| 摘要 |
The invention relates to an input device for entering characters or control instructions comprising a cylindrical body (4) with an axis (X), a selection element (5) which is rotatable about the cylindrical body and/or is adjustable in parallel with the axis, a plurality of measuring elements (6, 6*, 6°) which capacitively detect at least two charges on the cylindrical body (4) or the selection element (5) and at least one capacitively acting counter element (7, 7*, 7°) on conversely the selection element (5) or the cylindrical body, wherein, during an adjustment of the selection element relative to the cylindrical body, the at least one counter element is adjustable relative to the measuring elements and capacitance values (C1, C2, C3) which can be measured on the measuring elements change, and wherein the measuring elements and the counter elements are dimensioned in such a way and arranged relative to one another on the cylindrical body (or on the selection element in such a way that mutually differing capacitance values can be picked off at least one of the measuring elements as a function of the relative position. In other words, a plurality of measuring elements and counter elements which are arranged adjustably relative to one another are dimensioned and arranged in such a way that both a rotational movement of the selection element about the cylindrical body and a lateral axially parallel movement of the selection element or of a finger operating the selection element and sliding on the selection element can be unequivocally allocated a quite specific position on the circumference of the cylindrical body. In another embodiment there is an input device for entering characters or control instructions into a communication-unit with an input device (23) extending along an axis (X) with a cylindrical surface for entering characters or control instructions and with the control unit (C) for detecting the input of such characters or control instructions via input device (23) and for triggering at least a first function (f1) and/or a second function (f2) which is different to the first function depending on the entered characters or control instructions, with input device (23) along the axis (X) being subdivided into at least a first and a second input segment (23a, 23b) and with the control unit (C) being designed or controlled for triggering the first function (f1) in conjunction with input via the first input segment (23 a) and for triggering the second function (f2) in conjunction with input via the second input segment (23b). The communication-unit input device therefore allows the user to make a selection for entering at least two different functions via at least two corresponding input interfaces in the form at least two input segments. This therefore involves the triggering of different functions. |
