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    • 4. 发明申请
    • System and method of processing an error diffusion halftone image
    • 处理误差扩散半色调图像的系统和方法
    • US20060170972A1
    • 2006-08-03
    • US11229512
    • 2005-09-20
    • Chih-Chieh Lin
    • Chih-Chieh Lin
    • H04N1/40
    • H04N1/4053
    • A system and method of processing an error diffusion half-tone image, which produces a halftone image in accordance with a continuous-tone image. The continuous tone image consists of a two-dimension array of pixels (i, j), where i, j indicate i-th row and j-th column of the image. The method includes: (A) selecting a threshold as a k-th color threshold in accordance with a value of a k-th color of a pixel (i, j); (B) comparing the value of the k-th color of the pixel (i, j) and the k-th color threshold; (C) outputting a bi-level value associated with the k-th color of the pixel (i, j) in accordance with a comparison result produced in step (B); (D) determining an error between the k-th color value of the pixel (i, j) and the bi-level value; (E) diffusing the error to k-th colors of pixels adjacent to the pixel (i, j).
    • 一种处理误差扩散半色调图像的系统和方法,其产生根据连续色调图像的半色调图像。 连续色调图像由像素(i,j)的二维阵列组成,其中i,j表示图像的第i行和第j列。 该方法包括:(A)根据像素(i,j)的第k个颜色的值选择阈值作为第k个颜色阈值; (B)比较像素(i,j)的第k个颜色和第k个颜色阈值的值; (C)根据步骤(B)中产生的比较结果输出与像素(i,j)的第k个颜色相关联的双电平值; (D)确定像素(i,j)的第k个颜色值与双电平值之间的误差; (E)将误差扩散到与像素(i,j)相邻的像素的第k个颜色。
    • 8. 发明授权
    • Microfluidic pump driven by thermoacoustic effect
    • 微流体泵由热声效应驱动
    • US07156487B2
    • 2007-01-02
    • US10726670
    • 2003-12-04
    • Ya-Wen ChouMeen-Dau HooChih-Chieh Lin
    • Ya-Wen ChouMeen-Dau HooChih-Chieh Lin
    • B41J2/135
    • B01L3/0268B01L2400/0436F04B17/00F04B19/006F04F7/00
    • A microfluidic pump driven by thermoacoustic effect is mainly composed of a thermoacoustic device, a fluid-storing tank, and at least one microchannel, etc., wherein the thermoacoustic device may convert thermal energy into acoustic energy. Pressure fluctuation and velocity fluctuation with high frequency are generated by the acoustic wave. According to the high amplitude pressure fluctuation, the microfluid with high moving velocity emitted through microchannels. Since there is no movable part arranged in the thermo-acoustic generator. In the meantime, it indirectly drives the working fluid located in the fluid-storing tank by the manner of indirect contact. So the present invention may be applied in the non-conductive fluid so as to greatly extend its field of application. Moreover, the characteristics of the fluid won't be influenced by the heating process as well. The present invention is indeed a microfluid-driving device that has inventiveness and high application value.
    • 由热声效应驱动的微流体泵主要由热声装置,流体储存罐和至少一个微通道等组成,其中热声装置可将热能转换成声能。 声波产生高频压力波动和速度波动。 根据高振幅压力波动,通过微通道发射高速移动速度的微流体。 由于在热声发生器中没有设置可动部件。 同时,间接地间接地驱动位于流体储存罐中的工作流体。 因此,本发明可以应用于非导电流体中,从而大大延伸其应用领域。 此外,流体的特性也不受加热过程的影响。 本发明的确是具有创造性和高应用价值的微流体驱动装置。