Time-of-Flight Sensor Data Overflow Prevention

The patent applies preliminary action by checking whether the accumulated time-slot counting data has reached the maximum value before continuing to accumulate. The processing unit performs a judgment operation to detect if overflow is about to occur, and takes preventive action by clearing the accumulated data and generating an overflow indication signal. This prevents the harmful effect of data saturation that would otherwise cause signal-to-noise ratio degradation and measurement failure.

The patent implements feedback by continuously monitoring the accumulated time-slot counting data and comparing it against the maximum value threshold. When the data approaches or reaches the maximum value, the system generates an overflow indication signal and clears the accumulated data. This feedback mechanism ensures that the counting operation remains within the valid range, preventing measurement inaccuracy while maintaining an extended counting range through continuous accumulation cycles.

The patent applies self-service by enabling the processing unit to autonomously monitor its own accumulated data and detect when overflow is imminent. The system performs self-check operations to determine whether the time-slot counting data has reached the maximum value, and automatically clears the data and generates overflow indication signals without requiring external intervention. This self-service approach improves measurement reliability while minimizing the need for additional complex external monitoring circuits.