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US3971205A
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US
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All electronic-type timepiece
Assignee: Citizen Watch Co Ltd
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Filing: 1974-09-05
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Granted: 1976-07-27
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Expires: 1994-09-05
Abstract
Abstract An all electronic type timepiece is disclosed which comprises a customary or usual display for displaying time, a calendar, a.m., p.m., colon and other functions. An additional display element is provided separately from the customary display or alternatively is constructed as a part thereof for displaying the operating condition of a time counter circuit even when the customary display is extinguished.
Inventors
- 👤 Yasushi Nomura
- 👤 Shigeru Morokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:03
CPC Classifications
G; G04; G04C; G04C10/00; G04C10/04; G04G; G04G11/00; G04G9/00; G04G9/08; G04G9/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A time measuring device which is completely electronic comprising a reference signal generating source for producing pulses, a time counter cicuit for counting said pulses, a decoder driving circuit for decoding the output of said time counter circuit, a control operating member for initiating operation of said counter circuit, a first electro-optical display part connected to said decoder for displaying measured time, a switch controllable from said time counter circuit and independent of the operating condition of said first electro-optical display, a second electro-optical display for displaying the operating condition of said time counter circuit, and an additional electro-optical display circuit including a display driving circuit for driving said electro-optical display, wherein when measuring time, operation of said switch causes at least a part of said first electro-optical display to extinguish and simultaneously causes said additional electro-optical display circuit to operate so that said second electro-optical display is driven and thereby indicates the operating condition of said time counter circuit.
Claim 2
Dependent Claim
160 words
A time measuring device which is completely electronic comprising a reference signal generating source for producing pulses, a time counter cicuit for counting said pulses, a decoder driving circuit for decoding the output of said time counter circuit, a control operating member for initiating operation of said counter circuit, a first electro-optical display part connected to said decoder for displaying measured time, a switch controllable from said time counter circuit and independent of the operating condition of said first electro-optical display, a second electro-optical display for displaying the operating condition of said time counter circuit, and an additional electro-optical display circuit including a display driving circuit for driving said electro-optical display, wherein when measuring time, operation of said switch causes at least a part of said first electro-optical display to extinguish and simultaneously causes said additional electro-optical display circuit to operate so that said second electro-optical display is driven and thereby indicates the operating condition of said time counter circuit.
Claim 3
Dependent Claim
26 words
The time measuring device of claim 1 wherein said second electro-optical display is an exclusive symbol display element in the form of a pattern or character.
Claim 4
Dependent Claim
21 words
The time measuring device of claim 1 wherein said second electro-optical display displays the operating condition of said time counter circuit.
Claim 5
Dependent Claim
17 words
The time measuring device of claim 1 wherein said switch is controlled by said control operating member.
Claim 6
Dependent Claim
19 words
The time measuring device of claim 1, wherein the second electro-optical is a portion of said first electronic display.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |