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公开(公告)号：US4945378A
公开(公告)日：1990-07-31
申请号：US290451
申请日：1988-12-27
申请人： Shinji Nagaoka , Yoichi Seki , Hiroyuki Saito , Michio Taniwaki
发明人： Shinji Nagaoka , Yoichi Seki , Hiroyuki Saito , Michio Taniwaki
CPC分类号： G03B7/099
摘要： A circuit for detecting back light comprises a time constant circuit including a capacitor selectively connectable in series with either a resistive element, or one of two CdS photoconductive elements used to measure the central and surrounding portions, respectively, of an object being photographed. Three switches separately conect the resistive element and the two photoconductive elements in series with the capacitor. A circuit generates pulses for a length of time governed by a time constant determined by the time constant circuit, and three separate counters store the pulses the number of which is determined by the time constant. An arithmetic circuit processes the pulses stored in the counters to determine the amount of back light present on the object.
摘要翻译： 用于检测背光的电路包括时间常数电路，时间常数电路包括可选择性地与电阻元件或两个CdS光导元件中的一个串联选择的电容器，所述电容元件分别用于测量被拍摄物体的中心部分和周围部分。 三个开关分别将电阻元件和两个光电元件串联连接到电容器。 电路产生的脉冲长度由时间常数电路确定的时间常数决定，三个独立的计数器存储由时间常数确定的脉冲数。 算术电路处理存储在计数器中的脉冲以确定物体上存在的背光的量。
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2.发明授权Integrated circuit with battery serving as power source having CMOS analog and digital circuits and regulated stepped up voltage source 失效具有电池的集成电路，作为具有CMOS模拟和数字电路的电源以及调节的升压电压源
公开(公告)号：US5107138A
公开(公告)日：1992-04-21
申请号：US335199
申请日：1989-04-07
申请人： Yoichi Seki , Hiroyuki Saito , Michio Taniwaki , Teruyo Hayakawa
发明人： Yoichi Seki , Hiroyuki Saito , Michio Taniwaki , Teruyo Hayakawa
IPC分类号： H01L27/06 , G04G19/02 , H01L21/822 , H01L21/8249 , H01L27/04 , H02M3/156
摘要： An integrated circuit comprises a logic circuit connectable to a battery power supply to energize the logic circuit. A converter generates a stepped up voltage supply from the battery power supply and an analog circuit is receptive of the stepped up voltage supply for controlling the operation of other circuitry. The analog circuit and the logic circuit comprise CMOS transistors integrated on the same chip.
摘要翻译： 集成电路包括可连接到电池电源的逻辑电路以激励逻辑电路。 A转换器从电池电源产生升压电压源，并且模拟电路接受升压电压以控制其它电路的操作。 模拟电路和逻辑电路包括集成在同一芯片上的CMOS晶体管。
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公开(公告)号：US4980545A
公开(公告)日：1990-12-25
申请号：US278825
申请日：1988-12-01
申请人： Yoichi Seki , Hiroyuki Saito , Michio Taniwaki
发明人： Yoichi Seki , Hiroyuki Saito , Michio Taniwaki
CPC分类号： G01J1/18 , G01J1/4214 , G01J2001/4426
摘要： A photometric circuit comprises a switching circuit which causes a photo conductive element which responds to the luminance of an object of measurement to be selectively connected with an oscillation circuit so that the photo conductive element functions as a frequency determining element and a frequency ratio calculating circuit which calculates a ratio of the oscillation frequency obtained when the photo conductive element is in connection with the oscillation circuit to the oscillation frequency obtained when the photo conductive element is not connected with the oscillation circuit. Thus, it is possible to reduce the required capacitance of the capacitor operating as a frequency determining element, lower the voltage required to drive the circuit and yet achieve high measuring accuracy.
摘要翻译： 光度测量电路包括：切换电路，其使得响应于测量对象的亮度的光导体元件选择性地与振荡电路连接，使得光导体元件用作频率确定元件和频率比计算电路，其中， 计算当光导体与振荡电路连接时获得的振荡频率与当光导体未与振荡电路连接时所获得的振荡频率的比。 因此，可以减小作为频率确定元件工作的电容器的所需电容，降低驱动电路所需的电压，并且实现高测量精度。
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公开(公告)号：US5097262A
公开(公告)日：1992-03-17
申请号：US72965
申请日：1987-07-14
申请人： Youichi Seki , Hiroyuki Saito , Michio Kawai , Michio Taniwaki
发明人： Youichi Seki , Hiroyuki Saito , Michio Kawai , Michio Taniwaki
CPC分类号： G02B7/32 , H03M1/0619 , H03M1/504
摘要： An analog-to-digital converter for a camera has a reference signal generating element, a measurement signal generating element, and pulse output means for generating pulses of pule durations corresponding respectively to signals from the generating elements. The generating elements are alternately selected to produce two pulse durations, and the ratio of these two durations is computed by pulse duration ratio computing means. Control information corresponding to the computed ratio is retrieved from memory means.
摘要翻译： 用于相机的模拟 - 数字转换器具有参考信号产生元件，测量信号产生元件和用于产生分别对应于来自发生元件的信号的脉冲持续时间的脉冲输出装置。 交替选择发生元件以产生两个脉冲持续时间，并且这两个持续时间的比率由脉冲持续时间比计算装置计算。 从存储器装置检索对应于计算出的比率的控制信息。
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公开(公告)号：US4831406A
公开(公告)日：1989-05-16
申请号：US170747
申请日：1988-03-21
摘要： A power circuit for a camera comprising a power activation means containing a release switch for activating the camera, a step-up means for starting to step up the voltage of a battery by the power activation means, a CPU which is driven by an output of the step-up means so as to control the operation of the camera and which has a reset terminal for stopping the operation, and a voltage detecting means for detecting the output voltage of the step-up means and for generating a detection signal when the voltage is lower than a set value which has previously been determined, the set value being set to correspond to the limiting operation voltage of the CPU and, when the output voltage of the step-up means is lower than the limiting operation voltage of the CPU, the CPU being reset and stopped to operate.
摘要翻译： 一种用于照相机的电源电路，包括：电源激活装置，其包含用于启动相机的释放开关;升压装置，用于通过电力激活装置开始升高电池的电压; CPU，由 所述升压装置用于控制所述摄像机的操作并具有用于停止所述操作的复位端子;以及电压检测装置，用于检测所述升压装置的输出电压，并且当所述电压 低于预先确定的设定值，将设定值设定为与CPU的限制动作电压对应，并且当升压装置的输出电压低于CPU的限制动作电压时， CPU被复位并停止运行。
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公开(公告)号：US4763155A
公开(公告)日：1988-08-09
申请号：US4140
申请日：1987-01-13
申请人： Hajime Oda , Hiroyuki Saito , Keiji Arai , Atsushi Misawa , Toshiya Tamura , Michio Taniwaki , Katsuhito Niwa
发明人： Hajime Oda , Hiroyuki Saito , Keiji Arai , Atsushi Misawa , Toshiya Tamura , Michio Taniwaki , Katsuhito Niwa
摘要： A camera has a shutter device driveable to undergo opening movement to open an aperture to effect exposure operation according to a given exposure value, and a motor actuatable to rotate at an unstable rotational speed for driving the shutter device. A detector operates after the motor starts rotating and before the shutter device undergoes its opening movement for detecting the rotational speed of the motor. A controller adjusts the shutter device in accordance with the detected rotational speed of the motor to thereby enable the shutter device to effect the exposure operation so as to accurately achieve the given exposure value.
摘要翻译： 照相机具有可驱动的开闭装置，以便根据给定的曝光值进行打开光圈以进行曝光操作，以及电动机可致动以以不稳定的转速旋转以驱动快门装置。 在电动机开始旋转之后并且在快门装置进行其打开运动以检测电动机的转速之前，检测器运行。 控制器根据检测到的电动机的转速来调节快门装置，从而使快门装置能够进行曝光操作，从而准确地达到给定的曝光值。
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公开(公告)号：US6144806A
公开(公告)日：2000-11-07
申请号：US135173
申请日：1993-10-12
申请人： Yoichi Seki , Hiroyuki Saito , Teruyo Hayakawa
发明人： Yoichi Seki , Hiroyuki Saito , Teruyo Hayakawa
CPC分类号： G03B17/30 , G03B17/00 , G03B7/24 , G03B2206/00 , G03B2206/008
摘要： A camera has a back cover movable between a closed state and an open state to enable a film case to be installed in and removed from the camera. A detector detects the transition of the cover between the closed state and the open state. A data register stores control data, and a control circuit receives the control data from the data register for controlling operation of the camera. The control data is transferred temporarily from the data register to an EEPROM when the back cover makes the transition from the closed state to the open state. The control data is then transferred back from the EEPROM to the data register when the back cover makes the transition from the open state to the closed state. By temporarily storing the control data in an EEPROM when the back cover is open, and transferring the control data from the EEPROM back to the data register when the back cover is closed, the adverse effects of static electricity, external noise or resetting of the control circuit are prevented from disrupting the operation of the camera.
摘要翻译： 相机具有可在关闭状态和打开状态之间移动的后盖，以使得胶卷盒能够安装在相机中并从相机中移除。 检测器检测盖子在关闭状态和打开状态之间的转变。 数据寄存器存储控制数据，并且控制电路从数据寄存器接收控制数据，以控制摄像机的操作。 当后盖从关闭状态转换到打开状态时，控制数据从数据寄存器临时传送到EEPROM。 然后，当后盖从打开状态转换到关闭状态时，控制数据从EEPROM传回数据寄存器。 当后盖打开时，通过将控制数据临时存储在EEPROM中，并且当后盖关闭时将控制数据从EEPROM传回数据寄存器，静电，外部噪声或控制复位的不利影响 防止电路中断相机的操作。
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公开(公告)号：US5365305A
公开(公告)日：1994-11-15
申请号：US23011
申请日：1993-02-25
申请人： Yoichi Seki , Hiroyuki Saito
发明人： Yoichi Seki , Hiroyuki Saito
CPC分类号： G03B17/18 , G03B7/26 , G03B2217/007
摘要： In a power supply control circuit for a display of a camera, when an operation signal is input, a control circuit determines that an operation mode exists and activates a boosting circuit and a voltage dividing circuit. The control circuit activates a power supply switching circuit to switch the power supply for a display unit driving circuit to the output of the voltage dividing circuit. In response to the input operation signal, the control circuit executes such processes as photographing, film rewinding and/or film loading by the operation of the rear lid switch, etc. Upon completion of the operation, the control circuit sets the mode to a waiting mode, and monitors the detection output of a battery voltage detecting circuit. If the voltage of the battery exceeds a predetermined voltage stored in the ROM in the control circuit, the control circuit determines that the battery voltage has been restored, and applies a power supply switching signal to a power supply switching circuit, so that the power supply for the display unit driving circuit is switched to the battery and the boosting circuit and the converting circuit are both deactivated
摘要翻译： 在用于显示摄像机的电源控制电路中，当输入操作信号时，控制电路确定存在操作模式并激活升压电路和分压电路。 控制电路启动电源切换电路，将显示单元驱动电路的电源切换到分压电路的输出。 响应于输入操作信号，控制电路通过后盖开关的操作等执行诸如拍摄，胶片倒带和/或胶卷装载之类的处理。在操作完成时，控制电路将模式设置为等待 模式，并监视电池电压检测电路的检测输出。 如果电池的电压超过控制电路中存储在ROM中的预定电压，则控制电路确定电池电压已经恢复，并且将电源切换信号施加到电源开关电路，使得电源 因为显示单元驱动电路切换到电池，并且升压电路和转换电路都被去激活
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公开(公告)号：US5327070A
公开(公告)日：1994-07-05
申请号：US874496
申请日：1992-04-27
申请人： Yoichi Seki , Shinichi Endo , Hiroyuki Saito , Akira Ito , Michio Kawai
发明人： Yoichi Seki , Shinichi Endo , Hiroyuki Saito , Akira Ito , Michio Kawai
CPC分类号： H05B33/0815 , H05B33/0818 , Y02B20/346
摘要： In a step-up circuit for causing the emission of light of a distance measuring light emitting element, the step-up circuit outputs a step-up voltage from one terminal of a step-up capacitor. A step-up voltage level changeover circuit applies a step-up voltage to the capacitor every time the distance measuring light emitting element emits light that is higher than the step-up voltage in the normal state. The number of parts is reduced by eliminating a separate capacitor for light emission, the space for the circuit is reduced by using the capacitor having a small capacity, the soldering steps for fabrication of the circuit are automated; and the costs for assembly are ameliorated owing to the automation.
摘要翻译： 在用于使距离测量发光元件发光的升压电路中，升压电路从升压电容器的一个端子输出升压电压。 每当距离测量发光元件发射高于正常状态下的升压电压的光时，升压电压电平转换电路将升压电压施加到电容器。 通过消除用于发光的单独的电容器来减少部件的数量，通过使用具有小容量的电容器来减少电路的空间，用于制造电路的焊接步骤是自动化的; 由于自动化，装配成本得到改善。
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公开(公告)号：US5444511A
公开(公告)日：1995-08-22
申请号：US144827
申请日：1993-10-29
申请人： Yoichi Seki , Hiroyuki Saito , Akira Ito , Isamu Ishii , Yoshiyuki Iwamatsu
发明人： Yoichi Seki , Hiroyuki Saito , Akira Ito , Isamu Ishii , Yoshiyuki Iwamatsu
CPC分类号： G02B7/32
摘要： A distance measuring device may be constructed utilizing a reduced number of components by calculating distance on the basis of the duration of an integration. Pulsed light is projected toward an object. A selecting circuit selectively outputs one of a pair of output voltages from two current-voltage converting circuits, each of which is connected to a position sensitive device which is configured to receive light reflected from the object. A variable-gain amplifying circuit is used for amplifying the selected output voltage and for producing an amplified output voltage. The output voltage of the amplifying circuit is integrated by an integrating circuit. Reference voltage generating circuitry generates two reference voltages having different levels and a comparing circuit compares the output voltage of the integrating circuit with one of a pair of reference voltages. Gain selecting circuitry is used for determining the gain of the variable-gain amplifying circuit on the basis of the output result of the comparing circuit. The distance to the object is determined in accordance with the duration of time that integration is performed by the integrating circuit until the integrated output voltage exceeds one of the reference voltages. Thus, distance may be determined in accordance with the magnitude of the integrated output voltage, the number of times integration is performed or the number of light projections performed by the device.
摘要翻译： 可以通过基于积分的持续时间计算距离来利用减少数量的部件来构造距离测量装置。 脉冲光被投射到物体上。 选择电路选择性地输出来自两个电流 - 电压转换电路的一对输出电压中的一个，每个电流电压转换电路连接到位置敏感器件，位置敏感器件被配置为接收从物体反射的光。 可变增益放大电路用于放大所选择的输出电压并产生放大的输出电压。 放大电路的输出电压由积分电路集成。 参考电压产生电路产生具有不同电平的两个参考电压，并且比较电路将积分电路的输出电压与一对参考电压中的一个进行比较。 增益选择电路用于根据比较电路的输出结果确定可变增益放大电路的增益。 根据由积分电路进行积分的持续时间直到积分输出电压超过基准电压之一来确定到物体的距离。 因此，可以根据集成输出电压的大小，执行积分的次数或由装置执行的光投影的数量来确定距离。
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