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    • 42. 发明公开
    • IMPEDANCE MATCHING DEVICE AND ENDOSCOPE PROVIDED WITH SAME
    • 阻抗匹配装置和内窥镜提供相同
    • EP2552106A1
    • 2013-01-30
    • EP11816374.0
    • 2011-08-05
    • Olympus Medical Systems Corp.
    • HASHIMOTO HidenoriTANAKA YasuhiroISHIHARA Hideaki
    • H04N5/378A61B1/04H03H7/40H04N5/225
    • A61B1/00009A61B1/00018H03H7/40H04N5/378H04N2005/2255
    • An impedance matching apparatus includes: a cable that transmits a rectangular wave outputted from a solid image pickup device; a correlated double sampling circuit that performs correlated double sampling by fixing a timing of a feedthrough sampling pulse to a timing at which the rectangular wave transmitted by the cable indicates a high value, and with the fixed timing of the feedthrough sampling pulse as a basis, sampling the rectangular wave with a timing of a signal clamp pulse being changed to scan the rectangular wave; a variable resistance provided at a tail end side of the cable and having a variable resistance value; and a resistance value varying unit that, as a result of the scanning with a resistance value of the variable resistance being changed, based on a signal outputted from the correlated double sampling circuit, changes a resistance value of the variable resistance so that a resistance value of the variable resistance matches a characteristic impedance of the cable.
    • 一种阻抗匹配装置包括:传输从固体图像拾取装置输出的矩形波的电缆; 相关双采样电路,其通过将馈通采样脉冲的定时固定为由电缆发送的矩形波表示高值的定时,并以该馈通采样脉冲的固定定时为基础执行相关双采样, 以改变信号钳位脉冲的定时对矩形波进行采样以扫描矩形波; 设置在所述电缆的尾端侧并具有可变电阻值的可变电阻; 以及电阻值改变单元,所述电阻值改变单元基于从所述相关双采样电路输出的信号来改变所述可变电阻的电阻值的扫描结果,改变所述可变电阻的电阻值,使得电阻值 可变电阻的特性阻抗与电缆的特性阻抗匹配。
    • 44. 发明公开
    • Image pickup system and endoscope system
    • Bildaufnahmesystem和Endoskopsystem
    • EP2096865A2
    • 2009-09-02
    • EP09002519.8
    • 2009-02-23
    • FUJIFILM Corporation
    • Nakamura, Kazuhiko
    • H04N5/335H03L7/08H04L7/00H04L25/49
    • H04N5/335A61B1/00018A61B1/042H03L7/08H04L7/033H04L25/4908
    • An image pickup system includes an image pickup unit (42) having a solid-state image pickup device (44), for example, CMOS. A processor (11) controls the image pickup device and receives an image signal (SDT) from the image pickup unit with a signal line (49) in serial transmission. The processor includes a clock and data recovery circuit (79) for deriving a clock signal (RCLK) from the image signal input by the signal line, and for producing a data signal (RSDT) synchronized with the clock signal in phase synchronization. There is a signal processing unit (81-83) for signal processing according to the data signal and the clock signal produced by the clock and data recovery circuit. Preferably, the image pickup unit includes an A/D converter for digitally converting the image signal from the image pickup device into parallel data of bits of a predetermined number.
    • 图像拾取系统包括具有例如CMOS的固态图像拾取装置(44)的图像拾取单元(42)。 处理器(11)控制图像拾取装置,并且通过串行传输中的信号线(49)从图像拾取单元接收图像信号(SDT)。 该处理器包括一个时钟和数据恢复电路(79),用于从由信号线输入的图像信号中导出时钟信号(RCLK),并产生与时钟信号同步的数据信号(RSDT)。 根据数据信号和由时钟和数据恢复电路产生的时钟信号,存在用于信号处理的信号处理单元(81-83)。 优选地,图像拾取单元包括用于将来自图像拾取装置的图像信号数字转换为预定数量的位的并行数据的A / D转换器。