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    • 1. 发明授权
    • Apparatus and method for digital correction of non-linearity using a piecewise linear approximation technique
    • 使用分段线性近似技术进行非线性数字校正的装置和方法
    • US06573934B1
    • 2003-06-03
    • US09205545
    • 1998-12-03
    • Je-suk Lee
    • Je-suk Lee
    • H04N5202
    • H04N5/202
    • Digital correction of non-linearity using a piecewise linear approximation method generates uniform errors of minimal magnitude regardless of the size of an input signal. The non-linear curve is partitioned into a number of sections which are increased over conventional techniques, without increasing the number of function values, or the amount of hardware required. A non-linear curve is divided into a first direct line and a second direct line using a piecewise linear approximation method. A third direct line links two points spaced to either side of an inflection point at the intersection of the first and second direct lines by a predetermined distance. The slope of the third direct line corresponds to the average of the slopes of the first and second direct lines. When an input x lies in the section of the third direct line, a corrected signal according to the third direct line is generated. When the input x is between a predetermined point of the first or second direct lines and the starting point of the third direct line, a corrected signal according to the first or second direct lines is generated.
    • 使用分段线性近似方法的非线性数字校正产生最小幅度的均匀误差,而与输入信号的大小无关。 非线性曲线被划分成多个部分,其在常规技术中增加,而不增加功能值的数量或所需的硬件量。 使用分段线性近似法将非线性曲线分成第一直线和第二直线。 第三直接线将在第一和第二直线的交叉点处的拐点的任一侧间隔开预定距离的两个点。 第三直线的斜率对应于第一和第二直线的斜率的平均值。 当输入x位于第三直线的部分时,产生根据第三直线的校正信号。 当输入x在第一或第二直线的预定点与第三直线的起始点之间时,产生根据第一直线或第二直线的校正信号。
    • 4. 发明授权
    • Method of adjusting hue and device therefor
    • 色调调整方法及其设备
    • US5764308A
    • 1998-06-09
    • US663581
    • 1996-06-14
    • Je-suk Lee
    • Je-suk Lee
    • H04N9/64H04N9/77
    • H04N9/643
    • A method of adjusting hue in color video signals partitions the region of all available hues into subregions in accordance with the signs of U and V components of input color video signals, which U and V signals are respectively proportional to blue-minus-luminance and red-minus luminance color-difference signals. The hue in each subregion is adjusted independently of the hues in the other subregions. Within each subregion, each of the U and V components of the input color video signals that fall therein is gain-adjusted by prescribed factors according to the subregion. A hue adjustment device determines from the signs U and V components of input color video signals which of the subregions they fall into, and adjusts the hue in each subregion to facilitate more accurate hue adjustment.
    • 调整彩色视频信号色调的方法根据输入彩色视频信号的U和V分量的符号将所有可用色调的区域划分成次区域,这些U和V信号分别与蓝 - 负亮度成正比,红色 - 亮度色差信号。 每个次区域的色调都与其他分区域的色调无关。 在每个子区域内,其中落入其中的输入彩色视频信号的U和V分量中的每一个通过根据该子区域的规定因子进行增益调整。 色相调节装置根据输入彩色视频信号的符号U和V分量确定它们落入的子区域中的哪一个,并且调整每个子区域中的色调以促进更准确的色调调整。
    • 6. 发明申请
    • High-speed image pickup method and controller for image pickup device
    • 用于图像拾取装置的高速图像拾取方法和控制器
    • US20070019093A1
    • 2007-01-25
    • US11521815
    • 2006-09-15
    • Je-suk LeeSi-young Chin
    • Je-suk LeeSi-young Chin
    • H04N5/335
    • H04N5/335H04N5/3454H04N5/3728H04N5/374
    • A high-speed image pickup method and controller of an image pickup device are provided. The method includes applying a vertical transmission signal to a vertical transmission register in the form of a field transmission signal, thereby simultaneously transmitting charges accumulated at a plurality of pixels to the vertical transmission register; applying the vertical transmission signal to the vertical transmission register in the form of a line transmission signal, thereby transmitting a charge signal corresponding to each horizontal line in the vertical transmission register to the horizontal transmission register at a high speed, and applying a horizontal transmission signal to the horizontal transmission register, thereby outputting the charge signal of the horizontal transmission register; transmitting the charge signal of the vertical transmission register to the horizontal transmission register at a normal speed when a horizontal line of which the charge signal is transmitted is a first horizontal line, and applying the horizontal transmission signal to the horizontal transmission register, thereby outputting the charge signal of the horizontal transmission register; and transmitting the charge signal of the vertical transmission register to the horizontal transmission register at the high speed when a horizontal line of which the charge signal is transmitted is a second horizontal line, and applying the horizontal transmission signal to the horizontal transmission register, thereby outputting the charge signal of the horizontal transmission register. Accordingly, the high-speed image pickup method and controller can realize high-speed image pickup using a normal image pickup device instead of using a special high-speed image pickup device.
    • 提供了高速图像拾取方法和图像拾取装置的控制器。 该方法包括以场传输信号的形式将垂直传输信号施加到垂直传输寄存器,由此同时将在多个像素处累积的电荷传送到垂直传输寄存器; 以垂直发送寄存器的形式将垂直发送信号施加到垂直发送寄存器,从而将垂直发送寄存器中对应于每条水平线的充电信号以高速发送到水平发送寄存器,并施加水平发送信号 到水平发送寄存器,从而输出水平发送寄存器的充电信号; 当发送电荷信号的水平线为第一水平线时,垂直发送寄存器的充电信号以正常速度发送到水平发送寄存器,并将水平发送信号施加到水平发送寄存器,从而输出 水平传输寄存器的充电信号; 并且当发送电荷信号的水平线为第二水平线时,将垂直发送寄存器的充电信号高速发送到水平发送寄存器,并将水平发送信号施加到水平发送寄存器,从而输出 水平发送寄存器的充电信号。 因此,高速图像拾取方法和控制器可以使用普通图像拾取装置来实现高速图像拾取,而不是使用特殊的高速图像拾取装置。
    • 7. 发明授权
    • High-speed image pickup method and controller for image pickup device
    • US07129977B2
    • 2006-10-31
    • US10000287
    • 2001-11-02
    • Je-suk LeeSi-Young Chin
    • Je-suk LeeSi-Young Chin
    • H04N5/335H04N3/14
    • H04N5/335H04N5/3454H04N5/3728H04N5/374
    • A high-speed image pickup method and controller of an image pickup device are provided. The method includes applying a vertical transmission signal to a vertical transmission register in the form of a field transmission signal, thereby simultaneously transmitting charges accumulated at a plurality of pixels to the vertical transmission register; applying the vertical transmission signal to the vertical transmission register in the form of a line transmission signal, thereby transmitting a charge signal corresponding to each horizontal line in the vertical transmission register to the horizontal transmission register at a high speed, and applying a horizontal transmission signal to the horizontal transmission register, thereby outputting the charge signal of the horizontal transmission register; transmitting the charge signal of the vertical transmission register to the horizontal transmission register at a normal speed when a horizontal line of which the charge signal is transmitted is a first horizontal line, and applying the horizontal transmission signal to the horizontal transmission register, thereby outputting the charge signal of the horizontal transmission register; and transmitting the charge signal of the vertical transmission register to the horizontal transmission register at the high speed when a horizontal line of which the charge signal is transmitted is a second horizontal line, and applying the horizontal transmission signal to the horizontal transmission register, thereby outputting the charge signal of the horizontal transmission register. Accordingly, the high-speed image pickup method and controller can realize high-speed image pickup using a normal image pickup device instead of using a special high-speed image pickup device.