Societe Suisse Pour L'industrie Horlogere Management Services S.a.

Pierre A Sauthier

Cyril Vuilleumier

Werner Fehr

An electrically driven timepiece is provided with a single user-actuated h button for controlling a modulo-three counter, the counter being utilized to control display advancing pulses derived from an oscillator and frequency divider. In a first state, the counter controls the display advancing pulses to advance the display at a normal rate. In a second state, the counter controls the display advancing pulses to advance the display at a rapid rate to effect a time correction. In a third state, the counter blocks all advancing pulses whereby the display remains constant. This enables the user to restart the advancement of the display at a precise desired instant. In an alternative embodiment, means are provided within the timepiece for automatically advancing the counter from the second to the third state when the display is advanced to a reference position such as the zero seconds position.

Electrically driven time piece with means for effecting a precise

A battery powered electronic timepiece of the type comprising an oscillat adapted to generate high frequency electric pulses, a frequency divider arranged to receive said high frequency electric pulses and to deliver low frequency electric pulses, a stepping motor adapted to be controlled by said low frequency electric pulses and to drive display means and a battery arranged to energize the oscillator, frequency divider and stepping motor, a condensor is coupled to the oscillator and frequency divider and a switch, which receives control signals from the frequency divider, is arranged to provide a low resistance path from the battery to the condensor in the intervals between motor stepping pulses, and a high resistance pass from the battery to the condensor during motor stepping pulses, whereby during motor stepping pulses the oscillator and frequency divider are energized substantially entirely from the condensor.

Battery powered electronic timepiece with voltage regulation

An electronic circuit for supplying energizing pulses of predetermined duion to an electric motor comprises a principal chain of frequency dividing elements, a bistable multivibrator, and an auxiliary divider circuit comprising a secondary chain of series connected binary elements arranged to shunt at least some of the elements in the principal chain.

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Bruegg, Switzerland

Pierre A Sauthier