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    SHARED SECRET ARRANGEMENTS AND OPTICAL DATA TRANSFER
    4.
    发明申请
    SHARED SECRET ARRANGEMENTS AND OPTICAL DATA TRANSFER 有权
    共享秘密安排和光学数据传输

    公开(公告)号：US20140057676A1

    公开(公告)日：2014-02-27

    申请号：US13888939

    申请日：2013-05-07

    Applicant: Digimarc Corporation

    Inventor： John D. Lord ,  John Stach

    IPC: H04M1/02

    CPC classification number: H04L63/0428 ,  H04B10/1141 ,  H04B10/116 ,  H04B10/22 ,  H04L63/083 ,  H04L63/18 ,  H04M1/003 ,  H04M1/0264 ,  H04W12/04 ,  H04W12/06 ,  H04W88/06

    Abstract: Digital data is optically broadcast through an environment by controllably switching the brightness or chrominance of LED solid state lamps, or of other illumination sources (e.g., television screens and backlit computer displays). This optical data channel is useful to convey cryptographic key data by which devices within the environment can authenticate themselves to a secure network. In some embodiments, the optical modulation is sensed by the camera of a smartphone. The row data output by the smartphone's camera sensor is processed to extract the modulated data signal. In some monochrome embodiments, data communication speeds far in excess of the camera's frame rate (e.g., 30/second), or even the camera's row rate (e.g., 14,400/second) are achieved. Still greater rates can be achieved by conveying different data in different chrominance channels. A great number of other features and arrangements are also detailed.

    Abstract translation: 通过可控地切换LED固态灯或其他照明源（例如电视屏幕和背光式计算机显示器）的亮度或色度，通过环境光学广播数字数据。 该光学数据信道用于传达加密密钥数据，通过该加密密钥数据，环境中的设备可以将其自身认证到安全网络。 在一些实施例中，光学调制由智能电话的相机感测。 处理由智能电话摄像机传感器输出的行数据以提取调制数据信号。 在一些单色实施例中，实现了远远超过相机的帧速率（例如，30 /秒）甚至相机的行速率（例如，14,400 /秒）的数据通信速度。 通过在不同的色度通道中传送不同的数据可以实现更高的速率。 还详细介绍了许多其他功能和安排。

    ARRANGEMENTS FOR INCREASING DETECTION CONFIDENCE
    6.
    发明申请
    ARRANGEMENTS FOR INCREASING DETECTION CONFIDENCE 审中-公开
    增加检测信心的安排

    公开(公告)号：US20160012563A1

    公开(公告)日：2016-01-14

    申请号：US14681574

    申请日：2015-04-08

    Applicant: Digimarc Corporation

    Inventor： Geoffrey B. Rhoads ,  John Stach

    IPC: G06T1/00 ,  G10L19/018

    CPC classification number: G06T1/0021 ,  G06K9/685 ,  G06K2009/6871 ,  G06T2201/0065 ,  G10L19/018

    Abstract: In one embodiment, a first set of digital data (e.g., an image) is tested for the presence of a certain feature (e.g., a certain face), yielding one of two outcomes (e.g., not-present, or present). If the testing yields the first outcome, no additional testing is performed. If, however, the testing yields the second outcome, further testing is performed to further check this outcome. Such further testing is performed on a second set of digital data that is based on, but different from, the first set of data. Only if the original testing and the further testing both yield the same second outcome is it treated as a valid result. A variety of other features and arrangements are also detailed.

    Abstract translation: 在一个实施例中，测试第一组数字数据（例如，图像）以存在某个特征（例如，某个面部），产生两个结果之一（例如，不存在或存在）。 如果测试产生了第一个结果，则不进行其他测试。 然而，如果测试产生了第二个结果，则进行进一步测试以进一步检查该结果。 对第二组数字数据执行这样的进一步测试，该第二组数字数据基于但不同于第一组数据。 只有当原始测试和进一步测试都产生相同的第二个结果时，才被视为有效的结果。 还详细介绍了各种其他功能和安排。

    SHARED SECRET ARRANGEMENTS AND OPTICAL DATA TRANSFER
    7.
    发明申请
    SHARED SECRET ARRANGEMENTS AND OPTICAL DATA TRANSFER 审中-公开
    共享秘密安排和光学数据传输

    公开(公告)号：US20150215295A1

    公开(公告)日：2015-07-30

    申请号：US14681610

    申请日：2015-04-08

    Applicant: Digimarc Corporation

    Inventor： John D. Lord ,  John Stach

    IPC: H04L29/06 ,  H04M1/00 ,  H04B10/00 ,  H04W12/04

    CPC classification number: H04L63/0428 ,  H04B10/1141 ,  H04B10/116 ,  H04B10/22 ,  H04L63/083 ,  H04L63/18 ,  H04M1/003 ,  H04M1/0264 ,  H04W12/04 ,  H04W12/06 ,  H04W88/06

    Abstract: Digital data is optically broadcast through an environment by controllably switching the brightness or chrominance of LED solid state lamps, or of other illumination sources (e.g., television screens and backlit computer displays). This optical data channel is useful to convey cryptographic key data by which devices within the environment can authenticate themselves to a secure network. In some embodiments, the optical modulation is sensed by the camera of a smartphone. The row data output by the smartphone's camera sensor is processed to extract the modulated data signal. In some monochrome embodiments, data communication speeds far in excess of the camera's frame rate (e.g., 30/second), or even the camera's row rate (e.g., 14,400/second) are achieved. Still greater rates can be achieved by conveying different data in different chrominance channels. A great number of other features and arrangements are also detailed.

    Abstract translation: 通过可控地切换LED固态灯或其他照明源（例如电视屏幕和背光式计算机显示器）的亮度或色度，通过环境光学广播数字数据。 该光学数据信道用于传达加密密钥数据，通过该加密密钥数据，环境中的设备可以将其自身认证到安全网络。 在一些实施例中，光学调制由智能电话的相机感测。 处理由智能电话摄像机传感器输出的行数据以提取调制数据信号。 在一些单色实施例中，实现远超过相机的帧速率（例如，30 /秒）的数据通信速度，甚至相机的行速率（例如，14,400 /秒）。 通过在不同的色度通道中传送不同的数据可以实现更高的速率。 还详细介绍了许多其他功能和安排。

    SKIN IMAGING AND APPLICATIONS
    8.
    发明申请
    SKIN IMAGING AND APPLICATIONS 审中-公开
    皮肤成像和应用

    公开(公告)号：US20140316235A1

    公开(公告)日：2014-10-23

    申请号：US14206109

    申请日：2014-03-12

    Applicant: Digimarc Corporation

    Inventor： Bruce L. Davis ,  Tony F. Rodriguez ,  Alastair M. Reed ,  John Stach ,  Geoffrey B. Rhoads

    IPC: A61B5/00

    CPC classification number: A61B5/7246 ,  A61B5/441 ,  G16H50/20 ,  G16H50/70 ,  Y02A90/26

    Abstract: The availability of high quality imagers on smartphones and other portable devices facilitates creation of a large, crowd-sourced, image reference library that depicts skin rashes and other dermatological conditions. Some of the images are uploaded with, or later annotated with, associated diagnoses or other information (e.g., “this rash went away when I stopped drinking milk”). A user uploads a new image of an unknown skin condition to the library. Image analysis techniques are employed to identify salient similarities between features of the uploaded image, and features of images in this reference library. Given the large dataset, statistically relevant correlations emerge that identify to the user certain diagnoses that may be considered, other diagnoses that may likely be ruled-out, and/or anecdotal information about similar skin conditions from other users. A great variety of other features and arrangements are also detailed.

    Abstract translation: 在智能手机和其他便携式设备上提供高质量的成像器有助于创建一个大型，大量来源的图像参考库，描述皮肤疹和其他皮肤病学条件。 一些图像与相关联的诊断或其他信息（例如，“当我停止喝牛奶时这种皮疹消失”）上传或稍后注释。 用户将未知皮肤状况的新图像上传到库。 图像分析技术用于识别上传图像的特征与本参考库中图像的特征之间的突出相似性。 鉴于大数据集，出现统计学上相关的相关性，以向用户识别可被考虑的某些诊断，可能被排除的其他诊断和/或来自其他用户的类似皮肤状况的轶事信息。 还详细介绍了各种各样的其他功能和安排。

    Differential modulation for robust signaling and synchronization
    9.
    发明授权
    Differential modulation for robust signaling and synchronization 有权

    公开(公告)号：US10181170B2

    公开(公告)日：2019-01-15

    申请号：US15687332

    申请日：2017-08-25

    Applicant: Digimarc Corporation

    Inventor： John Stach ,  Ajith M. Kamath

    IPC: G06K9/00 ,  G06T1/00

    Abstract: Differential modulation schemes encode a data channel within host signal or noisy environment in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. Differential arrangements enable a decoder to suppress host signal or other background signal interference when detecting, synchronizing and extracting an encoded data channel. They also enable the incorporation of implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

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