ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,966, issued on April 22, was assigned to Realtek Semiconductor Corp. (HsinChu, Taiwan).

"Sigma delta analog-to-digital converter and method for eliminating idle tones of sigma delta analog-to-digital converter" was invented by Chun-I Kuo (HsinChu, Taiwan), Wen-Tze Chen (HsinChu, Taiwan) and Yi-Jang Wu (HsinChu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Sigma Delta analog-to-digital converter (ADC) and a method for eliminating idle tones of the Sigma Delta ADC are provided. The Sigma Delta ADC includes a loop filter, a quantizer, an adder and a digital-to-analog converter (DAC). The loop filter performs filtering on a difference between ...