The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1981
Filed:
Oct. 27, 1978
Michel Vermot, Les Ponts-de-Martel, CH;
Ebauches Electroniques SA, Marin, CH;
Abstract
An electronic timepiece with an alarm device, having a digital display unit for indication of the actual time and a memorized time of alarm, and an analog display unit driven by a stepping motor. In such a timepiece, the alarm signal is produced from signals delivered by the frequency divider and is transmitted to an electroacoustic transducer when coincidence exists between the time as measured by the timepiece and the memorized time of alarm. During the signal, the consumption of current is relatively high and is further increased when a driving pulse of the stepping motor is superimposed upon the alarm signal. Such a peak of current is undesirable because the magnetic field produced by the excitation coil of the electroacoustic transducer may disturb the correct functioning of the motor. A solution to this problem is to shift the alarm pulses in time with respect to the driving pulses so that they never appear simultaneously. To this end, the timepiece includes an electronic circuit which is enabled by an alarm logic circuit, and which receives signals from the frequency divider for delivering an alarm signal, at the time of alarm, such that the alarm signal is shifted in time with respect to the driving pulses of the stepping motor.