Abstract: The disclosure is directed to techniques for transferring data files representing a digital motion picture to a motion picture system within a theater in a single step. More specifically, the techniques allow a user to press one button to initiate the transfer, or upload, of a plurality of data files stored on a data tape to a predetermined location within a data storage device within the theater. The single input from the user frees the user from completing the plurality of steps needed to manually select a desired data file from the data tape and find the location to transfer the data file. Instead, the data tape or user system may automatically identify the entire plurality of data files and the predetermined location at which to store the plurality of data files. The techniques facilitate the distribution of motion pictures from motion picture studios to theaters using magnetic tape media.

Abstract: A resin composition containing a mixture produced by blending a crystalline polyamide expressed e.g. by formula (1) (in the formula, R1 is a bivalent organic aromatic group or aliphatic group having a carbon number of 2 to 30, optionally having substituent and optionally containing non-reactive groups such as ether group and aromatic group in the main chain, and Ar1 is an aromatic residue having a carbon number of 6 to 45 and optionally having substituent) with a thermoplastic polyester. The resin composition has excellent mechanical characteristics such as high elastic modulus, flow properties and heat-resistance and is suitable as a material for an electronic part for surface mounting.

Abstract: A magnetic head device for reading and recording information from a magnetic recording section of a photographic film has a recording head and a playback head. The playback head and recording head are adjacently positioned by a head base plate. The head base plate rotatably supports the recording head and playback head as the head base plate rotates about a first rotation shaft and a second rotation shaft. The first rotation shaft extends in a direction of the film defined by movement of the film as film is wound onto a winding spool within a film cartridge. The second rotation shaft extends in a width direction of the film, perpendicular to the first rotation shaft. As a result the recording head and playback head make contact with the film to improve consistency of the playback and reading of information from the magnetic section of the film.

Abstract: The invention includes a method and integrated circuit for testing a disk drive. The invention internally generates test inputs to the host interface in the disk drive. The test inputs emulate the actual inputs that a host computer would provide to the host interface. One version of the invention includes a drive control integrated circuit. The drive control integrated circuit comprises: a host interface, a processor, a buffer control, and compare circuitry. The processor processes test instructions to initiate a test pointer. The buffer control transfers commands from a buffer to the host interface in response to the pointer. The processor controls a write operation and a read operation in response to the commands. The compare circuitry compares the data block that is written to the address with another data block that is read from the address. The compare circuitry generates an alarm if the data blocks do not match.

Abstract: An unexposed-frame determining apparatus which determines an unexposed frame by reproducing magnetic information recorded on a film, includes a magnetic information reproducing device which reproduces magnetic information recorded on the film, and a magnetic noise determining device which determines a state of magnetic noise obtained while the magnetic information reproducing device is reproducing magnetic information at a space between adjacent frames of the film.

Abstract: A magnetic information reproducing apparatus includes a head which reads magnetic information from a magnetic recording medium, and an electric wire for supplying electric power from a power supply to a load, the electric wire being so disposed as to generate a magnetic field which cancels a magnetic field generated by the power supply.

Abstract: A magnetic read-write device with a magnetic head consisting of a core and a coil. The read-write device is incorporated into in a camera. A writing circuit is connected directly and in parallel to the coil, for driving the coil with writing current in a writing mode for writing binary code data on a magnetic recording layer provided on photo film. The writing circuit has a pair of write control switches which are turned ON and OFF alternately to each other, to apply the writing current to the coil in alternating directions. An amplification circuit is also connected directly and in parallel to the coil. The amplification circuit amplifies signal voltage induced between terminals of the coil in a reading mode for reading binary code data from the magnetic recording layer, to output a reproduction signal. A switching transistor is connected in a line through which a drive voltage is supplied to the amplification circuit.

Abstract: A magnetic head attachment structure for a photographic film comprises a head unit for supporting magnetic heads which read and/or write magnetic information to or from the photographic film. The magnetic head attachment structure also includes a pressure unit for supporting bubble springs which press a magnetic recording surface of the photographic film to the magnetic heads. The bubble springs have a first condition where they are able to contact with the magnetic heads allowing the film to pass therebetween and a second condition where they are able to be selectively apart from the magnetic heads so that a pressure unit is able to rotate around the head unit on a shaft.

Abstract: A magnetic track on a roll of photographic film is divided into a leader track on the forward end part of the film and a frame track corresponding to each frame, which is located after the ladder part. A manufacturer identification code including the manufacturer code which is peculiar to the manufacturer, a function selection code indicating a specific function and the like is recorded in the leader track. In each frame track, magnetic information is stored which is determined by the manufacturer identification code, the function selection code and the like. Furthermore, a film image on a roll of developed film is read out, then an image of one or plural frames is displayed on a TV monitor. Users enter the above described magnetic information while looking at a display screen of the TV monitor so that magnetic information relating to a printing can be recorded easily and without mistakes.

Abstract: A process and device are disclosed for reading weak magnetically recorded signals from a photographic film provided with a transparent thin magnetic layer. The signals from a magnetic read head obtained from the moving film are pre-amplified and the pre-amplified signals are digitized, filtered, differentiated and evaluated. The output of the magnetic read head (2) is supplied to the pre-amplifier (5) in short-circuit. This means that the internal resistance R.sub.i of the magnetic head is very high compared to the input resistance R.sub.e of the amplifier connected immediately downstream of the magnetic read head coil.

Abstract: An apparatus provided with a magnetic head including a core, a writing coil and a reading coil wound around the core; a writing circuit connected with the writing coil for driving the writing coil; a reading circuit connected with the reading coil for generating a read signal based on an output of the reading coil; a power source for supplying an electric power to the writing circuit; and a controller for suspending the supply of electric power to the writing circuit when the reading circuit is in operation.

Abstract: In a disk storage drive having a CPU, a disk and an EEPROM, the CPU measures throughput performance. The CPU measures the throughput performance for a measured area provided on a data-recording surface of the disk, in response to a test command supplied from a host system. The measured area consists of three zones designated by a pointer stored in the EPROM. The CPU stores the throughput performance measured for the measured area, into the EEPROM, and updates the pointer so that the CPU may measure the throughput performance for the next measured area provided on the data-recording surface.

Abstract: A film pressure plate is provided with a magnetic head which records magnetic information in a magnetic recording section at lower edge of photographic film. A saddle-shaped pad is arranged at the front of a rail plate in such a manner as to face the magnetic head. There is provided a leaf spring for pushing the pad from an opening formed in the rail plate in a direction for the pad to advance onto a film feed path such that a longitudinal direction of the leaf spring corresponds to the film feed direction. A fixed end of the leaf spring is fixed at the upstream of a direction in which the film is fed when the magnetic data are recorded. Thereby, the pad can stably contact with the face of the film while the film is being fed, and the magnetic recording section on the film can come into contact with the magnetic head in a stable manner.

Abstract: An apparatus in use of a film having information recording section, wherein a magnetic head is held with a head guide member which is disposed on a pressure holder, so that the magnetic head could be movable and rotatable in a perpendicular direction to a film plane. When an magnetic recording or reading is executed during a film feeding operation, the magnetic head may keep touching closely with a film plane, thereby an accurate magnetic or recording can be executed.

Abstract: Photographic apparatus for recording/reproducing information in a magnetic region along an edge of photographic film, the apparatus comprising:a magnetic head supported by said apparatus in contact with a magnetic region of film transported past the magnetic head, the magnetic head having a frustum shape in the direction of film transport with at least one magnetic gap at the center of the frustum, wherein the magnetic head-to-film interface is concentrated in those regions immediately surrounding the gap regions.

Abstract: A magnetic recording method for recording binary code data on magnetic recording tracks formed with a constant length on photo film. Each bit of the binary code data is recorded as a bit segment constituted of a first kind magnetic zone and a second kind magnetic zone magnetized in reverse to the first kind magnetic zone. The first kind magnetic zone has a shorter length of less than 50% of the bit segment or a longer length of more than 50% of the bit segment depending upon which binary value is assigned to the bit segment. The length of each bit segment is determined for each magnetic recording track based on a total number of bits of binary code data to be recorded on that magnetic recording track, such that as the total bit number decreases, the number of bits to be recorded per unit length decreases. Also, the percentage in length of the first kind magnetic zone is adjusted to be closer to 50% of the bit segment for both binary values, as the total bit number increases.

Abstract: A camera of the kind having a magnetic head for magnetically recording data in a track part of each frame portion of a film is arranged such that, in re-recording information in the track part having a previous record of data, a predetermined signal for erasing information is supplied to the head during a period other than a period during which a data signal is supplied to the head, so that new data can be recorded by completely erasing, without fail, the previous record of data in carrying out the re-recording.

Abstract: A light source illuminates a developed silver salt photographing film having a magnetic recording portion on which magnetic data is recorded. A light source drive section drives the light source. An image read section reads image data from the film illuminated by the light source. A reproduction section reproduces magnetic data recorded on the magnetic recording portion of the film. A power feeding control section prohibits a power feeding to the light source drive section or reduces an amount of power feeding when the magnetic data is reproduced by the reproduction section.

Abstract: A method and apparatus for reading and/or recording information on a photographic element having a thin magnetic layer. The apparatus includes a magnetic head assembly having a read and/or write head having an outer engaging surface for contacting the magnetic layer. The outer engaging surface has at least one pole for reading or writing information on the magnetic layer and a protective layer and is made of a material having a Vickers hardness equal to or greater than 1000 kg/mm.sup.2. A spring is provided for applying a substantially perpendicular loading force between the photographic element and the magnetic read and/or write head. The substantially perpendicular loading being equal to or greater than about 10 gm/mm.sup.2.

Abstract: A camera and a video filing system practicable therewith are disclosed. The camera has a body and a plurality of component parts removably mounted on the body and including a lens and a stroboscope. The body and component parts each has a respective condition data output section for outputting shooting conditions, and a respective ROM (Read Only Memory) storing a type and other inherent data beforehand. A processor reads the data from such condition data output sections and ROMs at the time of shooting and records them in a magnetic recording area formed in a silver halide sensitive type of film. As a result, images are recorded in the film together with shot data associated therewith. The video filing system automatically reads the image data and shot data out of the film and records the image data in an optical disk or similar recording medium by using the shot data as keywords, thereby constructing a video data base.

Abstract: A portable and economical telecine machine for rapidly converting images recorded on motion picture film to electronically available and manipulable video signals with extremely high frame accuracy and temporal correspondence. On a commercially-available flatbed editing table, motion picture film passes through a light-tight enclosure surrounding a strobe, the film, a mirror, and a video camera. When the film is centered between the strobe and the camera, the strobe flashes to optically transmit the film image to the video camera. The film is then advanced exactly one single film frame to record the next image. In this way, film images are recorded frame by frame by a video camera, converting the film images into video signals. Passage of the film is monitored by a film sprocket coupled to a bi-phase encoder. When the image is optically transmitted to the camera, it is recorded in the two next available video fields by the video camera.

Abstract: Digital audio signals and a conventional audio track are recorded on a motion picture film by error correction encoding digital audio data to be recorded on the film, sequentially arranging the error encoded digital audio data in a direction perpendicular to the direction of advancement of the film by utilizing two areas or more of an area in the vicinity of one end of the film which is parallel with the other end of the film and which is laid between it and one end portion of an analog sound track or an area near the other end of the analog sound track, and recording the same.

Abstract: A photofinishing apparatus for reading and/or writing magnetic information on a web of photographic film. The web comprises a plurality of individual strips of film secured together end to end. The apparatus includes a film track for receiving the web, a pair of drive rollers for moving the film web through the film track, a magnetic reader and/or writer for reading and/or writing magnetic data on the web, and a detection device for detecting metal objects in the web. The detection device is located at a point in the film track prior to the magnetic reader and/or writer. A monitoring device monitors the change in voltage across two space points on the film track for determining when a metal object is in the web and for producing a signal which is used to stop the film web.

Abstract: A camera comprises a photographic information output circuit section, a CPU, a PPM signal conversion circuit section, a drive section for a plurality of magnetic heads, and a film feeding section. The CPU converts several parallel data items which are output from the photographic information output circuit section into a single serial data item and outputs it to the PPM signal conversion circuit section provided separately from the CPU. The PPM signal conversion circuit section converts this single serial data item into several PPM signals, and then supplies the PPM signals to the magnetic head drive section.

Abstract: A motion picture film capable of reproducing the sound field full of ambience in the reproducing system. The digital sound tracks 5L and 5R, on which digital audio data have been recorded, are recorded so that temporally same digital audio signals are recorded with a spatial shift by a preset distance along the film running direction.

Abstract: A photographic printing apparatus includes an exposure station disposed in a midway region of a transfer path between a transfer inlet and a transfer outlet along which a negative film having magnetic recording tracks provided thereon is transferred forwardly and backwardly. A magnetic read head disposed between the transfer inlet and the exposure station, the magnetic read head being spaced from a center line of the exposure station by a distance which is equal to a sum of an integer multiple of the pitch length of one frame on the negative film and a half of the same.

Abstract: A magnetic read/write head suspension assembly for achieving high magnetic head compliance with at least one edge track of the MOF layer of relatively stiff photographic filmstrips particularly during photofinishing operations. The filmstrip has an emulsion layer side opposite to the MOF layer side and exhibits a positive cross-film curvature toward the emulsion side when unrestrained. Filmstrip edge guides including parallel angled channels extending in a film transport path receive the filmstrip edge regions. One or more magnetic read/write head is mounted in the edge guides with the magnetic head gap length oriented in alignment with the angle of the MOF layer of the filmstrip edge region received in the channel and makes compliant line contact of the magnetic head gap with the MOF layer side in the edge region without imparting drag on the central region of the filmstrip.

Abstract: A camera and a video filing system practicable therewith are disclosed. The camera has a body and a plurality of component parts removably mounted on the body and including a lens and a stroboscope. The body and component parts each has a respective condition data output section for outputting shooting conditions, and a respective ROM (Read Only Memory) storing a type and other inherent data beforehand. A processor reads the data from such condition data output sections and ROMs at the time of shooting and records them in a magnetic recording area formed in a silver halide sensitive type of film. As a result, images are recorded in the film together with shot data associated therewith. The video filing system automatically reads the image data and shot data out of the film and records the image data in an optical disk or similar recording medium by using the shot data as keywords, thereby constructing a video data base.

Abstract: A photographic still camera for receiving an elongated filmstrip having a cross-film curvature and having a substantially transparent magnetic layer deposited on the film surface and recording or reproducing information on or from the magnetic layer in the image frame areas of the filmstrip. The filmstrip is transported from supply to takeup chambers between film rails and a backing plate past a camera image frame exposure aperture with the magnetic layer facing the backing plate and having a concave cross-film curvature near one side of the exposure aperture. A plurality of inverted gull wing shaped, spring flexure elements are positioned to extend across the magnetic layer at the side of the exposure aperture. Each flexure element has a fixed mounting plate attached to the backing plate coupled through an angled fixed leg to a mounting platform which in turn is coupled through a further angled leg back to a further plate such that the mounting plate is suspended toward the filmstrip magnetic layer.

Abstract: A photographic still camera for receiving an elongated filmstrip having a cross-film curvature and having a substantially transparent magnetic layer deposited on the film surface and for recording or reproducing information on or from the magnetic layer in relation to the exposure of image frames of the filmstrip. The filmstrip is transported from supply to takeup chambers between film rails and a backing plate past a camera image frame exposure aperture with the magnetic layer facing the backing plate and having a concave cross-film curvature across the image frame area. A magnetic recording multi-head array formed of a plurality of recording heads mounted on flexure elements of a flexure support is positioned to extend across and contact the magnetic layer in the image frame area at the side of the exposure aperture.

Abstract: A device for recording/reproducing a digital pattern as a sound track of a cinefilm is disclosed. The device includes a cinefilm 1 having an image recording area 2 in which an image is recorded, a perforation section 3 for film feed and digital pattern data recording areas 5 and 6 provided in the vicinity of the perforation section 3. Plural channels of audio data are recorded as the digital patterns in the digital pattern data recording areas.

Abstract: An image reproducing apparatus for reproducing an image recorded on successive frames of a film having a storage medium which information for each frame is readable from and writable on, the reproducing apparatus includes a pick-up device for picking up the image from the film; a read and write device for reading and writing frame information from and on the storage medium in a specified relative movement to the film; a drive device for rendering the specified relative movement and such special relative movement as fast transporting, rewinding; a directing device for directing the special relative movement; and a controller for keeping the drive device from rendering the special relative movement when the information reading and writing is performed.

Abstract: A magnetic reading and/or recording apparatus for reading and/or recording information from/on a magnetic information track on a web comprises a magnetic reading and/or recording element and a flexible member for supporting the magnetic reading and/or recording element for rotation about an axis perpendicular to a longitudinal axis of the web while restraining the magnetic reading and/or recording element from rotating about an axis parallel to the longitudinal axis of the web and an axis in a direction transverse to the longitudinal axis of the web.

Abstract: The present invention comprises a method and apparatus for recording digital audio information using light modulation of a laser beam on cinefilm. In the invention, a laser beam of low coherence and high output is radiated from a semiconductor laser having a wide radiating area, modulated within the depth of focus of the laser beam, and then illuminated on a sound track of a cinefilm. In one embodiment the laser beam is bifurcated into first and second beams using a diffraction lattice. The invention shortens the recording time for voice data, reduces speckle noise, and eliminates the need for polarizing plates, thereby simplifying the structure and reducing the production costs of the recording apparatus.

Abstract: A motion picture film is provided on which a digital sound track for audio data is formed along the film running direction. Data tracks are disposed in the digital sound track along a direction normal to the film running direction and extend in the film running direction. A data pattern having a block of audio data is recorded in the data tracks, along with tracking patterns representing each data track. Each of the tracking patterns is recorded at one side of the data track along the film running direction with an offset in the film running direction of one half the width of a data track from the center of that data track.

Abstract: Method and apparatus for applying encoded data on the balance stripe of sound track, the data for providing information for editing an associated film without recording the data on the film. The present invention teaches an apparatus for applying code for synchronizing sound on a single strip of the sound track with an associated film. The apparatus includes a code box for generating the code, which relates the position of the film relative to the sound track. The code box is coupled to an editing flatbed for providing pulses related to the movement of the sound track. A sound module is coupled to the code box for applying the code to the balance stripe.

Abstract: A camera includes a photographic information output circuit section, a CPU, a PPM signal conversion circuit section, a drive section for a plurality of magnetic heads, and a film feeding section. The CPU converts several parallel data items which are output from the photographic information output circuit section into a single serial data item and outputs it to the PPM signal conversion circuit section, which then converts this single serial data item thus output from the CPU into several PPM signals, and then the PPM signal conversion circuit section supplies the PPM signals to the magnetic head drive section.

Abstract: A supporting device to support a magnetic head in close proximity to a photographic film passage so that the track section of the magnetic head is brought in contact with a magnetic layer on the film, includes a supporting member, a fixing member on which the magnetic head is fixed, two supporting resilient arms one ends of which are fixed to the fixing member and the other ends are fixed to the supporting member. The two supporting arms are fixed in such manner that the two supporting arms are inclined relative to a surface of the fixing member and imaginary lines which are colinear with and extend from the two first supporting arms cross each other at an imaginary line which is colinear with and extends from a magnetic gap of the track section of the magnetic head.

Abstract: In an information recording apparatus, light containing information to be recorded is generated, and a photo-to-electric converting device serves to convert the light into a charge latent image. The photo-to-electric converting device includes a photoconductive member exposed to the light. Information corresponding to the charge latent image is recorded on a recording medium. A first recording device serves to record main information on a first region of the recording medium. A second recording device separate from the first recording device serves to record sub information on a second region of the recording medium. The second region is different from the first region.

Abstract: A magnetic head suspension apparatus for reading and/or recording information during photofinishing of photographic filmstrips comprises an elongated pivotally mounted follower bar having a pair of magnetic heads attached thereto in a predetermined orientation with the information tracks on the filmstrip. A pair of film edge followers are pivotally attached to the ends of the bar respectively. A spring is connected between the bar and a fixed support to bias the bar to urge the edge followers into engagement with the film edges of the filmstrip.

Abstract: In a photographic camera, a combined light source/magnetic head writes data into a magnetic recording material of a photographic filmstrip in a data track and exposes a guide track in a predetermined location relative to the data track during advancement of the filmstrip. The filmstrip is advanced past the combined light source/magnetic head and the light source is energized to optically expose the guide track while the magnetic head is operated to write the data. After processing of the filmstrip, the guide track is made visible. A processor can receive the filmstrip and use the guide track to properly position a magnetic read head in proper relation to the recorded data track to retrieve the data.

Abstract: At least one of an error detection code for detecting an error in information to be recorded and an error correction code for correcting the error in the information is added to the information, and the information with at least one of the error detection code and the error correction code added thereto is recorded in a magnetic recording section provided in a photographic film. The information recorded in the magnetic recording section of the photographic film is read, and at least one of the detection of an information-reading failure and the correction of the error in the information is effected on the basis of at least one of the error detection code and the error correction code added to the information which has been read.

Abstract: A video theater system includes a video cassette recording at least a component video signal to which a copy preventive scheme has been applied; a video cassette recorder for reproducing the video cassette; a tuner and an antenna for receiving a signal transmitted via a satellite; a controller device for controlling the video cassette recorder and the tuner; means for releasing the copy preventive scheme; and a projector for projecting a video image from which the copy preventive scheme has been released. The copy preventive scheme is applied, while at least a synchronizing signal is retained, to a protected video signal at a point between dubbing of the master tape to the distribution tape after a video conversion and the second video cassette recorder. This copy preventive scheme is released by means of a device and circuit following a video cassette recorder used to reproduce the video signal in readiness for the projection thereof onto a screen.

Abstract: A magnetic reading and/or recording apparatus includes a plurality of magnetic reading and/or recording elements to read and/or record information from/on a flexible magnetic recording material and a flexible plate having several cut-outs arranged to define individual flexible sections of said plate between respective pairs of said cut-outs. The magnetic reading and/or recording elements and the flexible plate are arranged to position the flexible sections of the plate to support respective flexible sections of the flexible magnetic recording material substantially in contact with the magnetic reading and/or recording elements.

Abstract: A magnetic reading and/or recording apparatus for reading and/or recording information from/on a magnetic information track on a photosensitive medium includes a magnetic reading and/or recording element connected to an edge follower having a variable tracking position. The edge follower tracks a longitudinal edge of a moving photosensitive medium by adjusting with the photosensitive medium responsive to any departures of the photosensitive medium from a defined path to effect a constant orientation of the magnetic reading and/or recording element with respect to the longitudinal edge of the photosensitive medium.

Abstract: An information signal recording apparatus arranged to form a recording track on a recording medium by recording an information signal on the recording medium, in which the information signal is recorded on the recording medium in such state that a first tracking control signal, for effecting a first tracking operation during reproduction, is superimposed thereon, in the case where a stop of the recording track forming operation is not instructed, and the information signal is recorded on said recording medium in such state that a second tracking control signal, for effecting a second tracking operation during reproduction, is superimposed on the information signal, depending upon a timing when the stop of the recording track forming operation is instructed, whereby a position where the first tracking operation becomes impossible on the way of effecting the first tracking operation during reproduction is detected, so that a position of the step of the recording track forming operation on the recording medium c

Abstract: A magnetic head suspension system for use in a photofinishing operation comprises a fixed support and a pair of magentic head suspension assemblies each rotatably mounted on the support. The magnetic head suspension assemblies are biased towards each other to engage opposite edges of the film respectively. Each magnetic head suspension assembly is rotatable relative to the fixed support to compensate for film width variations and film edge irregularities to insure constant orientation of the magnetic heads with respect to the film edges.

Abstract: A head suspension system for use in a photofinishing operation comprises a movable support mounted for movement through an arc having a predetermined radius and a pair of magnetic head suspension assemblies each rotatably mounted on the movable support. The suspension assemblies are biased towards each other to cause surfaces of the magnetic head assemblies to engage opposite edges of a photographic film respectively. The entire system including the movable support is movable through an arc to adjust for angular variations of the film while each head suspension assembly is rotatable relative to the movable support to compensate for film width variations and film edge irregularities to insure constant orientation of the magnetic heads with respect to the film edges.

Abstract: Process for making an improved duplicate negative from an original color motion picture negative by using optical color filters with flying spot scanning of the original negative to generate tri-color separation analog video signals. These signals are transmitted through active and/or passive electronic filters, at which stage the signals may be optionally modified. The signals are used to create images on a black and white cathode ray tube. A lens projects these images through optical color filters to create a latent image in each of the three emulsion layers of a color sensitive motion picture film. This process is repeated for each frame of the original negative, after which the exposed film is developed in the conventional way, resulting in a duplicate negative, suitable for use for release printing.

Abstract: An apparatus and process for providing an automated edit procedure between film and video formats is provided wherein a video edit becomes within one video field the exact replica of a film edit. Film frames (1/24th of a second) are read by video scans (1st and 2nd fields in 1/30th of a second) in a 3:2 pull down wherein successive movie frame scans are provided with four classes of video scans. These classes of video scans include (Class A) odd/even scans; (Class B) odd/even/odd scans; (Class C) even/odd/scans; and, finally (Class D) even/odd/even scans. All edits are limited to film frame edits. Each time a film frame edit is converted to a video edit decision, the system looks at the edit out frame type and/or the edit in frame type and the cumulative current overall time differential between the video run time and the film run time for the edit. Frames are added or subtracted to keep the total error within + or - one field and a new cumulative error calculated for the next sequential edit.