US4432628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film transportation display device
Assignee: Canon Inc
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Filing: 1982-08-23
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Granted: 1984-02-21
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Expires: 2002-08-23
Abstract
Abstract When the film is being transported, a signal forming circuit produces a pulse signal. Based on this pulse signal, a prescribed plurality of signals are formed and applied to a decoder driver so that a plurality of displaying areas positioned side by side in a display are actuated successively in one direction. As the displayed pattern appears to flow, the camera operator is able to recognize that film transportation is in progress.
Inventors
- 👤 Nobuaki Sakurada
- 👤 Masayoshi Kiuchi
- 👤 Masahiro Thunoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A film transportation display device including: (a) pulse forming means for producing a pulse signal when a film is being transported; (b) a 1st circuit means for producing a plurality of pulse signals in a prescribed relationship based on the pulse signal from said pulse forming means; (c) display means for displaying film transporting conditions, said means having a plurality of display elements; and (d) a 2nd circuit means for actuating the plurality of display elements in said display means to present a display pattern as if it were flowing in one direction based on the plurality of pulse signals from said 1st circuit means.
Claim 2
Dependent Claim
105 words
A film transportation display device including: (a) pulse forming means for producing a pulse signal when a film is being transported; (b) a 1st circuit means for producing a plurality of pulse signals in a prescribed relationship based on the pulse signal from said pulse forming means; (c) display means for displaying film transporting conditions, said means having a plurality of display elements; and (d) a 2nd circuit means for actuating the plurality of display elements in said display means to present a display pattern as if it were flowing in one direction based on the plurality of pulse signals from said 1st circuit means.
Claim 3
Dependent Claim
30 words
A device according to claim 1, wherein said pulse forming means produces the pulse signal by a switch arranged to open and close in response to transportation of the film.
Claim 4
Dependent Claim
14 words
A device according to claim 1, wherein said 1st circuit means is a counter.
Claim 5
Dependent Claim
18 words
A device according to claim 1, wherein said 2nd circuit means is a decoder and a drive circuit.
Claim 6
Dependent Claim
195 words
A film transportation display device including: (a) pulse forming means for producing a pulse signal when a film is being transported; (b) changeover means for changing over the film transportation from one of the winding and rewinding modes to the other, said means producing a 1st signal when switched to the winding mode, and a 2nd signal when to the rewinding mode; (c) 1st circuit means to which are applied the pulse signal from said pulse forming means and the 1st signal or the 2nd signal from said changeover means, said means producing a 1st combination of a plurality of pulse signals when the 1st signal is applied, and a 2nd combination of a plurality of pulse signals when the 2nd signal is applied; (d) display means for displaying the film transporting conditions, said means having a plurality of display elements; and (e) 2nd circuit means for actuating the plurality of display elements so as to flow the display pattern in one direction based on said 1st combination of the plurality of pulse signals, and to flow the display pattern in the reversed direction based on the 2nd combination of the plurality of pulse signals.
Claim 7
Dependent Claim
195 words
A film transportation display device including: (a) pulse forming means for producing a pulse signal when a film is being transported; (b) changeover means for changing over the film transportation from one of the winding and rewinding modes to the other, said means producing a 1st signal when switched to the winding mode, and a 2nd signal when to the rewinding mode; (c) 1st circuit means to which are applied the pulse signal from said pulse forming means and the 1st signal or the 2nd signal from said changeover means, said means producing a 1st combination of a plurality of pulse signals when the 1st signal is applied, and a 2nd combination of a plurality of pulse signals when the 2nd signal is applied; (d) display means for displaying the film transporting conditions, said means having a plurality of display elements; and (e) 2nd circuit means for actuating the plurality of display elements so as to flow the display pattern in one direction based on said 1st combination of the plurality of pulse signals, and to flow the display pattern in the reversed direction based on the 2nd combination of the plurality of pulse signals.
Claim 8
Dependent Claim
21 words
A device according to claim 1, wherein the plurality of display elements in said display means are positioned side by side.
Claim 9
Dependent Claim
31 words
A device according to claim 6, wherein the direction of flow of the display pattern in the plurality of display elements is the same as that of transportation of the film.
References Cited (Backward Citations)
US4373796A
Cited
US4355877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |