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    • 6. 发明授权
    • Automatic focus adjusting device
    • 自动调焦装置
    • US06879343B2
    • 2005-04-12
    • US09810380
    • 2001-03-16
    • Tatsuya YamazakiTaeko Tanaka
    • Tatsuya YamazakiTaeko Tanaka
    • H04N5/232H04N5/217
    • H04N5/23212
    • An automatic focusing device includes an extracting circuit which extracts a focus signal corresponding to a degree of focus from a picked-up image signal, a focusing lens and a direction deciding circuit which decides the direction of driving the focusing lens on the basis of the output of the extraction circuit when the state of focus deviates from an in-focus state. The extracting circuit is arranged to simultaneously extract a plurality of focus signals having different frequency components from each other. The direction deciding circuit is arranged to perform computing operations on the focus signals separately from each other with respect to the focusing lens driving direction and to decide the focusing lens driving direction when the results of the computing operations come to coincide with each other.
    • 一种自动聚焦装置,包括一个提取电路,从提取的图像信号中提取与焦度对应的聚焦信号,聚焦透镜和方向判定电路,其基于输出来决定驱动聚焦透镜的方向 当聚焦状态偏离聚焦状态时,提取电路的位置。 提取电路被配置为同时提取具有彼此具有不同频率分量的多个聚焦信号。 方向决定电路被配置为相对于聚焦透镜驱动方向彼此分离地进行聚焦信号的计算操作,并且当计算操作的结果相互一致时决定聚焦透镜驱动方向。
    • 7. 发明授权
    • Automatic focusing device capable of detecting panning
    • 自动聚焦装置能够检测平移
    • US5798793A
    • 1998-08-25
    • US863376
    • 1997-05-27
    • Taeko Tanaka
    • Taeko Tanaka
    • G02B7/36G02B7/28H04N5/232G03B13/00H04N5/238
    • G02B7/28H04N5/23212
    • An automatic focusing device includes an image pickup device for outputting an image signal by performing photoelectric conversion of an image of an object, a band-pass filter for extracting a sharpness signal corresponding to the sharpness from among the image signal, a diaphragm for controlling the amount of light incident upon the image pickup device, and a control circuit for controlling prohibition of the drive of a focusing lens based on a change in the sharpness signal output from the band-pass filter and a change in the state of the diaphragm. It is thereby possible to exactly detect an operation, such as panning or the like, and to prevent the stop of the focusing lens at a defocused position caused by an erroneous operation by prohibiting the drive of the focusing lens when panning has been detected.
    • 一种自动对焦装置,包括:通过对物体的图像进行光电转换来输出图像信号的图像拾取装置,用于从图像信号中提取与锐度相对应的清晰度信号的带通滤波器, 入射到图像拾取装置的光量,以及控制电路,用于根据从带通滤波器输出的清晰度信号的变化和光阑状态的变化来控制对聚焦透镜的驱动的禁止。 因此,可以精确地检测诸如摇摄等的操作,并且防止在由检测到淘洗时通过禁止聚焦透镜的驱动而由错误操作引起的聚焦透镜停止在散焦位置。