Pointing position correcting method, pointing position...

Details Pointing position correcting method, pointing position... Pointing position correcting method, pointing position...

2006-04-25

2006-04-25

Martin, David (Department: 2837)

Electricity: motive power systems

Open-loop stepping motor control systems

C318S500000, C318S585000, C318S685000, C116S284000, C116S289000, C116S294000, C073S001370, C073S001880

Reexamination Certificate

active

07034496

ABSTRACT:
A method of correcting a pointing position of a pointer rotated by a stepper motor includes the steps of: performing a prereset operation in which the pointer is rotated to a reset operation starting position that represents a pointing position of the pointer which is shifted by a predetermined amount in a plus direction of a scale from a reset position where a pin which is rotated in conjunction with a rotation of the pointer abuts against a fixed stopper; after the prereset operation, performing a reset operation in which the pointer is rotated in a minus direction of the scale to the reset position; and after the reset operation, performing a correcting operation in which the pointer is rotated in the plus direction up to a reference pointing position which is indicated by previously stored reference pointing positional information.

REFERENCES:
patent: 5847475 (1998-12-01), Rauch et al.
patent: 6014075 (2000-01-01), Fujimori et al.
patent: 6731092 (2004-05-01), Shimazaki
patent: 6741058 (2004-05-01), Yamada et al.
patent: 6956351 (2005-10-01), Yamada
patent: 2004/0108829 (2004-06-01), Betts et al.
patent: 2002-5698 (2002-01-01), None
patent: 2002-139354 (2002-05-01), None

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