CAR AUDIO FUNCTION KEY INPUT DEVICE USING A SUPERSONIC WAVE SENSOR CAPABLE OF RECOGNIZING THE DISTANCE BETWEEN AN OBJECT AND AN INPUT TOOL AND MOTION OF THE OBJECT AND THE INPUT TOOL

摘要

PURPOSE: A car audio function key input device using a supersonic wave sensor is provided to input a function key for controlling a car audio function when an object or an input tool becomes close to a supersonic wave sensor of a car audio.;CONSTITUTION: A supersonic wave sensor unit(101) measures time for which a supersonic wave is reflected from an object which is within a fixed range. A distance recognizing unit(103) recognizes the distance between a supersonic wave sensor and the object according to the time. An audio controller(107) inputs a fixed function key for controlling a car audio according to a recognition result. The audio controller controls the car audio by inputting the function key.;COPYRIGHT KIPO 2012