Real time clock and method for recording data in real time clock
AssigneeEpson Toyocom Corporation
InventorsToru SHIROTORI, Toshiya USUDA
Life of this patent
Estimating the term…
Abstract
A real time clock for outputting data indicating a time of day includes: an event detection circuit for detecting that an event detection signal has been inputted from outside; a timing circuit for generating the time-of-day data according to a signal outputted from an oscillator circuit; a memory; and a control circuit for, if the event detection circuit detects input of the event detection signal, recording event data in the memory, the event data including additional data indicating an operating state of the real time clock and the time-of-day data generated by the timing circuit.
Claims11
A real time clock for outputting data indicating a time-of-day, comprising:
- an event detection circuit for detecting that an event detection signal has been inputted from outside;
- a timing circuit for generating the time-of-day data according to a signal outputted from an oscillator circuit;
- a memory;
- and
- a control circuit for, if the event detection circuit detects input of the event detection signal, recording event data in the memory, the event data including additional data indicating an operating state of the real time clock and the time-of-day data generated by the timing circuit.
A method for recording data in a real time clock having a function of recording data indicating a time of day of occurrence of an event in a memory, the method comprising
- recording, as event data, data including the time-of-day data and additional data, the additional data including a determination about an operating state of the real time clock at the time of occurrence of the event.
Dependencies are inferred from the claim text.