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12 条记录 (耗时 0.031 秒)

    Operation of a light modulator of the planar electrode type
    1.
    发明授权
    Operation of a light modulator of the planar electrode type 失效
    平面电极型光调制器的操作

    公开(公告)号：US5064277A

    公开(公告)日：1991-11-12

    申请号：US646116

    申请日：1991-01-28

    申请人： Richard N. Blazey ,  David M. Pultorak

    发明人： Richard N. Blazey ,  David M. Pultorak

    IPC分类号： G02F1/055

    CPC分类号： G02F1/0555

    摘要： An electro-optic light modulator of the type including a body of an electro-optic material having opposed surfaces and a pair of planar conductive electrodes on at least one of the surfaces of the body. Polarity-reversing drive circuitry applies a voltage across the electrodes, the polarity of the voltage being reversed at a frequency of about 1 Hz or less with polarity reversal occurring either when the light modulator is turned off or when there is an insignificiant voltage drop across the electrodes. This low frequency of the reversal of the polarity of the voltage substantially eliminates drift of the voltage-transmissivity of the modulator, lowers leakage, and reduces damage to the electrodes during a given period of time of operation.

    摘要翻译： 一种电光调制器，其类型包括具有相对表面的电光材料的主体和在主体的至少一个表面上的一对平面导电电极。 极性反转驱动电路在电极两端施加电压，电压的极性以约1Hz或更小的频率反转，极性反转发生时，或者当光调制器关闭时，或者当整个电压调节器处于不稳定的电压降时 电极。 电压极性反转的这个低频率基本上消除了调制器的电压 - 透射率的漂移，降低了泄漏，并且在给定的操作时间内减少了对电极的损坏。

    DETERMINING DOCUMENT CHARACTERISTICS PRIOR TO SCANNING
    2.
    发明申请
    DETERMINING DOCUMENT CHARACTERISTICS PRIOR TO SCANNING 有权
    确定扫描前的文件特性

    公开(公告)号：US20130094065A1

    公开(公告)日：2013-04-18

    申请号：US13272599

    申请日：2011-10-13

    申请人： David M. Pultorak

    发明人： David M. Pultorak

    IPC分类号： H04N1/40

    CPC分类号： H04N1/00702 ,  H04N1/0071 ,  H04N1/00713 ,  H04N1/00721 ,  H04N1/00734 ,  H04N1/00777 ,  H04N1/00779 ,  H04N1/00801 ,  H04N1/00809 ,  H04N1/00822

    摘要： A method of determining document characteristics prior to processing the document (11) in a document scanner (10) includes capturing at least a portion of an input image of documents in an input tray (20); transmitting the images to a processor (65); determining characteristics of the documents; processing the document based on the characteristics; wherein at least one characteristic is document length (70) or width (80) or position or other characteristics; and disabling or enabling ultrasonic zones (160) in at least one location down the document based on at least one characteristic.

    摘要翻译： 在文件扫描器（10）中处理文档（11）之前确定文档特征的方法包括：在输入托盘（20）中捕获文档的输入图像的至少一部分; 将图像发送到处理器（65）; 确定文件的特征; 根据特点处理文件; 其中至少一个特征是文件长度（70）或宽度（80）或位置或其它特征; 以及基于至少一个特征，在所述文档的至少一个位置中禁用或启用超声波区域（160）。

    Automatic exposure control using density slope control for a planetary microfilmer
    3.
    发明授权
    Automatic exposure control using density slope control for a planetary microfilmer 失效
    使用密度斜率控制的行星微型压缩机的自动曝光控制

    公开(公告)号：US5424804A

    公开(公告)日：1995-06-13

    申请号：US216898

    申请日：1994-03-23

    申请人： David M. Pultorak

    发明人： David M. Pultorak

    IPC分类号： G03B7/093 ,  G03B27/465 ,  G03B27/74 ,  G03B27/80

    CPC分类号： G03B7/093 ,  G03B27/465

    摘要： A method and apparatus for establishing optimum film exposure time for documents of different reflectances, A photo-sensor is used to produce a signal proportional to the intensity of light reflected from the document to be microfilmed, The signal is integrated and a time is determined for the integrated signal to reach a threshold or reference value, The time needed to reach the threshold value is measured very accurately by a microprocessor, The measured time is then convened to new time by using a look-up table, The new or desired shutter time is controlled by the microprocessor by terminating the exposure when the total time the shutter was open equals new exposure time found in this look-up table.

    摘要翻译： 一种用于为不同反射率的文档建立最佳胶片曝光时间的方法和装置，使用光电传感器来产生与要被缩微胶卷的文档反射的光的强度成正比的信号。该信号被积分，并且确定一个时间 积分信号达到阈值或参考值，达到阈值所需的时间由微处理器非常精确地测量，然后通过使用查找表将测量时间调到新的时间。新的或所需的快门时间 由微处理器控制，当快门打开的总时间等于此查找表中发现的新曝光时间时终止曝光。

    IMAGE PROCESSING UNIT FOR SUPPORTING MULTIPLE SCANNERS
    4.
    发明申请
    IMAGE PROCESSING UNIT FOR SUPPORTING MULTIPLE SCANNERS 审中-公开
    用于支持多台扫描仪的图像处理单元

    公开(公告)号：US20130194639A1

    公开(公告)日：2013-08-01

    申请号：US13362419

    申请日：2012-01-31

    申请人： Bruce A. Link ,  Donald C. Kurdt ,  David M. Pultorak ,  George E. Lathrop

    发明人： Bruce A. Link ,  Donald C. Kurdt ,  David M. Pultorak ,  George E. Lathrop

    IPC分类号： H04N1/32

    CPC分类号： H04N1/32593 ,  H04N1/32502

    摘要： An image processing unit for processing digital image data. A plurality of hardware interfaces each is associated with one of a plurality of digital image sources for receiving image data. There are means for determining a data source from the received image data, and an image processing unit connected to the interfaces processes the received image data to generate processed image data. An output interface connected to the image processing unit outputs the processed image data.

    摘要翻译： 一种用于处理数字图像数据的图像处理单元。 多个硬件接口各自与用于接收图像数据的多个数字图像源之一相关联。 存在用于从接收到的图像数据确定数据源的装置，并且连接到接口的图像处理单元处理所接收的图像数据以生成经处理的图像数据。 连接到图像处理单元的输出接口输出处理后的图像数据。

    Method and apparatus for multiple document detection using ultrasonic phase shift amplitude
    5.
    发明授权
    Method and apparatus for multiple document detection using ultrasonic phase shift amplitude 有权
    使用超声波相移幅度进行多文档检测的方法和装置

    公开(公告)号：US06511064B1

    公开(公告)日：2003-01-28

    申请号：US09552064

    申请日：2000-04-19

    申请人： Daniel P. Phinney ,  David M. Pultorak ,  Albert H. Titus

    发明人： Daniel P. Phinney ,  David M. Pultorak ,  Albert H. Titus

    IPC分类号： B65H712

    CPC分类号： B65H7/125 ,  B65H2553/30 ,  G01N29/075 ,  G01N2291/0237

    摘要： According to one aspect of the present invention an apparatus for multiple document detection includes an ultrasonic transmitter (14) for transmitting an ultrasonic signal (16). An ultrasonic receiver (20) receives the ultrasonic signal (17), after it passes through the at least one of the multiple documents (18). A phase comparator (24) compares the transmitted ultrasonic signal (16) and the received ultrasonic signal (17), and an amplitude measurement circuit (26) compares the received ultrasonic signal (17) to a reference. A microprocessor (32) compares an information signal (28) from the phase comparator (24) and an information signal (30) from the amplitude measurement circuit (26) to a predetermined threshold to determine if multiple documents are present.

    摘要翻译： 根据本发明的一个方面，一种用于多文档检测的装置包括用于发送超声信号（16）的超声波发射器（14）。 超声波接收器（20）在通过多个文件（18）中的至少一个之后接收超声波信号（17）。 相位比较器（24）比较发送的超声信号（16）和接收到的超声波信号（17），并且振幅测量电路（26）将接收到的超声信号（17）与基准进行比较。 微处理器（32）将来自相位比较器（24）的信息信号（28）和来自振幅测量电路（26）的信息信号（30）与预定阈值进行比较，以确定是否存在多个文档。

    Method and apparatus for determining a digital phase shift in a signal
    10.
    发明授权
    Method and apparatus for determining a digital phase shift in a signal 有权
    用于确定信号中的数字相移的方法和装置

    公开(公告)号：US06407599B1

    公开(公告)日：2002-06-18

    申请号：US09567896

    申请日：2000-05-10

    申请人： Daniel P. Phinney ,  David M. Pultorak

    发明人： Daniel P. Phinney ,  David M. Pultorak

    IPC分类号： H03L700

    CPC分类号： G01N29/4436 ,  B65H7/125 ,  B65H2553/30 ,  B65H2557/61 ,  G01N29/075 ,  G01N29/36 ,  G01N2291/015 ,  G01N2291/0237 ,  G01R25/00 ,  G03G2215/00548 ,  H04N1/00002 ,  H04N1/00037 ,  H04N1/0005 ,  H04N1/00092

    摘要： A method for determining a digital phase in a signal comprises sampling a reference signal for a low going edge. If the low going edge is not detected the reference signal is sampled again. If low going edge is detected (78) a counter is initialized (70). The reference signal is again sampled if a high going edge is not detected the reference signal is resampled until the high going edge is detected (79). When a high going edge is detected (79) a counter is started (73). A resulting signal is then sampled if the level of the resulting signal is high the resulting signal is sampled until a low going edge is detected (78). If a low going edge is not detected sampling of the resulting signal continues. If a low going edge is detected (78) sampling is continued until a high going edge is detected (79) at which point the counter is stopped (76). The counter updates a register (96). When the resulting signal was sampled for a high level the resulting signal is sampled until a high going edge is determined (79) at which point the register is stopped and converted to a phase difference (84). In one embodiment of the invention the reference signal being sampled is a driver for an ultrasonic transmitter (14) and the resulting signal is an electrical signal (21) representative of a received ultrasonic signal (16).

    摘要翻译： 用于确定信号中的数字相位的方法包括对低走沿的参考信号进行采样。 如果未检测到下降沿，则再次采样参考信号。 如果检测到下降沿（78），则计数器被初始化（70）。 如果没有检测到高电平边沿，则再次采样参考信号，直到检测到高电平边沿为止重新采样参考信号（79）。 当检测到高档边缘时（79）启动计数器（73）。 如果所得到的信号的电平为高，则产生的信号被采样，得到的信号被采样，直到检测到低的下降沿（78）。 如果未检测到低电平边沿，则产生的信号的采样继续。 如果检测到下降沿（78），则继续采样直到检测到高的上升沿（79），此时计数器停止（76）。 计数器更新寄存器（96）。 当所得到的信号被采样为高电平时，得到的信号被采样，直到确定高电平边沿为止（79），此时寄存器停止并转换为相位差（84）。 在本发明的一个实施例中，被采样的参考信号是用于超声波发射器（14）的驱动器，并且所得到的信号是表示接收的超声信号（16）的电信号（21）。