Patent ID: 9435667
Filing Date: 2016-09-06
CPC Classification: G01B,G01D,H04N

Claim Text:
1. A position detecting apparatus, comprising: a seals comprising a plurality of pattern arrays formed in different cycles in a movement direction; an obtaining unit configured to obtain a plurality of signals in accordance with the plurality of pattern arrays; a first deriving unit configured to derive a temporal position of the scale with respect to the obtaining unit, based on the plurality of signals; a second deriving unit configured to derive a displacement amount of the scale with respect to the obtaining unit based on one or more signals of the plurality of signals; and a determinator configured to determine a determined position of the scale with respect to the obtaining unit based on the temporal position and the displacement amount, wherein the determinator determines the determined position based on a result of comparison between a difference between a first temporal position calculated by the first deriving unit at a first position and a second temporal position calculated by the first deriving unit at a second position and a displacement amount derived by the second deriving unit from the first position to the second position.