Graph Display Device Seamless Variable Editing
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Solution Overview
Problem
Existing graph display devices for scientific calculators do not efficiently allow users to switch between graph display and editing of function formula variables without returning to the initial display state.
Innovation Solution
A graph display device that switches from a first display state showing multiple function formulas to a second state displaying a graph, and upon detecting a specific operation, determines if the selected function formula includes definition information. If it does, the device transitions to a third state displaying the graph alongside an area for editing the definition information without reverting to the first state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the device switches from the first display state to the second display state when a graph display operation is detected, then the graph can be displayed on a full screen, but the user cannot efficiently edit function formula variables without returning to the first display state
Solution Approach 1:
The patent merges the graph display function and the function formula editing function into a single integrated display state (the third display state). This allows users to access both the graphical representation and the editable formula simultaneously, eliminating the need to switch between separate display states for viewing and editing purposes.
Solution Approach 2:
The third display state serves multiple functions simultaneously: it displays the graph visually while also providing access to editable function formula information. This multi-functional display state allows users to both view the graph and edit the underlying formula without leaving the graph display context, making the system more versatile and efficient.
2Ease of operation
If the device provides a dedicated area for editing definition information in the third display state, then editing functionality is improved, but the display layout becomes more complex
Solution Approach 1:
The third display state is segmented into distinct functional areas: a graph display region for visualizing the function and an editing region for modifying the function formula. This segmentation allows each area to serve its specific purpose independently while maintaining an organized and manageable display structure that doesn't overwhelm the user with complexity.
Data Source
AI summary
A graph display device includes a controller: when specific function formula information is selected in a first display state in which a plurality of pieces of function formula information is displayed on a display unit and when an operation of an instruction to display a graph corresponding to the selected function formula information is detected, switches a display state of the display unit from the first display state to a second display state in which a graph of a function formula included in the selected function formula information is displayed; when a first predetermined operation is detected in the second display state, determines whether or not the function formula included in the selected function formula information includes definition information in which a value input to a variable included in the function formula is associated with the predetermined variable; and when it is determined that the definition information is included, switches to a third display state in which a screen including the graph and an area for designating the value in the definition information is displayed, without switching the display state of the display unit to the first display state.