US 12,461,248 B1
Simple oscillator with holdover
Kiomars Anvari, Walnut Creek, CA (US)
Assigned to Kiomars Anvari, Walnut Creek, CA (US)
Filed by Kiomars Anvari, Walnut Creek, CA (US)
Filed on May 2, 2025, as Appl. No. 19/197,531.
Claims priority of provisional application 63/642,895, filed on May 6, 2024.
Int. Cl. G01S 19/21 (2010.01); G01S 19/23 (2010.01)
CPC G01S 19/215 (2013.01) [G01S 19/235 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A Self-Disciplined Oscillator (SDO) comprising:
a voltage-controlled oscillator (VCO);
a Reference Signal (RS);
a counter; and
a Self-Disciplined Circuit (SDC);
said VCO is disciplined and controlled by at least one of said RS, and said SDC when said RS is not available;
said RS is an output of at least one of a GPS (global positioning system) receiver, an IEEE1588 (Institute of electrical and electronic engineers) precision time protocol (PTP), and a signal defined by an organization;
said output is at least one of a PPS (pulse per second), and a time-of-day (TOD);
said counter is incremented by said VCO and contains at least one of said TOD, and a number;
said SDC is a delay block with an input port and an output port;
said input port sends a trigger signal to said delay block and records a send by at least one of a Ts that is said TOD, and a Ns which is said number;
said output port detects said trigger signal and records a detection by at least one of a Td that is said TOD, and a Nd which is said number;
said VCO when said RS is not available uses at least one of a difference between said Td and said Ts, and a difference between said Nd and said Ns to calculate a drift and adjust its output to a desired value.