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41.发明授权公开(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.
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42.发明授权公开(公告)号：US10003434B2
公开(公告)日：2018-06-19
申请号：US15094475
申请日：2016-04-08
Applicant: Cisco Technology, Inc.
Inventor： Michael A. Ramalho , Dan Tan , Geir A. Sandbakken , Paul G. Bright-Thomas , Greg H. Hakonsen
IPC: H03M13/00 , H04L1/00 , H04L12/911
CPC classification number: H04L1/0041 , H04L1/0057 , H04L1/0083 , H04L47/827
Abstract: Large source data packets having large packet sizes and small source data packets having small packet sizes that are smaller than the large packet sizes are received. The small source data packets and the large source data packets are sent to a receiving device without forward error correction (FEC). The small source data packets are aggregated into a container packet having a header configured to differentiate the container packet from the large source data packets and the small source data packets. The large source data packets and the container packet are encoded with forward error correction to produce FEC-encoded packets to enable forward error correction of the large source data packets and the container packet at the receiving device. The FEC-encoded packets are sent to the receiving device.
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43.发明申请公开(公告)号：US20180091565A1
公开(公告)日：2018-03-29
申请号：US15275844
申请日：2016-09-26
Applicant: Cisco Technology, Inc.
Inventor： John Arsenault , Michael A. Ramalho , Mihailo Zilovic , Jonathan Rosenberg
CPC classification number: H04L65/403 , G06F21/30 , G06F2221/2103 , H04L9/3271 , H04L63/08 , H04L63/10 , H04L67/02 , H04L67/104 , H04W12/08 , H04W88/02 , H04W88/08
Abstract: An access server communicates with a video conference device and a user device. The access server and the user device may access known mappings, including a default mapping. Each mapping is configured to map between tokens and symbols according to a distinct mapping relationship between the multi-bit tokens and the symbols. The access server instructs the video conference device to map an initial token to an initial symbol based on the default mapping and to transmit the initial symbol. The access server receives from the user device the initial token and a challenge mapping selected by the user device. The access server determines a challenge token that the challenge mapping maps to a challenge symbol, and instructs the video conference device to transmit the challenge symbol. The access server grants the user device access to an information carrying channel only if the challenge token is received from the user device.
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Patent Agency Ranking
44.发明申请公开(公告)号：US20170294984A1
公开(公告)日：2017-10-12
申请号：US15094475
申请日：2016-04-08
Applicant: Cisco Technology, Inc.
Inventor： Michael A. Ramalho , Dan Tan , Geir A. Sandbakken , Paul G. Bright-Thomas , Greg H. Hakonsen
IPC: H04L1/00 , H04L12/911
CPC classification number: H04L1/0041 , H04L1/0057 , H04L1/0083 , H04L47/827
Abstract: Large source data packets having large packet sizes and small source data packets having small packet sizes that are smaller than the large packet sizes are received. The small source data packets and the large source data packets are sent to a receiving device without forward error correction (FEC). The small source data packets are aggregated into a container packet having a header configured to differentiate the container packet from the large source data packets and the small source data packets. The large source data packets and the container packet are encoded with forward error correction to produce FEC-encoded packets to enable forward error correction of the large source data packets and the container packet at the receiving device. The FEC-encoded packets are sent to the receiving device.
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公开(公告)号：US09559805B2
公开(公告)日：2017-01-31
申请号：US14531015
申请日：2014-11-03
Applicant: Cisco Technology, Inc.
Inventor： Paul G. Bright-Thomas , Greg Hakonsen , Geir Sandbakken , William Geoffrey Prior , Marcello Caramma , Michael A. Ramalho
IPC: H04L1/00 , G06F11/10 , H04L29/06 , H04L7/04 , H04N21/238 , H04N21/6437 , H04N7/15
CPC classification number: H04L1/009 , G06F11/10 , H04L1/0009 , H04L1/0041 , H04L1/0042 , H04L1/0045 , H04L1/0057 , H04L1/0076 , H04L1/0083 , H04L1/0091 , H04L7/04 , H04L29/06176 , H04L29/06517 , H04L65/403 , H04L65/4076 , H04L65/607 , H04L65/608 , H04L2001/0092 , H04L2001/0093 , H04N7/152 , H04N21/238 , H04N21/6437
Abstract: Presented herein are downstream recovery (error correction) techniques for an aggregated/consolidated media stream. In one example, a consolidated media stream that includes source media packets from one or more sources is sent to one or more downstream receiving devices. Based on the source media packets, one or more self-describing recovery packets for downstream error correction of the source media packets are generated. The self-describing recovery packets include a mapping to the source media packets used to generate the self-describing recovery packets, thereby avoiding the addition of error correction information in the consolidated media stream. The one or more self-describing recovery packets are sent to each of the downstream receiving devices as a separate stream.
Abstract translation: 这里提出的是用于聚合/合并的媒体流的下游恢复（纠错）技术。 在一个示例中，将包括来自一个或多个源的源媒体分组的合并媒体流发送到一个或多个下游接收设备。 基于源媒体分组，生成用于源媒体分组的下行纠错的一个或多个自描述恢复分组。 自描述恢复分组包括到用于生成自描述恢复分组的源媒体分组的映射，从而避免在合并媒体流中添加错误校正信息。 一个或多个自描述恢复分组作为单独的流被发送到每个下游接收设备。
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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
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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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
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。
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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
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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