公开(公告)号：US06791382B1

公开(公告)日：2004-09-14

申请号：US10117951

申请日：2002-04-08

申请人： Tah-Kang Joseph Ting ,  Gyh-Bin Wang ,  Ming-Song Huang

发明人： Tah-Kang Joseph Ting ,  Gyh-Bin Wang ,  Ming-Song Huang

IPC分类号： H03L706

CPC分类号： G09G5/008 ,  G09G3/3611 ,  G09G2310/08 ,  G09G2330/06 ,  H03L7/197 ,  H04N5/21

摘要： A method to reduce clock noise in a multiple clock circuit is achieved. The method comprises, first, providing a periodic signal. Next, a first clock signal is provided having a frequency that is a constant multiple of the frequency of the periodic signal. Finally, a second clock signal is derived from the periodic signal. The second clock signal has a frequency that is a non-constant multiple of the periodic signal frequency. The non-constant multiple comprises the sum of a constant value plus a time-varying value. The spectral energy at the sum and difference frequencies of the first and second clock signals is reduced by frequency distribution spreading. A circuit is achieved comprising the above method.

摘要翻译： 实现了减少多时钟电路中的时钟噪声的方法。 该方法包括：首先提供周期信号。 接下来，提供具有作为周期信号的频率的恒定倍数的频率的第一时钟信号。 最后，从周期信号导出第二时钟信号。 第二时钟信号具有作为周期信号频率的非常数倍的频率。 非常数倍数包括恒定值加上时变值的和。 第一和第二时钟信号的和频和差频的频谱能量通过频率分布扩展而减小。 实现了包括上述方法的电路。

公开(公告)号：US07068283B2

公开(公告)日：2006-06-27

申请号：US10623911

申请日：2003-07-21

申请人： Ming-Song Huang

发明人： Ming-Song Huang

IPC分类号： G09G5/00

CPC分类号： G09G5/006 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/0673 ,  H04N9/69 ,  H04N9/73

摘要： A display controller provides luminance values to a display, where values for contrast and brightness for the display are constructed within a gamma correction mapping table. The display controller has an original gamma correction mapping table, a gamma correction transform circuit and a transformed gamma correction mapping table. The original gamma correction mapping table contains entries describing a default luminance value to be provided the display for a magnitude of a video input signal. The gamma correction transform circuit receives entries from the original gamma correction mapping table and from the contrast signal and brightness signal, transforms the entries to transformed luminance values. The transformed luminance values are placed in the transformed gamma correction mapping table. The transformed gamma correction mapping table receives a video signal that provides a pointer to the luminance values to be used to drive the display.

摘要翻译： 显示控制器向显示器提供亮度值，其中在伽马校正映射表内构建显示器的对比度和亮度值。 显示控制器具有原始伽马校正映射表，伽马校正变换电路和变换伽马校正映射表。 原始伽马校正映射表包含描述要为视频输入信号的大小显示的默认亮度值的条目。 伽马校正变换电路从原始伽马校正映射表接收条目，并根据对比度信号和亮度信号，将条目变换为变换后的亮度值。 变换的亮度值被放置在变换伽马校正映射表中。 变换伽马校正映射表接收提供指向用于驱动显示器的亮度值的指针的视频信号。

公开(公告)号：US20050017989A1

公开(公告)日：2005-01-27

申请号：US10623911

申请日：2003-07-21

申请人： Ming-Song Huang

发明人： Ming-Song Huang

IPC分类号： G09G3/20 ,  G09G5/00 ,  G09G5/10

CPC分类号： G09G5/006 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/0673 ,  H04N9/69 ,  H04N9/73

摘要： A display controller provides luminance values to a display, where values for contrast and brightness for the display are constructed within a gamma correction mapping table. The display controller has an original gamma correction mapping table, a gamma correction transform circuit and a transformed gamma correction mapping table. The original gamma correction mapping table contains entries describing a default luminance value to be provided the display for a magnitude of a video input signal. The gamma correction transform circuit receives entries from the original gamma correction mapping table and from the contrast signal and brightness signal, transforms the entries to transformed luminance values. The transformed luminance values are placed in the transformed gamma correction mapping table. The transformed gamma correction mapping table receives a video signal that provides a pointer to the luminance values to be used to drive the display.

摘要翻译： 显示控制器向显示器提供亮度值，其中在伽马校正映射表内构建显示器的对比度和亮度值。 显示控制器具有原始伽马校正映射表，伽马校正变换电路和变换伽马校正映射表。 原始伽马校正映射表包含描述要为视频输入信号的大小显示的默认亮度值的条目。 伽马校正变换电路从原始伽马校正映射表接收条目，并根据对比度信号和亮度信号，将条目变换为变换后的亮度值。 变换的亮度值被放置在变换伽马校正映射表中。 变换伽马校正映射表接收提供指向用于驱动显示器的亮度值的指针的视频信号。