KR950030479A - 디지탈필터 - Google Patents

디지탈필터 Download PDF

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Publication number
KR950030479A
KR950030479A KR1019940007862A KR19940007862A KR950030479A KR 950030479 A KR950030479 A KR 950030479A KR 1019940007862 A KR1019940007862 A KR 1019940007862A KR 19940007862 A KR19940007862 A KR 19940007862A KR 950030479 A KR950030479 A KR 950030479A
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KR
South Korea
Prior art keywords
data
convolution
digital filter
rom
ram
Prior art date
Application number
KR1019940007862A
Other languages
English (en)
Other versions
KR970001314B1 (ko
Inventor
한동환
Original Assignee
문정환
금성일렉트론 주식회사
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 문정환, 금성일렉트론 주식회사 filed Critical 문정환
Priority to KR1019940007862A priority Critical patent/KR970001314B1/ko
Priority to JP7088412A priority patent/JP2988842B2/ja
Priority to DE19514069A priority patent/DE19514069C2/de
Priority to US08/422,413 priority patent/US5648922A/en
Publication of KR950030479A publication Critical patent/KR950030479A/ko
Application granted granted Critical
Publication of KR970001314B1 publication Critical patent/KR970001314B1/ko

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Classifications

    • 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
    • H03H17/06—Non-recursive filters
    • H03H17/0607—Non-recursive filters comprising a ROM addressed by the input data signals
    • 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
    • H03H17/0238—Measures concerning the arithmetic used
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0657—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is higher than the input sampling frequency, i.e. interpolation

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Complex Calculations (AREA)

Abstract

본 발명은 디지털필터에 관한 것으로, 종래에는 두 개의 필터를 사용하면 두번의 콘벌루션을 하기 위해 소요되는 램, 롬 및 곱셈기 등으로 인하여 면적이 두배나 되고, 면적을 줄이기 위해 곱셈기에 피드백 부분을 삽입하여 사용하게 되면 제어가 복잡하게 됨과 아울러 각 부의 동작시 시간공유(time sharing)가 필요하여 속도가 떨어지게 된다. 따라서 본 발명은 두번을 행해야 하는 콘벌루션을 하나의 그룹으로 처리하여 한번의 콘벌루션으로 두번을 행한 콘벌루션과 같은 특성을 갖도록 한다.

Description

디지털필터
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명의 디지털필터 구성도, 제3도는 본 발명을 설명하기 위한 디지털필터의 구성 설명도.

Claims (6)

  1. 필터링에 적당하도록 입력데이타를 버퍼링하여 전달하는 입력버터와, 상기 입력버포로부터 출력되는 데이타에 따라 콘벌루션(convolution)을 행한 데이타를 저장하는 램과, 여러단 필터의 계수에 대해 연산한 계수 그룹을 저장하는 롬과, 입력되는 제어신호에 따라 상기 롬에 어드레스를 지정하여 주는 어드레싱부와, 상기 램과 롬으로부터 출력되는 각각의 데이타를 곱해서 출력토록 하는 곱셈 및 누산기와, 상기 각 부의 동작을 제어하는 제어부로 구성됨을 특징으로 하는 디지털필터.
  2. 제1항에 있어서, 램은 선택신호(SEL)에 따라 입력되는 데이타를 선택하여 출력하여 멀티플렉서와, 상기 멀티플렉서를 통해 선택된 데이타를 순차적으로 시프트시켜 출력하는 시프트부와, 피드백 인에이블신호(FB-EN)에 따라 상기 시프트부로부터 출력되는 데이타를 입력받아 버퍼링한 후 상기 멀티플렉서의 한 입력단으로 전달하는 버퍼링부로 구성됨을 특징으로 하는 디지털필터.
  3. 제2항에 있어서, 램은 콘벌루션시 피드백 인에이블신호(FB-EN)를 인에이블하여 콘벌루션이 완료될 때까지 데이타를 피드백하도록 함을 특징으로 하는 디지털필터.
  4. 제1항에 있어서, 롬에 저장된 계수그룹은 여러단의 필터 계수에 대해 보간을 위해 삽입된 제로데이타와 보간필터의 제로계수를 미리 연산하여 얻은 계수임을 특징으로 하는 디지털필터.
  5. 제1항에 있어서, 계수그룹을 저장한 롬은 각 계수를 재배치하여 두번의 곱셈을 대신할 수 있도록 함을 특징으로 하는 디지탈필터.
  6. 제1항에 있어서, 콘벌루션을 하나의 계수그룹으로 처리하여 한번의 콘벌루션으로 두번을 행한 콘벌루션과 같은 특성을 얻도록함을 특징으로 하는 디지탈필터.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940007862A 1994-04-14 1994-04-14 디지탈 필터 KR970001314B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019940007862A KR970001314B1 (ko) 1994-04-14 1994-04-14 디지탈 필터
JP7088412A JP2988842B2 (ja) 1994-04-14 1995-04-13 ディジタルフィルタ
DE19514069A DE19514069C2 (de) 1994-04-14 1995-04-13 Digitalfilter
US08/422,413 US5648922A (en) 1994-04-14 1995-04-14 Digital filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940007862A KR970001314B1 (ko) 1994-04-14 1994-04-14 디지탈 필터

Publications (2)

Publication Number Publication Date
KR950030479A true KR950030479A (ko) 1995-11-24
KR970001314B1 KR970001314B1 (ko) 1997-02-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940007862A KR970001314B1 (ko) 1994-04-14 1994-04-14 디지탈 필터

Country Status (4)

Country Link
US (1) US5648922A (ko)
JP (1) JP2988842B2 (ko)
KR (1) KR970001314B1 (ko)
DE (1) DE19514069C2 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957565B1 (ko) * 2007-12-28 2010-05-11 주식회사 효성 전력 계통 보호 계전기의 알고리즘 연산 방법

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US5784419A (en) * 1996-10-04 1998-07-21 Motorola, Inc. Efficient digital filter and method using coefficient precombing
US6023717A (en) * 1996-10-30 2000-02-08 Qualcomm Incorporated Method and apparatus for polyphase digital filtering in a mobile telephone
US6295545B1 (en) * 1998-11-12 2001-09-25 Pc-Tel, Inc. Reduction of execution times for convolution operations
US7738613B1 (en) 2003-03-21 2010-06-15 D2Audio Corporation Streaming multi-channel audio as packetized data or parallel data with a separate input frame sync
US7474722B1 (en) * 2003-03-21 2009-01-06 D2Audio Corporation Systems and methods for sample rate conversion using multiple rate estimate counters
US7908306B1 (en) * 2003-03-21 2011-03-15 D2Audio Corp SRC with multiple sets of filter coefficients in memory and a high order coefficient interpolator
ATE376281T1 (de) * 2003-04-29 2007-11-15 Nxp Bv Digitale filteranordnung
US7929718B1 (en) 2003-05-12 2011-04-19 D2Audio Corporation Systems and methods for switching and mixing signals in a multi-channel amplifier
JP4473660B2 (ja) * 2004-07-07 2010-06-02 株式会社アドバンテスト 間引きフィルタ及び試験装置
JP4296518B2 (ja) * 2006-12-07 2009-07-15 ソニー株式会社 情報処理装置および情報処理方法
JP5587121B2 (ja) * 2010-09-30 2014-09-10 スナップトラック・インコーポレーテッド 整合フィルタ回路及び整合フィルタリングを実行するための方法
CN102545831A (zh) * 2012-01-18 2012-07-04 大唐移动通信设备有限公司 一种多通道多相滤波器中的缓存处理装置

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US4727505A (en) * 1984-03-29 1988-02-23 Kabushiki Kaisha Toshiba Convolution arithmetic circuit for digital signal processing
JP2675010B2 (ja) * 1986-08-29 1997-11-12 株式会社日立製作所 情報処理装置
JPS6370608A (ja) * 1986-09-12 1988-03-30 Toshiba Corp デジタルフイルタ回路
JPH0612862B2 (ja) * 1986-09-29 1994-02-16 ヤマハ株式会社 デイジタルフイルタ
EP0284175B1 (en) * 1987-03-23 1995-03-22 Matsushita Electric Industrial Co., Ltd. Calculation of filter factors for digital filter
JP2825232B2 (ja) * 1988-03-31 1998-11-18 株式会社東芝 巡回形ディジタルフィルタ
JPH0311899A (ja) * 1989-06-08 1991-01-21 Toshiba Corp デジタル信号処理装置
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JPH04175006A (ja) * 1990-11-07 1992-06-23 Mitsubishi Electric Corp メモリ装置及びディジタル信号処理装置
US5515402A (en) * 1992-08-14 1996-05-07 Harris Corporation Quadrature filter with real conversion
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957565B1 (ko) * 2007-12-28 2010-05-11 주식회사 효성 전력 계통 보호 계전기의 알고리즘 연산 방법

Also Published As

Publication number Publication date
DE19514069C2 (de) 1997-04-24
DE19514069A1 (de) 1995-10-19
KR970001314B1 (ko) 1997-02-05
US5648922A (en) 1997-07-15
JP2988842B2 (ja) 1999-12-13
JPH07297679A (ja) 1995-11-10

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