Patent US5081483A successfully refreshed from Google Patents.
US5081483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera control system
Assignee: Minolta Co Ltd
•
Filing: 1990-12-07
•
Granted: 1992-01-14
•
Expires: 2010-12-07
Abstract
Abstract A camera control system is provided having a plurality of microcomputers, each microcomputer operating in conjunction with a respective clock which generates clock pulses at a respective frequency. A first microcomputer controls a second microcomputer after the second microcomputer has stabilized after initial start up. The first microcomputer controls the overall camera operation, and the second microcomputer controls the camera display operation. When a battery is loaded into the camera, both microcomputers are reset.
Inventors
- 👤 Toshihiko Ishimura
- 👤 Yasuaki Akada
- 👤 Reiji Seki
- 👤 Nobuyuki Taniguchi
- 👤 Norio Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A camera having a plurality of microcomputers, comprising: first microcomputer means, operating in synchronism with the first clock that generates first clock pulses at a first frequency, for controlling an operation of said camera, second microcomputer means, operating in synchronism with a second clock that generates second clock pulses at a second frequency which is lower than the first frequency, for controlling an operation of said camera, said first microcomputer means having a function relating to cooperation with said second microcomputer means, means for starting said first clock and said second clock at the same time, and delay means, responsive to said starting means, for causing said first microcomputer means to delay said function relating to cooperation with said second microcomputer means until said second microcomputer has stabilized.
Claim 2
Dependent Claim
128 words
A camera having a plurality of microcomputers, comprising: first microcomputer means, operating in synchronism with the first clock that generates first clock pulses at a first frequency, for controlling an operation of said camera, second microcomputer means, operating in synchronism with a second clock that generates second clock pulses at a second frequency which is lower than the first frequency, for controlling an operation of said camera, said first microcomputer means having a function relating to cooperation with said second microcomputer means, means for starting said first clock and said second clock at the same time, and delay means, responsive to said starting means, for causing said first microcomputer means to delay said function relating to cooperation with said second microcomputer means until said second microcomputer has stabilized.
Claim 3
Dependent Claim
24 words
A camera according to claim 1, further comprising: means for displaying information relating to camera operation, wherein said second microcomputer controls said displaying means.
Claim 4
Dependent Claim
55 words
A camera according to claim 1, wherein said delay means causes said first microcomputer means to delay said function relating to cooperating with control said second microcomputer means until a predetermined time elapses, said predetermined time being sufficient for said second microcomputer means to stabilize after said second clock is started by said starting means.
Claim 5
Dependent Claim
21 words
A camera according to claim 1, wherein said starting means is responsive to a loading of a battery into the camera.
Claim 6
Dependent Claim
29 words
A camera according to claim 4, further comprising: means responsive to said battery loading for resetting said first microcomputer means and said second microcomputer means to a predetermined state.
References Cited (Backward Citations)
US4149795A
Cited
US4483601A
Cited
US4647176A
Cited
US4678306A
Cited
US4692008A
Cited
US4855781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |