[0065] According to a first wristwatch embodiment, the Raman oscillator is used intermittently, to complement a conventional oscillator of the prior art, for example a quartz oscillator. In this embodiment, the atomic oscillator transmits a timebase, which sets the quartz oscillator, corrects it and enables the precision thereof to be greatly increased over time. This intermittent operation of the atomic oscillator has the advantage of controlled additional consumption compared with a conventional wristwatch. Since the priming of this oscillator is controlled by the process described above, the performance of this first implementation in a wristwatch is very high. The atomic oscillator priming period is chosen according to a compromise between power consumption and precision of the wristwatch: the more this oscillator is used, the more precise the clock becomes, but the higher the power consumption. When the additional oscillator of lower precision is corrected by the atomic oscillator, the latter is turned off.
[0066] According to a second wristwatch embodiment, the Raman oscillator is used by itself as a replacement for the usual conventional oscillator, as a single timebase, and therefore used for permanent operation. The highest precision is obtained in this embodiment, but at the expense of greater power consumption.
Alltså en quarzklocka som reguleras av en ramanoscillator.