ANALOGE ANZEIGE UND UHR FÜR KRAFTFAHRZEUGE

摘要

The watch has an analogue display unit (10) formed of a hand driven by a stepping motor and time base for providing time data (h, m) to a motor control and drive unit for controlling and driving the motor. A low voltage detector detects a lack of sufficient power from a main power source (20). A non-volatile memory e.g. electrically EPROM, is powered by an additional power source for containing the time data when a lack of sufficient power is detected, where the memory contains the stepping motor position data (`mpas) when the lack of sufficient power is detected. An independent claim is also included for a method of electromechanical synchronization of a hand and true time data for an electronic watch.