公开(公告)号：USD462947S1

公开(公告)日：2002-09-17

申请号：US29150877

申请日：2001-12-03

Applicant: David Kung

Designer： David Kung

公开(公告)号：US4591743A

公开(公告)日：1986-05-27

申请号：US562936

申请日：1983-12-19

Applicant: David Kung

Inventor： David Kung

IPC: G05F3/30 ,  H03F1/30 ,  H03K19/003 ,  G06G7/10 ,  G06G7/12

CPC classification number: H03K19/00307 ,  G05F3/30 ,  H03F1/302

Abstract: A metal resistor having a positive temperature coefficient of resistance is connected to a current source to develop a voltage drop that acts as an offset for a .DELTA.V.sub.BE differential amplifier. Since this offset voltage has a positive temperature coefficient it will compensate the resistor coefficient to develop a constant current. The constant current can be employed in a current sink sense-shutoff combination or it can be used to develop a plural output current source/sink combination.

Abstract translation: 具有正温度系数电阻的金属电阻器连接到电流源以产生用作DELTA VBE差分放大器的偏移的电压降。 由于该偏移电压具有正温度系数，因此将补偿电阻系数以产生恒定电流。 恒定电流可以用于电流吸收检测关断组合，或者可以用于开发多个输出电流源/汇组合。

公开(公告)号：US4490631A

公开(公告)日：1984-12-25

申请号：US412638

申请日：1982-08-30

Applicant: David Kung

Inventor： David Kung

IPC: H03K19/082 ,  H03K19/088 ,  H03K19/092 ,  H03K19/20

CPC classification number: H03K19/0826

Abstract: A Schottky driver is disclosed in which the output circuitry is pin selectable totem pole or open collector configuration. Means for reduced propagation delay are present along with means for reducing totem pole current spikes and overall current drain.

Abstract translation: 公开了肖特基驱动器，其中输出电路是引脚可选择的图腾柱或开放集电器配置。 存在降低传播延迟的手段以及降低图腾柱电流尖峰和总体电流消耗的装置。

公开(公告)号：US10332010B2

公开(公告)日：2019-06-25

申请号：US13770666

申请日：2013-02-19

Applicant: Nancy Yan ,  Min He ,  David Kung

Inventor： Nancy Yan ,  Min He ,  David Kung

IPC: G06N7/02 ,  G06N7/04 ,  G06N7/06 ,  G06N7/08 ,  G06N5/02

Abstract: A method and system are presented of automatically suggesting rules for data stored in a table, with the table comprising a plurality of columns. The table is profiled to identify a content type for each of one or more of the plurality of columns. A rule knowledge base is accessed to locate rules specified for identified content types. Then, one or more of the located rules specified for identified content types are presented as suggestions. Acceptance of one or more of the suggested rules is received from a user, and the received validations are stored in the rule knowledge base. The accepted rules are applied to data for quality detection and monitoring. Embodiments are also described where columns are suggested based on a given rule.

公开(公告)号：US09152627B2

公开(公告)日：2015-10-06

申请号：US13623719

申请日：2012-09-20

Applicant: David Kung ,  Min He ,  Mengdan Ma

Inventor： David Kung ,  Min He ,  Mengdan Ma

IPC: G06F17/00 ,  G06F17/30

CPC classification number: G06F17/30 ,  G06F17/30371 ,  G06F17/3051 ,  G06Q10/06

Abstract: In an example embodiment, a method of automatically generating data validation rules from data stored in a column of a table is provided. Outliers for the data are determined by analyzing a profiling statistic for the data, the profiling statistic having a type. Then it is determined if a predefined limit is exceeded, based on a quantity of the outliers determined for the data through the analysis of the profiling statistic. A data validation rule is then automatically generated based on non-outliers detected in the data through the analysis of the profiling statistic, the generated data validation rule also being based on the type of the profiling statistic. The data validation rule can then be applied to data subsequently entered for the column, causing at least a portion of the data subsequently entered for the column to be rejected.

Abstract translation: 在示例实施例中，提供了从存储在表的列中的数据自动生成数据验证规则的方法。 通过分析数据的分析统计量，具有类型的分析统计信息来确定数据的异常值。 然后，基于通过分析统计量的分析为数据确定的异常值的数量，确定是否超过预定义的限制。 然后，基于通过分析统计信息的分析在数据中检测到的非离群值来自动生成数据验证规则，生成的数据验证规则也基于分析统计量的类型。 然后可以将数据验证规则应用于随后为列输入的数据，导致随后输入的数据的至少一部分数据被拒绝。

公开(公告)号：US20150213021A1

公开(公告)日：2015-07-30

申请号：US14167424

申请日：2014-01-29

Applicant: Min He ,  David Kung ,  Suryanarayana Mangipudi ,  Hongfan Qian

Inventor： Min He ,  David Kung ,  Suryanarayana Mangipudi ,  Hongfan Qian

IPC: G06F17/30

CPC classification number: G06F17/3053 ,  G06F17/30312 ,  G06F17/30477 ,  G06F17/30554 ,  G06F17/30997

Abstract: According to some embodiments, a method and an apparatus of enriching search results with metadata are provided to receive a plurality of metadata associated with an entity and storing the plurality of metadata in a repository. A search request associated with the entity is received and search results that comprise a portion of the plurality of metadata stored in the repository are determined.

Abstract translation: 根据一些实施例，提供了利用元数据来丰富搜索结果的方法和装置，以接收与实体相关联的多个元数据并将多个元数据存储在存储库中。 接收与实体相关联的搜索请求，并且确定包含存储在存储库中的多个元数据的一部分的搜索结果。

公开(公告)号：US20140379417A1

公开(公告)日：2014-12-25

申请号：US13924152

申请日：2013-06-21

Applicant: Abhiram Gujjewar ,  David Kung ,  Ray Kuo ,  Min He ,  Cate Hanson

Inventor： Abhiram Gujjewar ,  David Kung ,  Ray Kuo ,  Min He ,  Cate Hanson

IPC: G06Q10/06

CPC classification number: G06Q10/0635

Abstract: A computer implemented method of calculating a cost impact. The method includes associating cost amounts with various rules, using the rules to identify bad data, and calculating an aggregate cost of the bad data. In this manner, the Data Steward can prioritize various data quality improvement projects.

Abstract translation: 计算机实现计算成本影响的方法。 该方法包括将成本金额与各种规则相关联，使用规则来识别不良数据，以及计算坏数据的总成本。 以这种方式，数据管家可以优先考虑各种数据质量改进项目。

公开(公告)号：US08441309B2

公开(公告)日：2013-05-14

申请号：US13604989

申请日：2012-09-06

Applicant: David Kung ,  Leif Lund

Inventor： David Kung ,  Leif Lund

IPC: G05F1/10

CPC classification number: G05F3/30

Abstract: A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R1 and R2, and third and second temperature coefficients, TC3 and TC2, respectively. The resistance values being such that a temperature coefficient of a difference between the base-emitter voltages of the first and second bipolar transistors, TC1, is substantially equal to TC2×(R2/(R1+R2))+TC3×(R1/R1+R2)), resulting in a reference current flowing through each of the first and second bipolar transistors that is substantially constant over temperature. A third resistor coupled between a node and the collector of the second bipolar transistor has a value such that a reference voltage generated at the node is substantially constant over temperature.

Abstract translation: 独立于温度的参考电路包括具有共同耦合的基极的第一和第二双极晶体管。 第一和第二电阻串联耦合在第二双极晶体管的发射极和地之间。 第一和第二电阻器分别具有第一和第二电阻值R1和R2，以及第三和第二温度系数TC3和TC2。 电阻值使得第一和第二双极晶体管的基极 - 发射极之间的电压TC1的温度系数基本上等于TC2×（R2 /（R1 + R2））+ TC3×（R1 / R1 + R2）），导致流经第一和第二双极晶体管中的每一个的参考电流在温度上基本恒定。 耦合在第二双极晶体管的节点和集电极之间的第三电阻器具有使得在节点处产生的参考电压在温度上基本恒定的值。

公开(公告)号：US20130083565A1

公开(公告)日：2013-04-04

申请号：US13248786

申请日：2011-09-29

Applicant: Yury Gaknoki ,  David Kung

Inventor： Yury Gaknoki ,  David Kung

IPC: H02M3/335

CPC classification number: H02M3/33515 ,  H02M1/08 ,  H02M3/33523 ,  H02M2001/0025

Abstract: An example controller for a power converter includes a feedback sampling circuit, drive logic and a false sampling prevention circuit. The feedback sampling circuit is coupled to sample a feedback signal received from a terminal of the controller and to generate a sample signal representative of a value of the feedback signal. The drive logic is coupled to the feedback sampling circuit and coupled to control the power switch to regulate an output of the power converter in response to the sample signal. The false sampling prevention circuit is coupled to receive a sampling complete signal that indicates when the sampling of the feedback signal is complete. The false sampling prevention circuit is further coupled to the drive logic to extend the off time of the power switch until the sampling complete signal indicates that the sampling of the feedback signal by the feedback sampling circuit is complete.

Abstract translation: 用于功率转换器的示例性控制器包括反馈采样电路，驱动逻辑和假采样防止电路。 反馈采样电路被耦合以对从控制器的端子接收的反馈信号进行采样，并产生表示反馈信号的值的采样信号。 驱动逻辑耦合到反馈采样电路并被耦合以响应于采样信号来控制功率开关来调节功率转换器的输出。 虚假采样防止电路被耦合以接收指示反馈信号的采样何时完成的采样完成信号。 假采样防止电路还耦合到驱动逻辑以延长电源开关的关断时间，直到采样完成信号指示反馈采样电路的反馈信号的采样完成为止。

公开(公告)号：US20120326697A1

公开(公告)日：2012-12-27

申请号：US13604989

申请日：2012-09-06

Applicant: David Kung ,  Leif Lund

Inventor： David Kung ,  Leif Lund

IPC: G05F3/16

CPC classification number: G05F3/30

Abstract: A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R1 and R2, and third and second temperature coefficients, TC3 and TC2, respectively. The resistance values being such that a temperature coefficient of a difference between the base-emitter voltages of the first and second bipolar transistors, TC1, is substantially equal to TC2×(R2/(R1+R2))+TC3×(R1/R1+R2)), resulting in a reference current flowing through each of the first and second bipolar transistors that is substantially constant over temperature. A third resistor coupled between a node and the collector of the second bipolar transistor has a value such that a reference voltage generated at the node is substantially constant over temperature.

Abstract translation: 独立于温度的参考电路包括具有共同耦合的基极的第一和第二双极晶体管。 第一和第二电阻串联耦合在第二双极晶体管的发射极和地之间。 第一和第二电阻器分别具有第一和第二电阻值R1和R2，以及第三和第二温度系数TC3和TC2。 电阻值使得第一和第二双极晶体管的基极 - 发射极之间的电压TC1的温度系数基本上等于TC2×（R2 /（R1 + R2））+ TC3×（R1 / R1 + R2）），导致流经第一和第二双极晶体管中的每一个的参考电流在温度上基本恒定。 耦合在第二双极晶体管的节点和集电极之间的第三电阻器具有使得在节点处产生的参考电压在温度上基本恒定的值。