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11. 发明授权

US5790166A Modulator for doubling resolution in the fast-scan direction for a laser imager in an electrophotographic printer 失效
标题翻译：用于在电子照相打印机中激光成像器的快速扫描方向上的分辨率加倍的调制器
公开(公告)号：US5790166A
公开(公告)日：1998-08-04
申请号：US895870
申请日：1997-07-17
申请人： Aron Nacman
发明人： Aron Nacman
IPC分类号： G06K15/12 , G02F1/01
CPC分类号： G06K15/1219
摘要： A modulator circuit for use in driving a laser in an electrophotographic laser printer starts with a standard, inexpensive low-frequency pixel clock for timing the modulation of the laser to form an image, and effectively doubles the modulation frequency, thereby allowing spatial resolution to be doubled in the fast-scan direction. An original, low-frequency pixel clock is split, one of the split signals is delayed by a predetermined amount, and the original and delayed pixel clocks are applied to an exclusive OR gate. The modulator of the present invention functions without either a high-frequency original pixel clock or a phase-locked loop.
摘要翻译：用于驱动电子照相激光打印机中的激光器的调制器电路以标准廉价的低频像素时钟开始，用于对激光器的调制进行定时以形成图像，并且有效地将调制频率加倍，由此允许空间分辨率为在快扫方向加倍。原始的低频像素时钟被分割，其中一个分离信号被延迟预定量，原始和延迟的像素时钟被施加到异或门。本发明的调制器在没有高频原始像素时钟或锁相环的情况下起作用。

12. 发明授权

US5444239A Fiber optic scanning beam detector 失效
标题翻译：光纤扫描光束检测器
公开(公告)号：US5444239A
公开(公告)日：1995-08-22
申请号：US217822
申请日：1994-03-25
申请人： Aron Nacman , James J. Appel , Andrew M. Strauch
发明人： Aron Nacman , James J. Appel , Andrew M. Strauch
IPC分类号： G02B26/10 , G02B26/12 , G06K15/12 , H04N1/053 , H04N1/113 , G01J1/20
CPC分类号： G06K15/1219 , G02B26/122 , H04N1/053 , H04N1/1135 , H04N2201/0471 , H04N2201/04712 , H04N2201/04786
摘要： A fiber optic system is used in a laser ROS scanning system to generate a start of scan signal. In one embodiment, a single optical fiber is positioned at the beginning of a scan line sweep. The fiber transmits a portion of a scan beam energy to a photodetector located on a local electronics board. The photodiode generates an output signal which is sent as an input to a high speed comparator. A second input to the comparator is a divided down and delayed analog of the photodetector output signal. The comparator compares the two voltage wave forms and generates electrical signals at the precise time the two wave forms intersect or crossover. The comparator output is used to initiate the SOS signal of a gas or laser diode ROS.
摘要翻译：在激光ROS扫描系统中使用光纤系统来产生扫描信号的开始。在一个实施例中，单个光纤位于扫描线扫描的开始处。光纤将扫描光束能量的一部分传输到位于本地电子板上的光电探测器。光电二极管产生作为输入发送到高速比较器的输出信号。比较器的第二个输入是光电检测器输出信号的分频和延迟模拟。比较器比较两个电压波形，并在两个波形相交或交叉的精确时间产生电信号。比较器输出用于启动气体或激光二极管ROS的SOS信号。

13. 发明授权

US07894094B2 System and method for image rotation 有权
标题翻译：用于图像旋转的系统和方法
公开(公告)号：US07894094B2
公开(公告)日：2011-02-22
申请号：US10946655
申请日：2004-09-22
申请人： Aron Nacman , Daniel A. Mohabir , Lisa M. Schlachter , Dawn M. Lapietra , James P. Guy , Brian R. Caffee
发明人： Aron Nacman , Daniel A. Mohabir , Lisa M. Schlachter , Dawn M. Lapietra , James P. Guy , Brian R. Caffee
IPC分类号： G06F15/00
CPC分类号： G06T3/606 , H04N1/3877
摘要： A system and method to provide 180-degree rotation of image data at full throughput. The system includes a memory access controller that writes bursts of image data into a rotation buffer. The image data is then read out of the rotation buffer in the reverse order from which it was written to thereby accomplish rotation. By alternating the position in the rotation buffer in which the image data is written such that an image is either written into the buffer from top and read from the bottom or written into the buffer from the bottom and read out from the top, a one page rotation buffer of can be used to concurrently process two pages.
摘要翻译：以完全吞吐量提供180度旋转图像数据的系统和方法。该系统包括将图像数据的脉冲串写入旋转缓冲器的存储器存取控制器。然后，图像数据以与之相反的顺序读出旋转缓冲器，从而完成旋转。通过交替写入图像数据的旋转缓冲器中的位置，使得图像被从顶部写入缓冲器并从底部读取或从底部写入缓冲器并从顶部读出，一页旋转缓冲区可用于同时处理两页。

14. 发明授权

US07768678B2 Systems, methods and devices for rotating images 有权
标题翻译：用于旋转图像的系统，方法和装置
公开(公告)号：US07768678B2
公开(公告)日：2010-08-03
申请号：US11433529
申请日：2006-05-15
申请人： Aron Nacman , William David Notovitz , Theresa Michelle Marconi , Brian Richard Caffee , Anthony Paul Lanza , Timothy M. Hunter
发明人： Aron Nacman , William David Notovitz , Theresa Michelle Marconi , Brian Richard Caffee , Anthony Paul Lanza , Timothy M. Hunter
IPC分类号： H04N1/04
CPC分类号： H04N1/3877 , G06T3/606
摘要： An embodiment generally relates a device for rotating images. The device includes an image memory configured to store an image and a plurality of buffers. The plurality of buffers are configured to interface with the image memory to read data words of the image from the image memory and to write rotated data words to the image memory. The device also includes a logic module configured to interface with the plurality of buffers and to micro-rotate and macro-rotate an image based on a selection of three orientations. The logic module is also configured to execute a read of data words from the image memory to a first buffer of the plurality of buffers, a rotation of a data word, and a write of rotated data words from a second buffer of the plurality of buffers to the image memory substantially simultaneously.
摘要翻译：实施例通常涉及用于旋转图像的装置。该设备包括被配置为存储图像和多个缓冲器的图像存储器。多个缓冲器被配置为与图像存储器接口以从图像存储器读取图像的数据字，并将旋转的数据字写入图像存储器。该设备还包括被配置为与多个缓冲器接口并基于三个方向的选择来微转动和宏旋转图像的逻辑模块。逻辑模块还被配置为执行从图像存储器到多个缓冲器中的第一缓冲器的数据字的读取，数据字的旋转以及来自多个缓冲器的第二缓冲器的旋转的数据字的写入基本上同时到图像存储器。

15. 发明授权

US5764377A Video interlace system for multibeam raster output scanner 失效
标题翻译：多波束光栅输出扫描仪的视频隔行扫描系统
公开(公告)号：US5764377A
公开(公告)日：1998-06-09
申请号：US356767
申请日：1994-12-15
申请人： Aron Nacman , Daniel A. Mohabir
发明人： Aron Nacman , Daniel A. Mohabir
IPC分类号： B41J2/44 , G03G15/01 , G06K15/12 , H04N1/04 , H04N1/113 , H04N1/17 , H04N1/40 , H04N1/23 , H04N1/32
CPC分类号： G06K15/1261 , G06K2215/0077 , G06K2215/111
摘要： A raster output scanner data controller reads pixels of an image from an image memory and outputs serially pixel data streams to a raster output scanner. The data controller includes an image memory storing a plurality of pixel data blocks in a scan line order, an image memory controller coupled to the image memory, a plurality of first-in, first-out memories coupled to the image memory controller for storing pixel data blocks corresponding to a plurality of beams, and an image controller coupled to the plurality of first-in, first-out memories. The pixel data blocks are transferred from the image memory to the plurality of first-in, first-out memories. The image controller reads the pixel data blocks from the plurality of first-in, first-out memories, converts the pixel data blocks read from the plurality of first-in, first-out memories into a plurality of pixel data streams and outputs the plurality of pixel data streams to the raster output scanner.
摘要翻译：栅格输出扫描器数据控制器从图像存储器读取图像的像素，并将串行像素数据流输出到光栅输出扫描器。数据控制器包括以扫描行顺序存储多个像素数据块的图像存储器，耦合到图像存储器的图像存储器控制器，耦合到图像存储器控制器的多个先入先出存储器，用于存储像素对应于多个光束的数据块，以及耦合到多个先入先出存储器的图像控制器。像素数据块从图像存储器传送到多个先入先出存储器。图像控制器从多个先入先出存储器读取像素数据块，将从多个先入先出存储器读取的像素数据块转换为多个像素数据流，并输出多个的像素数据流到光栅输出扫描器。

16. 发明授权

US5659414A Means for controlling the power output of laser diodes in a ROS system 失效
标题翻译：用于控制ROS系统中激光二极管的功率输出的装置
公开(公告)号：US5659414A
公开(公告)日：1997-08-19
申请号：US492504
申请日：1995-06-20
申请人： James J. Appel , Aron Nacman , Robert H. Melino
发明人： James J. Appel , Aron Nacman , Robert H. Melino
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , G03B27/72 , G03G15/04 , G03G15/043 , H01S5/026 , H01S5/06 , G02B26/08
CPC分类号： G02B26/127 , G02B26/123
摘要： The present invention provides a means and method for efficiently and automatically monitoring and adjusting the power output of either a single or a dual beam laser diode array used to provide the scanning beams in a ROS system. Collimated light outputs from a collimator lens assembly following either a single or dual beam laser are reflected along an optical path to impinge on one or two photodiodes positioned so as to intercept the reflected light. The photodiode output is proportional to the power output of the laser diode associated with the photodiode. In one multi-beam embodiment, polarization of the laser diode output is controlled so as to ensure that only outputs from an associated laser diode is sensed by an associated photodiode. In another embodiment, a half wave plate is used to rotate the polarization of one of the laser diodes.
摘要翻译：本发明提供了一种用于有效和自动地监视和调整用于在ROS系统中提供扫描光束的单光束或双光束激光二极管阵列的功率输出的方法和方法。来自准直透镜组件的准直光输出随着单光束或双光束激光器被沿着光路反射以照射到一个或两个光电二极管上，以便截取反射光。光电二极管输出与与光电二极管相关的激光二极管的功率输出成正比。在一个多光束实施例中，控制激光二极管输出的极化，以便确保来自相关激光二极管的输出仅由相关的光电二极管感测。在另一个实施例中，使用半波片来旋转激光二极管之一的偏振。

17. 发明授权

US5600126A Method and apparatus for controlling the power output of multiple laser diodes 失效
标题翻译：用于控制多个激光二极管的功率输出的方法和装置
公开(公告)号：US5600126A
公开(公告)日：1997-02-04
申请号：US493182
申请日：1995-06-20
申请人： James J. Appel , Aron Nacman
发明人： James J. Appel , Aron Nacman
IPC分类号： H01S5/068 , H01S5/062 , H01S5/0683 , H01S5/40 , G01J1/32
CPC分类号： H01S5/4025 , H01S5/06236 , H01S5/0683 , H01S5/06832
摘要： The present invention presents an apparatus and method for efficiently and automatically monitoring and adjusting the power output of laser diodes used to provide the scanning beams in a ROS system. Light radiated from the back facet of the laser diode is directed onto at least a pair of back facet photodiodes. The photodiode outputs are proportional to the power output of the laser diode associated with the photodiode. The polarization of the laser diode back facet output is controlled so as to ensure that the only outputs from an associated laser diode is sensed by an associated photodiode. In one embodiment, a half wave plate is used to rotate the polarization of one of the laser diodes and in another embodiment optical fibers efficiently transmit light emitted from the back facets to the photodiode.
摘要翻译：本发明提出了一种用于有效和自动地监视和调整用于在ROS系统中提供扫描光束的激光二极管的功率输出的装置和方法。从激光二极管的后面辐射的光被引导到至少一对后视面光电二极管。光电二极管输出与与光电二极管相关的激光二极管的功率输出成比例。控制激光二极管背面输出的极化，以确保来自相关激光二极管的唯一输出由相关联的光电二极管感测。在一个实施例中，使用半波片来旋转一个激光二极管的偏振，并且在另一实施例中，光纤有效地将从背面发射的光透射到光电二极管。

18. 发明授权

US5381165A Raster output scanner with process direction registration 失效
标题翻译：光栅输出扫描器，具有过程方向注册
公开(公告)号：US5381165A
公开(公告)日：1995-01-10
申请号：US971122
申请日：1992-11-04
申请人： Robert M. Lofthus , Aron Nacman , Stuart A. Schweid
发明人： Robert M. Lofthus , Aron Nacman , Stuart A. Schweid
IPC分类号： H04N1/047 , H04N1/113 , H04N1/12 , H04N1/50 , G01D9/42 , G01D15/06 , G01D15/14
CPC分类号： H04N1/506 , H04N1/0473 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04755
摘要： A method and apparatus is presented for registering a plurality of color images formed on a photoconductive member in a process direction. The registration is enabled by a feedback loop wherein the phase and frequency of start-of-scan signals and a stable reference output signal are compared to produce an error signal representing frequency differences between the rotating polygons associated with each Raster Output Scanner. In one embodiment, the stable reference frequency is generated as a digital value by a microcontroller. In another embodiment, the digital value to be compared with the start-of-scan signal is generated by an encoder which provides a signal representing the motion of the moving photoconductive member. With either reference frequency, an error signal is generated which is applied as a pulse width modulated signal to the polygon drive motors to change the speed and frequency of the associated rotating polygon and, the speed, in turn, changing the SOS signals to complete the feedback loop. The process is iterative with pulse width modulated correction signals being applied until the comparison of the digital values representing the reference frequency and the SOS signals is reduced to zero. In a third embodiment, a phase correction circuit is described to enable subpixel registration.
摘要翻译：提出了一种方法和装置，用于在处理方向上记录形成在感光体上的多个彩色图像。通过反馈环路启用注册，其中比较起始扫描信号和稳定参考输出信号的相位和频率，以产生表示与每个光栅输出扫描器相关联的旋转多边形之间的频率差的误差信号。在一个实施例中，通过微控制器产生稳定的参考频率作为数字值。在另一个实施例中，要与扫描起始信号进行比较的数字值由编码器产生，该编码器提供表示运动的感光体的运动的信号。利用参考频率，产生作为脉冲宽度调制信号被施加到多边形驱动电动机以改变相关旋转多边形的速度和频率的误差信号，并且速度反过来改变SOS信号以完成反馈回路。该过程是迭代的，脉冲宽度调制校正信号被施加直到将表示参考频率和SOS信号的数字值的比较减小到零。在第三实施例中，描述了相位校正电路以实现子像素配准。

19. 发明授权

US5212570A Pixel clock phase locked loop for a laser scanner 失效
标题翻译：激光扫描仪的PIXEL时钟锁相环
公开(公告)号：US5212570A
公开(公告)日：1993-05-18
申请号：US722411
申请日：1991-06-27
申请人： Aron Nacman
发明人： Aron Nacman
IPC分类号： H04N1/113 , H04N1/053
CPC分类号： H04N1/053 , H04N1/1135 , H04N2201/0471 , H04N2201/04772
摘要： A pixel clock phase locked loop for a laser scanner having a rotating multi-faceted polygon receives start-of scan and end-of-scan pulses for each of a plurality of scan lines. A voltage-controlled oscillator outputs a desired frequency of the pixel clock. A desired number of pixels in each scan line is counted, and a pulse is output at the last pixel in the scan line. The end-of-scan pulse and the last pixel pulse are compared, and an output is provided of phase error, the phase error being equal to the difference between the end-of-scan pulse and the last pixel pulse. The phase error for a facet of the polygon is utilized when the facet scans an imaging beam on a next subsequent polygon revolution. The phase error is converted to a voltage, and the phase error voltage is added to a center frequency voltage to generate a composite voltage for controlling the voltage-controlled oscillator.

20. 发明授权

US07933470B2 Darkness control using pattern matching 有权
标题翻译：黑暗控制使用模式匹配
公开(公告)号：US07933470B2
公开(公告)日：2011-04-26
申请号：US12139865
申请日：2008-06-16
申请人： John C. Handley , André M. Blaakman , Anthony P. Lanza , Francis Kapo Tse , Xing Li , Aron Nacman , David J. Lieberman
发明人： John C. Handley , André M. Blaakman , Anthony P. Lanza , Francis Kapo Tse , Xing Li , Aron Nacman , David J. Lieberman
IPC分类号： G06K9/40
CPC分类号： H04N1/40037 , H04N1/4092
摘要： The present invention is a method and apparatus for processing image data to accomplish tuning or adjustment of images, so as to modify at least the darkness thereof, using compact, efficient methods and designs.
摘要翻译：本发明是用于处理图像数据以完成图像调谐或调整的方法和装置，以便使用紧凑，有效的方法和设计来至少修改其暗度。

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