WO2015072020A1 - Dispositif de traitement d'informations et procédé de traitement d'informations - Google Patents

Dispositif de traitement d'informations et procédé de traitement d'informations Download PDF

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Publication number
WO2015072020A1
WO2015072020A1 PCT/JP2013/080933 JP2013080933W WO2015072020A1 WO 2015072020 A1 WO2015072020 A1 WO 2015072020A1 JP 2013080933 W JP2013080933 W JP 2013080933W WO 2015072020 A1 WO2015072020 A1 WO 2015072020A1
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WO
WIPO (PCT)
Prior art keywords
content
communication unit
playback
source device
communication
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Application number
PCT/JP2013/080933
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English (en)
Japanese (ja)
Inventor
プラショブ ナイア
Original Assignee
株式会社 東芝
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.)
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Publication date
Application filed by 株式会社 東芝 filed Critical 株式会社 東芝
Priority to PCT/JP2013/080933 priority Critical patent/WO2015072020A1/fr
Publication of WO2015072020A1 publication Critical patent/WO2015072020A1/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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet

Definitions

  • Embodiments described herein relate generally to an information processing apparatus and an information processing method.
  • interfaces Standards or industry standards (hereinafter collectively referred to as “interfaces”) for transferring content such as video from one device to another are known.
  • physical layer interface standards such as HDMI (High-Definition Multimedia Interface) and MHL (Mobile High-definition Link), and network layer industry standards such as DLNA (Digital Living Network Alliance).
  • Miracast is known as a one-to-one video transmission technique using Wi-Fi wireless communication.
  • a user selects one of a plurality of interfaces in order to view content stored in a source device such as a recorder on a sink device such as a TV.
  • the interface can be selected in advance in the sink device.
  • the source device transmits the decrypted content to the sink device, and the sink device outputs the decrypted content to a display unit such as a liquid crystal panel.
  • the source device transmits the encoded content (compressed content) to the sink device, and the sink device decodes the compressed content and outputs it to the display unit.
  • the content processing procedure differs depending on the selected interface.
  • the user manually changes from DLNA to MHL.
  • the user causes the source device to start decrypting the content, for example, by starting up a media player.
  • the user matches the playback time of the content distributed via MHL with the playback time of the content distributed via DLNA before the interface is changed.
  • the user has to perform many operations, which is inconvenient.
  • the problem to be solved by the present invention is to provide an information processing apparatus and information processing method capable of smoothly transitioning from one interface to another while content is being reproduced.
  • An information processing apparatus is an information processing apparatus that receives distribution of content from a source device, and includes a first communication unit that receives compressed content obtained by encoding the content, and reproduction content reproduced by the source device.
  • a second communication unit to receive; a reproduction unit that decodes the compressed content to generate uncompressed content, and reproduces the content; and a reproduction content reproduced by the reproduction unit, or the second communication unit
  • an output unit that outputs the playback content received in step S3
  • a control unit that selects the first communication unit or the second communication unit based on a predetermined condition.
  • control unit When the control unit selects the second communication unit instead of the first communication unit receiving the compressed content, the control unit displays file information of the content being played back by the playback unit And switching playback time information including a predetermined playback time is transmitted to the source device, and the second communication unit receives playback content after the playback time indicated by the switching playback time information from the source device, The output unit outputs the playback content received by the second communication unit.
  • FIG. 1 is a schematic block diagram of a sink device 1 according to a first embodiment of the present invention. It is a schematic block diagram of the source device 2 which concerns on the 1st Embodiment of this invention. It is a flowchart for demonstrating the information processing method by the sink device 1 in the case of switching from DLNA to MHL. It is a flowchart for demonstrating the information processing method by the source device 2 in the case of switching from DLNA to MHL. 10 is a flowchart for explaining an information processing method by the sink device 1 when switching from MHL to DLNA.
  • (A) And (b) is a figure for demonstrating the example of the reproduction time which switching reproduction
  • FIG. 1 shows a schematic configuration of an information processing system according to an embodiment of the present invention.
  • This information processing system includes a sink device 1 and a source device 2.
  • the sink device 1 and the source device 2 are communicably connected by wired connection and / or wireless connection using a cable or the like.
  • the sink device 1 and the source device 2 may be connected to each other via a network.
  • the network may be either a wired line or a wireless line, and the type and form of the line are not limited.
  • the sink device 1 is an information processing device that receives distribution of content such as video and music from the source device 2.
  • the sink device 1 is, for example, a television, and may be a mobile electronic device such as a mobile phone, a smartphone, or a tablet terminal.
  • the source device 2 is an information processing device that distributes content to the sink device 1.
  • the source device 2 is, for example, a recording / playback device including a storage device such as a hard disk drive (HDD), or may be a content server connected to the sink device 1 via a network.
  • HDD hard disk drive
  • FIG. 2 is a schematic block diagram of the sink device 1
  • FIG. 3 is a schematic block diagram of the source device 2.
  • the sink device 1 includes a DLNA communication unit 11, an MHL communication unit 12, a playback unit 13, an output unit 14, a control unit 15, a buffer memory 16, and a storage unit 17. ing.
  • the DLNA communication unit 11 performs communication (DLNA communication) based on the DLNA standard with the source device 2 and receives the compressed content obtained by encoding the content.
  • the DLNA communication unit 11 acquires an address (identifier) of the content stored in the source device 2 by a predetermined method
  • the DLNA communication unit 11 transmits a content request (HTTP GET) specifying the address to the source device 2.
  • This content request may specify a predetermined playback position (playback time) in the content.
  • the source device 2 transmits the content to the sink device 1 in response to the content request, and the sink device 1 decrypts the received content and reproduces it.
  • DLNA communication is performed via, for example, a wired LAN or a wireless LAN.
  • DLNA communication is performed on the IP layer.
  • the MHL communication unit 12 performs wired communication (MHL communication) conforming to the MHL standard with the source device 2 and receives playback content played back by the source device 2.
  • MHL communication wired communication
  • MHL communication is performed not on a physical interface of a wired LAN or a wireless LAN, but on a physical interface conforming to the MHL standard.
  • the MHL communication unit 12 receives non-compressed content.
  • the MHL communication unit 12 may compress the compressed content. May be received.
  • the playback unit 13 decrypts the compressed content to generate uncompressed content, and plays back the content.
  • the playback unit 13 may be configured as hardware or software (playback application).
  • the output unit 14 outputs the playback content played back by the playback unit 13 or the playback content received by the MHL communication unit 12.
  • the output unit 14 is, for example, a display unit (liquid crystal panel or the like) included in the sink device 1 or a unit that outputs an image to a display unit (liquid crystal panel or the like) outside the sink device 1.
  • the output unit 14 may be audio output means such as a speaker.
  • the control unit 15 selects the DLNA communication unit 11 or the MHL communication unit 12 based on a predetermined condition.
  • the predetermined condition is based on, for example, a communication state between the sink device 1 and the source device 2, a connection state of the MHL cable, a user policy, and the like.
  • the user policy is priority information preset in the sink device 1 by the user, and includes, for example, reproduction content quality priority, wireless connection priority, or low delay priority.
  • the control unit 15 accesses the storage unit 17 and acquires setting information such as a user policy.
  • the control unit 15 exchanges information with the source device 2 via the DLNA communication unit 11 and the MHL communication unit 12.
  • the control unit 15 may exchange information with the source device 2 by the communication unit.
  • the control unit 15 controls the playback unit 13 to perform operations such as playback and stop of the content.
  • the control unit 15 acquires the file information of the content being played back and the current playback time (current playback time) from the playback unit 13.
  • the current playback time is the current playback time of content, in other words, the time indicating how far the content has been played.
  • the control unit 15 accesses the buffer memory 16 and acquires the data amount accumulated in the buffer memory 16. This data amount is used to calculate the remaining reproducible time.
  • the remaining reproducible time is the reproducible time by the compressed content stored in the buffer memory 16. More specifically, the remaining reproducible time is a time obtained by subtracting the time required for decoding from the playback time of the content obtained by decoding the compressed content stored in the buffer memory 16.
  • the buffer memory 16 temporarily stores the compressed content until the compressed content received by the DLNA communication unit 11 is decrypted by the reproduction unit 13.
  • the storage unit 17 stores setting information such as the aforementioned user policy.
  • the storage unit 17 preferably has a nonvolatile memory.
  • the source device 2 includes a DLNA communication unit 21, an MHL communication unit 22, a playback unit 23, a storage unit 24, and a control unit 25.
  • the DLNA communication unit 21 communicates with the sink device 1 in conformity with the DLNA standard, and transmits the compressed content encoded content. In other words, the DLNA communication unit 21 performs streaming transmission of the compressed content file data stored in the file format.
  • the MHL communication unit 22 performs wired communication based on the MHL standard with the sink device 1 and transmits the playback content played back by the playback unit 23.
  • the playback unit 23 decodes the compressed content stored in the storage unit 24 to generate uncompressed content, and plays back the content.
  • the playback unit 23 may be configured as hardware or software (playback application).
  • the storage unit 24 has a storage device such as a hard disk drive (HDD) and stores compressed content obtained by compressing the content.
  • HDD hard disk drive
  • the control unit 25 exchanges information with the sink device 1 via the DLNA communication unit 21 and the MHL communication unit 22.
  • the control unit 25 may exchange information with the sink device 1 using the communication unit.
  • the control unit 25 controls the playback unit 23 to perform operations such as playback and stop of the content.
  • the control unit 25 acquires the file information of the content being reproduced and the current reproduction time from the reproduction unit 23.
  • the storage unit 24 may store not only compressed content but also uncompressed content.
  • the MHL communication unit 22 reads the uncompressed content from the storage unit 24 and transmits it to the sink device 1.
  • the DLNA communication unit 21 receives the compressed content via an encoder (not shown) that encodes the uncompressed content, and transmits the compressed content to the sink device 1.
  • FIG. 4 is a flowchart for explaining the information processing method by the sink device 1
  • FIG. 5 is a flowchart for explaining the information processing method by the source device 2.
  • the sink device 1 receives distribution of content from the source device 2 via DLNA.
  • control unit 15 of the sink device 1 selects the MHL communication unit 12 instead of the DLNA communication unit 11 based on a predetermined condition (step S11). For example, when it is confirmed that the source device 2 is connected with the MHL, the control unit 15 selects the MHL communication unit 12 instead of the DLNA communication unit 11.
  • the DLNA connection is a connection at the IP layer, whereas the MHL connection is a connection at the physical layer. For this reason, the counterpart device connected via DLNA may be different from the counterpart device connected via MHL. For this reason, after confirming the MHL connection, the control unit 15 preferably confirms that the device connected via the MHL is the same as the device connected via the DLNA by communicating with the counterpart device.
  • control unit 15 of the sink device 1 transmits the file information of the content being played back by the playback unit 13 and the switching playback time information to the source device 2 via the DLNA communication unit 11 or the MHL communication unit 12 ( Step S12).
  • the file information is information for identifying the content being played back, for example, the file name of the content being played back.
  • the switching reproduction time information is information indicating a predetermined reproduction time for executing switching from DLNA to MHL, for example, information indicating the current reproduction time of the content being reproduced by the reproduction unit 13.
  • the switching reproduction time information is preferably information indicating a future reproduction time from the viewpoint of suppressing a time lag at the time of switching.
  • the control unit 15 transmits the switching playback time information including the time information indicating the playback position in the content and the time information indicating the actual time of the communication switching timing. .
  • any time can be set as the switching playback time information. For example, when the playback position 1 hour 40 minutes 36 seconds 00 in the content is set as the switching playback time, 15:40:36 in real time. 00 is set as the actual time of the switching timing. Then, the sink device 1 transmits the switching reproduction time and the actual time of the switching timing to the source device 2.
  • time information indicating the communication switching timing information indicating the time (for example, 3 seconds) from when the source device 2 receives the switching reproduction time information to when the communication switching is actually performed may be transmitted to the source device 2. Good.
  • the information indicating the playback position in the content may be a frame number criterion or a byte number criterion in addition to the time criterion as described above. Since the source device 2 does not decode the content when transmitting the content by DLNA communication, the source device 2 may not be able to recognize the current playback time and the actual switching timing of the content displayed on the sink device 1. However, the source device 2 can recognize the actual time of the switching timing by receiving the switching reproduction time information specifying the actual time of the switching timing.
  • control unit 25 of the source device 2 receives file information and switching reproduction time information from the sink device 1 (step S21). And the control part 25 determines whether the received information is normal (step S22). If the received information is normal (S22: Yes), the process proceeds to step S23. If not (S22: No), the process proceeds to step S24. For example, when the content having the file name indicated by the received file information is not stored in the storage unit 24 of the source device 2, the control unit 25 determines that the received information is not normal.
  • the source device 2 transmits an affirmative response to the sink device 1 (step S23).
  • the source device 2 requests the sink device 1 to transmit information necessary for content reproduction (step S24). For example, if the content to be played cannot be uniquely determined by the file name alone, additional information is requested. Additional information includes information related to audio language (Japanese, English, German, etc.) and video angle.
  • the source device 2 transmits an affirmative response to the sink device 1 (step S23).
  • step S14 determines whether or not automatic transition is set. Specifically, the control unit 15 reads setting information such as a user policy from the storage unit 17 and determines whether or not automatic transition from DLNA to MHL is permitted. When the automatic transition is set (S14: Yes), the process proceeds to step S15. Otherwise (S14: No), the process proceeds to step S16.
  • step S15 When the automatic transition is set, the control unit 15 of the sink device 1 requests the source device 2 to transmit the playback content via the MHL (step S15). On the other hand, if automatic transition is not set, the output unit 14 of the sink device 1 displays a dialog requesting authentication from the user (step S16). If the user authenticates the transition from DLNA to MHL (step S17: Yes), the process proceeds to step S15.
  • the control unit 25 of the source device 2 determines whether or not a playback content transmission request has been received from the sink device 1 (step S26). When the transmission request is received (S26: Yes), the source device 2 transmits the playback content after the playback time specified by the switching playback time information to the sink device 1 (step S27).
  • control unit 25 controls the playback unit 23 so that content after the specified playback time is read from the storage unit 24, decoded, and played back, and the playback content played back by the playback unit 23 is synchronized.
  • the MHL communication unit 22 is controlled to transmit to the apparatus 1.
  • the switching playback time information transmitted from the sink device 1 designates a future playback time, that is, the first playback time information indicating the playback position in the content and the communication in real time.
  • the control unit 25 of the source device 2 sinks the playback content from the playback position indicated by the first time information in the real time indicated by the second time information. 1 to send.
  • the control unit 25 activates the software to cause the compressed content to be decrypted and played back. Further, the software may be activated in advance (for example, in step S21 or step S23). As a result, it is possible to avoid the influence of the delay associated with the software activation time.
  • this system may be configured as follows.
  • the source device 2 starts the reproduction of the content and the transmission of the content through the switching destination communication path before the reproduction time and the switching time indicated by the switching reproduction time information.
  • the sink device 1 continues to display the video via the DLNA even after starting to receive the playback content from the source device 2. Thereafter, when the playback time indicated by the switching playback time information is reached, the sink device 1 may switch to the video via the MHL.
  • the MHL communication unit 12 of the sink device 1 outputs the received reproduction content while receiving the reproduction content after the reproduction time indicated by the switching reproduction time information from the source device 2 (step S18).
  • step S18 the sink device 1 executes input switching in order to display the video of the playback content input from the external input terminal of the MHL communication unit 12.
  • Various timings such as a timing according to time information indicating the communication switching timing transmitted in step S12 and a timing time when the current reproduction time of the content is transmitted in step S12 can be considered as the timing of this input switching.
  • the sink device 1 can smoothly transition from DLNA to MHL while the content distributed via DLNA is being played back.
  • FIG. 6A and 6B are flowcharts for explaining the information processing method by the sink device 1
  • FIG. 7 is a flowchart for explaining the information processing method by the source device 2.
  • the control unit 15 of the sink device 1 selects the DLNA communication unit 11 instead of the MHL communication unit 12 based on a predetermined condition (step S31). For example, when the user removes the MHL connection cable, the control unit 15 selects the DLNA communication unit 11 instead of the MHL communication unit 12 according to, for example, an input switching operation by the user.
  • control unit 15 of the sink device 1 transmits a communication switching instruction from communication by the MHL communication unit 12 to communication by the DLNA communication unit 11 to the source device 2 via the DLNA communication unit 11 or the MHL communication unit 12. (Step S32).
  • the source device 2 When the source device 2 receives the communication switching instruction (S51: Yes), the source device 2 transmits the file information of the content being reproduced and the switching reproduction time information to the sink device 1 (step S52).
  • the switching reproduction time information here may be information indicating the current reproduction time or information indicating the future reproduction time as described above.
  • the source device 2 may transmit future reproduction time information and time information indicating the actual time of switching timing. Since the sink device 1 receives the decoded content via the MHL, it cannot recognize the playback time (playback position) of the content displayed by the sink device 1. Therefore, the sink device 1 may not be able to recognize the switching timing even if it receives only the content playback time as the switching playback time information. However, the sink device 1 can recognize the switching timing by receiving the time information indicating the actual time of the switching timing.
  • control unit 15 of the sink device 1 receives the file information of the content being played back on the source device 2 and the switching playback time information from the source device 2 via the DLNA communication unit 11 or the MHL communication unit 12 (steps). S33).
  • step S34 determines whether or not the received information is normal (step S34). If the received information is normal (S34: Yes), the process proceeds to step S35, and if not (S34: No), the process proceeds to step S36.
  • control unit 15 of the sink device 1 refers to the setting information stored in the storage unit 17 to determine whether or not the automatic transition setting has been made (step) S35). If the automatic transition is set (S35: Yes), the process proceeds to step S40. If not (S35: No), the process proceeds to step S38.
  • the sink device 1 requests the source device 2 to transmit information necessary for content reproduction (step S36). For example, if the content to be played cannot be uniquely determined by the file name alone, additional information is requested. Additional information includes information related to audio language (Japanese, English, German, etc.) and video angle.
  • the process proceeds to step S35.
  • step S35 the output unit 14 of the sink device 1 displays a dialog requesting authentication from the user (step S38). If the user authenticates the transition from MHL to DLNA (step S39: Yes), the process proceeds to step S40.
  • control unit 15 of the sink device 1 requests the source device 2 to transmit the compressed content via DLNA (step S40).
  • a request designating the playback time (playback position) of the content is transmitted.
  • the control unit 25 of the source device 2 determines whether or not a compressed content transmission request has been received from the sink device 1 (step S53). When the transmission request is received (S53: Yes), the source device 2 transmits the compressed content after the reproduction time specified by the switching reproduction time information to the sink device 1 (step S54).
  • control unit 25 controls the DLNA communication unit 21 so that the compressed content after the designated reproduction time is read from the storage unit 24 and transmitted to the sink device 1.
  • the reproduction unit 13 reproduces the content generated by decoding the received compressed content.
  • the output unit 14 outputs the playback content played back by the playback unit 13 (step S41).
  • the sink device 1 When switching from MHL to DLNA, the sink device 1 starts up a playback application for playing back content received via DLNA and prepares for DLNA playback. Thereafter, the sink device 1 starts reproduction of the content and performs input switching to switch from the screen for the external input terminal of the MHL communication unit 12 to the screen for reproducing the content received via the DLNA.
  • the input switching timing may be various timings such as timing indicated by time information indicating the actual time of switching timing.
  • the sink device 1 can smoothly transition from the MHL to the DLNA while the content distributed via the MHL is being reproduced.
  • the first embodiment it is possible to smoothly transition from one interface to another while the content is being reproduced. As a result, the user can enjoy a seamless content distribution service via a plurality of interfaces, and the user's satisfaction can be improved.
  • the sink device 1 may include an HDMI communication unit that performs wired communication in conformity with the HDMI standard with the source device 2 instead of the MHL communication unit 12.
  • the sink device 1 may include a Miracast communication unit that performs wireless communication based on the Miracast standard with the source device 2 instead of the MHL communication unit 12.
  • a Miracast communication unit that performs wireless communication based on the Miracast standard with the source device 2 instead of the MHL communication unit 12.
  • switching playback time information is not limited to information indicating the current playback time of the content being played back. This will be described with reference to FIGS. 8A and 8B.
  • the switching playback time information includes a playback time (modified playback time) t2 obtained by adding the remaining playback time (Buf) to the current playback time t1 of the content being played back by the playback unit 13. It may be the information shown.
  • the sink device 1 can be prevented from receiving duplicate content information, and the buffer memory 16 can be used effectively.
  • the switching reproduction time information may be information indicating a reproduction time t3 obtained by subtracting the transition time from the above-described modified reproduction time t2.
  • the transition time refers to the time required to change the communication unit, from when the transition-destination communication unit (for example, the MHL communication unit 12) is selected by the control unit 15 until the playback content can be received. Of time. As a result, it is possible to prevent the occurrence of frame dropping or the like of the video accompanying the transition of the communication unit.
  • the remaining playable time and / or transition time may be transmitted to the counterpart device separately from the switching playback time information indicating the current playback time, and the counterpart device may obtain the times t2 and t3.
  • the switching reproduction time information may indicate a time represented by PTS (Presentation Time Stamp) information of the compressed content stored in the buffer memory 16. Further, the switching reproduction time information may indicate a reproduction time obtained by subtracting the above transition time from the time represented by the PTS information.
  • PTS Presentation Time Stamp
  • the decoding device changes due to the transition of the interface. That is, when switching from DLNA to MHL / HDMI, the decoding device changes from the sink device 2 to the source device 1, and when switching from MHL / HDMI to DLNA, the decoding device changes from the source device 1 to the sink device 2.
  • the decoding device remains the source device before and after the interface transition.
  • the information processing system includes a sink device 1A and a source device 2A.
  • FIG. 9 is a schematic block diagram of the sink device 1A
  • FIG. 10 is a schematic block diagram of the source device 2A.
  • the sink device 1A includes an MHL communication unit 12, an output unit 14, a control unit 15, a storage unit 17, and a Miracast communication unit 18, as shown in FIG.
  • the Miracast communication unit 18 wirelessly receives the playback content played back by the source device 2A.
  • the Miracast communication unit 18 performs communication on a wired LAN or wireless LAN interface, for example. Communication by the Miracast communication unit 18 is executed on the IP layer.
  • the sink device 1A may further include the DLNA communication unit 11, the reproduction unit 13, and the buffer memory described in the first embodiment in order to support DLNA in addition to MHL and Miracast.
  • the control unit 15 exchanges information with the source device 2A via the MHL communication unit 12 and the Miracast communication unit 18.
  • the control unit 15 uses the communication unit to exchange information with the source device 2A. You may exchange.
  • the source device 2A includes an MHL communication unit 22, a playback unit 23, a storage unit 24, a control unit 25, and a Miracast communication unit 28, as shown in FIG.
  • the Miracast communication unit 28 wirelessly transmits the playback content played back by the playback unit 23 to the sink device 1A.
  • the source device 2A may further include the DLNA communication unit 21 described in the first embodiment in order to support DLNA in addition to MHL and Miracast.
  • the control unit 25 exchanges information with the sink device 1A via the MHL communication unit 22 and the Miracast communication unit 28.
  • the control unit 25 uses the communication unit to exchange information with the sink device 1A. You may exchange.
  • FIG. 11 is a flowchart for explaining the information processing method by the sink device 1A
  • FIG. 12 is a flowchart for explaining the information processing method by the source device 2A.
  • the control unit 15 of the sink device 1A selects the Miracast communication unit 18 instead of the MHL communication unit 12 based on a predetermined condition (step S61). For example, when the user performs an input switching operation and removes the MHL connection cable, the control unit 15 selects the Miracast communication unit 18 instead of the MHL communication unit 12.
  • control unit 15 of the sink device 1A determines whether or not automatic transition is set (step S62). Specifically, the control unit 15 reads setting information such as a user policy from the storage unit 17 and determines whether automatic transition from MHL to Miracast is permitted. If automatic transition is set (S62: Yes), the process proceeds to step S63, and if not (S62: No), the process proceeds to step S64.
  • the control unit 15 of the sink device 1A uses the MHL communication unit 12 or the Miracast communication unit 18 as a source for a communication switching instruction from communication by the MHL communication unit 12 to communication by the Miracast communication unit 18. It transmits to the apparatus 2A (step S63).
  • step S64 the output unit 14 of the sink device 1A displays a dialog requesting authentication from the user (step S64). If the user authenticates the transition from MHL to Miracast (step S65: Yes), the process proceeds to step S63.
  • control unit 15 of the sink device 1A After transmitting the communication switching instruction, the control unit 15 of the sink device 1A performs input switching so that the playback content can be received via the Miracast communication unit 18 (step S66).
  • the source device 2A When receiving the communication switching instruction (S71: Yes), the source device 2A transmits the reproduction content to the sink device 1A via the Miracast 28 (step S72).
  • the Miracast communication unit 18 of the sink device 1A outputs the received playback content while receiving the playback content from the source device 2A (step S67).
  • the sink device 1A can smoothly transition from the MHL to the Miracast while the content distributed via the MHL is being played back.
  • the control unit 15 of the sink device 1A selects the MHL communication unit 12 instead of the Miracast communication unit 18 that receives the playback content
  • the control unit 15 starts communication from the Miracast communication unit 18.
  • a communication switching instruction for communication by the MHL communication unit 12 is transmitted to the source device 2A.
  • the source device 2A transmits the reproduction content to the sink device 1A via the MHL communication unit 12.
  • the MHL communication unit 12 of the sink device 1A receives the playback content from the source device 2A, and the output unit 14 outputs the playback content received by the MHL communication unit 12.
  • control unit 15 of the sink device 1A may transmit time information indicating the communication switching timing to the source device 2A together with the communication switching instruction.
  • the control unit 15 transmits, for example, information indicating 3 seconds to the source device 2A as time information indicating the communication switching timing.
  • the source device 2A transmits the playback content via the transition destination communication unit 3 seconds after receiving the communication switching instruction.
  • the control unit 15 may transmit information indicating a predetermined time (for example, 15:40:35) to the source device 2A as time information indicating the communication switching timing.
  • the second embodiment it is possible to smoothly transition from one interface to another while the content is being reproduced. As a result, the user can enjoy a seamless content distribution service via a plurality of interfaces, and the satisfaction of the user can be improved.
  • At least a part of the information processing system described in the above-described embodiment may be configured by hardware or software.
  • a program that realizes at least a part of the functions of the information processing system may be stored in a recording medium such as a flexible disk or a CD-ROM, and read and executed by a computer.
  • the recording medium is not limited to a removable medium such as a magnetic disk or an optical disk, but may be a fixed recording medium such as a hard disk device or a memory.
  • a program that realizes at least a part of the functions of the information processing system may be distributed via a communication line (including wireless communication) such as the Internet. Further, the program may be distributed in a state where the program is encrypted, modulated or compressed, and stored in a recording medium via a wired line such as the Internet or a wireless line.
  • a communication line including wireless communication
  • the program may be distributed in a state where the program is encrypted, modulated or compressed, and stored in a recording medium via a wired line such as the Internet or a wireless line.
  • An information processing device (1) that receives content distribution from a source device (2), A first communication unit (11) that receives compressed content encoded content; A second communication unit (12) for receiving playback content played back by the source device (2); A playback unit (13) for decrypting the compressed content to generate uncompressed content and playing back the content; An output unit (14) for outputting the reproduction content reproduced by the reproduction unit (13) or the reproduction content received by the second communication unit (12); A control unit (15) for selecting the first communication unit (11) or the second communication unit (12) based on a predetermined condition; With When the control unit (15) selects the second communication unit (12) instead of the first communication unit (11) receiving the compressed content, The control unit (15) transmits the file information of the content being played back by the playback unit (13) and the switching playback time information including a predetermined playback time to the source device (2), The second communication unit (12) receives the playback content after the playback time indicated by the switching playback time information from the source device (2), The output unit (14) is an information processing device (1)
  • Appendix 2 The information processing apparatus according to appendix 1, wherein the control unit (15) transmits the switching reproduction time information further including time information indicating communication switching timing to the source device (2).
  • the switching playback time information indicates a modified playback time obtained by adding the remaining playback time by the compressed content stored in the buffer memory (16) to the current playback time of the content being played back by the playback unit (13).
  • the information processing apparatus (1) according to appendix 1.
  • the switching playback time information is obtained by subtracting, from the modified playback time, a transition time from when the second communication unit (12) is selected by the control unit (15) until the playback content can be received.
  • the compressed content is compressed by the MPEG method, A buffer memory (16) for temporarily storing the compressed content received by the first communication unit (11) until it is decoded by the playback unit (13);
  • the information processing apparatus (1) according to appendix 1, wherein the switching reproduction time information indicates a time represented by PTS (Presentation Time Stamp) information of the compressed content stored in the buffer memory (16).
  • PTS Presentation Time Stamp
  • the switching reproduction time information is a time that the PTS information represents a transition time from when the second communication unit (12) is selected by the control unit (15) until the reproduction content can be received.
  • the information processing apparatus (1) according to appendix 6, showing a reproduction time subtracted from the information.
  • the control unit (15) selects the first communication unit (11) instead of the second communication unit (12) receiving the reproduction content, The control unit (15) transmits a communication switching instruction from communication by the second communication unit (12) to communication by the first communication unit (11) to the source device (2), The control unit (15) receives the file information of the content being played on the source device (2) and other switching playback time information from the source device (2), The first communication unit (11) receives the compressed content after the reproduction time indicated by the different switching reproduction time information from the source device (2), The reproduction unit (13) reproduces content generated by decoding the compressed content, The output unit (14) outputs the playback content played back by the playback unit (13).
  • the information processing apparatus (1) according to appendix 1.
  • An information processing device (1A) that receives content distribution from a source device (2A), A first communication unit (12) that wire-receives playback content played back by the source device (2A); A second communication unit (18) for wirelessly receiving the playback content played by the source device (2A); An output unit (14) for outputting the reproduction content; A control unit (15) for selecting the first communication unit (12) or the second communication unit (18) based on a predetermined condition; With When the control unit (15) selects the second communication unit (18) instead of the first communication unit (12) receiving the reproduction content, The control unit (15) transmits a first communication switching instruction from communication by the first communication unit (12) to communication by the second communication unit (18) to the source device (2A), The second communication unit (18) receives the playback content from the source device (2A), The output unit (14) is an information processing apparatus (1A) that outputs the playback content received by the second communication unit (18).
  • control unit (15) selects the first communication unit (12) instead of the second communication unit (18) receiving the reproduction content
  • the control unit (15) transmits, to the source device (2A), a second communication switching instruction from communication by the second communication unit (18) to communication by the first communication unit (12),
  • the first communication unit (12) receives the playback content from the source device (2A),
  • the information processing apparatus (1A) according to appendix 9, wherein the output unit (14) outputs the playback content received by the first communication unit (12).
  • Appendix 12 The information processing apparatus (1A) according to appendix 11, wherein the control unit (15) transmits time information indicating communication switching timing to the source apparatus (2A) together with the second communication switching instruction.
  • An information processing method comprising:
  • the first communication unit (12) receives the reproduction content reproduced by the source device (2A) by wire, and the second communication unit (18) receives the reproduction content reproduced by the source device (2A).
  • the first communication unit (18) wirelessly receives the playback content played by the source device (2A), and the second communication unit (12) receives the playback content played by the source device (2A). 15. The information processing method according to appendix 14, wherein wire reception is performed.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Le problème décrit par l'invention est de pourvoir à un dispositif de traitement d'informations et un procédé de traitement d'informations qui permettent une transition lisse d'une interface à une autre interface pendant que du contenu est en cours de lecture. La solution de l'invention porte sur un dispositif de traitement d'informations qui comprend, dans un mode de réalisation, une première unité de communication qui reçoit du contenu compressé, une seconde unité de communication qui reçoit du contenu de lecture, une unité de lecture qui décode et lit le contenu compressé, une unité de sortie qui délivre le contenu de lecture, et une unité de commande qui sélectionne soit la première unité de communication soit la seconde unité de communication sur la base d'une condition prescrite. Quand l'unité de commande sélectionne la seconde unité de communication pour prendre la suite de la première unité de communication, l'unité de commande transmet, à un dispositif source, des informations de position de lecture après permutation qui contiennent des informations de fichier pour du contenu actuellement en train d'être lu par l'unité de lecture et une position de lecture prescrite ; la seconde unité de communication reçoit, en provenance du dispositif source susmentionné, du contenu de lecture subséquent à la position de lecture indiquée par les informations de position de lecture après permutation susmentionnées ; et l'unité de sortie délivre ledit contenu de lecture.
PCT/JP2013/080933 2013-11-15 2013-11-15 Dispositif de traitement d'informations et procédé de traitement d'informations WO2015072020A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306052A (ja) * 2006-05-08 2007-11-22 Sony Corp 出力装置、入力装置、伝送システム及び伝送方法
JP2009200788A (ja) * 2008-02-21 2009-09-03 Canon Inc 受信装置
JP2011045021A (ja) * 2009-08-24 2011-03-03 Sony Corp 伝送システム、再生装置、伝送方法及びプログラム
JP2012186577A (ja) * 2011-03-04 2012-09-27 Fujitsu Ltd データ配信システム，ノード，及びデータ配信方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306052A (ja) * 2006-05-08 2007-11-22 Sony Corp 出力装置、入力装置、伝送システム及び伝送方法
JP2009200788A (ja) * 2008-02-21 2009-09-03 Canon Inc 受信装置
JP2011045021A (ja) * 2009-08-24 2011-03-03 Sony Corp 伝送システム、再生装置、伝送方法及びプログラム
JP2012186577A (ja) * 2011-03-04 2012-09-27 Fujitsu Ltd データ配信システム，ノード，及びデータ配信方法

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