Color television camera

In an NTSC system color television camera with a shading correction circuit, the correction circuit comprises differential amplifier means for comparing a level difference between Y and R signals and between Y and B signals to produce analog difference signals, analog-to-digital converter means for...

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Hauptverfasser: SOKEI, HIROICHI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In an NTSC system color television camera with a shading correction circuit, the correction circuit comprises differential amplifier means for comparing a level difference between Y and R signals and between Y and B signals to produce analog difference signals, analog-to-digital converter means for converting levels resulting from sampling the analog signals by clock pulses into digital signals, a random access memory for storing and reading the digital signals, and shading amplifier means responsive to the read-out signals to perform such an amplification that the chrominance signal level is made equal to the luminance signal level.