	US 12,242,866 B2
	Energy-efficient display processing method and device
Zhengyuan Hu, Xi'an (CN); Bing Li, Shenzhen (CN); Wen Liu, Xi'an (CN); Shuqiang Gong, Dongguan (CN); and Zichen Xie, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 17/780,866
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Nov. 17, 2020, PCT No. PCT/CN2020/129327 § 371(c)(1), (2) Date May 27, 2022, PCT Pub. No. WO2021/104104, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911194739.X (CN), filed on Nov. 28, 2019; and application No. 201911245165.4 (CN), filed on Dec. 6, 2019.
Prior Publication US 2023/0004406 A1, Jan. 5, 2023
Int. Cl. G06F 9/451 (2018.01); G06F 1/32 (2019.01); G06F 1/3234 (2019.01); G06F 1/3293 (2019.01); G06F 9/54 (2006.01)

CPC G06F 9/451 (2018.02) [G06F 1/3265 (2013.01); G06F 1/3293 (2013.01); G06F 9/542 (2013.01)]

15 Claims

6. An electronic device, comprising:

a first graphics processing subsystem comprising a first graphics processor, a first application processor, and a first memory;

a second graphics processing subsystem comprising a second graphics processor, a second application processor, and a second memory; and

a screen coupled to the first graphics processing subsystem,

wherein the first graphics processing subsystem is configured to:

instruct, by the first application processor, the first graphics processor to render a first graphical user interface (GUI);

render, by the first graphics processor, the first GUI;

determine, by the first application processor, that a first preset condition is met;

send, by the first application processor, after determining that the first preset condition is met, a first switching instruction to the second application processor, wherein the first graphics processing subsystem is configured to enter a sleep state after sending the first switching instruction,

wherein the second graphics processing subsystem is configured to:

receive, by the second application processor, the first switching instruction;

instruct, by the second application processor, after receiving the first switching instruction, a second graphics processor to render a second GUI;

render, by the second graphics processor, the second GUI;

determine, by the second application processor, that a second preset condition is met;

send, by the second application processor, after determining that the second preset condition is met, a second switching instruction to a first application processor configured to wake up the first graphics processing subsystem; and

render, by the first graphics processor of the first graphical processing subsystem, the first GUI,

wherein the second GUI and the first GUI correspond to different interface types,

wherein determine, by the first application processor, that the first preset condition is met comprises, in response to a first operation, determine that the first operation corresponds to the second GUI, wherein the second GUI corresponds to the second graphics processing subsystem, and

wherein determine, by the second application processor, that the second preset condition is met comprises, in response to a second operation, determine that the second operation corresponds to the first GUI, and wherein the first GUI corresponds to the first graphics processing subsystem.