Sensor Layer Flicker Cancellation via Phase-Synced Uplink Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices experience flickering due to signal collisions, which degrade image quality on their displays, as existing methods fail to effectively cancel out these flickers.
Innovation Solution
The solution involves generating uplink signals of different phases to cancel out flickering by creating an optical illusion effect, where a first flicker from a data signal and noise from a first uplink signal during one time frame cancel out a second flicker from noise during a subsequent time frame, using a control unit to output these signals in specific synchronization with the display's frame periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink signals are transmitted during display frame periods, then sensor layer can detect input device, but flickering occurs due to signal collision with data signals
Solution Approach 1:
The patent applies preliminary anti-action by generating uplink signals with specific phases that are designed in advance to cancel out the harmful flickering effect. The first uplink signal and second uplink signal are transmitted with different phases during alternating frame periods, creating a counteracting effect that eliminates the flickering caused by signal collision with data signals.
Solution Approach 2:
The patent implements periodic action by alternating between transmitting the first uplink signal during odd frame periods and the second uplink signal during even frame periods. This periodic switching of signal phases creates a rhythmic cancellation pattern that effectively neutralizes the flickering effect while maintaining continuous input detection capability.
2Object-affected harmful factors
If uplink signals are generated to cancel flickering, then image quality improves, but signal synchronization complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the uplink signal transmission into two distinct modes: the first uplink signal transmitted during odd frame periods and the second uplink signal transmitted during even frame periods. This segmentation allows each signal type to be optimized independently for flicker cancellation while simplifying the overall synchronization control through clear temporal separation.
Data Source
AI summary
An interface device includes an electronic device and an input device for communicating with the electronic device, wherein the electronic device includes a display layer, a sensor layer which is disposed on the display layer and senses a first input by the input device, a display driving unit for generating a vertical synchronization signal for driving the display layer, and a control unit for controlling the sensor layer, wherein the control unit outputs, in synchronization with a first vertical synchronization signal, a first uplink signal to the sensor layer and outputs, in synchronization with a second vertical synchronization signal, a second uplink signal having a phase different from a phase of the first uplink signal to the sensor layer.