POSITION DETECTION DEVICE

To obtain a position detection device capable of detecting highly accurate and robust position by suppressing affect of error detection of an edge, provided is a configuration for performing a validity determination of edges detected by binarizing an image signal (21) converted by a light-receiving...

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Bibliographische Detailangaben
Hauptverfasser: NAKAJIMA HAJIME, NASU OSAMU, AGRAWAL AMIT, THORNTON JAY E, TAKEYAMA HARUHIKO, TATEI YOSHINAO, NOGUCHI TAKUYA, SASAKI TORU, TAKEDA SHIGENORI, MUSHA TAKESHI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:To obtain a position detection device capable of detecting highly accurate and robust position by suppressing affect of error detection of an edge, provided is a configuration for performing a validity determination of edges detected by binarizing an image signal (21) converted by a light-receiving element (3) for receiving light irradiated from a light source (1) toward a scale (2) having a code pattern, and performing position detection after removing the edges determined to be invalid as edges that have been affected by foreign matter and the like among the edges on which the validity determination has been performed.