Position sensing device

Details Position sensing device Position sensing device

1990-05-31

1991-12-17

Hix, L. T.

354439, 354452, 3542711, G03B 1300

Patent

active

050737902

ABSTRACT:
A position sensing device including a pattern applied on an objected to be moved. The pattern is composed of a pulse or pattern generating portion and a base portion. The pulse generating portion is periodically and alternately provided with a first element corresponding to a first logic level and a second element corresponding to a second logic level. The base portion is provided with the first or second element having a length different from the length of the first or second element in the pulse generating portion.

REFERENCES:
patent: 4572645 (1986-02-01), Yoshida et al.

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