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    Estimating network bandwidth using probe packets
    1.
    发明授权
    Estimating network bandwidth using probe packets 有权

    公开(公告)号：US11916798B2

    公开(公告)日：2024-02-27

    申请号：US18101566

    申请日：2023-01-25

    Applicant: Imagination Technologies Limited

    Inventor： Senthil Kumar Mani ,  Bala Manikya Prasad Puram

    IPC: H04L47/25 ,  H04L41/0896

    CPC classification number: H04L47/25 ,  H04L41/0896

    Abstract: A method of estimating available bandwidth for a network comprising a transmitting device and a receiving device, the method comprising: transmitting a media packet stream over the network to the receiving device, the media packets comprising media data for streaming media at the receiving device; transmitting one or more probe packets over the network so as to test the available bandwidth of the network, wherein the probe packets comprise duplicate data of the media packet stream; and determining, during transmission of the probe packets, a measure of network bandwidth availability in dependence on one or more metrics associated with receiving the media packet stream at the receiving device.

    Bandwidth Management
    3.
    发明公开
    Bandwidth Management 审中-公开

    公开(公告)号：US20230171196A1

    公开(公告)日：2023-06-01

    申请号：US18101566

    申请日：2023-01-25

    Applicant: Imagination Technologies Limited

    Inventor： Senthil Kumar Mani ,  Bala Manikya Prasad Puram

    IPC: H04L47/25 ,  H04L41/0896

    CPC classification number: H04L47/25 ,  H04L41/0896

    Abstract: A method of estimating available bandwidth for a network comprising a transmitting device and a receiving device, the method comprising: transmitting a media packet stream over the network to the receiving device, the media packets comprising media data for streaming media at the receiving device; transmitting one or more probe packets over the network so as to test the available bandwidth of the network, wherein the probe packets comprise duplicate data of the media packet stream; and determining, during transmission of the probe packets, a measure of network bandwidth availability in dependence on one or more metrics associated with receiving the media packet stream at the receiving device.

    Auto-Tuning of Acoustic Echo Canceller
    5.
    发明申请
    Auto-Tuning of Acoustic Echo Canceller 审中-公开

    公开(公告)号：US20190268478A1

    公开(公告)日：2019-08-29

    申请号：US16410839

    申请日：2019-05-13

    Applicant: Imagination Technologies Limited

    Inventor： Senthil Kumar Mani ,  Gandhi Namani ,  Srinivas Akella ,  Sai Ravi Teja Pulugurtha

    IPC: H04M9/08 ,  G10L21/02 ,  H04L5/16

    Abstract: A gain control system for dynamically tuning an echo canceller, the echo canceller being configured to estimate an echo of a far-end signal and subtract that echo estimate from a microphone signal to output an echo cancelled signal, the gain control system comprising a monitoring unit configured to estimate an energy associated with an impulse response of an adaptive filter configured to generate the echo estimate from the far-end signal and a gain tuner configured to adjust an attenuation of at least one of the microphone signal and the far-end signal in dependence on the estimated energy.

    Auto-tuning of an acoustic echo canceller
    7.
    发明授权
    Auto-tuning of an acoustic echo canceller 有权

    公开(公告)号：US09692882B2

    公开(公告)日：2017-06-27

    申请号：US14677693

    申请日：2015-04-02

    Applicant: Imagination Technologies Limited

    Inventor： Senthil Kumar Mani ,  Gandhi Namani ,  Srinivas Akella ,  Sai Ravi Teja Pulugurtha

    IPC: H04M9/08 ,  H04M3/00

    CPC classification number: H04M9/082 ,  H04M1/20 ,  H04M3/002

    Abstract: A gain control system for dynamically tuning an echo canceller, the echo canceller being configured to estimate an echo of a far-end signal and subtract that estimate from a microphone signal to output an echo cancelled signal, the system comprising an echo measurement unit configured to calculate a ratio of the microphone signal to the far-end signal, an attenuation unit configured to attenuate at least one of the microphone signal and the far-end signal to output a second microphone signal and a second far-end signal to the echo canceller, the ratio of the second microphone signal to the second far-end signal being different from the calculated ratio, and an attenuation controller configured to control the attenuation unit, in dependence on the calculated ratio, so as to alter the ratio of the second microphone signal to the second far-end signal and control the echo-cancelled signal.

    Automatic Tuning of a Gain Controller
    8.
    发明申请
    Automatic Tuning of a Gain Controller 审中-公开
    增益控制器的自动调谐

    公开(公告)号：US20160127561A1

    公开(公告)日：2016-05-05

    申请号：US14928205

    申请日：2015-10-30

    Applicant: Imagination Technologies Limited

    Inventor： Senthil Kumar Mani ,  Anupama Ghantasala

    IPC: H04M9/08 ,  H03G3/32

    CPC classification number: H04M9/082 ,  H03G3/32 ,  H04B3/23 ,  H04M3/002 ,  H04M9/08

    Abstract: A gain control system for applying gain to a far-end signal, the system comprising: a signal identifier configured to detect an echo of the far-end signal in a microphone signal; and a path estimator configured to estimate a characteristic of an echo path of the detected echo, wherein: the signal identifier is further configured to detect a near-end signal from the microphone signal; and in response to detecting the near-end signal, the gain control system is configured to adjust the gain applied to the far-end signal in dependence on the estimated characteristic of the echo path.

    Abstract translation: 一种用于向远端信号施加增益的增益控制系统，所述系统包括：信号标识符，被配置为检测麦克风信号中的远端信号的回波; 以及路径估计器，被配置为估计检测到的回波的回波路径的特性，其中：所述信号标识符还被配置为检测来自所述麦克风信号的近端信号; 并且响应于检测到所述近端信号，所述增益控制系统被配置为根据所述回波路径的估计特性来调整施加到所述远端信号的增益。

    Detection of acoustic echo cancellation
    9.
    发明授权
    Detection of acoustic echo cancellation 有权

    公开(公告)号：US11601554B2

    公开(公告)日：2023-03-07

    申请号：US16920518

    申请日：2020-07-03

    Applicant: Imagination Technologies Limited

    Inventor： Senthil Kumar Mani ,  Srinivas Akella ,  Anupama Ghantasala

    IPC: H04M9/08

    Abstract: An echo cancellation detector for controlling an acoustic echo canceller that is configured to cancel an echo of a far-end signal in a near-end signal in a telephony system, the echo cancellation detector comprising a comparison generator configured to compare the far-end signal with the near-end signal, a decision unit configured to make a determination about a first acoustic echo canceller based on that comparison and a controller configured to control an operation of a second acoustic echo canceller in dependence on the determination.

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