| 摘要 |
<p>Provided are a clock signal outputting device and its control method, and an electronic device and its control method, which can enhance the precision of a clock signal while avoiding an increase in the entire power consumption even if a highly precise oscillator of a relatively high power consumption is used. The clock signal output device includes a quartz oscillator (41) for generating a reference clock signal (CL1), and generates and outputs an outputted clock signal (CL0) of a predetermined frequency from the reference clock signal (CL1). The clock signal output device further includes an atomic oscillator (42) for generating a clock signal (CL2) of a higher precision than that of the quartz oscillator (41), an intermittent time managing unit (47) for driving the atomic oscillator (42) intermittently, and a correction unit (46) for acquiring correction data to correct the displacement of the outputted clock signal (CL0) with reference to the clock signal (CL2), each time the atomic oscillator (42) is driven, thereby to correct the outputted clock signal (CL0) on the basis of that correction data.</p> |
