Velocity detecting apparatus and liquid ejecting apparatus
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United States of America Patent
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Jan 16, 2018
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Jan 13, 2017
filing date -
Sep 30, 2015
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Abstract
A controller performs: correcting a pre-correction pulse signal and outputting the corrected pre-correction pulse signal as a post-correction pulse signal that switches between third and fourth levels, the correcting including: switching the post-correction pulse signal from the third to fourth level when first or second condition is satisfied, the first condition being that the pre-correction pulse signal switches from the first to second level, the second condition being that duration of the third level exceeds a first reference period; and switching the post-correction pulse signal from the fourth to third level when both of third and fourth conditions are satisfied, the third condition being that duration of the fourth level exceeds a second reference period, the fourth condition being that the pre-correction pulse signal is on the first level; and calculating a relative moving velocity of the moving device based on temporal changes between the third and fourth levels.
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