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Yoshida; Yasushi
Fukuoka, JP
No. of patents:

Patent Number Title Of Patent Date Issued
8258459 Optical encoder and motor system comprising dual decentered annular slits September 4, 2012
An optical encoder includes a rotation disc, an annular slit, a light source, an absolute-value-related detecting unit, and a signal processing device. The annular slit includes a first annular slit and a second annular slit which are decentered in a mutually different direction. The
8148674 Optical encoder for detecting relative rotation angle for two members April 3, 2012
An optical encoder, with a simple structure, that can output a high-precision origin signal is provided. Rotary origin phase slits (112), which are formed into a pattern of linear slits arranged in parallel at equal pitches, are prepared for a rotary disk (110), while fixed origin ph
7496462 Encoding signal processing device and signal processing method therefor February 24, 2009
An encoder signal processing device comprising an A/D converter converting a periodic analog signal, a memory storing position detection error information and a computing unit including a position data calculator which calculates position data from the digital data and an error corre

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