Real-Time Clock Device
AssigneeSeiko Epson Corporation
InventorJun SHIINA
Life of this patent
Estimating the term…
Abstract
A real-time clock device includes an input terminal to which a reference pulse signal of a time is input, an oscillation circuit that outputs an oscillation clock signal, a clock count circuit that generates information on an internal time based on the oscillation clock signal, and a processing circuit that performs, in a case in which it is determined that a time lag occurs at the internal time when the reference pulse signal is input, frequency correction of the oscillation clock signal based on a time lag amount and a time interval of the time lag, and time correction of the internal time.
Claims8
A real-time clock device comprising:
- an input terminal to which a reference pulse signal of a time is input;
- an oscillation circuit that outputs an oscillation clock signal;
- a clock count circuit that generates information on an internal time based on the oscillation clock signal;
- and
- a processing circuit that performs, in a case in which it is determined that a time lag occurs at the internal time when the reference pulse signal is input, frequency correction of the oscillation clock signal based on a time lag amount and a time interval of the time lag, and time correction of the internal time.
Dependencies are inferred from the claim text.