TOUCH SCREEN AND TOUCHING-OBJECT

摘要

An object (1) for touching a touch screen (2) is provided with a vibrator (11) for generating acoustic energy and an adjustor (12) for adjusting the acoustic energy in dependence of a user action to increase a number of possibilities to be offered. An action detector (13) may detect the user action and in response control the adjustor (12). The touch screen (2) is provided with a pulse detector (21-24) for detecting acoustic energy originating from the object (1) and a controller (25) for, in response to detected acoustic energy, determining an adjustment of the detected acoustic energy originating from the object (1). This controller (25) may further, in response to detected acoustic energy, determine a position at the touch screen (2) touched by the object (1). A converter (26) may convert the adjustment into a user action indication.