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1. 发明授权

US5949055A Automatic geometric image transformations using embedded signals 失效
标题翻译：使用嵌入式信号的自动几何图像变换
公开(公告)号：US5949055A
公开(公告)日：1999-09-07
申请号：US956839
申请日：1997-10-23
申请人： David J. Fleet , David J. Heeger , Todd A. Cass , David L. Hecht
发明人： David J. Fleet , David J. Heeger , Todd A. Cass , David L. Hecht
IPC分类号： G06T1/00 , H04N1/32 , G06K7/12
CPC分类号： G06T1/0028 , G06T1/0064 , H04N1/32203 , H04N1/32208 , H04N1/32229 , H04N1/32309 , G06T2201/0051 , G06T2201/0083 , G06T2201/0202 , G06T2201/0601 , H04N2201/3233 , H04N2201/327
摘要： An acquired (e.g., scanned) image contains an imperceptible periodic signal component (e.g., a sinusoid), decoding of which can be used to automatically determine a linear geometric relationship between the acquired image and the original image in which the signal was embedded, without having the original image available during the decoding process. This known geometric relationship allows for linear geometric properties of the acquired image, such as alignment and scaling, to be automatically matched with those of the original image so that the acquired image may be automatically oriented and scaled to the size of the original image. The embedded periodic signals produce a distinct pattern of local peak power concentrations in a spatial frequency amplitude spectrum of the acquired image. Using geometric constraint information about the embedded signals when the signals were originally embedded in the image, the locations and spatial frequencies of the signals are decoded from the image, providing a linear mapping between the peak power concentrations of the acquired and original image spatial frequency amplitude spectra. This linear mapping can be used to compute the linear geometric relationship between the two images. In an illustrated embodiment, the acquired image contains a set of sinusoidal signals that act as a grid. Decoding of the sinusoids does not require the original image, only information about the predetermined geometric relationship of the embedded sinusoids.
摘要翻译：获取的（例如，扫描的）图像包含不可察觉的周期性信号分量（例如，正弦曲线），其解码可用于自动确定所获取的图像与其中嵌入信号的原始图像之间的线性几何关系，而没有在解码过程中可以获得原始图像。这种已知的几何关系允许所获取的图像的线性几何属性（例如对准和缩放）自动与原始图像的几何属性匹配，使得所获取的图像可以被自动定向并且缩放到原始图像的尺寸。嵌入的周期信号在所获取的图像的空间频率幅度谱中产生局部峰值功率浓度的不同图案。当信号最初嵌入到图像中时，使用关于嵌入信号的几何约束信息，从图像中解码信号的位置和空间频率，从而提供所获取的和原始图像空间频率幅度的峰值功率浓度之间的线性映射光谱。该线性映射可用于计算两个图像之间的线性几何关系。在所示实施例中，所获取的图像包含用作网格的一组正弦信号。正弦曲线的解码不需要原始图像，只有关于嵌入的正弦曲线的预定几何关系的信息。

2. 发明授权

US06970259B1 Systems and methods for forgery detection and deterrence of printed documents 失效
标题翻译：用于伪造检测和威慑打印文件的系统和方法
公开(公告)号：US06970259B1
公开(公告)日：2005-11-29
申请号：US09722362
申请日：2000-11-28
申请人： Teresa F. Lunt , Matthew K. Franklin , David L. Hecht , Thomas A. Berson , Mark J. Stefik , R. Drew Dean , Alan G. Bell , Thomas M. Breuel , Todd A. Cass , Douglas N. Curry , Daniel H. Greene , Robert T. Krivacic
发明人： Teresa F. Lunt , Matthew K. Franklin , David L. Hecht , Thomas A. Berson , Mark J. Stefik , R. Drew Dean , Alan G. Bell , Thomas M. Breuel , Todd A. Cass , Douglas N. Curry , Daniel H. Greene , Robert T. Krivacic
IPC分类号： G06F21/00 , G06K1/00 , G06T1/00 , H04N1/32
CPC分类号： H04N1/3232 , G06F21/608 , G06T1/0028 , G06T1/0071 , H04N1/32144 , H04N1/32331 , H04N1/32529 , H04N2201/323 , H04N2201/3235 , H04N2201/3239 , H04N2201/3246
摘要： A print management system includes a policy that determines a protection level for a document to be printed. The document is printed using forgery detection and deterrence technologies, such as fragile and robust watermarks, glyphs, and digital signatures, that are appropriate to the level of protection determined by the policy. A plurality of printers are managed by a print management system. Each printer can provide a range of protection technologies. The policy determines the protection technologies for the document to be printed. The print management system routes the print job to a printer that can apply the appropriate protections and sets the appropriate parameters in the printer. Copy evidence that can establish that a document is a forgery and/or tracing information that identifies the custodian of the document and restrictions on copying of the document and use of the information in the document are included in the watermark that is printed on the document. A document can be verified as an original or established as a forgery by inspecting the copy evidence and/or tracing information in the watermark.
摘要翻译：打印管理系统包括确定要打印的文档的保护等级的策略。该文件使用伪造检测和威慑技术打印，例如脆弱和鲁棒的水印，字形和数字签名，这些技术适用于由策略确定的保护级别。多个打印机由打印管理系统管理。每台打印机都可以提供一系列保护技术。该政策决定了要打印的文档的保护技术。打印管理系统将打印作业路由到可应用适当保护的打印机，并在打印机中设置适当的参数。复印证明文件是伪造和/或跟踪信息，用于标识文件的保管人，复制文件的限制和文档中的信息的使用被包含在打印在文档上的水印中。文档可以通过检查水印中的复制证据和/或跟踪信息来验证为原件或伪造成伪造。

3. 发明申请

US20090262377A1 System And Method For Calibrating A Document Processing Device From A Composite Document 有权
标题翻译：用于从复合文件校准文档处理设备的系统和方法
公开(公告)号：US20090262377A1
公开(公告)日：2009-10-22
申请号：US12494192
申请日：2009-06-29
申请人： David L. Hecht
发明人： David L. Hecht
IPC分类号： G06F15/00
CPC分类号： G06K7/143 , G06K9/036 , G06K19/06009 , G06T5/006
摘要： A system and computer-implemented method for calibrating a document processing device from a composite document is disclosed. A composite document including human-readable content and machine-readable code marks is input into a document processing device. The machine-readable code marks are decoded to identify at least one spatial pointer including at least one nominal property of at least a portion of the human-readable content. The at least one nominal property is compared to an input property of the human-readable content. One or more distortions in the input property compared to the at least one nominal property are identified. The document processing device is calibrated based on the identified distortions.
摘要翻译：公开了一种用于从复合文档校准文档处理设备的系统和计算机实现的方法。包括人可读内容和机器可读代码标记的复合文档被输入到文档处理设备中。对机器可读代码标记进行解码以识别包括至少一部分人类可读内容的至少一个标称属性的至少一个空间指针。将至少一个标称属性与人可读内容的输入属性进行比较。识别与至少一个标称特性相比，输入属性中的一个或多个失真。基于所识别的失真校准文档处理设备。

4. 发明授权

US06993655B1 Record and related method for storing encoded information using overt code characteristics to identify covert code characteristics 失效
标题翻译：用于使用公开代码特征存储编码信息以识别隐蔽代码特征的记录和相关方法
公开(公告)号：US06993655B1
公开(公告)日：2006-01-31
申请号：US09467509
申请日：1999-12-20
申请人： David L. Hecht , John Lennon , Ralph Merkle
发明人： David L. Hecht , John Lennon , Ralph Merkle
IPC分类号： H04L9/00 , G06K7/10 , G06K19/06 , G06K9/00
CPC分类号： G06K7/143 , G06K19/06009 , G06K19/14
摘要： A record and related method is provided for storing encoded information comprising a storage media, first marks on the storage media having a covert code characteristic, with the first marks conveying a covertly marked code and second marks preferably having an overt code characteristic which convey a second overtly marked code useful in decoding the covertly marked code.
摘要翻译：提供了一种记录和相关方法，用于存储包括存储介质的编码信息，具有隐蔽代码特性的存储介质上的第一标记，其中第一标记传送隐蔽标记的代码，并且优选地具有传达第二代码的公开代码特性的第二标记明显标记的代码对解码隐蔽标记代码有用。

5. 发明授权

US06935562B2 Operations on images having glyph carpets 失效
标题翻译：具有字形地毯的图像操作
公开(公告)号：US06935562B2
公开(公告)日：2005-08-30
申请号：US09456105
申请日：1999-12-06
申请人： David L. Hecht , L. Noah Flores , Matthew G. Gorbet
发明人： David L. Hecht , L. Noah Flores , Matthew G. Gorbet
IPC分类号： G06F3/03 , G06F3/033 , G06T3/00 , G06K7/14
CPC分类号： G06F3/0317 , G06F3/0321
摘要： A system and method for generating information based on decoded embedded data from a substrate is implemented by reading embedded data from a substrate, decoding the embedded data to determine registration of the substrate relative to a reference in an apparatus, and developing and presenting human-sensible information based on the registration information. In one embodiment, the human-sensible information is visual information registered with the substrate. The human-sensible information may also comprise, for example, tactile, audible, or other sensory information.
摘要翻译：通过从衬底读取嵌入的数据，对嵌入的数据进行解码以确定衬底相对于设备中的参考的配准，以及开发和呈现人为敏感的系统和方法，用于基于来自衬底的解码的嵌入数据生成信息的系统和方法信息基于注册信息。在一个实施例中，人类敏感信息是与基板一起登记的视觉信息。人类敏感的信息还可以包括例如触觉，听觉或其他感觉信息。

6. 发明授权

US5901224A Quasi-reprographics with variable embedded data with applications to copyright management, and distribution control 失效
标题翻译：具有可变嵌入式数据的准重新格式，应用于版权管理和分发控制
公开(公告)号：US5901224A
公开(公告)日：1999-05-04
申请号：US734570
申请日：1996-10-21
申请人： David L. Hecht
发明人： David L. Hecht
IPC分类号： G06K19/10 , G06K1/12 , G06K17/00 , G06T1/00 , H04N1/00 , H04N1/32 , H04N1/387 , H04L9/00
CPC分类号： H04N1/32203 , H04N1/32208 , H04N1/32229 , H04N2201/3233 , H04N2201/327 , H04N2201/3271 , H04N2201/3274
摘要： A method and apparatus for quasi-reprographically replicating a source document. The source document is digitized, appropriate locations for embedded code are detected, and any embedded code located in the digitized document along with the detected locations are forwarded to a decoder. The decoder forwards the decoded information to a control unit which processes this information and forwards it to a encoder whereafter it is inserted in the digitized document. The hardcopy replication of the source document being substantially visually identical to the source document, even though new or additional embedded machine-readable data has been added or existing data has been changed. The process occurs without intervention by an operator and without knowledge of the operator producing the replicated documents.
摘要翻译：一种用于准备复制源文档的方法和装置。源文档被数字化，检测到用于嵌入代码的适当位置，并且位于数字化文档中的任何嵌入代码以及检测到的位置被转发到解码器。解码器将解码的信息转发到控制单元，该控制单元处理该信息并将其转发到编码器，然后将其插入到数字化文档中。即使添加了新的或附加的嵌入式机器可读数据或已经更改了现有数据，源文档的硬拷贝复制基本上与源文档完全相同。该过程在没有操作者干预的情况下进行，并且不知道操作者产生复制的文档。

7. 发明授权

US5631686A Method to provide optimum optical contrast for registration mark detection 失效
标题翻译：为对准标记检测提供最佳光学对比度的方法
公开(公告)号：US5631686A
公开(公告)日：1997-05-20
申请号：US168300
申请日：1993-12-17
申请人： Vittorio Castelli , David L. Hecht
发明人： Vittorio Castelli , David L. Hecht
IPC分类号： G03G15/00 , G03G15/01 , G03G15/36 , B41J2/385 , G03G21/00
CPC分类号： G03G15/0194 , G03G2215/0109 , G03G2215/0161
摘要： A method of achieving optimum optical contrast for detecting registration marks in a multicolor electrophotographic printing machine. The reflectivity of the image carrying member which is usually an intermediate transfer belt is determined. The reflectivity of each of the toners is then determined. If one of the toners has a contrasting reflectivity, while the remaining toners do not contrast then a uniform field of the contrasting toner is imaged and developed and the registration marks for the other toner colors are then developed on top of the uniform field. A void in the field in the shape of the other toner marks is used as the registration mark for the contrasting toner. If all of the toners have a contrasting reflectivity with the belt, the registration marks are imaged and developed directly on the belt.
摘要翻译：一种在多色电子照相印刷机中实现最佳光学对比度以检测对准标记的方法。确定通常为中间转印带的图像承载部件的反射率。然后确定每个调色剂的反射率。如果一个调色剂具有对比度的反射率，而剩余的调色剂不对比，则对比色调剂的均匀场被成像和显影，然后在均匀场的顶部上显影其它调色剂颜色的对准标记。使用其他调色剂标记形状的场中的空隙作为对比色调色剂的对准标记。如果所有的调色剂与皮带都具有对比度的反射率，则对准标记直接在皮带上成像和显影。

8. 发明授权

US5589870A Spot profile control using fractional interlace factors in a polygon ROS 失效
$Spot profile control using fractional interlace factors in a polygon ROS$
标题翻译：在多边形ROS中使用分数交错因子的斑点轮廓控制
公开(公告)号：US5589870A
公开(公告)日：1996-12-31
申请号：US332175
申请日：1994-10-31
申请人： Douglas N. Curry , David L. Hecht
发明人： Douglas N. Curry , David L. Hecht
IPC分类号： B41J2/44 , B41J2/47 , G02B26/10 , H04N1/107 , H04N1/113 , H04N1/191 , H04N1/40 , B41J2/45 , B41J2/455
CPC分类号： H04N1/40037 , B41J2/473 , H04N1/1912 , H04N1/1135
摘要： An image forming apparatus and method use interlace scanning of plural light beams by deflecting the plural beams with a rotating polygon onto a recording medium. Corrections are made to the scan envelope to compensate for errors due to perceived imperfections in the spot profile or aberrations in the optical and mechanical systems used to scan the spot. The corrections are performed by adjusting intensity of gaussian components of the envelope according to a look up table.
摘要翻译：图像形成装置和方法使用旋转多边形将多个光束偏转到记录介质上来进行多个光束的隔行扫描。对扫描包络进行校正，以补偿由于光斑轮廓中感知到的缺陷或用于扫描斑点的光学和机械系统中的像差造成的误差。通过根据查找表调整信封的高斯分量的强度来进行校正。

9. 发明授权

US5486686A Hardcopy lossless data storage and communications for electronic document processing systems 失效
标题翻译：用于电子文档处理系统的硬拷贝无损数据存储和通信
公开(公告)号：US5486686A
公开(公告)日：1996-01-23
申请号：US887563
申请日：1992-05-18
申请人： Frank Zdybel, Jr. , Henry W. Sang, Jr. , Jan O. Pedersen , Z. E. Smith, III , D. A. Henderson, Jr. , David L. Hecht , Dan S. Bloomberg
发明人： Frank Zdybel, Jr. , Henry W. Sang, Jr. , Jan O. Pedersen , Z. E. Smith, III , D. A. Henderson, Jr. , David L. Hecht , Dan S. Bloomberg
IPC分类号： G06F17/21 , G06F17/30 , G06F21/24 , G06Q10/10 , H04N1/32 , G06F15/20
CPC分类号： H04N1/32133 , G06F17/30011 , G06Q10/10 , H04N2201/3204 , H04N2201/3205 , H04N2201/3214 , H04N2201/3226 , H04N2201/3232 , H04N2201/3233 , H04N2201/3242 , H04N2201/3269 , H04N2201/3271
摘要： Machine readable electronic domain definitions of part or all of the electronic domain descriptions of hardcopy documents and/or of part or all of the transforms that are performed to produce and reproduce such hardcopies documents are encoded in codes that are printed on such documents, thereby permitting the electronic domain descriptions of such documents and/or such transforms to be recovered more robustly and reliably when the information carried by such documents is transformed from the hardcopy domain to the electronic domain.
摘要翻译：用于制作和复制这些复印件的硬拷贝文件和/或部分或全部变换的部分或全部电子域描述的机读电子域定义以打印在这些文件上的代码进行编码，从而允许当这些文件所携带的信息从硬拷贝域转变为电子域时，对这些文档和/或这种转换的电子域描述被更加鲁棒和可靠地恢复。

10. 发明授权

US5255118A Electrooptic TIR light modulator image bar having electrode length for optimizing spatial frequency response 失效
标题翻译：具有用于优化空间频率响应的电极长度的电光TIR光调制器图像棒
公开(公告)号：US5255118A
公开(公告)日：1993-10-19
申请号：US815464
申请日：1991-12-31
申请人： David L. Hecht
发明人： David L. Hecht
IPC分类号： G02B27/54 , B41J2/44 , G02F1/03 , G02F1/315 , G03G15/04 , G06K15/12 , G02F1/29
CPC分类号： G02F1/315 , G06K15/1252
摘要： A technique for reducing interpixel crosstalk in an electrooptic total internal reflection light modulator image bar. A particular electrode length is selected to tailor a portion of the spatial frequency response of the image bar. The pixel size and quality resulting from a voltage difference between electrodes are determined primarily by the overall image bar spatial frequency response, and a set of preferred physical parameters can be determined by selecting parameter values to provide the desired spatial frequency response. It has been found that a desirable frequency response is one that approximates sin(.pi.Pf) for absolute values of f less than about 1/P, where f is the spatial frequency and P is the minimum pixel pitch. Further, it has been found that a particular electrode length provides the desired response for small absolute values of f. The particular electrode length is approximately E.sup.1/2 P/.gamma. where E is the ratio of the normal to tangential dielectric tensor components, P is the minimum pixel pitch, and .gamma. is the grazing angle. The desired cutoff in the frequency response for absolute values of f above about 1/P can be achieved by selecting appropriate values for other physical parameters.
摘要翻译：一种用于减少电光全内反射光调制器图像条中的像素间串扰的技术。选择特定电极长度以定制图像条的空间频率响应的一部分。由电极之间的电压差产生的像素尺寸和质量主要由整个图像条空间频率响应确定，并且可以通过选择参数值来确定一组优选的物理参数以提供期望的空间频率响应。已经发现，期望的频率响应是对于小于约1 / P的f的绝对值近似于sin（pi Pf）的f，其中f是空间频率，P是最小像素间距。此外，已经发现特定的电极长度为小的绝对值f提供期望的响应。特定电极长度近似为E1 / 2P /γ，其中E是法向与切向介电张量分量的比率，P是最小像素间距，γ是掠射角。通过为其他物理参数选择合适的值，可以获得f大于约1 / P的绝对值的频率响应中所需的截止频率。

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