| 摘要 |
<p>Disclosed herein are position determining apparatus (130) and conductor structures (172) or grids therefor. The conductor structure (40) for each axis includes a number of conductors (50) which are run in a serpentine-type path each with uniform repeat increment. The repeat increment, which is the spacing or span between one run and the next of the same serpentine-type conductor, are uniform for each conductor (but may change from conductor to conductor) and is constrained by a maximum repeat increment, or a minimum repeat increment. In the preferred embodiments, there is at least a constraint on the maximum repeat increment to provide noise immunity. The conductors are arranged for each axis of the grid in a pattern such that signals obtained for that axis may be processed to provide binary numbers in a Gray-type code, each unique to a small region of the active area in which the coil center is located.</p> |
