Apparatus and method for detecting and handling accidental dialing on a mobile communications device

摘要

An apparatus and a method is presented for detecting the accidental dialing of telephone numbers on a mobile communications device. Accidental dialing is typically caused by pressing a redial button or a speed dial button. The system works by monitoring the outgoing and incoming voice levels in order to detect an absence of conversation in both directions for a specified time period. An alarm system is activated if an absence of conversation is detected. The alarm system sends a unique audio signal to the earpiece of the mobile communications device and waits for a response. The response might be pressing a particular key sequence or simply resuming the conversation. If a response is not detected after a short period of time, then the telephone call is automatically terminated. If a response is received, then, depending on user preferences, the monitoring system continues to function or can be disabled for the duration of the phone call.