KR850005747A - 보간용 시간이산 필터장치 - Google Patents

보간용 시간이산 필터장치 Download PDF

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Publication number
KR850005747A
KR850005747A KR1019850000052A KR850000052A KR850005747A KR 850005747 A KR850005747 A KR 850005747A KR 1019850000052 A KR1019850000052 A KR 1019850000052A KR 850000052 A KR850000052 A KR 850000052A KR 850005747 A KR850005747 A KR 850005747A
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South Korea
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sub
filter
clock pulse
input
time
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KR1019850000052A
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English (en)
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KR930001296B1 (ko
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아르트 페르 디난트 스티카포르트 에두
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아이.엠.레트너
엔. 브이 .필립스 글로아이람펜파브 리켄
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • 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
    • H03H17/0642—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 arbitrary or irrational

Abstract

내용 없음

Description

보간용 시간이산 필터장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 제1에서 도시된 필터장치에서 사용된 ″아나로그″필터의 유한 임펄스 응답을 도시.
제3도는 제1도의 필터장치를 설명하기 위한 시간선도.
제4도는 본 발명에 따른 보간용 시간이산 장치의 실시예를 도시.

Claims (5)

  1. 입력 샘플링 주파수 fi가 연관된 일련의 입력샘플 x(q),q=…,-2,-1,0,1,2,3,…로 형성된 시간이산 입력신호를 출력 샘플링 주파수 fu가 연관되고 입력 샘플링 주파수 fi보다 높은 R배인 일련의 출력 샘플 y(n),n=…,-2,-1,0,1,2,3,…으로 형성된 시간이산 출력신호로 변환하는 무리수 보간인수 R을 갖는 보간용 시간이산 필터장치에 있어서, a) 상기 입력 샘플링 주파수 fi에서 나타나는 입력클럭펄스 ki(q)를 발생하는 제1수단과, b) 상기 출력 샘플링 주파수 fu에서 나타나는 출력클럭펄스 ku(q)를 발생하는 제2수단과, c) w필터계수군을 발생하는 필터계수발생기와, 발생기는 c1) 입력클럭펄스 및 출력클럭펄스가 인가되고 각 입력클럭펄스 ki(q)에 응답하여 상기 입력클럭펄스 ki(q)와 바로 차후 또는 바로 계속되는 출력클럭펄스 사이에 위치된 시간간격 Td(q)과 두 연속 출력클럭펄스 사이의 시간간격 Tu=1/fu간의 관계에 비례하는 크기를 갖는 편차성분 d(q)을 공급하는 수단과, c2) 편차성분 d(q)에 응답하여w필터 계수군을 발생하는 수단을 구비하고 있으며, 수w를 갖는 필터계수는 a(d(q),w)와 동일하고 표현식
    a(d(q),w)=h(d(q)Tu+wTu)
    w=0,1,2,……w-1
    으로 정의되며, 여기서 h(v)는 v가 -0°〈v〈0 °간격에서 연속적으로 변화하는 경우에 FIR 필터의 임펄스응답을 표시하고, d) 입력샘플을 선택된 필터계수로 배율하고 이와같이 얻어진 산출물을 함께 가산함으로써 출력샘플 y(n)을 발생하는 신호처리용 장치를 구비하는 것을 특징으로 하는 보간용 시간이산 필터장치.
  2. 제1항에 따른 필터장치에 있어서, 편차성분을 공급하는 수단은 주기 1/fi를 갖고 두 한계값 사이에서 제때에 선형으로 변화하는 주기적인 신호로 특색을 이루는 신호샘플을 속도 fu로 발생하는 발생기를 구비하는 것을 특징으로 하는 보간용 시간이산 필터장치.
  3. 제2항에 따른 필터장치에 있어서, 편차성분을 공급하는 수단은 또한 하나의 소정의 임계값 이상에 다른하나는 소정의 임계값 이하에 놓여진 이들 두 연속 신호샘플을 선택하는 선택수단을 구비하는 것을 특징으로 하는 보간용 시간이산 필터장치.
  4. 제2항 및 제3항에 따른 필터장치에 있어서, 상기 주기적인 신호는 톱니형으로 이루어지고, 두 한계값은 정 및 부이고 상기 임계값은 0값인것을 특징으로 하는 보간용 시간이산 필터장치.
  5. 제4항에 따른 필터장치에 있어서, 편차성분을 공급하는 수단은 두차성분을 형성하는 감산용 수단과, 감산용 수단중 제1은 소정의 정한계값과 제1선택된 신호샘플의 절대값 사이의 차와 같으며 제2는 소정의 정한계값과 제2선택된 신호샘플의 절대값 사이의 차와 같으며, 합성분을 형성하는 두차성분을 함께 가산하는 가산기와 두차성분중 적어도 하나는 합성분으로 분할하는 수단을 구비하는 것을 특징으로 하는 보간용 시간이산 필터장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019850000052A 1984-01-10 1985-01-08 보간용 시간이산 필터장치 KR930001296B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8400073A NL8400073A (nl) 1984-01-10 1984-01-10 Interpolerende filterinrichting met niet-rationale verhouding tussen de ingangs- en uitgangsbemonsterfrequentie.
NL8400073 1984-01-10

Publications (2)

Publication Number Publication Date
KR850005747A true KR850005747A (ko) 1985-08-28
KR930001296B1 KR930001296B1 (ko) 1993-02-25

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KR1019850000052A KR930001296B1 (ko) 1984-01-10 1985-01-08 보간용 시간이산 필터장치

Country Status (12)

Country Link
US (1) US4604720A (ko)
EP (1) EP0151829B1 (ko)
JP (1) JPH0642619B2 (ko)
KR (1) KR930001296B1 (ko)
AT (1) ATE41576T1 (ko)
AU (1) AU584597B2 (ko)
CA (1) CA1241381A (ko)
DE (1) DE3477327D1 (ko)
ES (1) ES8606751A1 (ko)
HK (1) HK86191A (ko)
NL (1) NL8400073A (ko)
SG (1) SG85390G (ko)

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Also Published As

Publication number Publication date
KR930001296B1 (ko) 1993-02-25
HK86191A (en) 1991-11-08
CA1241381A (en) 1988-08-30
EP0151829A1 (en) 1985-08-21
SG85390G (en) 1991-01-04
JPH0642619B2 (ja) 1994-06-01
AU584597B2 (en) 1989-06-01
EP0151829B1 (en) 1989-03-15
DE3477327D1 (en) 1989-04-20
NL8400073A (nl) 1985-08-01
ES539384A0 (es) 1986-04-01
US4604720A (en) 1986-08-05
ES8606751A1 (es) 1986-04-01
AU3738485A (en) 1985-07-18
JPS60217714A (ja) 1985-10-31
ATE41576T1 (de) 1989-04-15

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