Patent US2582843A successfully refreshed from Google Patents.
US3914931A
Expired / Lapsed
US
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Electronic timepiece
Assignee: Suwa Seikosha KK
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Filing: 1974-10-11
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Granted: 1975-10-28
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Expires: 1994-10-11
Abstract
Abstract An electronic timepiece adjustment circuit is provided for allowing adjustment of the division ratio of the divider circuit of an electronic timepiece by external switching circuitry. An electronic timepiece includes an oscillator circuit for producing a high frequency time standard signal and a divider circuit having an adjustable division ratio to produce a low frequency time standard signal in response to a high frequency time standard signal applied thereto. Adjustment circuitry is coupled to the divider means for adjusting the division ratio of the divider circuit to produce a low frequency standard signal of a predetermined frequency in response to the high frequency signal applied thereto. Switching circuitry is adapted to produce input data signals representative of a predetermined period of time. Calculator circuitry produces signals determinative of the amount of adjustment of the division ratio in response to the application of the input data signals thereto. A memory circuit is adapted to apply the division ratio adjustment signals to the adjustment means in response to said predetermined low frequency signal for each period of said predetermined low frequency signal produced by the divider circuit.
Inventors
- 👤 Yuki Tsuruishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:42
CPC Classifications
G; G04; G04G; G04G5/00; G04G5/02; G04G3/00; G04G3/02; G04G3/022
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
152 words
In an electronic timepiece having oscillator means for producing high frequency time standard signals; divider means having an adjustable division ratio for producing a low frequency time standard signal in response to a high frequency time standard signal applied thereto, and adjustment means coupled to said divider means for adjusting the division ratio of said divider circuit to produce a low frequency time standard signal of a predetermined frequency, the improvement comprising input means for producing input data signals representative of a predetermined period of time, calculator means for producing signals representative of the amount of adjustment of said division ratio in response to the application of said input data signal, memory means adapted to store said division ratio signals, said memory being adapted in response to said predetermined low frequency signal to apply said division ratio adjustment signals to said adjustment means during each period of said predetermined low frequency signal.
Claim 2
Dependent Claim
152 words
In an electronic timepiece having oscillator means for producing high frequency time standard signals; divider means having an adjustable division ratio for producing a low frequency time standard signal in response to a high frequency time standard signal applied thereto, and adjustment means coupled to said divider means for adjusting the division ratio of said divider circuit to produce a low frequency time standard signal of a predetermined frequency, the improvement comprising input means for producing input data signals representative of a predetermined period of time, calculator means for producing signals representative of the amount of adjustment of said division ratio in response to the application of said input data signal, memory means adapted to store said division ratio signals, said memory being adapted in response to said predetermined low frequency signal to apply said division ratio adjustment signals to said adjustment means during each period of said predetermined low frequency signal.
Claim 3
Dependent Claim
32 words
An electronic timepiece as claimed in claim 1 wherein said calculator means includes counters for counting the high frequency time standard signal for a predetermined period determined by said input data signals.
Claim 4
Dependent Claim
61 words
An electronic timepiece as claimed in claim 2 wherein operating means are adapted to receive signals from said counting means, and at a time determined by said signals from said input means, operate on said signals from said counting means, and produce signal representative of the amount of division ratio adjustment effected for each period of said low frequency predetermined signal.
Claim 5
Dependent Claim
78 words
An electronic timepiece as claimed in claim 2, wherein the predetermined period of time is representative of a multiple of the time for which adjustment of the division raTio can be effected in said divider means, and including a divider means for receiving signals from said counting means and at a time determined by input signals from said input means, divides said signals from said counter by an amount equal to said multiple, for application to said memory.
Claim 6
Dependent Claim
48 words
An electronic timepiece as claimed in claim 3, wherein said input means include prohibition means coupled to said counters, said prohibition means being adapted to prevent a change in the contents stored in said memory at a time other than a predetermined range counted by said counting means.
Claim 7
Dependent Claim
46 words
An electronic timepiece as claimed in claim 5, wherein said input means includes manually operated switching means for producing said input signals, said switching means being adapted to effect a change in the contents stored in said memory during said predetermined range of said counting means.
Claim 8
Dependent Claim
23 words
An electronic timepiece as claimed in claim 6, wherein said predetermined period of time represented by said input data signals is 24 hours.
Claim 9
Dependent Claim
22 words
An electronic timepiece as claimed in claim 6, wherein said predetermined low frequency time standard signal has a period of 1 second.
Claim 10
Dependent Claim
91 words
An electronic timepiece as claimed in claim 6, wherein said counters in said calculator means are three series connected counters, said first counter producing a signal for determining the accuracy with which said adjustment is to be effected in response to said high frequency time standard signal, said second counter in response to said signal from said first counter producing signals to be applied to said operator means, said third counter in response to said signal from said second counter applying signals to said prohibition means representative of the predetermined range.
Claim 11
Dependent Claim
28 words
An electronic timepiece as claimed in claim 9, wherein actuation of said manually operated switching means effects a resetting to zero of said first, second and third counters.
Claim 12
Dependent Claim
22 words
An electronic timepiece as claimed in claim 3, wherein said adjustment means are adapted to advance the count of said divider means.
Claim 13
Dependent Claim
22 words
An electronic timepiece as claimed in claim 3, wherein said adjustment means are adapted to retard the count of the divider means.
Claim 14
Dependent Claim
23 words
An electronic timepiece as claimed in claim 11, wherein said adjustment means are also adapted to retard the count of the divider means.
References Cited (Backward Citations)
US3823545A
Cited
US3813533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |