| 摘要 |
The aim of the invention is to develop a keyboard for compact mobile electronic appliances, said keyboard comprising an integrated signal detection element and enabling simple data input and simultaneous continuous control possibilities using a plurality of keys; an electronic inquiry mechanism for actuating the keys; and an evaluation method for a momentary key position during the continuous actuation of individual keys. To this end, keys which are applied in a mobile manner and provided with a spring suspension are mechanically coupled, on the lower side thereof, to a continuous strip conductor extending over at least one key and having a high electrical resistance, such that when the keys are actuated, the strip conductor comes into contact with another strip conductor, in the actuation position, said other strip conductor extending over all of the keys and having a low electrical resistance, and an analog-digital converter AD0 determines the electrical resistance or voltage drop between the strip conductor and an end of the strip conductor, said measuring value being unequivocally associated with a defined key and the actuation position on said key. |
