Non-Linear-Error Correction in Fractional-N Digital PLL Frequency Synthesizer
    41.
    发明申请
    Non-Linear-Error Correction in Fractional-N Digital PLL Frequency Synthesizer 有权
    分数N数字PLL频率合成器中的非线性误差校正

    公开(公告)号:US20140097875A1

    公开(公告)日:2014-04-10

    申请号:US13645760

    申请日:2012-10-05

    IPC分类号: H03B21/00

    CPC分类号: H03L7/1976 H03L7/085

    摘要: The present disclosure relates to a frequency synthesizer. The frequency synthesizer includes a phase comparator having first and second input nodes. The first input node receives a reference signal having a reference frequency. A channel control block has an input that receives a channel word and an output coupled to the second input node of the phase comparator. A local oscillator (LO) output node provides an LO signal having an LO frequency based on the reference frequency and the channel word. A feedback back couples the LO output node to the second input node of the phase comparator through the channel control block. A non-linear error correction element is operably coupled on a coupling path extending between the phase comparator and the DCO.

    摘要翻译: 本公开涉及频率合成器。 频率合成器包括具有第一和第二输入节点的相位比较器。 第一输入节点接收具有参考频率的参考信号。 信道控制块具有接收信道字的输入和耦合到相位比较器的第二输入节点的输出。 本地振荡器(LO)输出节点基于参考频率和通道字提供具有LO频率的LO信号。 反馈反馈通过信道控制块将LO输出节点耦合到相位比较器的第二输入节点。 非线性误差校正元件可操作地耦合在相位比较器和DCO之间延伸的耦合路径上。

    Circuit and Method
    42.
    发明申请
    Circuit and Method 有权
    电路和方法

    公开(公告)号:US20140002287A1

    公开(公告)日:2014-01-02

    申请号:US13976649

    申请日:2012-12-20

    IPC分类号: H03M1/74

    摘要: Embodiments of the present invention create a circuit having a digital-to-time converter with a high-frequency input for receiving a high-frequency signal, a digital input for receiving a first digital signal, and a high-frequency output for the provision of a chronologically delayed version of the HF signal. In addition, the circuit has an oscillator arrangement for the provision of the high-frequency signal, having a phase-locked loop for adjusting a frequency of the high-frequency signal. The digital-to-time converter is designed to chronologically delay the received high-frequency signal based on the first digital signal received at its digital input.

    摘要翻译: 本发明的实施例产生具有数字 - 时间转换器的电路,其具有用于接收高频信号的高频输入端,用于接收第一数字信号的数字输入端和用于提供高频信号的高频输出端 时间延迟版本的HF信号。 此外,电路具有用于提供高频信号的振荡器装置,具有用于调节高频信号的频率的锁相环。 数字 - 时间转换器被设计为基于在其数字输入处接收的第一数字信号按时间顺序延迟所接收的高频信号。

    DIGITAL WIDEBAND CLOSED LOOP PHASE MODULATOR WITH MODULATION GAIN CALIBRATION
    44.
    发明申请
    DIGITAL WIDEBAND CLOSED LOOP PHASE MODULATOR WITH MODULATION GAIN CALIBRATION 有权
    数字宽带闭环相位调制器,具有调制增益校准

    公开(公告)号:US20130223564A1

    公开(公告)日:2013-08-29

    申请号:US13405583

    申请日:2012-02-27

    IPC分类号: H04L27/20

    摘要: One embodiment of the present invention relates to a modulation system having a phase locked loop and an adaptive control. The phased lock loop is configured to receive an input signal and an adaptive signal. The input signal is an unmodulated signal, such as a phase component or phase signal. The phase locked loop is also configured to provide an error signal and an output signal. The error signal indicates one or more modulation errors. The output signal is a modulated version of the input signal that has been corrected using the adaptive signal to mitigate the one or more modulation errors.

    摘要翻译: 本发明的一个实施例涉及一种具有锁相环和自适应控制的调制系统。 相位锁定环被配置为接收输入信号和自适应信号。 输入信号是未调制信号,例如相位分量或相位信号。 锁相环也被配置为提供误差信号和输出信号。 误差信号表示一个或多个调制误差。 输出信号是使用自适应信号校正的输入信号的调制版本,以减轻一个或多个调制误差。

    Method and device for determining the position of a sensor
    46.
    发明授权
    Method and device for determining the position of a sensor 有权
    用于确定传感器位置的方法和装置

    公开(公告)号:US08213003B2

    公开(公告)日:2012-07-03

    申请号:US12482712

    申请日:2009-06-11

    IPC分类号: G01B11/26 G01C1/06

    摘要: The present invention relates to a method and a device for determining the spatial position of a sensor, in which a rough position information initially is determined by rough detection of the position of the sensor, and then the more accurate position of the sensor is obtained by measuring at least three reflectors mounted on the sensor with a laser tracker, wherein the search region of the laser of the laser tracker is limited for the reflectors with reference to the rough position information.

    摘要翻译: 本发明涉及一种用于确定传感器的空间位置的方法和装置,其中通过粗略检测传感器的位置来确定粗略位置信息,然后通过以下方式获得更准确的传感器位置: 使用激光跟踪器测量安装在传感器上的至少三个反射器,其中参考粗略位置信息,激光跟踪器的激光的搜索区域被限制用于反射器。

    Method and apparatus for the determination of the 3D coordinates of an object
    48.
    发明授权
    Method and apparatus for the determination of the 3D coordinates of an object 有权
    用于确定物体的3D坐标的方法和装置

    公开(公告)号:US08094322B2

    公开(公告)日:2012-01-10

    申请号:US12383519

    申请日:2009-03-25

    IPC分类号: G01B11/24

    CPC分类号: G01B11/25

    摘要: In a method for the determination of the 3D coordinates of an object (2), a pattern is projected (1) onto the object (2) and the pattern reflected by the object (2) is taken (3) and evaluated. To improve such a method, a pattern is projected onto a first part region (12) of the object (2) in a first step and the pattern reflected by this part region (12) of the object (2) is taken. In a second step, a pattern is projected onto a second part region of the object (2) and the pattern reflected by this part region of the object (2) is taken. The patterns taken are evaluated.

    摘要翻译: 在用于确定对象(3)的3D坐标的方法中,将图案投影(1)到对象(2)上,并且取得由对象(2)反射的图案(3)并进行评估。 为了改善这种方法,在第一步骤中将图案投影到物体(2)的第一部分区域(12)上,并且拍摄由物体(2)的该部分区域(12)反射的图案。 在第二步骤中,将图案投影到物体(2)的第二部分区域上,并且拍摄由物体(2)的该部分区域反射的图案。 评估所采取的模式。

    Method and apparatus for 3D digitization of an object
    49.
    发明申请
    Method and apparatus for 3D digitization of an object 有权
    一种物体的3D数字化方法和装置

    公开(公告)号:US20100007719A1

    公开(公告)日:2010-01-14

    申请号:US12459640

    申请日:2009-07-06

    IPC分类号: H04N13/02 G06K9/00

    摘要: In a method for 3D digitization of an object (1), a plurality of camera images of the object are recorded and assembled to determine the 3D coordinates of the object. To improve such method, pictures are taken from the object (1), from which 2D feature points (11, 12, 13; 21, 22, 23) of the object (1) are determined. The 3D coordinates of the 2D feature points are determined. The 2D point correspondences (32, 32, 22) between the 2D feature points of a picture and the 2D feature points of another picture are determined. Several of these 2D point correspondences are selected, and an associated 3D transformation is determined. The quality of this 3D transformation is determined with reference to the transformed 3D coordinates of the 2D feature points. Valid 3D feature points are determined therefrom. For assembling the camera images of the object (1), the 3D coordinates of the valid 3D feature points are used.

    摘要翻译: 在用于对象(1)的3D数字化的方法中,记录和组合对象的多个相机图像以确定对象的3D坐标。 为了改善这种方法,从物体(1)取出图像,从物体(1)的2D特征点(11,12,13,21,23,23)确定。 确定2D特征点的3D坐标。 确定图像的2D特征点与另一图像的2D特征点之间的2D点对应(32,32,22)。 选择这些2D点对应中的几个,并且确定相关联的3D变换。 参考2D特征点的变换3D坐标来确定该3D变换的质量。 确定有效的3D特征点。 为了组装对象(1)的相机图像,使用有效3D特征点的3D坐标。