Document Annotation by Shape-Based Area Selection

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Solution Overview

Problem

The inefficiency of using a cursor to select document content for annotation in online documents, particularly on smaller screens, results in slow annotation generation speeds.

Innovation Solution

A method and device that utilize a drawing operation of specific shapes on a display interface to select target areas, allowing for annotation content input, which is then associated with the target content, thereby updating the document.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a cursor is used to select text for annotation, then the selection can be precise, but the annotation generation speed becomes slow

Engineering Contradiction:
Improveselection precisionVSAvoidannotation generation speed
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent segments the text selection process into two independent phases: (1) area selection through drawing operations that define a target region, and (2) text recognition within that region. This segmentation allows users to quickly define selection areas without manually positioning cursors, thereby improving annotation speed while maintaining precision through post-selection text recognition.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent replaces the mechanical cursor-based selection system with a drawing-based area selection system. Instead of manually moving a cursor to select text, users draw shapes (rectangles, circles, polygons) to define target areas, and the system automatically recognizes text within those areas. This substitution dramatically improves selection efficiency while maintaining accuracy.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If a cursor is used to select text for annotation, then the selection accuracy can be maintained, but the operation complexity increases

Engineering Contradiction:
Improveselection accuracyVSAvoidselection operation ease
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent divides the selection operation into two simple, sequential steps: (1) draw a shape to define the target area, and (2) let the system automatically recognize text within that area. This segmentation simplifies the user's task to just drawing, while the system handles the complex text recognition and selection accuracy, making the operation much easier while maintaining precision.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent replaces the complex mechanical cursor manipulation required for accurate text selection with a simple drawing gesture system. Users only need to draw shapes around target areas, and the system automatically handles text recognition and selection, significantly reducing operational complexity while maintaining or improving selection accuracy.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12493736B2Method and device for processing document and method and device for processing page
Publication Date: 2025.12.09 DINGTALK HLDG CAYMAN LTD
  • US12493736B2 patent drawing
  • US12493736B2 patent drawing
  • US12493736B2 patent drawing

AI summary

Method and device for processing document and method and device for processing page. The method may comprise: displaying a target document on a display interface (101); detecting an operation, which is executed by a user on the display interface, for drawing a specific shape, and obtaining a target area corresponding to the specific shape (102); obtaining an annotation content entered by the user for target content corresponding to the target area (103); and updating and displaying the target document based on an association relationship between the target content and the annotation content, so that the target document displayed on the display interface includes the annotation content associated with the target content (104). Therefore, the document annotation efficiency is improved.