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26 条记录 (耗时 0.026 秒)

    Exposure control circuit
    2.
    发明授权
    Exposure control circuit 失效
    曝光控制电路

    公开(公告)号：US4057809A

    公开(公告)日：1977-11-08

    申请号：US666458

    申请日：1976-03-12

    申请人： Soichi Nakamoto ,  Tadashi Ito ,  Fumio Ito ,  Nobuhiko Shinoda

    发明人： Soichi Nakamoto ,  Tadashi Ito ,  Fumio Ito ,  Nobuhiko Shinoda

    IPC分类号： G01J1/46 ,  G03B7/093

    CPC分类号： G03B7/093

    摘要： This invention relates to photographic cameras, and more particularly to an exposure control circuit of the type in which an analog output representative of the object brightness level is converted to a digital signal which is factored into an exposure value, and the period of actuation of the camera shutter is controlled in accordance with this exposure value. Still more particularly, it relates to an improvement over this conventional type exposure control with respect to the A-D conversion. The prior art converts a voltage representative of the object brightness to a digital form by the use of an A-D converter such as of the follow comparison type which is characterized by the lack of integrating aspect in converting the input voltage to the corresponding digital signal. Therefore, when the illumination for the object being photographed is caused to flicker in a period of time shorter than the effective exposure time interval, an alternating current component is introduced into the input voltage of the converter. Accordingly, it is made impossible to effect accurate exposure control based on the digital signal representing the only object brightness level. The invention provides an exposure control circuit which is not susceptible of this alternate current component as it is removed in the course of the A-D conversion.

    摘要翻译： 本发明涉及摄影相机，更具体地说，涉及一种类型的曝光控制电路，其中表示对象亮度级的模拟输出被转换成被考虑到曝光值中的数字信号，以及 照相机快门根据此曝光值进行控制。 更具体地，涉及相对于A-D转换的这种常规型曝光控制的改进。 现有技术通过使用诸如以下比较类型的A-D转换器将表示对象亮度的电压转换为数字形式，其特征在于在将输入电压转换为相应的数字信号时缺乏集成方面。 因此，当拍摄对象的照明在比有效曝光时间间隔短的时间段内被闪烁时，将交流分量引入转换器的输入电压。 因此，不可能基于表示唯一对象亮度级的数字信号来实现精确的曝光控制。 本发明提供了一种曝光控制电路，其在A-D转换过程中被去除时不会受到该交流分量的影响。

    Data registering equipment for a camera
    3.
    发明授权
    Data registering equipment for a camera 失效
    相机数据注册设备

    公开(公告)号：US4053909A

    公开(公告)日：1977-10-11

    申请号：US547462

    申请日：1975-02-06

    申请人： Nobuhiko Shinoda ,  Tadashi Ito ,  Fumio Ito ,  Soichi Nakamoto

    发明人： Nobuhiko Shinoda ,  Tadashi Ito ,  Fumio Ito ,  Soichi Nakamoto

    IPC分类号： G03B17/24

    CPC分类号： G03B17/245 ,  G03B2217/243

    摘要： The present invention relates to an equipment which converts various data, including exposure setting data, for a photograph into codes so as to be stored in a register in order that the data stored in the register is later decoded and registered on the film. The equipment comprises a decoder for reading out and decoding the stored data in accordance with a signal corresponding to the feeding of the film and a plural number of registering heads operated by means of the output of the decoder, whereby the stored data is registered on the film in general indications such as letters or figures.

    摘要翻译： 本发明涉及将用于照片的各种数据（包括曝光设置数据）转换成代码以将其存储在寄存器中的设备，以使得存储在寄存器中的数据稍后被解码并登记在电影上。 该设备包括：解码器，用于根据与胶片馈送相对应的信号和通过解码器的输出操作的多个记录头来读出和解码存储的数据，由此存储的数据被登记在 一般的电影，如字母或数字。

    Exposure control device
    4.
    发明授权
    Exposure control device 失效
    接触控制装置

    公开(公告)号：US4103307A

    公开(公告)日：1978-07-25

    申请号：US799568

    申请日：1977-05-23

    申请人： Nobuhiko Shinoda ,  Tadashi Ito ,  Soichi Nakamoto ,  Fumio Ito

    发明人： Nobuhiko Shinoda ,  Tadashi Ito ,  Soichi Nakamoto ,  Fumio Ito

    IPC分类号： G03B7/091 ,  G03B17/20 ,  G03B7/08

    CPC分类号： G03B17/20 ,  G03B7/097

    摘要： An automatic exposure control device to convert the analogue value of an object to be photographed, to digital value for controlling appropriate exposure value using said digital value. The device has a photo-sensing means to sense the light from the object digitally, a photographing information setting means to digitally set various photographing information such as film sensitivity, diaphragm aperture value, shutter speed, etc., a calculating means to digitally calculate diaphragm aperture value, shutter speed value means corresponding to the output of the above mentioned photo-sensing means and the photographing information setting means, a function detecting and setting means to detect and set each functional state, and a sequence control means having an instructional function for various calculating operations to control sequence-wise the computation operation of the above mentioned computation device, corresponding to the output of said function detecting and setting means, wherein the sequence control means determines the photographing mode corresponding to the output of the above mentioned function detecting and setting means. At the same time, appropriate exposure value is calculated by the calculating means in accordance with the content of the above mentioned photographing means and the output of the photo-sensing means is converted to digital value.

    Electronic exposure control apparatus for cameras
    5.
    发明授权
    Electronic exposure control apparatus for cameras 失效
    电子曝光控制装置

    公开(公告)号：US4090208A

    公开(公告)日：1978-05-16

    申请号：US727628

    申请日：1976-09-28

    申请人： Nobuhiko Shinoda ,  Tadashi Ito ,  Soichi Nakamoto ,  Fumio Ito

    发明人： Nobuhiko Shinoda ,  Tadashi Ito ,  Soichi Nakamoto ,  Fumio Ito

    IPC分类号： G03B7/093 ,  G03B7/08

    CPC分类号： G03B7/093

    摘要： In the camera exposure control apparatus disclosed, a light sensor produces a first analog signal corresponding to the brightness of an object to be photographed. This signal is compared to a gradually varying second analog signal. The variation of the second analog signal is discontinued when the first and second signals reach a predetermined relationship and the second analog signal is stored. As the aperture of the camera's diaphragm is varied, the stored signal is compared with an analog signal corresponding to the diaphragm opening to produce a control signal that inhibits aperture variation when the latter compared signals reach a predetermined relationship.

    摘要翻译： 在所公开的照相机曝光控制装置中，光传感器产生与被拍摄物体的亮度对应的第一模拟信号。 该信号与逐渐变化的第二模拟信号进行比较。 当第一和第二信号达到预定关系并且存储第二模拟信号时，第二模拟信号的变化被中止。 随着照相机光阑的孔径变化，将存储的信号与对应于光阑开口的模拟信号进行比较，以产生当后者比较信号达到预定关系时抑制孔径变化的控制信号。

    Electronic exposure control apparatus
    8.
    发明授权
    Electronic exposure control apparatus 失效
    电子曝光控制装置

    公开(公告)号：US4245900A

    公开(公告)日：1981-01-20

    申请号：US864479

    申请日：1977-12-27

    申请人： Soichi Nakamoto ,  Fumio Ito ,  Yasuo Isobe ,  Tadashi Ito

    发明人： Soichi Nakamoto ,  Fumio Ito ,  Yasuo Isobe ,  Tadashi Ito

    IPC分类号： G03B7/091 ,  G03B7/097

    CPC分类号： G03B7/097

    摘要： An electronic exposure control apparatus for a camera includes a setting means to set the exposure factor, a compression means connected to the setting means, for compressing the above-mentioned exposure factor logarithmically and an analogue-digital conversion means, being connected to said compression means, and generating a pulse number which corresponds to the output from the compression means. Also included is a first counter, which is connected to the output of the above-mentioned analogue-digital conversion means, for counting the pulse number from the above-mentioned analogue-digital conversion means, a pulse generating means, a binary counter having plural number of bits and connected to the output of the above-mentioned pulse generating means, wherein the counter counts the pulse number from the above-mentioned pulse generating means in association with shutter release, and the output of the counter is connected to the first counter for resetting the memorized content of the first counter. A coincidence detection means is connected to the output of the binary counter, wherein the means generates signals when the memorized content of the first counter is reset, and a control means is connected to the above-mentioned coincidence detection means, wherein the opening and closing of shutter is controlled by the signal from the above-mentioned coincidence detection means.

    摘要翻译： 一种用于照相机的电子曝光控制装置包括：设置曝光因子的设定装置，连接到设定装置的压缩装置，用于压缩上述对数曝光因子和模拟数字转换装置，连接到所述压缩装置 并产生对应于来自压缩装置的输出的脉冲数。 还包括第一计数器，其连接到上述模拟数字转换装置的输出端，用于对来自上述模拟数字转换装置的脉冲数进行计数，脉冲发生装置，具有多个数字转换装置的二进制计数器 与上述脉冲发生装置的输出端连接的位数，其中计数器与上述脉冲发生装置相关的快门释放计数脉冲数，计数器的输出连接到第一计数器 用于重置第一计数器的存储内容。 重合检测装置连接到二进制计数器的输出端，其中当第一计数器的存储内容被复位时，该装置产生信号，并且控制装置连接到上述重合检测装置，其中打开和关闭 快门的控制由来自上述重合检测装置的信号控制。

    Exposure control system for a camera having a digital computer
    9.
    发明授权
    Exposure control system for a camera having a digital computer 失效
    具有数字计算机的相机的曝光控制系统

    公开(公告)号：US4534640A

    公开(公告)日：1985-08-13

    申请号：US664924

    申请日：1984-10-24

    申请人： Tadashi Ito ,  Yasuo Isobe ,  Fumio Ito ,  Soichi Nakamoto

    发明人： Tadashi Ito ,  Yasuo Isobe ,  Fumio Ito ,  Soichi Nakamoto

    IPC分类号： G03B7/095 ,  G03B7/085 ,  G03B17/00

    CPC分类号： G03B7/095

    摘要： An exposure control system for a photographic camera of the type provided with a shutter preselection automatic exposure range and a diaphragm preselection automatic exposure range, wherein various exposure control parameters are digitized and applied to a digital computer for providing either shutter interval or diaphragm aperture control signals. For exposure control in the shutter preselection automatic exposure range, there are provided a signal generator associated with the camera diaphragm mechanism, an analog-to-digital converter cooperative therewith for providing digital signals corresponding to ever varying aperture sizes as the diaphragm mechanism is operated from its fully open position, and a comparator connected between said computer and converter upon detection of coincidence of the signal from the computer with one of the signals from the converter to provide a diaphragm mechanism arresting signal. Further, the invention provides various types of non-contact device usuable as the diaphragm information generator.

    摘要翻译： 一种具有快门预选自动曝光范围和光圈预选自动曝光范围的类型的照相机的曝光控制系统，其中各种曝光控制参数被数字化并应用于数字计算机，以提供快门间隔或光圈孔径控制信号 。 对于快门预选自动曝光范围中的曝光控制，提供了与照相机光阑机构相关联的信号发生器，与之相配合的模拟 - 数字转换器，用于提供对应于不断变化的光圈尺寸的数字信号， 其完全打开位置以及连接在所述计算机和转换器之间的比较器，用于检测来自计算机的信号与来自转换器的信号之一的一致以提供隔膜机构阻滞信号。 此外，本发明提供了可用作隔膜信息发生器的各种类型的非接触装置。

    Exposure control device for a camera having a digital operation device
    10.
    发明授权
    Exposure control device for a camera having a digital operation device 失效
    具有数字操作装置的相机的曝光控制装置

    公开(公告)号：US4353630A

    公开(公告)日：1982-10-12

    申请号：US871492

    申请日：1978-01-23

    申请人： Fumio Ito ,  Tadashi Ito ,  Soichi Nakamoto ,  Yasuo Isobe

    发明人： Fumio Ito ,  Tadashi Ito ,  Soichi Nakamoto ,  Yasuo Isobe

    IPC分类号： G03B7/0805 ,  G03B7/091 ,  G03B7/095 ,  G03B7/14

    CPC分类号： G03B7/097

    摘要： A camera having an exposure control device in which various photographing informations are converted into digital amounts and supplied to a digital operation circuit and the exposure is controlled by the output of the operation circuit. The camera comprises a digital-analogue converter for converting diaphragm informations from the operation circuit into analogue diaphragm informations, a comparison means for comparing the analogue diaphragm informations from a photographing lens with the analogue informations from the above digital-analogue converter, and an alternating switch which supplies the informations from the photographing lens to the comparison means for shutter preference photographing, and supplies the analogue informations from the photographing lens to the analogue-digital converter for diaphragm preference photographing. The output of the analogue-digital converter is supplied to the operation circuit, and the shutter preference and diaphragm preference photographings is made possible by the changeover of the alternating switch.

    摘要翻译： 一种具有曝光控制装置的相机，其中各种拍摄信息被转换成数字量并提供给数字操作电路，并且曝光由操作电路的输出控制。 相机包括用于将来自操作电路的光阑信息转换为模拟信息的数模转换器，用于将来自拍摄镜头的模拟信息与来自上述数模转换器的模拟信息进行比较的比较装置，以及交替开关 其将来自拍摄镜头的信息提供给用于快门偏好拍摄的比较装置，并且将来自拍摄镜头的模拟信息提供给用于隔膜偏好拍摄的模拟数字转换器。 模拟数字转换器的输出被提供给操作电路，并且通过交替开关的切换使得快门优先和隔膜偏好照片成为可能。