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Publication of NL75753CpublicationCriticalpatent/NL75753C/xx
H04N5/222—Studio circuitry; Studio devices; Studio equipment
H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03G—CONTROL OF AMPLIFICATION
H03G3/00—Gain control in amplifiers or frequency changers
H03G3/02—Manually-operated control
H03G3/04—Manually-operated control in untuned amplifiers
H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N5/00—Details of television systems
H04N5/14—Picture signal circuitry for video frequency region
H04N5/148—Video amplifiers
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N5/00—Details of television systems
H04N5/222—Studio circuitry; Studio devices; Studio equipment
H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay