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    • 1. 发明授权
    • Combined decision feedback equalization and linear equalization
    • 组合决策反馈均衡和线性均衡
    • US07599431B1
    • 2009-10-06
    • US10997159
    • 2004-11-24
    • Stephen D. AndersonMichael A. NixBrian T. BrunnJinghui LuDavid E. Tetzlaff
    • Stephen D. AndersonMichael A. NixBrian T. BrunnJinghui LuDavid E. Tetzlaff
    • H03H7/30
    • H04L25/03885H04L25/03038H04L25/03057H04L25/03343
    • A communication system includes a transmitter, a communication channel, and a receiver. The transmitter includes a pre-emphasis module, a summing module, a line driver, and a decision feedback pre-emphasis (DFP) module to produce a pre-emphasized serial stream of data based on a communications channel response and an inter-symbol interference level. The receiver includes a linear equalizer, a summing module, a decision module, and a decision feedback equalization (DFE) module. The linear equalizer produces an equalized serial stream of data. The summing module sums at least one data element of the equalized serial stream of data with DFE data elements to produce equalized data elements. The decision module interprets the equalized data elements to produce interpreted data elements to DFE module, which produces the DFE data elements from the interpreted data elements.
    • 通信系统包括发射机,通信信道和接收机。 发射机包括预加重模块,求和模块,线路驱动器和决策反馈预加重(DFP)模块,以基于通信信道响应和符号间干扰产生预先强调的串行数据流 水平。 接收机包括线性均衡器,求和模块,决策模块和判决反馈均衡(DFE)模块。 线性均衡器产生均衡的串行数据流。 求和模块将均衡的串行数据流中的至少一个数据元素与DFE数据元素相加以产生均衡的数据元素。 决策模块解释均衡的数据元素以产生解释的数据元素到DFE模块,其从解释的数据元素产生DFE数据元素。
    • 4. 发明授权
    • Digital comb filter having a cascaded integrator stage with adjustable
gain
    • 数字梳状滤波器具有可调增益的级联积分器级
    • US6161118A
    • 2000-12-12
    • US96782
    • 1998-06-12
    • Jinghui Lu
    • Jinghui Lu
    • H03H17/06G06F5/00G06F17/10
    • H03H17/0671
    • A comb filter is provided for achieving substantial attenuation of aliasing or imaging bans of a signal to be filtered. The comb filter can perform decimation or interpolation, depending upon its application. Integration can include an integration term with adjustable voltage accumulation at a particular sample point in time. The accumulation factor can be an integer or fractional number and is introduced at a sample count value L within each of M number of samples formed by the rate change switch within the comb filter. The amount of gain being introduced can possibly vary depending on the number of accumulation cycles programmed within configuration registers of the digital signal processor which carries out the comb filter functions. The programmable accumulator avoids having to implement a multiplication operation and the complexities associated therewith.
    • 提供梳状滤波器用于实现待滤波信号的混叠或成像禁令的实质衰减。 梳状滤波器可以根据其应用执行抽取或插值。 集成可以包括在特定采样点处具有可调电压累积的积分项。 积分因子可以是整数或分数,并且在由梳状滤波器内的速率变换开关形成的M个采样的每个样本计数值L内引入。 引入的增益量可以根据执行梳状滤波器功能的数字信号处理器的配置寄存器内编程的累积循环的数量而变化。 可编程累加器避免必须执行乘法运算和与之相关的复杂性。
    • 5. 发明申请
    • Video Codec Method and System
    • 视频编解码方法和系统
    • US20110096990A1
    • 2011-04-28
    • US12605255
    • 2009-10-23
    • Jinghui LuSong QiuHao Wang
    • Jinghui LuSong QiuHao Wang
    • G06K9/34G06K9/36
    • H04N19/33H04N19/103H04N19/136H04N19/17
    • Techniques pertaining to scalable video codec are disclosed. According to one aspect of the present invention, a video image is analyzed and a region of interest (ROI) and a region of non-interest (non-ROI) are identified. By comparing the non-ROI image with that of a previous image, a background ignored identifier is created indicating whether the non-ROI can be ignored during encoding and decoding processes. Based on the status of the background ignored identifier, the encoder encodes the images into a basic layer (BL) and an enhanced layer (EL), and transmits the coded bit streams along with the identifier to a decoder. The decoder reconstructs the image based on the identifier and the BL and the EL bit streams.
    • 公开了与可伸缩视频编解码器有关的技术。 根据本发明的一个方面,分析视频图像,并且识别感兴趣区域(ROI)和非感兴趣区域(非ROI)。 通过将非ROI图像与先前图像的非ROI图像进行比较,创建背景忽略的标识符,指示在编码和解码过程期间是否可以忽略非ROI。 基于背景忽略标识符的状态,编码器将图像编码为基本层(BL)和增强层(EL),并将编码的比特流与标识符一起发送到解码器。 解码器基于标识符和BL和EL比特流重构图像。
    • 6. 发明授权
    • Duty cycle correction of a multi-gigahertz clock signal with crossover point control
    • 具有交叉点控制的多吉赫兹时钟信号的占空比校正
    • US07496155B1
    • 2009-02-24
    • US11228655
    • 2005-09-16
    • Jinghui LuYiqin Chen
    • Jinghui LuYiqin Chen
    • H04L27/00
    • H04L25/0292H04L7/033
    • A clock recovery circuit includes a crossover adjustment circuit operable to adjust a crossover point to adjust a corresponding duty cycle. The adjustment circuit comprises a feedback adjustment combining element which is implemented as summing elements and a crossover point control clock amplifier, an operational amplifier with a resistor in place of a low pass filter at an input of the operational amplifier and feedback driver. The summing element within the feedback adjustment combining element combines input clocks with feedback signals, the crossover point control clock amplifier includes adjustment driver, the two cross coupled PMOS along with the resistor connected between them, reshape input clocks, adjust cross over point and provide output clocks with DCD corrected. A modified Miller capacitor comprising a resistor in series with a capacitor across a drain and gate of a cascode transistor pair is utilized in an output stage to adjust corner frequencies.
    • 时钟恢复电路包括可操作以调整交叉点以调整相应的占空比的交叉调整电路。 调节电路包括反馈调整组合元件,其被实现为求和元件和交叉点控制时钟放大器,运算放大器具有电阻器,代替在运算放大器和反馈驱动器的输入处的低通滤波器。 反馈调整组合元件中的求和元素将输入时钟与反馈信号相结合,交叉点控制时钟放大器包括调整驱动器,两个交叉耦合PMOS以及连接在它们之间的电阻,重新形成输入时钟,调整交叉点并提供输出 DCD校正时钟。 一个改进的米勒电容器包括与串联晶体管对的漏极和栅极上的电容器串联的电阻器,用于输出级以调整转角频率。