Touch Display Pen Signal Correction for RC Delay Compensation

The patent applies local quality by implementing position-specific phase delay values for different regions of the touch sensor. The sensing circuit divides the touch sensor into multiple areas and applies different phase delay corrections to each area, compensating for the RC delay variations that occur across different distances from the input terminal. This allows the large touch sensor to maintain uniform sensing sensitivity across its entire area.

The patent changes the timing parameter dynamically based on position. It introduces phase delay values that are added to the sensing timing signal depending on the detected position of the input object. The controller adjusts the sensing timing parameter (phase delay) according to the distance from the input terminal, thereby compensating for RC delay and maintaining signal accuracy across the entire touch sensor area.

The patent segments the touch sensor into multiple positional areas and assigns different phase delay values to each segment. This segmentation approach allows the system to maintain relatively simple circuitry while still applying position-specific corrections. The controller identifies which segment the input object is in and applies the corresponding phase delay, achieving accurate sensing without requiring complex continuous adjustment mechanisms.