公开(公告)号：US20190278604A1

公开(公告)日：2019-09-12

申请号：US16304607

申请日：2017-12-22

Applicant: Dalian University of Technology

Inventor： Jianwei ZHANG ,  Guoqiang WU ,  Xiaoming CHEN ,  Yan YU

IPC: G06F9/30 ,  H04L12/743 ,  G06F16/901

Abstract: Lookup-table hardware search engine belongs to the field of information technology, and is used to improve the traditional TCAM hardware search engine to make the circuit performance higher. The technical points are: including SL decoder, TL-TCAM array, the data stored in the TL-TCAM hardware search engine is obtained by performing lookup table operation in the corresponding TCAM hardware search engine, the decoder is used to decode the search word and send it to the TL-TCAM hardware search engine array, the decoding is to convert a search word SL corresponding to data in a TCAM hardware search engine table into a search word LSL corresponding to TL-TCAM hardware search engine table data, the effect is that TCAM adds a decoder, cooperates with the decoder and by lookup table method converts the TCAM table data to a new circuit unit that can be adapted to the added search line.

公开(公告)号：US20210011724A1

公开(公告)日：2021-01-14

申请号：US17038759

申请日：2020-09-30

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Jianwei ZHANG ,  Guoqiang WU ,  Xiaoming CHEN ,  Yan YU

IPC: G06F9/30 ,  G06F16/901 ,  H04L12/743 ,  G11C15/04

Abstract: A lookup-table type TL-TCAM hardware search engine includes a SL decoder, a TL-TCAM array, and the data stored in the TL-TCAM hardware search engine is obtained by performing lookup table operation in the corresponding TCAM hardware search engine, the SL decoder is used to decode the search word and send it to the TL-TCAM hardware search engine array, and the decoding is to convert a search word SL corresponding to data in a TCAM hardware search engine table into a search word LSL corresponding to TL-TCAM hardware search engine table data, the effect is that TCAM adds a decoder, cooperates with the decoder and by lookup table method converts the TCAM table data to a new circuit unit that can be adapted to the added search line.

公开(公告)号：US20230207009A1

公开(公告)日：2023-06-29

申请号：US17778095

申请日：2021-12-31

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Jianwei ZHANG

IPC: G11C16/08 ,  G11C16/24

CPC classification number: G11C16/08 ,  G11C16/24

Abstract: An enhanced TL-TCAM lookup-table hardware search engine includes a plurality of enhanced TL-TCAM cell circuits. There are m enhanced TL-TCAM cells circuits connected in parallel to form a sub-segment circuit. The word line WL, match line ML and ML_x of each enhanced TL-TCAM cell circuit in the sub-segment circuit are respectively short-connected together, the match line ML is connected to the drain electrode of an N-type transistor N15, ML_x is connected to the gate electrode of the N-type transistor N15, and the source electrode of the N-type transistor N15 is connected to ground, ML_x is connected to the drain electrode of an N-type transistor N14, the source electrode of the N-type transistor N14 is connected to ground, and the gate electrode of the N-type transistor N14 is connected to the signal line OneX_in-Sement_b, a plurality of sub-segment circuits are connected in parallel to form a word circuit.