公开(公告)号：US08756245B2

公开(公告)日：2014-06-17

申请号：US11435461

申请日：2006-05-16

Applicant: Tomasz Imielinski ,  Rohit Mittal ,  Scot Zola ,  Jay Kumar Goyal

Inventor： Tomasz Imielinski ,  Rohit Mittal ,  Scot Zola ,  Jay Kumar Goyal

IPC: G06F7/00 ,  G06F17/30

CPC classification number: G06F17/30684 ,  G06F17/30401 ,  G06F17/30654

Abstract: Systems and methods for answering user questions using databases annotated with answerable questions are disclosed. The database includes database items organized into columns. Each of the columns may have a question annotated thereto. The question is a parameterized question that is answerable by the database items in the column. A question answering algorithm is used to search the database for an annotated question corresponding to a question that needs to be answered.

Abstract translation: 公开了使用用可疑问题注释的数据库来回答用户问题的系统和方法。 数据库包括组织成列的数据库项。 每个列可能有一个注释的问题。 问题是一个参数化的问题，由列中的数据库项目负责。 使用问答算法来搜索数据库中与需要回答的问题相对应的注释问题。

公开(公告)号：US20070141983A1

公开(公告)日：2007-06-21

申请号：US11305648

申请日：2005-12-15

Applicant: Jyn-Bang Shyu ,  Robert Olah ,  Rohit Mittal

Inventor： Jyn-Bang Shyu ,  Robert Olah ,  Rohit Mittal

IPC: H04B5/00

CPC classification number: H04L7/0332 ,  H04L7/0087

Abstract: A circuit for recovering data from an incoming data stream according to one embodiment includes a capacitor and a substantially constant current source for charging the capacitor. A subcircuit generates a signal causing the capacitor to discharge upon detecting a first type of transition in the incoming data stream, the capacitor re-charging upon being at least partially discharged. A comparator compares a voltage on a node coupled to the capacitor to a reference voltage, the comparator outputting a first signal if the voltage on the node is higher than the reference voltage and outputting a second signal if the voltage on the node is lower than the reference voltage, the first signal being associated with a first logic value, the second signal being associated with a second logic value.

Abstract translation: 根据一个实施例的用于从输入数据流恢复数据的电路包括电容器和用于对电容器充电的基本上恒定的电流源。 分支电路产生一个信号，使得电容器在检测到输入数据流中的第一类型转换时放电，电容器在至少部分放电后重新充电。 比较器将耦合到电容器的节点上的电压与参考电压进行比较，如果节点上的电压高于参考电压，则比较器输出第一信号，并且如果节点上的电压低于参考电压则输出第二信号 参考电压，所述第一信号与第一逻辑值相关联，所述第二信号与第二逻辑值相关联。

公开(公告)号：US08548098B2

公开(公告)日：2013-10-01

申请号：US11305648

申请日：2005-12-15

Applicant: Jyn-Bang Shyu ,  Robert Olah ,  Rohit Mittal

Inventor： Jyn-Bang Shyu ,  Robert Olah ,  Rohit Mittal

IPC: H04L27/00 ,  H03D3/22

CPC classification number: H04L7/0332 ,  H04L7/0087

Abstract: A circuit for recovering data from an incoming data stream according to one embodiment includes a capacitor and a substantially constant current source for charging the capacitor. A subcircuit generates a signal causing the capacitor to discharge upon detecting a first type of transition in the incoming data stream, the capacitor re-charging upon being at least partially discharged. A comparator compares a voltage on a node coupled to the capacitor to a reference voltage, the comparator outputting a first signal if the voltage on the node is higher than the reference voltage and outputting a second signal if the voltage on the node is lower than the reference voltage, the first signal being associated with a first logic value, the second signal being associated with a second logic value.

Abstract translation: 根据一个实施例的用于从输入数据流恢复数据的电路包括电容器和用于对电容器充电的基本上恒定的电流源。 分支电路产生一个信号，使得电容器在检测到输入数据流中的第一类型转换时放电，电容器在至少部分放电后重新充电。 比较器将耦合到电容器的节点上的电压与参考电压进行比较，如果节点上的电压高于参考电压，则比较器输出第一信号，并且如果节点上的电压低于参考电压则输出第二信号 参考电压，所述第一信号与第一逻辑值相关联，所述第二信号与第二逻辑值相关联。

公开(公告)号：US20090073096A1

公开(公告)日：2009-03-19

申请号：US11855904

申请日：2007-09-14

Applicant: Rohit Mittal ,  Donato Montanari

Inventor： Rohit Mittal ,  Donato Montanari

IPC: G09G3/32 ,  G09G5/00

CPC classification number: H05B33/0818 ,  H05B33/0827

Abstract: An LED driver includes an embedded non-volatile memory (NVM) capable of being programmed and storing control data for setting a variety of features of the LED driver, such as the maximum current for driving the LEDs, analog parameters such as the resistance of the internal resistor for setting the reference current for the LEDs, and the operation modes of the charge pump of the LED driver. This enables implementation of multiple LED driver product options without the need for different metallization steps during the fabrication process for the LED driver.

Abstract translation: LED驱动器包括能够被编程的嵌入式非易失性存储器（NVM），并且存储用于设置LED驱动器的各种特征的控制数据，例如用于驱动LED的最大电流，模拟参数（例如， 用于设置LED参考电流的内部电阻，以及LED驱动器的电荷泵的工作模式。 这使得能够实现多个LED驱动器产品选项，而不需要在LED驱动器的制造过程中的不同的金属化步骤。

公开(公告)号：US20080068066A1

公开(公告)日：2008-03-20

申请号：US11901160

申请日：2007-09-14

Applicant: Rohit Mittal

Inventor： Rohit Mittal

IPC: G05F1/10

CPC classification number: H05B33/086 ,  H05B33/0827

Abstract: A circuit device for a high efficiency current driver for a white LED is presented. The circuit device includes a bias transistor to provide a substantially constant bias current through a bias leg. A driver transistor is connected to the bias transistor and the current in the driver transistor substantially matches the bias current. A current feedback amplifier is configured in series with the driver transistor and a feedback node has a feedback voltage representative of an output voltage. A mirroring transistor connected to the feedback node mirrors the output voltage to the bias transistor thereby allowing the output current to substantially match the bias current when an applied voltage across the driver transistor is below a saturation voltage of the driver transistor thus mitigating effects of headroom limitation in the driver transistor.

Abstract translation: 提出了一种用于白光LED的高效率电流驱动器的电路装置。 电路装置包括偏置晶体管，以通过偏置支路提供基本恒定的偏置电流。 驱动晶体管连接到偏置晶体管，并且驱动晶体管中的电流基本上与偏置电流匹配。 电流反馈放大器被配置为与驱动晶体管串联，并且反馈节点具有代表输出电压的反馈电压。 连接到反馈节点的镜像晶体管将输出电压反射到偏置晶体管，从而当驱动晶体管两端的施加电压低于驱动晶体管的饱和电压时，允许输出电流基本匹配偏置电流，从而减轻了余量限制的影响 在驱动晶体管中。

公开(公告)号：US06952529B1

公开(公告)日：2005-10-04

申请号：US09967696

申请日：2001-09-28

Applicant: Rohit Mittal

Inventor： Rohit Mittal

IPC: H04B10/02 ,  H04B10/08 ,  H04B17/00

CPC classification number: H04B10/07953

Abstract: An apparatus and method for measuring optical signal to noise ratio (OSNR) in a node of an optical data network is disclosed. A peak power level and an average power level are measured for an optical input to an optical detector. The OSNR is determined by selecting an OSNR having the peak power level and the average power level associated with an optical signal traversing an optical path having attenuation and optical amplifier noise.

Abstract translation: 公开了一种在光数据网络的节点中测量光信噪比（OSNR）的装置和方法。 对光检测器的光输入测量峰值功率电平和平均功率电平。 通过选择具有峰值功率电平的OSNR和与穿过具有衰减和光放大器噪声的光路的光信号相关联的平均功率电平来确定OSNR。

公开(公告)号：US5777514A

公开(公告)日：1998-07-07

申请号：US721910

申请日：1996-09-27

Applicant: Rohit Mittal ,  Carlos Alberto Laber

Inventor： Rohit Mittal ,  Carlos Alberto Laber

IPC: H03F3/45 ,  H03F3/16

CPC classification number: H03F3/45179 ,  H03F3/45089 ,  H03F3/45183 ,  H03F3/456 ,  H03F3/45748

Abstract: An operational amplifier having an input and an output stage. The input stage includes first and second source-coupled NMOS input transistors for accepting a differential input voltage and first and second PMOS load transistors for supplying current to each input transistor. A node between the first input transistor and first load transistor is coupled to a gate of a third PMOS transistor having its source coupled to a positive supply and its drain coupled to the sources of the input transistors and to a negative supply through a first biasing transistor. The output stage includes a fourth PMOS transistor having its gate coupled to a node between the second input transistor and the second load transistor and a source coupled to the positive supply voltage. A drain of the output transistor forms an output node and is coupled to the negative supply through a second biasing transistor. To minimize the input offset voltage, a ratio of the width-to-length of the third PMOS transistor to the width-to-length of the fourth PMOS transistor equals to a ratio of a quiescent drain current in the third PMOS transistor to a quiescent drain current in the fourth PMOS transistor. The load transistors have relatively large lengths for high gain while the third and fourth PMOS transistors have small lengths for high speed. Therefore, the operational amplifier has low input offset voltage, high speed and high gain.

Abstract translation: 具有输入和输出级的运算放大器。 输入级包括用于接受差分输入电压的第一和第二源极耦合NMOS输入晶体管，以及用于向每个输入晶体管提供电流的第一和第二PMOS负载晶体管。 第一输入晶体管和第一负载晶体管之间的节点耦合到第三PMOS晶体管的栅极，其第三PMOS晶体管的栅极耦合到正电源，其漏极耦合到输入晶体管的源极，并通过第一偏置晶体管耦合到负电源 。 输出级包括第四PMOS晶体管，其第四PMOS晶体管的栅极耦合到第二输入晶体管和第二负载晶体管之间的节点，以及耦合到正电源电压的源极。 输出晶体管的漏极形成输出节点，并通过第二偏置晶体管耦合到负电源。 为了最小化输入偏移电压，第三PMOS晶体管的宽度与长度之间的比率与第四PMOS晶体管的宽度与长度的比值等于第三PMOS晶体管中的静态漏极电流与静态的 第四PMOS晶体管中的漏极电流。 负载晶体管对于高增益具有相对较大的长度，而第三和第四PMOS晶体管具有用于高速度的小长度。 因此，运算放大器具有低输入失调电压，高速度和高增益。

公开(公告)号：US20080263003A1

公开(公告)日：2008-10-23

申请号：US11316759

申请日：2005-12-22

Applicant: Tomasz Imielinski ,  Rohit Mittal ,  Scot Gregory Zola

Inventor： Tomasz Imielinski ,  Rohit Mittal ,  Scot Gregory Zola

IPC: G06F17/30

CPC classification number: G06F17/30182 ,  G06F17/3064 ,  G06F17/30864

Abstract: In one embodiment, a method for increasing query traffic to a web site includes providing initial information pertaining to an initial object for presentation to a user, and providing connection information identifying a logical connection between the initial object and one or more additional objects for presentation to the user. The connection information contains data prompting the user to submit a new query concerning one of the additional objects. The method may further include receiving the new query concerning one of the additional objects, and providing a result of the new query to the user.

Abstract translation: 在一个实施例中，用于增加对网站的查询流量的方法包括提供与用于呈现给用户的初始对象有关的初始信息，以及提供标识初始对象与一个或多个附加对象之间的逻辑连接的连接信息，以呈现给 用户。 连接信息包含提示用户提交关于其中一个附加对象的新查询的数据。 该方法还可以包括接收关于附加对象之一的新查询，并向用户提供新查询的结果。

公开(公告)号：US20070078842A1

公开(公告)日：2007-04-05

申请号：US11315513

申请日：2005-12-21

Applicant: Scot Zola ,  Eric Glover ,  Rohit Mittal ,  Apostolos Gerasoulis ,  Stephen Orr ,  Gary Chevsky

Inventor： Scot Zola ,  Eric Glover ,  Rohit Mittal ,  Apostolos Gerasoulis ,  Stephen Orr ,  Gary Chevsky

IPC: G06F17/30

CPC classification number: G06F16/951

Abstract: The invention provides a system and method for providing an output in response to a user reference query. A user reference query is received and an answer to the user reference query is determined. A unique entity identifier (EID) for the answer is determined and used to query a reference system to determine one or more reference elements, e.g. a reference summary, a picture, or a video, for example. The one or more reference elements and a text of the answer are provided to an output provider. The output provider combines the one or more reference elements and the answer text into a single output. In one exemplary configuration, the single output is a graphical user interface transmitted as an extensible markup language (XML) file, which integrates the answer text and the one or more reference elements.

Abstract translation: 本发明提供了一种用于响应于用户参考查询提供输出的系统和方法。 接收到用户参考查询，并确定用户参考查询的答案。 确定用于答案的唯一实体标识符（EID），并用于查询参考系以确定一个或多个参考元素，例如， 参考摘要，图片或视频。 一个或多个参考元素和答案的文本被提供给输出提供者。 输出提供者将一个或多个参考元素和答案文本合并成一个输出。 在一个示例性配置中，单个输出是作为可扩展标记语言（XML）文件发送的图形用户界面，其集成了答案文本和一个或多个参考元素。

公开(公告)号：US06915076B1

公开(公告)日：2005-07-05

申请号：US09855319

申请日：2001-05-14

Applicant: Rohit Mittal ,  Chris Kennedy

Inventor： Rohit Mittal ,  Chris Kennedy

IPC: H04B10/02 ,  H04B10/08 ,  H04B10/158 ,  H04B17/00

CPC classification number: H04B10/0799 ,  H04B10/07955 ,  H04B10/695

Abstract: An apparatus and method for detecting a signal in an optical data network is disclosed. A peak power level and an average power level are measured for an optical input to an optical detector. A threshold power level is associated with each average power level that is sufficient to distinguish a data signal form optical noise at the average power level. A signal is detected if the measured peak power level exceeds the threshold power level appropriate for the average power level. In one embodiment, a threshold value of a ratio of the peak power level to the average power level is calculated and a signal is detected if the ratio of the measured peak power level to the average power exceeds the threshold value.

Abstract translation: 公开了一种用于检测光数据网络中的信号的装置和方法。 对光检测器的光输入测量峰值功率电平和平均功率电平。 阈值功率电平与足以区分平均功率电平下形成光学噪声的数据信号的每个平均功率电平相关联。 如果测量的峰值功率电平超过适合于平均功率电平的阈值功率电平，则检测信号。 在一个实施例中，计算峰值功率电平与平均功率电平的比率的阈值，并且如果所测量的峰值功率电平与平均功率的比值超过阈值，则检测信号。