| 摘要 |
<p>There is provided a color television camera of the type employing a photoconductive type pickup tube having a signal electrode consisting of a plurality of transparent electrode segments, a striped color filter and a photoconductive surface, wherein a color separated image is formed on the photoconductive surface, and at least one of the electrode segments constituting the signal electrode consists of a plurality of electrode elements each having a width greater than the recurrence cycle of the filter-element sets of the stripped color filter with each of the electrode elements being formed with a plurality of beam current interrupting portions arranged at the intervals smaller than the recurrence cycle of the filter-element sets of the striped color filter. By virtue of this arrangement, the frequency of the spurious signals generated at the dividing slot separating the signal electrode into the plurality of the electrode segments and the beam current interrupting portions in response to the beam scanning falls outside the frequency bands of the luminance signal and the frequency modulated chrominance signal, thus eliminating the detrimental effects of the spurious signals and reducing the stray capacitance existing between the plurality of the electrode segments. The modulated chrominance signal is demodulated by means of a reference signal derived by multiplying integral times the frequency of an index signal produced from the output of at least one of the electrode segments for providing the respective color signals.</p> |
