Electronic Ink Ghosting Removal via Frame Merging
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Solution Overview
Problem
Electronic ink screens face the challenge of ghosting due to precision issues during refresh, where the electric field control affects surrounding particles, causing them to deviate and resulting in unwanted image remnants on the screen display.
Innovation Solution
A method involving image merging of current and previous frame binarization images to identify ghosting positions, followed by pixel comparison to generate index data, which is used to control the display module's voltage and output a target image without ghosting, utilizing a blending layer merging algorithm and preset index data tables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electric field control is applied to refresh a certain pixel, then the pixel can be updated, but surrounding particles are affected and deviate causing ghosting
Solution Approach 1:
The patent applies preliminary anti-action by detecting ghosting in the previous frame and pre-compensating for it in the current frame. The ghosting detection module identifies particles that deviated in the previous refresh, and the electric field control module applies corrective electric fields in advance to counteract the expected ghosting effect, preventing it from manifesting on screen.
Solution Approach 2:
The patent implements feedback by creating a closed-loop control system. The ghosting detection module continuously monitors particle positions from previous frames, feeds this information back to the electric field control module, which then adjusts the electric field application strategy for the current frame to correct the detected ghosting while maintaining refresh performance.
2Manufacturing precision
If traditional ghosting removal methods are used, then ghosting can be removed, but resource loss increases and refresh speed decreases
Solution Approach 1:
The patent applies preliminary action by performing ghosting detection and compensation in advance during the frame preparation stage, before the actual refresh operation. By identifying ghosting patterns in the previous frame and pre-calculating corrective measures, the system removes ghosting proactively without adding delays to the refresh cycle, thus maintaining high refresh speed while improving ghosting removal quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Automatically removes ghosting during screen refresh, improving display quality by accurately positioning color particles and reducing the occurrence of unwanted image remnants, thus enhancing user experience without increasing resource loss or reducing refresh speed.
Implementation Method 1
adding a positive charge to the two substrates, the black particles move up, the white particles sink... adding a negative charge to the substrate, the white particles will move up, the black particles will sink
Data Source
AI summary
Disclosed are a method, a device and an equipment for removing ghosting based on an electronic ink screen and a storage medium. The method includes: performing image mergence on a current frame binarization image of the electronic ink screen and a ghosting image of a previous frame binarization image of the electronic ink screen, and obtaining a current frame merged image containing ghosting position information of a previous frame image; performing a pixel comparison operation on a previous frame merged image and the current frame merged image, and obtaining index data; and outputting a target display image without the ghosting according to the index data.