# US 11,907,603 B2 · Screen projection control method and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,907,603 B2 - Document ID: US11907603B2 - Status: Granted - Kind: B2 - Application number: 17/550,672 - Filed: 2021-12-14 - Published: 2022-10-06 - Granted: 2024-02-20 - Earliest claimed: 2021-03-30 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Limited - Inventors: Tao Cheng; Xiaoyan Shi - Web page: https://patentgrep.com/patent/US11907603B2 ## CPC - G06F 3/1454: {involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay} - G06F 3/1438: {using more than one graphics controller} - G06F 13/4282: {on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247)} - G06F 2213/0042: Universal serial bus [USB] - G09G 2340/0407: Resolution change, inclusive of the use of different resolutions for different screen areas - G09G 2370/042: for monitor identification - G09G 2370/12: Use of DVI or HDMI protocol in interfaces along the display data pipeline - G09G 2370/16: Use of wireless transmission of display information - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A screen projection control method and an electronic device are provided. The screen projection control method includes detecting that a first electronic device and a second electronic device are connected with each other through a physical bus and confirming screen projection reference parameters based on the second electronic device and the physical bus; establishing a network link between the first electronic device and the second electronic device; obtaining multimedia data to-be-outputted by an output unit of the first electronic device; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters to allow the second electronic device to output the multimedia data. ## Claims ### Claim 1 A screen projection control method, comprising: detecting that a first electronic device and a second electronic device are connected with each other through a physical bus and confirming screen projection reference parameters based on the second electronic device and the physical bus, the screen projection reference parameters including, a wireless network that the first electronic device is located or a wireless network that the second electronic device is located; establishing a network link between the first electronic device and the second electronic device; obtaining multimedia data to-be-outputted by an output unit of the first electronic device; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters to allow the second electronic device to output the multimedia data. ### Claim 2 (depends on 1) The method according to claim 1, wherein: establishing the network link between the first electronic device and the second electronic device includes establishing two network links between the first electronic device and the second electronic device; and transmitting the multimedia data to the second electronic device using the network link includes transmitting the multimedia data to the second electronic device using at least one of the two network links. ### Claim 3 (depends on 2) The method according to claim 2, wherein establishing the two network links between the first electronic device and the second electronic device includes: establishing a wired network link using a first-type network card on the first electronic device and a first-type network card on the second electronic device, wherein the physical bus is used as a transmission medium, and the first-type of network card includes a network card adapted to the physical bus; and establishing a wireless network link using a second-type network on the second electronic device and a second-type network card on the first electronic device. ### Claim 4 (depends on 3) The method according to claim 3, wherein transmitting the multimedia data to the second electronic device using the at least one of the two network links includes: in response to a connection of the physical bus being maintained between the first electronic device and the second electronic device, using the wired network link to transmit the multimedia data to the second electronic device; and in response to the connection of the physical bus between the first electronic device and the second electronic device being disconnected, using the wireless network link to transmit the multimedia data to the second electronic device. ### Claim 5 (depends on 2) The method according to claim 2, wherein: before establishing the two network links between the first electronic device and the second electronic device, the method further includes respectively obtaining network connection reference information needed to establish the two network links through the physical bus; and establishing the two network links between the first electronic device and the second electronic device includes, based on the network connection reference information needed for each network link, establishing the two network links between the first electronic device and the second electronic device. ### Claim 6 (depends on 1) The method according to claim 1, wherein transmitting the multimedia data to the second electronic device using the at least one of the two network links includes: in response to data amount of the multimedia data exceeding a set threshold: transmitting a first part data of the multimedia data to the second electronic device through the wired network link, and transmitting a second part data of the multimedia data through the wireless network link, wherein the second part data includes data other than the first part data in the multimedia data. ### Claim 7 (depends on 1) The method according to claim 1, wherein: before transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters, the method further includes: detecting whether the first electronic device and the second electronic device support multimedia data transmission using a display interface; and in response to the first electronic device and the second electronic device supporting the multimedia data transmission using the display interface, transmitting the multimedia data to the second electronic device through the physical bus based on the display interface on the first electronic device; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters includes: in response to the first electronic device and the second electronic device not supporting the multimedia data transmission using the display interface, transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters. ### Claim 8 (depends on 1) The method according to claim 1, wherein detecting that the first electronic device and the second electronic device are connected with each other through the physical bus includes: detecting that the first electronic device and the second electronic device are connected with each other by a physical bus that is consistent with a universal serial bus (USB) interface appearance standard. ### Claim 9 (depends on 1) The method according to claim 1, wherein: before transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters, the method further includes: in response to the physical bus including a transmission channel for transmitting the multimedia data, and the first electronic device and the second electronic device supporting transmission protocol corresponding to the transmission channel of the physical bus, transmitting the multimedia data to the second electronic device through the physical bus; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters includes: in response to the physical bus not including the transmission channel for transmitting the multimedia data, or at least one of the first electronic device or the second electronic device not supporting the transmission protocol corresponding to the transmission channel of the physical bus, transmitting the multimedia data to the second electronic device using the network link. ### Claim 10 An electronic device, comprising: a memory, configured to store program instructions for performing a screen projection control method; and a processor, coupled with the memory and, when the program instructions being executed, configured for: detecting that a first electronic device and a second electronic device are connected with each other through a physical bus and confirming screen projection reference parameters based on the second electronic device and the physical bus, the screen projection reference parameters including, a wireless network that the first electronic device is located or a wireless network that the second electronic device is located; establishing a network link between the first electronic device and the second electronic device; obtaining multimedia data to-be-outputted by an output unit of the first electronic device; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters to allow the second electronic device to output the multimedia data. ### Claim 11 (depends on 10) The device according to claim 10, wherein: establishing the network link between the first electronic device and the second electronic device includes establishing two network links between the first electronic device and the second electronic device; and transmitting the multimedia data to the second electronic device using the network link includes transmitting the multimedia data to the second electronic device using at least one of the two network links. ### Claim 12 (depends on 11) The device according to claim 11, wherein establishing the two network links between the first electronic device and the second electronic device includes: establishing a wired network link using a first-type network card on the first electronic device and a first-type network card on the second electronic device wherein the physical bus is used as a transmission medium, and the first-type of network card includes a network card adapted to the physical bus; and establishing a wireless network link using a second-type network on the second electronic device and a second-type network card on the first electronic device. ### Claim 13 (depends on 12) The device according to claim 12, wherein transmitting the multimedia data to the second electronic device using the at least one of the two network links includes: in response to a connection of the physical bus being maintained between the first electronic device and the second electronic device, using the wired network link to transmit the multimedia data to the second electronic device; and in response to the connection of the physical bus between the first electronic device and the second electronic device being disconnected, using the wireless network link to transmit the multimedia data to the second electronic device. ### Claim 14 (depends on 11) The device according to claim 11, wherein: before establishing the two network links between the first electronic device and the second electronic device, the processor is further configured for respectively obtaining network connection reference information needed to establish the two network links through the physical bus; and establishing the two network links between the first electronic device and the second electronic device includes, based on the network connection reference information needed for each network link, establishing the two network links between the first electronic device and the second electronic device. ### Claim 15 (depends on 10) The device according to claim 10, wherein transmitting the multimedia data to the second electronic device using at least one of the two network links includes: in response to data amount of the multimedia data exceeding a set threshold, transmitting a first part data of the multimedia data to the second electronic device through the wired network link, and transmitting a second part data of the multimedia data through the wireless network link, wherein the second part data includes data other than the first part data in the multimedia data. ### Claim 16 (depends on 10) The device according to claim 10, wherein detecting that the first electronic device and the second electronic device are connected with each other through the physical bus includes: detecting that the first electronic device and the second electronic device are connected with each other by a physical bus that is consistent with a universal serial bus (USB) interface appearance standard. ### Claim 17 A non-transitory computer-readable storage medium, containing computer program for, when executed by a processor, performing a screen projection control method, the method comprising: detecting that a first electronic device and a second electronic device are connected with each other through a physical bus and confirming screen projection reference parameters based on the second electronic device and the physical bus, the screen projection reference parameters including, a wireless network that the first electronic device is located or a wireless network that the second electronic device is located; establishing a network link between the first electronic device and the second electronic device; obtaining multimedia data to-be-outputted by an output unit of the first electronic device; and transmitting the multimedia data to the second electronic device using the network link based on the screen projection reference parameters to allow the second electronic device to output the multimedia data. ### Claim 18 (depends on 17) The storage medium according to claim 17, wherein: establishing the network link between the first electronic device and the second electronic device includes establishing two network links between the first electronic device and the second electronic device; and transmitting the multimedia data to the second electronic device using the network link includes transmitting the multimedia data to the second electronic device using at least one of the two network links. ### Claim 19 (depends on 18) The storage medium according to claim 18, wherein establishing the two network links between the first electronic device and the second electronic device includes: establishing a wired network link using a first-type network card on the first electronic device and a first-type network card on the second electronic device wherein the physical bus is used as a transmission medium, and the first-type of network card includes a network card adapted to the physical bus; and establishing a wireless network link using a second-type network on the second electronic device and a second-type network card on the first electronic device. ### Claim 20 (depends on 19) The storage medium according to claim 19, wherein transmitting the multimedia data to the second electronic device using the at least one of the two network links includes: in response to a connection of the physical bus being maintained between the first electronic device and the second electronic device, using the wired network link to transmit the multimedia data to the second electronic device; and in response to the connection of the physical bus between the first electronic device and the second electronic device being disconnected, using the wireless network link to transmit the multimedia data to the second electronic device.