Position encoder utilizer special gray code
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United States of America Patent
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-
Sep 17, 1991
Grant Date -
N/A
app pub date -
Oct 31, 1990
filing date -
Oct 31, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A position encoder includes a plurality of encoded elements or disks, each of which has indicia representative of a bit of a five bit digital word of a Gray code. Each disk is mechanically coupled to a lever or movable member. A sensor is positioned adjacent to each disk so that the sensors produce digital signals in response to the indicia. The indicia are arranged so that if only one bit of any word is changed, then the modified word will either be a) identical to a word representing an adjacent position of the lever, or b) different from all the words which represent lever positions.
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