Touch-Screen Pedigree Chart Navigation Using Gesture-Based Zoom and Pan
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Solution Overview
Problem
Existing genealogical record display systems on touch-screen devices struggle to effectively visualize and navigate complex familial relationships, often limiting the amount of information displayed and making it difficult for users to understand the connections between records.
Innovation Solution
A method and system that utilize finger gestures to navigate genealogical records on a touch-screen device, displaying familial relationships through icons arranged according to familial lines, allowing users to zoom, pan, and rotate the chart to view relationships across multiple generations, and dynamically adjust the display to focus on specific family lines and levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If more genealogical records and relationship information are displayed on the touch-screen device, then the completeness of information is improved, but the readability and visual clarity deteriorate due to screen space limitations
Solution Approach 1:
The genealogical chart is segmented into multiple hierarchical levels (e.g., immediate family, extended family, distant relatives) that can be displayed separately. The system divides the complex relationship network into manageable segments that fit within the touch-screen display area, allowing users to navigate between segments to view different portions of the complete genealogy without overwhelming the display at once.
Solution Approach 2:
The system transitions from a two-dimensional flat display to a multi-dimensional hierarchical structure by implementing zoomable levels and collapsible/expandable family branches. This allows the genealogical data to be organized in depth (multiple generations) and breadth (different family lines) dimensions, enabling complete information representation while maintaining visual clarity through selective expansion and contraction of relationship branches.
2Loss of information
If detailed genealogical records are displayed, then information completeness is improved, but the device complexity and navigation difficulty increase
Solution Approach 1:
The system performs preliminary organization of genealogical data into structured hierarchical groups (family units, generations, relationship categories) before display. This pre-structuring allows users to navigate through pre-defined logical pathways rather than searching through unorganized data, reducing navigation complexity while maintaining access to detailed records through the organized structure.
Solution Approach 2:
The system introduces intermediate navigation elements such as summary views, family group headers, and relationship category indicators that mediate between the user and detailed genealogical records. These intermediaries provide contextual overview and structured access points, simplifying navigation by breaking down the complex data structure into manageable intermediate layers that guide users to specific detailed records.
3Loss of information
If the display shows multiple familial lines and generations, then the comprehensiveness of relationship visualization is improved, but the ease of operation deteriorates due to touch-screen navigation difficulty
Solution Approach 1:
The display system implements dynamic adaptability by automatically adjusting the level of detail, zoom level, and family line expansion based on user interactions and device orientation. The interface dynamically reconfigures the displayed information density and layout to optimize for different viewing conditions and user needs, maintaining comprehensiveness while adapting to operational constraints of the touch-screen device.
Solution Approach 2:
The genealogical information is organized in a nested hierarchical structure where family groups contain individuals, individuals contain relationship details, and broader family trees contain multiple family groups. This nesting allows users to navigate from general overview levels to specific detailed levels by progressively expanding nested elements, maintaining comprehensive relationship visualization while simplifying navigation through hierarchical drill-down rather than flat navigation.
Data Source
AI summary
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