BR9804969A - Artigo de registro multiporta para uso de coeficientes em filtros. - Google Patents

Artigo de registro multiporta para uso de coeficientes em filtros.

Info

Publication number
BR9804969A
BR9804969A BR9804969-0A BR9804969A BR9804969A BR 9804969 A BR9804969 A BR 9804969A BR 9804969 A BR9804969 A BR 9804969A BR 9804969 A BR9804969 A BR 9804969A
Authority
BR
Brazil
Prior art keywords
multiport
coefficients
incorporate
log file
log
Prior art date
Application number
BR9804969-0A
Other languages
English (en)
Inventor
Christopher John Nicol
Patrik Larsson
Original Assignee
Lucent Technologies Inc
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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR9804969A publication Critical patent/BR9804969A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0227—Measures concerning the coefficients
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks
    • H03H17/0269—Filter banks comprising recursive filters

Landscapes

  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

ARTIGO DE REGISTRO MULTIPORTA PARA USO DE COEFICIENTES EM FILTROS. Arquivos de registro multiporta para uso no armazenamento de coeficientes em filtros FIR adaptativos incorporam capacidade computacional, por exemplo, a capacidade para realizar computação em valores de coeficientes ou seus derivados, ou para controlar as operações realizadas naqueles. Por exemplo, um arquivo de registro multiporta pode incorporar uma unidade de detecção de excesso/ zero e/ou saturação. O arquivo de registro multiporta pode também incorporar um codificador especial para acelerar o processo de multiplicação, por exemplo, o codificador chamado "Booth". Do mesmo modo, o arquivo de registro multiporta pode incorporar um conversor para alterar a representação dos coeficientes, por exemplo, um conversor de complemento de dois para sinal-magnitude. Toda a computação realizada no arquivo de registro multiporta é realizada fora da trajetória crítica da filtragem ou da atualização dos coeficientes. Usando tais arquivos de registro multiporta, podem ser construídos filtros FIR adaptativos que operam mais rápido e com menor consumo de potência.
BR9804969-0A 1997-12-23 1998-11-27 Artigo de registro multiporta para uso de coeficientes em filtros. BR9804969A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/996,868 US6542539B1 (en) 1997-12-23 1997-12-23 Multiported register file for coefficient use in filters

Publications (1)

Publication Number Publication Date
BR9804969A true BR9804969A (pt) 1999-11-23

Family

ID=25543385

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9804969-0A BR9804969A (pt) 1997-12-23 1998-11-27 Artigo de registro multiporta para uso de coeficientes em filtros.

Country Status (8)

Country Link
US (1) US6542539B1 (pt)
EP (1) EP0928065B1 (pt)
JP (1) JP3540179B2 (pt)
KR (1) KR100617388B1 (pt)
CN (1) CN1235414A (pt)
BR (1) BR9804969A (pt)
CA (1) CA2254545A1 (pt)
DE (1) DE69800593T2 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6542539B1 (en) 1997-12-23 2003-04-01 Agere Systems Guardian Corp. Multiported register file for coefficient use in filters
WO2010025074A1 (en) * 2008-08-28 2010-03-04 Sandbridge Technologies, Inc. Latch-based implementation of a register file for a multi-threaded processor
GB2580160B (en) 2018-12-21 2021-01-06 Graphcore Ltd Hardware module for converting numbers
US11301542B2 (en) * 2019-05-15 2022-04-12 Nxp B.V. Methods and apparatuses involving fast fourier transforms processing of data in a signed magnitude form

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723911A (en) 1971-09-13 1973-03-27 Codex Corp Training adaptive linear filters
JPH0795671B2 (ja) 1986-06-03 1995-10-11 ソニー株式会社 デイジタルフイルタ
US5313551A (en) 1988-12-28 1994-05-17 North American Philips Corporation Multiport memory bypass under software control
JPH02222317A (ja) * 1989-02-23 1990-09-05 Lsi Rojitsuku Kk デジタルフィルタ
US4995031A (en) * 1989-06-19 1991-02-19 Northern Telecom Limited Equalizer for ISDN-U interface
US5477534A (en) * 1993-07-30 1995-12-19 Kyocera Corporation Acoustic echo canceller
US5930231A (en) * 1995-06-30 1999-07-27 Scientific-Atlanta, Inc. Block spectrum receiver for a broadband communications system
US5721696A (en) * 1995-08-28 1998-02-24 Motorola Inc. Method and system for performing an FIR filtering operation
US5657291A (en) 1996-04-30 1997-08-12 Sun Microsystems, Inc. Multiport register file memory cell configuration for read operation
US5777914A (en) * 1996-08-29 1998-07-07 Lucent Technologies Inc. Technique for reducing power consumption in digital filters
US6542539B1 (en) 1997-12-23 2003-04-01 Agere Systems Guardian Corp. Multiported register file for coefficient use in filters

Also Published As

Publication number Publication date
JPH11266142A (ja) 1999-09-28
EP0928065A3 (en) 1999-07-21
KR19990063481A (ko) 1999-07-26
KR100617388B1 (ko) 2007-04-25
DE69800593D1 (de) 2001-04-19
CA2254545A1 (en) 1999-06-23
CN1235414A (zh) 1999-11-17
EP0928065A2 (en) 1999-07-07
US6542539B1 (en) 2003-04-01
DE69800593T2 (de) 2001-10-04
EP0928065B1 (en) 2001-03-14
JP3540179B2 (ja) 2004-07-07

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law