Patent US4982220A successfully refreshed from Google Patents.
US4982220A
Expired / Lapsed
US
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Camera with computer control
Assignee: Konica Minolta Inc
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Filing: 1988-11-09
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Granted: 1991-01-01
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Expires: 2008-11-09
Abstract
Abstract In an electrical automatic camera capable of performing normal mode in which picture-taking operation is carried out one time for only one frame of photographic film and interval mode in which picture-taking operation is repeated for a given numbers of frames with a given interval, the invention provides battery-check circuit having at least two kinds of reference levels for comparing with current voltage level of battery, whereby the first reference level is used in the time of the normal mode and the second reference level is used in the time of the interval mode, and wherein the second reference level is set to be higher than the first reference level.
Inventors
- 👤 Michiharu Akasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:08
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/26; G03B17/00; G03B17/18; G03B17/38; G03B17/40; G03B7/08; G03B7/091
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
An electrical automatic camera capable of performing at least two modes of which the first mode is normal mode in which picture-taking operation is carried out one time for only one frame of photographic film and the second mode is interval mode in which picture-taking operation is repeated for a given numbers of frames with a given interval; said camera comprising selection means for selecting one mode among at least said two modes, and battery-check circuit having at least two kinds of reference levels for comparing with current voltage level of battery, wherein the second reference level is used in the time of said second mode and the first reference level is used in the time of another mode including said first mode, and wherein the second reference level is set to be higher than the first reference level.
Claim 2
Dependent Claim
139 words
An electrical automatic camera capable of performing at least two modes of which the first mode is normal mode in which picture-taking operation is carried out one time for only one frame of photographic film and the second mode is interval mode in which picture-taking operation is repeated for a given numbers of frames with a given interval; said camera comprising selection means for selecting one mode among at least said two modes, and battery-check circuit having at least two kinds of reference levels for comparing with current voltage level of battery, wherein the second reference level is used in the time of said second mode and the first reference level is used in the time of another mode including said first mode, and wherein the second reference level is set to be higher than the first reference level.
Claim 3
Dependent Claim
20 words
The camera of claim 1, wherein the current voltage level is measured while applying a predetermined load on the battery.
Claim 4
Dependent Claim
32 words
The camera of claim 1, wherein the current voltage is converted into digital data, and wherein the first reference level and the second reference level are preset in memory as digital data.
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) | 1993-12-31 | 1994-07-02 | 1995-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-31 | 1998-07-02 | 1999-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-31 | 2002-07-02 | 2003-01-01 | $7700.00 | Window Closed / Lapsed |