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    • 10. 发明公开
    • Image reader
    • Bildleser
    • EP1936609A2
    • 2008-06-25
    • EP07024654.1
    • 2007-12-19
    • YAMAHA CORPORATION
    • Mushikabe, KasuyaItoga, Hisanori
    • G11B20060101
    • G11B7/0037G11B7/005
    • An LPF performs low-pass filtering for a light reception signal responsive to return light received by an optical pickup. A comparator makes a comparison between the level of the signal output from the LPF and a predetermined threshold value and outputs a high or low pulse signal MIR. A system control section determines the pulse signal MIR for each predetermined dot region. If the pulse signal MIR output from the comparator is.high, the system control section writes "1" into buffer memory; if the pulse signal MIR is low, the system control section writes "0" into the buffer memory. The pixel string data recorded in the buffer memory is transferred to a host and an image responsive to pixel string data is displayed on a display.
    • 响应于由光学拾取器接收的返回光,LPF对光接收信号执行低通滤波。 比较器比较从LPF输出的信号电平与预定阈值之间的比较,并输出高或低脉冲信号MIR。 系统控制部分确定每个预定点区域的脉冲信号MIR。 如果从比较器输出的脉冲信号MIR较高,则系统控制部分将“1”写入缓冲存储器; 如果脉冲信号MIR为低,则系统控制部分将“0”写入缓冲存储器。 记录在缓冲存储器中的像素串数据被传送到主机,并且响应于像素串数据的图像被显示在显示器上。