US Patent Issued to Microsoft Technology Licensing on Nov. 4 for "Digital phase-locked loops (PLL) including closed-loop time-to-digital converter (TDC) gain calibration circuits and related methods" (North Carolina, California Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,649, issued on Nov. 4, was assigned to Microsoft Technology Licensing LLC (Redmond, Wash.).

"Digital phase-locked loops (PLL) including closed-loop time-to-digital converter (TDC) gain calibration circuits and related methods" was invented by Ping Lu (Cary, N.C.), Minhan Chen (Cary, N.C.) and Shaishav A. Desai (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a calibrated digital phase-locked-loop (DPLL) circuit, during a normal operating mode, a control value provided to a digitally controlled oscillator (DCO) is updated by a feedback circuit to keep an output clock generated by the DCO synchronized with a reference clock. The feedback ci...