Electronic timepiece
AssigneeETA A.G. Ebauches-Fabrik
InventorNorberto Perucchi
Life of this patent
Estimating the term…
Abstract
A motor normally drives a gear-train which controls the hands when the motor is acted upon by pulses it receives from a driving circuit and which come from a divider and a quartz oscillator. In order to set an alarm to the desired time, a stem is moved by means of a crown to a setting position. The gear-train is then driven by a pinion and a wheel meshing with one another. The alarm time is recorded by a counter circuit owing to pulses supplied by a contact of a rotary detector. This time is stored in a memory when a push button is pressed. After the hands are returned to a position indicating the correct time of day, the counter circuit counts the elapsed time, and the alarm is set off when a coincidence circuit detects coincidence between the count of the counter and the data stored in the memory.
Claims6
Electronic time-piece comprising:
- means for displaying time data;
- means for producing a time base signal;
- means for producing a first and a second manual command;
- means for producing a control signal;
- means responsive to said time base signal and to said control signal for driving said displaying means;
- means responsive to said time base signal and to said control signal for producing a displaying means position signal;
- means responsive to said first manual command and to said position signal for storing an alarm time signal;
- means responsive to said position signal and to said alarm time signal for producing a comparison signal;
- means responsive to said comparison signal for producing an alarm signal;
- and
- means responsive to said manual commands, to said control signal and to said time base signal for producing a difference signal:
- wherein said control signal producing means is responsive to said comparison signal, to said difference signal and to said manual commands for producing said control signal.
Dependencies are inferred from the claim text.