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    • 2. 发明授权
    • Method, system, and computer readable medium for controlling a digital camera to avoid blurring of a photograph
    • 用于控制数码相机以避免模糊照片的方法,系统和计算机可读介质
    • US06603508B1
    • 2003-08-05
    • US09188327
    • 1998-11-09
    • Daisuke Hata
    • Daisuke Hata
    • H04N5235
    • H04N5/2327H04N5/23248H04N5/2352H04N5/243
    • A method, system and computer readable medium for controlling a digital camera including setting a shutter speed; receiving a light flux from an object to be photographed to form an image thereof at the set shutter speed; converting the received light flux into an image signal; amplifying the image signal with a variable gain; judging whether or not the shutter speed is set slower than a predetermined blur avoiding speed; and increasing the variable gain to a predetermined value when the shutter speed is set slower than the predetermined blur avoiding speed. Another embodiment includes a method, system and computer readable medium for controlling a digital camera including setting a shutter speed; receiving a light flux from an object to be photographed to form an image thereof at the set shutter speed; converting the received light flux into an image signal; amplifying the image signal with a variable gain; judging whether or not the shutter speed is set slower than a predetermined blur avoiding speed; selectively setting a photographing mode to one of: a blur avoiding photographing mode in which the variable gain is increased to a predetermined value when the shutter speed is set slower than the predetermined blur avoiding speed, and a normal photographing mode in which the variable gain is not increased even when the shutter speed is set slower than the predetermined blur avoiding speed; and increasing the variable gain to a predetermined value when the blur avoiding photographing mode is set and when the shutter speed is set slower than the predetermined blur avoiding speed.
    • 一种用于控制数字照相机的方法,系统和计算机可读介质,包括设置快门速度; 从被拍摄物体接收光束,以设定的快门速度形成图像; 将所接收的光束转换为图像信号; 用可变增益放大图像信号; 判断快门速度是否比预定的模糊避免速度慢; 并且当快门速度被设定得比预定的模糊避免速度慢时,将可变增益增加到预定值。 另一个实施例包括用于控制数字照相机的方法,系统和计算机可读介质,包括设置快门速度; 从被拍摄物体接收光束,以设定的快门速度形成图像; 将所接收的光束转换为图像信号; 用可变增益放大图像信号; 判断快门速度是否比预定的模糊避免速度慢; 选择性地将拍摄模式设置为以下步骤之一:当快门速度被设定为比预定的模糊避免速度慢时,可变增益增加到预定值的模糊避免拍摄模式,以及可变增益为 即使当快门速度被设定为比预定的模糊避免速度慢时也不会增加; 以及当设置了模糊避免拍摄模式时以及当快门速度被设置为比预定的模糊避免速度慢时,将可变增益增加到预定值。
    • 4. 发明授权
    • Focusing device for driving focusing lens group according to a position
of zoom lens group
    • 根据变焦镜头组的位置进行聚焦镜头组的聚焦装置
    • US5231441A
    • 1993-07-27
    • US914467
    • 1992-07-17
    • Daisuke Hata
    • Daisuke Hata
    • G02B7/10
    • G02B7/102
    • A lens controller comprises a focusing device for driving a focusing lens group; a zooming device for driving a zoom lens group; a focusing position detector for detecting the position of the focusing lens group on an optical axis; a zoom position detector for detecting the position of the zoom lens group on the optical axis corresponding to a focal distance thereof; a calculating device for respectively receiving outputs of the zoom and focusing position detectors and calculating a correction amount with respect to a shift in position of a formed image after the zoom lens group is driven by the zooming device; a control device for receiving the correction amount and controlling the operation of the focusing device such that the focusing lens group is moved to a focusing position with respect to the focal distance thereof; a device for judging whether or not the focusing lens group is located in inhibit regions on infinite and proximate sides respectively formed within a predetermined distance in a direction from an infinite position to a proximate position and in a direction from the proximate position to the infinite position; and a device for receiving an output of the judging device and inhibiting the focusing lens group from being moved in the directions toward the infinite and proximate positions when the focusing lens group is respectively located in the inhibit regions on the infinite and proximate sides.
    • 镜头控制器包括用于驱动聚焦透镜组的聚焦装置; 用于驱动变焦透镜组的变焦装置; 聚焦位置检测器,用于检测聚焦透镜组在光轴上的位置; 变焦位置检测器,用于检测与其焦距对应的光轴上的变焦镜头组的位置; 计算装置,用于分别接收变焦和聚焦位置检测器的输出,并且计算相对于由变焦装置驱动变焦透镜组之后的成像图像的位置偏移量的校正量; 控制装置,用于接收校正量并控制聚焦装置的操作,使得聚焦透镜组相对于其焦距移动到聚焦位置; 用于判断聚焦透镜组是否位于在从无限位置到邻近位置的方向上以及从近处位置到无限位置的方向上分别形成在预定距离内的无限和近侧上的禁止区域中的装置 ; 以及用于当聚焦透镜组分别位于无限和近侧上的禁止区域中时,接收判断装置的输出并阻止聚焦透镜组在朝向无限和邻近位置的方向上移动的装置。
    • 5. 发明授权
    • Lens controller
    • 镜头控制器
    • US5196879A
    • 1993-03-23
    • US710254
    • 1991-06-04
    • Daisuke Hata
    • Daisuke Hata
    • G02B7/10
    • G02B7/102
    • A lens controller comprises a focusing device for driving a focusing lens group; a zooming device for driving a zoom lens group; a focusing position detector for detecting the position of the focusing lens group on an optical axis; a zoom position detector for detecting the position of the zoom lens group on the optical axis corresponding to a focal distance thereof; a calculating device for respectively receiving outputs of the zoom and focusing position detectors and calculating a correction amount with respect to a shift in position of a formed image after the zoom lens group is driven by the zooming device; a control device for receiving the correction amount and controlling the operation of the focusing device such that the focusing lens group is moved to a focusing position with respect to the focal distance thereof; a device for judging whether or not the focusing lens group is located in inhibit regions on infinite and proximate sides respectively formed within a predetermined distance in a direction from an infinite position to a proximate position and in a direction from the proximate position to the infinite position; and a device for receiving an output of the judging device and inhibiting the focusing lens group from being moved in the directions toward the infinite and proximate positions when the focusing lens group is respectively located in the inhibit regions on the infinite and proximate sides.
    • 镜头控制器包括用于驱动聚焦透镜组的聚焦装置; 用于驱动变焦透镜组的变焦装置; 聚焦位置检测器,用于检测聚焦透镜组在光轴上的位置; 变焦位置检测器,用于检测与其焦距对应的光轴上的变焦镜头组的位置; 计算装置,用于分别接收变焦和聚焦位置检测器的输出,并且计算相对于由变焦装置驱动变焦透镜组之后的成像图像的位置偏移量的校正量; 控制装置,用于接收校正量并控制聚焦装置的操作,使得聚焦透镜组相对于其焦距移动到聚焦位置; 用于判断聚焦透镜组是否位于在从无限位置到邻近位置的方向上以及从近处位置到无限位置的方向上分别形成在预定距离内的无限和近侧上的禁止区域中的装置 ; 以及用于当聚焦透镜组分别位于无限和近侧上的禁止区域中时,接收判断装置的输出并阻止聚焦透镜组在朝向无限和邻近位置的方向上移动的装置。
    • 7. 发明授权
    • Automatic focusing control system
    • 自动对焦控制系统
    • US4777505A
    • 1988-10-11
    • US928164
    • 1986-11-07
    • Daisuke HataSusumu IguchiYoshimi OhnoTakao YamaguchiTakayuki HataseKazumasa Aoki
    • Daisuke HataSusumu IguchiYoshimi OhnoTakao YamaguchiTakayuki HataseKazumasa Aoki
    • G02B7/09G02B7/36G03B13/36G03B3/00
    • G02B7/36
    • An automatic focusing control system includes a focus detecting light detector, a rangefinder, a lens driver, a manual range setting unit, a mode setting unit, and a control unit. When a manual mode is selected by the mode setting unit, the control unit applies a lens driving signal from the manual range setting unit to the lens driver unit to drive a lens. When an automatic mode is selected by the mode setting unit, the control unit operates the lens driver unit to drive the lens based on a measured distance at the time distance measurement is possible, applies the lens driving signal from the manual range setting unit to the lens driver unit at the time distance measurement is impossible, and operates the lens driver unit to drive the lens based on the measured distance at the time distance measurement becomes possible from a condition in which distance measurement is impossible.
    • 自动对焦控制系统包括焦点检测光检测器,测距仪,透镜驱动器,手动量程设置单元,模式设置单元和控制单元。 当通过模式设置单元选择手动模式时,控制单元将来自手动范围设置单元的镜头驱动信号施加到镜头驱动器单元以驱动镜头。 当通过模式设置单元选择自动模式时,控制单元操作透镜驱动单元以在距离测量可能时基于测量距离来驱动透镜,将来自手动范围设置单元的透镜驱动信号应用于 透镜驱动器单元在距离测量不可能的情况下操作,并且在距离测量不可能的条件下,基于测量距离来操作透镜驱动单元以驱动透镜。
    • 10. 发明授权
    • Lens controller includes a zooming optical system and a zooming speed
control device
    • 镜头控制器包括变焦光学系统和变焦速度控制装置
    • US5028773A
    • 1991-07-02
    • US397193
    • 1989-08-23
    • Daisuke Hata
    • Daisuke Hata
    • G02B7/08G02B7/10G02B7/105G02B7/28G03B5/00G03B13/36
    • G02B7/102
    • A lens controller comprises a varifocal lens changed by a focusing position with respect to a shifting amount of an image forming position; a focusing drive unit for driving a focusing lens group constituting a zooming optical system; a zooming drive unit for driving a zooming lens group constituting the zooming optical system; a detector for detecting the position of the focusing lens group between proximate and infinite positions; a detector for detecting the position of the zooming lens group on the optical axis thereof corresponding to the focal distance of the entire zooming optical system; a focusing correction control device for calculating a correcting amount of the shift of the image forming position with respect to the focal distance when the zooming operation is performed to change the focal distance of the entire zooming optical system by the zooming drive unit, the focusing correction control device controlling the focusing drive unit so as to move the focusing lens group to the focusing position in accordance with the correcting amount; and a zooming speed control device for receiving an output of the focusing lens group position detector and changing the zooming speed in a predetermined relation based on the change in output of the focusing lens group position detector. The other constructional devices may be used to automatically correct the shift of the image forming position.
    • 透镜控制器包括相对于图像形成位置的移动量由聚焦位置改变的变焦透镜; 聚焦驱动单元,用于驱动构成变焦光学系统的聚焦透镜组; 变焦驱动单元,用于驱动构成变焦光学系统的变焦透镜组; 检测器,用于检测聚焦透镜组在接近和无限位置之间的位置; 检测器,用于检测与整个变焦光学系统的焦距对应的在其光轴上的变焦透镜组的位置; 聚焦校正控制装置,用于计算当执行变焦操作时相对于焦距的图像形成位置的偏移量的校正量,以通过变焦驱动单元改变整个变焦光学系统的焦距,聚焦校正 控制装置,控制聚焦驱动单元,以便根据校正量将聚焦透镜组移动到聚焦位置; 以及变焦速度控制装置,用于接收聚焦透镜组位置检测器的输出,并且基于聚焦透镜组位置检测器的输出的变化以预定关系改变变焦速度。 其他结构装置可用于自动校正图像形成位置的偏移。