Oscillator and electronic apparatus using the same

Details Oscillator and electronic apparatus using the same Oscillator and electronic apparatus using the same

2005-10-04

2005-10-04

Callahan, Timothy P. (Department: 2816)

Oscillators

Relaxation oscillators

Multivibrators

C331S149000

Reexamination Certificate

active

06952139

ABSTRACT:
An oscillator operated with an external power source or an external save power source is provided comprising: a clock signal generation unit for generating and outputting a clock signal; a power-on detection unit for detecting the power-on of the external power source; a power-off detection unit for detecting the power-off of the external power source; a running time count unit for counting the running time from a time of the power-on detection signal being input to a time of the power-off detection signal being input; storage means for storing accumulated running time up to a power-on time of the external power source; and a control unit for reading the running time at the time of the power-off detection signal being input, reading the accumulated running time from the storage means, adding the running time to the accumulated running time, and storing the addition result as a new accumulated running time in the storage means.

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