ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,714, issued on April 8, was assigned to Apple Inc. (Cupertino, Calif.).
"Current-mode thermal sensor" was invented by Matthias Eberlein (Holzkirchen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A temperature sensor circuit is disclosed that uses multiple bipolar devices to generate a proportional to absolute temperature (PTAT) current and a complementary to absolute temperature (CTAT) current. A difference in the PTAT and CTAT current is evaluated using a feedback loop of an amplifier circuit which alternatively charges and discharges a capacitor to create a time-varying analog signal. A comparator circuit compares the analog signal to th...