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81. 发明授权

US4360255A Method and apparatus for transmission of information in a photographic camera 失效
标题翻译：在照相机中传输信息的方法和装置
公开(公告)号：US4360255A
公开(公告)日：1982-11-23
申请号：US286332
申请日：1981-07-23
申请人： Masahiro Kawasaki
发明人： Masahiro Kawasaki
IPC分类号： G03B7/20 , H04N5/232
CPC分类号： H04N5/23209 , G03B7/20
摘要： A photographic camera has a camera body, an interchangeable lens assembly mounted on the camera body, and an automatic exposure control mechanism located in the camera body. The mechanism responds to a first binary signal representative of a maximum lens aperture value in binary code and a second binary signal representative of a minimum lens aperture value in binary code. The first signal has a given number of binary bits. The second signal is generated in the lens assembly. A third signal representative of the arithmetic difference between the first and second signals is also generated in the lens assembly. The third signal has a number of binary bits fewer than the given number. The second and third signals generated in the lens assembly are transmitted to the camera body. In the camera body, the second signal is applied to the mechanism and the transmitted second and third signals are arithmetically added to derive the first signal, which is applied to the mechanism.
摘要翻译：照相机具有照相机主体，安装在照相机主体上的可互换镜头组件和位于照相机主体中的自动曝光控制机构。该机构响应表示二进制码中的最大透镜孔径值的第一二进制信号和表示二进制码中最小透镜孔径值的第二二进制信号。第一个信号具有给定数量的二进制位。在镜头组件中产生第二信号。表示第一和第二信号之间的算术差异的第三信号也在透镜组件中产生。第三个信号具有少于给定数量的二进制位数。在镜头组件中产生的第二和第三信号被传送到照相机主体。在相机机身中，第二信号被施加到机构，并且发送的第二和第三信号被算术地相加以导出应用于该机构的第一信号。

82. 发明授权

US4285586A Camera controller for flashgun operation 失效
标题翻译：相机控制器用于闪光灯操作
公开(公告)号：US4285586A
公开(公告)日：1981-08-25
申请号：US63305
申请日：1979-08-02
申请人： Masahiro Kawasaki , Sinji Urata
发明人： Masahiro Kawasaki , Sinji Urata
IPC分类号： G03B15/05 , G03B7/083 , G03B19/02 , H05B41/32 , G03B15/03 , G03B17/18
CPC分类号： G03B7/083 , G03B7/16
摘要： A device for controlling a camera according to whether or not a flashgun is mounted on the camera and whether or not the flashgun is charged. The camera operation may be an electrically controlling an automatic shutter operation or a manual shutter operation. An input terminal transmits a charge signal of the flashgun and a detection switch determines whether or not the flashgun is mounted on the camera. In a first state in which a flashgun with a charge signal terminal is mounted on the camera but the flashgun is not charged yet, the detection switch is turned on or off. A voltage lower than a predetermined value is applied to the input terminal, and an ordinary automatic shutter control or an ordinary manual shutter control is obtained according to information provided by the detection switch and information provided by the input terminal. In a second state in which the flashgun mounted on the camera has been charged, the detection switch is turned on or off, a voltage higher than said predetermined value is applied to the input terminal, and a flash synchronization shutter control is obtained according to information provided by the detection switch and information provided by the input terminal. In a third state in which a flashgun having no charge signal terminal is mounted on the camera, the detection switch is merely turned on or off, the input terminal is in open state, and the X shutter control is obtained according only to information provided by the detection switch.
摘要翻译：根据闪光灯是否安装在相机上以及闪光灯是否被充电来控制相机的装置。相机操作可以是电控制自动快门操作或手动快门操作。输入端子发送闪光灯的充电信号，并且检测开关确定闪光灯是否安装在相机上。在具有充电信号端子的闪光灯安装在照相机上但闪光灯尚未充电的第一状态下，检测开关被打开或关闭。将低于预定值的电压施加到输入端子，并且根据检测开关提供的信息和由输入端子提供的信息获得普通的自动快门控制或普通手动快门控制。在安装在照相机上的闪光灯已被充电的第二状态下，检测开关被接通或关闭，高于所述预定值的电压被施加到输入端子，并且根据信息获得闪光同步快门控制由检测开关提供并由输入端提供的信息。在没有充电信号端子的闪光枪安装在相机上的第三状态下，检测开关仅被打开或关闭，输入端处于打开状态，并且仅根据由检测开关。

83. 发明授权

US4126873A Control circuit for the shutter holding magnet of a camera 失效
标题翻译：照相机快门保持磁铁的控制电路
公开(公告)号：US4126873A
公开(公告)日：1978-11-21
申请号：US686442
申请日：1976-05-14
申请人： Fumio Urano , Masahiro Kawasaki
发明人： Fumio Urano , Masahiro Kawasaki
IPC分类号： G03B7/26 , G03B7/083 , G03B17/18 , G03B7/08
CPC分类号： G03B7/083
摘要： A shutter release circuit for a camera is disclosed having the capability of deenergizing the shutter holding magnet when the power source voltage drops below the value capable of sustaining normal operation of the photometric and operational circuit.
摘要翻译：公开了一种用于相机的快门释放电路，其具有当电源电压低于能够维持测光和操作电路的正常操作的值时使快门保持磁体断电的能力。

84. 发明授权

US4114176A Weak camera battery warning circuit 失效
标题翻译：弱相机电池警告电路
公开(公告)号：US4114176A
公开(公告)日：1978-09-12
申请号：US828689
申请日：1977-08-29
申请人： Masahiro Kawasaki
发明人： Masahiro Kawasaki
IPC分类号： G03B7/26 , G03B17/18 , G03B43/00 , G03B7/00 , G03B17/00
CPC分类号： G03B7/26 , G03B43/00
摘要： A weak camera battery condition is sensed by a transistor 19 whose conduction is controlled by a voltage divider 20, 21 connected across the battery 22, and in response thereto:(a) a transistor 4 is rendered conductive to continuously energize the shutter control magnet 3 which holds the shutter open, once released, and prevents any further film advance,(b) a transistor 9 is rendered conductive whereby the shutter speed display meter 8 indicates an extreme or abnormal value, and(c) a transistor 14 is rendered non-conductive whereby an LED 12 is not illuminated when a battery test switch 11 is closed.

85. 发明授权

US4097877A Dual-function variable resistor in automatic/manual camera shutter control circuit 失效
标题翻译：自动/手动相机快门控制电路中的双功能可变电阻
公开(公告)号：US4097877A
公开(公告)日：1978-06-27
申请号：US740326
申请日：1976-11-09
申请人： Masahiro Kawasaki
发明人： Masahiro Kawasaki
IPC分类号： G03B7/01 , G03B7/083 , G03B9/62 , G03B7/08 , G03B7/00
CPC分类号： G03B7/083
摘要： A shutter control circuit for a single lens reflex camera includes a capacitor 8 for storing a voltage proportional to the measured object brightness value through a first switch 7, a second switch 14 for selecting the automatic or manual mode, and a variable resistor 12 having two sliding contact terminals A and B coupled to a third switch 11 controlled by the position of the reflex mirror 26. In the automatic mode one of the sliding contact terminals B is set to the difference between the f-stop and film sensitivity values, which influences the capacitor charge, which in turn controls the exposure time through a first position of the selecting switch. In the manual mode the other sliding contact terminal A directly controls the exposure time through a second position of the selecting switch.
摘要翻译：用于单镜头反射照相机的快门控制电路包括：电容器8，用于通过第一开关7存储与测量对象亮度值成比例的电压;用于选择自动或手动模式的第二开关14;以及具有两个滑动接触端子A和B耦合到由反射镜26的位置控制的第三开关11.在自动模式下，滑动接触端子B之一被设置为f-停止和膜敏感度值之间的差异，这影响电容器充电，其继而通过选择开关的第一位置来控制曝光时间。在手动模式中，另一滑动接触端子A直接通过选择开关的第二位置控制曝光时间。

86. 发明授权

US4096494A Shutter speed indicator device 失效
标题翻译：快门速度指示装置
公开(公告)号：US4096494A
公开(公告)日：1978-06-20
申请号：US682868
申请日：1976-05-03
申请人： Masahiro Kawasaki , Eiichi Tano
发明人： Masahiro Kawasaki , Eiichi Tano
IPC分类号： G03B17/18 , G03B17/20
CPC分类号： G03B17/20
摘要： In a camera, a numerical indication of the shutter speed is displayed thru the viewfinder. Numerals corresponding to the several shutter speeds are arranged to be illuminated, and therefore visible, by light emitting diodes associated therewith. The array of light emitting diodes have their cathode and anode terminals coupled together in groups arranged to reduce the total number of external connections to the diode array. The shutter speed is converted to a digital value which is applied to a decoder. The decoder energizes the external terminals of the diode array to selectively energize only one diode, corresponding to the shutter speed.
摘要翻译：在相机中，通过取景器显示快门速度的数字指示。对应于几个快门速度的数字被布置为通过与其相关联的发光二极管照明并因此可见。发光二极管阵列的阴极和阳极端子以组合的方式组合在一起，以减少与二极管阵列的外部连接的总数。将快门速度转换为应用于解码器的数字值。解码器激励二极管阵列的外部端子，以选择性地激励对应于快门速度的一个二极管。

87. 发明授权

US4092653A Mirror movement disable circuit for LED display in light finder of SLR camera 失效
标题翻译：用于单反相机照明灯中的LED显示器的反光镜运动禁止电路
公开(公告)号：US4092653A
公开(公告)日：1978-05-30
申请号：US735222
申请日：1976-10-22
申请人： Masahiro Kawasaki , Eiichi Tano , Yoshio Sawada
发明人： Masahiro Kawasaki , Eiichi Tano , Yoshio Sawada
IPC分类号： G03B17/18 , G03B17/20 , G03B19/12 , G03B7/00
CPC分类号： G03B17/20
摘要： A circuit for disabling the LED display L1-L5 in the light meter of a single lens reflex camera in response to mirror movements. When the mirror 21 is raised the switch 17 is closed which reverse biases the LEDs. After the mirror is lowered the switch 17 is opened to enable the LEDs, but a short time delay is provided to allow transients to settle out by reason of a capacitor 18 which must first charge through a grounding resistor 19.

88. 发明授权

US4089012A Digital exposure time indicating circuit for camera 失效
标题翻译：相机数字曝光时间指示电路
公开(公告)号：US4089012A
公开(公告)日：1978-05-09
申请号：US738994
申请日：1976-11-04
申请人： Masahiro Kawasaki
发明人： Masahiro Kawasaki
IPC分类号： G03B7/00 , G01J1/42 , G01J1/44 , G03B7/093 , G03B17/18 , G03B17/20 , G03B7/08
CPC分类号： G03B7/093 , G01J1/4214 , G03B17/20
摘要： A digital exposure time indicating system for a camera includes a light meter whose analog output is proportional to exposure time as a function of preset film sensitivity and aperture opening values, and the measured brightness level. The meter output is fed to a comparator, together with an analog signal from a D/A converter coupled to a counter which accumulates the pulses generated by an oscillator. When the converter output reaches the meter output the comparator signal, acting through a logic circuit, causes the counter signals to be set into a latch, whose outputs are fed through a B/D converter to an LED display.The latching is performed a half cycle after a comparison, whereby transients are allowed to settle out. Provision is also made for over scale and under scale indications when the meter output is outside of the normal comparison range, and a gate circuit causes the LEDs to flicker when the battery is low.
摘要翻译：用于照相机的数字曝光时间指示系统包括一个光度计，其模拟输出与曝光时间成比例，作为预设胶片感光度和光圈开度值以及所测亮度水平的函数。仪表输出与来自耦合到累加由振荡器产生的脉冲的计数器的D / A转换器的模拟信号一起馈送到比较器。当转换器输出达到仪表输出时，通过逻辑电路作用的比较器信号使计数器信号设置为锁存器，其输出通过B / D转换器馈送到LED显示屏。

89. 发明授权

US4075641A Automatic exposure control device in a camera 失效
标题翻译：摄像机中的自动曝光控制装置
公开(公告)号：US4075641A
公开(公告)日：1978-02-21
申请号：US625613
申请日：1975-10-24
申请人： Naoyuki Uno , Tetsuji Shono , Fumio Urano , Masahiro Kawasaki
发明人： Naoyuki Uno , Tetsuji Shono , Fumio Urano , Masahiro Kawasaki
IPC分类号： G03B7/085 , G03B7/095 , G03B7/08
CPC分类号： G03B7/085
摘要： An automatic iris adjustment control for cameras which, using the APEX operational equations, compares the brightness value Bv and film sensitivity value Sv with the iris size indication value Av and shutter speed value Tv. The iris size indicating value Av is derived from the sum of pulses created by a pulse generator which operates in conjunction with the moving adjustment of the iris size. When the values are compared and found equal, an electro-magnet is de-energized stopping the movement of the adjustable iris at the correct iris setting.

90. 发明授权

US3944370A Exposure time indication apparatus 失效
标题翻译：曝光时间指示装置
公开(公告)号：US3944370A
公开(公告)日：1976-03-16
申请号：US503925
申请日：1974-09-06
申请人： Masahiro Kawasaki
发明人： Masahiro Kawasaki
IPC分类号： G03B7/081 , G01J1/44 , G01R17/02 , G01R19/10 , G03B17/18
CPC分类号： G01J1/44 , G01R17/02 , G01R19/10 , G03B17/18
摘要： A voltage proportional to the APEX indication quantity for exposure time is coupled to one terminal of a meter through a buffer stage transistor. Circuit means produce a reference potential which is applied to the other terminal of the meter. The buffer stage transistor is biased by circuitry including a feedback stage transistor with the biasing being such that substantially constant collector current operation is ensured.
摘要翻译：与曝光时间的APEX指示量成比例的电压通过缓冲级晶体管耦合到仪表的一个端子。电路意味着产生一个参考电位，该参考电位被施加到仪表的另一端。缓冲级晶体管由包括反馈级晶体管的电路偏置，该偏置使得确保基本上恒定的集电极电流操作。

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