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公开(公告)号：US08369121B2
公开(公告)日：2013-02-05
申请号：US13351689
申请日：2012-01-17
Applicant: Carl Gyllenhammer , Greg Watson , Venkat Gaddam , Varadarajan Srinivasan , Sandeep Khanna , Chetan Deshpande
Inventor： Carl Gyllenhammer , Greg Watson , Venkat Gaddam , Varadarajan Srinivasan , Sandeep Khanna , Chetan Deshpande
IPC: G11C15/00
Abstract: The power consumption of a search engine such as a CAM device is dynamically adjusted to prevent performance degradation and/or damage resulting from overheating. For some embodiments, the CAM device is continuously sampled to generate sampling signals indicating the number of active states and number of compare operations performed during each sampling period. The sampling signals are accumulated to generate an estimated device power profile, which is compared with reference values corresponding to predetermined power levels to generate a dynamic power control signal indicating predicted increases in the device's operating temperature resulting from its power consumption. The dynamic power control signal is then used to selectively reduce the input data rate of the CAM device, thereby reducing power consumption and allowing the device to cool.
Abstract translation: 动态地调整诸如CAM设备的搜索引擎的功耗以防止由过热导致的性能下降和/或损坏。 对于一些实施例，CAM设备被连续采样以产生指示在每个采样周期期间执行的活动状态数量和比较操作数的采样信号。 累积采样信号以产生估计的设备功率曲线，其与与预定功率水平相对应的参考值进行比较，以产生指示由其功耗引起的设备的工作温度的预测增加的动态功率控制信号。 然后使用动态功率控制信号来选择性地降低CAM设备的输入数据速率，从而降低功耗并允许设备冷却。
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公开(公告)号：US08111533B2
公开(公告)日：2012-02-07
申请号：US13190179
申请日：2011-07-25
Applicant: Carl Gyllenhammer , Greg Watson , Venkat Gaddam , Varadarajan Srinivasan , Sandeep Khanna , Chetan Deshpande
Inventor： Carl Gyllenhammer , Greg Watson , Venkat Gaddam , Varadarajan Srinivasan , Sandeep Khanna , Chetan Deshpande
IPC: G11C15/00
Abstract: The power consumption of a search engine such as a CAM device is dynamically adjusted to prevent performance degradation and/or damage resulting from overheating. For some embodiments, the CAM device is continuously sampled to generate sampling signals indicating the number of active states and number of compare operations performed during each sampling period. The sampling signals are accumulated to generate an estimated device power profile, which is compared with reference values corresponding to predetermined power levels to generate a dynamic power control signal indicating predicted increases in the device's operating temperature resulting from its power consumption. The dynamic power control signal is then used to selectively reduce the input data rate of the CAM device, thereby reducing power consumption and allowing the device to cool.
Abstract translation: 动态地调整诸如CAM设备的搜索引擎的功耗以防止由过热导致的性能下降和/或损坏。 对于一些实施例，CAM设备被连续采样以产生指示在每个采样周期期间执行的活动状态数量和比较操作数的采样信号。 累积采样信号以产生估计的设备功率分布，其与对应于预定功率电平的参考值进行比较，以产生指示由其功率消耗导致的设备的工作温度的预测增加的动态功率控制信号。 然后使用动态功率控制信号来选择性地降低CAM设备的输入数据速率，从而降低功耗并允许设备冷却。
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公开(公告)号：US08031503B1
公开(公告)日：2011-10-04
申请号：US12822073
申请日：2010-06-23
Applicant: Carl Gyllenhammer , Greg Watson , Venkat Gaddam , Varadarajan Srinivasan , Sandeep Khanna , Chetan Deshpande
Inventor： Carl Gyllenhammer , Greg Watson , Venkat Gaddam , Varadarajan Srinivasan , Sandeep Khanna , Chetan Deshpande
IPC: G11C15/00
Abstract: The power consumption of a search engine such as a CAM device is dynamically adjusted to prevent performance degradation and/or damage resulting from overheating. For some embodiments, the CAM device is continuously sampled to generate sampling signals indicating the number of active states and number of compare operations performed during each sampling period. The sampling signals are accumulated to generate an estimated device power profile, which is compared with reference values corresponding to predetermined power levels to generate a dynamic power control signal indicating predicted increases in the device's operating temperature resulting from its power consumption. The dynamic power control signal is then used to selectively reduce the input data rate of the CAM device, thereby reducing power consumption and allowing the device to cool.
Abstract translation: 动态地调整诸如CAM设备的搜索引擎的功耗以防止由过热导致的性能下降和/或损坏。 对于一些实施例，CAM设备被连续采样以产生指示在每个采样周期期间执行的活动状态数量和比较操作数的采样信号。 累积采样信号以产生估计的设备功率曲线，其与与预定功率水平相对应的参考值进行比较，以产生指示由其功耗引起的设备的工作温度的预测增加的动态功率控制信号。 然后使用动态功率控制信号来选择性地降低CAM设备的输入数据速率，从而降低功耗并允许设备冷却。
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34.发明授权Content addressable memory device capable of parallel state information transfers 失效能够并行状态信息传输的内容可寻址存储器件公开(公告)号：US08023300B1
公开(公告)日：2011-09-20
申请号：US12818555
申请日：2010-06-18
Applicant: Varadarajan Srinivasan , Chetan Deshpande , Maheshwaran Srinivasan , Sandeep Khanna , Venkat Rajendher Reddy Gaddam
Inventor： Varadarajan Srinivasan , Chetan Deshpande , Maheshwaran Srinivasan , Sandeep Khanna , Venkat Rajendher Reddy Gaddam
IPC: G11C15/00
Abstract: Present embodiments allow a search engine to quickly save and restore state information to and from an external state memory when switching between multiple data flows by transferring the state information between the search engine and the external state memory in a parallel manner. More specifically, for CAM-based search engines configured according to present embodiments, the CAM array includes state information gating circuits that selectively allow state information stored in the CAM array's match latches to be transposed onto the array's bit lines and then read from the array using the array's sense amplifiers.
Abstract translation: 当前实施例允许搜索引擎通过以并行方式在搜索引擎和外部状态存储器之间传送状态信息来在多个数据流之间切换时，将状态信息快速地保存到外部状态存储器和从外部状态存储器恢复状态信息。 更具体地，对于根据本实施例配置的基于CAM的搜索引擎，CAM阵列包括状态信息门控电路，其选择性地允许存储在CAM阵列的匹配锁存器中的状态信息被转置到阵列的位线上，然后使用 阵列的读出放大器。
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公开(公告)号：US07830691B2
公开(公告)日：2010-11-09
申请号：US12175272
申请日：2008-07-17
Applicant: Varadarajan Srinivasan , Sandeep Khanna , Bindiganavale S. Nataraj
Inventor： Varadarajan Srinivasan , Sandeep Khanna , Bindiganavale S. Nataraj
IPC: G11C15/00
CPC classification number: G11C15/04
Abstract: A low power content addressable memory (CAM) device. The CAM device receives an N-bit comparand value and, in response, activates less than N compare lines within the CAM device to compare each of the N bits of the comparand value with contents of CAM cells coupled to the N compare lines.
Abstract translation: 低功率内容可寻址存储器（CAM）设备。 CAM设备接收N位比较值，并且作为响应，在CAM设备内激活小于N个比较线，以将比较值的N个比特中的每一个与耦合到N个比较线的CAM小区的内容进行比较。
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Patent Agency Ranking
公开(公告)号：US07680855B2
公开(公告)日：2010-03-16
申请号：US11174393
申请日：2005-06-30
Applicant: Adam Hyder , Sandeep Khanna , Joseph Ting
Inventor： Adam Hyder , Sandeep Khanna , Joseph Ting
CPC classification number: G06Q10/10 , Y10S707/947
Abstract: A computer system and method for capture, managing and presenting data obtained from various often unrelated postings via the Internet for examination by a user. This system includes a scraping module having one or more scraping engines operable to scrape information data sets from listings on the corporate sites and web sites, direct feeds, and other sources, wherein the scraping module receives and stores the scraped listing information data sets in a database. The system also has a management platform coordinating all operation of and communication between the sources, system administrators and processing modules. The processing modules in the platform include scraping management module analyzing selected scraped data stored in the database, and a categorization module that examines and categorizes each data set stored in the database into one or more of a predetermined set of categories and returns categorized data sets to the database.
Abstract translation: 一种计算机系统和方法，用于捕获，管理和呈现通过互联网从各种经常不相关的过帐获得的数据，以供用户检查。 该系统包括具有一个或多个刮削引擎的刮削模块，其可操作以从公司站点和网站，直接馈送和其他源上的列表中刮取信息数据集，其中，刮削模块接收并将刮除的列表信息数据集存储在 数据库。 该系统还具有协调源，系统管理员和处理模块之间的所有操作和通信的管理平台。 平台中的处理模块包括分析存储在数据库中的所选择的刮取数据的刮擦管理模块，以及分类模块，其将存储在数据库中的每个数据集合分类为一组或多个预定类别，并将分类数据集返回到 数据库。
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37.发明授权公开(公告)号：US07643353B1
公开(公告)日：2010-01-05
申请号：US12131992
申请日：2008-06-03
Applicant: Maheshwaran Srinivasan , Varadarajan Srinivasan , Sandeep Khanna , Sachin Joshi , Mark Birman
Inventor： Maheshwaran Srinivasan , Varadarajan Srinivasan , Sandeep Khanna , Sachin Joshi , Mark Birman
IPC: G11C7/00
CPC classification number: G11C15/00 , G11C15/04 , G11C15/046
Abstract: A content addressable memory (CAM) device includes a CAM array, a programmable interconnect structure, and a priority encoder. The CAM array includes a plurality of CAM rows, each row including a number of CAM cells for storing a data word and coupled to a match line that indicates a match result for the CAM row. The programmable interconnect structure is coupled to each CAM row and is configured to selectively route the match results from a first CAM row as an input match signal to any number of arbitrarily selected CAM rows at the same time.
Abstract translation: 内容可寻址存储器（CAM）装置包括CAM阵列，可编程互连结构和优先编码器。 CAM阵列包括多个CAM行，每行包括用于存储数据字并耦合到指示CAM行的匹配结果的匹配线的多个CAM单元。 可编程互连结构耦合到每个CAM行，并且被配置为选择性地将来自第一CAM行的匹配结果作为输入匹配信号同时路由到任意数量的任意选择的CAM行。
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公开(公告)号：US07545661B2
公开(公告)日：2009-06-09
申请号：US11876118
申请日：2007-10-22
Applicant: Varadarajan Srinivasan , Sandeep Khanna
Inventor： Varadarajan Srinivasan , Sandeep Khanna
IPC: G11C15/00
Abstract: A content addressable memory (CAM) device having CAM cells arranged in rows and columns. A plurality of pairs of data lines extend along respective columns of the CAM cells, each pair of data lines including at least one data line that is formed by conductive segments disposed in two different conductivity layers of the CAM device.
Abstract translation: 具有以行和列排列的CAM单元的内容可寻址存储器（CAM）装置。 多对数据线沿着CAM单元的各个列延伸，每对数据线包括由设置在CAM器件的两个不同导电层中的导电段形成的至少一条数据线。
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公开(公告)号：US07391200B1
公开(公告)日：2008-06-24
申请号：US11670924
申请日：2007-02-02
Applicant: Sandeep Khanna , Varadarajan Srinivasan
Inventor： Sandeep Khanna , Varadarajan Srinivasan
CPC classification number: H01L27/0921 , H01L23/585 , H01L2924/0002 , H01L2924/3011 , H01L2924/00
Abstract: An integrated circuit device for delivering power to a load includes a P-MOS power transistor, an N-MOS bypass transistor and a gate driver circuit. The P-MOS power transistor is coupled between a supply voltage node and a power output node of the integrated circuit device, and the N-MOS bypass transistor is coupled between the power output node and a reference node of the integrated circuit device. The gate driver circuit responds to a pulse-width-modulated (PWM) control signal by outputting an active-low drive-enable signal to a gate terminal of the P-MOS power transistor and an active-high bypass-enable signal to a gate terminal of the N-MOS bypass transistor during respective, non-overlapping intervals.
Abstract translation: 用于向负载输送功率的集成电路装置包括P-MOS功率晶体管，N-MOS旁路晶体管和栅极驱动电路。 P-MOS功率晶体管耦合在集成电路器件的电源电压节点和功率输出节点之间，并且N-MOS旁路晶体管耦合在功率输出节点和集成电路器件的参考节点之间。 栅极驱动器电路通过向P-MOS功率晶体管的栅极端子输出有效低驱动使能信号和向栅极施加有效高旁路使能信号来响应脉冲宽度调制（PWM）控制信号 N-MOS旁路晶体管的端子。
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公开(公告)号：US20080043507A1
公开(公告)日：2008-02-21
申请号：US11876118
申请日：2007-10-22
Applicant: Varadarajan SRINIVASAN , Sandeep Khanna
Inventor： Varadarajan SRINIVASAN , Sandeep Khanna
IPC: G11C15/00
Abstract: A content addressable memory (CAM) device having CAM cells arranged in rows and columns. A plurality of pairs of data lines extend along respective columns of the CAM cells, each pair of data lines including at least one data line that is formed by conductive segments disposed in two different conductivity layers of the CAM device.
Abstract translation: 具有以行和列排列的CAM单元的内容可寻址存储器（CAM）装置。 多对数据线沿着CAM单元的各个列延伸，每对数据线包括由设置在CAM器件的两个不同导电层中的导电段形成的至少一条数据线。
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