US5113217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device for use in a camera
Assignee: Minolta Co Ltd
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Filing: 1991-03-01
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Granted: 1992-05-12
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Expires: 2011-03-01
Abstract
Abstract A display device for use in a camera comprises a central processing unit and display units to display exposure data and various control modes under the control of the CPU. The display units are arranged to display the exposure data with suitable marks or characters in rows so as to make the operator to read the display easily. The CPU provides control data to deenergize the display unit at the time of initial states of the camera such as at the time of loading a battery in the camera to prevent to display confusing information.
Inventors
- 👤 Shuji Izumi
- 👤 Masaaki Nakai
- 👤 Manabu Inoue
- 👤 Akihiko Fujino
- 👤 Kunio Kawamura
- 👤 Yuji Takarabe
- 👤 Masatake Niwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:20
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B17/20; G03B2217/00; G03B2217/005
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
81 words
A display device for use in a camera which comprises: first display means for displaying a diaphragm aperture value quantized by 0.5 Ev value; means for detecting mounting of an exchangeable lens having a full open diaphragm aperture value deviant from the value quantized by 0.5 Ev value; and second display means for displaying a nominal diaphragm aperture value when the calculated or set aperture diaphragm value of the exchangeable lens is deviant from the value quantized by 0.5 Ev value.
Claim 2
Dependent Claim
81 words
A display device for use in a camera which comprises: first display means for displaying a diaphragm aperture value quantized by 0.5 Ev value; means for detecting mounting of an exchangeable lens having a full open diaphragm aperture value deviant from the value quantized by 0.5 Ev value; and second display means for displaying a nominal diaphragm aperture value when the calculated or set aperture diaphragm value of the exchangeable lens is deviant from the value quantized by 0.5 Ev value.
Claim 3
Dependent Claim
115 words
A camera comprising: an objective lens, means for determining an aperture value of said objective lens, means for generating data including a full open aperture value of said objective lens, means for comparing the determined aperture value with the full open aperture value, means for displaying the aperture value, operable in a first mode wherein the aperture value is displayed every predetermined step of said aperture value in accordance with the change in determined aperture value and a second mode wherein the full open aperture value is displayed, and means for selecting either the first mode of the second mode of said displaying means in accordance with a result of comparison of said comparing means.
Claim 4
Dependent Claim
115 words
A camera comprising: an objective lens, means for determining an aperture value of said objective lens, means for generating data including a full open aperture value of said objective lens, means for comparing the determined aperture value with the full open aperture value, means for displaying the aperture value, operable in a first mode wherein the aperture value is displayed every predetermined step of said aperture value in accordance with the change in determined aperture value and a second mode wherein the full open aperture value is displayed, and means for selecting either the first mode of the second mode of said displaying means in accordance with a result of comparison of said comparing means.
Claim 5
Dependent Claim
36 words
A camera according to claim 2, wherein said displaying means displays the aperture value on 0.5 EV steps in the first mode, an wherein the full open aperture value is deviant from the 0.5 EV steps.
Claim 6
Dependent Claim
25 words
A camera according to claim 2, wherein said determining means including means for calculating an aperture value as an exposure control value of said camera.
Claim 7
Dependent Claim
26 words
A camera according to claim 2, wherein said determining means including means for manually setting an aperture value as an exposure control value of said camera.
Claim 8
Dependent Claim
43 words
A camera according to claim 2, wherein said selecting means selects the first mode when the determined aperture value does not reach the full open aperture value and selects the second mode when the determined aperture value reaches the full open aperture value.
Claim 9
Dependent Claim
38 words
A camera according to claim 2, wherein said objective lens includes means for varying the focal length of the lens and said generating means generates data, the data changing in dependence on the focal length of said lens.
Claim 10
Dependent Claim
125 words
A camera system comprising: an interchangeable objective lens including, an optical system, means for generating a data including a full open aperture value of said interchangeable objective lens; and a camera body including, means for determining an aperture value of said interchangeable objective lens, means for comparing the determined aperture value with the full open aperture value, means for displaying the aperture value, operable in a first mode wherein the aperture value is displayed every predetermined step in accordance with the change in determined aperture value and a second mode wherein the full open aperture value is displayed, and means for selecting either the first mode or the second mode of said displaying means in accordance with a result of comparsion of said comparing means.
Claim 11
Dependent Claim
125 words
A camera system comprising: an interchangeable objective lens including, an optical system, means for generating a data including a full open aperture value of said interchangeable objective lens; and a camera body including, means for determining an aperture value of said interchangeable objective lens, means for comparing the determined aperture value with the full open aperture value, means for displaying the aperture value, operable in a first mode wherein the aperture value is displayed every predetermined step in accordance with the change in determined aperture value and a second mode wherein the full open aperture value is displayed, and means for selecting either the first mode or the second mode of said displaying means in accordance with a result of comparsion of said comparing means.
Claim 12
Dependent Claim
25 words
A camera system to claim 8, wherein said determining means including means for calculating an aperture value as an exposure control value of said camera.
Claim 13
Dependent Claim
26 words
A camera according to claim 8, wherein said determining means including means for manually setting an aperture value as an exposure control value of said camera.
Claim 14
Dependent Claim
44 words
A camera system according to claim 8, wherein said selecting means selects the first mode when the determined aperture value does not reach the full open aperture value and selects the second mode when the determined aperture value reaches the full open aperture value.
Claim 15
Dependent Claim
121 words
A camera comprising: means for determining a control value to control a prescribed operation of said camera, means for generating a predetermined data including a control value to control the prescribed operation of said camera, means for comparing the determined control value with the control value of the predetermined data, means for displaying the determined control value, operable in a first mode wherein the control value is displayed every predetermined step in accordance with the change in determined control value, or a second mode wherein the control value of the predetermined data is displayed, and means for selecting either the first mode or the second mode of said displaying means in accordance with a result of comparison of said comparing means.
Claim 16
Dependent Claim
121 words
A camera comprising: means for determining a control value to control a prescribed operation of said camera, means for generating a predetermined data including a control value to control the prescribed operation of said camera, means for comparing the determined control value with the control value of the predetermined data, means for displaying the determined control value, operable in a first mode wherein the control value is displayed every predetermined step in accordance with the change in determined control value, or a second mode wherein the control value of the predetermined data is displayed, and means for selecting either the first mode or the second mode of said displaying means in accordance with a result of comparison of said comparing means.
Claim 17
Dependent Claim
25 words
A camera according to claim 12, wherein said determining means including means for calculating an aperture value as an exposure control value of said camera.
Claim 18
Dependent Claim
26 words
A camera according to claim 12, wherein said determining means including means for manually setting an aperture value as an exposure control value of said camera.
Claim 19
Dependent Claim
47 words
A camera according to claim 12, wherein said selecting means selects the first mode when the determined control value does not reach the control value of the predetermined data and selected the second mode when the determined control value reaches the control value of the predetermined data.
Claim 20
Dependent Claim
28 words
A camera according to claim 12, wherein the predetermed data is a data indicating a limit of the controllable range relating to the prescribed operation of said camera.
Claim 21
Dependent Claim
68 words
A camera comprising: an objective lens, means for selecting an aperture value of said objective lens, menas for displaying one of a plurality of aperture values, the plurality of aperture values including a first type of aperture values on 0.5 EV steps and a second type of aperture values deviant from the 0.5 EV steps, and means for controlling said displaying means in accordance with said selecting means.
Claim 22
Dependent Claim
68 words
A camera comprising: an objective lens, means for selecting an aperture value of said objective lens, menas for displaying one of a plurality of aperture values, the plurality of aperture values including a first type of aperture values on 0.5 EV steps and a second type of aperture values deviant from the 0.5 EV steps, and means for controlling said displaying means in accordance with said selecting means.
Claim 23
Dependent Claim
26 words
A camera according to claim 17, wherein each of the second type of aperture values is between a neighboring pair of values in the first type.
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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) | 1995-05-12 | 1995-11-11 | 1996-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-12 | 1999-11-11 | 2000-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-12 | 2003-11-11 | 2004-05-12 | $7700.00 | Window Closed / Lapsed |