Wireless Display Frame Rate Switching for Power Reduction
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Solution Overview
Problem
Existing wireless display technologies consume high power due to supporting high definition and high frame transmission rates, leading to increased power consumption in data transmission and reception, and fail to effectively manage power usage across different scenarios.
Innovation Solution
A data transmission method that allows electronic devices to switch between two display frame rates and corresponding modes in response to trigger events, reducing power consumption by adjusting the frame rate and transmission mode based on usage scenarios, such as idle, document editing, or high definition modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless display function supports high definition and high frame transmission rate, then picture quality and real-time performance are improved, but power consumption increases significantly
Solution Approach 1:
The patent applies dynamics by making the frame transmission rate adjustable rather than fixed. The system dynamically switches between a first frame rate (lower power consumption) and a second frame rate (higher picture quality) based on detected usage scenarios. This resolves the contradiction by allowing the system to adapt its performance characteristics to match actual needs, avoiding unnecessary power consumption while maintaining picture quality when required.
Solution Approach 2:
The patent changes the parameter of frame transmission rate based on different usage scenarios. By detecting whether the current scenario requires high picture quality (such as video playback) or not (such as document editing), the system adjusts the frame rate parameter accordingly. This parameter change strategy resolves the contradiction between picture quality and power consumption by optimizing the frame rate to match actual requirements.
2Speed
If wireless display function operates in real-time screen copy mode with high frame rate, then real-time performance is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the frame transmission rate based on detected usage scenarios. In scenarios where real-time performance is not critical (e.g., document editing), the system operates at a lower frame rate to save power. In scenarios requiring real-time performance (e.g., video playback), the system switches to a higher frame rate. This dynamic adjustment resolves the contradiction between speed and power consumption.
Solution Approach 2:
The patent implements periodic detection of usage scenarios and periodic switching between different frame rates. The system continuously monitors the current usage scenario and adjusts the frame transmission rate accordingly, creating a periodic pattern of high and low power consumption states that matches the periodic nature of different application requirements. This resolves the contradiction by avoiding continuous high-speed operation when not needed.
3Productivity
If software-based compression is used to reduce data size, then transmission efficiency is improved, but CPU load and system power consumption increase
Solution Approach 1:
The patent extracts and removes the software-based compression step from the transmission process. Instead of compressing data using CPU-intensive software algorithms, the system directly transmits the original screen data at adjusted frame rates. This elimination of the compression step resolves the contradiction by avoiding the high CPU load and associated power consumption while still achieving efficient transmission through frame rate optimization.
4Measurement precision
If high frame rate transmission is maintained continuously, then picture quality is improved, but battery lifetime decreases
Solution Approach 1:
The system dynamically adjusts the frame transmission rate based on detected usage scenarios to optimize the balance between picture quality and battery lifetime. In scenarios where high picture quality is not essential, the system operates at lower frame rates to conserve battery power. In scenarios requiring high picture quality, the system temporarily increases the frame rate. This dynamic adaptation resolves the contradiction by matching performance to actual needs over the battery's operational duration.
Solution Approach 2:
The patent changes the frame transmission rate parameter based on usage scenario detection. By switching between a first frame rate (for battery conservation) and a second frame rate (for picture quality), the system optimizes the trade-off between picture quality and battery lifetime. This parameter change strategy resolves the contradiction by avoiding continuous high frame rate operation that would deplete the battery unnecessarily.
Data Source
AI summary
A data transmission method and an electronic device are provided. A first electronic device having a display unit and a second electronic device having a processing unit communicate with each other wirelessly. The first electronic device receives data from the second electronic device for displaying on the display unit. The display unit of the first electronic device displays at a first display frame rate data transmitted from the second electronic device in a first mode. The first electronic device transmits, upon detecting a first trigger event, information associated with the first trigger event to the second electronic device. The first electronic device receives and displays data transmitted from the second electronic device in a second mode. The electronic devices can be automatically switched between the two display frame rates and the two modes in response to the first trigger event.