Abstract: A system of inscription on the marginal part of a perforated cinematographic film, of coded information and for reading this information, comprises, for inscription, an assembly of a plurality of light sources adjacent one another, disposed transversely opposite the marginal part of the cinematographic film. A write-in device selectively controls at each instant, the lighting of certain light sources, from among all of them, for the inscription on the film, in coded form, of a plurality of dots aligned transversely in a column. The system also comprises, for reading the coded information inscribed on the film, an assembly of photo-sensitive elements, adjacent one another, extending transversely opposite the marginal part of the film bearing the coded information. Means and provided for recognizing and identifying the combinations of dots inscribed on the film and corresponding to the various characters of information.

Abstract: A device for automatically metering and displaying the footage of delivered film contained in each of a plurality of interchangeable magazines adapted to be mounted on the body of a cinematographic camera comprises, on each magazine, an assembly of coded identification marks peculiar to each magazine. On the body of the camera, there is provided a device for reading and identifying the various assemblies of coded marks borne by the various magazines. The camera includes a memory with a plurality of zones allocated respectively to the various magazines and permanently containing information relative to the footage of flim consumed in each magazine. The camera also includes a microprocessor receiving signals coming from the device for identifying the magazines, as well as a metering pulse emitted by a pulse generator coupled to the motor driving the film and emitting a pulse for each image.