KR940017107A - Digital frequency modulator - Google Patents

Digital frequency modulator Download PDF

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Publication number
KR940017107A
KR940017107A KR1019920023813A KR920023813A KR940017107A KR 940017107 A KR940017107 A KR 940017107A KR 1019920023813 A KR1019920023813 A KR 1019920023813A KR 920023813 A KR920023813 A KR 920023813A KR 940017107 A KR940017107 A KR 940017107A
Authority
KR
South Korea
Prior art keywords
lookup table
frequency
signal
address
component
Prior art date
Application number
KR1019920023813A
Other languages
Korean (ko)
Other versions
KR970007880B1 (en
Inventor
남석훈
이상호
Original Assignee
윤종용
삼성전자 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 윤종용, 삼성전자 주식회사 filed Critical 윤종용
Priority to KR1019920023813A priority Critical patent/KR970007880B1/en
Publication of KR940017107A publication Critical patent/KR940017107A/en
Application granted granted Critical
Publication of KR970007880B1 publication Critical patent/KR970007880B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)

Abstract

디지탈 주파수변조기는 일반적으로 주파수변조기능이 필요로 하는 모든 시스템에 적용가능한 것으로, 룩업테이블을 이용하여 디지탈적으로 신호처리함으로써 종전의 아날로그신호로 처리된 경우에 발생되는 문제점을 해결하기 위한 것이다. 이를 위하여 기록 혹은 전송하고자 하는 신호의 변화에 따라 변하하는 위상 값을 입력으로 받아 주파수 변조된 값을 출력하기 위한 데이터를 저장하고 있는 룩업테이블; 주파수변조기가 적용되는 시스템 규격 및 룩업테이블의 크기에 의하여 결정되는 캐리어주파수를 결정하는 성분과 주파수편이를 결정하는 성분 및 입력신호를 이용하여 룩업테이블로 부터 독출된 정보에 대한 어드레스를 발생하기 위한 어드레스발생부; 및 어드레스발생부에서 출력되는 신호를 적분하여 룩업테이블로 전달하기 위한 적분기를 포함하도록 구성된다.Digital frequency modulators are generally applicable to all systems requiring a frequency modulation function, and are intended to solve problems caused by conventional analog signals by performing digital signal processing using a lookup table. To this end, a lookup table for receiving a phase value that changes according to the change of the signal to be recorded or transmitted as an input and stores data for outputting a frequency-modulated value; An address for generating an address for information read from the lookup table using an input signal and a component for determining a carrier frequency determined by the system standard to which the frequency modulator is applied and the size of the lookup table. Generator; And an integrator for integrating the signal output from the address generator and delivering the signal to the lookup table.

Description

디지탈 주파수변조기Digital frequency modulator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 디지탈 주파수변조기의 구성도이다.1 is a block diagram of a digital frequency modulator according to the present invention.

Claims (2)

기록 혹은 전송하고자 하는 신호의 크기변화에 따라 주파수를 변화시키는 주파수변조기에 있어서; 상기 신호의 변화에 따라 변화하는 위상 값을 입력으로 받아 주파수 변조된 값을 출력하기 위한 데이터를 저장하고 있는 룩업테이블; 상기 주파수변조기가 적용되는 시스템 규격 및 상기 룩업테이블의 크기(어드레스 사이즈)에 의하여 결정되는 주파수편이를 결정하는 제1성분과 캐리어주파수를 결정하는 제2성분 및 입력신호를 이용하여 상기 룩업테이블로 부터 독출될 정보에 대한 어드레스를 발생하기 위한 어드레스발생부; 및 상기 어드레스발생부에서 출력되는 신호를 적분하여 상기 룩업테이블로 전달하기 위한 적분기를 포함함을 특징으로 하는 디지탈 주파수변조기.In the frequency modulator for changing the frequency according to the change in the size of the signal to be recorded or transmitted; A lookup table that receives data of a phase that changes according to the change of the signal and stores data for outputting a frequency modulated value; From the lookup table using a first component that determines the frequency shift determined by the system standard to which the frequency modulator is applied and the size (address size) of the lookup table, a second component that determines the carrier frequency, and an input signal. An address generator for generating an address for information to be read; And an integrator for integrating the signal output from the address generator and delivering the signal to the lookup table. 제1항에 있어서, 상기 어드레스발생부는 기록 또는 전송하고자 하는 신호가 인가되면 주파수편이를 결정하는 성분이 상기제1성분과 곱셈한 값을 출력하기 위한 곱셈기, 캐리어주파수를 결정하는 상기 제2성분을 발생하는 캐리어주파수 발생수단, 상기 곱셈기에 출력되는 신호와 상기 캐리어주파수 발생 수단에서 출력되는 신호를 가산하기 위한 가산기로 이루어짐을특징으로 하는 디지탈 주파수변조기.2. The apparatus of claim 1, wherein the address generator is configured to output a value obtained by multiplying the first component by a component for determining a frequency shift when the signal to be recorded or transmitted is applied, and the second component for determining a carrier frequency. And an adder for adding the generated carrier frequency generating means and the signal output from the multiplier and the signal output from the carrier frequency generating means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920023813A 1992-12-10 1992-12-10 Digital frequency modulator KR970007880B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920023813A KR970007880B1 (en) 1992-12-10 1992-12-10 Digital frequency modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920023813A KR970007880B1 (en) 1992-12-10 1992-12-10 Digital frequency modulator

Publications (2)

Publication Number Publication Date
KR940017107A true KR940017107A (en) 1994-07-25
KR970007880B1 KR970007880B1 (en) 1997-05-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920023813A KR970007880B1 (en) 1992-12-10 1992-12-10 Digital frequency modulator

Country Status (1)

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KR (1) KR970007880B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100357520B1 (en) * 2000-12-06 2002-10-19 삼성광주전자 주식회사 A vapor discharge device of coffee vending machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100357520B1 (en) * 2000-12-06 2002-10-19 삼성광주전자 주식회사 A vapor discharge device of coffee vending machine

Also Published As

Publication number Publication date
KR970007880B1 (en) 1997-05-17

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