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1. 发明授权

US08203643B2 Automatic focusing device 有权
标题翻译：自动对焦装置
公开(公告)号：US08203643B2
公开(公告)日：2012-06-19
申请号：US12207623
申请日：2008-09-10
申请人： Motohiro Yuba , Kazuhiro Tsujino , Takeshi Fujiwara
发明人： Motohiro Yuba , Kazuhiro Tsujino , Takeshi Fujiwara
IPC分类号： G03B13/00 , H04N5/232
CPC分类号： G03B13/36 , H04N5/23212 , H04N5/3532
摘要： An automatic focusing device in accordance with the present invention comprises an image sensor being subjected to exposure performed in a rolling shutter system, a focusing system including a focus lens for focusing on the image sensor, an AF evaluation value calculating unit calculating an AF evaluation value based on an imaging signal obtained from the image sensor, and an AF control unit controlling an operation of the focusing system based on an AF evaluation value of a focusing area set in a part of the imaging picture by the image sensor, and the AF control unit makes the AF evaluation value of a focusing area of each imaging picture and a focus lens position at the time of exposure for the focusing area correspond to each other, and drives the focusing system during the period which overlaps with an exposure period while searching the focus lens position where the AF evaluation value becomes maximum.
摘要翻译：根据本发明的自动对焦装置包括在卷帘快门系统中进行曝光的图像传感器，包括用于聚焦在图像传感器上的聚焦透镜的聚焦系统，AF评估值计算单元，其计算AF评价值基于从图像传感器获得的成像信号，以及AF控制单元，其基于由图像传感器设置在摄像图像的一部分中的聚焦区域的AF评估值来控制聚焦系统的操作，并且AF控制单元使得各个成像图像的聚焦区域的AF评估值和聚焦区域的曝光时的对焦透镜位置彼此对应，并且在与曝光周期重叠的时段期间驱动聚焦系统，同时搜索 AF评估值变为最大的对焦透镜位置。

2. 发明申请

US20130016245A1 IMAGING APPARATUS 审中-公开
标题翻译：成像设备
公开(公告)号：US20130016245A1
公开(公告)日：2013-01-17
申请号：US13548874
申请日：2012-07-13
申请人： Motohiro Yuba
发明人： Motohiro Yuba
IPC分类号： H04N5/232 , H04N5/225
CPC分类号： H04N5/23212 , G03B13/36
摘要： An imaging apparatus includes an imager which acquires an image signal of a subject. A first filter processer performs a filer process on a luminance signal included in the image signal in a focus area. A second filter processor performs a filter process on the luminance signal included in the image signal in the focus area and to which a cutoff frequency different from the cutoff frequency of the first filter processor is set. A first determiner determines whether or not a point light source is included in the subject. A calculator calculates an evaluation value from the luminance signal included in the image signal in the focus area. A focuser performs focus control based on the evaluation value. When it is determined that the point light source is included in the subject, the calculator calculates the evaluation value based on outputs of the first and second filter processor.
摘要翻译：成像装置包括获取被摄体的图像信号的成像器。第一滤波处理器对焦点区域中的图像信号中包括的亮度信号执行滤波处理。第二滤波器处理器对聚焦区域中的图像信号中包括的亮度信号执行滤波处理，并且设置与第一滤波处理器的截止频率不同的截止频率。第一确定器确定点光源是否包括在被摄体中。计算器从聚焦区域中的图像信号中包括的亮度信号计算评估值。聚焦器根据评估值进行聚焦控制。当确定点光源被包括在被摄体中时，计算器基于第一和第二滤光器处理器的输出来计算评估值。

3. 发明授权

US08339505B2 Electronic camera 有权
标题翻译：电子相机
公开(公告)号：US08339505B2
公开(公告)日：2012-12-25
申请号：US12404589
申请日：2009-03-16
申请人： Motohiro Yuba
发明人： Motohiro Yuba
IPC分类号： G03B13/36
CPC分类号： G03B13/18
摘要： An electronic camera includes an imaging device. The imaging device has an imaging surface irradiated with an optical image of an object scene that undergoes a focus lens, and outputs an object scene image produced on the imaging surface. A CPU predicts a focus direction based on a focus position registered in a register when a shutter button is half-depressed. The CPU also changes a position of the focus lens by referencing a prediction result of the focus direction, and based on the object scene image outputted from the imaging device in parallel with this change process, adjusts the position of the focus lens to the focus position. The CPU further registers the adjusted position of the focus lens, as the focus position, into the register.
摘要翻译：电子照相机包括成像装置。成像装置具有用经受聚焦透镜的物体场景的光学图像照射的成像表面，并且输出在成像表面上产生的物体场景图像。当半按下快门按钮时，CPU基于登记在寄存器中的对焦位置来预测焦点方向。 CPU也通过参照聚焦方向的预测结果来改变聚焦透镜的位置，并且基于与该改变处理并行地从成像装置输出的对象场景图像，将聚焦透镜的位置调整到对焦位置。 CPU进一步将调焦位置作为对焦位置注册到寄存器中。

4. 发明申请

US20100182493A1 ELECTRONIC CAMERA 审中-公开
标题翻译：电子相机
公开(公告)号：US20100182493A1
公开(公告)日：2010-07-22
申请号：US12650043
申请日：2009-12-30
申请人： Motohiro Yuba , Naoki Yonetani
发明人： Motohiro Yuba , Naoki Yonetani
IPC分类号： H04N5/232
CPC分类号： H04N5/23212
摘要： An electronic camera includes an imaging device. The imaging device repeatedly outputs an object scene image produced on an imaging surface capturing an object scene through a focus lens. A position of the focus lens is repeatedly changed by a moving amount Wrough under the control of a CPU. Moreover, a distance from the focus lens to the imaging surface is repeatedly changed by a moving amount Wfine, smaller than the moving amount Wrough, under the control of the CPU. The CPU adjusts the position of the focus lens to a position corresponding to a focal point, based on the object scene image outputted from the imaging device, in parallel with such a rough adjusting process and/or a fine adjusting process. However, the CPU restricts the rough adjusting process when the contrast of an object belonging to the object scene falls below a reference.
摘要翻译：电子照相机包括成像装置。成像装置通过聚焦透镜重复地输出在拍摄对象场景的成像面上产生的物体场景图像。在CPU的控制下，聚焦透镜的位置被重复地改变移动量Wrough。此外，在CPU的控制下，从聚焦透镜到成像面的距离重复地改变移动量Wfine，小于移动量Wrough。基于从成像装置输出的对象场景图像，CPU与这样的粗略调整处理和/或微调处理并行地调整聚焦透镜的位置到与焦点对应的位置。然而，当属于对象场景的对象的对比度低于参考值时，CPU限制粗调调整处理。

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