Control device and electronic device comprising it

摘要: The control device comprises at least one emitter-receiver pair, a display and controller. pair radiation emitter receiver for receiving emitted by the reflected moving body located distance from pair. is positioned within emitter's emission field provides an electrical signal representative of received emitter. At symbol identifying action, opposite intersection cone receiver's reception cone, displayed. are outside area each symbol. controller action according to provided receiver. Each associated with when in front that identifies action.