Patent ID: 11899407
Assignee: OROLIA DEFENSE & SECURITY LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A real time clock integrated module for outputting data indicating a time-of-day and suitable for use in a device, said real time clock integrated module comprising:
a high-precision oscillator or atomic clock having an accuracy of 50 ppb (parts per billion) or better;
a timing circuit configured to generate time-of-day data according to a clock signal outputted from said high-precision oscillator or atomic clock; and
a primary power source or a connection for connecting to a primary power source to provide power to the timing circuit when the device is powered up; and
a back-up power source configured to allow the timing circuit to maintain time when the device in which the real time clock integrated module is implemented is powered off,
said timing circuit comprising a real time clock and a logic device storing a timestamp, said timing circuit being configured to, when the device is powered off, update the timestamp value based on the high-precision oscillator or atomic clock and generate a time reference signal, said timing circuit being also configured to provide to the device said updated timestamp value and said time reference signal that the device can use as a time reference to reinitialize a timing system of the device once the device is powered up again.