Mobile Chart Reference Diagram Editing via Touch Control Region

The patent replaces the mechanical process of screenshotting, printing, and manual drawing with a digital touchscreen interface. Users can directly interact with the chart display on the mobile terminal screen, selecting drawing tools and creating reference diagrams through touch operations, thereby eliminating the need for physical printing and manual drawing while reducing time consumption and operational complexity.

The patent creates a digital copy of the chart display that can be directly annotated on the screen. Instead of requiring users to print physical copies, the system provides a virtual canvas overlaying the chart, allowing users to draw reference diagrams, trend lines, and annotations directly on the digital display, thus eliminating the copying and printing steps entirely.

The patent substitutes manual drawing tools (pencils, rulers) with digital drawing tools implemented through the mobile terminal's touchscreen interface. The system provides virtual drawing instruments including line tools, shape tools, and annotation tools that users can select and operate directly on the chart display, maintaining analysis accuracy while dramatically simplifying the operational process.

The patent implements dynamic drawing capabilities where users can freely adjust, modify, and delete reference diagrams after creation. The system allows real-time modification of drawing parameters, positions, and styles, providing flexibility and ease of correction that rigid manual drawing on paper cannot match, thus reducing operational complexity while maintaining precision.