Referenzsignalerzeugungsvorrichtung und Referenzsignalerzeugungssystem

Details

Veröffentlichungs-Nr.

EP2803947

Aktenzeichen

EP14001571

Anmeldetag

5. Mai 2014

Veröffentlichung

3. Dezember 2014

Rechtsraum

EP

IPC

G01D5/347G01D5/38G01D5/244G01D5/36

Abstract

A reference signal generation circuit generates a reference signal from a reading result of the reference point detection pattern. The first light-receiving element array includes a first light-receiving element that outputs a first signal, and a second light-receiving element that is disposed in a first direction of the first light-receiving element and outputs a second signal. A second light-receiving element array includes a third light-receiving element that outputs a third signal, and a fourth light-receiving element that is disposed in the first direction of the third light-receiving element and outputs a fourth signal. The second light-receiving element array is disposed in a second direction of the first light-receiving element array. The reference signal generation circuit outputs a reference signal that starts at a period when levels of the first and second signal become equal and ends at a period when levels of the third and fourth signal become equal.

Anmelder

Firma

Mitutoyo Corporation

Land

🇯🇵 Japan

Fachgebiete