专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07116613B2 Optical beam position active sensing and control using satellite beams 有权
标题翻译：使用卫星光束的光束位置主动感测和控制
公开(公告)号：US07116613B2
公开(公告)日：2006-10-03
申请号：US10443184
申请日：2003-05-22
申请人： David L. Hecht , Uma Srinivasan , Robert Matusiak , Robert P. Kowalski , Eric J. Shrader
发明人： David L. Hecht , Uma Srinivasan , Robert Matusiak , Robert P. Kowalski , Eric J. Shrader
IPC分类号： G11B5/09
CPC分类号： G02B7/003 , G02B27/64 , G02F2001/291 , G11B7/08558
摘要： A beam position control system controls a position of a beam directed from a beam source. The beam position control system includes a beam position sensing system that generates one or more satellite beams which are used to determine the position of a main beam. A beam offset computation block determines a relative position of the main beam with respect to a desired main beam position and provides beam offset information to a controller that generates a compensation signal used to adjust the main beam position to the desired main beam position via a beam actuation system.
摘要翻译：光束位置控制系统控制从光束源引导的光束的位置。波束位置控制系统包括波束位置检测系统，其产生用于确定主波束位置的一个或多个卫星波束。波束偏移计算块确定主波束相对于期望的主波束位置的相对位置，并将波束偏移信息提供给控制器，该控制器产生用于经由波束将主波束位置调整到期望主波束位置的补偿信号驱动系统。

2. 发明授权

US5138340A Temperature controlled light source for interlaced printer 失效
标题翻译：用于隔行打印机的温度控制光源
公开(公告)号：US5138340A
公开(公告)日：1992-08-11
申请号：US624117
申请日：1990-12-06
申请人： Robert A. Sprague , Mark S. Bernstein , Robert P. Kowalski , David L. Hecht , David L. Steinmetz , David E. Kizer , Robert L. Thornton
发明人： Robert A. Sprague , Mark S. Bernstein , Robert P. Kowalski , David L. Hecht , David L. Steinmetz , David E. Kizer , Robert L. Thornton
IPC分类号： G06K15/12
CPC分类号： G06K15/12
摘要： A technique for producing pixel patterns at different selected wavelengths. A diode laser is repeatedly pulsed and has its temperature changed from pulse to pulse, which causes the output wavelength to change. This allows pixel patterns to be interlaced by the use of dispersive elements such as prisms in the optical train. A temperature shift of about 15.degree. C. provides a wavelength shift of about 30 angstroms, which is usable. A temperature shift of 20.degree. C.-30.degree. C. or more is preferable. The temperature shifts may be accomplished by supplying specific currents below threshold and above threshold. For two-wavelength operation, the laser is driven at a first bias current below threshold for a first non-illumination interval, at a first pulse current above threshold for a first illumination interval, at a second bias current below threshold for a second non-illumination interval, and a second pulse current above threshold for a second illumination interval. The bias currents are sufficiently different so as to establish different operating temperatures for the illumination intervals. The temperature shifts may also be accomplished at least in part by use of an auxiliary heater.
摘要翻译：用于产生不同选定波长的像素图案的技术。二极管激光器被反复脉冲并且其温度从脉冲变为脉冲，这导致输出波长改变。这允许像素图案通过使用诸如光学列中的棱镜的色散元件来隔行扫描。约15℃的温度偏移提供约30埃的波长位移，这是可用的。温度变化优选为20℃-30℃以上。温度漂移可以通过提供低于阈值和高于阈值的特定电流来实现。对于双波长操作，对于第一非照明间隔，激光器以低于第一非照明间隔的第一偏置电流被驱动，在第一照明间隔的第一脉冲电流高于阈值时，在第二非 - 照明间隔和第二脉冲电流高于第二照明间隔的阈值。偏置电流充分不同，从而为照明间隔建立不同的工作温度。至少部分地通过使用辅助加热器也可以实现温度漂移。

3. 发明授权

US5193122A High speed halftone detection technique 失效
标题翻译：高速半色调检测技术
公开(公告)号：US5193122A
公开(公告)日：1993-03-09
申请号：US621478
申请日：1990-12-03
申请人： Robert P. Kowalski , Dan S. Bloomberg
发明人： Robert P. Kowalski , Dan S. Bloomberg
IPC分类号： G06T7/00 , H04N1/40
CPC分类号： H04N1/40062
摘要： A simple technique for determining and indicating, in real times as an image is scanned, the presence of halftones within a page. in brief, the technique contemplates monitoring a pixel stream, typically on a line basis, determining the proportion of pixel transitions (relative to the overall number of pixel intervals), and controlling the process based on this information. In one embodiment, a numerical value representing such a proportion is compared to a threshold, and a value in excess of the threshold is taken to signify the presence of halftone regions. Based on this, special processing for halftones is enabled or special processing for non-halftone regions is disabled. In a specific hardware embodiment, the pixel monitoring circuitry includes a transition detector (50), an up/down activity counter (52), a threshold selector (55), and a counter controller (57).
摘要翻译：用于在实际上确定和指示作为图像的实时扫描的简单技术中，网页内存在半色调。简而言之，该技术考虑通常以线为基础来监测像素流，确定像素转换的比例（相对于像素间隔的总数），以及基于该信息来控制过程。在一个实施例中，将表示这种比例的数值与阈值进行比较，并且取超过阈值的值来表示半色调区域的存在。基于此，启用了半色调的特殊处理或禁用非半色调区域的特殊处理。在特定的硬件实施例中，像素监视电路包括转换检测器（50），上/下活动计数器（52），阈值选择器（55）和计数器控制器（57）。

4. 发明授权

US5828469A Document scanner with gravitational registration 失效
标题翻译：带引力注册的扫描仪
公开(公告)号：US5828469A
公开(公告)日：1998-10-27
申请号：US822446
申请日：1997-03-21
申请人： Robert P. Kowalski , Carol A. Hankins
发明人： Robert P. Kowalski , Carol A. Hankins
IPC分类号： H04N1/10 , H04N1/193 , H04N1/195 , H04N1/203 , H04N1/04
CPC分类号： H04N1/1043 , H04N1/1017 , H04N1/1048 , H04N1/195 , H04N1/203 , H04N1/2034 , H04N1/193
摘要： A substantially vertical contact scanning assembly records both sides of a document in a memory. In one embodiment, the vertical contact imaging assembly is a pair of two-dimensional sensor arrays. The document is fed between the pair of two-dimensional sensor arrays when they are space apart from each other using gravity. A registration stop positioned under the vertical contact imaging assembly aligns one edge of the document with an edge of the pair of two-dimensional sensor arrays. Once properly registered, the pair of two-dimensional sensor arrays are brought into contact with the document. After recording an electronic representation of both sides of the document, the two-dimensional sensor arrays are spaced apart from each other. Subsequently, the document is released into an output tray using gravity by lowering one edge of the registration stop.
摘要翻译：基本垂直的接触扫描组件将文档的两侧记录在存储器中。在一个实施例中，垂直接触成像组件是一对二维传感器阵列。当它们使用重力彼此间隔开时，文件被馈送在该对二维传感器阵列之间。位于垂直接触成像组件下方的配准停止将原稿的一个边缘与一对二维传感器阵列的边缘对准。一旦正确登记，该对二维传感器阵列与文件接触。在记录文档的两侧的电子表示之后，二维传感器阵列彼此间隔开。随后，通过降低注册停止的一个边缘，使用重力将文档释放到输出托盘中。

5. 发明授权

US06494565B1 Methods and apparatuses for operating a variable impedance acoustic ink printhead 有权
标题翻译：用于操作可变阻抗声学墨水打印头的方法和装置
公开(公告)号：US06494565B1
公开(公告)日：2002-12-17
申请号：US09434981
申请日：1999-11-05
申请人： Richard N. Ellson , Robert P. Kowalski , Babur Hadimioglu , Thanh Duc Truong
发明人： Richard N. Ellson , Robert P. Kowalski , Babur Hadimioglu , Thanh Duc Truong
IPC分类号： B41J2135
CPC分类号： B41J2/04541 , B41J2/04568 , B41J2/0457 , B41J2/04571 , B41J2/04575
摘要： An active controller is provided to control operation of an acoustic printhead in which impedance of the printhead changes with both the active printing row and the distribution of active ejectors in the row. The active controller varies the input power to the printhead in response to active ejectors. Power requirements are insured while also reducing power consumption and maintaining print quality. The determination of RF power is based on the active row, how many ink ejectors are to be switched on, and their position within a row. Look-up tables used to determine proper attenuation or power values are provided in a cascaded fashion.
摘要翻译：提供主动控制器以控制声打印头的操作，其中打印头的阻抗随活动打印行和行中主动喷射器的分布而变化。主动控制器响应于主动喷射器改变打印头的输入功率。电源要求被保险，同时也降低功耗并保持打印质量。 RF功率的确定基于活动行，要打开多少个墨水喷射器以及它们在一行内的位置。用于确定适当衰减或功率值的查找表以级联方式提供。

6. 发明授权

US5640252A Bound document imager with page turner 失效
标题翻译：绑定文件成像器与页面特纳
公开(公告)号：US5640252A
公开(公告)日：1997-06-17
申请号：US570880
申请日：1995-12-12
申请人： William D. Turner , Robert P. Kowalski , Sven E. Karlsson
发明人： William D. Turner , Robert P. Kowalski , Sven E. Karlsson
IPC分类号： B42D9/04 , G03B27/62 , G03G15/00 , H04N1/00 , H04N1/04 , H04N1/195 , H01L27/14
CPC分类号： G03G15/605 , G03B27/62 , H04N1/195 , H04N1/2036 , G03G2215/00282 , H04N2201/0434
摘要： An apparatus for imaging books or other bound documents with minimal stress being applied to the book structure, and for successively imaging and turning pages of a book without the need for manual intervention. The book imager includes a support, for placement of a book in an open position, an imager having opposed imaging surfaces capable of simultaneously imaging the entire exposed, facing adjacent pages of the book in a distortion preventing manner, and a page turner. The support and the imager are relatively movable toward and away from one another, from a first position in which imaging is effected, to a second position in which page turning is effected.
摘要翻译：一种用于将图书或其他装订文件成像的装置用于将图书结构应用到最小的应力成像，并且用于连续成像和翻页的页面而不需要手动干预。本书成像器包括用于将书放置在开放位置的支持件，具有能够以失真防止方式同时成像本书的整个暴露的相对页面的相对成像表面的成像器和页面转换器。支撑件和成像器可从成像所进行的第一位置朝向和远离彼此相对移动到实现翻页的第二位置。

7. 发明授权

US5081597A Process for dynamically equalizing multichannel optical imaging systems 失效
标题翻译：用于动态均衡多通道光学成像系统的过程
公开(公告)号：US5081597A
公开(公告)日：1992-01-14
申请号：US454349
申请日：1989-12-21
申请人： Robert P. Kowalski
发明人： Robert P. Kowalski
IPC分类号： B41J2/44 , B41J2/46 , G06F17/17 , G06K15/12 , H04N1/036 , H04N1/401
CPC分类号： H04N1/4015 , G06K15/027 , G06K15/12 , G06K15/1247 , G06K15/1261 , G06K15/1271
摘要： In accordance with the present invention, correction factors for dynamically equalizing the optical channels of a multichannel optical imaging system, individually or on a group-by-group basis, are recursively computed while the imaging system is idle (i.e., not printing) through the use of an iterative process comprising the steps of: measuring the output intensities of the respective sets of channels, sequentially comparing the measured channel intensities against a system calibrated reference intensity level, and adjusting the correction factor for each set of channels that is found to be operating at an intensity level deviating from the reference intensity level in the direction that is required to reduce the magnitude of the deviation (unless the correction factor value already is at the limit of its dynamic range in that direction). Preferably, the correction factor adjustments are made by incrementing and decrementing their least significant values, thereby maximizing the sensitivity of each iteration of the process to the affect of the immediately preceding iteration on the amount of crosstalk occurring between neighboring sets of channels. For example, the correction factors suitably are multi-bit binary values which are adjusted by incrementing and decrementing their least significant bits (LSB's). The reference intensity level typically is calibrated by measuring the uncorrected output intensities of the respective sets of channels and by then selecting the intensity of the set of channels which is determined to be operating at the lowest valid intensity level for use as the reference intensity. Advantageously, this calibration procedure is repeated on a predetermined schedule for recalibrating the reference level from time-to-time to correct for gradual drift in the optical characteristics of the imaging system.
摘要翻译：根据本发明，在成像系统空闲（即，不打印）时，递归计算多通道光学成像系统的光通道的单独或逐个组合的校正因子使用迭代过程，其包括以下步骤：测量各组信道的输出强度，顺序地将所测量的信道强度与系统校准参考亮度水平进行比较，以及调整每组信道的修正因子在偏离参考强度水平的强度水平上工作，以减小偏差幅度所需的方向（除非校正因子值已经在该方向上的动态范围的极限）。优选地，通过递增和递减它们的最小有效值来进行校正因子调整，从而将过程的每次迭代的灵敏度最大化为紧邻前一迭代对相邻信道组之间发生的串扰量的影响。例如，校正因子适当地是通过递增和递减其最低有效位（LSB）来调整的多位二进制值。参考强度水平通常通过测量各组通道的未校正的输出强度并且然后选择被确定为以最低有效强度水平操作以用作参考强度的通道组的强度来校准。有利地，该校准程序在预定的时间表上重复，以便不时地重新校准参考电平，以校正成像系统的光学特性中的逐渐漂移。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式