Interlaced Dual-Refresh Digital Display for Invisible Differential Flicker
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Solution Overview
Problem
Conventional digital displays with a single refresh frequency can cause invisible flicker at a differential frequency, which may have potential therapeutic effects but lack the ability to effectively mimic the effect of two visible light sources operating at different frequencies.
Innovation Solution
A digital display device with dual refresh frequencies, where pixels are divided into two groups operated at different refresh frequencies, and the display channels feed graphic content to these groups separately, with optional interlacing to ensure the frequency difference is imperceptible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single refresh frequency is used for all pixels, then the display structure is simple and easy to manufacture, but it cannot create the therapeutic differential frequency effect
Solution Approach 1:
The pixel array is divided into two distinct groups (first group and second group), where each group is refreshed at a different frequency. This segmentation enables the creation of a differential frequency effect for therapeutic purposes while maintaining a relatively simple display structure.
2Adaptability or versatility
If pixels are divided into two groups with different refresh frequencies, then a differential frequency effect is created for therapy, but the control system becomes more complex
Solution Approach 1:
The controller dynamically adjusts refresh frequencies for different pixel groups, switching between single-frequency and dual-frequency modes. This dynamic control enables the therapeutic differential frequency effect without requiring a permanently complex control system.
Solution Approach 2:
The controller periodically alternates between operating all pixels at the same frequency and operating pixel groups at different frequencies. This periodic action creates the therapeutic effect while allowing the controller to return to a simpler single-frequency mode during recalibration cycles.
3Object-affected harmful factors
If pixel-by-pixel interlacing is used, then the frequency difference effect is guaranteed to be invisible, but manufacturing cost increases
Solution Approach 1:
Instead of implementing full pixel-by-pixel interlacing, the patent uses row-by-row interlacing as a partial implementation. This approach provides sufficient invisibility of frequency differences for therapeutic purposes while significantly reducing manufacturing complexity and cost.
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
The dual refresh frequencies create an invisible differential frequency that can be used for therapeutic applications, such as treating Alzheimer's disease, by ensuring the brain phase-locks to this frequency, enhancing therapeutic efficacy.
Implementation Method 1
Some recent research suggests that using two visible light sources each operating at a difference frequency could create an invisible flicker at a differential frequency equal to the difference of these two frequencies
Implementation Method 2
By properly selecting the differential frequency, e.g., 40 Hz, such apparatus may be used for Alzheimer's disease treatment or prevention
Data Source
AI summary
A digital display device comprises a controller and a two-dimensional digital pixel panel. The pixels of the two-dimensional digital pixel panel are divided into a first group of pixels and a second group of pixels. The controller is configured to operate the first group of pixels at a first refresh frequency (F1) and to operate the second group of pixels at a second refresh frequency (F2), different than F1. The controller may support two display channels, where the first display channel feeds a graphic content to the first group of pixels at the F1 and the second display channel feeds the graphic content to the second group of pixels at the F2. The first group of pixels and the second group of pixels interlace each other.