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US4692008A Expired / Lapsed US ⏱️ 0.0 years remaining

Display device for camera

Assignee: Canon Inc
•
Filing: 1986-01-29
•
Granted: 1987-09-08
•
Expires: 2006-01-29
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Abstract

Abstract A display device for a camera in which a first display, showing a film feeding state, is presented by time-serially driving a plurality of patterns arranged in a row, and a second display, showing photographic information, is presented by selectively driving a particular one of the patterns. Circuitry is provided for inhibiting the second display during a period in which film feeding is in progress, thereby enabling the use of the same patterns for the two displays.

Inventors

  • 👤 Kazuhiko Arakawa
  • 👤 Go Tokura
  • 👤 Kazuo Fujibayashi
  • 👤 Masayoshi Kiuchi
  • 👤 Yoshihito Harada

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 18:13
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 157 words
A display device for a camera comprising: (a) a plurality of patterns adjacently disposed to each other; (b) a drive circuit for detecting a film feeding operation by a film feeding mechanism and for having said plurality of patterns change their forms of display time-serially, one after another, during film feeding, said circuit having a first display mode for fixing a particular display pattern upon completion of the film feeding operation, and a second display mode for selecting and displaying one of said patterns corresponding to a set information in response to an operation of an exposure information setting operation member; and (c) a control circuit for prohibiting a response by the drive circuit to the operation of said operation member when the film feeding operation is being performed by said film feeding mechanism, and allowing a shift to said second display mode by an operation of said operation member upon completion of the film feeding operation.
Claim 2
Dependent Claim 157 words
A display device for a camera comprising: (a) a plurality of patterns adjacently disposed to each other; (b) a drive circuit for detecting a film feeding operation by a film feeding mechanism and for having said plurality of patterns change their forms of display time-serially, one after another, during film feeding, said circuit having a first display mode for fixing a particular display pattern upon completion of the film feeding operation, and a second display mode for selecting and displaying one of said patterns corresponding to a set information in response to an operation of an exposure information setting operation member; and (c) a control circuit for prohibiting a response by the drive circuit to the operation of said operation member when the film feeding operation is being performed by said film feeding mechanism, and allowing a shift to said second display mode by an operation of said operation member upon completion of the film feeding operation.
Claim 3
Dependent Claim 54 words
A display device according to claim 1, wherein said information setting operation member has first and second members, and the display is placed in the second mode by operating said first member, then the setting of information is done by operating said second member under the state that the first member is in operation.
Claim 4
Dependent Claim 266 words
A display device for a camera comprising: (a) a plurality of patterns disposed in a row; and (b) a display control circuit for having a display of said plurality of patterns time-serially changed during a film feeding operation by a film feeding mechanism in response to the film feeding operation by said mechanism, said circuit having a first display mode to place the plurality of patterns simultaneously in a display state upon completion of the film feeding operation, and shifting from the first display mode to a second display mode in response to an operation of an information setting operation member after a completion of the film feeding operation, then selectively placing, in said second display mode, only one particular pattern suited to the set information, in a display state out of the plurality of patterns which have been placed in a display state simultaneously by the completion of the film feeding operation during such period of time that said operation member is in an operating state, and after having been shifted to the second display mode, further shifting to a third display mode by a release of the operation of said operation member, then in said third display mode, placing the patterns other than said one particular pattern which was placed in a display state in said second display mode, in a same simultaneous display state as that in the time of the completion of the film feeding operation, out of said plurality of patterns which have been placed simultaneously in a display state upon completion of the film feeding in the first display mode.
Claim 5
Dependent Claim 266 words
A display device for a camera comprising: (a) a plurality of patterns disposed in a row; and (b) a display control circuit for having a display of said plurality of patterns time-serially changed during a film feeding operation by a film feeding mechanism in response to the film feeding operation by said mechanism, said circuit having a first display mode to place the plurality of patterns simultaneously in a display state upon completion of the film feeding operation, and shifting from the first display mode to a second display mode in response to an operation of an information setting operation member after a completion of the film feeding operation, then selectively placing, in said second display mode, only one particular pattern suited to the set information, in a display state out of the plurality of patterns which have been placed in a display state simultaneously by the completion of the film feeding operation during such period of time that said operation member is in an operating state, and after having been shifted to the second display mode, further shifting to a third display mode by a release of the operation of said operation member, then in said third display mode, placing the patterns other than said one particular pattern which was placed in a display state in said second display mode, in a same simultaneous display state as that in the time of the completion of the film feeding operation, out of said plurality of patterns which have been placed simultaneously in a display state upon completion of the film feeding in the first display mode.
Claim 6
Dependent Claim 32 words
A display device according to claim 3, wherein said display state of the pattern is a lighted display pattern and the particular pattern in the third mode is a blinking display pattern.
Claim 7
Dependent Claim 21 words
A display device according to claim 3, wherein said information setting operation member is an exposure correction information setting operation member.
Claim 8
Dependent Claim 54 words
A display device according to claim 3, wherein said information setting operation member has first and second members, and the display is placed in the second mode by operating said first member, then the setting of information is done by operating said second member under the state that the first member is in operation.

References Cited (Backward Citations)

US4313657A Cited
US4432628A Cited
US4589755A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-09-07 1991-03-09 1991-09-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-09-07 1995-03-09 1995-09-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-09-07 1999-03-09 1999-09-08 $7700.00 Window Closed / Lapsed

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