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1. 再颁专利

USRE43552E1 Block programmable priority encoder in a cam 有权
标题翻译：在凸轮中嵌入可编程优先编码器
公开(公告)号：USRE43552E1
公开(公告)日：2012-07-24
申请号：US12709198
申请日：2010-02-19
申请人： Alan Roth , Sean Lord , Robert McKenzie , Dieter Haerle , Steven Smith
发明人： Alan Roth , Sean Lord , Robert McKenzie , Dieter Haerle , Steven Smith
IPC分类号： G06F12/00
CPC分类号： G11C15/00
摘要： A priority encoder (PE) for a CAM, comprising a plurality of PE blocks, each receiving a plurality of match results corresponding to data entries in a corresponding data array block and, for determining an address of a highest priority data entry based on a physical location in the data array block during a CAM search-and-compare operation a register for storing a user defined priority value assigned to each PE block and means for evaluating priority values and the address determined by the plurality of PE blocks to select a PE block having the highest priority data entry.
摘要翻译：一种用于CAM的优先编码器（PE），包括多个PE块，每个PE块都接收与对应的数据阵列块中的数据条目相对应的多个匹配结果，并且用于基于物理上的数据来确定最高优先级数据条目的地址在CAM搜索与比较操作期间在数据阵列块中的位置存储用于分配给每个PE块的用户定义的优先级值的寄存器以及用于评估优先级值的装置和由多个PE块确定的地址以选择PE块具有最高优先级的数据输入。

2. 发明授权

US07188211B2 Block programmable priority encoder in a CAM 有权
标题翻译：在CAM中嵌入可编程优先编码器
公开(公告)号：US07188211B2
公开(公告)日：2007-03-06
申请号：US10724576
申请日：2003-12-01
申请人： Alan Roth , Sean Lord , Robert McKenzie , Dieter Haerle , Steven Smith
发明人： Alan Roth , Sean Lord , Robert McKenzie , Dieter Haerle , Steven Smith
IPC分类号： G06F12/00 , G06F9/00
CPC分类号： G11C15/00
摘要： A priority encoder (PE) for a CAM, comprising a plurality of PE blocks, each receiving a plurality of match results corresponding to data entries in a corresponding data array block and, for determining an address of a highest priority data entry based on a physical location in the data array block during a CAM search-and-compare operation a register for storing a user defined priority value assigned to each PE block and means for evaluating priority values and the address determined by the plurality of PE blocks to select a PE block having the highest priority data entry.
摘要翻译：一种用于CAM的优先编码器（PE），包括多个PE块，每个PE块都接收与对应的数据阵列块中的数据条目相对应的多个匹配结果，并且用于基于物理上的数据来确定最高优先级数据条目的地址在CAM搜索与比较操作期间在数据阵列块中的位置存储用于分配给每个PE块的用户定义的优先级值的寄存器以及用于评估优先级值的装置和由多个PE块确定的地址以选择PE块具有最高优先级的数据输入。

3. 发明申请

US20050001744A1 Block programmable priority encoder in a CAM 有权
标题翻译：在CAM中嵌入可编程优先编码器
公开(公告)号：US20050001744A1
公开(公告)日：2005-01-06
申请号：US10724576
申请日：2003-12-01
申请人： Alan Roth , Sean Lord , Robert McKenzie , Dieter Haerle , Steve Smith
发明人： Alan Roth , Sean Lord , Robert McKenzie , Dieter Haerle , Steve Smith
IPC分类号： G11C15/00 , H03M7/00
CPC分类号： G11C15/00
摘要： A priority encoder (PE) for a CAM, comprising a plurality of PE blocks, each receiving a plurality of match results corresponding to data entries in a corresponding data array block and, for determining an address of a highest priority data entry based on a physical location in the data array block during a CAM search-and-compare operation a register for storing a user defined priority value assigned to each PE block and means for evaluating priority values and the address determined by the plurality of PE blocks to select a PE block having the highest priority data entry.
摘要翻译：一种用于CAM的优先编码器（PE），包括多个PE块，每个PE块都接收与对应的数据阵列块中的数据条目相对应的多个匹配结果，并且用于基于物理上的数据来确定最高优先级数据条目的地址在CAM搜索与比较操作期间在数据阵列块中的位置存储用于分配给每个PE块的用户定义的优先级值的寄存器以及用于评估优先级值的装置和由多个PE块确定的地址以选择PE块具有最高优先级的数据输入。

4. 发明申请

US20060239054A1 Content addressable memory architecture 审中-公开
公开(公告)号：US20060239054A1
公开(公告)日：2006-10-26
申请号：US11359877
申请日：2006-02-21
申请人： Robert McKenzie , Dieter Haerle , Sean Lord
发明人： Robert McKenzie , Dieter Haerle , Sean Lord
IPC分类号： G11C15/00
CPC分类号： G11C15/043 , G11C15/00 , G11C15/04
摘要： A Content Addressable Memory array includes a plurality of coupled sub-blocks arranged in rows and columns. Search data received by a first sub-block in a first column of the CAM is propagated to each sub-block in the row to the last sub-block in the last column of the CAM. The search result for the CAM is selected based on the propagated search results for each row of sub-blocks and output on a side of the array opposite from the side receiving the search data.

5. 发明申请

US20080025059A1 Content addressable memory architecture 有权
标题翻译：内容可寻址内存架构
公开(公告)号：US20080025059A1
公开(公告)日：2008-01-31
申请号：US11787667
申请日：2007-04-17
申请人： Robert McKenzie , Dieter Haerle , Sean Lord
发明人： Robert McKenzie , Dieter Haerle , Sean Lord
IPC分类号： G11C15/00
CPC分类号： G11C15/043 , G11C15/00 , G11C15/04
摘要： A Content Addressable Memory array includes a plurality of coupled sub-blocks arranged in rows and columns. Search data received by a first sub-block in a first column of the CAM is propagated to each sub-block in the row to the last sub-block in the last column of the CAM. The search result for the CAM is selected based on the propagated search results for each row of sub-blocks and output on a side of the array opposite from the side receiving the search data.
摘要翻译：内容可寻址存储器阵列包括以行和列排列的多个耦合子块。由CAM的第一列中的第一子块接收的搜索数据被传播到该CAM的最后一列中的行中的每个子块到最后一个子块。基于每行子块的传播搜索结果选择CAM的搜索结果，并在与接收搜索数据的一侧相反的阵列的一侧上输出。

6. 发明申请

US20050068839A1 Content addressable memory architecture 有权
标题翻译：内容可寻址内存架构
公开(公告)号：US20050068839A1
公开(公告)日：2005-03-31
申请号：US10912768
申请日：2004-08-05
申请人： Robert McKenzie , Dieter Haerle , Sean Lord
发明人： Robert McKenzie , Dieter Haerle , Sean Lord
IPC分类号： G11C15/00
CPC分类号： G11C15/043 , G11C15/00 , G11C15/04
摘要： A Content Addressable Memory array includes a plurality of coupled sub-blocks arranged in rows and columns. Search data received by a first sub-block in a first column of the CAM is propagated to each sub-block in the row to the last sub-block in the last column of the CAM. The search result for the CAM is selected based on the propagated search results for each row of sub-blocks and output on a side of the array opposite from the side receiving the search data.
摘要翻译：内容可寻址存储器阵列包括以行和列排列的多个耦合子块。由CAM的第一列中的第一子块接收的搜索数据被传播到该CAM的最后一列中的行中的每个子块到最后一个子块。基于每行子块的传播搜索结果选择CAM的搜索结果，并且在与接收搜索数据的一侧相反的阵列的一侧上输出。

7. 发明授权

US07478193B2 Method and apparatus for interconnecting content addressable memory devices 失效
标题翻译：用于互连内容可寻址存储器件的方法和装置
公开(公告)号：US07478193B2
公开(公告)日：2009-01-13
申请号：US11419374
申请日：2006-05-19
申请人： Oswald Becca , Alan Roth , Robert McKenzie
发明人： Oswald Becca , Alan Roth , Robert McKenzie
IPC分类号： G06F12/00
CPC分类号： G06F17/30982 , G06F13/18 , G06F13/4247 , G11C15/00
摘要： A CAM system comprising a plurality of CAM devices connected in a serial cascade arrangement, the CAMs in the cascade being connected to an adjacent CAM by a respective forwarding bus, with at most a first CAM in the cascade being connected to a receive data signals from a host controller and at most a last CAM devices being coupled to forward results back to the host controller; and a send signal generation means for supplying a SEND signal to the last CAM; the SEND signal for coordinating transfer of the search result from the last CAM to the host controller, the serial cascade arrangement minimizing the number of CAMs being connected to a common forwarding bus.
摘要翻译：一种CAM系统，包括以串联级联装置连接的多个CAM装置，级联中的CAM通过相应的转发总线连接到相邻的CAM，最多具有级联中的第一CAM连接到来自主机控制器和至多最后的CAM设备被耦合以将结果转发回主机控制器; 以及发送信号发生装置，用于向最后一个CAM提供SEND信号; 用于协调将搜索结果从最后一个CAM传送到主机控制器的SEND信号，串行级联布置使得连接到公共转发总线的CAM的数量最小化。

8. 发明授权

US07136961B2 Method and apparatus for wide word deletion in content addressable memories 有权
公开(公告)号：US07136961B2
公开(公告)日：2006-11-14
申请号：US10357270
申请日：2003-01-31
申请人： Alan Roth , Robert McKenzie , Oswald Becca
发明人： Alan Roth , Robert McKenzie , Oswald Becca
IPC分类号： G06F12/00
CPC分类号： G11C15/00 , G11C15/04
摘要： A system and method for searching and deleting segmented wide word entries in a CAM array is disclosed. A normal CAM search operation is executed to find the first word segment of a wide word. Once found, a search and delete operation is executed to find all successive word segments of the wide word, with the last word segment being marked as a deleted word segment, along a first CAM array direction. Once the last word segment is deleted, the wide word is considered to have been deleted because subsequent searches for the wide word will not find its last word segment. A purge operation is then executed along the opposite CAM array direction to delete all the word segments of the deleted wide word. Match processing circuits in each row of the CAM array can pass search results to an adjacent row above or below it to ensure that only word segments belonging to the wide word are found in the search and delete operation and deleted in the purge operation.

9. 发明授权

US07062601B2 Method and apparatus for interconnecting content addressable memory devices 有权
标题翻译：用于互连内容可寻址存储器件的方法和装置
公开(公告)号：US07062601B2
公开(公告)日：2006-06-13
申请号：US10430378
申请日：2003-05-07
申请人： Oswald Becca , Alan Roth , Robert McKenzie
发明人： Oswald Becca , Alan Roth , Robert McKenzie
IPC分类号： G06F12/00
CPC分类号： G06F17/30982 , G06F13/18 , G06F13/4247 , G11C15/00
摘要： A cam system comprising a plurality of CAM devices connected in a serial cascade arrangement, the CAMS in the cascade being connected to an adjacent CAM by a respective forwarding bus, with at most a first CAM in the cascade being connected to a receive data signals from a host controller and at most a last CAM devices being coupled to forward results back to the host controller; and a send signal generation means for supplying a SEND signal to the last CAM; the SEND signal for co-ordinating transfer of the search result from the last CAM to the host controller, the serial cascade arrangement minimising the number of CAMs being connected to a common forwarding bus.
摘要翻译：一种凸轮系统，包括以串联级联装置连接的多个CAM装置，级联中的CAMS通过相应的转发总线连接到相邻的CAM，其中级联中的至多第一CAM连接到来自主机控制器和至多最后的CAM设备被耦合以将结果转发回主机控制器; 以及发送信号发生装置，用于向最后一个CAM提供SEND信号; 用于协调将搜索结果从最后一个CAM传送到主机控制器的SEND信号，串行级联布置使得连接到公共转发总线的CAM的数量最小化。

10. 发明授权

US07558909B2 Method and apparatus for wide word deletion in content addressable memories 有权
标题翻译：内容可寻址存储器中用于宽字删除的方法和装置
公开(公告)号：US07558909B2
公开(公告)日：2009-07-07
申请号：US11548766
申请日：2006-10-12
申请人： Alan Roth , Robert McKenzie , Oswald Becca
发明人： Alan Roth , Robert McKenzie , Oswald Becca
IPC分类号： G06F12/00
CPC分类号： G11C15/00 , G11C15/04
摘要： A system and method for searching and deleting segmented wide word entries in a CAM array is disclosed. A normal CAM search operation is executed to find the first word segment of a wide word. Once found, a search and delete operation is executed to find all successive word segments of the wide word, with the last word segment being marked as a deleted word segment, along a first CAM array direction. Once the last word segment is deleted, the wide word is considered to have been deleted because subsequent searches for the wide word will not find its last word segment. A purge operation is then executed along the opposite CAM array direction to delete all the word segments of the deleted wide word. Match processing circuits in each row of the CAM array can pass search results to an adjacent row above or below it to ensure that only word segments belonging to the wide word are found in the search and delete operation and deleted in the purge operation.
摘要翻译：公开了一种用于搜索和删除CAM阵列中的分段宽字条目的系统和方法。执行正常的CAM搜索操作以找到宽字的第一字段。一旦找到，执行搜索和删除操作，以沿着第一CAM阵列方向找到宽字的所有连续字段，其中最后一个字段被标记为删除的字段。一旦最后一个字段被删除，宽字被认为已被删除，因为后续搜索宽字不会找到其最后一个字段。然后沿着相反的CAM阵列方向执行清除操作，以删除所删除的宽字的所有字段。 CAM阵列的每一行中的匹配处理电路可以将搜索结果传递到其上方或下方的相邻行，以确保在搜索和删除操作中仅找到属于宽字的字段，并在清除操作中删除。

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