Vehicle Control Apparatus Signal Authentication via Bit Pattern Counting

The patent applies preliminary action by performing a preliminary determination process before authentication to identify whether a received signal is a regular wireless signal from a portable terminal. The determination unit checks signal characteristics (such as signal strength, frequency range, or modulation type) in advance to filter out external noise signals. Only signals that pass this preliminary check are forwarded to the authentication unit, preventing unnecessary authentication processes and reducing power consumption while maintaining authentication reliability for legitimate signals.

The patent implements feedback by using the authentication result to refine the determination criteria. The determination unit learns from successful authentication cases and adjusts its filtering parameters to improve signal identification accuracy. The system continuously monitors the ratio of authenticated signals to total received signals and dynamically adjusts the sensitivity of the determination process, ensuring that legitimate signals are not misclassified as noise while maintaining effective filtering of external noise to reduce power consumption.