公开(公告)号：US20220245878A1

公开(公告)日：2022-08-04

申请号：US17727148

申请日：2022-04-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingchao ZHANG ,  Yan YAN ,  Lian WANG

IPC: G06T11/60 ,  G06F3/04886 ,  G06F9/451 ,  G06F21/57

Abstract: An image display method provided is applicable to the electronic device that includes a trusted execution environment (TEE) and a rich execution environment (REE). The TEE draws a first graph, and displays the first graph on a first layer in a display screen; and the REE draws a second graph, and displays the second graph on a second layer; and the first graph includes a transparent area and a non-transparent area, the non-transparent area includes content drawn by the TEE, a display area that is on the second graph and that corresponds to the transparent area includes content drawn by the REE, and when the first layer and the second layer are overlapped for displaying, the transparent area does not shield the content drawn by the REE. Richness of a trusted user interface (TUI) is improved by using a powerful drawing capability of the REE.