| 摘要 |
<p>The system uses planned timed periods of 'sleep' mode to extend battery operational time. The process for saving energy in a battery operated, portable device includes a first stage (10) of timing for setting at least one timing interval having a date of expiry which is determined with precision, in order to control the initiation of a future action. The precise indication includes a range of time within which the timing interval is due to expire. The second stage (11) includes synchronization of the dates of expiry of various timing functions. The third stage (12) includes a change into a standby mode in which supply to the circuit is cut during a period of inactivity. The final stage (13) is that of restoring normal full power operation, following the expiry of the timed standby period.</p> |
