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    • 1. 发明授权
    • Frequency demodulator for recovering SECAM chrominance signal and method thereof
    • 用于恢复SECAM色度信号的频率解调器及其方法
    • US08107013B2
    • 2012-01-31
    • US11889647
    • 2007-08-15
    • Hyo-Ju KimSeong-Won LeeDo-Gyun KimYun-Sung WangJi-Hoon Jang
    • Hyo-Ju KimSeong-Won LeeDo-Gyun KimYun-Sung WangJi-Hoon Jang
    • H04N9/66
    • H04N11/186
    • An apparatus for recovering a chrominance signal from a sequential color with memory (SECAM) composite video baseband signal (CVBS), and more particularly, to a frequency demodulator and method of recovering a SECAM chrominance signal which can utilize both a real number portion and an imaginary number portion, and generate a frequency-demodulated chrominance signal using an arctangent approximation, and thereby can simplify a circuit configuration of a frequency demodulator to perform a fixed-point calculation is provided. A frequency demodulator for recovering a chrominance signal, the frequency demodulator comprises a phase differentiator generating a phase difference component between neighboring samples from an input signal and a phase estimator calculating a phase difference between the neighboring samples by using an arctangent approximation, based on the generated phase difference component, wherein the frequency demodulator generates a frequency-demodulated chrominance signal and the phase difference corresponds to the chrominance signal.
    • 一种用于利用存储器(SECAM)复合视频基带信号(CVBS)从顺序色彩恢复色度信号的装置,更具体地说,涉及一种频率解调器和恢复SECAM色度信号的方法,该SECAM色度信号可以利用实数部分和 虚数部分,并且使用反正切近似生成频率解调色度信号,从而可以简化频率解调器的电路配置以进行定点计算。 一种用于恢复色度信号的频率解调器,所述频率解调器包括相位微分器,所述相位微分器基于输入信号产生相邻采样之间的相位差分量;以及相位估计器,基于所生成的相位估计器,所述相位估计器通过使用反正切近似来计算相邻采样之间的相位差 相位差分量,其中频率解调器产生频率解调色度信号,相位差对应于色度信号。
    • 2. 发明授权
    • Polyols and polyurethanes, polyurethaneforms using the same
    • 多元醇和聚氨酯,使用相同的聚氨酯塑料
    • US08030364B2
    • 2011-10-04
    • US11577050
    • 2005-10-10
    • Do Gyun KimHyosung Kim
    • Do Gyun KimHyosung Kim
    • C08J11/04
    • C08J11/22C08G18/4018C08G18/4288C08G18/4833C08G18/606C08G18/6492C08G2101/0025C08J2367/02C08J2375/04C08J2377/00Y02W30/706
    • The present invention relates to a preparing method of polyols, polyurethane and polyurethane foams using the same. Polyester, polyamide and polyurethane are depolymerized with the polymeric fatty acid mono(polyhydroxyl alcohol)ide composition and additionally reacted with the polybasic acid, polyol and amine to prepare acid value of 05-˜1 mgKOH/g, hydroxyl value of 10˜500 mgKOH/g, and amine value of 1˜50 mgKOH/g in polyol. This is to transform the double bond of the unsaturated fatty acid from the component of the oils and fats into a conjugated double bond to induce the Diels-Alder reaction, and with the improvement of the reactivity to form a stable combination in the chemical structure to prevent the separate leaching appearance of fat and fatty oil from the final product. In particular, by recycling waste edible oil and waste synthetic resin that can be employed as industrially useful material, the invention provides environment advantages.
    • 本发明涉及使用其的多元醇,聚氨酯和聚氨酯泡沫的制备方法。 聚酯,聚酰胺和聚氨酯用聚合脂肪酸单(多羟基醇)组合物解聚,并与多元酸,多元醇和胺反应,制备酸值为05〜1mgKOH / g,羟值为10〜500mgKOH / g,多元醇中胺值为1〜50mgKOH / g。 这是将不饱和脂肪酸的双键从油脂的成分转化为共轭双键,诱导狄尔斯 - 阿尔德反应,随着反应活性的提高,在化学结构中形成稳定的组合 防止最终产品中脂肪和脂肪油的单独浸出外观。 特别地,通过回收可以用作工业上有用的材料的废食用油和废合成树脂,本发明提供了环境优点。
    • 3. 发明申请
    • Recycled Method for a Wasted Polymer Which is Mixed Polyester Polyamide and Reclaimed Materials Thereof
    • 作为混合聚酯聚酰胺及其回收材料的废聚合物的回收方法
    • US20080194713A1
    • 2008-08-14
    • US10599339
    • 2005-03-24
    • Do Gyun KimHyo-Sung Kim
    • Do Gyun KimHyo-Sung Kim
    • C08J11/04
    • C08J11/24C08J2367/00C08J2377/00Y02W30/706
    • The present invention relates to a recycling method of a mixed waste of polyester and polyamide (hereinafter, referred to as “mixed waste”) in which polyesters including polyethylene terephthalate and polyamides are inseparable from one another. In accordance with the recycling method of the present invention, it is possible to prepare a solid block polymer having an acid value of 1 to 150 mgKOH/g, a weight average molecular weight of 3,000 to 50,000 and a softening point of 10 to 150° C., or a liquid polyester-amide block polymer composition having good compatibility, solubility and dispersibility. In addition, the polymer having an acid value of more than 20 mgKOH/g is reacted with a basic compound to form a neutralized salt which is then used to prepare a water-soluble polyester-amide block polymer composition. The prepared water-soluble polyester-amide block polymer composition can be utilized as industrially useful material such as synthetic resin fine particles, microcapsules, adsorbents, polymerization toner binders for electron photography, fiber processing agents, sizing agents for use in paper-making and paper strength agents, wastewater treatment agents, dispersants, cement admixtures, inkjet ink binders, epoxy resin curing agents and modifiers, water-dispersible epoxy resin curing agents and modifiers. The solid or liquid polyester-amide block polymer composition having an acid value of less than 10 mgKOH/g can be employed as industrially useful material such as printer ink, coating materials, powder paints, adhesives, hot melt adhesives, binders for toner manufactured by grinding methods, waterproofing agents, unsaturated polyester-amide resins, and polyurethane resins.
    • 本发明涉及聚酯和聚酰胺(以下称为“混合废料”)的混合废弃物的再循环方法,其中包括聚对苯二甲酸乙二醇酯和聚酰胺在内的聚酯彼此不可分离。 根据本发明的回收方法,可以制备酸值为1〜150mgKOH / g,重均分子量为3,000〜50,000,软化点为10〜150℃的固体嵌段聚合物 C.或具有良好相容性,溶解性和分散性的液体聚酯 - 酰胺嵌段聚合物组合物。 此外,酸值大于20mgKOH / g的聚合物与碱性化合物反应形成中和盐,然后将其用于制备水溶性聚酯 - 酰胺嵌段聚合物组合物。 制备的水溶性聚酯 - 酰胺嵌段聚合物组合物可用作工业上有用的材料,例如合成树脂细颗粒,微胶囊,吸附剂,用于电子照相的聚合调色剂粘合剂,纤维加工剂,用于造纸和纸的上浆剂 强化剂,废水处理剂,分散剂,水泥混合物,喷墨油墨粘合剂,环氧树脂固化剂和改性剂,水分散性环氧树脂固化剂和改性剂。 具有酸值小于10mgKOH / g的固体或液体聚酯 - 酰胺嵌段聚合物组合物可用作工业上有用的材料,例如印刷油墨,涂料,粉末涂料,粘合剂,热熔粘合剂,由 研磨方法,防水剂,不饱和聚酯酰胺树脂和聚氨酯树脂。