ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,660, issued on March 18, was assigned to Cypress Semiconductor Corp. (San Jose, Calif.).
"Independently clocking digital loop filter by time-to-digital converter in digital phase-locked loop" was invented by Avri Harush (Herzeliya, Israel).
According to the abstract* released by the U.S. Patent & Trademark Office: "A time-to-digital converter (TDC) circuit includes phase error calculation circuitry to: determine phase error values based on a time difference between a input reference clock and a feedback clock of a digital phase-locked loop (DPLL) circuit, the input reference clock and the feedback clock being unsynchronized; and provide the phase error values to a digital loop f...