Patent ID: 11921466
Assignee: ETA SA MANUFACTURE HORLOGèRE SUISSE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device for updating a current date for a watch, said updating device comprising:
a memory configured to transmit the current date according to a perpetual calendar;
at least one date-disc including a first portion, representing dates 1 to 28, and a second portion representing dates 29 to 31;
a first sensor configured to transmit a first signal only when said first sensor detects said second portion;
a drive member configured to drive said at least one date-disc;
a second sensor configured to transmit a second signal when said second sensor detects the driving of said at least one date-disc by said drive member; and
a central unit configured to receive said second signal before comparing said first signal with the current date and controlling the driving of said at least one date-disc with said drive member if said second portion is different from the current date until said first sensor no more transmits the first signal.