KR960016125A - Programmable Filter and Control Method - Google Patents

Programmable Filter and Control Method Download PDF

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Publication number
KR960016125A
KR960016125A KR1019940025840A KR19940025840A KR960016125A KR 960016125 A KR960016125 A KR 960016125A KR 1019940025840 A KR1019940025840 A KR 1019940025840A KR 19940025840 A KR19940025840 A KR 19940025840A KR 960016125 A KR960016125 A KR 960016125A
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South Korea
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digital
unit
analog
frequency
signal
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KR1019940025840A
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Korean (ko)
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KR0122329B1 (en
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공영준
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배순훈
대우전자 주식회사
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00Networks using digital techniques
    • H03H17/02Frequency selective networks
    • H03H17/0211Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms
    • H03H17/0213Frequency domain filters using Fourier transforms
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00Networks using digital techniques
    • H03H17/02Frequency selective networks
    • H03H17/0223Computation saving measures; Accelerating measures
    • H03H17/0238Measures concerning the arithmetic used

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Networks Using Active Elements (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

외부신호를 아날로그/디지탈부에 의해 디지탈 데이타로 변환하여 메모리부에 저장하고, 그 저장된 디지탈 데이타를 고속프리에 변환하여 상기 메모리부에 저장하고, 키입력부를 통해 입력된 차단주파수 이상, 이하 및 두차단주파수 이외의 부분의 신호의 세기를 “0”으로 설정하여 상기 메모리부에 저장하고 그 저장 데이타를 이산프리에 역변환하여 디지타 데이타를 생성하고 그 디지탈 데이타를 디지탈/아날로그 변환하여 필터링된 아날로그 신호를 재생한다.The external signal is converted into digital data by analog / digital unit and stored in the memory unit, and the stored digital data is converted into high-speed free and stored in the memory unit. Set the strength of the signal other than the frequency to “0” and store it in the memory unit, and convert the stored data into discrete free to generate digital data, and digital / analog convert the digital data to reproduce the filtered analog signal. do.

Description

프로그래머블 필터 및 그 제어방법Programmable Filter and Control Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 의한 프로그래머블 필터의 일실시예의 블럭도이다,2 is a block diagram of one embodiment of a programmable filter according to the present invention.

제3도(A) 및 (B)는 본 발명에 의한 프로그래머블 필터를 제어하는 방법을 보이는 플로우차트이다.3 (A) and (B) are flowcharts showing a method of controlling the programmable filter according to the present invention.

Claims (3)

프로그래머블 필터에 있어서, 외부 아날로그 신호를 디지탈 신호로 변환하는 아날로그/디지탈 변환부와, 기준클록을 발생시키는 클록발생부와, 제어프로그램 및 데이타가 저장되는 메모리부와, 차단주파수를 입력하는 키입력부와, 입력된 주파수 범위 및 상태를 표시하는 표시부와, 상기 클록발생부에서 기록클록을 공급받고, 상기 아날로그/디지탈 변환부로 부터 디지탈 신호를 받아 상기 메모리부에 저장하고, 상기 저장된 디지탈 신호를 읽어들여 고속프리에 변환을 수행하여 상기 메모리부에 저장하고, 상기 키입력부를 통해 입력된 주파수로 필터링 과정을 수행하여 상기 메모리부에 저장하고, 다시 읽어들여 이산프리에 역변환하여 디지탈 데이타를 생성하여 출력하는 제어부와, 상기 제어부로 부터 디지탈 데이타를 받아 아날로그 신호로 변환하는 디지탈/아날로그 변환부를 구비하는 것을 특징으로 하는 프로그래머블 필터.A programmable filter comprising: an analog / digital converter for converting an external analog signal into a digital signal, a clock generator for generating a reference clock, a memory for storing control programs and data, a key input for inputting a cutoff frequency, And a display unit for displaying the input frequency range and state, a recording clock supplied from the clock generator, a digital signal received from the analog / digital converter, and stored in the memory unit, and the digital signal is read and stored at high speed. A control unit which performs pre-conversion, stores the memory unit, performs a filtering process at a frequency input through the key input unit, stores the memory unit, reads back, inversely converts the discrete free unit, and generates and outputs digital data; Receives digital data from the controller and converts it into an analog signal A programmable filter which is characterized in that it comprises digital / analog converting units. 제1항에 있어서, 필터링 과정은 상기 키입력부를 통해 입력된 차단주파수 이상, 이하 및 두차단 주파수 이외의 주파수의 신호의 세기를 “0”으로 설정하는 과정인 것을 특징으로 하는 프로그래머블 필터.The programmable filter as claimed in claim 1, wherein the filtering process is a process of setting a strength of a signal having a frequency other than a cutoff frequency, a lower cutoff frequency, and a second cutoff frequency input through the key input unit to “0”. 프로그래머블 필터의 제어방법에 있어서, 키입력부를 통해 필터링 주파수를 입력받아 표시부에 표시하는 단계와, 아날로그/디지탈 변환부로 부터 디지탈 신호를 받아 메모리부에 저장하는 단계와, 상기 저장된 디지탈 신호를 읽어들여 고속프리에 변환을 수행하여 상기 메모리부에 저장하는 단계와, 상기 키입력부를 통해 입력된 차단주파수에 의해 필터링 과정을 수행하여 상기 메모리부에 저장하는 단계와, 상기 필터링되어 저장된 데이타를 이산프리에 역변환을 수행하여 디지탈 데이타를 생성하는 단계와, 상기 디지탈 데이타를 디지탈/아날로그부에 의해 디지탈/아날로그 변환하여 출력하는 단계를 구비하는 것을 특징으로 하는 프로그래머블 필터의 제어 방법.A control method of a programmable filter, the method comprising: receiving a filtering frequency through a key input unit and displaying the filtering frequency, receiving a digital signal from an analog / digital converter, storing the digital signal in a memory unit, and reading the stored digital signal at a high speed. Performing a free transform and storing the memory unit, performing a filtering process based on a cutoff frequency input through the key input unit, storing the filtered unit, and performing inverse transformation on the filtered and stored data. And generating digital data, and digitally / analogly converting the digital data by a digital / analog unit and outputting the digital data. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940025840A 1994-10-10 1994-10-10 Programmable filter and its controlling method KR0122329B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940025840A KR0122329B1 (en) 1994-10-10 1994-10-10 Programmable filter and its controlling method

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Application Number Priority Date Filing Date Title
KR1019940025840A KR0122329B1 (en) 1994-10-10 1994-10-10 Programmable filter and its controlling method

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KR960016125A true KR960016125A (en) 1996-05-22
KR0122329B1 KR0122329B1 (en) 1997-12-05

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KR20020053224A (en) * 2000-12-27 2002-07-05 박태진 Device and method for automatically tuning of tunable filter

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