Watermark payload encryption methods and systems
    1.
    发明申请
    Watermark payload encryption methods and systems 审中-公开
    水印有效载荷加密方法和系统

    公开(公告)号:US20050271246A1

    公开(公告)日:2005-12-08

    申请号:US11082179

    申请日:2005-03-15

    摘要: The present invention provides a method of securing messages steganographically embedded in media (e.g., printed or electronic objects, audio and video). In one implementation, a message includes a first portion and a second portion. The first portion includes a first message and a first checksum, which are encrypted with a private key. The encrypted first portion is combined with the second portion. The second portion includes a second message and as second checksum. The combined encrypted first portion and the second portion form a signature. The signature is encrypted with a common or universal key, perhaps after error correction coding. The private key is uniquely associated with an entity such as a document issuing jurisdiction. In another implementation, a method appends information to a watermark message received from a remote device. The information preferably corresponds to the remote device or to a user of the remote device. In yet another implementation, a method provides standardized watermark payloads from various input data, regardless of the size of the input data.

    摘要翻译: 本发明提供了一种确保隐藏在媒体(例如,印刷或电子对象,音频和视频)中的消息的方法。 在一个实现中,消息包括第一部分和第二部分。 第一部分包括用私钥加密的第一消息和第一校验和。 加密的第一部分与第二部分组合。 第二部分包括第二消息和第二校验和。 组合加密的第一部分和第二部分形成签名。 签名使用公共密钥或通用密钥进行加密,也许在纠错编码之后。 私钥与诸如发布管辖区的文档等实体唯一相关联。 在另一实现中,一种方法将信息附加到从远程设备接收的水印消息。 信息优选地对应于远程设备或远程设备的用户。 在又一实现中,一种方法提供来自各种输入数据的标准化水印有效载荷,而与输入数据的大小无关。

    Fragile and emerging digital watermarks
    3.
    发明申请
    Fragile and emerging digital watermarks 有权
    脆弱和新兴的数字水印

    公开(公告)号:US20050041835A1

    公开(公告)日:2005-02-24

    申请号:US10836094

    申请日:2004-04-29

    摘要: This disclosure describes methods for using embedded auxiliary signals in documents for copy detection. In one implementation we embed an auxiliary signal with a first color that is out of gamut with process color inks or with a particular range of printers. A process color approximation of the first color yields a relatively different contrast when, e.g., viewed with an interference filter. A copy is determined based on the relative presence or absence of the auxiliary signal. In another implementation, we provide a first auxiliary signal with a first color and a second auxiliary signal with a second color. A filter is matched according to the spectral response of the first color. The second color preferably includes a spectral response that is inversely related to the matched filter. The first signal is then detectable in a process color copy, but less so in the original. However, the second signal is detectable in the original, but less so in the copy. In still other implementations we compare relative contrast of a signal to determine an original from a copy.

    摘要翻译: 本公开描述了在用于复制检测的文档中使用嵌入式辅助信号的方法。 在一个实现中,我们使用具有处理颜色墨水或特定范围的打印机的第一种颜色嵌入不同色域的辅助信号。 当例如用干涉滤光片观察时,第一种颜色的处理颜色近似产生相对不同的对比度。 基于辅助信号的相对存在或不存在来确定副本。 在另一实现中,我们提供具有第一颜色的第一辅助信号和具有第二颜色的第二辅助信号。 滤光片根据第一种颜色的光谱响应进行匹配。 第二种颜色优选地包括与匹配滤波器相反的光谱响应。 然后第一个信号可以在过程颜色拷贝中检测到,但在原始信号中不太可能。 然而,第二个信号在原件中是可检测的,但在副本中较少。 在其他实施方式中,我们比较信号的相对对比度以从副本确定原件。

    Authenticating identification and security documents
    4.
    发明申请
    Authenticating identification and security documents 有权
    验证身份证件和安全文件

    公开(公告)号:US20060115110A1

    公开(公告)日:2006-06-01

    申请号:US11270802

    申请日:2005-11-08

    IPC分类号: G06K9/00

    摘要: The application discloses identification and security documents and methods and systems for authenticating such identification and security documents. In one implementation, a document includes a first surface; and a second surface. The first surface comprises a first set of print structures and a second set of print structures. The first set of print structures and the second set of print structures cooperate to obscure the location on the first surface of the second set of print structures. The second set of print structures is arranged on the first surface so as to provide a reflection pattern. In one example, the reflection pattern includes a diffraction grating. The second set of print structures is preferably provided on the first surface with metallic ink. In other implementations a financial instrument or identification document is provided with an organic light emitting diode (OLED) array. The OLED array displays information thereon. The information is preferably correlated to the information on or in the financial instrument or identification document.

    摘要翻译: 该申请公开了用于认证这种识别和安全文件的识别和安全文件和方法和系统。 在一个实现中,文档包括第一表面; 和第二表面。 第一表面包括第一组打印结构和第二组打印结构。 第一组打印结构和第二组打印结构相配合以掩盖第二组打印结构的第一表面上的位置。 第二组打印结构布置在第一表面上以提供反射图案。 在一个示例中,反射图案包括衍射光栅。 第二组打印结构优选地在金属墨水的第一表面上设置。 在其他实施方式中,金融工具或识别文件被提供有有机发光二极管(OLED)阵列。 OLED阵列在其上显示信息。 该信息优选地与金融工具或身份证件上的信息相关联。

    Fast signal detection and distributed computing in portable computing devices
    5.
    发明申请
    Fast signal detection and distributed computing in portable computing devices 有权
    便携式计算设备中的快速信号检测和分布式计算

    公开(公告)号:US20060031684A1

    公开(公告)日:2006-02-09

    申请号:US11198004

    申请日:2005-08-05

    IPC分类号: G05B19/00

    摘要: This disclosure describes a distributed reader architecture for a mobile computing device such as cellular telephone handset. This architecture includes a reader library that reads device capabilities and business model parameters in the device, and in response, for selects an appropriate configuration of reader modules for identifying a content item. The reader modules each perform a function used in identifying a content item. The modules are selected so that the resources available on the device and in remote devices are used optimally, depending on available computing resources on the device and network bandwidth. One example of a reader module is a fast watermark detection module that quickly detects the presence of a watermark, enabling resources to be focused on portions of content that are most likely going to lead to successful content identification. A watermark signal structure for fast watermark detection is comprised of a dense array of impulse functions in a form of a circle in a Fourier magnitude domain, and the impulse functions having pseudorandom phase. Alternative structures are possible.

    摘要翻译: 本公开描述了用于诸如蜂窝电话手机的移动计算设备的分布式读取器架构。 该架构包括阅读器库,其读取设备中的设备能力和业务模型参数,并且作为响应,用于选择用于识别内容项目的读取器模块的适当配置。 读取器模块各自执行用于识别内容项目的功能。 选择这些模块,以便根据设备上可用的计算资源和网络带宽,最佳地使用设备和远程设备上可用的资源。 读取器模块的一个示例是快速检测水印的存在的快速水印检测模块,使资源能够集中在最有可能导致成功的内容识别的内容的部分上。 用于快速水印检测的水印信号结构由傅里叶级数域中的圆形脉冲函数的密集阵列组成,脉冲函数具有伪随机相位。 替代结构是可能的。

    Rules Driven Pan ID Metadata Routing System and Network

    公开(公告)号:US20070208711A1

    公开(公告)日:2007-09-06

    申请号:US11614947

    申请日:2006-12-21

    IPC分类号: G06F17/30

    摘要: A method of associating a content object with metadata uses a combination of a content identifier and a bounding identifier to enable handling of disparate sets of content identifiers for content objects with potentially conflicting content identifiers. The method receives a content identifier for a content object from among a set of content identifiers. It provides a unique bounding identifier for the set of content identifiers. This unique bounding identifier is used in combination with the content identifier to form a globally unique identifier for the content object. This globally unique identifier is associated with a metadata source, which enables routing of a user to the metadata source. Another novel method addresses content objects with two or more content identifiers, potentially referencing different metadata sources. This method registers different globally unique identifiers for a content object. These globally unique identifiers each comprise a content identifier provided with the content object and a bounding identifier identifying a set of content identifiers of which the content identifier is a member. For each of the globally unique identifiers, information is maintained about a metadata source. The method receives a first content identifier for the content object, and uses a bounding identifier associated with the set of the first content identifier to determine the globally unique identifier for the first content identifier. The user is routed to the metadata source associated with globally unique identifier. This document describes a novel system that enables multiple identity providers (ID Providers) to register and use the system. The ID Provider registers with a metadata directory system, receives a unique bounding identifier, and uses this bounding ID (e.g., an ID provider ID) with subsequent interactions with the metadata directory system. Separately, metadata source providers register metadata sources with the metadata directory system. This enables many different participants to associate content objects with metadata sources using one or more identify providers. Examples of metadata source providers include content providers, like content owners or retailers that have the flexibility of working with different ID providers to associate content objects with metadata. Both content providers and ID providers can register and use the system. The metadata source is the system or device that provides the metadata, like a web site. The directory system uses an identifier for the metadata source, which enables it to maintain an association between a content object and its corresponding metadata source. For example, in some embodiments, a URL serves to identify the location of the source. The Content Metadata Directory Services (CMDS) is a global trusted directory service that connects consumers of identified content to content-provider authorized and managed metadata databases and other digital resources. It includes mostly links to metadata, forms globally unique IDs based upon overlapping content identifiers and unique bounding identifiers, enables multiple content identifiers within a content object, and enables multiple content identity technology providers, even when they are using different technology.

    Systems and methods for document verification
    7.
    发明申请
    Systems and methods for document verification 审中-公开
    用于文件验证的系统和方法

    公开(公告)号:US20060157559A1

    公开(公告)日:2006-07-20

    申请号:US11177252

    申请日:2005-07-07

    IPC分类号: G06K5/00

    摘要: A method for issuing a credential includes scanning in documents (e.g., breeder or ID documents) used to verify the applicant of the credential and creating data records including the image of the documents. As a means to reduce fraud, these data records are linked to the credential and to the issuer location, operator and time and place of issuance. If the document includes machine readable information, the method automatically reads the machine readable information from the document and uses at least part of the machine readable information from the document to pre-populate a form used to create a credential, such as an identification document. The method includes applying a transformation to the image of the document that enables protection against fraudulent use. The transformation secures the image of the document from tampering and/or enables tracking of the use of the document image to deter fraud. A method of verifying a credential comprises reading a physical security feature attribute on the credential, reading a logical attribute on the credential, and comparing information from the physical security feature with the logical storage element on the credential to verify the credential.

    摘要翻译: 用于签发凭证的方法包括扫描用于验证凭证的申请者的文档(例如,育种者或身份证件),并创建包括文档图像的数据记录。 作为减少欺诈的一种手段,这些数据记录与证书和颁发者的位置,运营商以及发放时间和地点相关联。 如果文档包括机器可读信息,则该方法自动从文档读取机器可读信息,并且使用来自该文档的至少一部分机器可读信息来预先填充用于创建证书(诸如识别文档)的形式。 该方法包括将变换应用于文档的图像,其能够防止欺诈性使用。 转换保护文档的图像免受篡改和/或使得跟踪文档图像的使用以阻止欺诈。 验证证书的方法包括读取证书上的物理安全特征属性,读取证书上的逻辑属性,以及将来自物理安全特征的信息与证书上的逻辑存储元件进行比较以验证证书。

    Watermark Systems and Methods
    9.
    发明申请
    Watermark Systems and Methods 有权
    水印系统与方法

    公开(公告)号:US20070183623A1

    公开(公告)日:2007-08-09

    申请号:US11548167

    申请日:2006-10-10

    IPC分类号: G06K9/00

    摘要: A number of novel watermarking applications, and improvements to watermarking methods, are disclosed. Included are techniques for encoding printed circuit boards and street signs with watermarks, deterring credit card fraud and controlling software licensing using watermarks, registering collectibles via watermarks, encoding the margins of printed pages with watermarks, and using watermarks to convey extra information in video by which fidelity of the rendered video may be improved. One particular arrangement is a method in which a PDA, wristwatch, or other portable device with a display screen presents a pattern that includes a machine-readable identifier. This image is sensed by a separate device, such as a webcam or a camera-equipped cell phone. The sensing device can then take an action based on the identifier. In some arrangements, the action is personalized to the user.

    摘要翻译: 公开了一些新颖的水印应用以及对水印方法的改进。 包括用于编码印刷电路板和具有水印的街道标志的技术,阻止信用卡欺诈和使用水印控制软件许可,通过水印注册收藏品,用水印对打印页面的边缘进行编码,以及使用水印来传达视频中的额外信息, 可以提高渲染视频的保真度。 一种特定的布置是其中具有显示屏的PDA,手表或其他便携式设备呈现包括机器可读标识符的图案的方法。 该图像由单独的设备感测到,例如网络摄像机或配备有相机的手机。 然后,感测装置可以基于标识符采取动作。 在一些安排中,该操作被个性化给用户。