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公开(公告)号：US11641387B2
公开(公告)日：2023-05-02
申请号：US16853064
申请日：2020-04-20
IPC分类号： G06F15/16 , H04L65/80 , H04L65/1069 , H04L1/1607 , H04L43/0829 , H04L43/0823 , H04L47/2416
摘要： Methods and systems are disclosed wherein TCP may approximate Reliable Transport Protocol (RTP) or UDP delivery for real-time video/data conferencing applications that have long RTT connections.
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公开(公告)号：US11070941B2
公开(公告)日：2021-07-20
申请号：US16510177
申请日：2019-07-12
发明人： Michael A. Ramalho
摘要： Provided is a heterogeneous network of independently provided system components for detecting and verifying time and location of endpoints. In one aspect, a method includes receiving, at a first network component and from a second network component, a set of instructions for generating tokens in association with an application service; generating, at the first network component, the tokens based on the set of instructions; transmitting, by the first network component and according to the set of instructions, one or more of the tokens to one or more proximity emitter devices; receiving, from a user device, a message including a token received by the user device from at least one of the one or more proximity emitter devices; and validating the token to confirm that the token is from among the tokens generated by the first network component, the validation allowing the user device access to the application service.
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公开(公告)号：US10263732B2
公开(公告)日：2019-04-16
申请号：US15375573
申请日：2016-12-12
发明人： Paul G. Bright-Thomas , Greg Hakonsen , Geir Sandbakken , William Geoffrey Prior , Marcello Caramma , Michael A. Ramalho
IPC分类号： H04L1/00 , G06F11/10 , H04L29/06 , H04L7/04 , H04N21/238 , H04N21/6437 , H04N7/15
摘要： 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.
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公开(公告)号：US20180227010A1
公开(公告)日：2018-08-09
申请号：US15926720
申请日：2018-03-20
摘要： In a transmit method, a set of data eigenvectors that are based on a Prometheus Orthonormal Set (PONS) code construction and orthogonal to each other are stored, wherein the data eigenvectors are mapped to unique multi-bit words. A pilot sequence representing a pilot eigenvector that is based on the PONS code construction and orthogonal to each of the data eigenvectors is generated. Input data are grouped into multi-bit words and data eigenvectors among the data eigenvectors are selected based on the multi-bit words. A spread data sequence including the selected data eigenvectors and that is synchronized to the pilot sequence is generated. An acoustic signal including the synchronized pilot sequence and the spread data sequence is generated. The acoustic signal is transmitted.
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公开(公告)号：US20180175903A1
公开(公告)日：2018-06-21
申请号：US15383246
申请日：2016-12-19
CPC分类号： H04B1/69 , G10L19/0212 , G10L19/167 , H04B1/7103 , H04B11/00
摘要： In a transmit method, a set of data eigenvectors that are based on a Prometheus Orthonormal Set (PONS) code construction and orthogonal to each other are stored, wherein each of the data eigenvectors is mapped to a unique multi-bit word. A pilot sequence representing a pilot eigenvector that is based on the PONS code construction and orthogonal to each of the data eigenvectors is generated. Input data is grouped into multi-bit words and ones of the data eigenvectors mapped to the multi-bit words are selected. A spread data sequence including the selected ones of the data eigenvectors and that is synchronized to the pilot sequence is generated. An acoustic signal including the synchronized pilot sequence and the spread data sequence is generated. The acoustic signal is transmitted.
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公开(公告)号：US09667686B2
公开(公告)日：2017-05-30
申请号：US14576855
申请日：2014-12-19
CPC分类号： H04L65/80 , H04L12/1818 , H04L65/403
摘要： A method that includes: (1) transmitting, at a first transmit time point, a first probe packet over a network connection to a conferencing server immediately before transmitting a data packet, the first probe packet arriving at the conferencing server at a first receive time point; (2) transmitting, at a second transmit time point, a second probe packet over the network connection to the conferencing server immediately after transmitting the data packet, the second probe packet arriving at the conferencing server at a second receive time point, the first and second probe packets being smaller than the data packet; (3) receiving information encoding a first difference between the first and second transmit time points and a second difference between the first and second receive time points; and (4) based on the first and second differences, modifying a transmission parameter associated with data packets to be transmitted thereafter to the conferencing server.
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公开(公告)号：US09351024B2
公开(公告)日：2016-05-24
申请号：US14481065
申请日：2014-09-09
发明人： Michael A. Ramalho , Toerless T. Eckert , Mohamed K. Zanaty , Mihailo Zilovic , James E. Coffman
IPC分类号： H04N21/2385 , H04N21/24 , H04L12/26
CPC分类号： H04N21/2385 , H04L43/0882 , H04N21/2402
摘要： A system includes a processor operable to identify each of a plurality of first video packets from a communication session with a first identifier designating that bandwidth is reserved on the network for the packet, and identify each of a plurality of second video packets from the communication session with a second identifier designating that bandwidth is not reserved on the network for the packet. The system further includes an interface operable to initiate transmission of the plurality of first video packets and the plurality of second video packets in the communication session.
摘要翻译： 系统包括处理器，其可操作以从具有第一标识符的通信会话中识别多个第一视频分组中的每一个，所述第一标识符指定在所述分组的网络上保留所述带宽，并且从所述通信会话中识别多个第二视频分组中的每一个 具有第二标识符，指定在分组的网络上不保留带宽。 所述系统还包括可操作以在所述通信会话中启动所述多个第一视频分组和所述多个第二视频分组的传输的接口。
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公开(公告)号：US09237226B2
公开(公告)日：2016-01-12
申请号：US14552723
申请日：2014-11-25
摘要： In one embodiment, an echo canceller configured to cancel echo in a wideband voice conference is provided. A double-talk condition may be when a plurality of users are speaking substantially simultaneously. When a double-talk condition is detected in the wideband conference, a high-frequency process is enabled and used to process signals in the high band to reduce echo. Accordingly, echo in the high band may not be produced by end devices being used by the users' speaking. Also, the users speaking have the echo cancelled in the low band and substantial echo does not result. This results in the users speaking experiencing the conference in the narrowband. The other users that are not speaking, however, continue to receive wideband signals. The users not speaking also continue to have echo cancellation performed for the high band and low band because these users are not speaking and thus attenuation of their voices is not a consideration.
摘要翻译： 在一个实施例中，提供了被配置为在宽带语音会议中消除回波的回声消除器。 当多个用户基本上同时进行说话时，双方通话状况可能是这样。 当在宽带会议中检测到双向通话条件时，可以使用高频处理并用于处理高频段中的信号以减少回声。 因此，高频段的回波可能不会被用户所说的终端设备所产生。 另外，说话的用户在低频带中取消了回声，并且不会产生显着的回波。 这导致用户在窄带中体验会议。 然而，不说话的其他用户继续收到宽带信号。 不说话的用户还会对高频带和低频带继续进行回波消除，因为这些用户不会说话，因此声音的衰减不是考虑因素。
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公开(公告)号：US11488612B2
公开(公告)日：2022-11-01
申请号：US17084915
申请日：2020-10-30
发明人： Michael A. Ramalho , Jonathan Rosenberg , Keith Griffin , Niall L McDonnell , Liam Frawley , Martin Bernard Feeney
IPC分类号： G10L19/018 , G10L25/06
摘要： The present technology can receive audio segments from sources within one or more conference room, and can create audio fingerprints from the sources. The audio fingerprints are optimized for audio in conference room environments, which include distortions from room impulse responses, and various encoding used by telecommunication networks. In some embodiments, when two audio segments are matched, a user equipment can be instructed to mute its speakers to avoid feedback. In some embodiments, when two audio segments are matched, a user equipment can be given instructions to join a conference taking place in the room in when the audio segment originated.
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公开(公告)号：US20210050026A1
公开(公告)日：2021-02-18
申请号：US17084915
申请日：2020-10-30
发明人： Michael A. Ramalho , Jonathan Rosenberg , Keith Griffin , Niall L McDonnell , Liam Frawley , Martin Bernard Feeney
IPC分类号： G10L19/018 , G10L25/06
摘要： The present technology can receive audio segments from sources within one or more conference room, and can create audio fingerprints from the sources. The audio fingerprints are optimized for audio in conference room environments, which include distortions from room impulse responses, and various encoding used by telecommunication networks. In some embodiments, when two audio segments are matched, a user equipment can be instructed to mute its speakers to avoid feedback. In some embodiments, when two audio segments are matched, a user equipment can be given instructions to join a conference taking place in the room in when the audio segment originated.
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