| 摘要 |
A graphic tablet (100) includes a number of parallel electrodes (106-110) whereto a series of patterns (602-608) is presented in order to determine the position of a pen (104) relative to the electrodes. As a result of such presentation, a series (614) of code elements is formed on an electrode, which series can be picked up by the pen and is representative of the relevant electrode. When the patterns are suitably chosen, a short series of patterns suffices, so that the determination of the position requires less time. |
