JPS5785044A - Film feed system - Google Patents
Film feed systemInfo
- Publication number
- JPS5785044A JPS5785044A JP16214080A JP16214080A JPS5785044A JP S5785044 A JPS5785044 A JP S5785044A JP 16214080 A JP16214080 A JP 16214080A JP 16214080 A JP16214080 A JP 16214080A JP S5785044 A JPS5785044 A JP S5785044A
- Authority
- JP
- Japan
- Prior art keywords
- perforation
- perforations
- capacitor
- circuit
- pulses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B1/00—Film strip handling
- G03B1/60—Measuring or indicating length of the used or unused film; Counting number of exposures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
- Winding Of Webs (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
PURPOSE:To generate two pulses per perforation by detecting adjacent parts of the parts between the perforations and perforations of a film. CONSTITUTION:In a circuit 5 constituted of an inverter N1, a capacitor C4, etc., the perforation signals from a perforation detecting circuit 1 are differentiated in a differentiating circuit consisting of the capacitor C4, etc., and are fed to an OR circuit OR2. The signals are next inverted in an inverter N1, are differentiated in a differentiating circuit consisting of a capacitor C5, etc., and are fed to an OR circit OR2. Hence, the output pulses of the OR2 are generated by each one when the part on a film F detected by an LED and a photodiode PD moves from a perforation to the part between perforations and from the part between the perforations to a perforation. Hence, with such constitution, two pulses are generated per perforation.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16214080A JPS5785044A (en) | 1980-11-18 | 1980-11-18 | Film feed system |
| US06/320,930 US4431292A (en) | 1980-11-18 | 1981-11-13 | Film feeding circuit |
| DE3152998A DE3152998C2 (en) | 1980-11-18 | 1981-11-17 | Control circuit for the film transport motor of a still camera |
| DE3152997A DE3152997C2 (en) | 1980-11-18 | 1981-11-17 | |
| DE3145594A DE3145594C2 (en) | 1980-11-18 | 1981-11-17 | Control circuit for the film transport motor of a still camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16214080A JPS5785044A (en) | 1980-11-18 | 1980-11-18 | Film feed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5785044A true JPS5785044A (en) | 1982-05-27 |
Family
ID=15748788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16214080A Pending JPS5785044A (en) | 1980-11-18 | 1980-11-18 | Film feed system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5785044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345286A (en) * | 1993-05-11 | 1994-09-06 | Eastman Kodak Company | Method and apparatus for controlling film drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49121524A (en) * | 1973-03-20 | 1974-11-20 | ||
| JPS50116027A (en) * | 1974-02-25 | 1975-09-11 |
-
1980
- 1980-11-18 JP JP16214080A patent/JPS5785044A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49121524A (en) * | 1973-03-20 | 1974-11-20 | ||
| JPS50116027A (en) * | 1974-02-25 | 1975-09-11 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345286A (en) * | 1993-05-11 | 1994-09-06 | Eastman Kodak Company | Method and apparatus for controlling film drive |
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