Method and apparatus for detection of position with correction of errors caused by errors in scale pitch

摘要

A method for detecting a position wherein a signal outputted from a position detecting scale is detected by at least two detectors, an output value of a preceding detector of these two detectors is stored anew at the time when an output value of a following detector of the two detectors comes near a scale position on which the output value of the preceding detector is once stored and becomes equal to the output value of the preceding detector, and a position detecting signal is outputted, these steps being repeated to detect the position.