公开(公告)号：US20110104588A1

公开(公告)日：2011-05-05

申请号：US12775062

申请日：2010-05-06

Applicant: Nak Hyun Kwon ,  Inchul Hwang ,  Jae Seung Lee ,  Yung-Eun Sung ,  Tae-Yeol Jeon ,  Sung Jong Yoo ,  Kug-Seung Lee ,  Yong-Hun Cho

Inventor： Nak Hyun Kwon ,  Inchul Hwang ,  Jae Seung Lee ,  Yung-Eun Sung ,  Tae-Yeol Jeon ,  Sung Jong Yoo ,  Kug-Seung Lee ,  Yong-Hun Cho

IPC: H01M4/92 ,  B01J21/18 ,  B01J23/40

CPC classification number: H01M4/92 ,  H01M4/8663 ,  H01M4/885 ,  H01M4/926 ,  Y02E60/50

Abstract: The present invention provides a method of synthesizing a nano-sized transition metal catalyst on a carbon support, including dissolving a stabilizer in ethanol thus preparing a mixture solution, adding a support to the mixture solution thus preparing a dispersion solution, dissolving a transition metal precursor in ethanol thus preparing a precursor solution, mixing the precursor solution with the dispersion solution with stirring, and then performing reduction, thus preparing the nano-sized transition metal catalyst. This method enables the synthesis of transition metal nanoparticles supported on carbon powder having a narrow particle size distribution and a wide degree of dispersion through a simple process, and is thus usefully applied to the formation of an electrode material or the like of a fuel cell.

Abstract translation: 本发明提供了一种在碳载体上合成纳米尺寸的过渡金属催化剂的方法，包括将稳定剂溶解在乙醇中，从而制备混合溶液，向混合溶液中加入载体，从而制备分散液，将过渡金属前体 在乙醇中制备前体溶液，在搅拌下将前体溶液与分散液混合，然后进行还原，从而制备纳米尺寸的过渡金属催化剂。 该方法能够通过简单的工艺合成负载在碳粉末上的过渡金属纳米粒子，其具有窄的粒度分布和宽的分散度，因此有利地用于燃料电池的电极材料等的形成。

公开(公告)号：US5959681A

公开(公告)日：1999-09-28

申请号：US774493

申请日：1996-12-30

Applicant: Yong-Hun Cho

Inventor： Yong-Hun Cho

IPC: H04N9/78 ,  H04B7/26 ,  H04N5/14 ,  H04N5/44 ,  H04N7/01 ,  H04N11/20

CPC classification number: H04N5/144 ,  H04N7/012

Abstract: A method of accurately detecting rapid motion as well as slow motion using two field memories in an interlaced-progressive scanning converter for changing an interlaced-scanned signal into a progressive-scanned signal. A threshold coefficient, which is used for comparison to a difference between temporal interpolation and spatial interpolation values to determine whether a picture is in motion, is determined dynamically in the disclosed method, rather than being a fixed, predetermined value. The threshold coefficient is determined based upon a degree of correlation between data of pixels above and below a pixel to be interpolated. Detection of whether the picture is stationary is based upon the difference between the data of pixels above and below the pixel to be interpolated is greater than a stationary coefficient. The threshold coefficient is maintained as being no less than the value of the stationary coefficient.

Abstract translation: 使用隔行逐行扫描转换器中的两个场存储器精确地检测快速运动以及慢动作的方法，用于将隔行扫描信号改变为逐行扫描信号。 在所公开的方法中动态地确定用于与时间插值和空间内插值之间的差异进行比较以确定图像是否在运动中的阈值系数，而不是固定的预定值。 基于要插值的像素的上方和下方的像素的数据之间的相关度来确定阈值系数。 检测图像是否静止是基于要插值的像素的上下像素的数据之间的差大于平稳系数。 阈值系数保持为不小于平稳系数的值。

公开(公告)号：US20090227445A1

公开(公告)日：2009-09-10

申请号：US12276782

申请日：2008-11-24

Applicant: Jae Seung Lee ,  Yung-Eun Sung ,  Yong-Hun Cho ,  Tae Yeol Jeon

Inventor： Jae Seung Lee ,  Yung-Eun Sung ,  Yong-Hun Cho ,  Tae Yeol Jeon

IPC: H01M4/92

CPC classification number: H01M4/921 ,  H01M4/926 ,  H01M2008/1095

Abstract: A method of preparing a platinum alloy catalyst for a fuel cell electrode includes: (a) adding a carbon material, a platinum precursor, and a transition metal precursor to ethanol and dispersing the mixture; (b) adding sodium acetate powder or an ammonia solution containing ethanol as a solvent to the solution obtained in step (a) and stirring the resulting solution; (c) adding sodium borohydride to the solution obtained in step (b) and reducing the metal ions of the platinum precursor and the transition metal precursor; and (d) obtaining a platinum alloy catalyst in the form of powder through washing and drying processes. This method can reduce the amount of platinum to be used for manufacturing a fuel cell electrode and thereby reduce the manufacturing cost.

Abstract translation: 一种制备用于燃料电池电极的铂合金催化剂的方法包括：（a）向乙醇中加入碳材料，铂前体和过渡金属前体并分散混合物; （b）将乙酸钠粉末或含有乙醇的氨溶液作为溶剂加入到步骤（a）中获得的溶液中并搅拌所得溶液; （c）向步骤（b）中获得的溶液中加入硼氢化钠并还原铂前体和过渡金属前体的金属离子; 和（d）通过洗涤和干燥方法获得粉末形式的铂合金催化剂。 该方法可以减少用于制造燃料电池电极的铂的量，从而降低制造成本。

公开(公告)号：US5786862A

公开(公告)日：1998-07-28

申请号：US723118

申请日：1996-09-30

Applicant: Yeong-Taeg Kim ,  Yong-Hun Cho

Inventor： Yeong-Taeg Kim ,  Yong-Hun Cho

IPC: H04N7/01 ,  H04N7/015

CPC classification number: H04N7/012 ,  H04N7/015

Abstract: A method for interpolating pixel data of an omitted line by use of pixel data from an interlaced scan and an apparatus therefor are described. The pixel interpolation method and apparatus efficiently interpolate edges having various slopes according to a degree of correlation. When an edge has a gentle slope due to extensive correlation, interpolation is performed using a wide-vector. When an error occurs due to high-frequency components such as when bidirectional edges are found, simple vertical interpolation is performed.

Abstract translation: 描述了通过使用来自隔行扫描的像素数据及其装置来内插省略的行的像素数据的方法。 像素插值方法和装置根据相关度有效地内插具有各种斜率的边。 由于广泛的相关性，当边缘具有平缓的斜率时，使用宽向量进行插值。 当发现由于诸如当发现双向边缘的高频分量而发生错误时，执行简单的垂直内插。

公开(公告)号：US09123965B2

公开(公告)日：2015-09-01

申请号：US12775062

申请日：2010-05-06

Applicant: Nak Hyun Kwon ,  Inchul Hwang ,  Jae Seung Lee ,  Yung-Eun Sung ,  Tae-Yeol Jeon ,  Sung Jong Yoo ,  Kug-Seung Lee ,  Yong-Hun Cho

Inventor： Nak Hyun Kwon ,  Inchul Hwang ,  Jae Seung Lee ,  Yung-Eun Sung ,  Tae-Yeol Jeon ,  Sung Jong Yoo ,  Kug-Seung Lee ,  Yong-Hun Cho

IPC: H01M4/92 ,  H01M4/88 ,  H01M4/86

CPC classification number: H01M4/92 ,  H01M4/8663 ,  H01M4/885 ,  H01M4/926 ,  Y02E60/50

Abstract: The present invention provides a method of synthesizing a nano-sized transition metal catalyst on a carbon support, including dissolving a stabilizer in ethanol thus preparing a mixture solution, adding a support to the mixture solution thus preparing a dispersion solution, dissolving a transition metal precursor in ethanol thus preparing a precursor solution, mixing the precursor solution with the dispersion solution with stirring, and then performing reduction, thus preparing the nano-sized transition metal catalyst. This method enables the synthesis of transition metal nanoparticles supported on carbon powder having a narrow particle size distribution and a wide degree of dispersion through a simple process, and is thus usefully applied to the formation of an electrode material or the like of a fuel cell.

Abstract translation: 本发明提供了一种在碳载体上合成纳米尺寸的过渡金属催化剂的方法，包括将稳定剂溶解在乙醇中，从而制备混合溶液，向混合溶液中加入载体，从而制备分散液，将过渡金属前体 在乙醇中制备前体溶液，在搅拌下将前体溶液与分散液混合，然后进行还原，从而制备纳米尺寸的过渡金属催化剂。 该方法能够通过简单的工艺合成负载在碳粉末上的过渡金属纳米粒子，其具有窄的粒度分布和宽的分散度，因此有利地用于燃料电池的电极材料等的形成。