Display Device Annotation Erasure via Mode Detection
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Solution Overview
Problem
Existing display systems require manual operation to erase annotations when the background image changes, such as during scrolling or switching applications, leading to inefficiency and distraction, especially in presentation scenarios.
Innovation Solution
A display device and method that automatically erases annotations by detecting mode changes from a drawing mode to a mouse mode or after a predetermined time has passed without image updates, using an input unit, detection unit, setting unit, drawing unit, and drawing control unit to manage image processing modes and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to erase annotations when the background image changes, then the annotation can be erased, but user effort increases and distraction occurs during presentations
Solution Approach 1:
The system performs preliminary detection of background image changes and automatically triggers annotation erasure before the user needs to manually erase. The detection unit continuously monitors background image updates, and when a change is detected, the drawing control unit automatically erases the annotation without requiring user intervention.
Solution Approach 2:
The system serves itself by automatically detecting background image changes and erasing annotations without external user commands. The detection unit and drawing control unit work together to create a self-service mechanism where the system manages its own annotation state based on background image monitoring.
2Extent of automation
If automatic erasure function is implemented, then user effort is reduced, but the system complexity increases
Solution Approach 1:
The detection unit serves multiple functions: it detects both background image changes and user input operations. The drawing control unit handles both drawing operations and erasure operations based on the same detection unit's output, reducing the need for separate dedicated components for each function.
Solution Approach 2:
The patent combines the detection unit and drawing control unit into an integrated system where the same detection unit monitors both background changes and user inputs, and the drawing control unit handles both drawing and erasing based on detected events, reducing overall system complexity.
3Loss of information
If annotation is preserved across background image changes, then annotation information is retained, but the annotation may no longer be meaningful when the background content changes
Solution Approach 1:
The detection unit provides feedback about background image changes to the drawing control unit, which then decides whether to erase the annotation. This feedback mechanism ensures that annotations are erased only when the background actually changes, maintaining the logical relationship between annotations and their corresponding background content.
Data Source
AI summary
A display device includes: an input unit which has image data inputted from an image supply device; a detection unit which detects a position of an indicator and generates indicator information including information about the detected position; a setting unit which sets a mode for processing the indicator information to a first mode or a second mode; a drawing unit which draws a second image generated on the basis of the indicator information and superimposes the second image on a first image generated on the basis of the inputted image data; a selection unit which outputs the indicator information to the drawing unit if the first mode is set and outputs the indicator information to the image supply device if the second mode is set; and a drawing control unit which erases the second image if a switching from the first mode to the second mode is carried out.