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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
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。
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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
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。
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3.发明授权
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。
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公开(公告)号：US4125848A
公开(公告)日：1978-11-14
申请号：US787793
申请日：1977-04-15
申请人： Tadashi Ito , Fumio Ito , Soichi Nakamoto , Yasuo Isobe
发明人： Tadashi Ito , Fumio Ito , Soichi Nakamoto , Yasuo Isobe
摘要： An exposure control for a single lens reflex camera includes an adjustable shutter which is arranged to furnish a plurality of exposure times, and an adjustable electrical delay circuit which is operative to adjust the shutter to select the exposure time. An adjustable diaphragm is also included which is arranged to furnish a plurality of aperture sizes and is mounted into a lens and which further includes circuitry for receiving light from a photographing object through the diaphragm and converting it into electrical signal. A diaphragm determining device is connected with the diaphragm to select an aperture size, and which is connected to the receiving circuitry and further includes circuitry for detecting the adjustable aperture limit connected with the delay circuit to compensate the adjusted exposure time for proper exposure. A manually operated selector is included for adjusting the diaphragm determining device to insert the adjusted time. A storage capacitor is also included for memorizing the electrical signal of the receiving circuitry connected with the delay circuit when shutter operation is effected.
摘要翻译： 用于单个镜头反射照相机的曝光控制器包括布置成提供多个曝光时间的可调节快门以及可调节电延迟电路，其可操作以调节快门以选择曝光时间。 还包括可调整的膜片，其被布置成提供多个孔径尺寸并且被安装到透镜中，并且还包括用于通过隔膜接收来自拍摄对象的光并将其转换成电信号的电路。 光阑确定装置与光阑连接以选择光圈尺寸，并且其连接到接收电路，并且还包括用于检测与延迟电路相连接的可调节孔径极限的电路，以补偿经适当曝光的调整曝光时间。 包括一个手动选择器，用于调节隔膜确定装置以插入调整时间。 还包括存储电容器，用于在快门操作时存储与延迟电路连接的接收电路的电信号。
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公开(公告)号：US4125846A
公开(公告)日：1978-11-14
申请号：US717669
申请日：1976-08-25
申请人： Soichi Nakamoto , Fumio Ito , Yasuo Isobe , Tadashi Ito
发明人： Soichi Nakamoto , Fumio Ito , Yasuo Isobe , Tadashi Ito
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 said 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 said 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 said means generates a signal 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 the 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，连接到所述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相连，其中所述计数器与快门释放相关联地对上述脉冲发生装置的脉冲数进行计数，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。 一致检测装置连接到二进制计数器的输出端，其中所述装置在第一计数器的存储内容被复位时产生信号，并且控制装置连接到上述重合检测装置，其中， 快门的关闭由来自上述重合检测装置的信号控制。
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公开(公告)号：US4074292A
公开(公告)日：1978-02-14
申请号：US678033
申请日：1976-04-19
申请人： Soichi Nakamoto , Tadashi Ito , Fumio Ito , Yasuo Isobe
发明人： Soichi Nakamoto , Tadashi Ito , Fumio Ito , Yasuo Isobe
CPC分类号： G03B17/20
摘要： A system for indicating photographic information which includes a circuit for converting an optical signal into an electrical signal. Comparing elements are provided for comparing the electrical signal with one of a plurality of reference signals having different levels, and electrical elements serve to produce an indication signal responsive to the output from one of the comparing elements. A plurality of luminescent components are connected to the signal producing element for turning-on in response to an indication signal. A plurality of indicating segments indicate the photographic information which the luminescent elements irradiate, the number of indicating segments being less than the number of luminescent elements and at least one of the indicating elements is selectively illuminated by more than one of the luminescent elements. The indicating segments have different colors to indicate different kinds of photographic information, whereby one indicating segment is capable of indicating two different modes of operation of the system. This is a continuation of application Ser. No. 437,621 filed Jan. 29, 1974, now abandoned.
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公开(公告)号：US4052727A
公开(公告)日：1977-10-04
申请号：US527016
申请日：1974-11-25
申请人： Tadashi Ito , Fumio Ito , Soichi Nakamoto , Yasuo Isobe
发明人： Tadashi Ito , Fumio Ito , Soichi Nakamoto , Yasuo Isobe
摘要： An exposure control device for a single lens reflex camera includes an adjustable shutter which is arranged to furnish a plurality of exposure times, and an adjustable electrical delay circuit which is operative to adjust the shutter to select the exposure time. An adjustable diaphragm device is also included which is arranged to furnish a plurality of aperture sizes and is mounted into a lens and which further includes means for receiving light from a photographing object through the diaphragm device and converting it into electrical signal. A diaphragm determining means is connected with the diaphragm device to select an aperture size, and which is connected to the receiving means and further includes means for detecting the adjustable aperture limit connected with the delay circuit to compensate the adjusted exposure time for proper exposure. A manually operated selector means is included for adjusting the diaphragm determining means to insert the adjusted time thereinto. Storage means is also included for memorizing the electrical signal of the receiving means connected with the delay means when shutter operation is effected.
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8.发明授权Automatic exposure control apparatus which prevents simultaneous diaphragm and shutter speed preselection 失效自动接触控制装置，同时防止同时进行的膜片和快门速度的选择
公开(公告)号：US4045807A
公开(公告)日：1977-08-30
申请号：US638029
申请日：1975-12-05
申请人： Fumio Ito , Tadashi Ito , Yasuo Isobe , Soichi Nakamoto
发明人： Fumio Ito , Tadashi Ito , Yasuo Isobe , Soichi Nakamoto
摘要： An automatic exposure control apparatus for a single lens reflex camera equipped with a shutter speed preselection exposure range and a diaphragm aperture preselection exposure range. When the apparatus is set for operation in the shutter speed preselection exposure range, the shutter speed preselecting dial is incapable of being set to its automatic adjustment position. When set for operation in the diaphragm aperture preselection exposure range, the diaphragm aperture preselecting dial is incapable of being set to its automatic adjustment positon.
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公开(公告)号：US3971047A
公开(公告)日：1976-07-20
申请号：US467473
申请日：1974-05-06
申请人： Yasuo Isobe , Tadashi Ito , Fumio Ito
发明人： Yasuo Isobe , Tadashi Ito , Fumio Ito
CPC分类号： G03B7/083
摘要： In a single lens reflex camera, a lever responsive to operation of a shutter button initiates timing of an electronic shutter control a predetermined time interval before the shutter is actually opened. The predetermined time interval corresponds to the time elapse between the moment the shutter control changes the current which operates the magnet that holds the shutter open and the moment the magnet actually causes the shutter to close. After this predetermined time interval the shutter is opened, such as by running of the opening screen. After the measured shutter interval has ended, a current in the shutter control changes and operates on a magnet which has been holding the shutter open and causes the magnet to close the shutter, such as by releasing a closing screen.
摘要翻译： 在单镜头反光相机中，响应于快门按钮的操作的控制杆在快门实际打开之前预定时间间隔开始电子快门控制的定时。 预定时间间隔对应于快门控制改变操作保持快门打开的磁体的电流与磁体实际上使快门关闭的时刻之间的时间。 在该预定时间间隔之后，例如通过打开屏幕的运行来打开快门。 在测量的快门间隔结束之后，快门控制中的电流改变并且操作在已经保持快门打开的磁体上，并且例如通过释放关闭屏幕使磁体关闭快门。
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