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    • 82. 发明授权
    • Switching power source apparatus
    • 开关电源装置
    • US06324081B1
    • 2001-11-27
    • US09693124
    • 2000-10-20
    • Hiroshi SakamotoKenji Iwai
    • Hiroshi SakamotoKenji Iwai
    • H02M3335
    • H02M3/33561H04N3/185Y02B70/1433
    • A switching power source apparatus reduces power loss and improves conversion efficiency of a switching power source part by rectifying and smoothing a commercially available alternating power source supplied to an oscillation drive circuit and a switching circuit part that constitutes a half-bridge circuit. An output of the half-bridge circuit is grounded via a resonance capacitor, a choke coil, and a primary winding of an insulated type converter transformer. This converter transformer has a secondary winding for obtaining a +B voltage and high-voltage windings for obtaining a high-level output voltage. Further, fluctuation in the voltage of the high-level output voltage is supplied to the oscillation drive circuit via resistors, a control circuit, and a photo-coupler, whereby the switching circuit part is controlled. The secondary winding is connected in series to a saturable reactor, so that by controlling the inductance of this saturable reactor, the +B voltage taken out from the secondary winding is controlled.
    • 开关电源装置通过对提供给振荡驱动电路的商用交流电源和构成半桥电路的开关电路部分进行整流和平滑来降低功率损耗并提高开关电源部分的转换效率。 半桥电路的输出通过谐振电容器,扼流线圈和绝缘型变流器变压器的初级绕组接地。 该转换器变压器具有用于获得+ B电压和高压绕组以获得高电平输出电压的次级绕组。 此外,通过电阻器,控制电路和光电耦合器向振荡驱动电路提供高电平输出电压的电压波动,从而控制开关电路部分。 次级绕组与可饱和电抗器串联连接,通过控制该可饱和电抗器的电感,控制从次级绕组取出的+ B电压。
    • 83. 发明授权
    • Magnetic-coupling multivibrator
    • 磁耦合多谐振荡器
    • US5986908A
    • 1999-11-16
    • US67424
    • 1998-04-28
    • Katsunori SugimoriHiroshi SakamotoKoosuke Harada
    • Katsunori SugimoriHiroshi SakamotoKoosuke Harada
    • H02J7/00H03K3/30H02M3/18
    • H02M7/53832
    • A magnetic-coupling multivibrator has a rectification circuit including first and second smoothing capacitors connected at a capacitor common junction, the first smoothing capacitor providing a high potential output, the second smoothing capacitor providing a low potential output. A switching series circuit has first and second switching elements connected in series at a common switching junction, the switching series circuit being connected in parallel to the smoothing capacitors. A first saturable transformer has a first saturation coil, a first control coil and a first gate drive coil, and a second saturable transformer has a second saturation coil, a second control coil and a second gate drive coil. A first gate control circuit interfaces the first gate drive coil with the first switching element to effect turn on and off and a second gate control circuit for interfacing the second gate drive coil with the second switching element to effect turn on and off alternately with turn on and turn off of the first switching element to effect continuous oscillation. A current source for driving the first and second control coils to control saturation of the first saturable transformer and the second saturable transformer to effect control of a frequency of the continuous oscillation.
    • 磁耦合多谐振荡器具有整流电路,该整流电路包括连接在电容器公共端处的第一和第二平滑电容器,第一平滑电容器提供高电位输出,第二平滑电容器提供低电位输出。 开关串联电路具有在公共开关结上串联连接的第一和第二开关元件,开关串联电路并联连接到平滑电容器。 第一可饱和变压器具有第一饱和线圈,第一控制线圈和第一栅极驱动线圈,第二可饱和变压器具有第二饱和线圈,第二控制线圈和第二栅极驱动线圈。 第一栅极控制电路将第一栅极驱动线圈与第一开关元件接合以实现导通和截止;以及第二栅极控制电路,用于将第二栅极驱动线圈与第二开关元件接合以交替地导通和断开 并关闭第一开关元件以实现连续振荡。 用于驱动第一和第二控制线圈以控制第一可饱和变压器和第二饱和变压器的饱和的电流源,以实现连续振荡频率的控制。
    • 86. 发明授权
    • Electronic flashing device
    • 电子闪光装置
    • US5752102A
    • 1998-05-12
    • US488463
    • 1995-06-07
    • Hideki MatsuiHiroshi SakamotoRyotaro TakayanagiNobuyoshi Hagiuda
    • Hideki MatsuiHiroshi SakamotoRyotaro TakayanagiNobuyoshi Hagiuda
    • H05B41/32G03B15/05
    • H05B41/32
    • An electronic flashing device includes a booster circuit for boosting a power supply voltage to a predetermined voltage, a main capacitor charged via the booster circuit, a light emission tube for emitting light according to a charge charged on the main capacitor, a semiconductor element connected in series with the light emission tube, and including a thyristor element and a MOSFET which are cascade-connected to each other, and are formed on a single chip, a trigger circuit for applying a trigger voltage to the light emission tube in response to a light emission start signal for causing the light emission tube to start light emission, a gate voltage applying circuit for applying a voltage to the gate of the semiconductor element in response to the light emission start signal, and a gate voltage disappearing circuit for causing the voltage at the gate of the semiconductor element to disappear in response to a light emission stop signal for causing the light emission tube to stop light emission. A series circuit of the light emission tube and the semiconductor element is connected in parallel with the main capacitor.
    • 电子闪光装置包括用于将电源电压升压到预定电压的升压电路,经由升压电路充电的主电容器,用于根据在主电容器上充电的电荷发光的发光管,连接到 与发光管串联,并且包括彼此串联连接的晶闸管元件和MOSFET,并且形成在单个芯片上,用于响应于光而向发光管施加触发电压的触发电路 用于使发光管开始发光的发光开始信号,用于响应于发光开始信号向半导体元件的栅极施加电压的栅极电压施加电路,以及用于使电压在 半导体元件的栅极响应于用于使发光管停止光的发光停止信号而消失 排放。 发光管和半导体元件的串联电路与主电容器并联连接。
    • 87. 发明授权
    • Wireless light-amplifying strobe system and strobe device usable with
the system
    • 无线光放大选通系统和与该系统可用的选通设备
    • US5724620A
    • 1998-03-03
    • US594370
    • 1996-01-30
    • Nobuyoshi HagiudaHideki MatsuiRyotaro TakayanagiHiroshi Sakamoto
    • Nobuyoshi HagiudaHideki MatsuiRyotaro TakayanagiHiroshi Sakamoto
    • G03B15/05H05B41/32G03B15/03
    • G03B15/05G03B2215/0557
    • A wireless light amplifying strobe system appropriately regulates the commencement and cessation of each strobe's light emission to enable the radiation intensity of the light emissions to be accurately set. For example, a wireless light-amplifying system has a strobe that is attached to a camera (the primary strobe) and a strobe that is separated from the first strobe (the auxiliary strobe). The primary strobe repeatedly emits a low-intensity flash of light, and the auxiliary strobe detects the emission of light from the primary strobe and repeatedly emits a fixed, low-intensity flash of light upon each emission of light from the primary strobe. The camera measures the light that is reflected from the subject being photographed, which is illuminated by both strobes, with a photometer circuit that passes through the photographic lens. When the proper exposure has been reached, the primary strobe's light emission ceases. When the primary strobe stops emitting light, the auxiliary strobe no longer detects the emission of light from the primary strobe, and automatically ceases its own light emission.
    • 无线光放大选通系统适当地调节每个闪光灯的发光的开始和停止,以使得能够准确地设定光发射的辐射强度。 例如,无线光放大系统具有连接到照相机(主闪光灯)的闪光灯和与第一闪光灯(辅助闪光灯)分离的闪光灯。 主闪光灯重复地发射低强度闪光,并且辅助闪光灯检测来自主闪光灯的光的发射,并且在来自主闪光灯的每次发射光时重复地发射固定的低强度闪光。 照相机用通过摄影镜头的光度计电路来测量被两个闪光灯照明的拍摄对象反射的光。 当达到适当的曝光时,主闪光灯的发光停止。 当主闪光灯停止发光时,辅助闪光灯不再检测来自主闪光灯的光的发射,并自动停止其自身的发光。
    • 89. 发明授权
    • Electronic flash apparatus of a camera
    • 相机的电子闪光灯装置
    • US5579068A
    • 1996-11-26
    • US524425
    • 1995-09-06
    • Hideki MatsuiNobuyoshi HagiudaRyotaro TakayanagiHiroshi Sakamoto
    • Hideki MatsuiNobuyoshi HagiudaRyotaro TakayanagiHiroshi Sakamoto
    • G03B9/70G03B15/05H05B41/32
    • H05B41/325G03B15/05G03B9/70G03B2215/05
    • Disclosed is an electronic flash apparatus of a camera incorporating a focal plane shutter. The apparatus is constructed of a capacitor for storing an electric charge, a flashtube for irradiating a subject with a flash of light by the electric charge stored in the capacitor and a setting unit capable of setting any of a signal flash mode in which the flashtube effects a single flash and a high-speed mode in which the flashtube effects high-speed repetitive flash. The apparatus is further constructed of a voltage setting unit for setting a first voltage as an energizing voltage when the single flash mode is set and setting a second voltage higher than the first voltage as an energizing voltage when the high-speed mode is set and an energizing unit for monitoring a voltage when the capacitor stores the electric charge and energizing a ready light just when the voltage in the storage of the electric charge exceeds the set energizing voltage.
    • 公开了一种包括焦平面快门的相机的电子闪光装置。 该装置由用于存储电荷的电容器构成,用于通过存储在电容器中的电荷用闪光照射对象的闪光管,以及能够设置闪光管效应的任何信号闪光模式的设置单元 一个闪光灯和一个高速模式,其中闪光灯管可以实现高速重复闪光。 该装置进一步由电压设定单元构成,当设定单次闪光模式时,将第一电压设定为通电电压,将高于第一电压的第二电压设定为高电压模式时的通电电压, 激励单元,用于当电容器存储电荷时监视电压,并且仅在电荷的存储中的电压超过设定的通电电压时激励就绪光。
    • 90. 发明授权
    • Automatic light emission control system for electronic flash
    • 电子闪光灯自动发光控制系统
    • US5504554A
    • 1996-04-02
    • US162917
    • 1993-12-08
    • Hiroshi Sakamoto
    • Hiroshi Sakamoto
    • G03B7/16G03B7/28G03B15/05G03B7/00
    • G03B7/16G03B7/28G03B2215/0557
    • An automatic light emission control system separately compensates the flashlight emission of each of a plurality of electronic flashes. A camera generates a first signal in synchronism with the opening of a shutter and generates a second signal when a TTL measured value of the reflected light from an object reaches a reference exposure set lower than a correct exposure. Each electronic flash connected to the camera includes an electronic flash unit, a photometry circuit for measuring its flashlight emission, and a compensation signal adjuster. The flashlight emission of the flash unit is initiated in response to the first signal and interrupted in response to the interrupt signal generated when an integrated emission amount measured by the photometry circuit reaches a desired flashlight emission amount determined in accordance with an intergrated emission amount measured up to the arrival of the second signal and the compensation signal amount.
    • 自动发光控制系统分别补偿多个电子闪光灯中的每一个的手电筒发射。 摄像机产生与快门打开同步的第一信号,并且当来自对象的反射光的TTL测量值达到低于正确曝光的参考曝光时,产生第二信号。 连接到相机的每个电子闪光灯包括电子闪光单元,用于测量其手电筒发射的测光电路和补偿信号调节器。 闪光单元的手电筒发射响应于第一信号而启动,并且响应于当测光电路测量的综合发射量达到根据测量的整合发射量确定的所需手电筒发射量时产生的中断信号而中断 到第二信号和补偿信号量的到来。