-
71.发明授权Exposure parameter information generating circuit in a single lens reflex camera 失效曝光参数信息生成电路在单镜头反光相机中
公开(公告)号：US4275953A
公开(公告)日：1981-06-30
申请号：US73449
申请日：1979-09-07
申请人： Sakuji Watanabe , Yoshiaki Ohtsubo , Kenji Toyoda
发明人： Sakuji Watanabe , Yoshiaki Ohtsubo , Kenji Toyoda
CPC分类号： G03B7/16
摘要： In a single lens reflex camera having an interchangeable photographing lens having a first and a second signal member, the camera being usable in combination with an electronic flash unit and having a third signal member, there is provided an exposure parameter information generating circuit which comprises first converter means for converting the mechanical outputs of the first and third signal members into electrical output information, second converter means for converting the mechanical output of the second signal member into electrical output information, an adder circuit for adding the electrical outputs of the first and second converter means and putting out electrical information, a first output terminal for applying the output of the first converter means to an exposure time operation circuit, and a second output terminal for applying the output of the adder circuit to the electronic flash unit.
摘要翻译： 在具有具有第一和第二信号构件的可互换拍摄镜头的单镜头反光相机中，所述照相机可与电子闪光灯组合使用并具有第三信号构件，提供曝光参数信息产生电路，其包括第一 用于将第一和第三信号部件的机械输出转换为电输出信息的转换器装置，用于将第二信号部件的机械输出转换为电输出信息的第二转换器装置，用于将第一和第二信号的电输出相加的加法器电路 转换器装置和放出电信息，用于将第一转换器装置的输出施加到曝光时间操作电路的第一输出端子和用于将加法器电路的输出施加到电子闪光单元的第二输出端子。
-
公开(公告)号：US4236804A
公开(公告)日：1980-12-02
申请号：US59037
申请日：1979-07-19
申请人： Kenji Toyoda , Jun Shimomura
发明人： Kenji Toyoda , Jun Shimomura
摘要： A lens information introducing device in a camera comprises a photoelectrically legible digital code pattern provided on a lens, optical means for introducing the code pattern into a camera body and imaging the same at a predetermined position, photoelectric converter means disposed at the predetermined position for photoelectrically converting the image of the code pattern formed by the optical means, and shaping means for comparing the photoelectrically converted signal by the photoelectric converter means with a standard signal and generating the lens information indicated by the code pattern as a digital signal.
摘要翻译： 相机中的透镜信息引入装置包括设置在透镜上的光电清晰的数字码图案，用于将代码图案引入相机主体并将其成像在预定位置的光学装置，光电转换器装置设置在预定位置用于光电 转换由光学装置形成的编码图案的图像;以及整形装置，用于将光电转换装置的光电转换信号与标准信号进行比较，并产生由码模式表示的透镜信息作为数字信号。
-
公开(公告)号：US4196989A
公开(公告)日：1980-04-08
申请号：US969368
申请日：1978-12-14
申请人： Kenji Toyoda , Sakuji Watanabe , Yoshitaka Araki
发明人： Kenji Toyoda , Sakuji Watanabe , Yoshitaka Araki
摘要： An improvement in TTL metering system automatic control camera is disclosed. This type of camera requires a complicate control mechanism. According to the present invention, a substantial simplification of the mechanism is attained by providing the camera with a switch means interlocked with a shutter releasing operation and operable before the diaphragm being conrtrolled by a diaphragm control device, first and second holding circuits, a delay circuit, means for introducing the output of the first holding circuit into the diaphragm control device and means for introducing the output of the second holding circuit into a shutter control device.
摘要翻译： 公开了TTL计量系统自动控制摄像机的改进。 这种相机需要复杂的控制机制。 根据本发明，通过为相机提供与快门释放操作联锁的开关装置，并且可以在隔膜被隔膜控制装置，第一和第二保持电路，延迟电路 用于将第一保持电路的输出引入隔膜控制装置的装置和用于将第二保持电路的输出引入快门控制装置的装置。
-
公开(公告)号：US4104666A
公开(公告)日：1978-08-01
申请号：US739850
申请日：1976-11-09
申请人： Kenji Toyoda , Sakuji Watanabe
发明人： Kenji Toyoda , Sakuji Watanabe
CPC分类号： G03B7/087
摘要： The disclosure describes an improved exposure control circuit for camera in which an electromagnet adapted for control of camera shutter or diaphragm is excited with a constant current stabilized against variation of source voltage so that the operation time of said shutter or diaphragm may be remained always constant.
摘要翻译： 本公开描述了一种用于照相机的改进的曝光控制电路，其中适用于控制照相机快门或光阑的电磁体被以不变的源电压稳定的恒定电流激发，使得所述快门或隔膜的操作时间总是保持恒定。
-
公开(公告)号：US4061431A
公开(公告)日：1977-12-06
申请号：US628654
申请日：1975-11-04
申请人： Kenji Toyoda
发明人： Kenji Toyoda
CPC分类号： G03B7/091 , G01J1/18 , H03M1/1057
摘要： A light measuring and indicating circuit utilizing indicating elements such as light-emitting diodes, to indicate corresponding light intensity levels. Intermediate levels are indicated without increasing the number of flip-flops employed in an activating circuit for the light-emitting diodes by intentionally causing the circuit to activate light-emitting diodes alternately. The activating circuit includes a reversible digital counter controlling the light-emitting diodes, two comparators for operating the counter reversibly in response to the comparison of light-dependent and standard signals, and a digital-to-analog converter which varies one or more of said signals in accordance with a counter output.
摘要翻译： 利用诸如发光二极管的指示元件的光测量和指示电路来指示对应的光强度水平。 指示中间级别，而不增加用于发光二极管的激活电路中使用的触发器的数量，其有意地使电路交替地激活发光二极管。 激活电路包括控制发光二极管的可逆数字计数器，用于响应于光依赖和标准信号的比较而可逆地操作计数器的两个比较器和改变所述光源相关标准信号的一个或多个的数模转换器 信号按照计数器输出。
-
公开(公告)号：US4043677A
公开(公告)日：1977-08-23
申请号：US639176
申请日：1975-12-09
申请人： Kenji Toyoda
发明人： Kenji Toyoda
CPC分类号： G03B17/20
摘要： An exposure meter includes a plurality of indicating elements, such as illuminating diodes which are turned on by the output of a photometry device and the diodes are repeatedly turned on and off by the output signal from a switch. This turn on and turn off of the diodes can be reversely effected. By so doing, a preset shutter speed or stop value is indicated in the finder and pointer-follow function of the exposure can be achieved using the minimum number of diodes.
摘要翻译： 曝光表包括多个指示元件，例如通过测光装置的输出导通的照明二极管，并且二极管通过来自开关的输出信号被反复接通和关断。 可以相反地实现二极管的导通和关断。 通过这样做，在取景器中指示预设的快门速度或停止值，并且可以使用最小数量的二极管实现曝光的指针跟随功能。
-
77.发明授权
公开(公告)号：US3970933A
公开(公告)日：1976-07-20
申请号：US542542
申请日：1975-01-20
申请人： Ichiro Hamaguchi , Kenji Toyoda
发明人： Ichiro Hamaguchi , Kenji Toyoda
IPC分类号： G03B7/26 , G01R19/155 , G01R19/165 , G01R31/36 , G01R19/16 , G01N27/46
CPC分类号： G01R19/16542 , G01R19/155 , G01R19/16538
摘要： A device for testing the voltage of a voltage source comprises a bridge circuit, a differential switching circuit and an indicator element. The bridge circuit includes a first circuit comprising a first resistor; a second circuit comprising first diode means connected to the first circuit; a third circuit comprising a second resistor connected to the first circuit, the junction between the third and first circuits being connected to one terminal of the voltage source; and a fourth circuit comprising a serial connection of second diode means and a third resistor. One end of the fourth circuit is connected to the third circuit and the other end is connected to the second circuit. The junction between the fourth and second circuits is connected to the other terminal of the voltage source. The third resistor has a resistance value sufficiently great so that the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits depends on the source voltage. The differential switching circuit is adapted to change its condition in accordance with the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits. The switching circuit has a terminal for outputting the condition thereof. The indicator element is connected to the output terminal to indicate the condition of the differential switching circuit.
摘要翻译： 用于测试电压源的电压的装置包括桥接电路，差分开关电路和指示器元件。 桥电路包括第一电路，其包括第一电阻器; 第二电路，包括连接到第一电路的第一二极管装置; 第三电路，包括连接到第一电路的第二电阻器，第三和第一电路之间的连接点连接到电压源的一个端子; 以及包括第二二极管装置和第三电阻器的串联连接的第四电路。 第四电路的一端连接到第三电路，另一端连接到第二电路。 第四和第二电路之间的连接点连接到电压源的另一个端子。 第三电阻器的电阻值足够大，使得第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压取决于源极电压。 差分开关电路适于根据第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压来改变其状态。 开关电路具有用于输出其状态的端子。 指示器元件连接到输出端子以指示差分开关电路的状态。
-
-
-
-
-
-
搜索结果
77 条记录 (耗时 0.024 秒)
