Touch Gesture Recognition via Vibration Signal Correlation

The patent combines touch screen detection with vibration signal detection to create a composite recognition system. The touch event detector identifies touch location and duration, while the vibration signal detector captures mechanical vibration characteristics. Both detection results are integrated through a recognition unit that analyzes their correlation, enabling reliable distinction between intentional taps (producing vibration) and accidental touches (not producing vibration).

The vibration signal serves as an intermediary indicator between the physical touch action and the intended operation. Instead of directly interpreting touch events, the system uses vibration signals as a mediator to infer user intent. The vibration detector acts as an intermediary sensor that provides additional information about the nature of the touch, allowing the system to filter out accidental touches while maintaining ease of operation.

The vibration detector is designed to serve multiple functions: detecting vibration signals from intentional taps, filtering out accidental touches, and providing confirmation for key-press operations. By making this single component multi-functional, the patent reduces the need for additional specialized sensors or complex processing systems, thereby limiting the increase in device complexity while achieving improved reliability.

The system uses the vibration signal as a self-confirming indicator of intentional touch. The vibration detection unit automatically provides confirmation without requiring additional user input or complex processing. The recognition unit simply correlates the vibration signal with the touch event, allowing the system to self-verify user intent through the natural vibration produced by the touch action itself.