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公开(公告)号：US20090290399A1
公开(公告)日：2009-11-26
申请号：US12124149
申请日：2008-05-21
申请人： SHAHID ALI , Sharad Gupta , Sunil Kumar Misra
发明人： SHAHID ALI , Sharad Gupta , Sunil Kumar Misra
IPC分类号： G11C15/00
摘要： A scheme for ultra-low power content addressable memory based on a ripple search is disclosed. In one embodiment, a system for content addressable memory (CAM), includes a storage unit for storing a portion of content data, and a match module for comparing the portion of the content data with a respective portion of search data received by the match module. The match module includes a first static logic gate associated with a first half of the storage unit storing a sub-portion of the portion of the content data, and a second static logic gate associated with a second half of the storage unit. The first static logic gate forwards a signal for disabling the second static logic gate if the sub-portion of the portion of the content data does not match with a respective sub-portion of the portion of the search data.
摘要翻译： 公开了一种基于纹波搜索的超低功耗内容寻址存储器方案。 在一个实施例中，一种用于内容可寻址存储器（CAM）的系统包括用于存储内容数据的一部分的存储单元和用于将内容数据的一部分与匹配模块接收的搜索数据的相应部分进行比较的匹配模块 。 所述匹配模块包括与所述存储单元的前半部分相关联的第一静态逻辑门，所述第一静态逻辑门存储所述内容数据的所述部分的子部分，以及与所述存储单元的第二半相关联的第二静态逻辑门。 如果内容数据的部分的子部分与搜索数据的该部分的相应子部分不匹配，则第一静态逻辑门转发用于禁用第二静态逻辑门的信号。
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公开(公告)号：US08762804B2
公开(公告)日：2014-06-24
申请号：US13567512
申请日：2012-08-06
CPC分类号： G11C29/021 , G06F11/24 , G11C29/44 , G11C2029/0409
摘要： Potential errors that might result from operating logic and/or memory circuits at an insufficient operating voltage are identified by electrically altering nodes of replica or operational circuits so that the electrically altered nodes are susceptible to errors. The electrically altered nodes in an embodiment are controlled using parametric drivers. A minimized operating voltage can be selected by operating at a marginal operating voltage and detecting a voltage threshold at which errors in the electrically altered nodes are detected, for example.
摘要翻译： 可能由操作逻辑和/或存储器电路在不足的工作电压引起的潜在的错误通过电子改变复制或操作电路的节点来识别，使得电改变的节点容易出错。 使用参数驱动器控制实施例中的电改变的节点。 可以通过在边缘工作电压下操作并检测例如检测电气改变的节点中的错误的电压阈值来选择最小化的工作电压。
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公开(公告)号：US20120163109A1
公开(公告)日：2012-06-28
申请号：US12979390
申请日：2010-12-28
IPC分类号： G11C7/12
摘要： Memory circuit and a tracking circuit thereof. The tracking circuit includes a dummy bit line (DBL). The tracking circuit further includes a first circuit to discharge the dummy bit line in response to a first signal and a wordline activation signal. The wordline activation signal causes activation of a memory cell. The tracking circuit also includes a second circuit which is responsive to discharge of the dummy bit line to enable access to the memory cell.
摘要翻译： 存储电路及其跟踪电路。 跟踪电路包括虚拟位线（DBL）。 跟踪电路还包括：第一电路，用于响应于第一信号和字线激活信号放电虚拟位线。 字线激活信号引起存储器单元的激活。 跟踪电路还包括响应于虚拟位线的放电以使得能够访问存储器单元的第二电路。
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公开(公告)号：US20110018602A1
公开(公告)日：2011-01-27
申请号：US12508572
申请日：2009-07-24
申请人： Shahid ALI , Sharad Gupta , Kundapur Sujan Manohar
发明人： Shahid ALI , Sharad Gupta , Kundapur Sujan Manohar
IPC分类号： H03K3/00
CPC分类号： H03K5/1534 , H03K3/355
摘要： Edge-sensitive Feedback-controlled pulse generator. A circuit includes a pulse generating circuit responsive to a desired transition in an input signal to initiate an output pulse. The circuit also includes a delay circuit responsive to the output pulse to generate a feedback signal. Further, the circuit includes a first latch that renders the pulse generating circuit unresponsive to any change in the input signal until the feedback signal has been generated, a switch responsive to the feedback signal to complete the output pulse, a second latch responsive to a change in the input signal after the feedback signal has been generated to render the pulse generating circuit responsive to a subsequent occurrence of the desired transition in the input signal to initiate the output pulse again, and a third latch responsive to the change in the input signal after the feedback signal has been generated.
摘要翻译： 边缘敏感反馈控制脉冲发生器。 电路包括响应于输入信号中的期望转变的脉冲发生电路以启动输出脉冲。 电路还包括响应于输出脉冲以产生反馈信号的延迟电路。 此外，电路包括第一锁存器，其使得脉冲发生电路对输入信号的任何变化无反应，直到产生反馈信号为止，响应于反馈信号完成输出脉冲的开关，响应于变化的第二锁存器 在产生反馈信号之后的输入信号中，使得脉冲发生电路响应于输入信号中随后出现期望转换以再次启动输出脉冲，以及第三锁存器响应于输入信号之后的变化 已经产生了反馈信号。
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公开(公告)号：US09952148B2
公开(公告)日：2018-04-24
申请号：US12867383
申请日：2009-02-19
CPC分类号： G01N21/47 , G01N21/21 , G01N2021/4792
摘要： In one aspect, the present invention generally provides methods for characterizing mineralization of a material, e.g., a biomaterial, by illuminating the material with radiation and analyzing radiation scattered from the material in response to the illumination. For example, in some embodiments, a material can be illuminated with polarized radiation at a plurality of wavelengths and the elastically scattered radiation corresponding to two or more of those wavelengths can be collected at two polarizations: one parallel and the other perpendicular to the illumination polarization. A differential intensity of the scattered radiation at the two polarizations can be analyzed as a function of wavelength to obtain information regarding the morphology of mineral deposits in the sample. Further, the total scattered radiation can be analyzed to derive information regarding the level of mineralization.
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公开(公告)号：US20140040692A1
公开(公告)日：2014-02-06
申请号：US13567512
申请日：2012-08-06
IPC分类号： G06F11/26
CPC分类号： G11C29/021 , G06F11/24 , G11C29/44 , G11C2029/0409
摘要： Potential errors that might result from operating logic and/or memory circuits at an insufficient operating voltage are identified by electrically altering nodes of replica or operational circuits so that the electrically altered nodes are susceptible to errors. The electrically altered nodes in an embodiment are controlled using parametric drivers. A minimized operating voltage can be selected by operating at a marginal operating voltage and detecting a voltage threshold at which errors in the electrically altered nodes are detected, for example.
摘要翻译： 可能由操作逻辑和/或存储器电路在不足的工作电压引起的潜在的错误通过电子改变复制或操作电路的节点来识别，使得电改变的节点容易出错。 使用参数驱动器控制实施例中的电改变的节点。 可以通过在边缘工作电压下操作并检测例如检测电气改变的节点中的错误的电压阈值来选择最小化的工作电压。
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公开(公告)号：US20110109910A1
公开(公告)日：2011-05-12
申请号：US12867383
申请日：2009-02-19
IPC分类号： G01N21/47
CPC分类号： G01N21/47 , G01N21/21 , G01N2021/4792
摘要： In one aspect, the present invention generally provides methods for characterizing mineralization of a material, e.g., a biomaterial, by illuminating the material with radiation and analyzing radiation scattered from the material in response to the illumination. For example, in some embodiments, a material can be illuminated with polarized radiation at a plurality of wavelengths and the elastically scattered radiation corresponding to two or more of those wavelengths can be collected at two polarizations: one parallel and the other perpendicular to the illumination polarization. A differential intensity of the scattered radiation at the two polarizations can be analyzed as a function of wavelength to obtain information regarding the morphology of mineral deposits in the sample. Further, the total scattered radiation can be analyzed to derive information regarding the level of mineralization.
摘要翻译： 在一个方面，本发明通常提供用于通过用辐射照射材料来表征材料（例如生物材料）的矿化的方法，并且响应于照明分析从材料散射的辐射。 例如，在一些实施例中，可以以多个波长的偏振辐射照射材料，并且对应于这些波长中的两个或更多个的弹性散射辐射可以以两个极化收集：一个平行且另一个垂直于照明偏振 。 可以分析两个极化处的散射辐射的差分强度作为波长的函数，以获得关于样品中矿物沉积物形态的信息。 此外，可以分析总散射辐射以得到关于矿化水平的信息。
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公开(公告)号：US07940541B2
公开(公告)日：2011-05-10
申请号：US12124152
申请日：2008-05-21
申请人： Shahid Ali , Sharad Gupta , Sunil Kumar Misra
发明人： Shahid Ali , Sharad Gupta , Sunil Kumar Misra
IPC分类号： G11C15/00
摘要： A scheme for bit cell designs for ternary content addressable memory for comparing search data with content data is disclosed. In one embodiment, a system for comparing search data with content data stored in a ternary content addressable memory (TCAM) unit, includes a first static logic gate for comparing a first content data with a first search data, and a second static logic gate coupled to the first static logic gate for comparing a second content data with a second search data. The content data comprises the first content data and the second content data and the search data comprises the first search data and the second search data. The first static logic gate forwards a signal for disabling the second static logic gate if the first content data does not match with the first search data.
摘要翻译： 公开了一种用于比较搜索数据与内容数据的三元内容可寻址存储器的位单元设计方案。 在一个实施例中，用于将搜索数据与存储在三元内容可寻址存储器（TCAM）单元中的内容数据进行比较的系统包括用于将第一内容数据与第一搜索数据进行比较的第一静态逻辑门和耦合的第二静态逻辑门 到第一静态逻辑门，用于将第二内容数据与第二搜索数据进行比较。 内容数据包括第一内容数据和第二内容数据，并且搜索数据包括第一搜索数据和第二搜索数据。 如果第一内容数据与第一搜索数据不匹配，则第一静态逻辑门转发用于禁用第二静态逻辑门的信号。
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公开(公告)号：US07894226B2
公开(公告)日：2011-02-22
申请号：US12124149
申请日：2008-05-21
申请人： Shahid Ali , Sharad Gupta , Sunil Kumar Misra
发明人： Shahid Ali , Sharad Gupta , Sunil Kumar Misra
IPC分类号： G11C15/00
摘要： A scheme for ultra-low power content addressable memory based on a ripple search is disclosed. In one embodiment, a system for content addressable memory (CAM), includes a storage unit for storing a portion of content data, and a match module for comparing the portion of the content data with a respective portion of search data received by the match module. The match module includes a first static logic gate associated with a first half of the storage unit storing a sub-portion of the portion of the content data, and a second static logic gate associated with a second half of the storage unit. The first static logic gate forwards a signal for disabling the second static logic gate if the sub-portion of the portion of the content data does not match with a respective sub-portion of the portion of the search data.
摘要翻译： 公开了一种基于纹波搜索的超低功耗内容寻址存储器方案。 在一个实施例中，一种用于内容可寻址存储器（CAM）的系统包括用于存储内容数据的一部分的存储单元和用于将内容数据的一部分与匹配模块接收的搜索数据的相应部分进行比较的匹配模块 。 所述匹配模块包括与所述存储单元的前半部分相关联的第一静态逻辑门，所述第一静态逻辑门存储所述内容数据的所述部分的子部分，以及与所述存储单元的第二半相关联的第二静态逻辑门。 如果内容数据的部分的子部分与搜索数据的该部分的相应子部分不匹配，则第一静态逻辑门转发用于禁用第二静态逻辑门的信号。
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公开(公告)号：US20090290400A1
公开(公告)日：2009-11-26
申请号：US12124152
申请日：2008-05-21
申请人： SHAHID ALI , Sharad Gupta , Sinil Kumar Misra
发明人： SHAHID ALI , Sharad Gupta , Sinil Kumar Misra
IPC分类号： G11C15/00
摘要： A scheme for bit cell designs for ternary content addressable memory for comparing search data with content data is disclosed. In one embodiment, a system for comparing search data with content data stored in a ternary content addressable memory (TCAM) unit, includes a first static logic gate for comparing a first content data with a first search data, and a second static logic gate coupled to the first static logic gate for comparing a second content data with a second search data. The content data comprises the first content data and the second content data and the search data comprises the first search data and the second search data. The first static logic gate forwards a signal for disabling the second static logic gate if the first content data does not match with the first search data.
摘要翻译： 公开了一种用于比较搜索数据与内容数据的三元内容可寻址存储器的位单元设计方案。 在一个实施例中，用于将搜索数据与存储在三元内容可寻址存储器（TCAM）单元中的内容数据进行比较的系统包括用于将第一内容数据与第一搜索数据进行比较的第一静态逻辑门和耦合的第二静态逻辑门 到第一静态逻辑门，用于将第二内容数据与第二搜索数据进行比较。 内容数据包括第一内容数据和第二内容数据，并且搜索数据包括第一搜索数据和第二搜索数据。 如果第一内容数据与第一搜索数据不匹配，则第一静态逻辑门转发用于禁用第二静态逻辑门的信号。
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