IP Library › Granted Patent US 12675253
Granted Patent B2
US 12675253 · App. 19/031,361 · Granted Jul 7, 2026

Screen projection method, videoconferencing device, and system

Inventor: Zhiqiang Liao (Xiamen, CN)
Assignee: YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.
G06F3/1454H04N7/15H04N21/4122
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Quick Facts
Patent No.
US 12675253
App. No.
19/031,361
Granted
Jul 7, 2026
Kind
B2
Abstract

The present disclosure provides a screen projection method, a videoconferencing device, and a system. The screen projection method includes: receiving a to-be-projected video stream sent by a screen projection initiator; decoding the to-be-projected video stream to generate a plurality of to-be-projected images; creating a virtual camera to enable a videoconferencing screen projection application to control the virtual camera through a standard camera interface to collect each to-be-projected image; and performing screen projection on the collected to-be-projected image by the videoconferencing screen projection application. The present disclosure can enable the videoconferencing screen projection application to interface with an operating system through a standard wireless screen projection collection interface to obtain the to-be-projected image for screen projection.

Claims (28)

1 . A screen projection method, comprising:

receiving a to-be-projected video stream sent by a screen projection initiator;

decoding the to-be-projected video stream to generate a plurality of to-be-projected images;

creating a virtual camera to enable a videoconferencing screen projection application to control the virtual camera through a standard camera interface to collect each of the to-be-projected images; and

performing screen projection on the collected to-be-projected image by the videoconferencing screen projection application;

wherein the screen projection method further comprises: when detecting that to-be-projected video streams sent by a plurality of screen projection initiators are received, decoding each of the to-be-projected video streams to generate a plurality of to-be-projected images corresponding to each of the to-be-projected video streams;

creating a virtual camera corresponding to each of the to-be-projected video streams, to enable the videoconferencing screen projection application to control each virtual camera through the standard camera interface to collect a plurality of to-be-projected images of a corresponding to-be-projected video stream; and

performing, by the videoconferencing screen projection application, the screen projection on the to-be-projected images collected by each virtual camera on independent display areas.

2 . The screen projection method according to claim 1 , wherein the receiving a to-be-projected video stream sent by a screen projection initiator comprises:

establishing a protocol interaction with the screen projection initiator based on a screen projection protocol to which the to-be-projected video stream belongs; and

after establishing the protocol interaction, receiving the to-be-projected video stream sent by the screen projection initiator.

3 . The screen projection method according to claim 1 , wherein the standard camera interface comprises camera api2.

4 . The screen projection method according to claim 1 , further comprising: when detecting that to-be-projected video streams sent by a plurality of screen projection initiators are received, decoding each of the to-be-projected video streams to generate a plurality of to-be-projected images corresponding to each of the to-be-projected video streams;

splicing to-be-projected images that are at a same time point among the to-be-projected video streams to generate a plurality of spliced to-be-projected images;

creating one virtual camera to enable the videoconferencing screen projection application to control the one virtual camera through the standard camera interface to collect the spliced to-be-projected images; and

performing the screen projection on the collected spliced to-be-projected images by the videoconferencing screen projection application.

5 . A videoconferencing device, configured to execute the screen projection method according to claim 1 .

6 . A screen projection system, comprising a screen projection initiator and the videoconferencing device according to claim 5 , wherein

the screen projection initiator is configured to send a to-be-projected video stream to the videoconferencing device.

7 . A videoconferencing device, configured to execute the screen projection method according to claim 2 .

8 . A screen projection system, comprising a screen projection initiator and the videoconferencing device according to claim 7 , wherein

the screen projection initiator is configured to send a to-be-projected video stream to the videoconferencing device.

9 . A videoconferencing device, configured to execute the screen projection method according to claim 3 .

10 . A screen projection system, comprising a screen projection initiator and the videoconferencing device according to claim 9 , wherein

the screen projection initiator is configured to send a to-be-projected video stream to the videoconferencing device.

11 . A videoconferencing device, configured to execute the screen projection method according to claim 4 .

12 . A screen projection system, comprising a screen projection initiator and the videoconferencing device according to claim 11 , wherein

the screen projection initiator is configured to send a to-be-projected video stream to the videoconferencing device.