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

IPC分类号： H01L33/00 ,  G02B7/32 ,  H05B33/08 ,  G03B13/36 ,  G05F1/62

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。

公开(公告)号：US5610680A

公开(公告)日：1997-03-11

申请号：US449816

申请日：1995-05-24

申请人： Yoichi Seki ,  Michio Kawai ,  Hiroyuki Saito ,  Akira Ito

发明人： Yoichi Seki ,  Michio Kawai ,  Hiroyuki Saito ,  Akira Ito

IPC分类号： G01C3/06 ,  G01S7/491 ,  G01S17/46 ,  G02B7/32 ,  G03B13/36 ,  G03B3/00

CPC分类号： G02B7/32 ,  G01S17/46 ,  G01S7/4912 ,  G01S7/4918

摘要： A distance measuring apparatus for a camera comprises a light projecting device for projecting light to an object to be photographed, a light receiving circuit for receiving light projected by the light projecting device and reflected by the object to be photographed and for converting the reflected light into first and second output signals, a first selecting device for selecting the first output signal, and a second selecting device for selecting one of the first and second output signals. A first signal processing circuit is connected to the first selecting device for processing the output signal selected by the first selecting device. A second signal processing circuit is connected to the second selecting device for processing the output signal selected by the second selecting device. A first memory stores output signals of the first and second signal processing circuits, the output signals being generated upon operation of the light projecting device when the first selecting device selects the first output signal and the second selecting device selects the second output signal. A second memory stores output signals of the first and second signal processing circuits, the output signals being generated upon operation of the light projecting device when the first and the second selecting devices both select the first output signal. A calculation circuit calculates a distance to the object to be photographed by adjusting an output of the first memory by an output of the second memory.

摘要翻译： 照相机的距离测量装置包括用于将光投射到被拍摄物体的光投射装置，用于接收由投光装置投影并被被拍摄物体反射的光并将反射光转换成 第一和第二输出信号，用于选择第一输出信号的第一选择装置和用于选择第一和第二输出信号之一的第二选择装置。 第一信号处理电路连接到第一选择装置，用于处理由第一选择装置选择的输出信号。 第二信号处理电路连接到第二选择装置，用于处理由第二选择装置选择的输出信号。 第一存储器存储第一和第二信号处理电路的输出信号，当第一选择装置选择第一输出信号并且第二选择装置选择第二输出信号时，输出信号是在投光装置工作时产生的。 第二存储器存储第一和第二信号处理电路的输出信号，当第一和第二选择装置都选择第一输出信号时，输出信号是在光投射装置的工作时产生的。 计算电路通过第二存储器的输出调节第一存储器的输出来计算到要拍摄对象的距离。

公开(公告)号：US5614984A

公开(公告)日：1997-03-25

申请号：US505518

申请日：1995-04-19

申请人： Yoichi Seki ,  Tomihiko Aoyama ,  Michio Kawai ,  Akira Ito

发明人： Yoichi Seki ,  Tomihiko Aoyama ,  Michio Kawai ,  Akira Ito

IPC分类号： G01C3/06 ,  G01S17/46 ,  G02B7/32 ,  H01L21/68 ,  G03B13/36

CPC分类号： G02B7/32 ,  G01S17/46

摘要： A distance measuring device for ensuring accuracy of the positional relationship between the optical axis of a light-receiving lens and the optical center of a light-receiving element obtains distance information data by measuring the distance to a target plate which is 1 meter from the distance measuring device. If the distance information is not smaller than 1.625 meter, a switch is connected to one pair of terminals and the difference between reference output data stored in a control circuit and output data of an AF-IC obtained when the distance to the target plate is measured with the switch connected to the pair of terminals is calculated and stored in a memory circuit. When the value of the distance information data is not greater than 0.375 meter, the switch is connected to another pair of terminals, and output deviation data is stored in the memory circuit 11 in the same way. When the value of the distance information value is smaller than 1.625 meter and greater than 0.375 meter, the switch is connected to a further pair of terminals, and output deviation data is stored in the memory circuit in the same way.

摘要翻译： 用于确保光接收透镜的光轴与光接收元件的光中心之间的位置关系的精确度的距离测量装置通过测量距离距离为1米的目标板的距离来获得距离信息数据 测量工具。 如果距离信息不小于1.625米，则开关连接到一对端子，并且存储在控制电路中的参考输出数据与当到目标板的距离被测量时获得的AF-IC的输出数据之间的差异 连接到一对终端的开关被计算并存储在存储器电路中。 当距离信息数据的值不大于0.375米时，开关连接到另一对端子，并且输出偏差数据以相同的方式存储在存储器电路11中。 当距离信息值小于1.625米且大于0.375米时，开关与另一对端子连接，输出偏差数据以相同的方式存储在存储器电路中。

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

IPC分类号： G02B7/32 ,  G03B13/36

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。

公开(公告)号：US5621347A

公开(公告)日：1997-04-15

申请号：US288485

申请日：1994-08-10

申请人： Hiroyuki Saito ,  Yoichi Seki ,  Akira Ito

发明人： Hiroyuki Saito ,  Yoichi Seki ,  Akira Ito

IPC分类号： G03B7/08 ,  H01L21/822 ,  H01L27/04 ,  G05F1/10 ,  G05F3/02

CPC分类号： G03B7/0807

摘要： In order to reduce noise in a controlling circuit including digital circuitry and analog circuitry constructed together on a single CMOS integrated circuit, a regulator is constructed as part of the integrated circuit. A power supply is directly connected to the digital circuitry, and a voltage output of the regulator is supplied to the analog circuitry. The output state of the regulator may be controlled by a switch. Degradation of the performance characteristics of the analog circuitry while the digital circuitry is being operated can be prevented by electrically isolating the power supply to the digital circuitry from the power supply to the analog circuitry. Since the regulator is built into the integrated circuit, the number of externally provided components is thereby reduced, further contributing to the downsizing of an electronic device such as a camera. Furthermore, even when the power supply of the digital circuitry fluctuates greatly, the effects on the analog circuitry are minimized.

摘要翻译： 为了减少包括数字电路和在单个CMOS集成电路上一起构成的模拟电路的控制电路中的噪声，调节器被构造为集成电路的一部分。 电源直接连接到数字电路，并且调节器的电压输出被提供给模拟电路。 调节器的输出状态可以由开关控制。 可以通过将数字电路的电源与模拟电路的电源电隔离来防止数字电路正在运行时模拟电路的性能特性的降低。 由于调节器内置在集成电路中，因此减少了外部提供的部件的数量，这进一步有助于诸如照相机的电子设备的小型化。 此外，即使当数字电路的电源波动很大时，对模拟电路的影响也被最小化。

公开(公告)号：US5461451A

公开(公告)日：1995-10-24

申请号：US129232

申请日：1993-09-29

申请人： Yoichi Seki ,  Kazuo Akimoto ,  Akira Ito ,  Hironobu Amemiya

发明人： Yoichi Seki ,  Kazuo Akimoto ,  Akira Ito ,  Hironobu Amemiya

IPC分类号： G01P11/00 ,  G01C3/06 ,  G01S7/481 ,  G02B7/28 ,  G02B7/32 ,  G03B13/36 ,  G03B17/00

CPC分类号： G03B17/00 ,  G02B7/28 ,  G03B2217/002

摘要： A distance measuring device for an automatic focusing camera includes a light receiving lens and a multilayer printed circuit board mounted on a holder. A potting frame is provided on the lens-facing side surface of the printed circuit board. An optical sensor and an IC are both mounted within a space enclosed by the potting frame and simultaneously sealed by a protecting resin. Resistors and capacitors of a distance measuring circuit are mounted on the opposite surface of the printed circuit board. The two surfaces of the printed circuit board are connected to each other via a through hole to construct the distance measuring circuit. The protecting resin transmits light having specified wavelengths. The light reflected from a subject to be photographed is received by the optical sensor after passing through the protecting resin, and the distance to the subject is calculated on the basis of the received light data.

摘要翻译： 用于自动聚焦照相机的距离测量装置包括光接收透镜和安装在支架上的多层印刷电路板。 在印刷电路板的面向镜片的侧表面上设置灌封框架。 光学传感器和IC都安装在由灌封框架封闭的空间内，同时由保护树脂密封。 距离测量电路的电阻器和电容器安装在印刷电路板的相对表面上。 印刷电路板的两个表面通过通孔相互连接构成测距电路。 保护树脂透射具有特定波长的光。 由经过保护树脂的光学传感器接收被摄体的反射光，根据接收到的光数据计算与被摄体的距离。

公开(公告)号：US5742524A

公开(公告)日：1998-04-21

申请号：US653431

申请日：1996-05-24

申请人： Akira Ito ,  Hiroyuki Saito ,  Teruyo Miyata

发明人： Akira Ito ,  Hiroyuki Saito ,  Teruyo Miyata

IPC分类号： G01C3/06 ,  G01S7/486 ,  G01S17/10 ,  G02B7/32 ,  G03B13/36

CPC分类号： G01S7/486 ,  G01S17/10 ,  G02B7/32

摘要： In order to improve the accuracy and reliability of a distance measurement device of the light-projecting type, the device is provided with a reference voltage generator for generating a reference voltage having a level dependent upon whether or not a light is being projected. The distance measurement device includes a light projecting circuit for projecting pulsed light onto an object, a light receiving circuit for receiving the light projected by the light projecting circuit and reflected by the object, current-to-voltage conversion circuitry for converting a current output by the light receiving circuit into a corresponding voltage, amplifier circuitry for amplifying the output signals of the current-to-voltage conversion circuits, an integration circuit for integrating the output signal of the amplifier circuit, a level judgement circuit for judging the level of the output signal of the integration circuit by comparing it with a reference voltage, and an arithmetic circuit for switching the reference voltage depending on whether the light-projecting circuit is projecting light and for calculating the distance of the object based on the output of the level judgement circuit.

摘要翻译： 为了提高投光型的距离测量装置的精度和可靠性，该装置设置有参考电压发生器，用于产生具有取决于是否投射光的电平的参考电压。 距离测量装置包括用于将脉冲光投射到物体上的光投射电路，用于接收由投光电路投影并被物体反射的光的光接收电路，用于将电流输出转换为电流输出的电流 - 电压转换电路 光接收电路成为相应的电压，用于放大电流 - 电压转换电路的输出信号的放大器电路，用于积分放大器电路的输出信号的积分电路，用于判断输出电平的电平判断电路 通过将积分电路与参考电压进行比较来产生积分电路的信号;以及运算电路，用于根据投光电路是否投射光来切换参考电压，并根据电平判断电路的输出来计算物体的距离 。

公开(公告)号：US5572012A

公开(公告)日：1996-11-05

申请号：US260353

申请日：1994-06-15

申请人： Hiroyuki Saito ,  Akira Ito

发明人： Hiroyuki Saito ,  Akira Ito

IPC分类号： G01S7/491 ,  G01S17/08 ,  G01S17/46 ,  G02B7/32 ,  G03B13/36

CPC分类号： G02B7/32 ,  G01S17/46 ,  G01S7/4818 ,  G01S17/08 ,  G01S7/491

摘要： A distance measuring device for a camera projects a pulsed light beam toward a subject and converts the reflected light from the subject to a voltage which is integrated by an integrating circuit. The output of the integrating circuit is compared with a first reference voltage until the level thereof exceeds the first reference voltage, and then the output of the integrated circuit is compared with a second reference voltage until the level thereof reaches the second reference voltage. The distance to the subject is calculated depending on the number of times the integration operation is performed.

摘要翻译： 用于照相机的距离测量装置将脉冲光束投射到被摄体，并将来自被摄体的反射光转换成由积分电路积分的电压。 将积分电路的输出与第一参考电压进行比较，直到其电平超过第一参考电压，然后将集成电路的输出与第二参考电压进行比较，直到其电平达到第二参考电压。 根据执行积分操作的次数计算与被摄体的距离。

公开(公告)号：US5442260A

公开(公告)日：1995-08-15

申请号：US221057

申请日：1994-03-30

申请人： Hiroyuki Saito ,  Akira Ito

发明人： Hiroyuki Saito ,  Akira Ito

IPC分类号： G02B7/32 ,  G01C3/06 ,  G03B7/26 ,  G03B13/36 ,  H01L33/00 ,  H05B33/08 ,  H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0803 ,  H05B33/0818

摘要： A light-emitting element drive circuit for a camera comprises a diode and a light-emitting element connected in series with each other between a power source and ground, a first switching element switchable between on and off states for driving the light-emitting element, second and third switching elements connected in series with each other between the power source and ground, and a capacitor connected between a junction point of the diode and light-emitting element and a junction point of the second and third switching elements. The second and third switching elements also constitute switching elements of a drive circuit for driving a DC motor, whereby the light-emitting element can be driven with a voltage which is approximately twice as high as the power source voltage. Since the light-emitting element is driven by a capacitor charge/discharge operation instead of using a boosted power source, the consumption of current is reduced and the light-emitting period is shortened.

摘要翻译： 一种用于照相机的发光元件驱动电路，包括在电源与地之间彼此串联连接的二极管和发光元件，用于驱动发光元件的能够切换为导通和截止状态的第一开关元件， 在电源和地之间彼此串联连接的第二和第三开关元件，以及连接在二极管和发光元件的连接点与第二和第三开关元件的连接点之间的电容器。 第二和第三开关元件还构成用于驱动DC电动机的驱动电路的开关元件，由此可以以大约是电源电压的两倍的电压来驱动发光元件。 由于发光元件由电容器充放电操作驱动，而不是使用升压电源，因此电流消耗减少并且发光周期缩短。

公开(公告)号：US09774483B2

公开(公告)日：2017-09-26

申请号：US13323374

申请日：2011-12-12

申请人： Akira Ito

发明人： Akira Ito

IPC分类号： H04L27/26 ,  H04W72/04 ,  H04W76/04

CPC分类号： H04L27/2647 ,  H04W72/042 ,  H04W76/20 ,  H04W76/28

摘要： A communication apparatus includes a receiver that can receive data that has been divided among multiple communication carriers and transmitted, and that has multiple communication modes, each using a different number of communication carriers for reception; an acquirer that acquires information indicating a change in the communication volume of the receiver; and a switch that switches the communication mode of the receiver, based on the information acquired by the acquirer.