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公开(公告)号：US09052513B2
公开(公告)日：2015-06-09
申请号：US13464942
申请日：2012-05-04
CPC分类号： G02B26/10 , G03G15/04072 , G03G2215/0145
摘要： A system and method for reducing scan line jitter caused by facet cut variation in scan systems employing a plurality of laser sources and a sensor for generating the timing for the laser sources. The system includes a controller for determining a unique time delay for each facet of the rotating mirror, and controlling the laser sources so that video provided by each laser source is delayed in a scan line by the unique time delay corresponding to the facet of the rotating mirror used in creating the scan line.
摘要翻译： 一种用于减少由采用多个激光源的扫描系统中的小切割变化引起的扫描线抖动的系统和方法，以及用于产生激光源的定时的传感器。 该系统包括用于确定旋转镜的每个面的唯一时间延迟的控制器，并且控制激光源，使得由每个激光源提供的视频在扫描线中被延迟与旋转的面相对应的唯一时间延迟 用于创建扫描线的镜像。
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公开(公告)号：US20130121713A1
公开(公告)日：2013-05-16
申请号：US13464942
申请日：2012-05-04
IPC分类号： G03G15/04
CPC分类号： G02B26/10 , G03G15/04072 , G03G2215/0145
摘要： A system and method for reducing scan line jitter caused by facet cut variation in scan systems employing a plurality of laser sources and a sensor for generating the timing for the laser sources. The system includes a controller for determining a unique time delay for each facet of the rotating mirror, and controlling the laser sources so that video provided by each laser source is delayed in a scan line by the unique time delay corresponding to the facet of the rotating mirror used in creating the scan line.
摘要翻译： 一种用于减少由采用多个激光源的扫描系统中的小切割变化引起的扫描线抖动的系统和方法，以及用于产生激光源的定时的传感器。 该系统包括用于确定旋转镜的每个面的唯一时间延迟的控制器，并且控制激光源，使得由每个激光源提供的视频在扫描线中被延迟与旋转的面相对应的唯一时间延迟 用于创建扫描线的镜像。
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公开(公告)号：US5798718A
公开(公告)日：1998-08-25
申请号：US854716
申请日：1997-05-12
申请人： Craig Eric Hadady
发明人： Craig Eric Hadady
CPC分类号： H03M7/3086 , H03M7/46
摘要： A method for compressing a data stream, where a first portion of the data stream is read into a window having a history buffer and look-ahead buffer. An index, based on a fourth portion of the data stream in the look-ahead buffer is used to select an entry in a pointer array. An initial entry in a record array is selected based on the pointer array entry. A third portion of the data stream is selected. The third portion is compared to a second portion in the look-ahead buffer. If the third portion does not match the second portion, then a subsequent entry in the record array is selected, and the is designated as the initial entry. These steps are repeated until either the third portion matches the second portion, or no more entries are left in the record array. When there are no more entries left in the record array, the second portion is written to the output file, and the first portion read into the window is incremented by a predetermined amount. When the third portion matches the second portion, the history buffer address of the third portion and a length value, representing how many bytes of the third portion and the second portion matched, are output to the output file, and the first portion read into the window is incremented by the number of bytes matched.
摘要翻译： 一种用于压缩数据流的方法，其中数据流的第一部分被读入具有历史缓冲器和预读缓冲器的窗口中。 基于先行缓冲器中的数据流的第四部分的索引用于选择指针数组中的条目。 基于指针数组条目选择记录数组中的初始条目。 选择数据流的第三部分。 将第三部分与先行缓冲器中的第二部分进行比较。 如果第三部分与第二部分不匹配，则选择记录阵列中的后续条目，并将其指定为初始条目。 重复这些步骤直到第三部分与第二部分匹配，或者在记录阵列中不再有条目。 当记录阵列中没有剩余条目时，第二部分被写入输出文件，并且读入窗口的第一部分增加预定量。 当第三部分与第二部分匹配时，第三部分的历史缓冲器地址和表示第三部分和第二部分匹配的字节的长度值被输出到输出文件，并且第一部分读入 窗口按照匹配的字节数增加。
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4.发明授权Method and system for correcting the linearity error in electrophotographic devices 有权用于校正电子照相设备线性误差的方法和系统公开(公告)号：US08963976B2
公开(公告)日：2015-02-24
申请号：US13230814
申请日：2011-09-12
CPC分类号： B41J2/471
摘要： The invention describes a method and system for correcting linearity error of an electrophotographic device with a reduced number of lenses. The method and system insert additional time-slices in the data being processed by the electrophotographic device. The additional time-slices are inserted in the data in a predefined order based on a plurality of random numbers. The insertion of additional time-slices corrects the linearity error of the electrophotographic device.
摘要翻译： 本发明描述了一种用于校正具有减少数量的透镜的电子照相装置的线性误差的方法和系统。 该方法和系统在由电子照相设备处理的数据中插入额外的时间片。 基于多个随机数，以预定义的顺序将附加的时间片插入到数据中。 附加时间片的插入校正了电子照相设备的线性误差。
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5.发明申请METHOD AND SYSTEM FOR CORRECTING THE LINEARITY ERROR IN ELECTROPHOTOGRAPHIC DEVICES 有权用于校正电子设备中的线性误差的方法和系统公开(公告)号：US20100053298A1
公开(公告)日：2010-03-04
申请号：US12199292
申请日：2008-08-27
IPC分类号： B41J2/47
CPC分类号： B41J2/471
摘要： The invention describes a method and system for correcting linearity error of an electrophotographic device with a reduced number of lenses. The method and system insert additional time-slices in the data being processed by the electrophotographic device. The additional time-slices are inserted in the data in a predefined order based on a plurality of random numbers. The insertion of additional time-slices corrects the linearity error of the electrophotographic device.
摘要翻译： 本发明描述了一种用于校正具有减少数量的透镜的电子照相装置的线性误差的方法和系统。 该方法和系统在由电子照相设备处理的数据中插入额外的时间片。 基于多个随机数，以预定义的顺序将附加的时间片插入到数据中。 附加时间片的插入校正了电子照相设备的线性误差。
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6.发明授权公开(公告)号：US06292507B1
公开(公告)日：2001-09-18
申请号：US09388043
申请日：1999-09-01
IPC分类号： H04B169
CPC分类号： H04B15/04 , H03L7/0898 , H03L7/093 , H03L7/197 , H04B2215/064 , H04B2215/067
摘要： An improved spread spectrum clock generator circuit is provided which automatically compensates for variations in passive component values and system gain and charge pump current in a Phase Locked Loop circuit. The pulse widths of the UP and DOWN outputs of the Phase Frequency Detector are monitored at particular intervals to determine the deviation error of these UP and DOWN signals, as compared to typical or nominal pulse-width durations. After an error is determined in the actual values of the pulse-width durations, the Phase Locked Loop (PLL) system is adjusted depending upon the magnitude and direction of the error signal. Changes in the PLL gain parameters, especially the VCO gain and charge pump current, have a significant effect on the PFD outputs, such that the width of the UP and DOWN signals vary as the frequency changes along the spread spectrum profile. At one portion of the spread spectrum profile, the “peak” (i.e., maximum) pulse width of these UP and DOWN signals will be a function of the spread spectrum's modulation profile and the PLL parameters. In addition to sampling for maximum pulse widths at the profile locations exhibiting peaks and valleys, the actual error profile may also exhibit a similarly large deviation from the target error profile at times just before the occurrence of the maximum peak and minimum peak (or “valley”). While determining precisely where within the profile these other substantial deviations occur is more difficult than monitoring the same signals at their maximum peaks, there are certain advantages to using the alternative locations along the error profile, which are described below.
摘要翻译： 提供了一种改进的扩频时钟发生器电路，其自动补偿锁相环电路中的无源分量值和系统增益和电荷泵电流的变化。 与典型或标称脉冲宽度持续时间相比，以特定间隔监视相位检测器的UP和DOWN输出的脉冲宽度，以确定这些UP和DOWN信号的偏差误差。 在脉冲宽度持续时间的实际值中确定错误之后，根据误差信号的大小和方向来调整锁相环（PLL）系统。 PLL增益参数的变化，特别是VCO增益和电荷泵电流对PFD输出有显着的影响，使得UP和DOWN信号的宽度随着频谱沿扩频谱的变化而变化。 在扩频谱的一部分，这些UP和DOWN信号的“峰值”（即最大）脉冲宽度将是扩频调制曲线和PLL参数的函数。 除了在具有峰值和谷值的轮廓位置处的最大脉冲宽度进行采样之外，实际误差分布也可能在最大峰值和最小峰值（或“谷值”出现之前的时间表现出与目标误差分布类似的大的偏差） “）。 在精确地确定轮廓内的这些其他实质偏差发生的地方比在其最大峰值处监测相同的信号更困难，但是在沿着误差分布的以下描述中使用替代位置有一些优点。
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7.发明授权Method and apparatus for minimizing visual artifacts generated by an electrophotographic machine during imaging 有权用于在成像期间最小化由电子照相机产生的视觉伪影的方法和装置公开(公告)号：US06229555B1
公开(公告)日：2001-05-08
申请号：US09573145
申请日：2000-05-17
IPC分类号： G03G1501
CPC分类号： H04N1/0473 , G06K15/1209 , H04N1/1135 , H04N1/12 , H04N2201/04767 , H04N2201/04787 , H04N2201/04791 , H04N2201/04793 , H04N2201/04796
摘要： A method and apparatus provides for minimizing visual artifacts resulting from laser scan process direction position errors in an electrophotographic machine. The electrophotographic machine has defined therein a process direction, and includes a photoconductive device having an image forming surface. A printhead unit is provided for generating a laser beam, wherein the printhead unit includes optics for scanning the laser beam to form a plurality of scan lines extending across the photoconductive device in a scan direction which traverses the process direction. Adjacent scan lines of the plurality of scan lines are separated by a scan line separation distance. A controller is electrically coupled to the printhead unit for controlling the power of the laser beam during the scanning of an adjacent pair of scan lines to form a synthesized dot which lies at a synthesized position between the adjacent pair of scan lines.
摘要翻译： 一种方法和装置提供了使电子照相机中的激光扫描过程方向位置误差导致的视觉伪像最小化。 电子照相机在其中限定了工艺方向，并且包括具有成像表面的光导器件。 提供了一种用于产生激光束的打印头单元，其中打印头单元包括用于扫描激光束的光学器件，以在穿过该过程方向的扫描方向上形成跨过光电装置延伸的多条扫描线。 多条扫描线的相邻扫描线被扫描线分离距离分开。 控制器电耦合到打印头单元，用于在相邻的一对扫描线的扫描期间控制激光束的功率，以形成位于相邻的一对扫描线之间的合成位置的合成点。
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8.发明授权System and method for reducing scan line jitter in a laser scan unit for an imaging device 有权用于降低成像装置的激光扫描单元中的扫描线抖动的系统和方法公开(公告)号：US08817058B2
公开(公告)日：2014-08-26
申请号：US13464917
申请日：2012-05-04
IPC分类号： B41J2/435 , G03G15/043 , G02B26/10 , G03G15/04
CPC分类号： G02B26/10 , G03G15/04072 , G03G2215/0145
摘要： A system and method for reducing scan line jitter in laser scan systems employing a rotating mirror, including a controller for determining a unique time delay for each mirror facet and controlling laser sources so that video provided by each laser source is delayed in a scan line by the unique time delay corresponding to the mirror facet used in creating the scan line. The controller computes a facet map signature vector corresponding to each mirror facet matches the signature to a previously stored signature and assigns measured distance offset data to the mirror facets based upon the matching.
摘要翻译： 一种用于减少使用旋转镜的激光扫描系统中的扫描线抖动的系统和方法，包括用于确定每个镜面的唯一时间延迟并控制激光源的控制器，使得由每个激光源提供的视频在扫描线中被延迟 与创建扫描线时使用的镜面相对应的唯一时间延迟。 控制器计算与每个镜面相对应的面映射签名矢量，其将签名与先前存储的签名相匹配，并且基于匹配将测量的距离偏移数据分配给镜面。
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公开(公告)号：US20120281996A1
公开(公告)日：2012-11-08
申请号：US13464917
申请日：2012-05-04
IPC分类号： G03G13/04 , G03G15/043
CPC分类号： G02B26/10 , G03G15/04072 , G03G2215/0145
摘要： A system and method for reducing scan line jitter in laser scan systems employing a rotating mirror, including a controller for determining a unique time delay for each mirror facet and controlling laser sources so that video provided by each laser source is delayed in a scan line by the unique time delay corresponding to the mirror facet used in creating the scan line. The controller computes a facet map signature vector corresponding to each mirror facet matches the signature to a previously stored signature and assigns distance offset data to the mirror facets based upon the matching.
摘要翻译： 一种用于减少使用旋转镜的激光扫描系统中的扫描线抖动的系统和方法，包括用于确定每个镜面的唯一时间延迟并控制激光源的控制器，使得由每个激光源提供的视频在扫描线中被延迟 与创建扫描线时使用的镜面相对应的唯一时间延迟。 控制器计算与每个镜面相对应的面映射签名矢量，该矢量面与先前存储的签名匹配，并且基于匹配将距离偏移数据分配给镜面。
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10.发明申请Method and System for Correcting the Linearity Error in Electrophotographic Devices 有权用于校正电子照相设备中线性误差的方法和系统公开(公告)号：US20120002986A1
公开(公告)日：2012-01-05
申请号：US13230814
申请日：2011-09-12
IPC分类号： G03G15/02
CPC分类号： B41J2/471
摘要： The invention describes a method and system for correcting linearity error of an electrophotographic device with a reduced number of lenses. The method and system insert additional time-slices in the data being processed by the electrophotographic device. The additional time-slices are inserted in the data in a predefined order based on a plurality of random numbers. The insertion of additional time-slices corrects the linearity error of the electrophotographic device.
摘要翻译： 本发明描述了一种用于校正具有减少数量的透镜的电子照相装置的线性误差的方法和系统。 该方法和系统在由电子照相设备处理的数据中插入额外的时间片。 基于多个随机数，以预定义的顺序将附加的时间片插入到数据中。 附加时间片的插入校正了电子照相设备的线性误差。
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