Infrared Touch Scanning Adaptation for Writing Smoothness

The transmitting lights are divided into multiple groups (e.g., first group, second group, third group) that can be activated independently. Instead of scanning all lights sequentially in a single pattern, the system segments the scanning process into multiple parallel groups, allowing simultaneous scanning operations that maintain smoothness at higher speeds without increasing overall system complexity.

The scanning mode is made dynamic by automatically selecting between different scanning patterns based on detected writing speed. When writing speed exceeds a threshold, the system switches from first scanning mode (all lights) to second scanning mode (selected groups), and can further switch to third scanning mode (specific groups) based on multiple pen detection. This dynamic adaptation maintains writing smoothness across varying usage conditions.

Instead of scanning all transmitting lights in all situations, the system applies partial action by activating only the necessary scanning groups based on current writing conditions. When writing speed is high, only selected groups are scanned; when multiple pens are detected, specific groups are activated. This partial scanning approach maintains adequate writing smoothness while significantly reducing energy consumption compared to scanning all lights at all times.

The system changes the scanning parameter (number of active transmitting light groups) based on writing speed and pen count. By dynamically adjusting which groups are active, the system optimizes the balance between writing smoothness and energy consumption, using more lights only when necessary for high-speed or multi-pen scenarios.

By segmenting transmitting lights into groups that can be scanned in parallel or selectively activated, the system can increase scanning density for fast writing without proportionally increasing total scan time. Different groups can be processed simultaneously or in optimized sequences, maintaining higher frame rates even when more lights are active during fast writing scenarios.

The scanning density is dynamically adjusted based on detected writing speed. The system scans more transmitting light groups when fast writing is detected, but does so by selectively activating groups rather than uniformly increasing density across all lights. This dynamic approach maintains adequate frame rate while improving smoothness for fast writing conditions.