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    • 27. 发明授权
    • Battery voltage checking device for cameras
    • 相机电池电压检测装置
    • US4522480A
    • 1985-06-11
    • US599210
    • 1984-04-12
    • Takashi KawabataNobuhiko ShinodaShinji Sakai
    • Takashi KawabataNobuhiko ShinodaShinji Sakai
    • H02M3/28G03B7/26G03B43/00G03B17/18
    • G03B7/26
    • A battery checking device for cameras of the type having a booster circuit the output of which is fed as electrical power to a load is disclosed. In the case of the camera of the type described, when the battery voltage is checked at the output of the booster circuit, an accurate checking operation cannot be carried out. The present invention, therefore allows the voltage at the input of the booster circuit to be checked. Since another problem is that the booster circuit, after having been actuated, takes a predetermined time before its operation is stabilized, and the value of voltage as sensed during this time does not provide an accurate representation, the present invention provides that checking of that input voltage begins after the elapse of a predetermined time from the actuation of the booster circuit when the operation of the booster circuit becomes stable. Accordingly, it is made possible to achieve always an accurate and reliable battery checking operation.
    • 公开了一种具有升压电路类型的照相机的电池检查装置,该升压电路的输出作为电力被馈送到负载。 在所述类型的照相机的情况下,当在升压电路的输出端检查电池电压时,不能进行精确的检查操作。 因此,本发明允许检查升压电路输入端的电压。 由于另一个问题是升压电路在被致动之后在其操作稳定之前需要预定的时间,并且在此期间感测到的电压值不能提供准确的表示,本发明提供了对该输入的检查 当升压电路的运行变得稳定时,从升压电路的启动经过预定时间后开始电压。 因此,可以实现总是精确可靠的电池检查操作。
    • 30. 发明授权
    • Image sharpness detecting system
    • 图像清晰度检测系统
    • US4377742A
    • 1983-03-22
    • US151703
    • 1980-05-20
    • Takashi KawabataKazuya HosoeNobuhiko ShinodaShinji SakaiTakao Kinoshita
    • Takashi KawabataKazuya HosoeNobuhiko ShinodaShinji SakaiTakao Kinoshita
    • G02B7/28G03B3/00G01J1/36
    • G02B7/28G03B3/00
    • Disclosed is an image sharpness detecting system in which an image formed by an image forming optical system is received by an array of a plurality of optical-electronic transducer elements, and an illumination difference in each individual minute compartment of the above-described image is detected on the basis of the concurrently obtained output signal from a corresponding one of the optical-electronic transducer elements, while all the illumination differences are summed up over the entire area of a sensing region of the above-described image, whereby is obtained a signal representing the degree of sharpness of the image on the above-described array of optical-electronic transducer elements. In this system, the signal representative of the illumination difference in each individual minute compartment of the above-described image is at least non-linearly transformed by utilizing the non-linear characteristics for output versus input of a semiconductor element such as a transistor, and the signal representative of the degree of sharpness of the above-described image is obtained on the basis of the non-linearly transformed signal.
    • 公开了一种图像清晰度检测系统,其中通过多个光电子换能器元件的阵列接收由图像形成光学系统形成的图像,并且检测到上述图像的每个单独的分隔室中的照明差异 基于来自相应的一个光电换能器元件的同时获得的输出信号,同时在上述图像的感测区域的整个区域上将所有的照明差值相加,从而获得表示 上述光电换能器阵列阵列上的图像的清晰度。 在该系统中,通过利用诸如晶体管的半导体元件的输出与输入的非线性特性,表示上述图像的每个单独分隔室中的照明差异的信号至少被非线性变换,以及 基于非线性变换信号获得表示上述图像的清晰度的信号。