Patent US4462671A successfully refreshed from Google Patents.
US4462671A
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Camera warning shake system
Assignee: Konica Minolta Inc
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Filing: 1981-12-21
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Granted: 1984-07-31
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Expires: 2001-12-21
Abstract
Abstract A camera has a taking lens and a charge-coupled device that detects light through the lens. A warning signal generating circuit includes a capacitor, comparator and an LED or buzzer actuated by the output from the comparator. The reference voltage associated with the capacitor is variable to provide warning time limits commensurate with taking lenses of different focal length.
Inventors
- 👤 Kiziro Suzuki
- 👤 Yoshiharu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:51
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B2217/00; G03B2217/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
In a camera having a taking lens and a charge-coupled device for achieving focus detection, a system for warning the operator of the camera of camera shakiness caused by shaking of the operator's hand holding the camera, comprising: means for warning when the amount of electric charge stored in the charge-coupled device during a predetermined period of time fails to reach a predetermined amount of electric charge.
Claim 2
Dependent Claim
67 words
In a camera having a taking lens and a charge-coupled device for achieving focus detection, a system for warning the operator of the camera of camera shakiness caused by shaking of the operator's hand holding the camera, comprising: means for warning when the amount of electric charge stored in the charge-coupled device during a predetermined period of time fails to reach a predetermined amount of electric charge.
Claim 3
Dependent Claim
31 words
A camera shake warning system as set forth in claim 1, also including means for varying said predetermined period of time in accordance with a focal length of the taking lens.
Claim 4
Dependent Claim
35 words
A camera shake warning system as set forth in claim 1 or 2 wherein said predetermined amount of electric charge in the amount at which the charge-coupled device starts transfer of the stored electric charge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |