Method and apparatus for adjusting the accuracy of electronic ti

Details Method and apparatus for adjusting the accuracy of electronic ti Method and apparatus for adjusting the accuracy of electronic ti

1994-12-20

1998-02-10

Roskoski, Bernard

Horology: time measuring systems or devices

Regulating means

For compensation

368200, G04B 1720

Patent

active

057176612

ABSTRACT:
A method and apparatus for adjusting the accuracy of an electronic timepiece that includes an oscillator with a 2.sup.n frequency output, means for reducing the oscillator output frequency to a time keeping frequency, means for counting the time keeping frequency, and means for displaying the time corresponding to the count of the time keeping frequency. The timepiece is initially synchronized with a time standard. After a period of time has elapsed, the timepiece is resynchronized with a time standard and the error E accumulated by the timepiece since the previous synchronization is calculated. The accumulated error, E, is divided by the number of adjustment intervals elapsed since the previous synchronizing of the timepiece, N, to obtain an accuracy adjustment factor. Then, at a specified time interval during each subsequent adjustment interval, the timekeeping frequency is adjusted by the amount of the accuracy adjustment factor to produce a resultant adjustment interval which equals an ideal time period. Thus, the cumulative accuracy of the timepiece is maintained over the life of the timepiece.

REFERENCES:
patent: 3948036 (1976-04-01), Morokawa
patent: 4134254 (1979-01-01), Yasukura
patent: 4154053 (1979-05-01), Chetelat et al.
patent: 4155218 (1979-05-01), Wiget
patent: 4378167 (1983-03-01), Aizawa
patent: 4407589 (1983-10-01), Davidson et al.
patent: 4408897 (1983-10-01), Mutrux
patent: 4903251 (1990-02-01), Chapman
patent: 5274545 (1993-12-01), Allan et al.
patent: 5375105 (1994-12-01), Borowski

Affiliated with

Also associated with

Rating

Method and apparatus for adjusting the accuracy of electronic ti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for adjusting the accuracy of electronic ti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for adjusting the accuracy of electronic ti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2083275