Mobile Device Gesture Interface Using Inertia Sensors

The patent replaces mechanical input devices (physical buttons and keyboards) with an inertia sensor-based gesture recognition system. The inertia sensor detects user gestures such as tilting, shaking, and rotating the device, converting mechanical motion into digital signals for input. This substitution eliminates the need for physical buttons while maintaining input capability, thus resolving the contradiction between input capability and device size.

The patent implements preliminary action by enabling direct gesture-to-function mapping. Common operations such as scrolling, selecting, and navigating are pre-configured to correspond to natural gestures (e.g., tilting up/down for scrolling, shaking to return to main menu). This eliminates the need for users to navigate through multiple virtual menu layers, as the desired action can be performed directly through a single gesture, thus improving navigation convenience while maintaining compact device size.

The patent applies universality by utilizing the inertia sensor for multiple functions beyond just gesture recognition. The same sensor is used for detecting device orientation, motion-based navigation, and various input gestures. This multi-functional use of a single sensor minimizes the additional hardware complexity while maximizing the ease of operation benefits, as one sensor component serves multiple user interaction purposes.