Patent US2265546A successfully refreshed from Google Patents.
US3795099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic timepiece having a chronograph mechanism
Assignee: Individual
•
Filing: 1972-02-04
•
Granted: 1974-03-05
•
Expires: 1992-02-04
Abstract
Abstract An electronic timepiece having a pulse generator for generating a high frequency time standard signal and a first divider for dividing the time standard signal into low frequency timing signals. A second chronograph divider divides the time standard signal of said pulse generator starting at a first time and ending at a second time independent of the operation of said first divider to produce chronograph timing signals. A digital display means is provided for selectively digitally displaying the present time represented by said first divider timing signals or elapsed time represented by said second divider chronograph timing signals.
Inventors
- 👤 Y Tsuruishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
G; G04; G04F; G04F10/00; G04F10/04; G04G; G04G9/00; G04G9/08; G04G9/087
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
205 words
An electronic timepiece comprising pulse generator means for generating a relatively high frequency time standard signal; time keeping divider means for producing time keeping timing signals in response to said time standard signal; chronoGraph divider means for producing low frequency chronograph timing signals in response to said time standard signal, said chronograph divider means including a plurality of series-connected divider stages, a group of which produces said chronograph timing signals; means for selectively starting a first stage of said chronograph divider means producing a signal of a frequency greater than that of said chronograph timing signals at a time t1 and stopping said chronograph divider means first stage at a time t2independent of the operation of said time keeping divider means, resetting means coupled to said chronograph divider means for selectively and simultaneously resetting all of said chronograph divider means stages to a zero state; digital display means; and controlled gate means for the selective connection of one of said time keeping divider means and said group of chronograph divider means stages to said digital display means for the selective digital display of present time or elapsed time (t2 - t1) in response to said time keeping timing signals or said chronograph timing signals respectively.
Claim 2
Dependent Claim
205 words
An electronic timepiece comprising pulse generator means for generating a relatively high frequency time standard signal; time keeping divider means for producing time keeping timing signals in response to said time standard signal; chronoGraph divider means for producing low frequency chronograph timing signals in response to said time standard signal, said chronograph divider means including a plurality of series-connected divider stages, a group of which produces said chronograph timing signals; means for selectively starting a first stage of said chronograph divider means producing a signal of a frequency greater than that of said chronograph timing signals at a time t1 and stopping said chronograph divider means first stage at a time t2independent of the operation of said time keeping divider means, resetting means coupled to said chronograph divider means for selectively and simultaneously resetting all of said chronograph divider means stages to a zero state; digital display means; and controlled gate means for the selective connection of one of said time keeping divider means and said group of chronograph divider means stages to said digital display means for the selective digital display of present time or elapsed time (t2 - t1) in response to said time keeping timing signals or said chronograph timing signals respectively.
Claim 3
Dependent Claim
127 words
An electronic timepiece as recited in claim 1, including memory means disposed intermediate said chronograph divider means and digital display means adapted for selective momentary connection to said chronograph divider means for detecting and storing the instantaneous state of said chronograph timing signals at a selected time t3, where t1 < or = t3 < or = t2, without interrupting said chronograph divider means; said controlled gate means permitting the selective connection of said digital display means to one of said time keeping divider means and said memory means to provide a digital representation of present time or elapsed time up to said selected time (t3 - t1) in response to said time keeping timing signals or the instantaneous chronograph timing signals stored in said memory means.
Claim 4
Dependent Claim
41 words
An electronic timepiece as recited in claim 2, wherein said controlled gate means further selectively permits the display of elapsed time (t2 - t1) on said digital display means in response to said chronograph timing signals from said chronograph divider means.
Claim 5
Dependent Claim
46 words
An electronic timepiece as recited in claim 1, wherein said pulse generator means includes a quartz crystal oscillator; said time keeping divider means, chronograph divider means, controlled gate means, and means for selectively starting and stopping said chronograph divider means being formed from MOS integrated circuits.
Claim 6
Dependent Claim
19 words
An electronic timepiece as recited in claim 4, wherein said display means is formed from liquid crystal display means.
Claim 7
Dependent Claim
18 words
An electronic timepiece as recited in claim 4, wherein said display means is formed from light emitting elements.
Claim 8
Dependent Claim
146 words
An electronic timepiece as recited in claim 1, including a first divider circuit means for producing an intermediate signal of intermediate frequency from said time standard signal; said time keeping divider means including second divider circuit means including 1/10, 1/6, 1/10, 1/6, and 1/10 binary divider stages for producing said time keeping timing signals from said intermediate frequency signal; said chronograph divider means including third divider circuit means for producing a further intermediate signal of a frequency less than said first-mentioned intermediate signal from said first-mentioned intermediate signal and a fourth divider circuit means including 1/10, 1/10, 1/10, 1/6, 1/10 and 1/6 divider stages for producing said chronograph timing signals in response to said further intermediate signal; said means for stopping and starting said chronograph divider means being operatively connected to said third divider circuit means for the stopping and starting of said chronograph divider means.
Claim 9
Dependent Claim
44 words
An electronic timepiece as recited in claim 1, including decoder means positioned intermediate said contrOlled gate means and said digital display means for converting said time keeping timing signals and said chronograph timing signals into a form suitable for driving said digital display means.
Claim 10
Dependent Claim
27 words
An electronic timepiece as recited in claim 1, wherein the signal produced by said chronograph divider means first stage has a period of 1/100 second or less.
Claim 11
Dependent Claim
27 words
An electronic timepiece as recited in claim 1, wherein the signal produced by said chronograph divider means first stage has a period of 1/1000 second or less.
Claim 12
Dependent Claim
175 words
An electronic timepiece comprising pulse generator means for producing a high frequency time standard signal; time keeping divider means for producing low frequency time keeping timing signals in response to said time standard signal; chronograph divider means for producing low frequency chronograph timing signals in response to said time standard signal; means for selectively stopping and starting said chronograph divider means without affecting the operation of said time keeping divider means; memory means coupled to said chronograph divider means; switch means for selective momentary actuation of said memory means to detect and store the instantaneous chronograph timing signals at the moment of selective actuation without interrupting said chronograph divider means; digital display means; and controlled gate means for the selective coupling of said digital display means to one of said time keeping divider means and said memory means for the selective digital display of present time or elapsed time up to said time of actuation of said memory means, respectively, in response to said time keeping time signals or said instantaneous chronograph timing signals, respectively.
Claim 13
Dependent Claim
175 words
An electronic timepiece comprising pulse generator means for producing a high frequency time standard signal; time keeping divider means for producing low frequency time keeping timing signals in response to said time standard signal; chronograph divider means for producing low frequency chronograph timing signals in response to said time standard signal; means for selectively stopping and starting said chronograph divider means without affecting the operation of said time keeping divider means; memory means coupled to said chronograph divider means; switch means for selective momentary actuation of said memory means to detect and store the instantaneous chronograph timing signals at the moment of selective actuation without interrupting said chronograph divider means; digital display means; and controlled gate means for the selective coupling of said digital display means to one of said time keeping divider means and said memory means for the selective digital display of present time or elapsed time up to said time of actuation of said memory means, respectively, in response to said time keeping time signals or said instantaneous chronograph timing signals, respectively.
Claim 14
Dependent Claim
80 words
An electronic timepiece as recited in claim 12, wherein said chronograph divider means includes a plurality of series-connected divider stages, said control gate means selectively connecting the group of said divider stages of said chronograph divider means producing said chronograph timing signals to said digital display means, said starting and stopping means being coupled to the first stage of said chronograph divider means, said first stage producing a signal of a frequency greater than that of said chronograph timing signals.
Claim 15
Dependent Claim
28 words
An electronic timepiece as recited in claim 11, including resetting means coupled to said chronograph divider means for selectively resetting said chronograph divider means to a zero state.
Claim 16
Dependent Claim
193 words
An electronic timepiece comprising pulse generator means for generating a high frequency time standard signal; time keeping divider means for producing low frequency time keeping timing signals in response to said time standard signal; chronograph divider means for producing low frequency chronograph timing signals in response to said time standard signal, said chronograph divider means including a plurality of series-connected divider stages; means for selectively starting and stopping a first stage of said chronograph divider means producing a signal of a frequency greater than that of said chronograph timing signals independent of said time keeping divider means, resetting means coupled to said chronograph divider means for selectively and simultaneously resetting all of said chronograph divider means stages to a zero state; first digital dispaly means; means coupling said first digital display means to said time keeping divider means for the digital display of time in response to said time keeping timing signals; second digital display means; and means coupling said second digital display means to said chronograph divider means for the digital display of elapsed time between the starting and stopping of said chronograph divider means in response to said chronograph timing signals.
Claim 17
Dependent Claim
193 words
An electronic timepiece comprising pulse generator means for generating a high frequency time standard signal; time keeping divider means for producing low frequency time keeping timing signals in response to said time standard signal; chronograph divider means for producing low frequency chronograph timing signals in response to said time standard signal, said chronograph divider means including a plurality of series-connected divider stages; means for selectively starting and stopping a first stage of said chronograph divider means producing a signal of a frequency greater than that of said chronograph timing signals independent of said time keeping divider means, resetting means coupled to said chronograph divider means for selectively and simultaneously resetting all of said chronograph divider means stages to a zero state; first digital dispaly means; means coupling said first digital display means to said time keeping divider means for the digital display of time in response to said time keeping timing signals; second digital display means; and means coupling said second digital display means to said chronograph divider means for the digital display of elapsed time between the starting and stopping of said chronograph divider means in response to said chronograph timing signals.
Claim 18
Dependent Claim
96 words
An electronic timepiece as recited in claim 15, wherein said means coupling said chronograph divider means and said second digital display means includes memory means adapted to selectively instantaneously detect and store the instantaneous chronograph Timing signals from said chronograph divider means at the instant of actuation thereof without interrupting said chronograph divider means; and means for selectively actuating said memory means, said second digital display means displaying elapsed time between the start of said chronograph divider means and said instant of actuation in response to said stored instantaneous chronograph timing signals from said memory means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |