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公开(公告)号：US10666693B1
公开(公告)日：2020-05-26
申请号：US15965436
申请日：2018-04-27
Applicant: WhatsApp Inc.
Inventor： Ehren Andrew Kret , Manpreet Singh
Abstract: A messaging system establishes a secure call session between multiple parties. The call session is secured using an entropy value shared among parties in the call session. During the call session, the messaging system receives an instruction from a party in the call session to modify the call session. The call session may be modified by a party being added or removed from the session. Based on the received instruction, the messaging system performs an entropy value update to ensure that the call session is secure after the modification is made. A new entropy value is generated by a party in the call session and transmitted to other parties in the call session. Using the new entropy value, the messaging system establishes the modified secure call session.
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公开(公告)号：US10412435B2
公开(公告)日：2019-09-10
申请号：US15813575
申请日：2017-11-15
Applicant: WhatsApp Inc.
Inventor： Manpreet Singh , Brian Lange Acton , Jan Boris Koum
IPC: H04N7/173 , H04N21/2662 , H04N21/647 , H04N19/186
Abstract: Techniques to dynamically engage a reduced-color mode for streaming video encoding are generally described. For example, in one embodiments, an apparatus may include an encoding configuration component operative to receive network performance information for a video stream at a sending device, the video stream using a first number of variable bits for color encoding; and assign a reduced-color mode to a media component based on the network performance information, the media component operative to generate the video stream in the reduced-color mode, wherein the reduced-color mode uses a second number of variable bits for color encoding, the second number less than the first number, and a network component operative to send the video stream from the sending device to a receiving device using the reduced-color mode. Other embodiments are described and claimed.
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公开(公告)号：US10225395B2
公开(公告)日：2019-03-05
申请号：US14963374
申请日：2015-12-09
Applicant: WhatsApp Inc.
Inventor： Manpreet Singh , YuanYuan Wang
Abstract: Techniques to dynamically engage echo cancellation are described. In one embodiment, an apparatus may comprise a streaming component operative to establish a audio connection between the first client device and a second client device via the network interface controller; and receive a far-end audio stream at the first client device from the second client device via the audio connection; an audio capture component operative to capture a near-end audio stream at the first client device; and an echo processing component operative to compare the near-end audio stream and the far-end audio stream to determine whether a far-end echo is present in the near-end audio stream; and use an echo-cancellation module at the first client device where the far-end echo is present in the near-end audio stream. Other embodiments are described and claimed.
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14.发明申请公开(公告)号：US20190068678A1
公开(公告)日：2019-02-28
申请号：US15692475
申请日：2017-08-31
Applicant: WhatsApp Inc.
Inventor： Manpreet Singh , YuanYuan Wang
Abstract: Techniques to dynamically engage an all-intra-coded mode for streaming video encoding are described. In one embodiment, an apparatus may comprise an encoding configuration component operative to receive network performance information for a video stream at a sending device; and assign an all-intra-coded mode to a media component based on the network performance information; the media component operative to generate the video stream in the all-intra-coded mode, wherein the video stream uses exclusively intra-coded frames in the all-intra-coded mode; and a network component operative to send the video stream from the sending device to a receiving device using the all-intra-coded mode. Other embodiments are described and claimed.
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公开(公告)号：US20170085420A1
公开(公告)日：2017-03-23
申请号：US14859141
申请日：2015-09-18
Applicant: WhatsAPP Inc.
Inventor： Manpreet Singh
CPC classification number: H04L41/0803 , H04L12/28 , H04L43/0864 , H04L43/0888 , H04L43/0894 , H04L65/1069 , H04L65/80 , H04L69/22
Abstract: Techniques to dynamically configure target bitrate for streaming network connections are described. An apparatus may comprise a streaming component operative to establish a streaming network connection with a second client device at a first client device; and a stream configuration component operative to determine inter-arrival rate information for the streaming network connection; provide the inter-arrival rate information to an inter-arrival rate analysis component; receive a preliminary target bitrate from the inter-arrival rate analysis component in response to providing the inter-arrival rate information to the inter-arrival rate analysis component; determine round-trip time information for the streaming network connection; determine an assigned target bitrate and a packet size setting for the streaming network connection based on the preliminary target bitrate and the round-trip time information; and configure the streaming component to perform the streaming network connection with the assigned target bitrate and the packet size setting. Other embodiments are described and claimed.
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Patent Agency Ranking
公开(公告)号：US11095769B1
公开(公告)日：2021-08-17
申请号：US16255133
申请日：2019-01-23
Applicant: WhatsApp Inc.
Inventor： Manpreet Singh , YuanYuan Wang
Abstract: Techniques to dynamically engage echo cancellation are described. In one embodiment, an apparatus may comprise a streaming component operative to establish a audio connection between the first client device and a second client device via the network interface controller; and receive a far-end audio stream at the first client device from the second client device via the audio connection; an audio capture component operative to capture a near-end audio stream at the first client device; and an echo processing component operative to compare the near-end audio stream and the far-end audio stream to determine whether a far-end echo is present in the near-end audio stream; and use an echo-cancellation module at the first client device where the far-end echo is present in the near-end audio stream. Other embodiments are described and claimed.
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17.发明授权公开(公告)号：US10462078B2
公开(公告)日：2019-10-29
申请号：US15817048
申请日：2017-11-17
Applicant: WhatsApp Inc.
Inventor： Jun Gong , Manpreet Singh
IPC: H04L12/58 , H04L12/801 , H04L12/841 , H04L12/18
Abstract: Two (or more) client devices engage in a chat session. Packets associated with the chat session are numbered using a predetermined pattern. When the packets are received, the receiving client device extracts signals from the packet metadata to determine whether the primary cause of packet loss during transit is network congestion or link losses. Based on the extracted signals, the receiving device sends a control message back to the other client device indicating how one or more chat parameters should be updated. On receiving the control message, the other client device updates the chat parameters accordingly.
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公开(公告)号：US10348557B1
公开(公告)日：2019-07-09
申请号：US15987385
申请日：2018-05-23
Applicant: WhatsApp Inc.
Inventor： Manpreet Singh
Abstract: Techniques to dynamically configure target bitrate for streaming network connections are described. An apparatus may comprise a streaming component operative to establish a streaming network connection with a second client device at a first client device; and a stream configuration component operative to determine inter-arrival rate information for the streaming network connection; provide the inter-arrival rate information to an inter-arrival rate analysis component; receive a preliminary target bitrate from the inter-arrival rate analysis component in response to providing the inter-arrival rate information to the inter-arrival rate analysis component; determine round-trip time information for the streaming network connection; determine an assigned target bitrate and a packet size setting for the streaming network connection based on the preliminary target bitrate and the round-trip time information; and configure the streaming component to perform the streaming network connection with the assigned target bitrate and the packet size setting. Other embodiments are described and claimed.
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19.发明申请公开(公告)号：US20190158437A1
公开(公告)日：2019-05-23
申请号：US15817048
申请日：2017-11-17
Applicant: WhatsApp Inc.
Inventor： Jun Gong , Manpreet Singh
IPC: H04L12/58 , H04L12/801 , H04L12/841
CPC classification number: H04L51/04 , H04L12/1813 , H04L47/11 , H04L47/12 , H04L47/14 , H04L47/283
Abstract: Two (or more) client devices engage in a chat session. Packets associated with the chat session are numbered using a predetermined pattern. When the packets are received, the receiving client device extracts signals from the packet metadata to determine whether the primary cause of packet loss during transit is network congestion or link losses. Based on the extracted signals, the receiving device sends a control message back to the other client device indicating how one or more chat parameters should be updated. On receiving the control message, the other client device updates the chat parameters accordingly.
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公开(公告)号：US20190149868A1
公开(公告)日：2019-05-16
申请号：US15813648
申请日：2017-11-15
Applicant: WhatsApp Inc.
Inventor： Manpreet Singh , YuanYuan Wang , Shruthi Murthy , Jonathan Sheller
IPC: H04N21/2662 , H04N19/184 , H04N19/154 , H04N21/258
Abstract: Techniques to dynamically configure a sender bitrate for streaming media connections are described. In one embodiment, an apparatus may comprise a media component operative to generate a media stream at a sending client device, the media stream comprising a video stream and an audio stream, the media stream configured for a sending bitrate; and modifying the sending bitrate based on a receiver-side bitrate value; a network component operative to send the media stream to a receiving client device; and a bitrate determination component operative to receive the receiver-side bitrate value from the receiving client device, the receiver-side bitrate value based on a first network performance measure and a second network performance measure, the first network performance measure based on the video stream in isolation from the audio stream, the second network performance measure based on the audio stream in isolation from the video stream. Other embodiments are described and claimed.
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