Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Page scan 000189 from Journal of the Society of Motion Picture and Television Engineers

Record Details:

Title:
Journal of the Society of Motion Picture and Television Engineers
Date:
1950-1954
Publisher:
Easton, Pa. : The Society
Volume:
Journal of the Society of Motion Picture and Television Engineers
Leaf #:
000189
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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Fig. 17. Master monitor. monitor. Facilities are provided for switching to one of three input signals. A synchronizing signal interlock arrangement is provided to enable the unit to handle both composite and noncomposite signals. Picture and waveform monitor circuits are very similar to those used in the camera control unit. Accurate maintenance of black level is assured by means of a clamp on the cathode-ray tube grid. Three sweep rates are provided for the waveform monitor, corresponding to those in the camera control unit. The design and development of the equipment which has been described are the result of the efforts of a considerable number of engineers, both at General Precision Laboratory Incorporated and at Pye, Ltd., in Cambridge, England. Much credit goes to Messrs. J. E. Cope, L. W. Germany, and D. Jackson who were responsible for the work at Pye, Ltd. Discussion Barton Kr enter (RCA Victor Div., Camden, N.J.): Did I understand that this camera had a remotely controlled lens-selecting mechanism for changing lenses? As I understand it, it selects the shortest path for the incoming lens. The lens never has to travel as great an arc as the circle. What is the maximum time it would take to change the lens? Mr. Pourciau: I think it runs about 1 \ to 1^ seconds per lens, so that the maximum time would be about 2^ to 3 seconds. 180 February 1953 Journal of the SMPTE Vol. 60