ALEXANDRIA, Va., June 17 -- United States Patent no. 12,315,531, issued on May 27, was assigned to Tridonic GmbH & Co KG (Dornbirn, Austria).

"Grid of luminaires" was invented by Istvan Bakk (Torokbalint, Hungary).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to grid (100) comprising at least one luminaire (101a-d), wherein at least one luminaire (101a-d) comprises one or more acoustic sensors (105), and preferably other sensors (103, 107); wherein the grid further comprises a controller (109) supplied with the output signals of said sensors (103, 105, 107), wherein the controller (109) is arranged for discriminating different sound categories in the output signals, including human voic...