ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,481,039, issued on Nov. 25, was assigned to HOKUYO AUTOMATIC Co. LTD. (Osaka, Japan).
"Photoelectric sensor and optical rangefinder" was invented by Akihito Yamamoto (Osaka, Japan), Takahiro Kasahara (Osaka, Japan), Satoshi Arima (Osaka, Japan) and Tatsuhiro Momodori (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photoelectric sensor includes: a first signal processing chain including a first amplifier configured to amplify an output signal from a preamplifier by a first amplification factor A1 and a first binarization circuit configured to binarize an output signal from the first amplifier by a first threshold Vth1; and a second signal ...