Process and system for inscription of coded information on the marginal part of a perforated cinematographic film, and for reading this information

A system for inscribing coded information on a marginal portion of a perforated cinematographic film and for reading said information, comprising:

• a. an inscription assembly comprising a plurality of light sources disposed adjacent to one another and transversely opposite to said marginal portion of said cinematographic film;
• b. a write-in device for selectively lighting certain ones of said light sources while the film is moving for inscribing a plurality of dots aligned transversely in a column, said plurality of dots representing coded information and comprising a first framing pattern, a matrix of dots and a second framing pattern, said first framing pattern being disposed perpendicular to the length of the film, said matrix comprising a plurality of columns disposed perpendicular to the length of the film and a plurality of tracks disposed parallel to the length of the film, and said second framing pattern corresponding to one of said tracks;
• c. an assembly for reading said coded information inscribed on said film comprising a plurality of photo-sensitive elements disposed adjacent to one another and extending transversely opposite to said marginal portion of said film bearing said coded information;
• and
• d. means for recognizing and identifying combinations of dots inscribed on said film which correspond to various characters of information.

A system for inscribing coded information in a marginal portion of cinematographic film comprising:

• a. means for recording a first framing pattern comprising a unique pattern of dots;
• b. means for recording a matrix of dots while the film is moving comprising a plurality of columns and a plurality of tracks, said plurality of columns being transversely positioned with respect to the length of the film and said plurality of tracks being parallel with respect to the length of the film, each of said plurality of columns consisting of a pattern of dots which is different from said unique pattern of dots and which corresponds to a character in said coded information;
• and
• c. means for recording a second framing pattern corresponding to one of said plurality of tracks, said second framing pattern consisting of an alternating pattern of dots and the absence of dots aligned respectively with said plurality of columns in said matrix.

A strip of film having coded information inscribed in a marginal portion thereof comprising:

• a. a first framing pattern comprising a unique pattern of dots disposed perpendicular to the length of the film;
• b. a matrix of dots comprising a plurality of columns and a plurality of tracks, said plurality of columns being transversely positioned with respect to the length of the film and said plurality of tracks being parallel with respect to the length of the film, each of said plurality of columns consisting of a predetermined pattern of dots which is different from said unique pattern of dots and which corresponds to a character in said coded information;
• and
• c. a second framing pattern corresponding to one of said plurality of tracks, said second framing pattern consisting of a predetermined pattern of dots and the absence of dots aligned respectively with said plurality of columns in said matrix.