Fingerprint Sensor Defect Tracking for Recognition Reliability

The terminal implements a feedback mechanism by detecting the number of damaged capturing modules and comparing it with the preset threshold. When the threshold is reached, the system provides feedback by prohibiting fingerprint recognition. The patent improves this by adding a revision step where the terminal revises the number of historical defect dots based on current detection results, creating a closed-loop feedback system that adjusts the prohibition decision dynamically.

The system transitions from a static threshold-based prohibition mechanism to a dynamic adjustment mechanism. The number of historical defect dots is not fixed but is revised based on current detection results. This dynamic approach allows the system to adapt to changing conditions, preventing permanent prohibition when temporary anomalies occur and maintaining recognition efficiency.

The terminal performs preliminary detection of the number of damaged capturing modules before attempting fingerprint recognition. By detecting and evaluating the defect count in advance, the system makes informed decisions about whether to proceed with recognition or prohibit it, improving identification accuracy without requiring complex real-time monitoring during the recognition process itself.

The system uses its own detection capabilities to monitor and update the number of damaged capturing modules autonomously. The terminal self-updates the historical defect dots based on current detection results without requiring external intervention or complex external systems, maintaining measurement precision while controlling system complexity.