发明名称 |
Content addressed memory with comprising hierarchically structured match-lines and with search function based on conversion of decimals into blocks of bits |
摘要 |
The range-specified IP addresses are effectively stored to reduce the number of necessary entries thereby the memory capacity of TCAM is improved. The representative means of the present invention is that: the storage information (entry) and the input information (comparison information or search key) are the common block code such that any bit must be the logical value '1'; Match-lines are hierarchically structured and memory cells are arranged at the intersecting points of a plurality of sub-match lines and a plurality of search lines; Further the sub-match lines are connected to main-match lines through the sub-match detectors, respectively and main-match detectors are arranged on the main-match lines. <IMAGE> |
申请公布号 |
EP1548747(A1) |
申请公布日期 |
2005.06.29 |
申请号 |
EP20040030740 |
申请日期 |
2004.12.23 |
申请人 |
HITACHI, LTD.;ELPIDA MEMORY, INC. |
发明人 |
HANZAWA, SATORU;SAKATA, TAKESHI;KAJIGAYA, KAZUHIKO |
分类号 |
G11C11/401;G11C11/56;G11C15/04 |
主分类号 |
G11C11/401 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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