公开(公告)号：US07411432B1

公开(公告)日：2008-08-12

申请号：US11461222

申请日：2006-07-31

Applicant: Xiang Zhu

Inventor： Xiang Zhu

IPC: H03B19/00

CPC classification number: H03K3/356156

Abstract: An integrated circuit of an embodiment may comprise synchronous logic, combinational logic, and clock circuitry to clock the synchronous logic through various states dependent on the combinational logic. The synchronous logic may comprise a plurality of master-slave registers. The combinational logic is configured to drive data inputs of the synchronous logic dependent on states established by the master-slave registers. The clock circuitry is configured to clock the master portion of the master-slave registers with a lag rendering of a clock signal and to clock the slave portion of the registers with a lead rendering of the clock signal. In a particular example, the circuitry may define a frequency divider of a complementary CMOS realization.

Abstract translation: 实施例的集成电路可以包括同步逻辑，组合逻辑和时钟电路，以通过取决于组合逻辑的各种状态对同步逻辑进行时钟。 同步逻辑可以包括多个主从寄存器。 组合逻辑被配置为根据主从寄存器建立的状态来驱动同步逻辑的数据输入。 时钟电路被配置为以时钟信号的滞后时钟来对主从寄存器的主器件进行时钟，并且通过时钟信号的引导时间来对寄存器的从器件部分进行时钟。 在特定示例中，电路可以定义互补CMOS实现的分频器。

公开(公告)号：US09255790B2

公开(公告)日：2016-02-09

申请号：US13880938

申请日：2011-10-18

Applicant: Xiang Zhu

Inventor： Xiang Zhu

IPC: G01B11/24 ,  G01S7/481 ,  G01S17/10 ,  G01S17/48 ,  G01S17/00

CPC classification number: G01B11/24 ,  G01S7/4811 ,  G01S7/4817 ,  G01S17/003 ,  G01S17/10 ,  G01S17/48

Abstract: A sensor for determining a profile of an object surface relative to a reference plane includes a radiation source, a collector, a processor, first and second reflectors and at least one reflective element comprising third and fourth reflectors secured in mutual angular relation. The radiation source projects a launch beam for impingement onto the object surface. The collector detects at least a portion of a return beam reflected by the object surface. The processor determines the profile of the object surface at a point of impingement of the launch beam onto the object surface from at least one characteristic of the at least a portion of the return beam.

Abstract translation: 用于确定对象表面相对于参考平面的轮廓的传感器包括辐射源，收集器，处理器，第一和第二反射器以及包括以相互角度关系固定的第三和第四反射器的至少一个反射元件。 辐射源将发射束投射到物体表面上。 收集器检测由物体表面反射的返回光束的至少一部分。 所述处理器从所述返回光束的所述至少一部分的至少一个特性确定所述物体表面在所述发射束撞击所述物体表面的点处的轮廓。

公开(公告)号：US08654823B1

公开(公告)日：2014-02-18

申请号：US12854135

申请日：2010-08-10

Applicant: Xiang Zhu ,  Greg W. Starr

Inventor： Xiang Zhu ,  Greg W. Starr

IPC: H04B1/38 ,  H04L5/16

CPC classification number: H03K23/42 ,  H03K5/133 ,  H04L7/0012 ,  H04L7/0025 ,  H04L7/0037 ,  H04L7/0045 ,  H04L25/14

Abstract: A data link interface can include a programmable delay chain configured to provide an amount of delay to a first clock signal that clocks a first portion of a data path. The data link interface can include a phase interpolator configured to determine an amount of phase offset applied to a second clock signal that clocks a second portion of the data path. The data link interface further can include a latency detector coupled to the programmable delay chain and the phase interpolator. The latency detector can measure a phase difference between the first and second clock signals and vary the amount of delay applied to the first clock signal and/or the amount of phase offset on the second clock signal responsive to the phase difference.

Abstract translation: 数据链路接口可以包括可编程延迟链，其被配置为向时钟数据路径的第一部分的第一时钟信号提供一定量的延迟。 数据链路接口可以包括相位插值器，其被配置为确定施加到对数据路径的第二部分进行计时的第二时钟信号的相位偏移量。 数据链路接口还可以包括耦合到可编程延迟链和相位内插器的等待时间检测器。 延迟检测器可以测量第一和第二时钟信号之间的相位差，并响应于相位差改变施加到第一时钟信号的延迟量和/或第二时钟信号上的相位偏移量。

公开(公告)号：US20090195790A1

公开(公告)日：2009-08-06

申请号：US12065448

申请日：2006-08-09

Applicant: Xiang Zhu ,  I. Christine Smith ,  Chad English

Inventor： Xiang Zhu ,  I. Christine Smith ,  Chad English

IPC: G01B11/24

CPC classification number: G01B11/24

Abstract: An apparatus for measuring the coordinates of a point on the surface of an object comprises a projection system for projecting a beam of energy onto the surface of the object, a receiving system for receiving reflected beam energy from the target surface, and a detector for detecting the received energy. The projection system comprises a beam expander for expanding the width of the beam, and a focussing device for focussing the projected beam. The position of the reflected beam energy at the detector provides a measure of the range of the point on the target surface using triangulation and the direction of the projected beam provides the x and y coordinates. The focussing device can be controlled to vary the focal length of the projected beam and to control the beam size at the target object to vary the area of the target surface illuminated by the beam and thereby to control the resolution of the measurements.

Abstract translation: 用于测量物体表面上的点的坐标的装置包括：用于将能量束投射到物体的表面上的投影系统，用于从目标表面接收反射光束能量的接收系统，以及用于检测物体的检测器 收到的能量。 投影系统包括用于扩大光束宽度的光束扩展器和用于聚焦投影光束的聚焦装置。 检测器处的​​反射光束能量的位置使用三角测量提供目标表面上的点的范围，并且投影光束的方向提供x和y坐标。 可以控制聚焦装置以改变投射光束的焦距并控制目标物体处的光束尺寸，以改变由光束照射的目标表面的面积，从而控制测量的分辨率。

公开(公告)号：US07525050B1

公开(公告)日：2009-04-28

申请号：US11038991

申请日：2005-01-20

Applicant: Philip A. Weaver ,  Xiang Zhu

Inventor： Philip A. Weaver ,  Xiang Zhu

IPC: G06F3/043 ,  G06F3/033

CPC classification number: G06F3/0433 ,  G06F3/046

Abstract: An apparatus and a method for determining the location of a pointing device in the vicinity of a set of receivers able to receive one or more locating signals transmitted through a medium. The method includes receiving at a receiver a signal that includes a locating signal and an interfering signal, determining an estimated interference signal indicative of the interfering signal included in the signal received, determining a signal indicative of the difference between the received signal and the estimated interference signal, and using the signal indicative of the difference to compute the location of the pointing device on a surface near the set of receivers. One version uses a separate receiver from which to determine the estimated interference signal, while another version uses the received signal at a time when there is expected to be no locating signal present in order to determine the estimated interference signal. An adaptive filter computes the estimated interference signal.

Abstract translation: 一种用于确定指向设备在能够接收通过介质传输的一个或多个定位信号的一组接收机附近的位置的装置和方法。 该方法包括在接收机处接收包括定位信号和干扰信号的信号，确定指示所接收信号中包括的干扰信号的估计干扰信号，确定表示接收信号与估计干扰之间的差异的信号 并且使用指示该差异的信号来计算指示设备在该组接收机附近的表面上的位置。 一个版本使用单独的接收器来确定估计的干扰信号，而另一个版本在预期不存在定位信号的时候使用接收信号，以便确定估计的干扰信号。 自适应滤波器计算估计的干扰信号。

公开(公告)号：US07002418B2

公开(公告)日：2006-02-21

申请号：US10842345

申请日：2004-05-07

Applicant: Xiang Zhu ,  Ming Qu ,  Zhengyu Yuan

Inventor： Xiang Zhu ,  Ming Qu ,  Zhengyu Yuan

IPC: H03L7/00

CPC classification number: H03L7/093 ,  H03L7/0893

Abstract: A phase detector and control signal generator responds to a reference signal and a feedback signal to produce a non-delayed up and down signal. A programmable delay unit delays the non-delayed up and down signal to provide up and down signals for a charge pump. A divider configured to respond to the up and down signals provides a divided clock signal. A non-overlapped clock generator configured to respond to the divided clock signal to provide non-overlapped hold even and hold odd signals for the switched-capacitor ripple-smoothing filter.

Abstract translation: 相位检测器和控制信号发生器响应于参考信号和反馈信号以产生非延迟上升和下降信号。 可编程延迟单元延迟非延迟上升和下降信号以提供电荷泵的上下信号。 配置为响应上升和下降信号的分频器提供分频时钟信号。 非重叠时钟发生器被配置为响应分频时钟信号以提供非重叠保持均衡，并保持用于开关电容器纹波平滑滤波器的奇数信号。

公开(公告)号：US20050248413A1

公开(公告)日：2005-11-10

申请号：US10842345

申请日：2004-05-07

Applicant: Xiang Zhu ,  Ming Qu ,  Zhengyu Yuan

Inventor： Xiang Zhu ,  Ming Qu ,  Zhengyu Yuan

IPC: H03L7/00 ,  H03L7/089 ,  H03L7/093

CPC classification number: H03L7/093 ,  H03L7/0893

Abstract: A phase detector and control signal generator responds to a reference signal and a feedback signal to produce a non-delayed up and down signal. A programmable delay unit delays the non-delayed up and down signal to provide up and down signals for a charge pump. A divider configured to respond to the up and down signals provides a divided clock signal. A non-overlapped clock generator configured to respond to the divided clock signal to provide non-overlapped hold even and hold odd signals for the switched-capacitor ripple-smoothing filter.

Abstract translation: 相位检测器和控制信号发生器响应于参考信号和反馈信号以产生非延迟上升和下降信号。 可编程延迟单元延迟非延迟上升和下降信号以提供电荷泵的上下信号。 配置为响应上升和下降信号的分频器提供分频时钟信号。 非重叠时钟发生器被配置为响应分频时钟信号以提供非重叠保持均衡，并保持用于开关电容器纹波平滑滤波器的奇数信号。

公开(公告)号：US20050218948A1

公开(公告)日：2005-10-06

申请号：US10817215

申请日：2004-04-02

Applicant: Xiang Zhu ,  Ming Qu ,  Yongmin Ge

Inventor： Xiang Zhu ,  Ming Qu ,  Yongmin Ge

IPC: H03L7/00 ,  H03L7/089 ,  H03L7/18

CPC classification number: H03L7/0896 ,  H03L7/18

Abstract: A charge pump for a differential phase-locked loop (PLL) is provided. The charge pump includes a current switch configured to voltage to source and sink a current in a complementary fashion from a pair of differential output nodes. The charge pump includes a common-mode feedback loop to maintain the charging and discharging of the differential output nodes with respect to a common-mode voltage. Transconductance amplifiers are provided within the common-mode feedback loop to provide greater dynamic range to the charging and discharging of the differential output nodes.

Abstract translation: 提供了一种用于差分锁相环（PLL）的电荷泵。 电荷泵包括电流开关，其配置为以一对差分输出节点的互补方式对电流进行电压和吸收电流。 电荷泵包括共模反馈回路，以保持差分输出节点相对于共模电压的充电和放电。 在共模反馈回路内提供跨导放大器，为差分输出节点的充电和放电提供更大的动态范围。

公开(公告)号：USD1067393S1

公开(公告)日：2025-03-18

申请号：US29952653

申请日：2024-07-17

Applicant: Xiang Zhu

Designer： Xiang Zhu

公开(公告)号：US11800076B2

公开(公告)日：2023-10-24

申请号：US16764753

申请日：2019-12-20

Applicant: Xiang Zhu ,  Yuxin Hu ,  Mark Alan Duchaineau ,  Google LLC

Inventor： Xiang Zhu ,  Yuxin Hu ,  Mark Alan Duchaineau

IPC: G06T3/40 ,  G06T5/00 ,  G06T5/20 ,  G06V10/56 ,  G06V10/764 ,  G06V10/77 ,  G06V10/774 ,  H04N9/64 ,  H04N23/88

CPC classification number: H04N9/646 ,  G06T3/40 ,  G06T5/002 ,  G06T5/20 ,  G06V10/56 ,  G06V10/764 ,  G06V10/774 ,  G06V10/7715 ,  H04N23/88 ,  G06T2207/10024 ,  G06T2207/10032 ,  G06T2207/20016 ,  G06T2207/20021 ,  G06T2207/20081 ,  G06T2207/30181

Abstract: Methods, systems, devices, and tangible non-transitory computer readable media for haze reduction are provided. The disclosed technology can include generating feature vectors based on an input image including points. The feature vectors can correspond to feature windows associated with features of different portions of the points. Based on the feature vectors and a machine-learned model, a haze thickness map can be generated. The haze thickness map can be associated with an estimate of haze thickness at each of the points. Further, the machine-learned model can estimate haze thickness associated with the features. A refined haze thickness map can be generated based on the haze thickness map and a guided filter. A dehazed image can be generated based on application of the refined haze thickness map to the input image. Furthermore, a color corrected dehazed image can be generated based on performance of color correction operations on the dehazed image.