| 摘要 |
Apparatus for producing a virtual spatial array comprises a number of individual cells comprising a number of field transducers 9 producing fields which are scanned cyclically by a scan controller 10 to identify and record the position of a disturbance in the array. A position register 11 records the position of the cell or cells in which the disturbance has taken place and produce an output, representative of the position or positions. The arrangement may be used for example to produce a virtual keypad for a phone, for a computer mouse or in a three dimensional security passed panel. The field transducers produce magnetic, electric or electrostatic fields wherein an inductive disturbance, radio disturbance or capacitive disturbance is detected respectively. |
