US4679925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
•
Filing: 1986-02-06
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Granted: 1987-07-14
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Expires: 2006-02-06
Abstract
Abstract A camera having different sequences of operations between single-frame and continous shootings. In the single frame shooting, after both charging and film winding operations have terminated, the next sequence is readied to start, while at the continuous shooting, the termination of the charging operation is made coincide with the initiation of the next sequence and it goes on until just before the shutter is opened, as the winding operation in the preceding sequence is not completed yet.
Inventors
- 👤 Masaharu Kawamura
- 👤 Yoshihito Harada
- 👤 Ryuichi Kobayashi
- 👤 Masayuki Suzuki
- 👤 Tsunemasa Ohara
- 👤 Yoichi Tosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:36
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
194 words
A camera capable of both single frame and continuous shootings, comprising: (a) first detecting means for detecting the state of said single frame shooting and the state of said continuous shooting; (b) charging means for performing a charging operation; (c) second detecting means for detecting the termination of the charging operation by said charging means; (d) film transporting means for transporting film to make a next exposure; (e) third detecting means for detecting the completion of a one-frame advancing operation of said film transporting means; and (f) control means for controlling the sequence of release operation of said camera, said control means, when said single-frame shooting state is detected by said first detecting means, enabling the release operation for a next exposure after the completion of the charging operation has been detected by said second detecting means and the completion of the film transporting operation has been detected by said third detecting means, and when said continuous shooting state is detected by said first detecting means, initiating part of the release operation prior to the shutter opening at a time when the completion of the charging operation is detected by said second detecting means.
Claim 2
Dependent Claim
194 words
A camera capable of both single frame and continuous shootings, comprising: (a) first detecting means for detecting the state of said single frame shooting and the state of said continuous shooting; (b) charging means for performing a charging operation; (c) second detecting means for detecting the termination of the charging operation by said charging means; (d) film transporting means for transporting film to make a next exposure; (e) third detecting means for detecting the completion of a one-frame advancing operation of said film transporting means; and (f) control means for controlling the sequence of release operation of said camera, said control means, when said single-frame shooting state is detected by said first detecting means, enabling the release operation for a next exposure after the completion of the charging operation has been detected by said second detecting means and the completion of the film transporting operation has been detected by said third detecting means, and when said continuous shooting state is detected by said first detecting means, initiating part of the release operation prior to the shutter opening at a time when the completion of the charging operation is detected by said second detecting means.
Claim 3
Dependent Claim
44 words
A camera according to claim 1, wherein said first detecting means discriminates between the single frame shooting mode setting and the continuous shooting mode setting depending on whether or not a shutter operation switch is in operation after the completion of the release operation.
Claim 4
Dependent Claim
23 words
A camera according to claim 1, wherein the charging operation performed by said charging means carries out charging of a mirror drive mechanism.
Claim 5
Dependent Claim
27 words
A camera according to claim 1, wherein the charging operation performed by said charging means carries out charging of a diaphragm drive mechanism of a photographic lens.
Claim 6
Dependent Claim
27 words
A camera according to claim 1, wherein said film transporting means has a motor as a drive source and transports film in cooperation with a transmission system.
Claim 7
Dependent Claim
37 words
A camera according to claim 1, wherein said third detecting means detects the completion of the film transporting operation by the amount of rotation of a rotation detecting wheel arranged to move when the film is transported.
Claim 8
Dependent Claim
35 words
A camera according to claim 1, wherein the part of the release operation controlled by said control means which are carried out before the shutter is opened includes an operation of driving up a mirror.
Claim 9
Dependent Claim
46 words
A camera according to claim 1, wherein the part of the release operation controlled by said control means which are carried out before the shutter is opened includes an operation of closing a diaphragm of a photographic lens from the fully open position to a presetting.
Claim 10
Dependent Claim
142 words
A camera capable of continuous shooting, comprising: (a) charging means for performing a charging operation; (b) first detecting means for detecting the completion of the charging operation by said charging means; (c) film transporting means for transporting film to make a next exposure; (d) second detecting means for detecting the completion of a one-frame transporting operation of said film transporting means; and (e) control means for controlling the sequence of release operation of said camera, whereby when the completion of the charging operation is detected by said first detecting means, said control means initializes at this point in time a part of the release operation which is carried out before an opening operation of a shutter, and when the completion of the film transporting operation is detected by said second detecting means, said control means initializes the opening operation of the shutter.
Claim 11
Dependent Claim
142 words
A camera capable of continuous shooting, comprising: (a) charging means for performing a charging operation; (b) first detecting means for detecting the completion of the charging operation by said charging means; (c) film transporting means for transporting film to make a next exposure; (d) second detecting means for detecting the completion of a one-frame transporting operation of said film transporting means; and (e) control means for controlling the sequence of release operation of said camera, whereby when the completion of the charging operation is detected by said first detecting means, said control means initializes at this point in time a part of the release operation which is carried out before an opening operation of a shutter, and when the completion of the film transporting operation is detected by said second detecting means, said control means initializes the opening operation of the shutter.
Claim 12
Dependent Claim
79 words
A camera according to claim 1, further comprising: (a) fourth detecting means for detecting the end of film; (b) charge control means for forcibly operating said charging means; and (c) means, responsive to initialization of the part of the release operation which is carried out before an opening operation of a shutter by said control means at a point in time when the film end is detected by said fourth detecting means, for operating said charge control means again.
Claim 13
Dependent Claim
80 words
A camera according to claim 9, further comprising: (a) third detecting means for detecting the end of film; (b) charge control means for forcibly operating said charging means; and (c) means, responsive to initialization of the part of the release operation which is carried out before an opening operation of a shutter by said control means at a point in time when the end of film is detected by said third detecting means, for operating said charge control means again.
Claim 14
Dependent Claim
26 words
A camera according to claim 1, wherein said charging means and said film transporting means are driven by respective motor drive sources independent of each other.
Claim 15
Dependent Claim
26 words
A camera according to claim 9, wherein said charging means and said film transporting means are driven by respective motor drive sources independent of each other.
Claim 16
Dependent Claim
23 words
A camera according to claim 1, wherein the charging operation performed by said charging means carries out charging of a shutter drive mechanism.
References Cited (Backward Citations)
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US4279490A
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US4435058A
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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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |