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1. 发明授权

US11606405B2 Receiving compressed video frames in a video conference 有权
公开(公告)号：US11606405B2
公开(公告)日：2023-03-14
申请号：US17833443
申请日：2022-06-06
申请人： Zoom Video Communications, Inc.
发明人： Karan Lyons
IPC分类号： H04L65/70 , H04L12/18 , H04N19/44
摘要： One disclosed example method includes receiving, by a video conference provider, video frames from a plurality of existing participants in a video conference; receiving, by the video conference provider, a request from a new user to join the video conference, and in response: generating, by the video conference provider, an instantaneous decoder refresh (IDR) frame; determining, by the video conference provider, one or more prior video frames previously acknowledged by each existing participant of the plurality of existing participants; generating, by the video conference provider, a benchmark frame for each of the plurality of existing participants based on at least one of the determined one or more prior video frames and the IDR frame; transmitting, by the video conference provider, the IDR frame to the new user; and transmitting, by the video conference provider, a message comprising the benchmark frame to each of the plurality of existing participants.

2. 发明申请

US20230030230A1 Encryption-Based Device Enrollment 有权
公开(公告)号：US20230030230A1
公开(公告)日：2023-02-02
申请号：US17390663
申请日：2021-07-30
申请人： Zoom Video Communications, Inc.
发明人： Karan Lyons
IPC分类号： H04L29/06 , H04L9/32
摘要： One example method includes a device management system detecting an attempt to access a user account by an unenrolled device. The device management system identifies a first enrolled device of the user account by accessing a signature chain of the user account. The device management system facilitates a transmission of a cryptographically-signed enrollment request from the unenrolled device to the first enrolled device. The first enrolled device is configured to cryptographically validate the enrollment request. The first enrolled device is further configured to generate an encrypted attestation message that indicates that the unenrolled device has been authenticated. The unenrolled device can receive and decrypt the encrypted attestation message based on a passcode being displayed on the first enrolled device. The device management system receives a decrypted attestation message from the unenrolled device and updates the signature chain to include a new sequential record for the unenrolled device.

3. 发明申请

US20220376895A1 HANDLING JOINING AND LEAVING OF PARTICIPANTS IN VIDEOCONFERENCING WITH END-TO-END ENCRYPTION 有权
公开(公告)号：US20220376895A1
公开(公告)日：2022-11-24
申请号：US17327289
申请日：2021-05-21
申请人： Zoom Video Communications, Inc.
发明人： Simon Booth , Karan Lyons
IPC分类号： H04L9/08 , H04N7/15 , H04L9/32 , H04L9/30
摘要： One disclosed example method includes a leader client device associated with a leader participant generating a meeting key for a video meeting joined by multiple participants. For each participant, the leader client device obtains a long-term public key and a cryptographic signature associated with the participant. The leader client device verifies the cryptographic signature of the participant based on the long-term public key and the cryptographic signature. If the verification is successful, the leader client device encrypts the meeting key for the participant using a short-term private key generated by the leader client device, a short-term public key of the participant, a meeting identifier, and a user identifier identifying the participant. The leader client device further publishes the encrypted meeting key for the participant on the meeting system. The leader client device encrypts and decrypts meeting data communicated with other participants based on the meeting key.

4. 发明申请

US20220377059A1 LONG-TERM KEY MANAGEMENT FOR END-TO-END ENCRYPTION OF VIDEOCONFERENCES 有权
公开(公告)号：US20220377059A1
公开(公告)日：2022-11-24
申请号：US17327295
申请日：2021-05-21
申请人： Zoom Video Communications, Inc.
发明人： Karan Lyons , Simon Booth
IPC分类号： H04L29/06
摘要： One example system for providing long-term key management for end-to-end encryption of videoconferencing information includes a processor and at least one memory device. The memory device includes code for causing the processor to generate one or more persistent cryptographic keys for a specific client device. A persistent key can be stored in or on the specific client device. A mapping of the key to a client device identifier can be transmitted to the video conference provider and can enable the video conference provider to set up videoconferences with per client encryption. A processor at the video conference provider can distribute the key for each client device to one or more participants in a videoconference to enable the client devices to end-to-end encrypt the videoconference.

5. 发明授权

US11290465B1 Systems and methods for signed contact lists for user authentication in video conferences 有权
公开(公告)号：US11290465B1
公开(公告)日：2022-03-29
申请号：US17327265
申请日：2021-05-21
申请人： Zoom Video Communications, Inc.
发明人： Karan Lyons
IPC分类号： H04N7/15 , H04L29/06 , H04L9/32 , H04N7/14
摘要： One example method includes connecting, by a first client device associated with a user, to a video conference hosted by a video conference provider, the video conference having a plurality of participants; receiving participant information for each participant of the plurality of participants; generating, for one or more of the participants, an identity record corresponding to the respective participant, the identity record including video conference information, at least a portion of the participant information, and a cryptographic signature; appending, for each generated identity record, the respective identity record to a user contact list; and verifying at least one participant of the plurality of participants based on the user contact list.

6. 发明申请

US20220353318A1 RECEIVING COMPRESSED VIDEO FRAMES IN A VIDEO CONFERENCE 有权
公开(公告)号：US20220353318A1
公开(公告)日：2022-11-03
申请号：US17833443
申请日：2022-06-06
申请人： Zoom Video Communications, Inc.
发明人： Karan Lyons
IPC分类号： H04L65/70 , H04L12/18 , H04N19/44
摘要： One disclosed example method includes receiving, by a video conference provider, video frames from a plurality of existing participants in a video conference; receiving, by the video conference provider, a request from a new user to join the video conference, and in response: generating, by the video conference provider, an instantaneous decoder refresh (IDR) frame; determining, by the video conference provider, one or more prior video frames previously acknowledged by each existing participant of the plurality of existing participants; generating, by the video conference provider, a benchmark frame for each of the plurality of existing participants based on at least one of the determined one or more prior video frames and the IDR frame; transmitting, by the video conference provider, the IDR frame to the new user; and transmitting, by the video conference provider, a message comprising the benchmark frame to each of the plurality of existing participants.

7. 发明授权

US11368510B1 Video frame generation 有权
公开(公告)号：US11368510B1
公开(公告)日：2022-06-21
申请号：US17246191
申请日：2021-04-30
申请人： Zoom Video Communications, Inc.
发明人： Karan Lyons
IPC分类号： H04L65/60 , H04L12/18 , H04N19/44
摘要： One disclosed example method includes receiving, by a video conference provider, video frames from a plurality of existing participants in a video conference; receiving, by the video conference provider, a request from a new user to join the video conference, and in response: generating, by the video conference provider, an instantaneous decoder refresh (IDR) frame; determining, by the video conference provider, one or more prior video frames previously acknowledged by each existing participant of the plurality of existing participants; generating, by the video conference provider, a benchmark frame for each of the plurality of existing participants based on at least one of the determined one or more prior video frames and the IDR frame; transmitting, by the video conference provider, the IDR frame to the new user; and transmitting, by the video conference provider, a message comprising the benchmark frame to each of the plurality of existing participants.

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