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TV Video-Level ControllerConstant output maintained, though luminance varies by 5 million to 1. Three means of normalizing video output utilized in video-level controller: iris adjustment, tube voltage adjustment, and automatic gain control. With aid of automatic light control and gain control, television camera accommodates maximum light level 5 million times greater than lowest light level, while outputting constant 3-V peak signal to processing circuitry.
Document ID
19860000116
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Kravitz, M. (RCA Corp.)
Freedman, L. A. (RCA Corp.)
Fredd, E. H. (RCA Corp.)
Denef, D. E. (RCA Corp.)
Date Acquired
August 12, 2013
Publication Date
May 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 2
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
MSC-18578
Accession Number
86B10116
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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