Multi-layer Drawing on External Display
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Solution Overview
Problem
Electronic blackboard devices struggle to maintain drawing performance when simultaneously displaying and interacting with screens from both the device and external devices, as existing technologies suffer from reduced responsiveness and inability to perform continuous drawing on received external images.
Innovation Solution
The electronic apparatus employs a processor to manage multiple layers for drawing, allowing simultaneous drawing on both the device's screen and received external images by generating a second layer for overlaying and processing user inputs without composite processing, thereby maintaining performance and enabling continuous drawing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the screen of the electronic apparatus and the screen of another external device are simultaneously displayed on the display screen through composite processing, then both screens can be displayed together, but the performance is reduced in the process of compositing and displaying
Solution Approach 1:
The patent segments the display system into multiple independent layers (first layer for external device screen, second layer for electronic apparatus screen). Each layer processes drawing operations independently, allowing simultaneous display of multiple screens without composite processing interference, thus maintaining drawing performance while achieving multi-screen display capability.
2Adaptability or versatility
If a screen received from an external device is displayed on the display, then the external content can be shown, but a drawing function cannot be performed on the screen simultaneously received from the external device while a drawing function is performed with respect to the screen provided by the electronic apparatus
Solution Approach 1:
The patent introduces a layer dimension to resolve the conflict. By creating a second layer for the electronic apparatus screen that can be overlaid on the first layer (external device screen), the system enables drawing operations on both screens simultaneously without interfering with each other, thus maintaining drawing functionality while displaying external content.
Data Source
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AI summary
An electronic apparatus and a controlling method of the electronic apparatus in which based on a first drawing touch input, a first drawing according to the first drawing touch input is displayed on a first layer for displaying a graphic, based on a first user input for receiving an image from an external device, the image is displayed on the first layer, based on a second user input for generating a second layer, a second layer for performing a second drawing is generated, and based on a user second drawing touch input, the second drawing is displayed on the second layer according to the second drawing touch input.