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248 条记录 (耗时 0.038 秒)

    Process for the separation of sugars
    51.
    发明授权
    Process for the separation of sugars 有权
    糖的分离过程

    公开(公告)号：US06451123B1

    公开(公告)日：2002-09-17

    申请号：US09481732

    申请日：2000-01-11

    申请人： Michael Saska ,  Feng Chen

    发明人： Michael Saska ,  Feng Chen

    IPC分类号： B01D1508

    CPC分类号： B01D15/185 ,  B01J41/05 ,  B01J41/20

    摘要： Improved separations of xylose, mannose, galactose, arabinose, glucose, xylitol, arabitol; sorbitol, galactitol, or mannitol (and other monosaccharides and sugar alcohols) from other sugars and sugar alcohols may be achieved by chromatography over hydroxyl-form anion exchange surfaces prepared from anion exchange resins at relatively low hydroxyl concentrations. When a strong base anion exchange resin, such as a chloride-form strong base anion exchange resin, is conditioned with a low concentration of hydroxyl (for example, an NaOH solution with a concentration between 0.1 and 1000 mM, most preferably between 1 and 10 mM), the conditioned resin separates a number of sugars and sugar alcohols from one another, while still allowing ready desorption from the resin.

    摘要翻译： 木糖，甘露糖，半乳糖，阿拉伯糖，葡萄糖，木糖醇，阿糖醇的改进分离; 来自其它糖和糖醇的山梨糖醇，半乳糖醇或甘露醇（和其它单糖和糖醇）可以通过在相对低的羟基浓度下由阴离子交换树脂制备的羟基形式的阴离子交换表面进行层析来实现。 当强碱性阴离子交换树脂（如氯化物形式的强碱阴离子交换树脂）用低浓度的羟基调节（例如浓度为0.1至1000mM的NaOH溶液，最优选1至10 mM）时，调节的树脂将许多糖和糖醇彼此分离，同时仍允许从树脂中解吸。

    Priority encoder
    52.
    发明授权
    Priority encoder 有权
    优先编码器

    公开(公告)号：US06385631B1

    公开(公告)日：2002-05-07

    申请号：US09176618

    申请日：1998-10-21

    申请人： Feng Chen ,  Thomas D. Fletcher

    发明人： Feng Chen ,  Thomas D. Fletcher

    IPC分类号： G06F700

    CPC分类号： G06F7/74

    摘要： A low voltage swing priority encoder comprising pass cells to provide differential voltages indicative of the leading one of a binary tuple. A tree structure with bypass paths allows for the minimization of the number of pass cells in a signal propagation path so as to reduce signal delay. The pass cells are responsive to control voltages indicative of various Boolean functions of the binary tuple, and a pulse voltage signal is applied to the pass cells. In response to the control voltages and the pulse voltage signal, the pass cells provide differential voltages so that voltage swing of the differential voltages are kept below the supply voltage to reduce dynamic power dissipation. Sense amplifiers sense the differential voltages to provide the final logic level indicative of the leading one of the binary tuple.

    摘要翻译： 低电压摆动优先编码器包括通过单元以提供指示二进制元组中的前导元件的差分电压。 具有旁路路径的树结构允许最小化信号传播路径中的传递单元的数量，以便减少信号延迟。 传递单元响应于指示二进制元组的各种布尔函数的控制电压，并且脉冲电压信号被施加到通过单元。 响应于控制电压和脉冲电压信号，通电单元提供差分电压，使得差分电压的电压摆幅保持低于电源电压以减小动态功耗。 感测放大器感测差分电压以提供指示二进制元组中的主要一个的最终逻辑电平。

    Motion estimating method
    53.
    发明授权
    Motion estimating method 失效
    运动估计方法

    公开(公告)号：US5825930A

    公开(公告)日：1998-10-20

    申请号：US811189

    申请日：1997-03-05

    申请人： Dong-seek Park ,  John Villasenor ,  Feng Chen

    发明人： Dong-seek Park ,  John Villasenor ,  Feng Chen

    IPC分类号： H04N7/30 ,  H04N5/14 ,  H04N7/26 ,  H04N7/32 ,  H04N7/50 ,  G06K9/36

    CPC分类号： H04N5/145 ,  H04N19/103 ,  H04N19/126 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/192 ,  H04N19/51 ,  H04N19/61 ,  H04N19/146

    摘要： A motion estimating method for determining a motion vector, using a bit rate-distortion technique in image compression. The motion estimating method includes the steps of obtaining a motion vector (x.sub.o, y.sub.o) which minimizes a predetermined error function, assuming a preferred motion vector (x, y), calculating the difference (x-diff, y-diff) between (x.sub.o, y.sub.o) and (x, y), obtaining the number of bits needed to encode the x-diff and y-diff, determining a bias based on a bias model according to the bit number, obtaining a final cost function value based on the difference between a cost function value and a bias, comparing the final cost function value with a predetermined allowance limit, determining the assumed motion vector (x, y) as a motion vector for a current macroblock and updating the allowance limit by using the cost function value, if the cost function value is smaller than the predetermined allowance limit and discarding the assumed motion vector (x, y) if the cost function value is not smaller than the predetermined allowance limit. The disclosed method is successful in increasing the compression rate.

    摘要翻译： 一种用于使用图像压缩中的比特率失真技术来确定运动矢量的运动估计方法。 运动估计方法包括以下步骤：假设优选的运动矢量（x，y），计算（xo，y-diff）之间的差（x-diff，y-diff），获得最小化预定误差函数的运动矢量 ，哟）和（x，y），获得编码x-diff和y-diff所需的比特数，根据比特数确定偏置模型的偏差，根据该比特数获得最终成本函数值 将成本函数值与偏差之间的差异，将最终成本函数值与预定容限限制进行比较，将假定运动矢量（x，y）确定为当前宏块的运动矢量，并通过使用成本函数 值，如果成本函数值小于预定容许限度，并且如果成本函数值不小于预定容许限度，则丢弃假设的运动矢量（x，y）。 所公开的方法成功地提高了压缩率。

    Method for reducing storage requirements for grouped data values
    54.
    发明授权
    Method for reducing storage requirements for grouped data values 失效
    减少分组数据值的存储要求的方法

    公开(公告)号：US5818877A

    公开(公告)日：1998-10-06

    申请号：US622659

    申请日：1996-03-26

    申请人： Min-Jen Tsai ,  John D. Villasenor ,  Feng Chen

    发明人： Min-Jen Tsai ,  John D. Villasenor ,  Feng Chen

    IPC分类号： H03M7/40 ,  H03M7/46 ,  H04M7/46

    CPC分类号： H03M7/4006 ,  H03M7/40 ,  H03M7/46

    摘要： A method generates a reduced number of values representing a sequence of grouped data values and partitions the reduced number of values by first mapping data values into groups of symbols and then partitioning the resulting stream of symbols. The digits representing the first data value in each group are replaced with symbols from a first alphabet. The most significant digit of the second data value in each group and the sign of that second data value are also represented by a symbol from the first symbol set, while the remaining significant bits of the second data value in each group are represented by symbols from a second symbol set. A stream of symbols which represent a sequence of grouped data values is partitioned into first partition symbol groups and second partition symbol groups. Each first partition symbol group comprises the symbols representing the first data value in each group and also the symbol representing the least significant bit of the second data value which follows. Each second partition symbol group comprises the symbols representing all digits of a second data value excluding the symbol which represented the least significant digits.

    摘要翻译： 一种方法生成表示分组数据值序列的减少数量的值，并且通过首先将数据值映射到符号组，然后划分所得到的符号流，来分割减少数量的值。 表示每组中第一个数据值的数字将被替换为来自第一个字母表的符号。 每个组中的第二数据值的最高有效位和该第二数据值的符号也由来自第一符号集的符号表示，而每组中的第二数据值的剩余有效位由 第二个符号集。 表示分组数据值序列的符号流被划分成第一分区符号组和第二分区符号组。 每个第一分区符号组包括表示每个组中的第一数据值的符号，以及表示随后的第二数据值的最低有效位的符号。 每个第二分区符号组包括表示不包括表示最低有效数字的符号的第二数据值的全部数字的符号。

    OPTICAL IMAGING LENS AND ELECTRONIC DEVICE COMPRISING THE SAME
    59.
    发明申请
    OPTICAL IMAGING LENS AND ELECTRONIC DEVICE COMPRISING THE SAME 有权
    光学成像镜头和包含该镜片的电子设备

    公开(公告)号：US20150301308A1

    公开(公告)日：2015-10-22

    申请号：US14526528

    申请日：2014-10-29

    申请人： Shih-Han Chen ,  Feng Chen ,  Jinhui Gong

    发明人： Shih-Han Chen ,  Feng Chen ,  Jinhui Gong

    IPC分类号： G02B9/60 ,  H04N5/225 ,  G02B13/00

    CPC分类号： G02B13/18 ,  G02B9/60 ,  G02B13/0045

    摘要： An optical imaging lens includes: a first, second, third, fourth and fifth lens element, the first lens element has an object-side surface with a convex part in a vicinity of the optical axis and a convex part in a vicinity of its periphery; the second lens element has an object-side surface with a convex part in a vicinity of its periphery; the third lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery; the fourth lens element has positive refractive power, having an object-side surface with a concave part in a vicinity of its periphery and an image-side surface with a convex part in a vicinity of the optical axis; the fifth lens element has an image-side surface with a concave part in a vicinity of the optical axis and a convex part in a vicinity of its periphery.

    摘要翻译： 光学成像透镜包括：第一，第二，第三，第四和第五透镜元件，第一透镜元件具有在光轴附近具有凸部的物体侧表面和在其周边附近的凸部 ; 第二透镜元件具有在其周边附近具有凸部的物体侧表面; 第三透镜元件具有正折光力，具有在其周边附近具有凹部的物体侧表面; 第四透镜元件具有正折射力，具有在其周边附近具有凹部的物体侧表面和在光轴附近具有凸部的图像侧表面; 第五透镜元件具有在光轴附近具有凹部的像侧表面和在其周边附近的凸部。