Encoder duty-cycle error correction

Details Encoder duty-cycle error correction Encoder duty-cycle error correction

1991-06-17

1992-12-08

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Position determining

377 3, 377 24, 377 56, H03K 2110

Patent

active

051704161

ABSTRACT:
The present invention (50) corrects duty-cycle errors generated by imperfections in encoder scales and encoder detectors. A preferred embodiment of the invention operates by detecting successive transparent-to-opaque transitions of the encoder scale (20), calculating the distance between the transitions, dividing that distance by two, and generating a synthetic encoder pluse that is timed to represent a position 50 percent of the distance between the transparent-to-opaque transitions.

REFERENCES:
patent: 4233592 (1980-11-01), Leichle
patent: 4554674 (1985-11-01), Sakai et al.
patent: 4612656 (1986-09-01), Suzuki et al.
patent: 4628521 (1986-12-01), Nishimura et al.
patent: 4860051 (1989-08-01), Taniguchi et al.
patent: 4881248 (1989-11-01), Korechika
patent: 4979194 (1990-12-01), Kawano
patent: 5001732 (1991-03-01), Nomura et al.
patent: 5058145 (1991-10-01), Hauck et al.

Affiliated with

Also associated with

Rating

Encoder duty-cycle error correction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Encoder duty-cycle error correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoder duty-cycle error correction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-965613