H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/39, 88/96.8
H04N 3/36 (2006.01) H04N 3/38 (2006.01) H04N 9/11 (2006.01)
Patent
CA 1149054
01-10-1979 1 PHN 9359 ABSTRACT: "Apparatus for converting cinematographic pictures into video signals". An apparatus is described for converting cine- matographic images into video signals. The film gate in which a frame to be scanned is located is illuminated uniformly. The film is scanned by means of a rotatable scanning mirror, which with the aid of an imaging system images one line of the film frame onto one row (three rows for colour film) of radiation sensitive detectors. The detectors of a row are read sequentially. The illu- mination beam has a large aperture angle in a first plane transverse to the direction of film transport and a small aperture angle in a plane transverse to the first plane. The film movement is detected with the aid of a sprocket hole detection system, in which an elongate narrow light spot, whose longitudinal direction is trans- verse to the direction of film transport, is projected onto the strip of film with the sprocket holes. The posi- tion of the scanning mirror is detected with the aid of two gratings of special shape.
346176
Compaan Klaas
Roos Jan
Van Kasteren Adrianus C.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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