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公开(公告)号：US6084627A
公开(公告)日：2000-07-04
申请号：US838707
申请日：1997-04-09
CPC分类号： H04N1/1275 , H04N1/047 , H04N1/128 , H04N1/4015 , H04N1/1017 , H04N2201/0426 , H04N2201/0471 , H04N2201/04765
摘要： An apparatus and method for controlling an image recording device. The apparatus includes an acousto-optic deflector that deflects a beam of light so as to write a sub-scan comprising a predetermined number of picture elements. The image recording device is arranged to write a plurality of sub-scans side by side in a substantially contiguous manner. The apparatus also includes a component that commences sub-scans, a start of sub-scan detector that detects when the light beam is directed towards a start of sub-scan position, and an end of sub-scan detector that detects when the beam of light is directed towards an end of sub-scan position. A timing logic controller generates a start reference signal representing a desired position for the start of a sub-scan. A controller compares an output of the start of sub-scan detector with respect to the start reference signal. The controller also adjusts a frequency range of a chirp applied to the acousto-optic deflector while keeping a start time of the chirp constant so as to cause an arrival time of the light beam at the start of sub-scan detector to coincide with the start reference signal. A picture element rate controller adjusts a rate at which picture elements are written such that a final one of the picture elements is written a predetermined period before the light beam is directed towards the end of sub-scan position.
摘要翻译： 一种用于控制图像记录装置的装置和方法。 该装置包括使光束偏转的声光偏转器，以便写入包括预定数量的像素的子扫描。 图像记录装置被布置成以基本上连续的方式并排地写入多个子扫描。 该装置还包括开始子扫描的部件，检测光束何时被引导朝向副扫描位置的开始的副扫描检测器的开始以及检测到 光指向副扫描位置的一端。 定时逻辑控制器产生表示用于子扫描开始的期望位置的开始参考信号。 控制器将副扫描检测器的开始的输出与起始参考信号进行比较。 控制器还调整施加到声光偏转器的啁啾的频率范围，同时保持啁啾的开始时间恒定，以使得在亚扫描检测器的开始处的光束的到达时间与起始 参考信号。 图像元素速率控制器调整写入图像元素的速率，使得在光束指向副扫描位置的结束之前，预定的周期内写入最后的一个图像元素。
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