GB1360625A - Method of and apparatus for detecting image fields on a strip of film - Google Patents
Method of and apparatus for detecting image fields on a strip of filmInfo
- Publication number
- GB1360625A GB1360625A GB3246071A GB3246071A GB1360625A GB 1360625 A GB1360625 A GB 1360625A GB 3246071 A GB3246071 A GB 3246071A GB 3246071 A GB3246071 A GB 3246071A GB 1360625 A GB1360625 A GB 1360625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- indicative
- punching
- image
- compared
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
Abstract
1360625 Controlling punching or marking operations CIBA-GEIGY AG 9 July 1971 [9 July 1970 18 June 1971] 32460/71 Heading G4H [Also in Division G1] Method and apparatus for registering a punching operation in a photographic film strip uses a plurality of photo-electric detectors arranged in a row perpendicular to the film length and the direction in which it is moved, each coupled to a Schmitt trigger to provide a "1" or "0" output according to the intensity of light sensed, the outputs of all the trigger circuits being added and continuously compared with two threshold levels as the film is moved by a stepping motor, the added output also being differentiated and compared with a further threshold, also indicative of polarity. When a frame beginning or end edge passes, the summed digital outputs vary greatly, and pulses indicative of a rise or a fall with respect to the threshold levels are produced. Continuous signals are also produced as and when the summed output is above or below the thresholds and these are logically compared with the pulsed signals to provide pulsed signals indicative of a possible edge of the image. All the circuitry is controlled by a clock which also controls the stepping motor. In the event of a signal indicative of a possible image start being produced, this is delayed by a shift register to be emitted a few clock pulses prior to the corresponding end edge pulse and the two signals are compared with respect to time to provide a positive pulse indicative of an image end edge if the possible beginning and end signals occur within a particular time interval, spurious pulses emitted owing to the peculiarities of the image within the frame thereby being ignored. These signals are successively grouped over 3 frames using shift registers and again if all three pulses in a group are emitted within a particular time interval, a punching command is transmitted. The stepping motor is halted until verification that the punching has been carried out is provided.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1038070A CH539283A (en) | 1970-07-09 | 1970-07-09 | Method and device for the detection of the image fields located on a film strip |
| CH892871A CH553431A (en) | 1971-06-18 | 1971-06-18 | METHOD AND DEVICE FOR DETECTING THE IMAGE FIELDS ON A FILM STRIP. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1360625A true GB1360625A (en) | 1974-07-17 |
Family
ID=25703988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3246071A Expired GB1360625A (en) | 1970-07-09 | 1971-07-09 | Method of and apparatus for detecting image fields on a strip of film |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS565976B1 (en) |
| CA (1) | CA972046A (en) |
| DE (1) | DE2134097C3 (en) |
| FR (1) | FR2100435A5 (en) |
| GB (1) | GB1360625A (en) |
| SE (1) | SE358744B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2701088C2 (en) * | 1977-01-12 | 1986-04-17 | Geimuplast Peter Mundt Gmbh & Co Kg, 8105 Farchant | Method and device for the exact positioning of a film moving step by step |
| DE2705097C3 (en) * | 1977-02-08 | 1981-05-21 | Agfa-Gevaert Ag, 5090 Leverkusen | Method and device for the automatic recognition of the image fields lying in a film strip |
| DE2809057C2 (en) | 1977-03-02 | 1997-03-20 | Canon Kk | Copier |
| JPS53107844A (en) * | 1977-03-02 | 1978-09-20 | Canon Inc | Picture image forming device |
| IT1217277B (en) * | 1983-11-17 | 1990-03-22 | Gregoirs Photo Equipment Di Gi | METHOD AND MACHINE TO FRAME AUTOMATICALLY OR LESS PHOTOGRAPHIC FILMS IN SPACES OF PREDETERMINED LENGTH IN FRAMES MECHANICALLY OPENED FROM ONE SIDE ELASTICALLY AND PHOTOGRAPHS SO OBTAINED |
| DE3436874C2 (en) * | 1984-10-08 | 1995-09-28 | Geimuplast Mundt Kg Peter | Device for automatically determining the position of the image bridges on a reversal film |
| DE3737797C2 (en) * | 1987-11-06 | 1998-03-26 | Agfa Gevaert Ag | Process and device for processing developed photographic films |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3435243A (en) * | 1966-01-03 | 1969-03-25 | Xerox Corp | Film frame detection system |
| DE1285317B (en) * | 1966-02-25 | 1968-12-12 | Agfa Gevaert Ag | Method and device for automatic recognition of the webs dividing a film strip into image fields |
-
1971
- 1971-07-08 SE SE885571A patent/SE358744B/xx unknown
- 1971-07-08 DE DE19712134097 patent/DE2134097C3/en not_active Expired
- 1971-07-08 FR FR7125095A patent/FR2100435A5/fr not_active Expired
- 1971-07-09 CA CA117,812A patent/CA972046A/en not_active Expired
- 1971-07-09 JP JP5098471A patent/JPS565976B1/ja active Pending
- 1971-07-09 GB GB3246071A patent/GB1360625A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2100435A5 (en) | 1972-03-17 |
| JPS565976B1 (en) | 1981-02-07 |
| SE358744B (en) | 1973-08-06 |
| DE2134097B2 (en) | 1979-06-21 |
| DE2134097C3 (en) | 1986-07-31 |
| CA972046A (en) | 1975-07-29 |
| DE2134097A1 (en) | 1972-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |