US5218399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display system for camera having segment display portion and dot matrix display portion
Assignee: Minolta Co Ltd
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Filing: 1991-10-30
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Granted: 1993-06-08
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Expires: 2011-10-30
Abstract
Abstract A display system for a camera that includes both a segment display portion and a dot matrix display portion. The two different display systems are driven by different duty ratios for assuring clearer presentation and quicker recognition by the photographer. The disclosure also includes an energy-saving control system for such a combination display system where the more energy-consuming dot matrix portion is stopped operating while the less energy-consuming segment portion remains operation after a predetermined time since the last operation of any switch of the camera. The disclosure further includes an elaborate analog display that clearly shows exposure parameters of the camera.
Inventors
- 👤 Shuji Izumi
- 👤 Toshihiko Ishimura
- 👤 Tatsuya Ishida
- 👤 Noriyuki Ishii
- 👤 Hiroshi Yoshino
- 👤 Katsuyuki Nanba
- 👤 Hirokazu Kuroda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:11
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
138 words
A camera comprising: means for changing the state of said camera among a first state in which said camera is in an OFF state, a second state in which said camera is in an ON state without substantial power consumption to hold said camera in operation, and a third state in which said camera is in an ON state consuming power to hold said camera in operation; means for displaying photographic information of said camera, said displaying means including first display means for displaying the information by means of a plurality of display segments and second display means for displaying the information by means of a dot matrix; and means responsive to said changing means for controlling said displaying means so as to only turn on the first display means when the camera is in the second state.
Claim 2
Dependent Claim
138 words
A camera comprising: means for changing the state of said camera among a first state in which said camera is in an OFF state, a second state in which said camera is in an ON state without substantial power consumption to hold said camera in operation, and a third state in which said camera is in an ON state consuming power to hold said camera in operation; means for displaying photographic information of said camera, said displaying means including first display means for displaying the information by means of a plurality of display segments and second display means for displaying the information by means of a dot matrix; and means responsive to said changing means for controlling said displaying means so as to only turn on the first display means when the camera is in the second state.
Claim 3
Dependent Claim
15 words
A camera according to claim 1, wherein said changing means is a manually operable member.
Claim 4
Dependent Claim
35 words
A camera according to claim 1, wherein said controlling means controls said displaying means so as to turn on both of the first and second display means when said camera is in the third state.
Claim 5
Dependent Claim
52 words
A camera according to claim 1, wherein said controlling means includes means for counting a predetermined time period since said camera is changed into the second state by said changing means and said controlling means controls said displaying means so as to turn off the second display means after the predetermined period.
Claim 6
Dependent Claim
138 words
A camera comprising: means for changing the state of said camera among a first state in which said camera is in an OFF state, a second state in which said camera is in an ON state without substantial power consumption to hold said camera in operation, and a third state in which said camera is in an ON state consuming power to hold said camera in operation; means for displaying photographic information of said camera, said displaying means including first display means for displaying the information by means of a plurality of display segments and second display means for displaying the information by means of a dot matrix; and means responsive to said changing means for controlling said displaying means so as to only turn on the first display means when the camera is in the first state.
Claim 7
Dependent Claim
138 words
A camera comprising: means for changing the state of said camera among a first state in which said camera is in an OFF state, a second state in which said camera is in an ON state without substantial power consumption to hold said camera in operation, and a third state in which said camera is in an ON state consuming power to hold said camera in operation; means for displaying photographic information of said camera, said displaying means including first display means for displaying the information by means of a plurality of display segments and second display means for displaying the information by means of a dot matrix; and means responsive to said changing means for controlling said displaying means so as to only turn on the first display means when the camera is in the first state.
Claim 8
Dependent Claim
15 words
A camera according to claim 5, wherein said changing means is a manually operable member.
Claim 9
Dependent Claim
52 words
A camera according to claim 8, wherein said controlling means includes means for counting a predetermined time period since said camera is changed into the first state by said changing means and said controlling means controls said displaying means so as to turn off the second display means after the predetermined period.
Claim 10
Dependent Claim
160 words
A camera comprising: means for changing the state of said camera among a first state in which said camera is in an OFF state, a second state in which said camera is in an ON state without substantial power consumption to hold said camera in operation, and a third state in which said camera is in an ON state consuming power to hold said camera in operation; means for displaying photographic information of said camera, said displaying means including first display means and second display means different from the first display means; means for driving said displaying means wherein said driving means drives the first display means by using a first method of driving and drives the second display means by using a second method of driving different from the first method; and means for controlling said displaying means so as to turn on at least one of the first and second display means in response to said changing means.
Claim 11
Dependent Claim
160 words
A camera comprising: means for changing the state of said camera among a first state in which said camera is in an OFF state, a second state in which said camera is in an ON state without substantial power consumption to hold said camera in operation, and a third state in which said camera is in an ON state consuming power to hold said camera in operation; means for displaying photographic information of said camera, said displaying means including first display means and second display means different from the first display means; means for driving said displaying means wherein said driving means drives the first display means by using a first method of driving and drives the second display means by using a second method of driving different from the first method; and means for controlling said displaying means so as to turn on at least one of the first and second display means in response to said changing means.
Claim 12
Dependent Claim
45 words
A camera according to claim 8, wherein said driving means drives the first display means with a first duty ratio under the first method and drives the second display means with a second duty ratio under the second method different from the first duty ratio.
Claim 13
Dependent Claim
15 words
A camera according to claim 8, wherein said changing means is a manually operable member.
Claim 14
Dependent Claim
34 words
A camera according to claim 8, wherein said controlling means controls said displaying means so as to turn on only one of the two display means when said camera is in the second state.
Claim 15
Dependent Claim
34 words
A camera according to claim 8, wherein said controlling means controls said displaying means so as to turn on only one of the two display means when said camera is in the first state.
Claim 16
Dependent Claim
35 words
A camera according to claim 8, wherein said controlling means controls said displaying means so as to turn on both of the first and second display means when said camera is in the third state.
Claim 17
Dependent Claim
53 words
A camera according to claim 8, wherein said controlling means includes means for counting a predetermined time period since the state of said camera is changed by said changing means and said controlling means controls said displaying means so as to turn off one of the two display means after the predetermined period.
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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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |