Patent ID: 9444484
Filing Date: 2016-09-13
CPC Classification: G01D,H03M

Claim Text:
1. A single encoder signal processing circuit, connected to encoder heads each outputting an encoder signal in accordance with a relative displacement with respect to a corresponding scale in such a way that signals can be transmitted to and received from the encoder heads, which processes encoder signals from the encoder heads, the single encoder signal processing circuit comprising: a processing unit that generates displacement information from the encoder signal; and a processing decision unit that decides at least one of content of processing for the encoder heads and content of processing on encoder signals read from the encoder heads after starting to read an encoder signal from one of the encoder heads; wherein: the processing on the encoder signals read from the encoder heads is the processing of a selection or change of the content of processing by the processing unit; and the processing decision unit selects content of operation by the processing unit using the encoder signal read from the encoder heads in accordance with the encoder signal read from the encoder heads as the selection of the content of processing by the processing unit.