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    • 7. 发明申请
    • Internal Heat Exchanger for Air Conditioning System of Motor Vehicle and Such a Circuit
    • 汽车空调系统内部换热器及其电路
    • US20110139416A1
    • 2011-06-16
    • US12965199
    • 2010-12-10
    • Christophe Bernard
    • Christophe Bernard
    • F28D7/10
    • F28D7/106F25B40/00F25B2345/006F25B2700/19F28F1/20F28F1/36F28F13/12F28F2215/14F28F2240/00
    • The present invention relates to an internal heat exchanger of the coaxial tubular type for a motor vehicle air-conditioning circuit, comprising two, low-pressure and high-pressure, portions through which a coolant flows, and to a corresponding air-conditioning circuit incorporating same.This exchanger (E), of the coaxial tubular type, defines at least one radially internal passage (11), preferably for the low-pressure fluid inside an internal tube (10) and a radially external passage (21), preferably for the high-pressure fluid, formed between this internal tube and an external tube (20).According to the invention, spacer means (30) of a thermal conductivity lower than that of the internal and external tubes are movably mounted at least in translation between these two tubes and extend over just part of the length of the external passage, at least one region of this passage which is devoid of such means being intended to be connected to a tapping (40), such as a valve body or a sensor mounting nozzle, by a connecting orifice (23) formed in the external tube at right angle with this region.
    • 本发明涉及一种用于机动车辆空调电路的同轴管式内部热交换器,其包括冷却剂流过的两个低压和高压部分,以及包括相应的空调电路 相同。 该同轴管式交换器(E)限定了至少一个径向内部通道(11),优选地用于内管(10)内部的低压流体和径向外部通道(21),优选为高 压力流体,形成在该内管和外管(20)之间。 根据本发明,导热率低于内部和外部管的热导率的隔离装置(30)至少在这两个管之间平移地可移动地安装,并且仅在外部通道的长度的一部分上延伸,至少一个 该通道的没有这种装置的区域旨在通过形成在外管中的连接孔(23)连接到诸如阀体或传感器安装喷嘴的攻丝(40),该连接孔与该直角形成直角 地区。
    • 8. 发明授权
    • Processing or compressing n-dimensional signals with warped wavelet packets and bandelets
    • 用扭曲的小波包和bandelet处理或压缩n维信号
    • US07944974B2
    • 2011-05-17
    • US10539684
    • 2002-12-17
    • Christophe BernardJérôme KalifaErwan Le PennecStéphane Mallat
    • Christophe BernardJérôme KalifaErwan Le PennecStéphane Mallat
    • H04N7/12H04N11/02H04N11/04
    • H04N19/635H04N19/122H04N19/60H04N19/62
    • A method and apparatus for processing or compressing an n-dimensional digital signal by constructing a sparse representation which takes advantage of the signal geometrical regularity. The invention comprises a warped wavelet packet transform which performs a cascade of warped subband filtering along warping grids of sampling points adapted to the signal geometry. It also comprises a bandeletisation which decorrelates the warped wavelet packet coefficients to produce a sparse representation. An inverse warped wavelet packet transform and an inverse bandeletisation reconstruct a signal from its bandelet representation. The invention comprises a compression system which quantizes and codes the bandelet representation, a decompression system, a restoration system which enhances a signal by filtering its bandelet representation, and a feature vector extraction system for pattern recognition applications of a bandelet representation.
    • 一种通过构造利用信号几何规则性的稀疏表示来处理或压缩n维数字信号的方法和装置。 本发明包括一个弯曲小波包变换,其根据适应于信号几何的采样点的整经网格进行翘曲子带滤波级联。 它还包括一个去除关联扭曲小波包系数以产生稀疏表示的带分离。 逆变形小波包变换和反向带隙化从其带图表示重建信号。 本发明包括一种压缩系统,其对带状表示进行量化和编码,解压缩系统,通过滤波它的频带表示来增强信号的恢复系统,以及用于频带表示的模式识别应用的特征向量提取系统。
    • 9. 发明授权
    • Method for compressing digital images
    • 压缩数字图像的方法
    • US07327893B2
    • 2008-02-05
    • US10428845
    • 2003-05-05
    • Frédéric FalzonChristophe Bernard
    • Frédéric FalzonChristophe Bernard
    • G06K9/36
    • G06T9/005G06T9/007
    • The invention concerns a method for compressing data, in particular images, by transform, in which method this data is projected onto a base of localized orthogonal or biorthogonal functions, such as wavelets. To quantize each of the localized functions with a quantization step that enables an overall set rate Rc to be satisfied, the method includes the following steps: a probability density model of coefficients in the form of a generalized Gaussian is associated with each subband, the parameters α and β of this density model are estimated, while minimizing the relative entropy, or Kullback-Leibler distance, between this model and the empirical distribution of coefficients of each subband, and from this model, for each subband, an optimum quantization step is determined such that the rate allocated is distributed in the various subbands and such that the total distortion is minimal. As a preference, for each subband, the graphs of rate R and distortion D are deduced, from the parameters α and β, as a function of the quantization step and these graphs are tabulated to determine said optimum quantization step.
    • 本发明涉及一种用于通过变换来压缩数据,特别是图像的方法,其中该数据被投影到诸如小波的局部正交或双正交函数的基础上。 为了使得能够满足总体设定速率R C c的量化步长量化每个局部化函数,该方法包括以下步骤:以广义高斯形式的系数的概率密度模型 与每个子带相关联,估计该密度模型的参数α和β,同时使该模型与每个子带的系数的经验分布之间的相对熵或Kullback-Leibler距离最小化,并且对于每个子带, 子带,确定最佳量化步长,使得分配的速率分布在各个子带中,并使得总失真最小。 作为优选,对于每个子带,作为量化步长的函数,从参数α和β推导出速率R和失真D的曲线图,并且将这些图表列表以确定所述最佳量化步长。
    • 10. 发明申请
    • Digital image context compression
    • 数字图像上下文压缩
    • US20060291733A1
    • 2006-12-28
    • US10563959
    • 2004-07-07
    • Frederic FalzonChristophe Bernard
    • Frederic FalzonChristophe Bernard
    • G06K9/46
    • H04N19/61H04N19/63
    • A device (D) for compressing digital image data by wavelet transform, the device including a processor (PM) having i) a module (M1) for transforming image data into wavelet coefficients distributed in sub-bands, ii) a module (M2) for estimating for each coefficient, first and second sets of prediction parameters, associated respectively with so-called north-south and west-east directions, based on values of wavelet coefficients of its north or south neighbors, iii) a module (M3) for quantifying the wavelet coefficients, and iv) an entropy coding module (M4) for determining for each coefficient prediction values of expectation and of the width of a Laplace function representing its probability density, based on the first and/or second sets of prediction parameters and on the wavelet coefficient quantified by its north neighbor or its west neighbor, and for entropy coding of the wavelet coefficients quantified via specific associated expectations and widths.
    • 一种用于通过小波变换压缩数字图像数据的装置(D),所述装置包括处理器(PM),所述处理器(PM)具有:i)用于将图像数据变换成分布在子带中的小波系数的模块(M 1),ii)模块 2)用于基于其北或南邻近的小波系数的值来估计与所谓的南北和西南方向相关联的每个系数,第一和第二组预测参数,iii)模块(M 3)用于量化小波系数,以及iv)熵编码模块(M 4),用于基于第一和/或第二组来确定表示其概率密度的拉普拉斯函数的期望值和宽度的每个系数预测值 的预测参数和由其北邻或西邻相邻量子化的小波系数,以及通过特定相关预期和宽度量化的小波系数的熵编码。