Subscanning control method

Abstract

Abstract PURPOSE:To prevent an abnormal subscanning speed and to avoid deterioration in the quality of a picture or a recorded picture by implementing not stepwise but continuously acceleration and deceleration required for the subscanning in response to an idle capacity or an unrecorded picture information storage quantity of a picture memory. CONSTITUTION:A subscanning speed control section 6 uses a speed command signal (c) to control the subscanning speed of a picture read section 1 as follows according to the relation of the quantity between a value A of an up-down counter 4, i.e., an idle capacity of a picture memory 2 and predetermined values A1, A2, A21, A3 and A31: (1) in the case of a 1st region where A>=A3, the subscanning speed is continuously accelerated with an upper limit of a highest speed Vmax, and the speed is constant after it reaches the Vmax, (2) in the case of a 2nd region where A3>A>=A2, the subscanning speed is unchanged, i.e., constant, (3), in the case of a 3rd region, where A3>A>=A2, the subscanning speed is decelerated with a lower limit of Vmid ((Vmax), and when the speed reaches Vmid, the speed is made constant, and (4) in the case of a 4th region, where A1>A, the subscanning is stopped.

Inventors

• 👤 Akihiro Nagai
• 👤 章浩 永井
• 👤 Masanori Kamata
• 👤 鎌田　政則
• 👤 Yasuji Nakajima
• 👤 中島　保司
• 👤 Akihito Mochizuki
• 👤 昭仁 望月
• 👤 Hiroshi Saegusa
• 👤 洋 三枝

Bibliographic Details