公开(公告)号：US07646322B2

公开(公告)日：2010-01-12

申请号：US12204372

申请日：2008-09-04

申请人： Nan-Ku Lu ,  Chun-Chieh Chen ,  Kai-Yao Lin ,  Yi-Zhi Zeng

发明人： Nan-Ku Lu ,  Chun-Chieh Chen ,  Kai-Yao Lin ,  Yi-Zhi Zeng

IPC分类号： H03M1/78

CPC分类号： H03M1/682 ,  H03M1/745 ,  H03M1/747 ,  H03M1/785

摘要： A folded R-2R ladder current-steering digital-to-analog converter is disclosed. In the folded R-2R ladder current-steering digital-to-analog converter, each node in the R-2R ladder is electrically coupled with a plurality of current sources with different weights. Therefore, the numbers of the resisters and current sources can be reduced, and efficient power saving and the high-speed operation can be achieved.

摘要翻译： 公开了一种折叠的R-2R梯形电流转向数模转换器。 在折叠的R-2R梯形电流转向数模转换器中，R-2R梯形图中的每个节点与具有不同重量的多个电流源电耦合。 因此，可以减少电阻和电流源的数量，可以实现高效的省电和高速运行。

公开(公告)号：US07379004B2

公开(公告)日：2008-05-27

申请号：US11340581

申请日：2006-01-27

申请人： Chin-Hung Hsu ,  Ming-Lin Lee ,  Chun-Chieh Chen ,  Nan-Ku Lu

发明人： Chin-Hung Hsu ,  Ming-Lin Lee ,  Chun-Chieh Chen ,  Nan-Ku Lu

IPC分类号： H03M1/66

CPC分类号： H03M1/70 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2320/0276 ,  H03M1/78

摘要： An LCD driving circuit and method for increasing effective bit(s) of the source driver is disclosed. A reference voltage generator generates a group of compensated reference voltage levels that are interlaced with original reference voltage level of original reference voltage generator. One of the multiple groups of reference voltage levels is selected by one or more least significant bits (LSBs), and is then inputted to digital-to-Analog converter of the source driver under control of the one or more least significant bits (LSBs), thereby effectively and economically enhancing the gray levels of the display on the LCD panel.

摘要翻译： 公开了一种用于增加源极驱动器的有效位的LCD驱动电路和方法。 参考电压发生器产生与原始参考电压发生器的原始参考电压电平交错的一组补偿参考电压电平。 多组参考电压电平之一由一个或多个最低有效位（LSB）选择，然后在一个或多个最低有效位（LSB）的控制下被输入到源极驱动器的数模转换器， 从而有效且经济地增强LCD面板上的显示器的灰度级。

公开(公告)号：US07304596B2

公开(公告)日：2007-12-04

申请号：US11419067

申请日：2006-05-18

申请人： Wan-Ru Lin ,  Chun-Chieh Chen ,  Chin-Hung Hsu ,  Nan-Ku Lu

发明人： Wan-Ru Lin ,  Chun-Chieh Chen ,  Chin-Hung Hsu ,  Nan-Ku Lu

IPC分类号： H03M1/66

CPC分类号： H03M1/682

摘要： A digital-to-analog converter includes: a resistor string; a plurality of first switches each connected between an output node and a corresponding one of first endmost, second endmost and intermediate nodes of the resistor string; a decoding unit adapted for converting a higher-order portion of a digital signal into a decoder signal used to control the first switches such that one of which is selected according to the higher-order portion to connect the corresponding one of the nodes to the output node; and first and second voltage-setting units adapted to be connected between one of first and second reference voltage sources and one of the first and second endmost nodes of the resistor string, and operable in response to a lower-order portion of the digital signal to adjust voltages at the first endmost, second endmost and intermediate nodes of the resistor string according to the lower-order portion of the digital signal.

摘要翻译： 数模转换器包括：电阻串; 多个第一开关，各自连接在输出节点和电阻串的第一最终端，第二最末端和中间节点中的相应一个之间; 解码单元，适于将数字信号的高阶部分转换成用于控制第一开关的解码器信号，使得根据高阶部分选择其中的一个以将相应的一个节点连接到输出 节点; 以及第一和第二电压设定单元，其适于连接在第一参考电压源和第二参考电压源中的一个以及电阻器串的第一和第二最后一个节点中的一个之间，并且响应于数字信号的低阶部分而可操作 根据数字信号的低阶部分调整电阻串的第一最末端，第二最末端和中间节点处的电压。

公开(公告)号：US20070176811A1

公开(公告)日：2007-08-02

申请号：US11340581

申请日：2006-01-27

申请人： Chin-Hung Hsu ,  Ming-Lin Lee ,  Chun-Chieh Chen ,  Nan-Ku Lu

发明人： Chin-Hung Hsu ,  Ming-Lin Lee ,  Chun-Chieh Chen ,  Nan-Ku Lu

IPC分类号： H03M1/66

CPC分类号： H03M1/70 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2320/0276 ,  H03M1/78

摘要： An LCD driving circuit and method for increasing effective bit(s) of the source driver is disclosed. A reference voltage generator generates a group of compensated reference voltage levels that are interlaced with original reference voltage level of original reference voltage generator. One of the multiple groups of reference voltage levels is selected by one or more least significant bits (LSBs), and is then inputted to digital-to-Analog converter of the source driver under control of the one or more least significant bits (LSBs), thereby effectively and economically enhancing the gray levels of the display on the LCD panel.

摘要翻译： 公开了一种用于增加源极驱动器的有效位的LCD驱动电路和方法。 参考电压发生器产生与原始参考电压发生器的原始参考电压电平交错的一组补偿参考电压电平。 多组参考电压电平之一由一个或多个最低有效位（LSB）选择，然后在一个或多个最低有效位（LSB）的控制下被输入到源极驱动器的数模转换器， 从而有效且经济地增强LCD面板上的显示器的灰度级。

公开(公告)号：US20060261991A1

公开(公告)日：2006-11-23

申请号：US11419067

申请日：2006-05-18

申请人： Wan-Ru Lin ,  Chun-Chieh Chen ,  Chin-Hung Hsu ,  Nan-Ku Lu

发明人： Wan-Ru Lin ,  Chun-Chieh Chen ,  Chin-Hung Hsu ,  Nan-Ku Lu

IPC分类号： H03M1/66

CPC分类号： H03M1/682

摘要： A digital-to-analog converter includes: a resistor string; a plurality of first switches each connected between an output node and a corresponding one of first endmost, second endmost and intermediate nodes of the resistor string; a decoding unit adapted for converting a higher-order portion of a digital signal into a decoder signal used to control the first switches such that one of which is selected according to the higher-order portion to connect the corresponding one of the nodes to the output node; and first and second voltage-setting units adapted to be connected between one of first and second reference voltage sources and one of the first and second endmost nodes of the resistor string, and operable in response to a lower-order portion of the digital signal to adjust voltages at the first endmost, second endmost and intermediate nodes of the resistor string according to the lower-order portion of the digital signal.

摘要翻译： 数模转换器包括：电阻串; 多个第一开关，各自连接在输出节点和电阻串的第一最终端，第二最末端和中间节点中的相应一个之间; 解码单元，适于将数字信号的高阶部分转换成用于控制第一开关的解码器信号，使得根据高阶部分选择其中的一个以将相应的一个节点连接到输出 节点; 以及第一和第二电压设定单元，其适于连接在第一参考电压源和第二参考电压源中的一个以及电阻器串的第一和第二最后一个节点中的一个之间，并且响应于数字信号的低阶部分而可操作 根据数字信号的低阶部分调整电阻串的第一最末端，第二最末端和中间节点处的电压。