Photographic camera with focussing system which time-multiplexes the
signals from plural photodetectors
    1.
    发明授权
    Photographic camera with focussing system which time-multiplexes the signals from plural photodetectors 失效
    具有聚焦系统的照相机,其对来自多个光电检测器的信号进行时间复用

    公开(公告)号:US4221474A

    公开(公告)日:1980-09-09

    申请号:US5091

    申请日:1979-01-22

    CPC分类号: G01C3/24 G02B7/32

    摘要: An infrared measuring beam is emitted from the camera towards the subject, and reflected back as a tiny light spot projected, by an optics which transversely shifts in dependence upon exposure-objective subject-distance setting, onto one, the other or both of two infrared photodiodes. The signals from the two photodiodes are transmitted in processed form to two output flip-flops through the intermediary of a single, shared signal-processing stage, employing time-division-multiplexed transmission of the two photodiode signals, to assure that the signal processing of the two photodiode output signals be as identical as possible.

    摘要翻译: 红外测量光束从相机朝向被摄体发射,并且通过根据曝光目标对象距离设置而横向偏移的光学器件投射到一个微小光点上并反射回到另一个或两个红外线 光电二极管 来自两个光电二极管的信号通过采用时分多路传输两个光电二极管信号的单个共享信号处理级的中介,以处理形式传输到两个输出触发器,以确保信号处理 两个光电二极管输出信号尽可能相同。

    Exposure control circuit
    2.
    发明授权
    Exposure control circuit 失效
    曝光控制电路

    公开(公告)号:US4007467A

    公开(公告)日:1977-02-08

    申请号:US596054

    申请日:1975-07-15

    IPC分类号: G03B7/083 G03B7/08

    CPC分类号: G03B7/083

    摘要: A light-sensitive element is connected to a capacitor to vary the charging rate of the capacitor in accordance with the light falling on the light-sensitive element. The emitter-collector circuit of a switching transistor is connected in series with the light-sensitive element. The base of the transistor is pulsed by an astable multivibrator which furnishes a pulse sequence having a pulse repetition rate which exceeds the reciprocal of the smallest exposure time. The pulses in the pulse sequence have a pulse width determined by the selected one of a plurality of resistors. The selector switch inserting the selected one of the resistors into the astable multivibrator circuit is coupled to selector means which select one of a plurality of exposure factors as for example the aperture size. The electronic switch is conductive, permitting charging of the capacitor only during the pulse duration. The charging rate of the capacitor can therefore be adapted to the particular aperture size, film sensitivity, etc. without changing the capacitance of the capacitor or covering a portion of the light-sensitive element.

    摘要翻译: 光敏元件连接到电容器以根据落在光敏元件上的光来改变电容器的充电速率。 开关晶体管的发射极 - 集电极电路与光敏元件串联连接。 晶体管的基极由不稳定的多谐振荡器脉冲,其提供具有超过最小曝光时间的倒数的脉冲重复率的脉冲序列。 脉冲序列中的脉冲具有由多个电阻器中的所选择的电阻器确定的脉冲宽度。 将所选择的一个电阻器插入到非稳态多谐振荡器电路中的选择器开关耦合到选择器装置,其选择多个曝光因子中的一个,例如孔径尺寸。 电子开关是导通的,只允许在脉冲持续时间内对电容充电。 因此,电容器的充电速率可以适应于特定孔径尺寸,膜敏感性等,而不改变电容器的电容或覆盖光敏元件的一部分。

    Weighting of the scene light signal during the shutter opening operation
    3.
    发明授权
    Weighting of the scene light signal during the shutter opening operation 失效
    在快门打开操作期间加权场景灯信号

    公开(公告)号:US4313656A

    公开(公告)日:1982-02-02

    申请号:US154301

    申请日:1980-05-29

    CPC分类号: G03B7/083

    摘要: A system is disclosed for automatically controlling the shutter in a camera in accordance with ambient scene light level. While the shutter is opening, incident light is weighted at only one-half the value at which it is weighted after the shutter has been fully opened. A switchable voltage divider is utilized to accomplish the weighting function in accordance with shutter blade position.

    摘要翻译: 公开了一种根据环境场景光级自动控制照相机中的快门的系统。 当快门打开时,入射光仅在快门完全打开之后的加权值的一半。 利用可切换分压器,根据快门叶片的位置来完成加权功能。

    Digital exposure-duration control circuit with upper limit on exposure
duration
    4.
    发明授权
    Digital exposure-duration control circuit with upper limit on exposure duration 失效
    数字曝光持续时间控制电路,曝光时间上限

    公开(公告)号:US4273428A

    公开(公告)日:1981-06-16

    申请号:US32902

    申请日:1979-04-24

    IPC分类号: G03B7/16 G03B17/18 G03B7/093

    CPC分类号: G03B7/16

    摘要: A first pulse train whose pulse repetition frequency varies in dependence upon scene light, and a second pulse train whose pulse repetition frequency does not vary in dependence upon scene light, are counted by digital counting circuitry, and a terminate-exposure signal is produced when the digital counting circuitry reaches a predetermined count. The second pulse train serves to establish an upper permissible limit for the duration of the exposure to be performed.

    摘要翻译: 脉冲重复频率根据场景光而变化的第一脉冲串,并且脉冲重复频率根据场景光不变化的第二脉冲串由数字计数电路计数,当产生终止曝光信号时,产生终止曝光信号 数字计数电路达到预定计数。 第二脉冲串用于建立要执行的曝光持续时间的允许上限。

    Photographic camera
    5.
    发明授权

    公开(公告)号:US3958256A

    公开(公告)日:1976-05-18

    申请号:US517842

    申请日:1974-10-24

    CPC分类号: G03B7/083

    摘要: A single light-sensitive element serves to furnish a signal for setting the aperture prior to the exposure time and to control the exposure time. Prior to the exposure time a first and second threshold stage furnish a first and second threshold output signal respectively when the light is in a first and second predetermined range. The first and second threshold output signals are applied to the control input of a first and second D flip-flop. The output of the D flip-flop varies as a function of the signal at the control input only in the presence of a gating signal. The gating signals are applied to the D flip-flops only prior to the exposure time. The outputs of the first and second D flip-flops are applied to an exclusive OR-circuit whose output is applied to aperture control means which vary the size of the aperture in dependence on the logic circuit output signal. The D flip-flop maintains its output after removal of the gating signal thereby maintaining the aperture size during exposure. A switch operative with the diaphragm aperture control switches integrating circuit elements corresponding to the aperture size into the automatic exposure control circuit of the camera during exposure.

    Method and device for image processing
    6.
    发明授权
    Method and device for image processing 失效
    图像处理方法和装置

    公开(公告)号:US5933585A

    公开(公告)日:1999-08-03

    申请号:US751131

    申请日:1996-11-15

    IPC分类号: H04N1/387 G06K15/00

    CPC分类号: H04N1/3875

    摘要: A method and apparatus for the processing of images which are stored on a medium, having images which are electronically raster scanned and then subject to signal processing. The image signals for each image are processed electronically at least two times, with different parameters, and each of the processed image signals is sent to a single printing device. For example, the parameters may describe size, orientation, format, or composite printing, e.g., of an index print.

    摘要翻译: 一种用于处理存储在介质上的图像的方法和装置,其具有电子光栅扫描然后进行信号处理的图像。 每个图像的图像信号以电子方式进行至少两次处理,具有不同的参数,并且每个处理的图像信号被发送到单个打印装置。 例如,参数可以描述例如索引打印的大小,方向,格式或复合打印。

    Scanning method and apparatus
    7.
    发明授权
    Scanning method and apparatus 失效
    扫描方法和装置

    公开(公告)号:US5696616A

    公开(公告)日:1997-12-09

    申请号:US433134

    申请日:1995-05-03

    摘要: A scanner has a light sensing unit, and a reflecting unit which reflects light to the sensing unit either directly or indirectly. The reflecting unit receives light from an object being scanned or from a light source. In the former case, the light is reflected to the sensing unit directly. In the latter case, the light is reflected to the sensing unit indirectly. Thus, the reflecting unit directs light to an object being scanned and the object transmits or reflects the light to the sensing unit. The reflecting unit is made up of a series of micromirrors, and each of the micromirrors corresponds to a respective point of the object being scanned. The micromirrors are independently movable between rest positions in which they reflect light away from the sensing unit and active positions in which they reflect light towards the sensing unit. The micromirrors are successively moved from the rest positions to the active positions and back to the rest positions so that only one micromirror at a time directs light to the sensing unit. In this manner, scanning is accomplished point-by-point. The scanner can be used in a photographic copier to measure the densities of film frames and thereby regulate the exposure times during copying.

    摘要翻译: 扫描器具有光感测单元和反射单元,其将光直接或间接地反射到感测单元。 反射单元从被扫描物体或从光源接收光。 在前一种情况下,光直接反射到感测单元。 在后一种情况下,光被间接地反射到感测单元。 因此,反射单元将光引导到被扫描的物体,并且物体将光传送或反射到感测单元。 反射单元由一系列微镜组成,每个微镜对应于被扫描物体的相应点。 微镜可独立地在静止位置之间移动,在静止位置中,它们将反射光从感测单元反射出来,并且其中它们将光反射到感测单元的有效位置。 微镜从静止位置连续地移动到活动位置并返回到静止位置,使得一次只有一个微反射镜将光引导到感测单元。 以这种方式,逐点实现扫描。 扫描仪可用于复印机中以测量胶片框的密度,从而调节复印期间的曝光时间。

    Photographic camera with exposure control utilizing a phase controllable
crystal
    8.
    发明授权
    Photographic camera with exposure control utilizing a phase controllable crystal 失效
    具有利用相位可控晶体的曝光控制的照相机

    公开(公告)号:US4190343A

    公开(公告)日:1980-02-26

    申请号:US608326

    申请日:1975-08-27

    IPC分类号: G03B7/08 G03B7/16 G03B9/56

    CPC分类号: G03B7/16 G03B7/0807

    摘要: A high speed light measuring circuit utilizing a photodiode is combined with a high speed exposure terminating circuit utilizing two polarized filters and a liquid or ferroelectric crystal placed between the polarized filters to constitute an exposure control circuit operative without modification for both daylight and flash exposure.

    摘要翻译: 使用光电二极管的高速光测量电路与利用两个偏振滤光器的高速曝光终端电路和位于偏振滤光器之间的液体或铁电晶体组合​​,以构成曝光控制电路,而无需修改日光和闪光曝光。

    Motion picture camera operable by a single operating switch
    9.
    发明授权
    Motion picture camera operable by a single operating switch 失效
    运动照相机可由单个操作开关操作

    公开(公告)号:US4050795A

    公开(公告)日:1977-09-27

    申请号:US663814

    申请日:1976-03-04

    CPC分类号: G03B7/085 G03B19/18

    摘要: A single operating switch replaces the main switch connecting the diaphragm control means to the battery and the release switch activating the film transport. All camera circuits are directly connected to the battery when the main operating switch is closed. An electronic switch is connected in series with the film transport motor and is closed only upon receipt of a control signal. In a first embodiment the control signal is furnished by a timing circuit after a predetermined time interval following the activation of the main operating switch. In a second embodiment the control signal is furnished by a NAND-gate which has a first input which receives a "1" signal while the diaphragm is being adjusted and a second input which receives a "1" signal while the electronic switch is open. The NAND-gate thus furnishes a "1" signal to the electronic switch causing it to be conductive at all times except when the initial adjustment of the diaphragm takes place.

    摘要翻译: 单个操作开关代替将隔膜控制装置连接到电池的主开关和启动胶片传输的释放开关。 当主操作开关关闭时,所有相机电路都直接连接到电池。 电子开关与胶片传送电机串联连接,仅在接收到控制信号时才关闭。 在第一实施例中,在主操作开关激活之后的预定时间间隔之后,控制信号由定时电路提供。 在第二实施例中,控制信号由NAND门提供,该NAND门具有在调节隔膜时接收“1”信号的第一输入端和在电子开关断开时接收“1”信号的第二输入端。 因此,NAND门因此向电子开关提供“1”信号,导致其始终是导电的,除了当膜片的初始调节发生时。

    Motion picture camera with improved frame count indicator
    10.
    发明授权
    Motion picture camera with improved frame count indicator 失效
    具有改进的帧数指示器的电影摄影机

    公开(公告)号:US3977776A

    公开(公告)日:1976-08-31

    申请号:US607056

    申请日:1975-08-22

    CPC分类号: G03B1/66

    摘要: Pulses are furnished which each indicate transport of a frame. The pulses are counted on a BCD counter. Selected outputs of the counter are connected to the inputs of coupling stages, each including a JK flip-flop. Each flip-flop changes state for a predetermined count on the counter. When each flip-flop changes state, a corresponding indicator lights up, thereby furnishing an indication to the photographer of how many frames have been transported.

    摘要翻译: 每个脉冲都指示一帧的传输。 脉冲在BCD计数器上计数。 计数器的选定输出端连接到耦合级的输入端,每一个都包括一个JK触发器。 每个触发器在计数器上改变预定计数的状态。 当每个触发器改变状态时,相应的指示灯亮起,从而向拍摄者提供已经传送了多少帧的指示。