Epoxy resin and noval cross-linking agent therefor
    4.
    发明授权
    Epoxy resin and noval cross-linking agent therefor 失效
    环氧树脂及其交联剂

    公开(公告)号:US4471025A

    公开(公告)日:1984-09-11

    申请号:US558584

    申请日:1983-12-06

    CPC classification number: C08G59/4223 Y10T428/31511

    Abstract: A composition of matter including (i) an epoxy resin and (ii) a cross-linking agent therefor, said cross-linking agent being the reaction product of trimellitic anhydride with a diol, and wherein such reaction the molar ratio anhydride/diol is not in excess of 2, is a useful binder for coating compositions, notably the powder paints.

    Abstract translation: 一种物质组合物,包括(i)环氧树脂和(ii)其交联剂,所述交联剂是偏苯三酸酐与二醇的反应产物,并且其中这种反应酐/二醇的摩尔比不是 超过2,是涂料组合物,特别是粉末涂料的有用粘合剂。

    Cross-linkable saturated powderous compositions and powderous painting
and coating compositions containing same
    6.
    发明授权
    Cross-linkable saturated powderous compositions and powderous painting and coating compositions containing same 失效
    可交联的饱和粉末组合物和含有它们的粉末涂料和涂料组合物

    公开(公告)号:US4412034A

    公开(公告)日:1983-10-25

    申请号:US265400

    申请日:1981-05-20

    Abstract: A saturated cross-linkable binder composition adapted for preparing coatings having a non-glossy surface is disclosed which comprises:(a) at least one cross-linkable resin selected from the group consisting of saturated polyester resins and epoxide resins;(b) a cross-linking agent wherein the functional groups are selected from the group consisting of acid groups and acid anhydride groups and, in case the cross-linkable resin is a saturated polyester resin, also masked isocyanate groups; and,(c) having associated therewith a salt of an at least bivalent metal ion and an organic acid anion selected from the group consisting of carboxylic anions and acetylacetonate.These binder compositions are particularly useful as binding agents in powderous paint compositions which yield a paint coating having a non-glossy and textured surface.

    Abstract translation: 公开了一种适于制备具有非光泽表面的涂层的饱和可交联粘合剂组合物,其包含:(a)至少一种选自饱和聚酯树脂和环氧树脂的可交联树脂; (b)交联剂,其中所述官能团选自酸基和酸酐基团,并且在可交联树脂为饱和聚酯树脂的情况下也掩蔽异氰酸酯基团; 和(c)与其相关联的是至少二价金属离子和选自羧酸阴离子和乙酰丙酮化物的有机酸阴离子的盐。 这些粘合剂组合物特别可用作粉末涂料组合物中的粘合剂,其产生具有非光泽和纹理表面的涂料涂料。

    DVB-S2 Demodulator
    9.
    发明授权
    DVB-S2 Demodulator 有权
    DVB-S2解调器

    公开(公告)号:US08630337B2

    公开(公告)日:2014-01-14

    申请号:US12787290

    申请日:2010-05-25

    Applicant: Jacques Meyer

    Inventor: Jacques Meyer

    Abstract: A method for demodulating a modulated signal, by: receiving a signal modulated in n-PSK or n-APSK comprising a succession of symbols organized in frames, each frame comprising a header followed by blocks of data symbols separated by blocks of pilot symbols, determining the phase of the headers and pilot blocks to predict the evolution of the signal phase, correcting the phase of the data symbols according to the evolution of the signal phase, and equalizing the data symbols corrected in phase using equalization coefficients evaluated thanks to estimated or known symbols of the signal, and pre-equalizing the header, pilot and data symbols, which is performed before determining the phase of the headers and pilot blocks, and using the estimated equalization coefficients to equalize the data symbols.

    Abstract translation: 一种用于通过以下方式解调调制信号的方法:接收在n-PSK或n-APSK中调制的信号,所述信号包括以帧组织的一连串符号,每个帧包括一个头部,随后是由导频符号块分隔的数据符号块,确定 标头和导频块的相位来预测信号相位的演变,根据信号相位的演变校正数据符号的相位,以及使用经估计或已知的均衡系数评估的相位校正的数据符号的均衡 信号的符号,并且在确定报头和导频块的相位之前执行的报头,导频和数据符号的预均衡,并且使用估计的均衡系数来均衡数据符号。

    FAST BLIND CHANNEL SEARCH
    10.
    发明申请
    FAST BLIND CHANNEL SEARCH 有权
    快速盲渠道搜索

    公开(公告)号:US20120327977A1

    公开(公告)日:2012-12-27

    申请号:US13336576

    申请日:2011-12-23

    Applicant: Jacques Meyer

    Inventor: Jacques Meyer

    Abstract: A method for searching a digital transmission having unknown carrier and symbol frequencies in a modulated reception signal, includes performing successive trials of several carrier and symbol frequencies, using decreasing values of the symbol frequency, demodulating the reception signal with the tried carrier frequency, filtering the demodulated signal in a band having a width corresponding to the currently tried symbol frequency, and producing samples of the filtered signal. For each currently tried symbol frequency, forming a complex indicator having a real component and an imaginary component established from the successive samples of the filtered signal such that they have cyclostationary properties and that one of the components tends to cancel when the other component tends towards a relative maximum, building the spectrum of the variation of the complex indicator, searching for a singular spike in the spectrum, and determining the real symbol frequency from the frequency of the spike.

    Abstract translation: 一种在调制接收信号中搜索具有未知载波和符号频率的数字传输的方法,包括使用符号频率的减小值来对多个载波和符号频率进行连续的试验,用所试过的载波频率对接收信号进行解调, 在具有对应于当前尝试的符号频率的宽度的频带中的解调信号,并且产生滤波信号的采样。 对于每个当前尝试的符号频率,形成具有从滤波信号的连续采样建立的实分量和虚分量的复指标,使得它们具有循环平稳特性,并且当另一分量趋于朝向 构建复杂指标变化的频谱,寻找频谱中的奇异峰值,并从尖峰频率确定实数符号频率。

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