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

US06873977B1 Achieving buyer-seller anonymity for unsophisticated users under collusion amongst intermediaries 失效
标题翻译：通过中介机构的勾结，为不熟悉的用户实现买卖双方匿名
公开(公告)号：US06873977B1
公开(公告)日：2005-03-29
申请号：US09569068
申请日：2000-05-11
申请人： Alok Aggarwal , Pradeep K. Dubey , Charanjit Singh Jutla , Vijay Kumar , Marco Martens , Michael Ira Shub , Charles P. Tresser , Chai Wah Wu
发明人： Alok Aggarwal , Pradeep K. Dubey , Charanjit Singh Jutla , Vijay Kumar , Marco Martens , Michael Ira Shub , Charles P. Tresser , Chai Wah Wu
IPC分类号： G06Q40/00 , H04K1/00 , H04L9/30 , G06F17/60
CPC分类号： G06Q20/12 , G06Q20/382 , G06Q20/383 , G06Q30/0601 , G06Q40/04
摘要： A method and system offer confidential purchase of electronic data which can be used without any need of knowledge in cryptography nor mastery of computer use beyond usual usage of the World Wide Web (WWW). The method and system which guarantee confidentiality as long as there is no collusion between agents working for a large number of reputable companies whose references can be easily checked on the Internet before proceeding to the order. In addition, the method and system allow for guaranteed payment and offer recourse in case of improper delivery.
摘要翻译：一种方法和系统提供电子数据的机密购买，可以在密码学中无需任何知识，也不需要超出通常使用万维网（WWW）的计算机使用。只要在为大量信誉良好的公司工作的代理商之间没有勾结，保证机密性的方法和系统，在进入订单之前，可以在互联网上轻松地检查其参考。此外，方法和系统允许保证支付，并在不当交付的情况下提供追索权。

2. 发明授权

US06834344B1 Semi-fragile watermarks 失效
标题翻译：半脆弱水印
公开(公告)号：US06834344B1
公开(公告)日：2004-12-21
申请号：US09398203
申请日：1999-09-17
申请人： Gaurav Aggarwal , Pradeep K. Dubey , Ashutosh Kulshreshtha , Marco Martens , Charles P. Tresser , Chai W. Wu
发明人： Gaurav Aggarwal , Pradeep K. Dubey , Ashutosh Kulshreshtha , Marco Martens , Charles P. Tresser , Chai W. Wu
IPC分类号： H04L900
CPC分类号： G06T1/005 , G06T1/0042 , H04N1/32144 , H04N1/32154 , H04N2201/327
摘要： A method is presented for marking high-quality digital images with a robust and invisible watermark. It requires the mark to survive and remain detectable and authenticatable through all image manipulations that in themselves do not damage the image beyond useability. These manipulations include JPEG “lossy” compression and, in the extreme, the printing and rescanning of the image. The watermark also has the property that it can detect if the essential contents of the image has changed. The first phase of the method comprises extracting a digest or number N from the image so that N only (or mostly) depends on the essential information content, such that the same number N can be obtained from a scan of a high quality print of the image, from the compressed form of the image, or in general, from the image after minor modifications (introduced inadvertently by processing, noise etc.). The second phase comprises the marking. This can be done in form of an invisible robust watermark, or in form of some visible signature or watermark.
摘要翻译：提出了一种用强大且不可见的水印标记高质量数字图像的方法。它需要标记生存，并通过所有图像操作保持可检测和可认证，这本身不会损害图像超出可用性。这些操作包括JPEG“有损”压缩，在极端情况下，打印和重新扫描图像。该水印还具有可以检测图像的基本内容是否已改变的属性。该方法的第一阶段包括从图像中提取摘要或数字N，使得仅N（或主要地）取决于基本信息内容，使得可以从扫描的高质量打印获得相同数量N 图像，从图像的压缩形式，或一般来说，从稍后修改的图像（通过处理，噪声等无意中引入）。第二阶段包括标记。这可以以不可见的鲁棒水印的形式或以一些可见的签名或水印的形式来完成。

3. 发明授权

US07215445B2 Method and apparatus to correct distortion of document copies 失效
标题翻译：纠正文件副本失真的方法和装置
公开(公告)号：US07215445B2
公开(公告)日：2007-05-08
申请号：US11145968
申请日：2005-06-07
申请人： Gordon W. Braudaway , Frank P. Giordano , Marco Martens , Charles P. Tresser , Chai Wah Wu , Charles A. Micchelli
发明人： Gordon W. Braudaway , Frank P. Giordano , Marco Martens , Charles P. Tresser , Chai Wah Wu , Charles A. Micchelli
IPC分类号： G06K15/00
CPC分类号： G06K9/3283 , H04N1/00002 , H04N1/00045 , H04N1/0005 , H04N1/00082 , H04N1/00087 , H04N1/00092 , H04N2201/0434
摘要： Pages of books are copied without distortion due to curvature of the page near the book binding or the distortion in a copied page is corrected using the spacing of equidistant bars on tape strips applied to the top and bottom edges of a page before copying. The tape is preferably transparent and rather narrow and easily attached to a page to be copied. The first step in the distortion correction procedure is to locate the bars at the top and bottom of the page. The distortion of the spacing between the imaged bars is computed based on the known distance between the equidistant bars. The computed distortion of the spacing is then input to a distortion correction algorithm. The output of the distortion correction algorithm generates a corrected image. This image may also optionally delete the bars so that they are not printed in the copy. The corrected image is then copied.
摘要翻译：书籍的页面由于书籍装订附近的页面的曲率而被复制而不会变形，或者使用应用于复印之前的页面的顶部和底部边缘上的带条上的等距条形的间距来校正复印页面中的失真。胶带优选是透明的并且相当窄并且容易地附着到要复印的页面上。失真校正过程的第一步是将页面的顶部和底部定位。基于等距棒之间的已知距离来计算成像条之间的间距的变形。然后将计算的间隔的失真输入到失真校正算法。失真校正算法的输出产生校正图像。该图像还可以选择性地删除条形，使得它们不被打印在副本中。然后复制校正的图像。

4. 发明授权

US06954290B1 Method and apparatus to correct distortion of document copies 失效
标题翻译：纠正文件副本失真的方法和装置
公开(公告)号：US06954290B1
公开(公告)日：2005-10-11
申请号：US09708517
申请日：2000-11-09
申请人： Gordon W. Braudaway , Frank P. Giordano , Marco Martens , Charles P. Tresser , Chai Wah Wu , Charles A. Micchelli
发明人： Gordon W. Braudaway , Frank P. Giordano , Marco Martens , Charles P. Tresser , Chai Wah Wu , Charles A. Micchelli
IPC分类号： G06K9/03 , G06K9/32 , G06K9/78 , G06K15/00 , G06T5/00 , H04N1/409
CPC分类号： G06K9/3283 , H04N1/00002 , H04N1/00045 , H04N1/0005 , H04N1/00082 , H04N1/00087 , H04N1/00092 , H04N2201/0434
摘要： Pages of books are copied without distortion due to curvature of the page near the book binding or the distortion in a copied page is corrected using the spacing of equidistant bars on tape strips applied to the top and bottom edges of a page before copying. The tape is preferably transparent and rather narrow and easily attached to a page to be copied. The first step in the distortion correction procedure is to locate the bars at the top and bottom of the page. The distortion of the spacing between the imaged bars is computed based on the known distance between the equidistant bars. The computed distortion of the spacing is then input to a distortion correction algorithm. The output of the distortion correction algorithm generates a corrected image. This image may also optionally delete the bars so that they are not printed in the copy. The corrected image is then copied.
摘要翻译：书籍的页面由于书籍装订附近的页面的曲率而被复制而不会变形，或者使用应用于复印之前的页面的顶部和底部边缘上的带条上的等距条形的间距来校正复印页面中的失真。胶带优选是透明的并且相当窄并且容易地附着到要复印的页面上。失真校正过程的第一步是将页面的顶部和底部定位。基于等距棒之间的已知距离来计算成像条之间的间距的变形。然后将计算的间隔的失真输入到失真校正算法。失真校正算法的输出产生校正图像。该图像还可以选择性地删除条形，使得它们不被打印在副本中。然后复制校正的图像。

5. 发明授权

US6055065A Printer independent halftone image rendering 失效
标题翻译：打印机独立的半色调图像渲染
公开(公告)号：US6055065A
公开(公告)日：2000-04-25
申请号：US132881
申请日：1998-08-12
申请人： Ravishankar Rao , Gerhard Robert Thompson , Charles P. Tresser , Chai Wah Wu
发明人： Ravishankar Rao , Gerhard Robert Thompson , Charles P. Tresser , Chai Wah Wu
IPC分类号： H04N1/405 , H04N1/407 , G06F15/00
CPC分类号： H04N1/405 , H04N1/4078
摘要： A method and apparatus for matching the print outputs of two printers having different characteristics. For the purpose of laser printing, or more generally for reproduction on any printing device with limited number of printing levels, a color or grayscale image has to be transformed into an array of printing decisions at each pixel of the output image. Sometimes this array is the only available representation of the original image. One may desire to print this array on a printer with different characteristics from the printer for which the array was originally prepared. The method and apparatus solve this problem by generating a printing decision matrix which takes into account the differences between the two printers.
摘要翻译：一种用于匹配具有不同特征的两台打印机的打印输出的方法和装置。为了激光打印的目的，或者更通常地，在具有有限数量的打印级别的任何打印设备上再现，颜色或灰度图像必须被变换成输出图像的每个像素处的打印决定的阵列。有时这个数组是原始图像的唯一可用表示。可能希望在具有与原始准备阵列的打印机不同的特征的打印机上打印该阵列。该方法和装置通过产生考虑到两个打印机之间的差异的打印决策矩阵来解决这个问题。

6. 发明授权

US5946455A Model based error diffusion with correction propagation 失效
标题翻译：基于模型的误差扩散与校正传播
公开(公告)号：US5946455A
公开(公告)日：1999-08-31
申请号：US942624
申请日：1997-10-02
申请人： Charles P. Tresser , Chai Wah Wu
发明人： Charles P. Tresser , Chai Wah Wu
IPC分类号： H04N1/405 , G06F15/00
CPC分类号： H04N1/4053
摘要： A printing method and apparatus takes into account the errors in the amount of black due to dot shape and size at the pixel where these errors occur, propagates corrections of these errors in order to preserve the logics of error diffusion, and permits a trade-off between completeness of the correction and computational time. The method and apparatus corrects for the actual shape of the printer dots in most error diffusion methods usable in digital halftoning.
摘要翻译：打印方法和装置考虑到由于这些错误发生的像素处的点形状和大小引起的黑色量的误差，传播这些误差的校正以保持误差扩散的逻辑，并且允许权衡在校正的完整性和计算时间之间。该方法和装置在可用于数字半色调的大多数误差扩散方法中校正打印机点的实际形状。

7. 发明授权

US07100050B1 Secured signal modification and verification with privacy control 失效
标题翻译：安全信号修改和验证与隐私控制
公开(公告)号：US07100050B1
公开(公告)日：2006-08-29
申请号：US09571359
申请日：2000-05-15
申请人： Don Coppersmith , Frederick C. Mintzer , Charles P. Tresser , Samuel M. Weber , Chai Wah Wu , Minerva Ming-Yee Yeung
发明人： Don Coppersmith , Frederick C. Mintzer , Charles P. Tresser , Samuel M. Weber , Chai Wah Wu , Minerva Ming-Yee Yeung
IPC分类号： H04L9/00 , H04N7/16
CPC分类号： G06T1/0064 , H04N1/32144 , H04N1/32213 , H04N1/32309 , H04N21/23892 , H04N21/8358 , H04N2201/3214 , H04N2201/3215 , H04N2201/3225 , H04N2201/3226 , H04N2201/3233 , H04N2201/3235 , H04N2201/327
摘要： A watermarking scheme is provided that allows the watermarked image to be authenticated by an authentication agent without revealing the human-readable content of the image. There is disclosed an approach that combines privacy control with watermarking and authentication mechanisms. The watermark can be made to be imperceptible to humans. Public key cryptography allows the authentication agent to authenticate without being able to watermark an image. Watermark information may also be encoded in a vector graphics image that includes at least one stroke defined by coordinate values of an ordered sequence of points. This may be obtained by providing watermark information as a bit sequence, identifying one or more redundant properties of the image, modifying the redundant properties based upon the bit sequence to generate a representation of the image and storing the representation of the image for subsequent use.
摘要翻译：提供了一种水印方案，其允许水印图像由认证代理认证，而不暴露图像的人可读内容。公开了一种将隐私控制与水印和认证机制相结合的方法。水印可以被人看不到。公共密钥加密允许认证代理进行身份验证，而无法对图像进行水印。水印信息也可以被编码在矢量图形图像中，该矢量图形图像包括由有序序列的坐标值定义的至少一个笔画。这可以通过提供水印信息作为比特序列，识别图像的一个或多个冗余属性，基于比特序列修改冗余属性来生成图像的表示并存储用于后续使用的图像的表示来获得。

8. 发明授权

US6069955A System for protection of goods against counterfeiting 失效
标题翻译：保护商品防伪制度
公开(公告)号：US6069955A
公开(公告)日：2000-05-30
申请号：US60026
申请日：1998-04-14
申请人： Don Coppersmith , Claude A. Greengard , Charles P. Tresser , Chai Wah Wu
发明人： Don Coppersmith , Claude A. Greengard , Charles P. Tresser , Chai Wah Wu
IPC分类号： G09C5/00 , H04L9/32 , H04L9/00
CPC分类号： G06Q10/087 , G06Q20/208 , G09C5/00 , H04L9/3226 , H04L2209/56 , H04L2209/608
摘要： A visible seal or label containing a serial number is placed in plain view on the product packaging. The visible label contains the serial number as well as a first public key encrypted version of the serial number. A second or hidden label inside of the package has thereon a second a second encrypted version of the serial number made using a second public key. The hidden label may be secured inside of the package out of sight or may be placed on the back of the visible label and therefore viewable through a transparent case when opened or visible when peeled off. The private keys are known only to the manufacturer. Using a corresponding public key provided by the manufacturer, the consumer, law enforcement agent, or customs inspector can verify that the encrypted version matches the serial number. An advantage to this method is that only the manufacturer can produce matching pairs. Moreover, using a point of sale machine equipped with the public key the sales clerk can authenticate the product in front of the consumer at point of purchase. Additionally, in the case of a CD or other digital medium, the hidden label may comprise a digital watermark of the encrypted serial number such that a consumer, law enforcement agency, or customs inspector can readily detect a counterfeit product.
摘要翻译：包含序列号的可见密封或标签放在产品包装上的平面图中。可见标签包含序列号以及序列号的第一个公钥加密版本。包装内部的第二个或隐藏的标签上具有使用第二公钥制作的序列号的第二个第二加密版本。隐藏的标签可以固定在包装内部的视线之外，或者可以被放置在可见标签的背面上，并且因此当被剥离时打开或可见时通过透明外壳可以看到。私钥只有制造商才知道。使用制造商提供的相应公钥，消费者，执法人员或海关检查员可以验证加密版本是否符合序列号。该方法的优点在于只有制造商可以生成匹配对。此外，使用配有公钥的销售点销售员可以在购买点对消费者面前的产品进行认证。此外，在CD或其他数字媒体的情况下，隐藏的标签可以包括加密序列号的数字水印，使得消费者，执法机构或海关检查员可以容易地检测到假冒产品。

9. 发明授权

US5946370A System and method for accessing the three-dimensional geometry of large objects using X-ray based method subject to limitations on radiation doses 失效
标题翻译：使用基于X射线的方法对受限于辐射剂量的大对象的三维几何进行访问的系统和方法
公开(公告)号：US5946370A
公开(公告)日：1999-08-31
申请号：US62276
申请日：1998-04-15
申请人： Roy Lee Adler , Nogah Haramati , Alan David Kalvin , Joseph Y. Margulies , Charles P. Tresser , Chai Wah Wu
发明人： Roy Lee Adler , Nogah Haramati , Alan David Kalvin , Joseph Y. Margulies , Charles P. Tresser , Chai Wah Wu
IPC分类号： G06T11/00 , G06T17/00 , A61B6/03
CPC分类号： G06T17/00 , G06T11/006 , G06T2211/436 , Y10S378/901
摘要： A computer system and method solve the problem of getting a useful three dimensional representation of an object like the spine using a small amount of data. This is done by gathering and combining three dimensional data in the form of computer tomography (CT) scans of a patient's bones with two dimensional data consisting of CT scout images (or scouts), which are digital two dimensional X-ray images that can be produced by a CT scanner. The main features of spinal deformation are captured by combining the two dimensional data from CT scouts and the three-dimensional information from the CT scans using simple modeling of vertebrae. Scouts are usually used to monitor CT scan acquisition. Here, they are also used as an essential source of data.
摘要翻译：计算机系统和方法解决了使用少量数据来获得像脊柱的对象有用的三维表示的问题。这是通过收集和组合患者骨骼的计算机断层摄影（CT）扫描形式的三维数据与由CT侦察图像（或侦察器）组成的二维数据来完成的，这些数据是可以是数字二维X射线图像由CT扫描仪产生。脊柱变形的主要特征是通过使用简单的椎骨建模结合来自CT侦察的二维数据和来自CT扫描的三维信息来捕获。侦察兵通常用于监测CT扫描采集。在这里，它们也被用作数据的重要来源。

10. 发明授权

US5943477A Microlocal calibration of digital printers 失效
标题翻译：数字打印机的微本地校准
公开(公告)号：US5943477A
公开(公告)日：1999-08-24
申请号：US85094
申请日：1998-05-26
申请人： Ravishankar Rao , Gerhard Robert Thompson , Charles P. Tresser , Chai Wah Wu
发明人： Ravishankar Rao , Gerhard Robert Thompson , Charles P. Tresser , Chai Wah Wu
IPC分类号： H04N1/405 , H04N1/407 , G06F15/00 , H04N1/46
CPC分类号： H04N1/405 , H04N1/4078
摘要： A method and apparatus to calibrate a printer which do not depend on geometric assumptions on the printed dots. The method takes account of the fundamentally probabilistic nature of the process of printing any dot on some types of printers such as laser printers. It allows estimating the probability distribution of what gets printed at each pixel depending on the local configuration of dots to be printed in such a way that only a limited number of tests need to be done, while no artificial cutoff is introduced on the size of local configurations to be taken into account. The calibration method can be applied to many problems encountered in digital printing, and permits computing printer dependent calibration of a dithering method without need for further direct measurements.
摘要翻译：校准不依赖于打印点上的几何假设的打印机的方法和装置。该方法考虑到在某些类型的打印机（例如激光打印机）上打印任何点的过程的根本概率性质。它允许根据要打印的点的本地配置来估计在每个像素处打印什么的概率分布，使得仅需要进行有限数量的测试，而在本地的大小上没有引入人工截止需要考虑的配置。校准方法可以应用于数字打印中遇到的许多问题，并允许计算打印机相关的抖动方法的校准，而无需进一步的直接测量。

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