ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,494, issued on Dec. 23, was assigned to REALTEK SEMICONDUCTOR CORP. (Hsinchu, Taiwan).

"Zoom analog-to-digital conversion circuit and analog-to-digital conversion method thereof" was invented by Wen-Tze Chen (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A zoom analog-to-digital conversion circuit includes a successive approximation register analog-to-digital converter (SAR ADC), a sigma-delta modulator, and a switch circuit. The SAR ADC includes a comparator and a dummy capacitor. A first connection terminal of the dummy capacitor is coupled to an input port of the comparator. The sigma-delta modulator includes an integrator, a qua...