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: Apparatus is provided for producing simultaneous visual and audio signals for synchronizing separate simultaneously produced visual and sound recordings, e.g., for use when making cinematographic or video recordings and separate sound track recording. The apparatus comprises means such as a keyboard for entering and storing a selected sequence of alpha/numeric characters, means such as a liquid crystal display for visually displaying an entered and stored sequence of alpha/numeric characters, speech synthesizer means for audibly sounding the entered and stored sequence of alpha/numeric characters, and means for simultaneously providing visual and audible start marks for synchronization.

Abstract: In the camera disclosed, the film loop between the film drive at an exposure aperture and the film drive at a sound recording station is sensed and the film is prevented from jamming by having a drive unit operate a film drive motor at the exposure aperture and a capstan motor at the sound recording station operate simultaneously only when the film loop is sufficiently small to prevent jamming, but by operating only the capstan motor, and delaying the film motor when the loop is too long.

Abstract: An accessory apparatus for producing visible information on a film in a moving picture camera by exposure of the film through optical indicating elements comprises an actuating circuit arrangement for the optical indicating elements. The circuit arrangement includes a driving circuit for actuating the indicating elements and a control circuit associated with the driving circuit. The driving circuit is responsive to the control circuit and the control circuit is controllable in response to the picture frequency of the camera. It comprises an electrical signal transmitting stage, a signal recording stage connected to the transmitting state and directly receiving the signal therefrom, the driving circuit and the signal transmitting stage being energizable simultaneously, and a blocking circuit stage de-energizing the control circuit after passage of a pre-selectable number of picture frames after the standard picture frequency has been reached.

Abstract: The camera includes a drive arrangement for effecting transport of sound motion-picture film through the camera along a predetermined path. A recording unit is operative for recording audio information onto the sound track of the motion-picture film. A suppressing device is automatically operative for preventing the recording of sound by the recording unit when the drive arrangement is being started up at the start of the filming of a scene and when the drive arrangement is being stopped at the end of the filming of a scene, to prevent the recording on the sound track of noise and interference signals generated by the drive arrangement.

Abstract: A portable slating device comprises a light-tight housing having a lens on the front thereof and a copyholder on the rear thereof. When the lens on the front end of the housing is positioned adjacent the lens of a movie camera whose scene takes are to be identified by slating information, the housing lens functions as a supplementary close-up lens cooperating with the camera lens to sharply focus the information in the copyholder onto the film in the movie camera. When the filming of a scene-take starts, the operator closes a switch for simultaneously energizing a synchronizing light bulb located within the housing and an audio signal device mounted on the housing to provide for synchronizing the visual action of the film with the sound track.

Abstract: A movie sound camera wherein the motor for the sound shaft of the sound recording unit is started by a self-arresting rotary programming device prior to completion of the circuit of a sound amplifier, and the circuit of the amplifier is completed prior to starting of the motor for the pull down in response to movement of camera release from the idle position. When the release is returned to the idle position, the programming device automatically arrests the motor for the pull-down prior and the motor for the sound shaft subsequent to opening of the amplifier circuit. The programming device further controls the sequence in which the film is pressed against the sound shaft and biased against the second recording head of the recording unit in response to movement of release from the idle position. The programming device forms part of a control unit and is rotated by a motor which is started in response to movement of release to or from the idle position.

Abstract: Film tensioning and controlling transport mechanism for a cinematograph film projector. The film take-up mechanism has a torque motor drive separate from the projector mechanism drive motor. The torque motor is energised first to tension film before the projector drive motor is energised. The torque motor is first energised with a series temperature-sensitive resistor so that torque, and film-tension, increases before the projector mechanism starts up. Film between the projector mechanism and the take-up spool is formed into a loop over a movable roller, which is spring-tensioned in the loop-lenghtening direction but is restrained by a dashpot in the loop-shortening direction. Film-tension reduces the loop length, but the projector drive motor is energised before the whole loop is taken up.