| 摘要 |
During the recording, a correction signal (8) obtained by double differentiation (6, 7) is added to the luminance signal (Y). According to the invention, an amplitude preequaliser (5), which raises small signal amplitudes compared with large signal amplitudes is located in front of the differentiating stages (6, 7). This prevents voltage steps which are too large from occurring in the corrected luminance signal (Y). <IMAGE>
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