received by the media playback apparatus 140 for a predetermined threshold time or longer.
  • the predetermined threshold time corresponding to each of the plurality of media playback apparatuses 140 can be controlled based on the use environment of the media playback apparatus 140.
  • FIG. 7 is a flowchart illustrating a method of controlling seamless content using a satellite broadcasting network and a mobile communication network in a control server according to an exemplary embodiment of the present invention.
  • the method of providing seamless content using the satellite broadcasting network 115 and the mobile communication network 125 performed by the control server 170 according to the embodiment shown in FIG. 7 is similar to that of the embodiment In the content providing system 1 according to the present invention. Accordingly, the present invention is also applicable to a method of providing seamless content using the satellite broadcasting network and the mobile communication network performed by the control server 170 according to the embodiment shown in FIGS.
  • control server 170 may analyze the usage environment of the plurality of media playback apparatuses 140 installed in the bus 130.
  • step S720 the control server 170 transmits the content received from the service server 100 through the satellite broadcasting network 115 in the plurality of media playback apparatuses 140 based on the usage environments of the plurality of analyzed media playback apparatuses 140 And the contents received from the service server 100 through the mobile communication network 125 can be controlled to be switched.
  • steps S710 to S730 may be further divided into further steps or combined into fewer steps, according to an embodiment of the present invention.
  • some of the steps may be omitted as necessary, and the order between the steps may be switched.
  • the method for providing seamless content using the satellite broadcasting network and the mobile communication network in the media playback apparatus and the control server described with reference to Figs. 1 to 7 includes a computer program stored in a medium executed by the computer or a command executable by the computer
  • the present invention may be embodied in the form of a recording medium.
  • a method for providing seamless content using a satellite broadcasting network and a mobile communication network in a control server may be implemented in the form of a computer program stored in a medium executed by a computer .
  • Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media.
  • the computer-readable medium may also include computer storage media.
  • Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un appareil de lecture multimédia, qui fournit un contenu sans discontinuité à l'aide d'un réseau de diffusion par satellite et d'un réseau de communication mobile. L'appareil comprend : une première unité de réception pour recevoir un contenu, d'un serveur de service, à l'aide d'un réseau de diffusion par satellite ; une unité de lecture pour lire le contenu reçu en retardant l'instant réel auquel le contenu est lu d'un retard prédéterminé ; une unité de détermination pour déterminer si l'appareil de lecture multimédia est entré dans une zone d'ombre de satellite sur la base du signal satellite par rapport au contenu reçu ; et une seconde unité de réception pour recevoir le contenu, du serveur de service, à l'aide d'un réseau de communication mobile selon le résultat déterminé, l'unité de relecture lisant sans discontinuité le contenu et lisant le contenu lu retardé et le commutant au contenu reçu à l'aide du réseau de communication mobile si l'appareil de lecture multimédia est entré dans la zone d'ombre de satellite.
PCT/KR2018/013134 2017-11-09 2018-10-31 Appareil de lecture multimédia, serveur de commande, et procédé pour fournir un contenu sans discontinuité à l'aide d'un réseau de diffusion par satellite et d'un réseau de communication mobile WO2019093711A1 (fr)

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KR1020170148947A KR101994114B1 (ko) 2017-11-09 2017-11-09 위성 방송망 및 이동 통신망을 통해 끊김 없는 컨텐츠를 제공하는 미디어 재생 장치, 제어 서버 및 방법
KR10-2017-0148947 2017-11-09

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WO2019093711A1 true WO2019093711A1 (fr) 2019-05-16

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