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公开(公告)号：US4462673A
公开(公告)日：1984-07-31
申请号：US401701
申请日：1982-07-26
申请人： Masanori Uchidoi , Nobuyuki Suzuki
发明人： Masanori Uchidoi , Nobuyuki Suzuki
IPC分类号： G03B7/093
CPC分类号： G03B7/093
摘要： The disclosed shutter control circuit presents a shutter time as an analog value and converts the same into a digital value by an A/D converter, then nullifies information below a prescribed step of shutter time out of thus digitally converted value for effecting shutter time control based on a digital value which is above said prescribed step. In such a type of shutter time control circuit, even when an analog value as a preset value contains a certain error, the shutter time control can be done with said error being corrected and thus it is very convenient. In this case, however, an error in a positive direction only can be corrected, and an error in a negative direction can not be corrected. The present invention has been completed in view of the above and is to provide a shutter time control circuit which can correct the above mentioned analog value or A/D converted digital value by a prescribed amount so that errors in both the positive direction and the negative direction can be corrected in the above mentioned type of shutter time control circuit.
摘要翻译： 所公开的快门控制电路提供快门时间作为模拟值，并通过A / D转换器将其转换为数字值，然后使由于数字转换的值的规定的快门时间步长以下的信息无效，以进行快门时间控制 在高于所述规定步骤的数字值上。 在这种类型的快门时间控制电路中，即使作为预设值的模拟值包含特定误差，也可以在校正所述误差的情况下进行快门时间控制，因此非常方便。 然而，在这种情况下，仅能够校正正方向的误差，不能校正负方向的误差。 鉴于上述问题，本发明是完成的，其目的是提供一种快门时间控制电路，其能够将上述模拟值或A / D转换数字值校正规定量，使正方向和负方向的误差 可以在上述类型的快门时间控制电路中校正方向。
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公开(公告)号：US4268152A
公开(公告)日：1981-05-19
申请号：US107552
申请日：1979-12-27
CPC分类号： G03B9/62
摘要： A control system for a camera controls a shutter release operation electromagnetically. A signal generating circuit produces a switching signal for operating a switching circuit which supplies current to a control circuit for a camera. The signal generating circuit is in a condition to always produce a switching signal when a camera operation member is set to normal photographing modes other than the bulb photographing mode, and is out of condition to produce the switching signal during the time between actuation of a magnet and termination of the shutter opening operation. The closing operation of the shutter is checked by means of a mechanical control member during the release when the camera operation member is set in the bulb photographing mode.
摘要翻译： 用于相机的控制系统以电磁方式控制快门释放操作。 信号发生电路产生切换信号，用于操作向摄像机的控制电路提供电流的开关电路。 当相机操作部件被设置为除了灯泡拍摄模式之外的正常拍摄模式时，信号发生电路处于总是产生切换信号的状态，并且在磁体致动之前的时间内不能产生切换信号 并且快门打开操作的终止。 当照相机操作构件被设置在灯泡拍摄模式时，通过机械控制构件在释放期间检查快门的关闭操作。
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公开(公告)号：US4387977A
公开(公告)日：1983-06-14
申请号：US85230
申请日：1979-10-16
CPC分类号： G03B7/26
摘要： The disclosed camera power control devices operate with a camera in which a first switch responds to initial movement of a shutter release member, and a second switch responds to further movement of the release member. In the power control device, turning the first switch on energizes the light metering and display circuits, and turning on the second switch supplies an exposure control circuit such as a shutter control circuit with electrical energy. The power control device is provided with an electrical timer circuit, and a selection arrangement operates to selectively actuate the timer circuit when the release member is returned to its rest position and the first switch changes is state from ON to OFF. During a period of time determined by the timer circuit, power continues to be supplied to operate the light metering and display circuits.
摘要翻译： 所公开的照相机功率控制装置与其中第一开关响应快门释放构件的初始移动的照相机一起操作，并且第二开关响应于释放构件的进一步移动。 在功率控制装置中，转动第一开关使得计量和显示电路通电，并且打开第二开关为电能提供诸如快门控制电路的曝光控制电路。 功率控制装置设置有电定时器电路，并且当释放构件返回到其静止位置并且第一开关从接通变为断开状态时，选择装置用于选择性地启动定时器电路。 在由定时器电路确定的时间段期间，继续供电以操作测光和显示电路。
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公开(公告)号：US4247186A
公开(公告)日：1981-01-27
申请号：US50124
申请日：1979-06-19
摘要： A photometric circuit for a camera including a first operational amplifier with a photo-electric element connected between its inverted and non-inverted input terminals and, a logarithmic compression diode connected between the output terminal and the inverted input terminal of the first operational amplifier, thus providing a voltage corresponding to the logarithmic value of the brightness of an object to be photographed at the output terminal of the first operational amplifier.A second operational amplifier has a plurality of temperature compensating commonly polarized diodes connected in parallel between its inverted input terminal and the output terminal. A first constant voltage is applied to the non-inverted input terminal of the second operational amplifier while a second constant voltage is applied through a resistor to the inverted input terminal of the second operatonal amplifier, thereby providing temperature-compensation of the output voltage of said first operational amplifier.
摘要翻译： 一种用于照相机的测光电路，包括连接在其反相和非反相输入端子之间的光电元件的第一运算放大器和连接在第一运算放大器的输出端和反相输入端之间的对数压电二极管，因此 提供与在第一运算放大器的输出端子处拍摄的物体的亮度的对数值相对应的电压。第二运算放大器具有多个温度补偿共极化二极管，并联连接在其反相输入端和 输出端子。 第一恒定电压施加到第二运算放大器的非反相输入端，而第二恒定电压通过电阻施加到第二操作放大器的反相输入端，从而提供所述第二运算放大器的输出电压的温度补偿 第一运算放大器。
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公开(公告)号：US4681441A
公开(公告)日：1987-07-21
申请号：US834492
申请日：1986-02-24
申请人： Masanori Uchidoi , Nobuyuki Suzuki
发明人： Masanori Uchidoi , Nobuyuki Suzuki
摘要： A light measuring device which is provided with a plurality of light sensitive elements and is arranged to selectively detect outputs of these light sensitive elements includes means for short-circuiting both terminals of the light sensitive element not required for detection in a light measuring mode selected out of different light measuring modes.
摘要翻译： 设置有多个光敏元件并且被选择性地检测这些光敏元件的输出的光测量装置包括用于使选择的光测量模式中不需要检测的光敏元件的两端短路的装置 的不同的光测量模式。
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公开(公告)号：US5166840A
公开(公告)日：1992-11-24
申请号：US758464
申请日：1991-09-06
CPC分类号： H04N1/212 , G11B19/02 , G11B27/22 , G11B33/10 , H04N1/2112 , H04N5/772 , G11B2220/20 , H04N2101/00 , H04N2201/214 , Y10S358/906
摘要： A picture image recording device using a recording medium which permits setting a plurality of recording tracks separately from each other for recording picture image signals on each of them. In the improvement made by this invention, the operating mode of the device is shiftable at least between two modes including a first mode in which image recording is performed only on one recording track and a second mode in which image recording is performed continuously or sequencially on a plurality of recording tracks.
摘要翻译： 一种使用记录介质的图像记录装置，其允许彼此分开地设置多个记录磁道，以在它们中的每一个上记录图像信号。 在本发明的改进中，装置的操作模式至少可以在两种模式之间移动，这两种模式包括仅在一个记录磁道上执行图像记录的第一模式和连续或顺序地执行图像记录的第二模式 多个记录轨道。
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公开(公告)号：US4464609A
公开(公告)日：1984-08-07
申请号：US551491
申请日：1983-11-14
申请人： Zenzo Nakamura , Takashi Uchiyama , Shohei Ohtaki , Tokuichi Tsunekawa , Masanori Uchidoi , Yukio Mashimo
发明人： Zenzo Nakamura , Takashi Uchiyama , Shohei Ohtaki , Tokuichi Tsunekawa , Masanori Uchidoi , Yukio Mashimo
CPC分类号： H05B41/325
摘要： A voltage detecting means is provided in a flash lamp firing circuit for detecting the attainment of the voltage of a storage capacitor to a satisfactory lamp firing voltage level to assure that a photographic camera associated with the flash lighting unit operates in a flash exposure range switched from a daylight exposure range only when a sufficient voltage is available to fire the lamp at the time of striking of the lamp. In one embodiment, the detecting means comprises two transistorized circuits having output terminals one of which is connected to the gate lead of a SCR in a discharge circuit of the lamp, and another output terminal which is arranged to be connectable to a light-emitting diode of the camera and therefrom connected to the gate lead of an electronic change-over switch for selection of the operating ranges of the camera, the light-emitting diode being arranged to be visible from the outside of the camera so that the operator is immediately aware if the storage capacitor voltage has attained the satisfactory firing level.
摘要翻译： 电压检测装置设置在闪光灯点火电路中，用于检测存储电容器的电压达到满意的灯点火电压电平，以确保与闪光照明单元相关联的照相机在从 日光曝光范围仅在足够的电压可用于在点亮灯时点亮灯。 在一个实施例中，检测装置包括两个晶体管电路，其具有输出端子，其一个连接到灯的放电电路中的SCR的栅极引线，另一个输出端子被布置成可连接到发光二极管 并且由此连接到用于选择相机的操作范围的电子转换开关的栅极引线，所述发光二极管被布置为从相机的外部可见，使得操作者立即知道 如果存储电容器电压达到令人满意的放电电平。
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公开(公告)号：US4390261A
公开(公告)日：1983-06-28
申请号：US300597
申请日：1981-09-09
申请人： Hiroshi Yamamoto , Masanori Uchidoi
发明人： Hiroshi Yamamoto , Masanori Uchidoi
CPC分类号： G03B17/425 , G03B15/05 , G03B7/0807 , G03B2215/0507
摘要： In the disclosed camera, which is operable with a rechargeable electronic flash and an automatic winding mechanism, a photographic mode selector is arranged to switch from a continuous photographic mode in which successive photographs are taken as long as the shutter button is depressed to a single photographic mode in which a single photograph is taken every time the shutter button is depressed, in response to the rechargeable electronic flash being set to an operative condition.
摘要翻译： 在所公开的可用可再充电电子闪光灯和自动上链机构操作的照相机中，照相模式选择器被设置为从连续照相模式切换，只要快门按钮被按压到单次拍摄，照相模式将拍摄连续照片 响应于可再充电电子闪光灯被设置为操作状态，在每次按下快门按钮时拍摄单张照片的模式。
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公开(公告)号：US4389111A
公开(公告)日：1983-06-21
申请号：US295361
申请日：1981-08-24
CPC分类号： G03B7/093 , G03B7/0807 , G03B7/26 , G03B9/08
摘要： A camera includes a shutter which is electromagnetically closed at the end of a given exposure time. Circuitry in the camera operates to prevent a prolonged opening of the shutter from occurring when the camera battery voltage drops below a satisfactory operating level during an exposure, wherein the shutter mechanism is forcibly recharged.
摘要翻译： 相机包括在给定曝光时间结束时电磁闭合的快门。 相机中的电路操作以防止在曝光期间相机电池电压降低到令人满意的操作水平以下时快门的长时间打开，其中快门机构被强制充电。
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10.发明授权Power source voltage checking device particularly for checking the voltage of a battery in a camera 失效电源电压检测装置，特别用于检查摄像机电池电压
公开(公告)号：US4376265A
公开(公告)日：1983-03-08
申请号：US185608
申请日：1980-09-09
IPC分类号： G01R19/165 , G01R31/36 , G03B7/26 , H02J7/00 , G01N27/42
CPC分类号： G01R19/16542
摘要： In the disclosed device, a signal forming circuit produces a signal having a frequency corresponding to the voltage of a power source. A level detector detects the level of the voltage of the power source and is arranged to produce a signal when the voltage of the power source drops below a predetermined level. A control circuit coupled to the signal forming circuit is arranged to change the frequency of the signal produced by the signal forming circuit in response to the signal produced by the detector. An indicator operates at the frequency of the signal produced by the signal forming circuit. In a specific embodiment, a detector detects whether the voltage of a battery is at and below a first level, between the first level and a second higher level, and at and higher than the second level. A signal former responds to the detector for producing a first signal having a frequency below a first frequency when the voltage is below the second level, a second signal having a frequency twice the first frequency when the voltage is at the second level, and a signal having a frequency higher than the frequency of the second signal when the voltage is above the second level. An indicator responds to the signal former to operate at the frequency of the signal former.
摘要翻译： 在所公开的装置中，信号形成电路产生具有对应于电源电压的频率的信号。 电平检测器检测电源电压的电平，并且被布置为当电源的电压下降到预定水平以下时产生信号。 耦合到信号形成电路的控制电路被布置成响应于由检测器产生的信号来改变由信号形成电路产生的信号的频率。 指示器以由信号形成电路产生的信号的频率工作。 在具体实施例中，检测器检测电池的电压是否处于第一电平和第一电平之间，第一电平和第二较高电平之间以及高于第二电平。 当电压低于第二电平时，信号发生器响应于检测器产生具有低于第一频率的频率的第一信号，当电压处于第二电平时具有频率为第一频率的第二信号，以及信号 当电压高于第二电平时，其频率高于第二信号的频率。 指示器响应于信号形成器以在信号发生器的频率下操作。
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