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1.发明申请LOW-POWER HIGHLY-ACCURATE PASSIVE MULTIPHASE CLOCK GENERATION SCHEME BY USING POLYPHASE FILTERS 有权使用多相滤波器的低功耗高精度无源时钟产生方案公开(公告)号：US20130266103A1
公开(公告)日：2013-10-10
申请号：US13833407
申请日：2013-03-15
发明人： Hyeon Min Bae , Hyo Sup Won , Joon Young Lee , Jin Ho Park , Tae Ho Kim
IPC分类号： H04L7/00
CPC分类号： H04L7/00 , H03L7/0807 , H03L7/0814 , H04L7/0337
摘要： Exemplary embodiments of the present invention relate to a low-power highly-accurate passive multiphase clock generation scheme by using polyphase filters. An exemplary embodiment of the present invention may be low power phase-rotator-based 25 GB/s CDR architecture in case that half-rate reference clock is provided. It may be suitable for multi-lane scheme and incorporate phase interpolator with improved phase accuracy to make Nyquist-sampling clock phase. To improve the phase accuracy, poly phase filter may be used for converting 4-phase to 8-phase and interpolate adjacent 45 degree different phases. The linearity of phase rotator may be improved by proposed harmonic rejection poly phase filter (HRPPF) using the characteristic of notch filter response.
摘要翻译： 本发明的示例性实施例涉及通过使用多相滤波器的低功率高精度无源多相时钟生成方案。 在提供半速率参考时钟的情况下，本发明的示例性实施例可以是基于低功率相位旋转器的25GB / s CDR架构。 它可能适用于多通道方案，并且并入具有提高的相位精度的相位内插器，以使奈奎斯特采样时钟相位。 为了提高相位精度，多相滤波器可用于将4相转换为8相，并内插相邻的45度相位。 通过使用陷波滤波器响应的特性，提出的谐波抑制多相滤波器（HRPPF）可以改善相位旋转器的线性度。
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2.发明申请ADAPTIVE OPTIMUM CDR BANDWIDTH ESTIMATION BY USING A KALMAN GAIN EXTRACTOR 有权使用卡曼增益提取器的自适应最佳CDR带宽估计公开(公告)号：US20130259178A1
公开(公告)日：2013-10-03
申请号：US13833321
申请日：2013-03-15
发明人： Hyeon Min Bae , Joon Young Lee , Hyo Sup Won , Jong Hyeok Yoon , Jin Ho Park , Tae Ho Kim
IPC分类号： H04L7/00
CPC分类号： H04L7/007 , H04L7/0331
摘要： Exemplary embodiments of the present invention relate to a clock and data recovery (CDR) apparatus with adaptive optimum CDR bandwidth estimation by using a Kalman gain extractor. The Kalman gain extractor includes an off chip digital processor which receives a phase update information from the CDR outputs an estimated optimum Kalman gain obtained by extracting the standard deviation of step sizes of the accumulation jitter from the power spectral density (PSD) of the phase update information, and a on chip digital loop filter consists of a cyclic accumulator which accumulates the phase detector's output, a gain multiplier and a phase interpolator (or DCO) controller. The off chip digital processor includes a storage register, a fast Fourier transform (FFT) processor and an optimum Kalman gain estimator. The storage register stores the phase update information, from which the FFT processor extracts the PSD of the absolute input jitter. The optimum Kalman gain estimator calculates the optimum gain from the PSD of the accumulation jitter. The off chip digital processor may further include a gain calibrator to compensate for the variations in the transition density.
摘要翻译： 本发明的示例性实施例涉及通过使用卡尔曼增益提取器具有自适应最佳CDR带宽估计的时钟和数据恢复（CDR）装置。 卡尔曼增益提取器包括离线数字处理器，其接收来自CDR的相位更新信息，输出通过从相位更新的功率谱密度（PSD）提取积累抖动的步长的标准偏差而获得的估计的最佳卡尔曼增益 信息和片上数字环路滤波器由积累相位检测器输出的循环累加器，增益乘法器和相位内插器（或DCO）控制器组成。 片外数字处理器包括存储寄存器，快速傅里叶变换（FFT）处理器和最佳卡尔曼增益估计器。 存储寄存器存储相位更新信息，FFT处理器从该存储器提取绝对输入抖动的PSD。 最佳卡尔曼增益估计器从累积抖动的PSD计算最佳增益。 片外数字处理器还可以包括增益校准器，以补偿转换密度的变化。
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公开(公告)号：US09443149B2
公开(公告)日：2016-09-13
申请号：US14288844
申请日：2014-05-28
发明人： Ji Ho Kim , Hyun Nam Lee , Soon Min Bae , Soon Min Hwang , Jong Won Choi , Joon Young Lee , Tae Hyun Oh , In So Kweon
CPC分类号： G06K9/00771 , G06K9/00624 , G06T2207/10016 , G08B17/125
摘要： Provided are a fire detecting apparatus and a method thereof for detecting a fire, the method includes operations of extracting a feature of at least one object in an input image by using a value of a brightness difference between pixels of the input image or by using an RGB value of the input image; converting the extracted feature of the at least one object into an N dimensional feature; and performing Support Vector Machine (SVM) machine learning on the N dimensional feature of the at least one object.
摘要翻译： 提供了一种用于检测火灾的火灾检测装置及其方法，该方法包括通过使用输入图像的像素之间的亮度差的值来提取输入图像中的至少一个对象的特征的操作，或者使用 输入图像的RGB值; 将所提取的所述至少一个对象的特征转换为N维特征; 以及对至少一个对象的N维特征执行支持向量机（SVM）机器学习。
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公开(公告)号：US20170078551A1
公开(公告)日：2017-03-16
申请号：US15249585
申请日：2016-08-29
发明人： In-So Kweon , In wook Shim , Joon Young Lee
CPC分类号： H04N5/2351 , H04N5/2352
摘要： As an apparatus for adjusting camera exposure, the apparatus includes: a virtual image generator generating a plurality of virtual images by changing brightness of an image photographed by a camera; a feature image generator generating a plurality of feature images respectively indicating features of the plurality of virtual images; and an exposure controller corresponding a feature value of the plurality of feature images to brightness, estimating reference brightness that corresponds to the maximum feature value, increasing camera exposure when the reference brightness is brighter than the photographed image, and decreasing the camera exposure when the reference brightness is darker than the photographed image.
摘要翻译： 作为调整照相机曝光的装置，该装置包括：虚拟图像生成器，通过改变由照相机拍摄的图像的亮度来生成多个虚拟图像; 产生分别指示所述多个虚拟图像的特征的多个特征图像的特征图像生成器; 以及将所述多个特征图像的特征值对应于亮度的曝光控制器，估计与所述最大特征值相对应的参考亮度，当所述参考亮度比所拍摄的图像更亮时，增加相机曝光，以及当所述参考亮度降低时， 亮度比拍摄的图像更暗。
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公开(公告)号：US10419684B2
公开(公告)日：2019-09-17
申请号：US15249585
申请日：2016-08-29
发明人： In-So Kweon , In wook Shim , Joon Young Lee
IPC分类号： H04N5/235
摘要： As an apparatus for adjusting camera exposure, the apparatus includes: a virtual image generator generating a plurality of virtual images by changing brightness of an image photographed by a camera; a feature image generator generating a plurality of feature images respectively indicating features of the plurality of virtual images; and an exposure controller corresponding a feature value of the plurality of feature images to brightness, estimating reference brightness that corresponds to the maximum feature value, increasing camera exposure when the reference brightness is brighter than the photographed image, and decreasing the camera exposure when the reference brightness is darker than the photographed image.
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