Patent ID: 11948233
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A non-transitory computer readable storage medium having instructions stored thereon that, when executed by a processor, cause an electronic device to:
draw a first graph in a trusted execution environment (TEE);
cause the first graph to be displayed on a first layer in a display screen,
draw a second graph in a rich execution environment (REE); and
cause the second graph to be displayed on a second layer in the display screen, wherein the first layer is located above the second layer,, wherein
the first graph comprises a transparent area and a non-transparent area, the non-transparent area comprises content drawn in the TEE, a display area that is on the second graph and that corresponds to the transparent area comprises content drawn in the REE, and when the first layer and the second layer are overlapped for displaying, the transparent area does not shield the content drawn in the REE.