ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,475,870, issued on Nov. 18, was assigned to Ef-Note Inc. (Hamamatsu, Japan).
"Electronic hi-hat" was invented by Yoshiaki Mori (Hamamatsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic hi-hat 1 has a rod movable up and down with an operation of a player. A top cymbal 2 has a striking surface that can be struck by the player. A bottom cymbal 3 comes into contact with or separates from the top cymbal 2. An optical sensor 7 detects separation dimension between the top cymbal 2 and the bottom cymbal 3. The optical sensor 7 detects separation dimensions of a plurality of areas that are displaced with inclinations of the top cymbal 2 and ...