ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,679, issued on July 1, was assigned to Beijing RuisiZhixin Technology Co. Ltd. (Beijing) and Alpsentek GmbH (Zurich, Switzerland).

"Delta image sensor with digital pixel storage" was invented by Yingyun Zha (Regensdorf, Switzerland), Roger Mark Bostock (Munsingen, Switzerland), Jian Deng (Zurich) and Yu Zou (Zurich).

According to the abstract* released by the U.S. Patent & Trademark Office: "A delta image sensor comprising an arrangement of pixels and a plurality of acquisition circuits corresponding to at least one pixel. Each acquisition circuit includes at least one sensor circuit comprising a photosensor configured to generate a sensor signal, VSIG, depending on a light signal...