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1. 发明申请

US20060145899A1 Programmable error amplifier for sensing voltage error in the feedback path of digitially programmable voltage sources 有权
标题翻译：可编程误差放大器，用于感测数字可编程电压源的反馈路径中的电压误差
公开(公告)号：US20060145899A1
公开(公告)日：2006-07-06
申请号：US11029307
申请日：2005-01-05
申请人： Piotr Markowski , Chanchal Gupta , John McNeill
发明人： Piotr Markowski , Chanchal Gupta , John McNeill
IPC分类号： H03M7/00
CPC分类号： H02M3/1588 , H02M1/082 , H02M3/157 , Y02B70/1466
摘要： A programmable error amplifier (PEA) that may be used as part of a voltage regulation subsystem to control the output of a digitally programmable voltage source is disclosed. According to various embodiments, the PEA comprises an amplification circuit, an analog voltage sampling circuit and a digital reference voltage sampling circuit. The amplification circuit may employ a negative feedback configuration, and include an amplifier and a plurality of feedback capacitors. The analog voltage sampling circuit is responsive to an analog input voltage (such as the output of the programmable voltage source) and is coupled to the amplification circuit. During a first operational phase (the sampling phase), the analog voltage sampling circuit stores a charge dependent upon the analog input voltage, and during a second operational phase (the conversion phase), the analog voltage sampling circuit transfers the charge to the feedback capacitors of the amplification circuit. The digital reference voltage sampling circuit is responsive to a digital programming word and also is coupled to the amplification circuit. During the first (sampling) phase, the digital reference voltage sampling circuit stores a charge dependent upon the digital programming word, and during the second (conversion) phase transfers the charge to the feedback capacitors of the amplification circuit. A differential voltage based on the difference between the analog voltage and a reference voltage determined by the digital programming word appears across the input terminals of the amplifier.
摘要翻译：公开了可用作电压调节子系统的一部分以控制数字可编程电压源的输出的可编程误差放大器（PEA）。根据各种实施例，PEA包括放大电路，模拟电压采样电路和数字参考电压采样电路。放大电路可以采用负反馈配置，并且包括放大器和多个反馈电容器。模拟电压采样电路响应于模拟输入电压（例如可编程电压源的输出）并耦合到放大电路。在第一个操作阶段（采样阶段），模拟电压采样电路存储取决于模拟输入电压的电荷，在第二个操作阶段（转换阶段）期间，模拟电压采样电路将电荷转移到反馈电容器的放大电路。数字参考电压采样电路响应于数字编程字，并且还耦合到放大电路。在第一（采样）阶段期间，数字参考电压采样电路存储取决于数字编程字的电荷，并且在第二（转换）阶段期间，将电荷转移到放大电路的反馈电容器。基于模拟电压和由数字编程字确定的参考电压之间的差异的差分电压出现在放大器的输入端上。

2. 发明授权

US07190291B2 Programmable error amplifier for sensing voltage error in the feedback path of digitially programmable voltage sources 有权
标题翻译：可编程误差放大器，用于感测数字可编程电压源的反馈路径中的电压误差
公开(公告)号：US07190291B2
公开(公告)日：2007-03-13
申请号：US11029307
申请日：2005-01-05
申请人： Piotr Markowski , Chanchal Gupta , John A. McNeill
发明人： Piotr Markowski , Chanchal Gupta , John A. McNeill
IPC分类号： H03M1/00
CPC分类号： H02M3/1588 , H02M1/082 , H02M3/157 , Y02B70/1466
摘要： A programmable error amplifier (PEA) that may be used as part of a voltage regulation subsystem to control the output of a digitally programmable voltage source is disclosed. According to various embodiments, the PEA comprises an amplification circuit, an analog voltage sampling circuit and a digital reference voltage sampling circuit. The amplification circuit may employ a negative feedback configuration, and include an amplifier and a plurality of feedback capacitors. The analog voltage sampling circuit is responsive to an analog input voltage (such as the output of the programmable voltage source) and is coupled to the amplification circuit. During a first operational phase (the sampling phase), the analog voltage sampling circuit stores a charge dependent upon the analog input voltage, and during a second operational phase (the conversion phase), the analog voltage sampling circuit transfers the charge to the feedback capacitors of the amplification circuit. The digital reference voltage sampling circuit is responsive to a digital programming word and also is coupled to the amplification circuit. During the first (sampling) phase, the digital reference voltage sampling circuit stores a charge dependent upon the digital programming word, and during the second (conversion) phase transfers the charge to the feedback capacitors of the amplification circuit. A differential voltage based on the difference between the analog voltage and a reference voltage determined by the digital programming word appears across the input terminals of the amplifier.
摘要翻译：公开了可用作电压调节子系统的一部分以控制数字可编程电压源的输出的可编程误差放大器（PEA）。根据各种实施例，PEA包括放大电路，模拟电压采样电路和数字参考电压采样电路。放大电路可以采用负反馈配置，并且包括放大器和多个反馈电容器。模拟电压采样电路响应于模拟输入电压（例如可编程电压源的输出）并耦合到放大电路。在第一个操作阶段（采样阶段），模拟电压采样电路存储取决于模拟输入电压的电荷，在第二个操作阶段（转换阶段）期间，模拟电压采样电路将电荷转移到反馈电容器的放大电路。数字参考电压采样电路响应于数字编程字，并且还耦合到放大电路。在第一（采样）阶段期间，数字参考电压采样电路存储取决于数字编程字的电荷，并且在第二（转换）阶段期间，将电荷转移到放大电路的反馈电容器。基于模拟电压和由数字编程字确定的参考电压之间的差异的差分电压出现在放大器的输入端上。

3. 发明申请

US20060004693A1 GRAPHICAL USER INTERFACE FOR EXPLORING DATABASES 审中-公开
标题翻译：用于探索数据库的图形用户界面
公开(公告)号：US20060004693A1
公开(公告)日：2006-01-05
申请号：US10709616
申请日：2004-05-18
申请人： Sujatha Ramanathan , Chanchal Gupta
发明人： Sujatha Ramanathan , Chanchal Gupta
IPC分类号： G06F17/30
CPC分类号： G06F16/907
摘要： In a computer system, a method of searching through metadata from a plurality of data tables concurrently, the data tables being defined by a schema and stored in a database(s) is provided. The method comprises generating a graphical user interface, the graphical user interface having at least one item including a predefined instruction label which is associated with a corresponding SQL query for defining a search through the metadata from the plurality of data tables; receiving user input, through the graphical user interface, selecting the schema and selecting the item having the predefined instruction label; and processing the received user input so as to conduct a concurrent search through metadata from the plurality of tables, the type of search being based on the selected item having the predefined instruction label.
摘要翻译：在计算机系统中，提供了一种从多个数据表中同时搜索元数据的方法，数据表由模式定义并存储在数据库中。所述方法包括生成图形用户界面，所述图形用户界面具有至少一个项目，所述项目包括预定义的指令标签，所述预定义指令标签与相应的SQL查询相关联，用于通过来自所述多个数据表的所述元数据定义搜索; 通过图形用户界面接收用户输入，选择模式并选择具有预定义指令标签的项目; 以及处理所接收的用户输入，以便通过来自所述多个表的元数据进行并发搜索，所述搜索类型是基于所选择的具有所述预定义指令标签的项目。

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