Patent ID: 8890445

Claim:
A drive control device for performing drive control of an object, the drive control device comprising: a signal processing circuit configured to generate at least one non-interpolated digital encoder signal and at least one interpolated digital encoder signal, wherein generation of the at least one non-interpolated digital encoder signal and the at least one interpolated digital encoder signal is based on at least one light receiving signal inputted from at least one light receiving unit of an encoder, wherein the at least one non-interpolated digital encoder signal is generated by digitizing the at least one light receiving signal, wherein the at least one interpolated digital encoder signal is generated by digitizing and interpolating the at least one light receiving signal; and wherein the signal processing circuit outputs the at least one non- interpolated digital encoder signal and the at least one interpolated digital encoder signal; a position detection unit configured to detect a position of the object based on the at least one interpolated digital encoder signal inputted from the signal processing circuit; a speed detection unit configured to detect a speed of the object based on the at least one non-interpolated digital encoder signal inputted from the signal processing circuit; and a drive control unit configured to perform the drive control of the object based on the position detected by the position detection unit and the speed detected by the speed detection unit.