Electronic Device Display Synchronization for Multi-Screen Frame Stability
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Solution Overview
Problem
In multi-screen collaboration scenarios, electronic devices face frame freezing or frame loss when in a screen-off state, due to differences in cycles between drawing and synthetic synchronization signals.
Innovation Solution
A display method where an electronic device generates software synchronization signals for screen content drawing and synthesis from the same software signal source, ensuring both signals have the same cycle, even when the device is in a screen-off state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the hardware signal source is turned off to reduce power consumption when the device is in screen-off state, then power consumption is reduced, but frame freezing or frame loss occurs in multi-screen collaboration scenarios
Solution Approach 1:
The patent extracts the signal generation function from the hardware signal source and implements it through software signal sources. Specifically, the system uses software-generated drawing synchronization signals and synthetic synchronization signals instead of relying on hardware signals, allowing the hardware signal source to remain inactive while maintaining proper synchronization for multi-screen collaboration
Solution Approach 2:
The patent introduces a software signal source as an intermediary between the display system and the synchronization requirements. The software signal source generates both drawing and synthetic synchronization signals, mediating the coordination between screen content generation and display timing without requiring hardware signal generation
2Adaptability or versatility
If different software signal sources are used for drawing and synthesis signals, then signal generation flexibility is improved, but cycle differences cause frame freezing or frame loss
Solution Approach 1:
The patent merges the signal generation function into a single software signal source that produces both drawing synchronization signals and synthetic synchronization signals. This unified approach ensures that both signals share the same cycle and are coordinated, eliminating the frame freezing and frame loss issues that occur when separate signal sources with different cycles are used
Data Source
AI summary
In an example method, a first device establishes a connection for multi-screen collaboration to a second device. The first device turns off a screen in response to a first event. The first device draws screen content based on a first software signal in response to a second event, to obtain a screen content drawing result. Then, the first device synthesizes the screen content drawing result based on a second software signal, to obtain a screen content synthesis result. The first software signal and the second software signal are software synchronization signals that are generated by a same software signal source in the first device and that have a same cycle. Finally, the first device sends the screen content synthesis result to the second device.