ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,231,138, issued on Feb. 18, was assigned to Caelus Technologies Ltd. (Hong Kong, Hong Kong).

"Analog-to-digital converter (ADC) with reference ADC path receiving attenuated input to generate error codes for second and third harmonics by counting negative and positive codes" was invented by Chi Fung Lok (Hong Kong, Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "An interleaved Analog-to-Digital Converter (ADC) has a reference channel receiving an attenuated analog input. The reference channel is also calibrated to remove capacitor-ratio mismatch, static, and dynamic mismatches and produces a linear replica of the data channels with negligible no...