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    • 3. 发明申请
    • OPTICAL APPARATUS
    • 光学装置
    • US20100302434A1
    • 2010-12-02
    • US12857377
    • 2010-08-16
    • Seiya Ohta
    • Seiya Ohta
    • H04N5/232
    • G03B13/36H04N5/23212
    • An optical apparatus is disclosed which achieves high focusing accuracy and favorable responsiveness in AF control. The apparatus includes a signal generator which extracts signals in a plurality of frequency bands from an output from an image-pickup part and generates focus signals from the extracted signals, and a controller which performs focus control such that the focus signal approaches the highest value. The controller uses a first focus signal and a second focus signal in the focus control. The second focus signal is a synthesis signal formed by synthesizing a focus signal in a relatively high or the highest frequency band of the plurality of frequency bands and a focus signal in another frequency band and contains a component of the focus signal in the relatively high or highest frequency band at a higher ratio as compared with the first focus signal.
    • 公开了一种在AF控制中实现高聚焦精度和良好响应性的光学装置。 该装置包括:信号发生器,其从图像拾取部分的输出中提取多个频带中的信号,并从所提取的信号中产生聚焦信号;以及控制器,其执行聚焦控制使得聚焦信号接近最高值。 控制器在聚焦控制中使用第一聚焦信号和第二聚焦信号。 第二聚焦信号是通过合成多个频带的相对高或最高频带中的聚焦信号和另一个频带中的聚焦信号而形成的合成信号,并且包含相对高的聚焦信号的分量或 与第一聚焦信号相比,具有较高比率的最高频带。
    • 9. 发明授权
    • Magnetic recording type of photographic apparatus capable of effecting motion-image recording and still-image recording
    • 能够进行运动图像记录和静止图像记录的摄影装置的磁记录类型
    • US06385393B1
    • 2002-05-07
    • US09471814
    • 1999-12-23
    • Seiya Ohta
    • Seiya Ohta
    • H04N5225
    • H04N5/23245H04N5/23212H04N5/2352H04N5/772H04N9/7921H04N9/804
    • A magnetic recording type of photographic apparatus comprises an iris for controlling the amount of light incident from a subject, an image sensor for converting a light signal obtained through the iris into an electrical signal, a converting circuit for converting a video signal supplied from the image sensor into a standard television signal, a motion-image signal processing circuit for applying signal processing to the standard television signal provided by the converting circuit and forming a motion-image signal, a still-image signal processing circuit for applying signal processing to the standard television signal provided by the converting circuit and forming a still-image signal, a recording circuit for recording the still-image signal supplied from the still-image signal processing circuit in a still-image recording area of a video track formed obliquely with respect to a longitudinal axis of a magnetic tape, and for recording the motion-image signal supplied from the motion-image signal processing circuit in a motion-image recording area of the video track, an integrating circuit for integrating a video luminance signal supplied from the converting circuit, an arithmetic circuit for calculating a difference between the video luminance signal from the integrating circuit and a reference value, an iris controlling circuit for controlling the iris in accordance with the difference calculated by the arithmetic circuit.
    • 一种磁记录类型的摄影装置包括用于控制从被摄体入射的光量的光圈,将通过虹膜获得的光信号转换为电信号的图像传感器,用于转换从图像提供的视频信号的转换电路 传感器转换为标准电视信号,用于对由转换电路提供的标准电视信号应用信号处理并形成运动图像信号的运动图像信号处理电路,用于将信号处理应用于标准的静止图像信号处理电路 由转换电路提供并形成静止图像信号的电视信号;记录电路,用于将从静止图像信号处理电路提供的静止图像信号记录在相对于 磁带的纵向轴线,并用于记录从运动i提供的运动图像信号 视频轨道的运动图像记录区域中的法师信号处理电路,用于对从转换电路提供的视频亮度信号进行积分的积分电路,用于计算来自积分电路的视频亮度信号与参考电平之间的差异的运算电路 值,用于根据由运算电路计算的差来控制光圈的光圈控制电路。