利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

119 条记录 (耗时 0.038 秒)

    Fragile and emerging digital watermarks
    1.
    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

    申请人： Alastair Reed ,  Tony Rodriguez ,  Ravi Sharma

    发明人： Alastair Reed ,  Tony Rodriguez ,  Ravi Sharma

    IPC分类号： G06T1/00 ,  H04N1/00 ,  H04N1/32 ,  G06K9/00

    CPC分类号： G06T1/0042 ,  H04N1/00002 ,  H04N1/00005 ,  H04N1/00037

    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
    3.
    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

    申请人： Tony Rodriguez ,  Geoffrey Rhoads ,  Ravi Sharma

    发明人： Tony Rodriguez ,  Geoffrey Rhoads ,  Ravi Sharma

    IPC分类号： G06K9/00

    CPC分类号： B42D25/333 ,  B41M3/10 ,  B42D25/00 ,  B42D25/23 ,  B42D25/328 ,  B42D2033/20 ,  B42D2035/24 ,  G06K9/22 ,  G06K9/46 ,  G06T1/0021 ,  G06T1/0028 ,  G06T2201/0051 ,  G07D7/0051 ,  G07D7/0053 ,  G07D7/0055 ,  G07D7/0057 ,  G07D7/12 ,  G07D7/20

    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
    4.
    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

    申请人： Ravi Sharma ,  Tony Rodriguez

    发明人： Ravi Sharma ,  Tony Rodriguez

    IPC分类号： G05B19/00

    CPC分类号： G06F17/30743 ,  G05B2219/24162 ,  G06K9/00503 ,  G06K9/0053 ,  G06T1/0064 ,  G06T2201/0052 ,  G10L25/18 ,  G10L25/21 ,  H04M1/0264 ,  H04N1/00204 ,  H04N1/00244 ,  H04N1/00307 ,  H04N1/00358 ,  H04N1/00363 ,  H04N1/00973 ,  H04N1/32117 ,  H04N1/32144 ,  H04N1/3216 ,  H04N2201/0096 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/3278 ,  H04W88/02

    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。

    Watermark payload encryption methods and systems
    5.
    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

    申请人： Ravi Sharma ,  Daniel Ramos ,  Tony Rodriguez ,  Kenneth Levy

    发明人： Ravi Sharma ,  Daniel Ramos ,  Tony Rodriguez ,  Kenneth Levy

    IPC分类号： G06K9/00 ,  G06T1/00 ,  H04L9/00 ,  H04L9/32 ,  H04N1/32

    CPC分类号： G06T1/0071 ,  G06Q20/3823 ,  H04L9/3236 ,  H04L9/3247 ,  H04L2209/34 ,  H04L2209/608 ,  H04N1/32144 ,  H04N2201/3205 ,  H04N2201/3236 ,  H04N2201/327 ,  H04N2201/3281 ,  H04N2201/3284

    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。

    Inverted keyboard instrument and method of playing the same
    6.
    发明授权
    Inverted keyboard instrument and method of playing the same 有权

    公开(公告)号：US09024165B2

    公开(公告)日：2015-05-05

    申请号：US13066588

    申请日：2011-04-18

    申请人： Ravi Sharma

    发明人： Ravi Sharma

    IPC分类号： G10C3/12 ,  G10H1/34

    CPC分类号： G10H1/34 ,  G10H2220/221

    摘要： An electronic keyboard instrument is provided and methods of playing and assembling the same. The instrument comprises a controller for enabling activation of electronic signals having audible, visible, amplifiable, recordable and/or like characteristics, and a power source for operating the controller. A first keyboard is provided having a first selected length and being oriented in a first direction such that (i) audible notes of music from at least one internal sound module and/or at least one external sound module, (ii) recordable data to be enhanced or modified by an external sequencer or program controlled apparatus, (iii) photoelectric signals, and (iv) processes or mechanisms, triggered or controlled by external signals or data, for controlling machines, video playback or lighting, and/or the like may be generated and/or activated using a first hand of one or more users. A second keyboard with a second selected length is generally coextensive with and oriented generally opposite to the first such that (i) audible notes of music from at least one internal sound module and/or at least one external sound module, (ii) recordable data to be enhanced or modified by an external sequencer or program controlled apparatus, (iii) photoelectric signals, and (iv) processes or mechanisms, triggered or controlled by external signals or data, for controlling machines, video playback or lighting, and/or the like may be generated and/or activated using a second hand of the one or more users. In addition, an interface connects the controller to at least one external device having sound module, and/or sequencing and signal enhancement functions. A plurality of peripheral devices operatively connected thereto permit interactive control and manipulation of the signals. Finally, a wearable support is mounted to the instrument for suspending the first and second keyboards from the user's body during instrument operation. Alternatively, the instrument is suspended by a support structure in a generally horizontal fashion for simultaneous operation by multiple users.