中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

107 records (took 0.018 seconds)

    Dark to light watermark without special materials
    41.
    发明授权
    Dark to light watermark without special materials 有权
    黑暗到无光泽水印无特殊材料

    公开(公告)号：US09275428B2

    公开(公告)日：2016-03-01

    申请号：US14220866

    申请日：2014-03-20

    Applicant: XEROX CORPORATION

    Inventor： Edward N. Chapman

    IPC: G06T1/00 ,  H04N1/32

    CPC classification number: G06T1/0021 ,  B41M3/008 ,  B41M3/10 ,  B41M3/14 ,  B42D25/333 ,  G06T2201/0051 ,  G06T2201/0062 ,  H04N1/32144 ,  H04N1/32208 ,  H04N1/32251 ,  H04N1/32561 ,  H04N2201/3239 ,  H04N2201/3243

    Abstract: Methods and systems rasterize a document to produce a bitmap having first pixels of a first color as background uniformly located across a watermark region and second pixels of a second color located in a pattern forming foreground items within the watermark region. The rasterization causes the first pixels to deposit a first marking material (forming the first color) to a first height on the print media, and the rasterization causes the second pixels to deposit a second marking material (forming the second color) to a second height (different from the first height) on the print media. In the printed document, by having the first color be different from the second color and the second height be different from the first height, this causes the relative darkness between the background and the foreground items to reverse when the printed document is viewed from different angles (relative to a light source).

    Abstract translation: 方法和系统光栅化文档以产生具有第一颜色的第一像素的位图，作为横跨水印区域均匀定位的背景，以及位于形成水印区域内的前景项目的图案中的第二颜色的第二像素。 光栅化使得第一像素将第一标记材料（形成第一颜色）沉积到打印介质上的第一高度，并且光栅化使得第二像素将第二标记材料（形成第二颜色）沉积到第二高度 （与第一个高度不同）在打印介质上。 在打印文档中，通过使第一颜色与第二颜色不同，第二高度与第一高度不同，这导致当从不同角度观看打印文档时背景和前景项之间的相对暗度反转 （相对于光源）。

    METHOD FOR WATER-MARKING DIGITAL BOOKS
    43.
    发明申请
    METHOD FOR WATER-MARKING DIGITAL BOOKS 有权
    水印数字书籍的方法

    公开(公告)号：US20150195421A1

    公开(公告)日：2015-07-09

    申请号：US14412853

    申请日：2013-07-01

    Applicant: Viaccess

    Inventor： Laurent Clisson

    IPC: H04N1/32 ,  G06T11/60 ,  G06T1/00 ,  G06F21/10

    CPC classification number: H04N1/32144 ,  G06F17/2217 ,  G06F21/10 ,  G06F2221/0737 ,  G06F2221/074 ,  G06F2221/0746 ,  G06F2221/0748 ,  G06T1/0071 ,  G06T11/60 ,  G06T2201/0062 ,  G06T2201/0063 ,  G06T2201/0064 ,  H04N1/32272 ,  H04N1/32304 ,  H04N2201/3239 ,  H04N2201/327

    Abstract: A method for water-marking digital books with parameters involves developing, for each parameter, a new typeface on the basis of a pre-existing typeface, by creating at least one new code/glyph pair. The method also includes developing a new coded text on the basis of the pre-existing coded text by replacing, in the pre-existing coded text, at least one code or group of codes from the pre-existing typeface. The method further includes allowing display of a character or a combination of characters from the digital book by the code or the group of codes from the new typeface allowing display of the graphically identical character or combination of characters on any screen. The code or this group of codes from the new typeface having at least the code from the new code/glyph pair, providing the new coded text and the new typeface as a water-marked digital book.

    Abstract translation: 水印数字书籍的方法涉及到通过创建至少一个新的代码/字形对，为每个参数开发基于预先存在的字体的新字体。 该方法还包括在预先存在的编码文本的基础上开发新的编码文本，通过在预先存在的编码文本中替换来自预先存在的字体的至少一个代码或代码组。 该方法还包括允许通过来自新字体的代码或代码组从数字书籍显示字符或字符组合，允许在任何屏幕上显示图形相同的字符或字符组合。 来自新字体的代码或这组代码至少具有来自新代码/字形对的代码，提供新的编码文本和新的字体作为水印数字书。

    Security Element and Method to Inspect Authenticity of a Print
    44.
    发明申请
    Security Element and Method to Inspect Authenticity of a Print 有权
    检查打印真实性的安全元​​素和方法

    公开(公告)号：US20150036890A1

    公开(公告)日：2015-02-05

    申请号：US14378901

    申请日：2013-02-15

    Applicant: Attila Biró ,  Gábor Kristó ,  Piroska Reményi

    Inventor： Attila Biró ,  Gábor Kristó ,  Piroska Reményi

    IPC: G06K19/06 ,  H04N1/32 ,  G06K9/34 ,  G06T1/00 ,  G06K9/00 ,  G06K9/18

    CPC classification number: G06K19/06056 ,  G06K9/00456 ,  G06K9/00577 ,  G06K9/18 ,  G06K9/34 ,  G06K19/06028 ,  G06K19/06037 ,  G06K2009/0059 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0062 ,  G06T2201/0065 ,  G07D7/0056 ,  G07D7/2041 ,  H04N1/32251 ,  H04N1/32325 ,  H04N1/32352

    Abstract: The invention relates to a security element applied onto printing substrates (bank-notes, securities, product packagings, identity cards/labels or other similar documents) by printing, comprising a unique identifier as primary information visible to the naked eye and secondary information protecting against copying non-visible to the naked eye. The unique identifier is typically a point code. Said secondary information is represented by a structure with the largest dimension of 2 to 40 microns, and due to printing distortions arising when the security element is applied onto a printing substrate, said secondary information is non-reconstructable from the print of the security element and a statistically analyzable inherent feature is associated to it. The invention also relates to a printed matter with such an inventive security element and to a method to check authenticity of a printed matter with the inventive security element in visible light (380-750 nm).

    Abstract translation: 本发明涉及通过印刷应用于印刷基板（纸币，证券，产品包装，身份证/标签或其他类似文件）的安全元件，其包括唯一标识符作为肉眼可见的主要信息，并且防止二次信息 复制不可见肉眼。 唯一标识符通常是点代码。 所述次要信息由最大尺寸为2至40微米的结构表示，并且由于当将安全元件施加到印刷基板上时产生的印刷失真，所述次要信息不可从安全元件的印刷中重建， 统计分析的固有特征与之相关联。 本发明还涉及具有这种本发明的安全元件的印刷品以及用可见光（380-750nm）检测具有本发明的安全元件的印刷品的真实性的方法。

    Unauthorized text alteration prevention with contour following background patterns
    45.
    发明授权
    Unauthorized text alteration prevention with contour following background patterns 有权
    未经授权的文字改变预防与轮廓跟随背景图案

    公开(公告)号：US08774450B2

    公开(公告)日：2014-07-08

    申请号：US13093130

    申请日：2011-04-25

    Applicant: Zhigang Fan ,  Shen-Ge Wang

    Inventor： Zhigang Fan ,  Shen-Ge Wang

    IPC: G06K9/48

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0062

    Abstract: Described herein is a level I (overt) feature for security printing intended to deter unauthorized modification of text documents. The exemplary method includes generating a textured background that follows the contour of the text it surrounds and is difficult to modify. The background patterns may be generated with a two-step procedure that first creates a smooth function and then modulates it to produce patterns with sharp contrast. Tampering will be deterred as visible artifacts will be created when text is altered. Compared to the levels II and III features, the exemplary method relies on human vision for detection and does not require any special tools and instruments. It can be used in applications where fast, simple and inexpensive inspection is essential, or combined with other technologies for enhancing overall effectiveness.

    Abstract translation: 这里描述的是用于防止非法修改文本文档的安全打印的I级（公开）特征。 示例性方法包括生成跟随其围绕的文本轮廓的纹理背景，并且难以修改。 背景图案可以通过两步过程产生，其首先创建平滑功能，然后调制它以产生具有鲜明对比度的图案。 篡改将被阻止，因为当文字被改变时会产生可见的文物。 与II和III级特征相比，该示例性方法依赖于人类视觉进行检测，并且不需要任何特殊的工具和仪器。 它可用于快速，简单和廉价检查至关重要的应用，或与其他技术相结合，以提高整体效能。

    Watermarking electronic text documents
    47.
    发明授权
    Watermarking electronic text documents 有权
    水印电子文本文件

    公开(公告)号：US08320611B2

    公开(公告)日：2012-11-27

    申请号：US13181072

    申请日：2011-07-12

    Applicant: Adnan M. Alattar ,  Osama M. Alattar

    Inventor： Adnan M. Alattar ,  Osama M. Alattar

    IPC: G06K9/00

    CPC classification number: G06F17/2294 ,  G06F17/241 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0062 ,  G06T2201/0065 ,  H04N1/32203 ,  H04N1/32219 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/328 ,  H04N2201/3284

    Abstract: A text watermarking method embeds an auxiliary message in an original electronic text document to form a watermarked text document. The method applies a spreading function to message symbols to spread the symbols over a carrier, which forms a modulated carrier. It maps elements of the modulated carrier to corresponding inter-word spaces in the electronic text document, and applies an embedding function to modify the corresponding inter-word spaces according to elements of the modulated carrier signal such that the modified inter-word spaces hide the modulated carrier signal in the watermarked text document. The message symbols are automatically decodable from the watermarked document without the original electronic text document. A compatible decoder extracts the auxiliary message from a printed or electronic watermarked text document. The decoder automatically measures inter-word spaces in the watermarked text document. It estimates elements of a modulated carrier signal embedded in the inter-word spaces to form an estimated modulated carrier signal, and applies a de-spreading function to the estimated modulated carrier signal to extract message symbols.

    Abstract translation: 文本水印方法在原始电子文本文档中嵌入辅助消息以形成水印文本文档。 该方法将扩展函数应用于消息符号，以便在形成调制载波的载波上扩展符号。 它将调制载波的元素映射到电子文本文档中的对应的字间空间，并且根据调制的载波信号的元素应用嵌入功能来修改对应的字间空间，使得修改的字间空间隐藏 在水印文本文档中调制载波信号。 消息符号可以从没有原始电子文本文档的水印文档中自动解码。 兼容解码器从打印或电子水印的文本文档中提取辅助消息。 解码器自动测量水印文本文档中的字间空格。 它估计嵌入在字间空间中的调制载波信号的元素以形成估计的调制载波信号，并且对估计的调制载波信号应用去扩展功能以提取消息符号。

    UNAUTHORIZED TEXT ALTERATION PREVENTION WITH CONTOUR FOLLOWING BACKGROUND PATTERNS
    49.
    发明申请
    UNAUTHORIZED TEXT ALTERATION PREVENTION WITH CONTOUR FOLLOWING BACKGROUND PATTERNS 有权
    未知的文本修改预防与后面的背景模式的轮廓

    公开(公告)号：US20120269433A1

    公开(公告)日：2012-10-25

    申请号：US13093130

    申请日：2011-04-25

    Applicant: Zhigang Fan ,  Shen-Ge Wang

    Inventor： Zhigang Fan ,  Shen-Ge Wang

    IPC: G06K9/34

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0062

    Abstract: Described herein is a level I (overt) feature for security printing intended to deter unauthorized modification of text documents. The exemplary method includes generating a textured background that follows the contour of the text it surrounds and is difficult to modify. The background patterns may be generated with a two-step procedure that first creates a smooth function and then modulates it to produce patterns with sharp contrast. Tampering will be deterred as visible artifacts will be created when text is altered. Compared to the levels II and III features, the exemplary method relies on human vision for detection and does not require any special tools and instruments. It can be used in applications where fast, simple and inexpensive inspection is essential, or combined with other technologies for enhancing overall effectiveness.

    Abstract translation: 这里描述的是用于防止非法修改文本文档的安全打印的I级（公开）特征。 示例性方法包括生成跟随其围绕的文本轮廓的纹理背景，并且难以修改。 背景图案可以通过两步过程产生，其首先创建平滑功能，然后调制它以产生具有鲜明对比度的图案。 篡改将被阻止，因为当文字被改变时会产生可见的文物。 与II和III级特征相比，该示例性方法依赖于人类视觉进行检测，并且不需要任何特殊的工具和仪器。 它可用于快速，简单和廉价检查至关重要的应用，或与其他技术相结合，以提高整体效能。

Patent Agency Ranking