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公开(公告)号：US20170048296A1
公开(公告)日：2017-02-16
申请号：US14826509
申请日：2015-08-14
Applicant: Cisco Technology, Inc.
Inventor： Michael A. Ramalho , Darrin Hobson Simmons , Michael P. Dimitroff
CPC classification number: H04L65/80 , H04L1/1607 , H04L43/0835 , H04L43/0847 , H04L65/1069 , H04L65/403 , H04L65/608
Abstract: 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.
Abstract translation: 公开了方法和系统，其中TCP可以近似具有长RTT连接的实时视频/数据会议应用的可靠传输协议（RTP）或UDP传送。
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公开(公告)号：US11164577B2
公开(公告)日：2021-11-02
申请号：US16255449
申请日：2019-01-23
Applicant: Cisco Technology, Inc.
Inventor： Vikas Vashisht , Michael A. Ramalho , Mihailo Zilovic , Dario De Santis
Abstract: The present technology pertains to a voice assistant configured for use in a meeting room environment where the voice assistant can learn speech parameters for a meeting taking place in the meeting room environment. The voice assistant can use the speech parameters to deliver proactive notifications in a manner that is less intrusive to the conversation in the meeting.
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公开(公告)号：US11005521B2
公开(公告)日：2021-05-11
申请号：US16779880
申请日：2020-02-03
Applicant: Cisco Technology, Inc.
Inventor： Knut Inge Hvidsten , Michael A. Ramalho , Ragnvald Balch Barth
IPC: H04B1/7095 , H04L7/00 , H04B1/708
Abstract: Doppler correlators are configured to receive samples of a signal sampled based on a frequency. Each Doppler correlator includes successive butterfly elements. Each butterfly element includes cross-coupled first and second branches that include a sample delay that doubles for each successive butterfly element, and a sample inversion selectively placed in one of the first and second branches to encode into the successive butterfly elements of each Doppler correlator the same code sequence. Each Doppler correlator is configured with a respective phase rotation that varies across the Doppler correlators. Each Doppler correlator is configured to correlate the samples against the code sequence and apply the respective phase rotation to the samples as the samples are shifted through the successive butterfly elements, to produce respective correlation results from each Doppler correlator centered on a respective frequency offset from the frequency that varies across the Doppler correlators based on the phase rotations.
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公开(公告)号：US20210014639A1
公开(公告)日：2021-01-14
申请号：US16510177
申请日：2019-07-12
Applicant: Cisco Technology, Inc.
Inventor： Michael A. Ramalho
Abstract: 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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15.发明授权公开(公告)号：US10673580B2
公开(公告)日：2020-06-02
申请号：US15366814
申请日：2016-12-01
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Michael A. Ramalho , Jon M. Snyder , Kashyap Kodanda Ram Kambhatla , Pal-Erik Martinsen , Wai-tian Tan , Paul Edwin Jones
Abstract: A method is described and in one embodiment includes receiving at a first node in a communications network a message associated with a first flow, wherein the message comprises a flow treatment attribute including metadata indicative of how the first flow should be treated in the network; analyzing the flow treatment attribute at the first node; setting policy for treatment of the flow in the network based on the analyzing; and forwarding the message to a next network node.
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Patent Agency Ranking
公开(公告)号：US20200169289A1
公开(公告)日：2020-05-28
申请号：US16779880
申请日：2020-02-03
Applicant: Cisco Technology, Inc.
Inventor： Knut Inge Hvidsten , Michael A. Ramalho , Ragnvald Balch Barth
IPC: H04B1/7095 , H04L7/00 , H04B1/708
Abstract: Doppler correlators are configured to receive samples of a signal sampled based on a frequency. Each Doppler correlator includes successive butterfly elements. Each butterfly element includes cross-coupled first and second branches that include a sample delay that doubles for each successive butterfly element, and a sample inversion selectively placed in one of the first and second branches to encode into the successive butterfly elements of each Doppler correlator the same code sequence. Each Doppler correlator is configured with a respective phase rotation that varies across the Doppler correlators. Each Doppler correlator is configured to correlate the samples against the code sequence and apply the respective phase rotation to the samples as the samples are shifted through the successive butterfly elements, to produce respective correlation results from each Doppler correlator centered on a respective frequency offset from the frequency that varies across the Doppler correlators based on the phase rotations.
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17.发明授权公开(公告)号：US10158684B2
公开(公告)日：2018-12-18
申请号：US15275844
申请日：2016-09-26
Applicant: Cisco Technology, Inc.
Inventor： John Arsenault , Michael A. Ramalho , Mihailo Zilovic , Jonathan Rosenberg
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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18.发明申请公开(公告)号：US20180315431A1
公开(公告)日：2018-11-01
申请号：US15581104
申请日：2017-04-28
Applicant: Cisco Technology, Inc.
Inventor： Ahmed Badr , Ashish J. Khisti , Wai-tian Tan , Michael A. Ramalho , John G. Apostolopoulos
IPC: G10L19/005 , G10L15/02 , G10L21/02 , G10L25/84
CPC classification number: G10L19/005 , G10L15/08 , G10L25/84 , G10L25/93 , G10L2015/025 , H04L1/004 , H04L1/007 , H04L2001/0098
Abstract: An endpoint device receives a sequence of audio frames. The endpoint device determines for each audio frame a respective importance level among possible importance levels ranging from a low importance level to a high importance level based on content in the audio frame indicative of the respective importance level. The endpoint device associates each audio frame with the respective importance level, to produce different subsets of audio frames associated with respective ones of different importance levels. The endpoint device, for each subset of audio frames, applies forward error correction to a fraction of audio frames in the subset of audio frames, wherein the fraction increases as the importance level of the audio frames in the subset increases, and does not apply forward error correction to remaining audio frames in the subset.
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公开(公告)号：US10003377B1
公开(公告)日：2018-06-19
申请号：US15383246
申请日：2016-12-19
Applicant: Cisco Technology, Inc.
Inventor： Michael A. Ramalho , Mihailo Zilovic , David A. Benham
Abstract: 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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20.发明授权公开(公告)号：US09948561B2
公开(公告)日：2018-04-17
申请号：US14686575
申请日：2015-04-14
Applicant: CISCO TECHNOLOGY, INC.
Inventor： William C. VerSteeg , Michael A. Ramalho
IPC: H04L12/801 , H04L12/873 , H04L12/927 , H04L12/26
CPC classification number: H04L47/12 , H04L43/0852 , H04L43/0894 , H04L47/28 , H04L47/52 , H04L47/522 , H04L47/56 , H04L47/801
Abstract: Embodiments include detecting an increase in delay of a flow assigned to a first queue of a network device, where the increase is sufficient to cause the flow rate of the flow to decrease if the flow is delay-sensitive. Embodiments further include determining whether an amount of bandwidth consumed by the flow decreases sufficiently after the increase is detected, and assigning the flow to a second queue based, at least in part, on determining the amount of bandwidth consumed by the flow does not decrease sufficiently. Specific embodiments include evaluating a series of two or more bandwidth measurements of the flow according to a bandwidth reduction measure to determine whether the amount of bandwidth consumed by the flow decreases by sufficiently. More specific embodiments include the first queue being configured to receive delay-sensitive flows and the second queue being configured to receive delay-insensitive nice flows.
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