| 摘要 |
Successive scenes or fields of color picture information are recorded by exposing successive frames or portions of an elongated strip of radiant energy-sensitive record medium, for example, monochrome photographic film, to radiant energy in the form of light or an electron beam, and modulating the radiant energy for recording, in each of the frames or record medium portions information representing a composite signal which contains luminance and chrominance signals and an index signal having the same frequency as the color carrier for the chrominance signal and with the phase of either the index signal or the chrominance signal carrier, but not both, being reversed for successive color picture fields, that is in successive frames. In reproducing the recorded color picture information, the information recorded in the successive frames or record medium portions is detected to simultaneously reproduce first and second composite signals corresponding to two successive color picture fields, the chrominance and index signals are separated together from the first and second reproduced composite signals and added and subtracted to provide the chrominance signal and the index signal separate from each other, and the separated index signal is then employed to demodulate the chrominance signal and thereby provide color difference signals which, with the luminance signal separated from one of the reproduced composite signals, define a respective color picture. |
