Bandless halftone design for multiple beam printers employing non-orthogonal halftones
    1.
    发明授权
    Bandless halftone design for multiple beam printers employing non-orthogonal halftones 失效
    使用非正交半色调的多光束打印机的无带半色调设计

    公开(公告)号:US07545537B2

    公开(公告)日:2009-06-09

    申请号:US11193960

    申请日:2005-07-29

    IPC分类号: G06K15/00 H04N1/405

    CPC分类号: H04N1/4055

    摘要: A multiple beam printer system having N laser beams receives print job information from a print host. A rendering application uses a threshold array to generate halftone image data from the print job. The threshold array is defined based on a spot function. The defined screen is non-orthogonal and includes Y pels in a direction that is perpendicular to a scanning direction of the laser beams where Y is an integer multiple of N. A distance between screen dots in pels is preferably equal to an integer multiple of N. The screen dot may be defined by a supercell encompassing two screen dots and having an odd number of pels in a direction that is parallel to the scanning direction. The spot function may include a snap feature that snaps a screen dot to the nearest printer grid pel. The spot function may include scaling to compensate for the distortion of the non-orthogonal screen dot.

    摘要翻译: 具有N个激光束的多光束打印机系统从打印主机接收打印作业信息。 渲染应用程序使用阈值阵列从打印作业生成半色调图像数据。 基于点函数定义阈值数组。 定义的屏幕是非正交的,并且在垂直于激光束的扫描方向的Y方向上包括Y个像素,其中Y是N的整数倍。像素中的屏幕点之间的距离优选等于N的整数倍 屏幕点可以由包含两个屏幕点的超细胞定义,并且在平行于扫描方向的方向上具有奇数个像素。 斑点功能可以包括将屏幕点捕捉到最近的打印机网格像素的快照特征。 点功能可以包括缩放以补偿非正交屏幕点的失真。

    Detecting and compensating for color misregistration produced by a color scanner
    2.
    发明授权
    Detecting and compensating for color misregistration produced by a color scanner 有权
    检测和补偿由彩色扫描仪产生的颜色重合失调

    公开(公告)号:US07400430B2

    公开(公告)日:2008-07-15

    申请号:US10672234

    申请日:2003-09-25

    IPC分类号: H04N1/58 G03F3/08

    CPC分类号: H04N1/58

    摘要: A method, computer program product and system for detecting and compensating for color misregistration. A black/white edge or a solid color edge on a target may be scanned. A black/white edge may refer to a black image, e.g., black text, on a white surrounding background having a rapid spatial transition from black to white. A solid color edge may refer to a solid color image, e.g., solid color text, on a white surrounding background having a rapid spatial transition from color to white. A curve of gray values versus spatial pixel positions for each color channel, e.g., red, green and blue color channels, may be generated. A misregistration error may then be calculated by calculating the offset between the color channel curves. The misregistration error may then be used to calibrate the scanner to compensate for the detected color misregistration.

    摘要翻译: 一种用于检测和补偿颜色错配的方法,计算机程序产品和系统。 可以扫描目标上的黑色/白色边缘或纯色边缘。 黑白边缘可以指白色周围背景上的黑色图像,例如黑色文本,其具有从黑色到白色的快速空间转变。 纯色边缘可以指在白色周围背景上具有从颜色到白色的快速空间转变的纯色图像,例如纯色文本。 可以生成灰度值与每个颜色通道(例如红色,绿色和蓝色通道)的空间像素位置的曲线。 然后可以通过计算颜色通道曲线之间的偏移来计算重合失误。 然后可能会使用重合失误来校准扫描仪以补偿检测到的颜色重合失调。

    Method and system for scaling with dot gain control
    3.
    发明授权
    Method and system for scaling with dot gain control 有权
    使用点增益控制进行缩放的方法和系统

    公开(公告)号:US08520253B2

    公开(公告)日:2013-08-27

    申请号:US11085161

    申请日:2005-03-22

    IPC分类号: H04N1/60

    CPC分类号: G06K15/02

    摘要: A method (and system) for changing spatial resolution of an image includes systematically creating an image scaling look-up table including at least one pixel replacement pattern and applying a scaling algorithm to modify the image using the image scaling look-up table, thereby allowing a user to scale binary images with easy control of dot gain, output bit depth and other printer parameters.

    摘要翻译: 用于改变图像的空间分辨率的方法(和系统)包括系统地创建包括至少一个像素替换图案的图像缩放查找表,并且使用缩放算法来使用图像缩放查找表修改图像,从而允许 用户可以轻松控制点增益,输出位深度和其他打印机参数来缩放二进制图像。

    Method and system for designing multilevel halftone screens using spot functions
    5.
    发明授权
    Method and system for designing multilevel halftone screens using spot functions 有权
    使用现场功能设计多层半色调网版的方法和系统

    公开(公告)号:US07599097B2

    公开(公告)日:2009-10-06

    申请号:US11149235

    申请日:2005-06-10

    IPC分类号: G06K15/00

    CPC分类号: H04N1/4055 H04N1/40087

    摘要: A method and system for generating halftone tables, using a spot function, subdivides the pixels within the halftone cell of a halftone matrix into a plurality of sub-pixels, determines the value of the spot function corresponding to the position of each of the sub-pixels within the halftone matrix, repeats the subdividing and determining for all of the sub-pixels in the halftone matrix, ranks the values for the entire halftone matrix, normalizes the ranked values, generates a cumulative histogram based upon the normalized values, and stores the cumulative histogram as a halftone table.

    摘要翻译: 使用点功能产生半色调表的方法和系统将半色调矩阵的半色调单元内的像素细分成多个子像素,确定与每个子像素的位置相对应的光点函数的值, 半色调矩阵内的像素重复细分和确定半色调矩阵中的所有子像素,对整个半色调矩阵的值进行排序,对排序的值进行归一化,基于归一化值生成累积直方图,并存储 累积直方图作为半色调表。

    TECHNOLOGIES FOR AUTHENTICATION AND SINGLE-SIGN-ON USING DEVICE SECURITY ASSERTIONS
    8.
    发明申请
    TECHNOLOGIES FOR AUTHENTICATION AND SINGLE-SIGN-ON USING DEVICE SECURITY ASSERTIONS 有权
    使用设备安全性认证的认证和单一标识技术

    公开(公告)号:US20160285858A1

    公开(公告)日:2016-09-29

    申请号:US14670955

    申请日:2015-03-27

    摘要: Technologies for remote device authentication include a client computing device, an identity provider, and an application server in communication over a network. The identity provider sends an authentication challenge to the client. A capability proxy of the client intercepts an authentication challenge response and retrieves one or more security assertions from a secure environment of the client computing device. The capability proxy may be an embedded web server providing an HTTP interface to platform features of the client. The client sends a resource access token based on the security assertions to the identity provider. The identity provider verifies the resource access token and authenticates the client computing device based on the resource access token in addition to user authentication factors such as username and password. The identity provider sends an authentication response to the client, which forwards the authentication response to the application server. Other embodiments are described and claimed.

    摘要翻译: 用于远程设备认证的技术包括客户端计算设备,身份提供商和通过网络进行通信的应用服务器。 身份提供者向客户端发送认证挑战。 客户端的能力代理拦截认证挑战响应,并从客户端计算设备的安全环境检索一个或多个安全断言。 能力代理可以是向客户端的平台特征提供HTTP接口的嵌入式web服务器。 客户端将基于安全性断言的资源访问令牌发送给身份提供者。 身份提供者验证资源访问令牌,并根据用户认证因素(如用户名和密码),基于资源访问令牌对客户端计算设备进行身份验证。 身份提供者向客户端发送认证响应,该响应将认证响应转发给应用服务器。 描述和要求保护其他实施例。

    Monochrome Profile Generation Mechanism
    9.
    发明申请
    Monochrome Profile Generation Mechanism 审中-公开
    单色轮廓生成机制

    公开(公告)号:US20160247049A1

    公开(公告)日:2016-08-25

    申请号:US14628787

    申请日:2015-02-23

    IPC分类号: G06K15/02

    摘要: A method disclosed. The method includes receiving color data, converting the color data to grayscale data by analyzing color gamut and perceptual color differences in the color data and generating a profile based on the conversion.

    摘要翻译: 公开的方法。 该方法包括接收彩色数据,通过分析色彩数据中的色域和感知色差将颜色数据转换成灰度数据,并基于转换生成轮廓。