Display Logic Bypass for Power Reduction
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Solution Overview
Problem
Conventional display devices consume the same amount of power regardless of the visual content being processed, leading to inefficiency in power usage, especially for low entropy images with high redundancy.
Innovation Solution
A display logic bypass system that determines the level of entropy in images by counting consecutive identical pixels and powers down the display logic when a threshold is reached, using clock-gating to prevent clock signals from being output, thereby reducing power consumption while maintaining image output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display logic continuously processes pixel data to ensure accurate image rendering, then image display reliability is improved, but power consumption increases
Solution Approach 1:
The display logic operates dynamically by switching between active processing and bypass modes based on image entropy detection. When low entropy is detected (indicating redundant pixel data), the system transitions to bypass mode where pixel data passes through without full processing, reducing power consumption while maintaining display functionality. This dynamic adaptation resolves the contradiction between continuous processing for reliability and power savings.
Solution Approach 2:
The system changes the operational parameter of the display logic based on detected image characteristics. By monitoring pixel data entropy and adjusting the processing mode accordingly (full processing vs. bypass), the system optimizes power consumption while maintaining image display reliability. The parameter change is triggered when consecutive identical pixels exceed a threshold, indicating low entropy content.
2Loss of energy
If the display logic is powered down to reduce power consumption, then energy efficiency is improved, but image processing capability deteriorates
Solution Approach 1:
The pixel data processing path is segmented into two routes: a full processing path through the display logic and a bypass path that skips the display logic. The entropy detection mechanism determines which path to use, allowing the system to segment operations based on content requirements, thereby improving energy efficiency without completely sacrificing processing capability when needed.
Solution Approach 2:
An entropy detection mechanism acts as an intermediary between the pixel data input and the display logic. This intermediary analyzes the incoming pixel data to determine whether the display logic should be activated or bypassed, enabling intelligent power management that balances energy efficiency with processing capability based on actual image content requirements.
3Manufacturing precision
If the system processes every pixel through the display logic to maintain image quality, then image rendering accuracy is improved, but power consumption increases
Solution Approach 1:
Instead of processing every pixel through the full display logic pipeline, the system applies partial processing by bypassing the display logic when image entropy indicates redundant content. This partial action approach maintains sufficient image rendering accuracy for low-entropy regions while significantly reducing power consumption, avoiding the excessive processing of obviously redundant pixel data.
Data Source
AI summary
Provided is a method of reducing power consumption by a display device including a display logic for processing pixel data, and a display panel including a plurality of pixels, the method including receiving the pixel data corresponding to the plurality of pixels, determining whether a number of consecutive pixels of the plurality of pixels that correspond to identical data of the pixel data reaches a threshold number, and powering down the display logic when the number of consecutive pixels exceeds the threshold number.