WO2005038591A3 - Memory and power efficient mechanism for fast table lookup - Google Patents

Memory and power efficient mechanism for fast table lookup Download PDF

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Publication number
WO2005038591A3
WO2005038591A3 PCT/US2004/033802 US2004033802W WO2005038591A3 WO 2005038591 A3 WO2005038591 A3 WO 2005038591A3 US 2004033802 W US2004033802 W US 2004033802W WO 2005038591 A3 WO2005038591 A3 WO 2005038591A3
Authority
WO
WIPO (PCT)
Prior art keywords
memory
table lookup
power efficient
efficient mechanism
fast table
Prior art date
Application number
PCT/US2004/033802
Other languages
French (fr)
Other versions
WO2005038591A2 (en
Inventor
Madian Somasundaram
Original Assignee
Spans Logic Inc
Madian Somasundaram
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Spans Logic Inc, Madian Somasundaram filed Critical Spans Logic Inc
Priority to DE602004010922T priority Critical patent/DE602004010922T2/en
Priority to CA2540213A priority patent/CA2540213C/en
Priority to EP04809953A priority patent/EP1671217B1/en
Priority to JP2006534472A priority patent/JP2007508653A/en
Publication of WO2005038591A2 publication Critical patent/WO2005038591A2/en
Publication of WO2005038591A3 publication Critical patent/WO2005038591A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C15/00—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C15/00—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores
    • G11C15/04—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores using semiconductor elements

Abstract

A method of implementing classification CAM functionality using primarily RAM cells is disclosed. The method offers significantly more table entries in a given area, or significantly less area for a given table size than conventional ternary CAMs. The method is much more power-efficient, cheaper, and offers a greater range of features than conventional CAMs.
PCT/US2004/033802 2003-10-11 2004-10-12 Memory and power efficient mechanism for fast table lookup WO2005038591A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE602004010922T DE602004010922T2 (en) 2003-10-11 2004-10-12 STORAGE AND STROMEFFICIENT MECHANISM FOR FAST TABLE HUNTING
CA2540213A CA2540213C (en) 2003-10-11 2004-10-12 Memory and power efficient mechanism for fast table lookup
EP04809953A EP1671217B1 (en) 2003-10-11 2004-10-12 Memory and power efficient mechanism for fast table lookup
JP2006534472A JP2007508653A (en) 2003-10-11 2004-10-12 High-speed table lookup memory and low power consumption mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51076103P 2003-10-11 2003-10-11
US60/510,761 2003-10-11

Publications (2)

Publication Number Publication Date
WO2005038591A2 WO2005038591A2 (en) 2005-04-28
WO2005038591A3 true WO2005038591A3 (en) 2006-05-18

Family

ID=34465145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/033802 WO2005038591A2 (en) 2003-10-11 2004-10-12 Memory and power efficient mechanism for fast table lookup

Country Status (8)

Country Link
US (6) US7162572B2 (en)
EP (1) EP1671217B1 (en)
JP (1) JP2007508653A (en)
CN (1) CN100440169C (en)
AT (1) ATE382166T1 (en)
CA (1) CA2540213C (en)
DE (1) DE602004010922T2 (en)
WO (1) WO2005038591A2 (en)

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Also Published As

Publication number Publication date
US7296113B2 (en) 2007-11-13
US20060253647A1 (en) 2006-11-09
EP1671217B1 (en) 2007-12-26
CN100440169C (en) 2008-12-03
US20060253646A1 (en) 2006-11-09
US7296114B2 (en) 2007-11-13
US20060253648A1 (en) 2006-11-09
ATE382166T1 (en) 2008-01-15
EP1671217A2 (en) 2006-06-21
JP2007508653A (en) 2007-04-05
CN1867901A (en) 2006-11-22
US20060259682A1 (en) 2006-11-16
DE602004010922D1 (en) 2008-02-07
US7162572B2 (en) 2007-01-09
CA2540213A1 (en) 2005-04-28
US7406561B2 (en) 2008-07-29
US20070285290A1 (en) 2007-12-13
US7321952B2 (en) 2008-01-22
US20050138279A1 (en) 2005-06-23
CA2540213C (en) 2013-02-12
EP1671217A4 (en) 2006-11-02
DE602004010922T2 (en) 2008-12-18
WO2005038591A2 (en) 2005-04-28
US7292162B2 (en) 2007-11-06

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