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    • 56. 发明申请
    • FOCUSING APPARATUS
    • 聚焦装置
    • US20120062788A1
    • 2012-03-15
    • US13223654
    • 2011-09-01
    • Kazuhiko SugimotoJong-hoon Won
    • Kazuhiko SugimotoJong-hoon Won
    • H04N5/232
    • H04N5/23212G03B17/14
    • A focusing apparatus including a focus lens; a focus lens driving unit that drives the focus lens; an imaging device configured to generate an image signal; a focus evaluation value calculating unit configured to receive an image signal from the imaging device and to calculate a focus evaluation value of a captured image; a difference calculating unit configured to calculate a difference between a current focus evaluation value and a previous focus evaluation value; a first determining unit configured to compare the difference to each of a plurality of threshold values different from each other; a counter configured to count results of comparing the difference to each of the plurality of threshold values and to generate count information; and a second determining unit configured to compare the count information to threshold count information and to determine a target drive direction in which the focus lens is to be driven.
    • 一种聚焦装置,包括聚焦透镜; 驱动聚焦透镜的聚焦透镜驱动单元; 被配置为生成图像信号的成像装置; 焦点评估值计算单元,被配置为从所述成像装置接收图像信号,并计算拍摄图像的聚焦评估值; 差分计算单元,被配置为计算当前焦点评估值和先前焦点评估值之间的差; 第一确定单元,被配置为将所述差异与彼此不同的多个阈值中的每一个进行比较; 计数器,被配置为对与所述多个阈值中的每个阈值进行比较的结果进行计数,并生成计数信息; 以及第二确定单元,被配置为将计数信息与阈值计数信息进行比较,并确定要驱动聚焦透镜的目标驱动方向。
    • 59. 发明申请
    • METHOD AND APPARATUS FOR CONTROLLING FOCUS LENS
    • 控制聚焦镜头的方法和装置
    • US20100026879A1
    • 2010-02-04
    • US12468187
    • 2009-05-19
    • Sung-shik KohKazuhiko Sugimoto
    • Sung-shik KohKazuhiko Sugimoto
    • H04N5/232
    • G03B13/32G02B7/28
    • Provided are a method of controlling a focus lens to be moved to a target location by generating a normalized focus graph by use of relative values of a plurality of focus values obtained by using a plurality of filters each having different cut-off frequencies, and predicting a target position of the focus lens according to the normalized focus graph, an apparatus operating by using the method, and a recording medium for recording the method. According to the present invention, in terms of performing an auto-focusing function, by optimizing the motion line of the focus lens, wasteful power consumption can be prevented and a scanning time of the focus lens can be shortened.
    • 提供了一种通过使用通过使用具有不同截止频率的多个滤波器获得的多个焦点值的相对值生成归一化焦点图来控制要移动到目标位置的聚焦透镜的方法,并且预测 根据归一化聚焦图的聚焦透镜的目标位置,使用该方法操作的设备以及用于记录该方法的记录介质。 根据本发明,在进行自动聚焦功能方面,通过优化聚焦透镜的运动线,可以防止浪费的功率消耗,并且能够缩短聚焦透镜的扫描时间。