Touch Panel Auxiliary Tool for Precise Nautical Chart Symbol Manipulation
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Solution Overview
Problem
Existing touch panel devices for navigation route revision on nautical charts require multiple operations and can lead to difficulty in precise location specification due to finger coverage of symbols during drag operations.
Innovation Solution
A touch panel device with a display unit and controller that displays symbols on a map or nautical chart, featuring an auxiliary tool that appears on the screen to assist in moving symbols without direct touch, ensuring visibility and precise positioning by controlling the auxiliary tool's position and movement relative to the symbol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch panel device is used to move a symbol by dragging it directly, then the operation becomes simple and instinctive, but the symbol may be covered by the finger during the operation making precise location specification difficult
Solution Approach 1:
The patent introduces an auxiliary tool as an intermediary between the user's finger and the symbol. Instead of dragging the symbol directly with a finger, the user operates the auxiliary tool which then moves the symbol. This mediator prevents the finger from covering the symbol while still enabling intuitive drag operations, thus resolving the contradiction between ease of operation and measurement precision.
2Measurement precision
If multiple operations are required to revise the navigation route using a mouse or physical key, then the operation becomes complex, but the location can be specified precisely
Solution Approach 1:
The auxiliary tool serves as a mediator that combines the precision of multi-step operations with the simplicity of drag operations. By introducing this intermediate interface, the system allows users to perform precise location specification through intuitive dragging motions rather than requiring multiple discrete steps, thus improving ease of operation while maintaining measurement precision.
Data Source
AI summary
A touch panel device includes a display unit and a controller. The display unit displays, on a map or a nautical chart, a position acquired from a GNSS sensor and a symbol set on the map or the nautical chart. The controller controls, when an operation of specifying the symbol is detected, an auxiliary tool to appear on a display screen of the display unit, the auxiliary tool for recognizing a touch operation of moving the symbol.