Grey Value Mapping for Faster E-Ink Page Turns
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Solution Overview
Problem
Existing electronic devices face challenges in minimizing page turn time during content consumption, such as reading eBooks, without compromising the quality of the displayed content, as the number of grey values used affects the rendering speed and user experience.
Innovation Solution
The implementation of a mapping technique between a first set of grey values and a second set of grey values, reducing the number of grey values from sixteen to four, allowing for faster page transitions by associating multiple grey values from the first set with fewer values in the second set, and converting color values to grey values to display content in greyscale, thereby reducing page turn time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of grey values is increased to maintain content quality, then the rendering precision is improved, but the page turn time increases
Solution Approach 1:
The patent dynamically changes the grey value parameter based on content characteristics. For simple content like text, fewer grey values (e.g., 4 levels) are used to reduce processing time. For complex content like images, more grey values (e.g., 16 levels) are used to maintain quality. This parameter adaptation resolves the contradiction by adjusting precision requirements according to actual content needs.
Solution Approach 2:
The system dynamically adjusts the number of grey values used for rendering different pages or regions based on their complexity. The electronic device determines content characteristics and switches between different grey value configurations, making the rendering process adaptive rather than static. This dynamic approach allows fast rendering for simple content while preserving quality for complex content.
2Productivity
If the number of grey values is reduced to decrease page turn time, then the speed is improved, but the manufacturing precision deteriorates
Solution Approach 1:
The patent implements parameter changes by selecting different grey value counts (e.g., 4 vs. 16 levels) based on content analysis. When text-heavy content is detected, the system uses fewer grey values to maximize rendering speed. When image-rich content is detected, it switches to more grey values to preserve visual quality, thus maintaining high productivity without consistent quality loss.
Solution Approach 2:
The system applies different grey value configurations to different regions or types of content locally. Text regions may use fewer grey values for fast rendering, while image regions use more grey values for quality preservation. This local differentiation allows the system to optimize speed where possible while maintaining quality where necessary.
Data Source
AI summary
A content item to be displayed via a display of an electronic device may be associated with a first set of grey values or a set of color values. The electronic device may generate, maintain, or at least have access to one or more mappings that map the set of color values and/or the first set of grey values to a second set of grey values. Based on the one or more mappings, the electronic device may convert a color value of the set of color values or a first grey value of the first set of grey values to a second grey value of the second set of grey values. The content item may then be displayed utilizing the second grey value.