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11. 发明授权

US08130038B2 Class AB operational amplifier and output stage quiescent current control method 有权
标题翻译： AB类运算放大器和输出级静态电流控制方法
公开(公告)号：US08130038B2
公开(公告)日：2012-03-06
申请号：US12854158
申请日：2010-08-10
申请人： Ming-Hung Chang , Che-Hung Lin
发明人： Ming-Hung Chang , Che-Hung Lin
IPC分类号： H03F3/26
CPC分类号： H03F3/45183 , H03F3/3022 , H03F3/45632 , H03F2203/30021 , H03F2203/45222 , H03F2203/45628 , H03F2203/45641
摘要： A class AB operational amplifier includes: a first transistor, for generating a first current; a second transistor, where a second source voltage of the second transistor is equal to a first source voltage of the first transistor, for generating an output stage quiescent current; and an output stage quiescent current controller, coupled to a gate and a source of the first transistor, for controlling a first drain-to-source voltage of the first transistor to be equal to a second drain-to-source voltage of the second transistor. A ratio of the output stage quiescent current to the first current is equal to a ratio of a second W/L ratio of the second transistor to a first W/L ratio of the first transistor.
摘要翻译： AB类运算放大器包括：用于产生第一电流的第一晶体管; 第二晶体管，其中第二晶体管的第二源极电压等于第一晶体管的第一源极电压，用于产生输出级静态电流; 以及耦合到第一晶体管的栅极和源极的输出级静态电流控制器，用于将第一晶体管的第一漏极 - 源极电压控制为等于第二晶体管的第二漏极 - 源极电压。输出级静态电流与第一电流的比值等于第二晶体管的第二W / L比与第一晶体管的第一W / L比的比。

12. 发明申请

US20120013400A1 Current Control Circuit, Class AB Operational Amplifier System and Current Control Method 有权
标题翻译：电流控制电路，AB类运算放大器系统和电流控制方法
公开(公告)号：US20120013400A1
公开(公告)日：2012-01-19
申请号：US12895830
申请日：2010-09-30
申请人： Ming-Hung Chang , Che-Hung Lin
发明人： Ming-Hung Chang , Che-Hung Lin
IPC分类号： H03F3/68 , H03G3/00
CPC分类号： H03F3/45183 , H03F1/0233 , H03F1/0272 , H03F3/3022 , H03F3/45632 , H03F2200/78 , H03F2203/30021 , H03F2203/45681
摘要： A current control circuit for controlling a bias current of a class AB operational amplifier includes: a low current source, for generating a low bias current; a high current source, for generating a high bias current, which is greater than the low bias current; and a comparing and selecting unit, coupled to an output terminal of the class AB operational amplifier, for selecting one of the low bias current and the high bias current to output as the bias current according to an output voltage of the class AB OP.
摘要翻译：用于控制AB类运算放大器的偏置电流的电流控制电路包括：用于产生低偏置电流的低电流源; 高电流源，用于产生大于低偏置电流的高偏置电流; 以及比较选择单元，其耦合到AB类运算放大器的输出端，用于根据AB类的输出电压选择低偏置电流和高偏置电流之一作为偏置电流输出。

13. 发明授权

US08138834B2 Current control circuit, class AB operational amplifier system and current control method 有权
标题翻译：电流控制电路，AB类运算放大器系统和电流控制方法
公开(公告)号：US08138834B2
公开(公告)日：2012-03-20
申请号：US12895830
申请日：2010-09-30
申请人： Ming-Hung Chang , Che-Hung Lin
发明人： Ming-Hung Chang , Che-Hung Lin
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F1/0233 , H03F1/0272 , H03F3/3022 , H03F3/45632 , H03F2200/78 , H03F2203/30021 , H03F2203/45681
摘要： A current control circuit for controlling a bias current of a class AB operational amplifier includes: a low current source, for generating a low bias current; a high current source, for generating a high bias current, which is greater than the low bias current; and a comparing and selecting unit, coupled to an output terminal of the class AB operational amplifier, for selecting one of the low bias current and the high bias current to output as the bias current according to an output voltage of the class AB OP.
摘要翻译：用于控制AB类运算放大器的偏置电流的电流控制电路包括：用于产生低偏置电流的低电流源; 高电流源，用于产生大于低偏置电流的高偏置电流; 以及比较选择单元，其耦合到AB类运算放大器的输出端，用于根据AB类的输出电压选择低偏置电流和高偏置电流之一作为偏置电流输出。

14. 发明授权

US08279307B2 Sharpness processing method and system for digital image 有权
标题翻译：清晰度数字图像处理方法和系统
公开(公告)号：US08279307B2
公开(公告)日：2012-10-02
申请号：US12709758
申请日：2010-02-22
申请人： Che-Hung Lin , Chung-Ta Wu
发明人： Che-Hung Lin , Chung-Ta Wu
IPC分类号： H04N5/208
CPC分类号： H04N5/208 , H04N5/23229 , H04N5/3572
摘要： A sharpness processing method and system for a digital image are applied to an image capturing device for capturing a raw image. The method includes the steps. An image processing procedure is performed on the raw image to generate a registered image. A first sharpness enhancement table and a second sharpness enhancement table respectively sharpness attenuation at an outer-edge region and a central region of the registered image are loaded, and a range between the outer-edge region and the central region is defined as a plurality of critical regions. A sharpness enhancement weight table is loaded, and weight values of each critical region respectively corresponding to the first sharpness enhancement table and the second sharpness enhancement table are searched, for obtaining a sharpness enhanced value of each critical region. An image sharpness processing procedure is performed on the critical region, for correct the registered image into a digital image.
摘要翻译：用于数字图像的锐度处理方法和系统被应用于用于捕获原始图像的图像捕获装置。该方法包括步骤。对原始图像执行图像处理过程以生成登记图像。加载分别在登记图像的外边缘区域和中心区域的锐度衰减的第一锐度增强表和第二锐度增强表，并且外边缘区域和中心区域之间的范围被定义为多个关键地区。加载锐度增强权重表，并且搜索分别对应于第一锐度增强表和第二锐度增强表的每个临界区的权重值，以获得每个临界区的锐度增强值。在临界区域执行图像锐度处理过程，以将登记的图像校正为数字图像。

15. 发明申请

US20120007677A1 Class AB Operational Amplifier and Output Stage Quiescent Current Control Method 有权
标题翻译： AB类运算放大器和输出级静态电流控制方法
公开(公告)号：US20120007677A1
公开(公告)日：2012-01-12
申请号：US12854158
申请日：2010-08-10
申请人： Ming-Hung Chang , Che-Hung Lin
发明人： Ming-Hung Chang , Che-Hung Lin
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F3/3022 , H03F3/45632 , H03F2203/30021 , H03F2203/45222 , H03F2203/45628 , H03F2203/45641
摘要： A class AB operational amplifier includes: a first transistor, for generating a first current; a second transistor, where a second source voltage of the second transistor is equal to a first source voltage of the first transistor, for generating an output stage quiescent current; and an output stage quiescent current controller, coupled to a gate and a source of the first transistor, for controlling a first drain-to-source voltage of the first transistor to be equal to a second drain-to-source voltage of the second transistor. A ratio of the output stage quiescent current to the first current is equal to a ratio of a second W/L ratio of the second transistor to a first W/L ratio of the first transistor.
摘要翻译： AB类运算放大器包括：用于产生第一电流的第一晶体管; 第二晶体管，其中第二晶体管的第二源极电压等于第一晶体管的第一源极电压，用于产生输出级静态电流; 以及耦合到第一晶体管的栅极和源极的输出级静态电流控制器，用于将第一晶体管的第一漏极 - 源极电压控制为等于第二晶体管的第二漏极 - 源极电压。输出级静态电流与第一电流的比值等于第二晶体管的第二W / L比与第一晶体管的第一W / L比的比。

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