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公开(公告)号：US3678354A
公开(公告)日：1972-07-18
申请号：US3678354D
申请日：1969-10-13
Applicant: CANON KK
Inventor： KITANOSONO TATSUSHI , MASHIMO YUKIO , TAKISHIMA YOSHIYUKI
Abstract: Apparatus for controlling the drive of a direct current (DC) motor to permit it to be rotated reversibly, which comprises a motor driving circuit with a DC motor and switching means connected in series with an alternating current (AC) source and a resistor bridge circuit for controlling the switching means. The DC motor is driven to rotate reversibly under the control of the switching means to be energized by the output voltage of pickup terminals of said resistor bridge circuit to bring a controlled object into the predetermined position.
Abstract translation: 用于控制直流（DC）电动机的驱动以允许其可逆地旋转的装置，其包括具有直流电动机的电动机驱动电路和与交流（AC）源串联连接的开关装置和电阻器电路电路 用于控制切换装置。 在开关装置的控制下，直流电动机被驱动以可逆地旋转，以被所述电阻器桥接电路的拾取端子的输出电压激励，从而使受控对象进入预定位置。
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2.发明授权
公开(公告)号：US3688659A
公开(公告)日：1972-09-05
申请号：US3688659D
申请日：1970-11-30
Applicant: CANON KK
Inventor： TAKISHIMA YOSHIYUKI , MASHIMO YUKIO
CPC classification number: H05B41/32
Abstract: A flash device for a camera comprising a main capacitor charged by a power source, a flash circuit for illumination of a flash lamp and a detector circuit, said detector circuit being thermally compensated for thermal variation of the flash device.
Abstract translation: 一种用于照相机的闪光装置，包括由电源充电的主电容器，用于照明闪光灯的闪光灯电路和检测器电路，所述检测器电路被热补偿闪光装置的热变化。
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公开(公告)号：US3879118A
公开(公告)日：1975-04-22
申请号：US43583274
申请日：1974-01-23
Applicant: CANON KK
Inventor： KIYOHARA TAKEHIKO , TSUNEKAWA TOKUICHI , TAKISHIMA YOSHIYUKI , NAKAMOTO SOICHI , TAGUCHI TETSUYA , MASHIMO YUKIO
Abstract: A photographic exposure control apparatus for a single lens reflex camera having an electrically timed shutter. The apparatus is characterized in the use of a variable frequency pulse-forming circuit in combination with a pulse frequency control circuit and a pulse frequency modulating circuit for providing shutter interval control signals. Responsive to the level of luminance of a subject being photographed just before film exposure is initiated, the pulse frequency control circuit controls the frequency of the pulse-forming circuit so as to sufficiently reduce the time necessary for storing a group of pulses of which the number depends upon the level of subject luminance. The pulse frequency modulating circuit simultaneously modulates the frequency of pulses supplied thereto from the pulse-forming circuit in such a way that when the number of pulses modulated reaches the number of pulses stored, an exposure interval is established.
Abstract translation: 一种具有电定时快门的单镜头反光相机的照相曝光控制装置。 该装置的特征在于使用可变频率脉冲形成电路与脉冲频率控制电路和用于提供快门间隔控制信号的脉冲频率调制电路的组合。 响应于在胶片曝光开始之前正在拍摄的被摄体的亮度水平，脉冲频率控制电路控制脉冲形成电路的频率，以充分减少存储一组脉冲数所需的时间 取决于被摄体亮度的水平。 脉冲频率调制电路同时调制从脉冲形成电路供给的脉冲的频率，使得当调制的脉冲数达到存储的脉冲数时，建立曝光间隔。
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公开(公告)号：US3687042A
公开(公告)日：1972-08-29
申请号：US3687042D
申请日：1970-05-01
Applicant: CANON KK
Inventor： MIZUI SEIICHIRO , TAKISHIMA YOSHIYUKI
Abstract: In the disclosed electric blade actuating device for a photographing apparatus an electromagnetic mechanism has a bladeactuator frame with at least three magnets, a stationary supporting member and electromagnetic coils or solenoids in numbers corresponding to the number of said magnets, and a switching means for said electromagnetic mechanism. The electromagnetic coils or solenoids are fixedly provided on said stationary supporting member. The switching means is arranged to switch the feed polarity from a power source to the electromagnetic mechanism for blade actuation by rotating the actuator frame. This is done by exciting the electromagnetic coils. The electromagnetic mechanism is arranged on a circumference of the device about equal intervals.
Abstract translation: 在所公开的用于摄影装置的电动叶片致动装置中，电磁机构具有至少三个磁体的叶片致动器框架，与所述磁体的数量相对应的数字的固定支撑构件和电磁线圈或螺线管，以及用于 说电磁机制。 电磁线圈或螺线管固定地设置在所述固定支撑构件上。 开关装置被布置成通过旋转致动器框架将馈电极性从电源切换到用于叶片致动的电磁机构。 这是通过激励电磁线圈完成的。 电磁机构围绕相同的间隔布置在装置的圆周上。
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公开(公告)号：US3678835A
公开(公告)日：1972-07-25
申请号：US3678835D
申请日：1970-08-12
Applicant: CANON KK
Inventor： TAKISHIMA YOSHIYUKI
IPC: G02B7/32
CPC classification number: G02B7/32
Abstract: Automatic focusing device for a camera has a chopper and a separator. The chopper is located in front of a deflecting device for directing two different light beams on a common photoelectric effect element. The separator is to separate into two signals the output of the photoelectric effect element which are amplified by a single AC amplifier. The separator is synchronized with the chopper.
Abstract translation: 相机的自动聚焦装置具有切碎机和分离器。 斩波器位于偏转装置的前面，用于将两个不同的光束引导到公共光电效应元件上。 分离器将由单个AC放大器放大的光电效应元件的输出分离成两个信号。 分离器与斩波器同步。
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Patent Agency Ranking
公开(公告)号：DE2755009A1
公开(公告)日：1978-06-15
申请号：DE2755009
申请日：1977-12-09
Applicant: CANON KK
Inventor： AIZAWA HIROSHI , UCHIDOI MASANORI , KOZUKI SUSUMU , DATE NOBUAKI , SHIMIZU MASAMI , TAKISHIMA YOSHIYUKI
Abstract: In the camera disclosed, a light measuring device and input data setting device establish exposure control signals which regulate exposure elements. When the control signal is out of range of an element, a switch turns on an adjusting arrangement which resets the setting device. The setting device may preset an element such as the aperture or shutter.
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公开(公告)号：DE2448439A1
公开(公告)日：1975-04-24
申请号：DE2448439
申请日：1974-10-10
Applicant: CANON KK
Inventor： TUNEKAWA TOKUICHI , NAKAMOTO SOICHI , TAKISHIMA YOSHIYUKI , MACHIDA TOKIO , TAGUCHI TETSUYA
Abstract: Cadmium sulphide photocells suffer from poor response w.r.t. silicon photodiode arrays although they do not suffer from large leakage currents which generate false exposure readings at low intensities. The invention provides a compensating circuit for silicon blue cells in which a differential amplifier coupled to a variable resistance determines the leakage current through the photocells and balances this out by a variable dark current. The subsequent output of the system is amplified by an operational amplifier, of which the variable resistance is part. An embodiment of the invention thus ensures a linear pattern of the photo current dependent on the lighting strength even when the latter is poor.
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公开(公告)号：DE2058679A1
公开(公告)日：1971-07-22
申请号：DE2058679
申请日：1970-11-28
Applicant: CANON KK
Inventor： TAKISHIMA YOSHIYUKI , MASHIMO YUKIO
IPC: H05B41/32
Abstract: A flash device for a camera comprising a main capacitor charged by a power source, a flash circuit for illumination of a flash lamp and a detector circuit, said detector circuit being thermally compensated for thermal variation of the flash device.
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公开(公告)号：DE2757777A1
公开(公告)日：1978-06-29
申请号：DE2757777
申请日：1977-12-23
Applicant: CANON KK
Inventor： KOZUKI SUSUMU , UCHIDOI MASANORI , DATE NOBUAKI , SHIMIZU MASAMI , AIZAWA HIROSHI , TAKISHIMA YOSHIYUKI
Abstract: A motor drive unit adapted for use with a camera having a motorized shutter speed adjusting device. When a continuous series of frame exposures are to be made at a predetermined frame frequency, the set value of shutter time in the camera is made to be compared with the longest possible shutter time dependent upon that frame frequency by a comparator provided in the motor drive unit. When the actual shutter time value exceeds the longest possible one, the motorized shutter speed adjusting device is actuated, causing the shutter time value to change itself to the longest possible value.
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公开(公告)号：DE2166210A1
公开(公告)日：1973-07-19
申请号：DE2166210
申请日：1971-01-23
Applicant: CANON KK
Inventor： TAGUCHI TATSUYA , JURA YUKIO , TAKISHIMA YOSHIYUKI
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