US3886724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display watch
Assignee: DIANI SEIKOSHA KK
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Filing: 1974-02-19
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Granted: 1975-06-03
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Expires: 1994-02-19
Abstract
Abstract A liquid crystal display watch having an electronic digital circuit having a battery driving the circuit and an astable blocking oscillator driven by the battery. The output from the oscillator is rectified and utilized for driving a liquid crystal display panel and driver circuits thereof.
Inventors
- 👤 Masaaki Kamiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3381; G; G04; G04G; G04G19/00; G04G19/02; G04G9/00; G04G9/0023; G04G9/0029; G04G9/0047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
An electronic timepiece circuit comprising, an oscillator having a given frequency output, a frequency divider dividing the output of said oscillator, a divide-by-60 counter which counts modulo 60 counting output pulses of said frequency divider corresponding to minutes, a divide-by-12 counter which counts modulo 12 in series with the first-mentioned counter counting pulses corresponding to hours, a first driver connected to receive the output of the second-mentioned counter, a second driver connected to receive the output of the first-mentioned counter, a display panel displaying the output of said first driver as a digital output representation of time in hours, and displaying the output of the second driver as a digital output representation of time in minutes, a battery energizing said oscillator and said frequency divider, and a voltage booster comprising an astable blocking oscillator connected to said battery for boosting the output of said battery and applying it to both of said counters and both of said drivers.
Claim 2
Dependent Claim
158 words
An electronic timepiece circuit comprising, an oscillator having a given frequency output, a frequency divider dividing the output of said oscillator, a divide-by-60 counter which counts modulo 60 counting output pulses of said frequency divider corresponding to minutes, a divide-by-12 counter which counts modulo 12 in series with the first-mentioned counter counting pulses corresponding to hours, a first driver connected to receive the output of the second-mentioned counter, a second driver connected to receive the output of the first-mentioned counter, a display panel displaying the output of said first driver as a digital output representation of time in hours, and displaying the output of the second driver as a digital output representation of time in minutes, a battery energizing said oscillator and said frequency divider, and a voltage booster comprising an astable blocking oscillator connected to said battery for boosting the output of said battery and applying it to both of said counters and both of said drivers.
Claim 3
Dependent Claim
158 words
An electronic timepiece circuit comprising, an oscillator having a given frequency output, a frequency divider dividing the output of said oscillator, a divide-by-60 counter which counts modulo 60 counting output pulses of said frequency divider corresponding to minutes, a divide-by-12 counter which counts modulo 12 in series with the first-mentioned counter counting pulses corresponding to hours, a first driver connected to receive the output of the second-mentioned counter, a second driver connected to receive the output of the first-mentioned counter, a display panel displaying the output of said first driver as a digital output representation of time in hours, and displaying the output of the second driver as a digital output representation of time in minutes, a battery energizing said oscillator and said frequency divider, and a voltage booster comprising an astable blocking oscillator connected to said battery for boosting the output of said battery and applying it to both of said counters and both of said drivers.
Claim 4
Dependent Claim
158 words
An electronic timepiece circuit comprising, an oscillator having a given frequency output, a frequency divider dividing the output of said oscillator, a divide-by-60 counter which counts modulo 60 counting output pulses of said frequency divider corresponding to minutes, a divide-by-12 counter which counts modulo 12 in series with the first-mentioned counter counting pulses corresponding to hours, a first driver connected to receive the output of the second-mentioned counter, a second driver connected to receive the output of the first-mentioned counter, a display panel displaying the output of said first driver as a digital output representation of time in hours, and displaying the output of the second driver as a digital output representation of time in minutes, a battery energizing said oscillator and said frequency divider, and a voltage booster comprising an astable blocking oscillator connected to said battery for boosting the output of said battery and applying it to both of said counters and both of said drivers.
Claim 5
Dependent Claim
22 words
An electronic timepiece circuit according to claim 1, in which said astable blocking oscillator comprises a rectifier element rectifying the output thereof.
Claim 6
Dependent Claim
87 words
An electronic timepiece circuit according to claim 2, in which said astable blocking oscillator comprises said battery, three coils in parallel across said battery, and RC current in series with one of said coils, a transistor in series with said RC circuit across said battery, means connecting said one coil to the base of said transistor, a second of said coils connected to the collector of said transistor, means connecting the emitter of said transistor to a negative side of said battery and to the third coil.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |