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ZENTRALLABORATORIUM RUNDFUNK
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ZENTRALLABORATORIUM RUNDFUNK
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Publication of FR2189963A1publicationCriticalpatent/FR2189963A1/fr
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Publication of FR2189963B3publicationCriticalpatent/FR2189963B3/fr
H04N5/14—Picture signal circuitry for video frequency region
H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
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Transforming Electric Information Into Light Information
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