US 12,316,401 B2
Connecting method, apparatus of screen transmission device based on NFC, and computer device
Yuji Ouyang, Guangzhou (CN)
Assigned to GUANGZHOU SHIYUAN ELECTRONIC TECHNOLOGY COMPANY LIMITED, Guangzhou (CN); and GUANGZHOU SHIRUI ELECTRONICS CO., LTD., Guangzhou (CN)
Filed by GUANGZHOU SHIYUAN ELECTRONIC TECHNOLOGY COMPANY LIMITED, Guangzhou (CN); and GUANGZHOU SHIRUI ELECTRONICS CO., LTD., Guangzhou (CN)
Filed on Nov. 10, 2022, as Appl. No. 17/984,946.
Application 17/984,946 is a continuation of application No. PCT/CN2022/098886, filed on Jun. 15, 2022.
Claims priority of application No. 202110700036.0 (CN), filed on Jun. 23, 2021.
Prior Publication US 2023/0073492 A1, Mar. 9, 2023
Int. Cl. H04B 5/77 (2024.01); G06K 7/00 (2006.01); H04B 5/24 (2024.01); H04B 5/72 (2024.01)
CPC H04B 5/77 (2024.01) [G06K 7/0034 (2013.01); H04B 5/24 (2024.01); H04B 5/72 (2024.01)] 12 Claims
OG exemplary drawing
 
1. A connecting method of a screen transmission device based on Near Field Communication (NFC), comprising:
touching an NFC tag, wherein the NFC tag is configured to either contain network information of the screen transmission device or not contain network information of the screen transmission device;
identifying whether the NFC tag contains network information of the screen transmission device;
when the NFC tag contains the network information of the screen transmission device, acquiring the network information, and connecting with the screen transmission device according to the network information by calling a preset program to analyze the encrypted data, obtaining the network information, and calling the preset program to wirelessly connect with the screen transmission device according to the network information;
sending screen projection information to the screen transmission device, so that the screen transmission device projects the screen projection information onto a display screen for playing; and
when the NFC tag does not contain the network information of the screen transmission device, sending an acquisition request to the screen transmission device for encrypted data of the network information of the screen transmission device, receiving the encrypted data from the screen transmission device, and writing the encrypted data into the NFC tag,
wherein the encrypted data is formed by the screen transmission device encrypting its own network information after receiving the acquisition request.