公开(公告)号：US4121138A

公开(公告)日：1978-10-17

申请号：US801703

申请日：1977-05-31

申请人： John R. Flint ,  Rolf B. Erikson ,  George Rabindran

发明人： John R. Flint ,  Rolf B. Erikson ,  George Rabindran

IPC分类号： B65H23/18 ,  G11B15/54 ,  B65H77/00

CPC分类号： G11B15/54 ,  B65H23/1806

摘要： A system is described for controlling the speed and direction of rotation of first and second spools in a web transport system in which a web is advanced between the spools by first and second drive motors. The system incorporates a servo control which continuously reacts to variations in the speed of the spools so as to drive the spools at respective speeds whose sum is constant and proportional to a selectable control voltage. To achieve this result, the first and second spools, driven, respectively by the first and second drive motors, are coupled to means, such as a corresponding pair of servo generators, for generating electrical outputs representative of the direction and speed of rotation of the spools. A control voltage, proportional to the sum of the desired speeds of the two spools, is continuously and algebraically summed with the outputs of the two servo generators, the summed signal constituting a motor drive signal. A motor drive control receives the motor drive signal and selectively applies it to the drive motor associated with the spool upon which the web is to be wound. The pull thus exerted on the web by the actively driven spool rotates the other spool, both spools thereby rotating their corresponding servo generators. The motor drive signal, derived from the control voltage and the outputs of the servo generators, continuously reflects the changing outputs of the servo generators so as to cause the spools to rotate at respective speeds whose sum is constant and proportional to the control voltage.

摘要翻译： 描述了一种用于控制卷筒纸传送系统中的第一和第二卷轴的速度和旋转方向的系统，其中卷筒纸通过第一和第二驱动马达在卷轴之间前进。 该系统包括伺服控制器，该伺服控制器连续地响应于阀芯速度的变化，以便以总和恒定并与可选控制电压成比例的各自速度驱动阀芯。 为了实现这一结果，分别由第一和第二驱动电动机驱动的第一和第二线轴耦合到诸如相应的一对伺服发电机的装置，用于产生代表该转速的方向和转速的电输出 线轴。 与两个线轴的期望速度的和成比例的控制电压与两个伺服发生器的输出连续地和代数相加，构成电机驱动信号的求和信号。 马达驱动控制器接收马达驱动信号，并选择性地将其施加到与要卷绕卷筒纸的卷轴相关联的驱动马达。 由主动从动卷轴施加在卷筒纸上的拉力使另一个卷轴旋转，两个卷轴由此旋转它们相应的伺服发生器。 根据控制电压和伺服发生器的输出导出的电动机驱动信号连续地反映伺服发生器的变化的输出，以使线轴以总和恒定并与控制电压成比例的各个速度旋转。

公开(公告)号：US4174891A

公开(公告)日：1979-11-20

申请号：US939945

申请日：1978-09-06

申请人： John R. Flint ,  Bruce A. Rady

发明人： John R. Flint ,  Bruce A. Rady

IPC分类号： G03B21/11 ,  G06K17/00 ,  G03B23/12 ,  G03B23/08 ,  G06K7/00 ,  G06K19/00

CPC分类号： G06K17/0019 ,  G03B21/118

摘要： A microprocessor controlled microfilm reader/printer is arranged to transport a roll of film having all images contained thereon, in a distinctive format involving sequentially recorded photographic areas. The reader/printer has an automatic call feature up, so that any given photographic area may be selected and projected responsive to the push of a button, the operation of a rotary switch, or both. A special bar code printed along an edge of the film eliminates the need for precise control over a film transport synchronized with a code reading speed. The bar code is preferably read by an optical electronic sensor, which provides a film positioning input control signal to enable an accurate locating of a selected photographic area within a viewing area.

摘要翻译： 微处理器控制的微缩胶阅读器/打印机布置成以包含顺序记录的摄影区域的特殊格式来传送其上包含所有图像的胶卷。 读取器/打印机具有自动呼叫功能，使得可以响应于按钮的按下，旋转开关的操作或两者来选择和投影任何给定的照相区域。 沿着胶片边缘印刷的特殊条形码消除了与代码读取速度同步的胶片传输的精确控制的需要。 条形码优选地由光学电子传感器读取，光学电子传感器提供胶片定位输入控制信号，以使得能够精确地定位观看区域内的所选摄影区域。

公开(公告)号：US4146824A

公开(公告)日：1979-03-27

申请号：US836629

申请日：1977-09-26

申请人： John R. Flint ,  K. George Rabindran

发明人： John R. Flint ,  K. George Rabindran

IPC分类号： B65H23/18 ,  G06K17/00 ,  H02P5/50 ,  H02P1/56

CPC分类号： G06K17/0019

摘要： A control system is described for use in a web transport in which a web is advanced from a supply spool to a take-up spool by a pair of drive motors, the latter of which are actuated by a servo control. The system includes a variable gain network which enhances the gain of the servo system at very low speeds without sacrificing system stability at higher speeds, and a circuit for adding a hold-back torque to the motor driving the take-up spool to smooth its rotation under low torque conditions. In addition, the system includes a device for inhibiting the rotation of the spools when an operator has removed the web from the spools, thereby preventing the servo control from rotating the spools in an uncontrolled manner in response to inadvertent operator movement of one of the spools.

公开(公告)号：US4110020A

公开(公告)日：1978-08-29

申请号：US711180

申请日：1976-08-03

申请人： Delmar R. Johnson ,  John R. Flint ,  Thomas R. Wells ,  Rolf B. Erikson ,  Bruce A. Rady

发明人： Delmar R. Johnson ,  John R. Flint ,  Thomas R. Wells ,  Rolf B. Erikson ,  Bruce A. Rady

IPC分类号： G03B21/11 ,  G03B23/12 ,  G03B23/08 ,  G06K7/10 ,  G06K19/00

CPC分类号： G03B21/11

摘要： An electronically controlled photographic image utilization device is arranged to transport a roll of microfilm having all images printed thereon in separate photographic areas, each area being arranged in a microfiche-type format. The photographic image utilization device has an automatic call-up feature so that any given photographic area may be selected and projected responsive to the push of a button, the operation of a rotary switch or both. A special bar code is printed along the edge of the film and used in conjunction with a closed loop film control system to eliminate the need for precise, clock controlled synchronization between the film transport and the code reading. Preferably, the bar code is read by optical electronic sensors. Responsive thereto, the electronic control system accurately positions a selected photographic image, on the microfilm, within a viewing area. Thereafter, and while the film transport is being held stationary, any image on the microfilm may be selected for projection by a manual movement of a simple lens positioning mechanism which is small, compact, and easily moved. The reader may also be operated manually so that the automatic controls may be bypassed, if desired.

摘要翻译： 电子控制的摄影图像利用装置被布置成将具有印刷在其上的所有图像的一卷缩微胶片输送到单独的照相区域中，每个区域以缩微胶片型格式排列。 摄影图像利用装置具有自动呼叫特征，使得可以响应于按钮的按下，旋转开关的操作或两者来选择和投影任何给定的照相区域。 沿着胶片边缘打印出特殊的条形码，并与闭环胶片控制系统结合使用，以消除在胶片传输和代码读取之间精确的时钟控制同步的需要。 优选地，条形码由光学电子传感器读取。 响应于此，电子控制系统将所选择的摄影图像精确地定位在可视区域内的微缩胶片上。 此后，当胶片传送被保持静止时，可以通过简单的透镜定位机构的手动移动来选择缩微胶片上的任何图像进行投影，该简单的透镜定位机构小型，紧凑并且容易移动。 读取器也可以手动操作，以便如果需要可以绕过自动控制。

公开(公告)号：US4101763A

公开(公告)日：1978-07-18

申请号：US803019

申请日：1977-06-03

申请人： John R. Flint ,  K. George Rabindran

发明人： John R. Flint ,  K. George Rabindran

IPC分类号： G06K7/10 ,  G06M7/06 ,  H01J40/14 ,  H03G3/20 ,  H01J39/12

CPC分类号： H03G3/3084 ,  G06K7/10851 ,  G06M7/06 ,  H01J40/14

摘要： A control system is described for converting the output current of a photosensitive image detector to an image location voltage of predetermined first and second levels in response to the image detector receiving high and low levels of light, respectively. The image location voltage is developed by passing the output current from the image detector, as well as a selectively variable control current, through an impedance such that increases and decreases in the amplitude of the control current result in corresponding decreases and increases, respectively, in the level of the image location voltage. To change the level of the image location voltage, the amplitude of the control current is caused to be proportional to the charge on a charge storing element and the latter is rapidly and alternately charged and discharged within predetermined limits to vary the amplitude of the control current, and thus the level of the image location voltage. By so varying the charge on the charge storing element, the image location voltage is caused to have an average value which is substantially equal to the first predetermined level when the image detector receives a relatively high level of light, and an average value which is substantially equal to the second predetermined level when the image detector receives a relatively low level of light.

公开(公告)号：US4093376A

公开(公告)日：1978-06-06

申请号：US691733

申请日：1976-06-01

申请人： Karavattuveetil George Rabindran ,  John R. Flint

发明人： Karavattuveetil George Rabindran ,  John R. Flint

IPC分类号： G03B27/72 ,  G03B27/80 ,  G03B27/78

CPC分类号： G03B27/80

摘要： The disclosure relates to an automatic exposure control system for use in a document recorder of the type which makes a photographic reproduction of each of a series of documents and which has a document transport for feeding the documents along a predetermined path and an exposure station within the predetermined path including an exposure light source for illuminating each document as each document is presented to the exposure station to facilitate the photographing of the documents. The automatic exposure control system controls the illumination intensity of the exposure light source in response to the reflectivity of each document to assure proper exposure of each document. It includes a first light source arranged relative to the predetermined path in advanced relation to the exposure station relative to document travel for projecting light onto the documents, a first light sensitive element arranged relative to the predetermined path for receiving the light reflected from the documents originating from the first light source for providing a first control signal having a magnitude directly related to the intensity of the reflected light, a feedback arrangement coupled between the first light source and the first light sensitive element for controlling the intensity of the first light source in response to the first control signal to render the intensity of the reflected light received by the first light sensitive element substantially constant, and control means coupled to the exposure light source and responsive to the light output intensity of the first light source for controlling the illumination intensity of the exposure light source as each document is presented to the exposure station.

摘要翻译： 本公开涉及一种用于文件记录器的自动曝光控制系统，该文件记录器用于对一系列文件中的每一个进行照相再现，并具有用于沿预定路径馈送文件的文档传送和在该文件记录器内的曝光站 预定路径包括用于将每个文档照亮的曝光光源，作为每个文档被呈现给曝光站以便于文件的拍摄。 自动曝光控制系统响应于每个文档的反射率来控制曝光光源的照明强度，以确保每个文档的正确曝光。 它包括相对于曝光站相对于预定路径相对于用于将光投射到文件上的文档行进而布置的第一光源，相对于预定路径布置的第一光敏元件，用于接收源自文档的反射光 从用于提供具有与反射光的强度直接相关的幅度的第一控制信号的第一光源，耦合在第一光源和第一光敏元件之间的反馈装置，用于响应于控制第一光源的强度 到第一控制信号，以使由第一感光元件接收的反射光的强度基本上恒定;以及控制装置，其耦合到曝光光源并且响应于第一光源的光输出强度来控制第一光敏元件的照明强度 曝光光源为每个文件 t被呈现给曝光站。

公开(公告)号：US4448364A

公开(公告)日：1984-05-15

申请号：US366948

申请日：1982-04-09

申请人： Richard Frystak ,  Robert F. Johnston ,  John R. Flint

发明人： Richard Frystak ,  Robert F. Johnston ,  John R. Flint

IPC分类号： B65H20/38 ,  G11B15/44 ,  B65H17/02 ,  B65H59/38

CPC分类号： B65H20/38 ,  G11B15/444

摘要： A web drive system for automatically reversing the direction of travel of the web when the end of the web is reached. A reversible electric motor provides power to either the supply or take up spindles. An end of the web is affixed to each of the spindles so that either spindle can be provided with power to draw the web from the other spindle. A planetary gear system provides power to whichever spindle acts as the take up spindle until the end of the web is sensed. The motor is then reversed and the planetary gear then provides power to the other spindle, which was previously the supply spindle.

摘要翻译： 一种卷筒纸驱动系统，用于在纸幅末端到达时自动反转纸幅的行进方向。 可逆电动机为供应或卷绕主轴提供动力。 网的一端固定到每个主轴上，使得任一个主轴可以设置有从另一个主轴牵引卷材的动力。 行星齿轮系统为主轴作为卷取轴提供动力，直到感测到卷筒纸的末端。 然后马达被反转，然后行星齿轮向另一个主轴提供电力，这是以前的供应主轴。

公开(公告)号：US4254364A

公开(公告)日：1981-03-03

申请号：US36192

申请日：1979-05-04

申请人： John R. Flint ,  Karavattuveetil G. Rabindran ,  Jerry W. Clevenger

发明人： John R. Flint ,  Karavattuveetil G. Rabindran ,  Jerry W. Clevenger

IPC分类号： H05B41/392 ,  G05F1/00 ,  H05B41/39

CPC分类号： H05B41/3922 ,  Y10S315/05

摘要： A flow, or rotary type, microfilm recording apparatus for filming documents having a document transport means to move documents past an aperture area. An alternating current powered fluorescent lamp is employed for illuminating the documents in the aperture area. In order to adjust, set and maintain a substantially constant level of illumination in the aperture area and to reduce flicker, a lamp regulator circuit is provided which includes a shunted rectifier load circuit and a variable current device responsive to the illumination from the fluorescent lamp for varying the voltage drop across the shunt in accordance with the illumination.

摘要翻译： 一种流动或旋转式微缩胶片记录装置，用于拍摄具有文件传送装置的文件，以使文件移动通过孔径区域。 使用交流供电的荧光灯来照明孔径区域中的文件。 为了调整，设置和维持开口面积中基本恒定的照明水平并减少闪烁，提供了灯调节器电路，其包括分流的整流器负载电路和响应于来自荧光灯的照明的可变电流装置， 根据照明改变分流器两端的电压降。

公开(公告)号：US4200224A

公开(公告)日：1980-04-29

申请号：US935413

申请日：1978-08-21

申请人： John R. Flint

发明人： John R. Flint

IPC分类号： G06F11/277 ,  G06F11/00

CPC分类号： G06F11/277

摘要： Apparatus and method for testing the operability of a microprocessor and a machine controlled by the microprocessor are described. The input/output ports of the microprocessor are tested by propagating, via a test program in the microprocessor, a test logic level along the ports of the microprocessor. As the test logic level propagates, its position is revealed by the successive energization of adjacent light-emissive devices which are external to the microprocessor but connected to the microprocessor ports. Proper propagation of the test logic level is indicated by a corresponding propagation of light across the light-emissive devices. To test the machine, the microprocessor is put in a quiescent but energized state and test logic levels are applied to the ports coupling data between the microprocessor and the machine. Selected functions of the machine are thus exercised independently of the microprocessor.

摘要翻译： 描述了用于测试由微处理器控制的微处理器和机器的可操作性的装置和方法。 微处理器的输入/输出端口通过微处理器中的测试程序传播沿着微处理器端口的测试逻辑电平进行测试。 当测试逻辑电平传播时，其位置通过在微处理器外部但连接到微处理器端口的相邻发光器件的连续通电来显示。 测试逻辑电平的正确传播由光穿过发光器件的相应传播指示。 为了测试机器，微处理器处于静止但通电状态，并且测试逻辑电平被应用于耦合微处理器和机器之间的数据的端口。 因此，独立于微处理器来执行机器的所选功能。

公开(公告)号：US4101808A

公开(公告)日：1978-07-18

申请号：US617270

申请日：1975-09-30

申请人： John R. Flint

发明人： John R. Flint

IPC分类号： H05B39/04

CPC分类号： H05B39/042 ,  Y02B20/14 ,  Y10S323/902

摘要： The disclosure relates to a lamp control circuit for maintaining the light output intensity of an incandescent lamp or banks of lamps constant. The lamp control circuit comprises a pair of input terminals adapted for connection to an illumination power source having one of the input terminals coupled to one side of the incandescent lamp to be controlled, and switching means coupled to the other side of the controlled lamp and to the other input terminal so that when the switching means is closed the illuminating power from the power source is applied to the controlled lamp and when the switch is open the illuminating power to the controlled lamp is terminated. The lamp control circuit additionally includes an illumination power sampling means which includes a second incandescent lamp which is coupled between the one input terminal and the switching means for sampling the illumination power and converting the sampled illumination power to light energy having an intensity related to the amount of the illuminating power received by the controlled lamp. A light sensitive detector is associated with the second incandescent lamp and is coupled to the switching means for controlling the switching means closed and open time durations responsive to the second incandescent lamp light intensity to render the light output intensity of the controlled lamp substantially constant.