ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,227, issued on Nov. 11, was assigned to NTT Inc. (Tokyo).
"Self-calibration-function-equipped A/D converter" was invented by Tadashi Minotani (Musashino, Japan) and Kenichi Matsunaga (Musashino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An A/D converter includes: a first reference voltage unit that generates a temperature-compensated reference voltage; a second reference voltage unit that generates a second reference voltage calibrated with the reference voltage; an integration unit that generates an integrated voltage obtained by integrating unit voltages using any one of the reference voltage, the second reference voltage, and a ground ...