Title:
METHOD FOR CALIBRATION OF TIMEPIECES
Document Type and Number:
WIPO Patent Application WO/2014/023935
Kind Code:
A3
Abstract:
This invention relates to the calibration of timepieces that keep time using oscillators such as quartz resonators. Rather than measuring the frequency of the oscillator directly, externally calculating an appropriate correction value and storing in non-volatile memory (106) in the timepiece, time corrections (109) made by the user during the course of use are compared to a stored value (104) of the time of last correction in order to determine the amount to adjust correction value stored in non-volatile memory (106).
Inventors:
HOPTROFF RICHARD GEORGE (GB)
Application Number:
PCT/GB2013/052003
Publication Date:
April 03, 2014
Filing Date:
July 26, 2013
Export Citation:
Assignee:
HOPTROFF RICHARD GEORGE (GB)
International Classes:
G04G3/02; G04G3/04; G04G7/00
Foreign References:
| GB2296347A | 1996-06-26 | |||
| US5274545A | 1993-12-28 | |||
| EP1122622A1 | 2001-08-08 |
Attorney, Agent or Firm:
TUCKETT, William (45 Grosvenor Road, St Albans Hertfordshire AL1 3AW, GB)
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