Parallel Module Preprocessing for Energy-Saving Return
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Solution Overview
Problem
The existing technologies face challenges in reducing the time required for an electronic device to return from an energy-saving mode, particularly when using high-speed serial interfaces that necessitate preprocessing for connection establishment between modules, as the return processing of latter-stage modules is delayed until the former-stage module's initialization is complete.
Innovation Solution
Incorporating a return factor detection unit and a return controller that allows the second module to start preprocessing for connection establishment in parallel with the return processing of the first module, enabling simultaneous initiation of return processing across modules connected via high-speed serial interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second module waits for the first module's initialization to complete before starting connection establishment preprocessing, then the initialization sequence is maintained, but the return time from energy-saving mode increases
Solution Approach 1:
The second module performs connection establishment preprocessing in advance, before the first module's initialization is complete. This preliminary action allows the connection establishment to be already in progress when the first module finishes initialization, thereby overlapping the initialization period with the connection establishment period and reducing the total return time from energy-saving mode.
2Loss of time
If the second module starts connection establishment preprocessing in parallel with the first module's initialization, then the return time from energy-saving mode is shortened, but the processing complexity increases
Solution Approach 1:
The system initiates connection establishment preprocessing at the second module before the first module's initialization completes. This preliminary action creates parallel processing paths that can be coordinated through existing initialization completion signals, avoiding the need for complex new coordination mechanisms while still achieving time reduction.
Data Source
AI summary
An electronic device includes plural modules; a return factor detection unit that detects a return factor causing return from an energy-saving state; and a return controller that causes the plural modules to start return processing upon detection of the return factor by the return factor detection unit. The plural modules include a first module and a second module that are connected by using a high-speed serial interface that needs preprocessing for establishment of connection without software, and the second module, which performs return processing upon receipt of a trigger of return from an energy-saving state through the first module, starts the preprocessing for establishment of connection using the high-speed serial interface in parallel with return processing of the first module.