Position detection device and position detection method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10768021
APP PUB NO 20190025092A1
SERIAL NO

16134729

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Abstract

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A position detection device includes a fixed element, a movable element, a plurality of first electrodes, a second electrode, a third electrode and a first detection circuit. The movable element is movable relative to the fixed element. The first electrodes are arranged on either the fixed element or the movable element, and the second electrode is on the other of the movable element or the fixed element. The first electrodes include two or more phases with electrical signals having mutually different phases. The third electrode is provided on the fixed element and opposing the electrode that is on the movable element while the movable element is in a prescribed position. The first detection circuit detects when the movable element is in the prescribed position based on electrical signals generated in the second and third electrodes in accordance with the electrical signals supplied to the first electrodes.

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Patent Owner(s)

  • YAMAHA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Natsume, Yoshihiro Shizuoka, JP 10 77
Suzuki, Yoshihiro Shizuoka, JP 119 1264
Ueda, Taku Shizuoka, JP 11 9

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