Coded data generation or conversion – Digital pattern reading type converter – Incremental
Reexamination Certificate
2005-10-18
2005-10-18
Young, Brian (Department: 2819)
Coded data generation or conversion
Digital pattern reading type converter
Incremental
Reexamination Certificate
active
06956505
ABSTRACT:
After cyclic original signals generated from a sensing element of an encoder are converted into digital signals, positions P(0) to P(n) in one period are obtained for each given period by means of a digital interpolator. If position data obtained immediately after a zero cross point is detected are P(0) and P(n) and if speed is fixed, an object should move on a straight line from a position P(0) to a position P(n). An actual detected position data P(m) is deviated from this straight line by D(m). This detection error D(m) and the detected position data P(m) are combined and stored in advance as reference data, and correction is carried out using the reference data every time position data is detected by the digital interpolator.
REFERENCES:
patent: 4998105 (1991-03-01), Takekoshi et al.
patent: 6191415 (2001-02-01), Stridsberg
patent: 6380927 (2002-04-01), Ostrum et al.
patent: 6399940 (2002-06-01), Cui et al.
patent: 2001/0010500 (2001-08-01), Lundin et al.
patent: 10-311741 (1998-11-01), None
patent: 1-156403 (1989-10-01), None
patent: 02-105013 (1990-04-01), None
patent: 02-195208 (1990-08-01), None
patent: 03-042508 (1991-02-01), None
patent: 04-359107 (1992-12-01), None
patent: 05-034145 (1993-02-01), None
patent: 05-087589 (1993-04-01), None
patent: 05-089480 (1993-04-01), None
patent: 05-296793 (1993-11-01), None
patent: 08-159808 (1996-06-01), None
patent: 63-015115 (1998-01-01), None
patent: 10-185624 (1998-07-01), None
patent: 2002-286506 (2002-10-01), None
patent: WO97/07382 (1997-02-01), None
patent: WO98/21553 (1998-05-01), None
patent: 00/28283 (2000-05-01), None
Notice of Grounds of Rejection for corresponding Japanese Application 2002-054764 dated Jan. 19, 2005.
Notice of Grounds for Rejection for Related Japanese Application No. 2002-054674 mailed Mar. 23, 2004.
European Search Report date Mar. 1, 2004.
Matsukane Tokuhisa
Taniguchi Mitsuyuki
Fanuc LTD
Young Brian
LandOfFree
Signal processing apparatus for encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal processing apparatus for encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal processing apparatus for encoder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3437260