Always-On Display Handoff Between Dual Systems for Lower Power
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Solution Overview
Problem
The high power consumption of electronic devices, particularly wearable devices, due to frequent wake-ups of high-performance processors for always-on display functions, reduces battery life without a viable solution to maintain functionality with reduced power usage.
Innovation Solution
Implementing a dual-core dual-system architecture where a high-power-consumption first system sends a state entry command to a low-power-consumption second system to handle always-on display, allowing the first system to enter a dormant state, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first system (high-power-consumption system) continuously runs the always-on display function, then the display function is maintained with high performance, but the power consumption increases significantly
Solution Approach 1:
The patent divides the display system into two independent parts: a first system (high-performance) and a second system (low-power). The first system handles complex display rendering while the second system manages the always-on display state with minimal power consumption. This segmentation allows each system to operate in its optimal power regime, resolving the contradiction between display reliability and power consumption.
Solution Approach 2:
The patent introduces a communication interface as an intermediary between the first and second systems. The first system sends control commands and display content to the second system through this intermediary, enabling coordinated operation where the low-power second system executes the always-on display function based on instructions from the high-performance first system, thus maintaining functionality while reducing power usage.
2Productivity
If the first system frequently wakes up to handle always-on display, then display functionality is maintained, but battery life is reduced
Solution Approach 1:
The patent segments the system into a first system that can enter dormant state and a second system that maintains the always-on display function. This segmentation eliminates the need for the first system to frequently wake up, as the second system handles the display function independently when the first system is dormant, thereby extending battery life while maintaining display functionality.
Solution Approach 2:
The patent implements a copying mechanism where the first system creates a simplified representation (state entry command) of its display state and transfers it to the second system. The second system then displays a copy of the first application interface, allowing the first system to remain dormant without losing display functionality, thus reducing wake-up frequency and extending battery life.
3Use of energy by moving object
If a dual-core dual-system architecture is implemented, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent designs both the first and second systems to be capable of running the same applications and supporting the always-on display function. This multi-functionality allows the second system to take over the always-on display role from the first system, enabling power-saving operation while maintaining full functionality. The universality of both systems reduces the need for separate dedicated hardware, thereby limiting the increase in device complexity.
Data Source
AI summary
An always-on display method, a device, and a storage medium. The method is performed by an electronic device; the electronic device supports running a first system and a second system, and an operating power consumption of the first system is higher than that of the second system. The method includes: displaying, by the first system, a first application interface of a first application in an always-on display state; sending, by the first system, a state entry command to the second system, where the state entry command is configured to instruct the second system to enter the always-on display state; displaying, by the second system, a second application interface of a second application in the always-on display state based on the state entry command, wherein the second application and the first application support an always-on display state transition; and entering, by the first system, a dormant state.