Absolute encoder
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United States of America Patent
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May 17, 1983
Grant Date -
N/A
app pub date -
Jun 10, 1981
filing date -
Jun 17, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An absolute encoder comprising a sensor array, a code plate arranged in opposition to the sensor array and having a plurality of blocks in the direction of normal displacement, each block having an address track and a fine reading track, and an arithmetic unit for processing data of the code plate detected by the sensor array. Each of the blocks of the code plate has a reference track, an address track and a fine reading track. The fine reading track of each block has fine reading patterns which change in a direction crossing said direction of normal displacement.
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