| 摘要 |
A color television camera utilizes a vidicon tube having a filter in the form of triads of stripe-like filter elements for the primary colors red, blue and green, sets of electrodes arranged in pairs for each filter element triad and being electrically separated from the photoconductive layer at the side of the latter facing toward the electron gun, and an output or signal electrode apart from the sets of electrodes. An alternating voltage is applied to the sets of electrodes to provide, on the photoconductive layer, a predetermined potential pattern representing an index signal which is overlapped with the color component images of the object to be reproduced provided through the filter. A composite signal made up of an index signal and a color video signal is obtained at the output electrode. Upon the separation of the index signal and the color video signal from the composite signal, the index signal is used to derive the individual color signals from the color video signal.
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