Phase correction circuit of encoder signal

Details Phase correction circuit of encoder signal Phase correction circuit of encoder signal

2011-04-26

2011-04-26

Payne, David C. (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

Reexamination Certificate

active

07933373

ABSTRACT:
A position detector has a peak detector for detecting peak values of an A1signal and a B1signal serving as output signals of an analog to digital (AD) converter, an offset/amplitude correction section for generating an A2signal and a B2signal by correcting offsets and amplitude errors using the peak values detected by the peak detector, and a position data conversion section for converting the sinusoidal signals of an A phase and a B phase into position data.

REFERENCES:
patent: 6232595 (2001-05-01), Okamuro et al.
patent: 6456677 (2002-09-01), Hiramatsu et al.
patent: 09-042995 (1997-02-01), None
patent: 2001-296142 (2001-10-01), None
patent: 2003-057073 (2003-02-01), None
patent: WO 98/21553 (1998-05-01), None
Japanese Search Report for Application No. PCT/JP2007/056668, dated May 15, 2007.
English translation of Form PCT/ISA/210.

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