Display Mode Selection Using Document Layout Length and Screen Reading Length
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Solution Overview
Problem
Conventional methods for determining the display mode of electronic documents are unreliable due to the diversification of screen sizes in electronic equipment, leading to suboptimal display effects, especially for fixed-flow-layout and PDF documents.
Innovation Solution
A method and device that determine the display mode by comparing the document layout length with the screen reading length, selecting between fixed-layout and flow display modes based on the original layout size and screen size, and optionally adjusting font size and word count for optimal visual perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If display mode is determined based on equipment type with conventional default methods, then implementation is simple, but display effect becomes suboptimal due to screen size diversification
Solution Approach 1:
The patent changes the determination parameter from equipment type to quantitative comparison between document layout length and screen reading length. By calculating the ratio of these two parameters and comparing against threshold values, the system dynamically selects the optimal display mode (fixed-layout, flow-layout, or hybrid) based on actual screen dimensions rather than predefined equipment categories, thereby improving display effect quality across diverse screen sizes.
2Stability of the object's composition
If fixed-layout mode is used to maintain consistent typesetting format, then document layout consistency is preserved, but adaptability to different screen sizes is reduced
Solution Approach 1:
The patent introduces dynamic display mode selection that adjusts between fixed-layout, flow-layout, and hybrid modes based on the calculated ratio between document layout length and screen reading length. This dynamic approach allows the system to maintain fixed-layout when the ratio indicates suitability (preserving layout consistency) while switching to flow-layout or hybrid modes when screen size diverges from the original layout dimensions (improving adaptability), thus resolving the contradiction between stability and versatility.
Solution Approach 2:
The patent makes the display system universal by implementing multiple display modes (fixed-layout, flow-layout, and hybrid) that can be selected based on screen characteristics. The hybrid mode specifically combines elements of both fixed and flow layouts, allowing the same document rendering system to universally accommodate various screen sizes and orientations while maintaining optimal reading experience across different device types.
3Adaptability or versatility
If flow-layout mode is used to adapt to screen size, then screen adaptability is improved, but layout consistency with original document is lost
Solution Approach 1:
The system dynamically selects between flow-layout and fixed-layout modes based on the ratio calculation. When the screen size significantly differs from the original document layout dimensions, flow-layout mode is activated to adapt to screen size. When the ratio indicates compatibility, fixed-layout mode is used to preserve layout consistency. This dynamic switching resolves the contradiction by applying the appropriate layout strategy contextually.
Solution Approach 2:
The patent introduces hybrid-layout mode as an intermediary between fixed-layout and flow-layout modes. This hybrid mode selectively applies fixed positioning to certain document elements (such as headings, captions, or complex figures) while allowing other elements (such as body text) to flow adaptively according to screen dimensions. This intermediary approach maintains partial layout consistency while achieving screen adaptability, resolving the contradiction for documents requiring both qualities.
4Reliability
If default display methods are used for diverse screen sizes, then implementation is straightforward, but optimal display effects cannot be achieved
Solution Approach 1:
The patent implements self-service by enabling the system to automatically determine the optimal display mode through quantitative comparison of document layout length and screen reading length. The calculation of the ratio and automatic selection against threshold values eliminates the need for manual user configuration or complex intervention, allowing the system to autonomously optimize display effects for any given screen size while maintaining ease of operation.
Data Source
AI summary
A method and a device for determining a display mode of an electronic document on a screen are provided. The method may comprise: obtaining the size of the screen and the original layout size of the electronic document; determining, from the obtained original layout size, a document layout length in a layout direction of the original layout of the electronic document; determining, from the obtained size of the screen, a screen reading length in a reading direction of the screen; and comparing the document layout length with the screen reading length to determine whether a fixed-layout display mode or a flow display mode shall be selected to display the electronic document.