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    Endpoint proximity pairing using acoustic spread spectrum token exchange and ranging information
    41.
    发明授权
    Endpoint proximity pairing using acoustic spread spectrum token exchange and ranging information 有权

    公开(公告)号：US10141973B1

    公开(公告)日：2018-11-27

    申请号：US15631679

    申请日：2017-06-23

    Applicant: Cisco Technology, Inc.

    Inventor： Michael A. Ramalho ,  Mihailo Zilovic

    IPC: H04B1/709 ,  H04R1/34 ,  H04N21/422 ,  H04H20/30

    Abstract: A first endpoint generates an acoustic spread spectrum signal including a pilot sequence and a data sequence representing a token synchronized to the pilot sequence, transmits the acoustic spread spectrum signal, and records a transmit time at which the acoustic spread spectrum signal is transmitted. A receive time at which a second endpoint received the acoustic spread spectrum signal transmitted by the first endpoint is received from the second endpoint along with an indication of a second token as recovered from the received acoustic spread spectrum signal by the second endpoint. A separation distance between the first endpoint and the second endpoint is computed based on a time difference between the transmit time and the receive time. The first endpoint is paired with the second endpoint when the token matches the second token and the computed distance is less than a threshold distance.

    Preserving synchronized playout of auxiliary audio transmission
    46.
    发明授权
    Preserving synchronized playout of auxiliary audio transmission 有权
    保留辅助音频传输的同步播放

    公开(公告)号：US09426335B2

    公开(公告)日：2016-08-23

    申请号：US14155081

    申请日：2014-01-14

    Applicant: Cisco Technology, Inc.

    Inventor： Ali C. Begen ,  Tankut Akgul ,  Michael A. Ramalho ,  David R. Oran ,  William C. Ver Steeg

    IPC: H04N5/04 ,  H04N21/472 ,  H04N5/931 ,  H04N5/932 ,  H04N7/087 ,  G06F15/16

    CPC classification number: H04N5/04 ,  G06F15/16 ,  H04N5/931 ,  H04N5/932 ,  H04N7/087 ,  H04N21/47202

    Abstract: In one method embodiment, providing a multiplex of compressed versions of a first video stream and a first audio stream, each corresponding to an audiovisual (A/V) program, the first video stream and the first audio stream each corresponding to a first playout rate and un-synchronized with each other for an initial playout portion; and providing a compressed version of a second audio stream, the second audio stream corresponding to a pitch-preserving, second playout rate different than the first playout rate, the second audio stream synchronized to the initial playout portion of the first video stream when the first video stream is played out at the second playout rate, the first audio stream replaceable by the second audio stream for the initial playout portion.

    Abstract translation: 在一个方法实施例中，提供第一视频流和第一音频流的压缩版本的多路复用，每个对应于视听（A / V）程序，第一视频流和第一音频流，每个对应于第一播放速率 并且对于初始播放部分彼此不同步; 以及提供第二音频流的压缩版本，所述第二音频流对应于与所述第一播放速率不同的音高保持的第二播放速率，所述第二音频流与所述第一视频流的初始播出部分同步，当所述第一音频流 视频流以第二播放速率播放，第一音频流可由用于初始播出部分的第二音频流替换。

    OBTAINING REPLAY OF AUDIO DURING A CONFERENCE SESSION
    47.
    发明申请
    OBTAINING REPLAY OF AUDIO DURING A CONFERENCE SESSION 有权
    在会议期间获得音频重复

    公开(公告)号：US20160057390A1

    公开(公告)日：2016-02-25

    申请号：US14464038

    申请日：2014-08-20

    Applicant: Cisco Technology, Inc.

    Inventor： Michael A. Ramalho

    IPC: H04N7/15 ,  H04L29/06

    CPC classification number: H04N7/155 ,  H04L12/1822 ,  H04L12/1831 ,  H04L65/4023 ,  H04L65/403 ,  H04L65/602 ,  H04L65/608 ,  H04L65/80

    Abstract: Presented herein are techniques for receiving media at a participant device for a conference session. The media may be transmitted to the participant device using a first transport mechanism. A command is received from a user of a participant device in a conference session to playback a portion of the conference session. A request is sent to the conference server to retransmit a recording of the portion of the conference session requested for playback. Data is received for the recording of the portion of the conference session transmitted from the conference server using a second transport mechanism, wherein the second transport mechanism is a higher reliability transport mechanism than the first transport mechanism.

    Abstract translation: 这里呈现的是用于在会议会话的参与者设备处接收媒体的技术。 可以使用第一传送机制将媒体发送到参与者设备。 在会议会话中从参与者设备的用户接收命令以回放会议会话的一部分。 向会议服务器发送请求以重发会议请求重放的部分的记录。 接收用于记录从会议服务器使用第二传送机构发送的会议会话的部分的数据，其中第二传送机构是比第一传送机构更高的可靠性传输机制。

    PRESERVING SYNCHRONIZED PLAYOUT OF AUXILIARY AUDIO TRANSMISSION
    48.
    发明申请
    PRESERVING SYNCHRONIZED PLAYOUT OF AUXILIARY AUDIO TRANSMISSION 审中-公开
    保留同步音频传输的同步播放

    公开(公告)号：US20140126653A1

    公开(公告)日：2014-05-08

    申请号：US14155081

    申请日：2014-01-14

    Applicant: Cisco Technology, Inc.

    Inventor： Ali C. Begen ,  Tankut Akgul ,  Michael A. Ramalho ,  David R. Oran ,  William C. Ver Steeg

    IPC: H04N5/04

    CPC classification number: H04N5/04 ,  G06F15/16 ,  H04N5/931 ,  H04N5/932 ,  H04N7/087 ,  H04N21/47202

    Abstract: In one method embodiment, providing a multiplex of compressed versions of a first video stream and a first audio stream, each corresponding to an audiovisual (A/V) program, the first video stream and the first audio stream each corresponding to a first playout rate and un-synchronized with each other for an initial playout portion; and providing a compressed version of a second audio stream, the second audio stream corresponding to a pitch-preserving, second playout rate different than the first playout rate, the second audio stream synchronized to the initial playout portion of the first video stream when the first video stream is played out at the second playout rate, the first audio stream replaceable by the second audio stream for the initial playout portion.

    Abstract translation: 在一个方法实施例中，提供第一视频流和第一音频流的压缩版本的多路复用，每个对应于视听（A / V）程序，第一视频流和第一音频流，每个对应于第一播放速率 并且对于初始播放部分彼此不同步; 以及提供第二音频流的压缩版本，所述第二音频流对应于与所述第一播放速率不同的音高保持的第二播放速率，所述第二音频流与所述第一视频流的初始播出部分同步，当所述第一音频流 视频流以第二播放速率播放，第一音频流可由用于初始播出部分的第二音频流替换。

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