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    • 3. 发明公开
    • Optical scanning unit and method thereof
    • Optische Abtasteinheit und Verfahrendafür
    • EP1874037A2
    • 2008-01-02
    • EP07101049.0
    • 2007-01-23
    • Samsung Electronics Co., Ltd.
    • Kim, Se-tae
    • H04N5/08
    • H04N1/053H04N1/1135H04N2201/02439H04N2201/0468H04N2201/0471H04N2201/04732H04N2201/04744H04N2201/04755H04N2201/04794
    • An optical scanning device and method of optical scanning are provided. The optical scanning unit includes a resonant mirror controller (220) scanning light emitted from a laser diode on a photoconductive drum, a first light-receiving sensor (200) which receives the light scanned by the resonant mirror controller (220), and outputs a first horizontal synchronization signal which determines a start position of optical scanning according to the received light, and a video signal controller (240), responding to the first horizontal synchronization signal output from the first light-receiving sensor (200), controls the laser diode so that light corresponding to a video signal is emitted. In the optical scanning unit, a video signal controller (240) can receive a plurality of horizontal synchronization signals (SOS; Start of Scan) through only one input pin irrespective of the number of light-receiving sensors which generate horizontal synchronization signals (SOS; Start Of Scan), which correspond to a start position of optical scanning.
    • 提供了一种光学扫描装置和光学扫描方法。 光扫描单元包括:对从感光鼓上的激光二极管发射的光进行扫描的共振反射镜控制器;接收由谐振反射镜控制器(220)扫描的光的第一光接收传感器(200),并输出 第一水平同步信号,其根据接收到的光确定光学扫描的开始位置,并且响应于从第一光接收传感器(200)输出的第一水平同步信号的视频信号控制器(240)控制激光二极管 使得对应于视频信号的光被发射。 在光学扫描单元中,视频信号控制器(240)可以通过仅一个输入引脚接收多个水平同步信号(SOS;起始扫描),而不考虑产生水平同步信号的光接收传感器的数量(SOS; 开始扫描),其对应于光学扫描的开始位置。