| 摘要 |
<p>PURPOSE:To prevent the procuction of reactive power and to improve the quality of recording by controlling the applied power corresponding to the image signal. CONSTITUTION:X bits are picked out from both ends (change points of white/black signals) of each black signal component Y1, Y2, Y3, in which image signals (a) continue, and are energized as image signals (b-1) at the time T1 in the energizing time Ta. Next, X bits are picked out from both ends of each black signal component Z21, Z31, except ones energized as the image signal (b-1), and are energized as image signals (b-2) at the time T2. After this, the operation is performed in the same way until the black signal component is made none. In this way, the image signal (a) is energized as five signals of (b-1)-(b-5) at T1-T5, and respective feeding times are controlled so that Tb-1>Tb-2>Tb-3>Tb-4>Tb-5. As a result, the applied power to the continuous black data can be reduced as it approaches to the central part.</p> |
