Abstract: A display picture synchronization method includes a source device that sends a first picture frame and a first specified display time corresponding to the first picture frame to each of the sink devices. If each of the sink devices successfully receives the first picture frame and determines that the first picture frame is capable of being displayed based on the first specified display time, each of the devices for performing picture frame synchronization display displays the first picture frame based on the first specified display time. Each of the devices for performing picture frame synchronization display does not display the first picture frame if a first sink device in the sink devices fails to receive the first picture frame or successfully receives the first picture frame but determines that the first picture frame is incapable of being displayed based on the first specified display time.

Abstract: This application discloses a device discovery method, a device, and a system, and relates to the field of communication technologies, to guarantee reliability of device discovery, reduce network overheads, and reduce network load. In this application, a discovery device (for example, a first device) discovers a device by multicasting/broadcasting a discovery request message. When receiving the discovery request message and determining that there is another device (for example, a third device) that meets a condition specified by the first device, a device (for example, a second device) may notify the first device.

Abstract: Some embodiments include a first electronic device that automatically sends a first search request and a second search request. The first search request is used in a search for an electronic device having a first projection receiving capability related to a first projection protocol, and the second search request is used in a search for an electronic device having a second projection receiving capability related to a second projection protocol. In some embodiments the first electronic device receives a first feedback message or a second feedback message, or any combination thereof, from a second electronic device, and the first electronic device automatically displays, in response to the first feedback message, the second feedback message, the first identity related to the second electronic device.

Abstract: A display method and an electronic device that relate to the field of terminal technologies are provided. A first electronic device can obtain identification information of a plurality of second electronic devices- and establish a correspondence between a display region of the first electronic device and identification information of each second electronic device. Therefore, the second electronic devices can automatically display content in different display regions based on the correspondence. The method includes performing, by the first electronic device, sending a display configuration message, receiving identification information sent by a second electronic device, establishing a correspondence between a display region and the identification information, and sending the correspondence and displayed display content.

Abstract: A projection method and system to control at least two of the following: projection content, a projection device, and projection time. The projection method includes: obtaining a projection condition that includes at least two of the following: a projection content condition, a projection device condition, and a projection time condition; receiving a projection instruction used to request to project, to a destination electronic device, multimedia content currently displayed by a source electronic device. The projection instruction includes projection information and if the projection information satisfies the projection condition, the projection method performs projection playback based on a uniform resource locator of the projection content in the projection information.