GB1328830A - Film frame displaying apparatus and method - Google Patents
Film frame displaying apparatus and methodInfo
- Publication number
- GB1328830A GB1328830A GB6021570A GB6021570A GB1328830A GB 1328830 A GB1328830 A GB 1328830A GB 6021570 A GB6021570 A GB 6021570A GB 6021570 A GB6021570 A GB 6021570A GB 1328830 A GB1328830 A GB 1328830A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- frames
- speed
- pulses
- count
- 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
- G06K17/0016—Selecting or retrieving of images by means of their associated code-marks, e.g. coded microfilm or microfiche
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/10—Projectors with built-in or built-on screen
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
- G03B21/111—Projectors with built-in or built-on screen for microfilm reading of roll films
- G03B21/113—Handling roll films
-
- 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
- G03B23/00—Devices for changing pictures in viewing apparatus or projectors
- G03B23/08—Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier
- G03B23/12—Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier linear strip carrier
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Tents Or Canopies (AREA)
Abstract
1328830 Displaying selected film frames SAAB-SCANIA AB 18 Dec 1970 [22 Dec 1969] 60215/70 Heading G4H An apparatus for displaying single film frames from a series of frames on a strip includes a means for comparing the number of frames to be passed before the selected frame is reached with a predetermined number, and a control and drive means for feeding the strip past the display point at a fixed speed when the number of frames to be fed exceeds the predetermined number, for reducing the feeding speed when the number of frames to be fed is less than the predetermined number, the decreasing velocity being dependent on the number of frames remaining to be fed, and for holding the selected frame at the display point. Two motors each connected to a spool on which the film strip is mounted are provided, the motors being operative to drive the strip in different directions. A computer presets the contents of counter 30 to the number of frames to be passed and sets one or other of flip-flops 67, 68 in accordance with the direction of feed. Each frame is marked and as the strip is transported two photoelectric detectors detect the marks and generate a train of pulses S 1 and S 2 which are gated to the counter 30 to decrement the count. The upper stages of the counter are coupled to an OR gate 49 which produces an output if the count is greater than 32. This output 50 is passed to a summing point 35 and thence to the drive control (FET's 69-72) which, in accordance with the direction signals from flip-flops 67, 68 activate the appropriate motor, the other motor being short circuited to provide a brake and keep the strip under tension. When the count drops below 32 the signal 50 is absent and the speed of the motor is determined by the digital/analogue converter 37, the speed being proportional to the count. In both cases the pulses S 1 and S 2 from the photocells are differentiated (at 56-59) to produce a pulse train the frequency of which is indicative of the actual speed of the strip. These pulses, via a monostable 61 and a converter 62, produce a signal which is passed to the summing point 35 to provide a feedback control in order to match the speed of the strip to the required speed. The braking motor is supplied with a braking voltage when the counter 30 is registering less than 32. The signal from the OR gate 49 indicating a count of more than 32 is inverted at AND gate 63 to which the differentiated pulses S 3 are also fed. Thus flip-flop 65 is activated via monostable 64 in phase with the pulses S 3 when the counter contents are less than 32. The resulting signal is converted at 66 and applied to the drive control circuit (69-72) to provide a braking signal for the appropriate motor. Thus as the selected frame nears the display point the speed of the strip is reduced. A further pair of photoelectric cells 27 and 28 are provided which centre on a mark on the stationary selected frame and provide holding signals to the drive control in order to ensure that the motors supply equal and opposite driving forces and the selected frame remains at the display point.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE17680/69A SE331790B (en) | 1969-12-22 | 1969-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1328830A true GB1328830A (en) | 1973-09-05 |
Family
ID=20303858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6021570A Expired GB1328830A (en) | 1969-12-22 | 1970-12-18 | Film frame displaying apparatus and method |
Country Status (7)
Country | Link |
---|---|
US (1) | US3728685A (en) |
BE (1) | BE760609A (en) |
CH (1) | CH524154A (en) |
FR (1) | FR2071995B1 (en) |
GB (1) | GB1328830A (en) |
NL (1) | NL7018734A (en) |
SE (1) | SE331790B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2149545A (en) * | 1983-09-29 | 1985-06-12 | Canon Kk | Image display apparatus |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2325989A1 (en) * | 1975-09-26 | 1977-04-22 | Int Vibration Engin | Aircraft controls visualisation system - uses cassettes carrying tape with sign indications along its length |
US4032897A (en) * | 1975-11-18 | 1977-06-28 | National Board Of Medical Examiners | Interactive audiovisual display system |
US4073011A (en) * | 1976-08-25 | 1978-02-07 | Del Mar Avionics | Electrocardiographic computer |
NL7713709A (en) * | 1977-12-12 | 1979-06-14 | Philips Nv | MAGNETIC TAPE TRANSPORT SYSTEM AND MAGNETIC TAPE CASSETTE FOR A MAGNETIC TAPE TRANSPORTS SYSTEM AND MAGNETIC TAPE RECORDING AND / OR DISPLAY DEVICE EQUIPPED WITH A MAGNETIC TAPE TRANSPORT SYSTEM. |
US4356521A (en) * | 1979-10-18 | 1982-10-26 | A. H. Hunt, III | Magnetic tape position display system for a sound reproduction system |
FR2483090A1 (en) * | 1980-05-23 | 1981-11-27 | Parisot Daniel | AUTOMATIC SEARCH MICROFICHES READER USING A MICROCOMPUTER |
US4731679A (en) * | 1984-09-20 | 1988-03-15 | Ampex Corporation | Method and apparatus for transporting a recording medium with an adaptive velocity change profile |
DE102006049904B4 (en) * | 2005-10-24 | 2009-10-29 | DENSO CORPORATION, Kariya-shi | Tilt sensor for a vehicle, as well as anti-theft system with it |
GB2448304B (en) * | 2007-03-07 | 2009-03-11 | Zipher Ltd | Tape drive |
GB2448303B (en) * | 2007-03-07 | 2009-03-11 | Zipher Ltd | Tape drive |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2941124A (en) * | 1952-04-26 | 1960-06-14 | Curtiss Wright Corp | Tape feeding means |
US2814676A (en) * | 1954-09-23 | 1957-11-26 | Anderson Nichols & Company | Tape-stepping device for high-speed magnetic recording |
US2867791A (en) * | 1956-07-20 | 1959-01-06 | Gen Electric | Control apparatus |
NL268455A (en) * | 1960-08-26 | |||
US3191006A (en) * | 1961-10-09 | 1965-06-22 | Emik A Avakian | Information storage, retrieval, and handling apparatus |
US3365702A (en) * | 1964-01-14 | 1968-01-23 | Herner & Company | Magnetic-tape information storage and retrieval |
US3484751A (en) * | 1966-07-19 | 1969-12-16 | Fma Inc | Storage and retrieval of graphic information |
GB1168178A (en) * | 1966-12-19 | 1969-10-22 | Sony Corp | Improvements in Data Retrieval Systems |
US3641504A (en) * | 1969-02-20 | 1972-02-08 | Ampex | Apparatus for transporting a recording medium for storing information |
-
1969
- 1969-12-22 SE SE17680/69A patent/SE331790B/xx unknown
-
1970
- 1970-12-18 GB GB6021570A patent/GB1328830A/en not_active Expired
- 1970-12-18 CH CH1882270A patent/CH524154A/en not_active IP Right Cessation
- 1970-12-21 US US00099849A patent/US3728685A/en not_active Expired - Lifetime
- 1970-12-21 BE BE760609A patent/BE760609A/en unknown
- 1970-12-22 FR FR707046297A patent/FR2071995B1/fr not_active Expired
- 1970-12-23 NL NL7018734A patent/NL7018734A/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2149545A (en) * | 1983-09-29 | 1985-06-12 | Canon Kk | Image display apparatus |
Also Published As
Publication number | Publication date |
---|---|
US3728685A (en) | 1973-04-17 |
BE760609A (en) | 1971-05-27 |
FR2071995A1 (en) | 1971-09-24 |
CH524154A (en) | 1972-06-15 |
NL7018734A (en) | 1971-06-25 |
SE331790B (en) | 1971-01-11 |
FR2071995B1 (en) | 1973-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |