Window Overlay Flickering Prevention via Pre-captured Image Display

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Solution Overview

Problem

In existing electronic device technologies, when a main window overlays a following window due to differences in display levels, the following window experiences a flickering effect as its display level is reset to be higher than the main window, leading to a poor display effect.

Innovation Solution

The method involves capturing an image of the display content of the following window at regular intervals and displaying this captured image at the corresponding position within the main window, ensuring that the main window continues to display the content of the following window even when it overlays it, thus preventing flickering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the display level of the following window is reset to be higher than the main window to make it visible, then the following window becomes visible again, but visual flickering occurs resulting in poor display effect

Engineering Contradiction:
Improvevisibility of following windowVSAvoidvisual flickering
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by capturing the display content of the following window in advance before it becomes invisible, and storing this content for later display. When the following window is obscured by the main window, the pre-captured content is displayed at the original position of the following window, eliminating the need to reset display levels and preventing visual flickering.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses copying by creating a copy of the display content from the following window and displaying this copy at the position where the following window was located. This copy mechanism allows the main window to display the content without actually showing the following window, thus avoiding the flickering effect while maintaining visibility.

Inventive Principle:
Principle #26Copying

2Reliability

If the following window is displayed at a higher display level than the main window to ensure visibility, then the following window remains visible, but the main window cannot display content at the same position

Engineering Contradiction:
Improvevisibility of following windowVSAvoiddisplay area of main window
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The system captures the following window's content in advance and stores it, then displays this pre-captured content at the position where the following window would have been visible. This allows the main window to maintain full display area while still showing the following window's content, eliminating the need to reduce main window display area.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism that captures and stores display content, then retrieves and displays it at the appropriate position. This intermediary content management system allows both windows to coexist without interfering with each other's display areas, resolving the conflict between visibility and display area.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4092520B1Overlaid window display processing method and apparatus, and electronic device
Publication Date: 2025.05.14 HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO LTD
  • EP4092520B1 patent drawingFigure 1
  • EP4092520B1 patent drawingFigure 2
  • EP4092520B1 patent drawingFigure 3

AI summary

Provided are a window overlay display processing method and apparatus, and an electronic device. The method comprises: in a process of overlay-displaying a following window on a main window, capturing an image of display content of the following window according to an image capture time interval (S501); and displaying the captured image at a display position corresponding to the following window in the main window (S502). By means of the above method, when the display level of the main window is higher than that of the following window, the main window still displays the captured image corresponding to the display content of the following window. In this way, the user will think that he/she is continuing to view the display content of the following window, and will not feel flickering visually, thus improving the display effect of the following window and enhancing the user experience of viewing the following window.