Method for testing the rate of a quartz watch
US10295962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | May 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The method for test the rate of an electronic watch with a time base device (1) comprises three main steps for the test on test equipment. The time base device comprises at least one watch module (2) with a resonator (3) connected to an oscillator of an electronic circuit (4), which is followed by a divider circuit, which is controlled by an inhibition circuit, and which provides a divided timing signal for a motor. In a first step, a measurement is made of the frequency of the oscillator reference signal in at least one measurement period without inhibition. A second step is provided for acquiring the current inhibition value to inhibit a certain number of clock pulses in a subsequently inhibition period and to determine the inhibition value. Finally, a third step is provided for calculating the corresponding rate frequency of the watch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.