Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
0009
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

ENGSTROM, BEERS, AND BEDFORD [J. S. M. P. E. amplified by equipment using the Iconoscope, makes use of the principle of storage, whereby, when a particular photoemissive element is scanned, the light that has fallen upon that element since it was last scanned is effective in producing the signal. The characteristics of these pick-up tubes determine the manner in which film can be used to provide television programs. In the system using the dissector tube, which has no storage, for every instant the signal is transmitted the film projector must supply a light image to the elemental area being scanned, though not necessarily from the FIG. 1. Schematic of film projector for Iconoscope camera. entire frame. In the Iconoscope system, utilizing storage, a charge image may be built up by a very brief projection of the image upon the photoemissive mosaic, which is then scanned by an electron beam while the mosaic is dark, to produce the signal. The film pull-down occurs during the relatively long interval while the mosaic is being scanned. The detailed discussion to follow will be based on the system utilizing the Iconoscope. FILM TRANSMISSION SYSTEM UTILIZING THE ICONOSCOPE Fig. 1 shows schematically an Iconoscope camera and a special projector adapted to project standard 24-frame-per-second film upon the Iconoscope mosaic in such way as to generate television signals