US Patent Issued to KYOCERA, University of Tsukuba on June 23 for "Sleep estimation device, sleep estimation system, wearable instrument, and sleep estimation method" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,061, issued on June 23, was assigned to KYOCERA Corp. (Kyoto, Japan) and University of Tsukuba (Tsukuba, Japan).

"Sleep estimation device, sleep estimation system, wearable instrument, and sleep estimation method" was invented by Takashi Abe (Tsukuba, Japan), Zhiwei Fan (Tsukuba, Japan) and Takahiro Watanabe (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stage of sleep is easily estimated. A sleep estimation device includes a first acquisition unit configured to acquire blood flow data, a generation unit configured to generate a frequency spectrum of the blood flow data by performing frequency analysis processing on the blood flow da...