公开(公告)号：US07283380B1

公开(公告)日：2007-10-16

申请号：US11138512

申请日：2005-05-25

Applicant: Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C15/00

CPC classification number: G11C15/04

Abstract: A content addressable memory (CAM) device with selective error logging. The CAM device includes a CAM array and an error detection circuit coupled to receive a data value from a selected storage location within the CAM array, the error detection circuit being adapted to generate an error indication according to whether the data value includes an error. An error storage circuit is coupled to receive the error indication from the error detection circuit and is adapted to store an error address that corresponds to the selected storage location if the error indication indicates that the data value includes an error and if the error address is not already stored within the error storage circuit.

Abstract translation: 具有选择性错误记录的内容可寻址存储器（CAM）设备。 CAM设备包括CAM阵列和错误检测电路，该电路被耦合以从CAM阵列内的所选择的存储位置接收数据值，该错误检测电路适于根据数据值是否包括错误来产生错误指示。 错误存储电路被耦合以从错误检测电路接收错误指示，并且如果错误指示指示数据值包括错误并且如果错误地址不是，则适于存储对应于所选择的存储位置的错误地址 已经存储在错误存储电路中。

公开(公告)号：US07237156B1

公开(公告)日：2007-06-26

申请号：US09922423

申请日：2001-08-03

Applicant: Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C29/00 ,  G11C15/00 ,  G06F12/00

CPC classification number: G11C15/00

Abstract: A content addressable memory (CAM) device having concurrent compare and error checking capability. The content addressable memory (CAM) device includes circuitry to compare a comparand with a plurality of data words stored within the CAM device in a compare operation, and circuitry to determine, concurrently with the compare operation, whether one of the data words has an error.

Abstract translation: 一种具有并发比较和错误检查功能的内容可寻址存储器（CAM）设备。 内容可寻址存储器（CAM）设备包括在比较操作中将比较与存储在CAM设备中的多个数据字进行比较的电路，以及与比较操作同时确定数据字中的一个是否具有错误的电路 。

公开(公告)号：US20060265266A1

公开(公告)日：2006-11-23

申请号：US11135825

申请日：2005-05-23

Applicant: Changesheng Chen ,  Adam Hyder ,  Sandeep Khanna

Inventor： Changesheng Chen ,  Adam Hyder ,  Sandeep Khanna

IPC: G06F9/46

CPC classification number: G06Q10/1053 ,  G06Q10/10

Abstract: A job searching and matching system and method is disclosed that gathers job seeker information in the form of job seeker parameters from one or more job seekers, gathers job information in the form of job parameters from prospective employers and/or recruiters, correlates the information with past job seeker behavior, parameters and behavior from other job seekers, and job parameters and, in response to a job seeker's query, provides matching job results based on common parameters between the job seeker and jobs along with suggested alternative jobs based on the co-relationships. In addition, the system correlates employer/recruiter behavior information with past employer/recruiter behavior, parameters and information concerning other job seekers, which are candidates to the employer, and resume parameters, and, in response to a Employer's query, provides matching job seeker results based on common parameters between the job seeker resumes and jobs along with suggested alternative job seeker candidates based on the identified co-relationships.

公开(公告)号：US06967855B2

公开(公告)日：2005-11-22

申请号：US10639153

申请日：2003-08-11

Applicant: Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C15/04 ,  G06F17/30 ,  G11C15/00 ,  H04L12/56

CPC classification number: G06F17/30982 ,  G11C15/00

Abstract: A method and apparatus are described for the filtering of a common input string to generate various filtered comparand strings. The filtering of a common input string enables concurrent lookups in different tables to be performed on multiple filtered comparands by different CAM devices (or different blocks within a CAM device), to compare the data in the filtered comparand strings with data stored in its associative memory. By performing multiple lookups in parallel, rather than sequentially, packet throughput in a CAM may be significantly increased.

Abstract translation: 描述了用于过滤公共输入串以产生各种经过滤的比较串的方法和装置。 公共输入字符串的过滤使得可以通过不同的CAM设备（或CAM设备内的不同块）在多个经滤波的比较上对不同表格中的并发查找进行比较，以将滤波后的比较串中的数据与存储在其关联存储器中的数据进行比较 。 通过并行执行多个查找，而不是依次执行CAM中的数据包吞吐量可能会显着增加。

公开(公告)号：US06914795B1

公开(公告)日：2005-07-05

申请号：US10734666

申请日：2003-12-12

Applicant: Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C15/00

CPC classification number: G11C15/00

Abstract: A content addressable memory (CAM) device with selective error logging. The CAM device includes a CAM array and an error detection circuit coupled to receive a data value from a selected storage location within the CAM array, the error detection circuit being adapted to generate an error indication according to whether the data value includes an error. An error storage circuit is couple to receive the error indication from the error detection circuit and is adapted to store an error address that corresponds to the selected storage location if the error indication indicates that the data value includes an error and if the error address is not already stored within the error storage circuit.

Abstract translation: 具有选择性错误记录的内容可寻址存储器（CAM）设备。 CAM设备包括CAM阵列和错误检测电路，该电路被耦合以从CAM阵列内的所选择的存储位置接收数据值，该错误检测电路适于根据数据值是否包括错误来产生错误指示。 错误存储电路耦合以从错误检测电路接收错误指示，并且适于存储对应于所选存储位置的错误地址，如果错误指示指示数据值包括错误，并且如果错误地址不是 已经存储在错误存储电路中。

公开(公告)号：US06744652B2

公开(公告)日：2004-06-01

申请号：US09935997

申请日：2001-08-22

Applicant: Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C1504

CPC classification number: G06F17/30982 ,  G11C15/00

Abstract: A method and apparatus are described for the filtering of a common input string to generate various filtered comparand strings. The filtering of a common input string enables concurrent lookups in different tables to be performed on multiple filtered comparands by different CAM devices (or different blocks within a CAM device), to compare the data in the filtered comparand strings with data stored in its associative memory. By performing multiple lookups in parallel, rather than sequentially, packet throughput in a CAM may be significantly increased.

Abstract translation: 描述了用于过滤公共输入串以产生各种经过滤的比较串的方法和装置。 公共输入字符串的过滤使得可以通过不同的CAM设备（或CAM设备内的不同块）在多个经滤波的比较上对不同表格中的并发查找进行比较，以将滤波的比较串中的数据与存储在其关联存储器中的数据进行比较 。 通过并行执行多个查找，而不是依次执行CAM中的数据包吞吐量可能会显着增加。

公开(公告)号：US06714430B1

公开(公告)日：2004-03-30

申请号：US10143051

申请日：2002-05-10

Applicant: Varadarajan Srinivasan ,  Bindiganavale S. Nataraj ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Bindiganavale S. Nataraj ,  Sandeep Khanna

IPC: G11C1500

CPC classification number: G11C29/846 ,  G11C15/00 ,  G11C29/848

Abstract: A content addressable memory (CAM) having a main array including a plurality of columns of CAM cells, a spare column of CAM cells selectable to functionally replace a defective column of CAM cells in the main array, a steering circuit for steering data corresponding to the defective column to the spare column, and a global mask circuit for masking the defective column during a compare operation.

Abstract translation: 一种内容可寻址存储器（CAM），其具有包括多个CAM单元列的主阵列，可选择功能地替换主阵列中的CAM单元的缺陷列的CAM单元的备用列，用于转向对应于 缺陷列到备用列，以及全局掩模电路，用于在比较操作期间屏蔽缺陷列。

公开(公告)号：US06690595B1

公开(公告)日：2004-02-10

申请号：US10121344

申请日：2002-04-12

Applicant: Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C1500

CPC classification number: G11C15/00

Abstract: A content addressable memory (CAM) device with selective error logging. The CAM device includes a CAM array and an error detection circuit coupled to receive a data value from a selected storage location within the CAM array, the error detection circuit being adapted to generate an error indication according to whether the data value includes an error. An error storage circuit is coupled to receive the error indication from the error detection circuit and is adapted to store an error address that corresponds to the selected storage location if the error indication indicates that the data value includes an error and if the error address is not already stored within the error storage circuit.

Abstract translation: 具有选择性错误记录的内容可寻址存储器（CAM）设备。 CAM设备包括CAM阵列和错误检测电路，该电路被耦合以从CAM阵列内的所选择的存储位置接收数据值，该错误检测电路适于根据数据值是否包括错误来产生错误指示。 错误存储电路被耦合以从错误检测电路接收错误指示，并且如果错误指示指示数据值包括错误并且如果错误地址不是，则适于存储对应于所选择的存储位置的错误地址 已经存储在错误存储电路中。

公开(公告)号：US06567340B1

公开(公告)日：2003-05-20

申请号：US09846513

申请日：2001-04-30

Applicant: Bindiganavale S. Nataraj ,  Varadarajan Srinivasan ,  Sandeep Khanna

Inventor： Bindiganavale S. Nataraj ,  Varadarajan Srinivasan ,  Sandeep Khanna

IPC: G11C800

CPC classification number: G11C8/04 ,  G11C15/04 ,  H03K3/356139 ,  H03K23/56

Abstract: A multi-counter based system having a counter array. Each counter of the array having a memory cell. The system also includes an address decoder coupled to the counter array to select at least one of the memory cells within the counter array and read/write circuitry coupled to the counter array to pass data with the counter array.

Abstract translation: 一种具有计数器阵列的多计数器系统。 阵列的每个计数器具有存储单元。 该系统还包括耦合到计数器阵列的地址解码器，以选择计数器阵列内的至少一个存储单元和耦合到计数器阵列的读/写电路，以便与计数器阵列传递数据。

公开(公告)号：US06445628B1

公开(公告)日：2002-09-03

申请号：US09886235

申请日：2001-06-18

Applicant: Jose Pio Pereira ,  Varadarajan Srinivasan ,  Bindiganavale S. Nataraj ,  Sandeep Khanna

Inventor： Jose Pio Pereira ,  Varadarajan Srinivasan ,  Bindiganavale S. Nataraj ,  Sandeep Khanna

IPC: G11C700

CPC classification number: G11C15/04 ,  G11C15/00 ,  G11C29/785 ,  G11C29/816

Abstract: A CAM device that allows defective rows in one CAM block to be functionally replaced by spare rows from any CAM block in the device. In some embodiments, the CAM device includes a main address decoder, a plurality of CAM blocks, a corresponding plurality of spare address decoders, and a block select circuit. In one embodiment, each CAM block includes a main CAM array having a plurality of rows of CAM cells each coupled to a corresponding word line, and a spare row of CAM cells coupled to a spare word line. Each spare row may be used to functionally replace a defective row in the same CAM block or in any other CAM block by programming the address of the defective row into the corresponding spare address decoder.

Abstract translation: CAM设备允许一个CAM块中的有缺陷的行由设备中任何CAM块的备用行功能替换。 在一些实施例中，CAM设备包括主地址解码器，多个CAM块，对应的多个备用地址解码器和块选择电路。 在一个实施例中，每个CAM块包括具有多个CAM单元的行的主CAM阵列，每个CAM单元耦合到对应的字线，以及耦合到备用字线的一组备用的CAM单元。 每个备用行可以用于通过将缺陷行的地址编程到相应的备用地址解码器中来功能地替换同一CAM块或任何其他CAM块中的有缺陷的行。