Ultrasonic Press-Sensing Assembly for Reliable Side-Edge Input

The patent replaces the traditional mechanical key system with an ultrasonic sensing system consisting of emitting elements, receiving elements, and reflecting pads. This substitution eliminates physical buttons while maintaining input functionality through detection of ultrasonic wave reflections caused by pressing actions, thereby improving ease of operation during horizontal display and gameplay without complicating the overall device structure

The patent introduces ultrasonic waves as an intermediary between the user's pressing action and the device's input recognition. The emitting element generates ultrasonic waves that reflect off the reflecting pad when pressed, and the receiving element detects these reflected waves. This intermediary mechanism enables accurate detection of intentional presses while filtering out accidental touches, resolving the operation convenience issue

The patent replaces mechanical key detection with ultrasonic wave-based detection. The emitting element sends ultrasonic waves toward the reflecting pad, and the receiving element detects changes in reflected wave intensity when the pad is pressed. This substitution provides more reliable input detection because it can distinguish between intentional presses (which cause significant density changes in the reflecting pad) and accidental touches (which cause minimal changes), thereby improving reliability without significantly increasing device complexity

The patent implements a feedback mechanism where the receiving element continuously monitors the intensity of ultrasonic waves reflected from the reflecting pad. When a pressing action occurs, the density of the reflecting pad changes, causing a detectable change in reflected wave intensity. The system uses this feedback to reliably determine whether an intentional input was made, filtering out false signals from accidental touches

The patent replaces mechanical keys with an ultrasonic sensing system that can detect multiple pressing positions and generate corresponding operation instructions. By arranging emitting and receiving elements in specific patterns and using reflecting pads at different locations, the system can distinguish between presses at different positions on the side edge, enabling complex operations such as volume adjustment, mute, camera activation, and other functions without adding physical buttons or complicating the device structure

The patent makes the ultrasonic sensing system universal by enabling it to perform multiple functions through software configuration rather than requiring separate hardware for each function. The same emitting and receiving elements can detect different pressing positions and generate different operation instructions, allowing a single sensing mechanism to replace multiple mechanical keys and provide versatile operation capabilities