Timepiece having a divider chain with an adjustable division rate
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 26, 1984
Grant Date -
N/A
app pub date -
Nov 24, 1981
filing date -
Nov 26, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The timepiece includes a low frequency oscillator serving as time base andrranged to feed a first chain of frequency dividers having an adjustable division rate in order to display the time and a high frequency oscillator feeding a second chain of frequency dividers. During an imprecise period established by the first chain (3) reference pulses from the second chain (7) are counted thereby to establish a binary value (HF-DF) representing the amount of imprecision of the first chain in respect of the reference. This value is transferred into a memory in order to correct directly or indirectly the division rate of the first divider chain. There is thus obtained an oscillator having the stability of a high frequency oscillator but with energy consumption only slightly exceeding that of a low frequency oscillator.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully