公开(公告)号：US10306181B2

公开(公告)日：2019-05-28

申请号：US15290280

申请日：2016-10-11

Applicant: Cisco Technology, Inc.

Inventor： Michael Anthony Ramalho ,  Greg Harald Hakonsen

IPC: H04N7/14 ,  H04L29/06 ,  H04N7/15 ,  H04N19/00 ,  H04N21/63

Abstract: In one embodiment, a device in a network sends a long term reference frame of a video stream to one or more nodes in the network using a reliable transport mechanism. Subsequent to sending the long term reference frame, the device sends a sequence of regular frames of the video stream to the one or more nodes using an unreliable transport mechanism, whereby a frame in the sequence is derived from a directly prior frame in the sequence. The device identifies an expiration of a wait time from when the long term reference frame was first sent. The device sends a regular frame derived from the long term reference frame via the unreliable transport mechanism after the expiration of the wait time and subsequent to sending the sequence of regular frames.

公开(公告)号：US20180103233A1

公开(公告)日：2018-04-12

申请号：US15290280

申请日：2016-10-11

Applicant: Cisco Technology, Inc.

Inventor： Michael Anthony Ramalho ,  Greg Harald Hakonsen

IPC: H04N7/14 ,  H04L29/06 ,  H04N7/15 ,  H04N5/04

CPC classification number: H04N7/147 ,  H04L65/403 ,  H04L65/4069 ,  H04L65/602 ,  H04L65/608 ,  H04N7/15 ,  H04N19/00 ,  H04N21/631

Abstract: In one embodiment, a device in a network sends a long term reference frame of a video stream to one or more nodes in the network using a reliable transport mechanism. Subsequent to sending the long term reference frame, the device sends a sequence of regular frames of the video stream to the one or more nodes using an unreliable transport mechanism, whereby a frame in the sequence is derived from a directly prior frame in the sequence. The device identifies an expiration of a wait time from when the long term reference frame was first sent. The device sends a regular frame derived from the long term reference frame via the unreliable transport mechanism after the expiration of the wait time and subsequent to sending the sequence of regular frames.

公开(公告)号：US10284484B1

公开(公告)日：2019-05-07

申请号：US14799922

申请日：2015-07-15

Applicant: Cisco Technology, Inc.

Inventor： Michael Anthony Ramalho ,  Xiaoqing Zhu ,  Paul Edwin Jones

IPC: H04L12/825 ,  H04L12/875

Abstract: In one embodiment, a device in a network sends a first set of one or more packets at a first rate to a destination in the network. The device determines a queuing delay reporting time. The queuing delay reporting time represents an amount of time before an indication of a queuing delay associated with the sent first set of one or more packets is reported back to the device. The device determines a second rate based on the determined queuing delay reporting time and on a maximum allowable delay. The device sends a second set of packets at the second rate to the destination.

公开(公告)号：US09083776B2

公开(公告)日：2015-07-14

申请号：US13867884

申请日：2013-04-22

Applicant: Cisco Technology, Inc.

Inventor： James C. Frauenthal ,  Michael P. O'Brien ,  Michael Anthony Ramalho ,  Gary Alan Skrabutenas ,  Shmuel Shaffer ,  Steven L. Christenson

IPC: H04M9/08 ,  H04M3/00 ,  H04B3/23

CPC classification number: H04M3/002 ,  H04B3/23 ,  H04M9/082

Abstract: In an example embodiment, an example method is provided for echo mitigation in a conference call. In this method, a test audio signal is transmitted to a conference endpoint and as a result, an echo associated with the transmittal of the test audio signal is received. One or more parameters of the echo are then identified and an echo mitigation process is selected from multiple echo mitigation processes based on the identified parameters. The selected echo mitigation process is then applied.

Abstract translation: 在示例实施例中，提供了一种用于电话会议中的回音减轻的示例方法。 在该方法中，将测试音频信号发送到会议端点，结果，接收与发送测试音频信号相关联的回波。 然后识别回波的一个或多个参数，并且基于所识别的参数从多个回波减轻过程中选择回波减轻过程。 然后应用所选的回声减轻过程。

公开(公告)号：US20130230152A1

公开(公告)日：2013-09-05

申请号：US13867884

申请日：2013-04-22

Applicant: CISCO TECHNOLOGY, INC.

Inventor： James C. Frauenthal ,  Michael P. O'Brien ,  Michael Anthony Ramalho ,  Gary Alan Skrabutenas ,  Shmuel Shaffer ,  Steven L. Christenson

IPC: H04M3/00

CPC classification number: H04M3/002 ,  H04B3/23 ,  H04M9/082

Abstract: In an example embodiment, an example method is provided for echo mitigation in a conference call. In this method, a test audio signal is transmitted to a conference endpoint and as a result, an echo associated with the transmittal of the test audio signal is received. One or more parameters of the echo are then identified and an echo mitigation process is selected from multiple echo mitigation processes based on the identified parameters. The selected echo mitigation process is then applied.

Abstract translation: 在示例实施例中，提供了一种用于电话会议中的回音减轻的示例方法。 在该方法中，将测试音频信号发送到会议端点，结果，接收与发送测试音频信号相关联的回波。 然后识别回波的一个或多个参数，并且基于所识别的参数从多个回波减轻过程中选择回波减轻过程。 然后应用所选的回声减轻过程。