Thermocompensated chronometer circuit

US10274899B2 · kind B2 · utility

Assignee

• ETA SA MANUFACTURE HORLOGÈRE SUISSE · CH

Inventors

• Thierry Bonnet · Geneva, CH
• Silvio Dalla Piazza · La Chaux-de-Fonds, CH
• Laurent Christe · Bienne, CH
• Francois Klopfenstein · Delémont, CH
• Emmanuel Fleury · Moutier, CH
• Yves Godat · Cornaux, CH
• Nicolas Jeannet · Neuchâtel, CH

Key dates

• Filing date: Dec 11, 2013
• Grant date: Apr 30, 2019
• Expiry date: Dec 11, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G04G3/04
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electronic module including at least one electric motor for driving an analog display, a clock module including a time base delivering a clock signal connected to a divider circuit, the divider circuit delivering a reference signal sent to a control circuit arranged to control the electric motor, the clock module further including a measuring and correction circuit arranged between the time base and the divider circuit and delivering an intermediate compensated signal. The time base, the compensation module, the divider circuit, and the control circuit are arranged in a same case to form the clock module.