US Patent Issued to Logitech Europe on July 7 for "IR timing calibration for a key switch" (Taiwanese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,676,612, issued on July 7, was assigned to Logitech Europe S.A. (Lausanne, Switzerland).

"IR timing calibration for a key switch" was invented by Jeremie Willemin (Zhubei City, Taiwan), Yu-Sen Chen (Hsinchu County, Taiwan) and Chi-Hsun Tsao (Taoyuan County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A keyboard system comprises a key structure including a key switch with a lighting element and phototransistor, and one or more processors that drive the lighting element for a first pulse duration. The output of the phototransistor is determined at the end of the first pulse duration, wherein the key structure is determined to be pressed when the ...