KR960006299A - Phase locked loop device - Google Patents

Phase locked loop device Download PDF

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Publication number
KR960006299A
KR960006299A KR1019940018633A KR19940018633A KR960006299A KR 960006299 A KR960006299 A KR 960006299A KR 1019940018633 A KR1019940018633 A KR 1019940018633A KR 19940018633 A KR19940018633 A KR 19940018633A KR 960006299 A KR960006299 A KR 960006299A
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KR
South Korea
Prior art keywords
voltage
code
frequency
error signal
input
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Application number
KR1019940018633A
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Korean (ko)
Inventor
홍창수
박용준
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940018633A priority Critical patent/KR960006299A/en
Publication of KR960006299A publication Critical patent/KR960006299A/en

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Abstract

본 발명은 파형 형태가 아닌 카운터 값의 형태로 전송되어 오는 다수의 기준 주파수를 입력 주파수와 동기시키는 위상 동리 루프 장치가 개시되는, 이는 카운터 값으로 전송되는 기준 주파수와 입력 주파수간의 위상차를 출력하는 에러 신호 발생부(10)와, 상기 에러 신호 발생부(10)의 출력 코드를 후단의 전압 제어 발진기의 스윙범위에 맞게 변화시키는 코드 변환부(20)와, 상기 코드 변환부(20)에서 출력되는 코드 값을 전압 레벨로 변환시키는 디지탈/아날로그 변환부(30)와, 각각 가변 전압 범위가 다르며, 각각 자신의 전압 범위 안에서 전압 레벨로 변환된 위상차의 입력에 따라 기준 주파수에 동기되는 해당 주파수 신호를 발생하는 다수의 전압 제어 발진기(5l,..5n-l,5n)와, 시스템 파워 온후의 전송되는 첫 기준 주파수를 초기값으로 사용한 후 상기 전압 제어 발진기에 제어되어 전체 시스템의 시간축을 나타내는 입력 주파수를 출력하는 시스템 클럭 카운터(70)로 구성되어, 상기 전압 제어 발진기의 전압 스윙 범위에 맞게 에러 신호를 변환한 후 아날로그 신호로 변환하여 상기 전압 제어 발진기에 출력함으로써, 하나의 에러 신호를 이용하여 카운터 값으로 전송되는 다수의 주파수를 입력 주파수와 동기시킬 수 있다.The present invention discloses a phase isolation loop device for synchronizing a plurality of reference frequencies transmitted in a counter value rather than a waveform form with an input frequency, which outputs a phase difference between the reference frequency and the input frequency transmitted as a counter value. A signal converter 10 and a code converter 20 for changing the output code of the error signal generator 10 according to a swing range of a voltage controlled oscillator of a subsequent stage, and the code converter 20 A digital / analog converter 30 for converting a code value to a voltage level, and a variable voltage range is different, respectively, and a corresponding frequency signal synchronized with a reference frequency according to an input of a phase difference converted to a voltage level within its own voltage range. The voltages are generated after using the generated multiple voltage-controlled oscillators 5l, .5n-l, 5n and the first reference frequency transmitted after the system is turned on. The system clock counter 70 is controlled by a control oscillator and outputs an input frequency representing the time base of the entire system. The voltage control is performed by converting an error signal according to the voltage swing range of the voltage controlled oscillator and converting the error signal into an analog signal. By outputting to the oscillator, a plurality of frequencies transmitted as counter values can be synchronized with the input frequency using one error signal.

Description

위상 동기 루프 장치Phase locked loop device

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

제2도는 본 발명에 따른 위상 동기 루프 장치의 일 실시예를 나타낸 블럭도.2 is a block diagram showing an embodiment of a phase locked loop device according to the present invention.

제3도는 제2도의 각 부의 동작을 설명하기 위한 파형도.3 is a waveform diagram for explaining the operation of each part of FIG.

Claims (1)

카운터 값으로 전송되는 기준 주파수와 입력 주파수간의 위상차를 출력하는 에러 신호 발생부(10)와:상기 에러 신호 발생부(10)의 출력 코드를 후단의 전압 제어 발진기의 스윙범위에 맞게 변화시키는 코드 변환부(20)와; 상기 코드 변환부(20)에서 출력되는 코드 값을 전압 레벨로 변환시키는 디지탈/아날로그 변환부(30)와; 상기 디지탈/아날로그 변환부(30)에 접속되어 각각 가변 전압 범위가 다르며, 각각 자신의 전압 범위 안에서 전압 레벨로 변환된 위상차의 입력에 따라 기준 주파수에 동기되는 해당 주파수 신호를 발생하는 다수의 전압 제어 발진기(5l,···5n-l,5n)와; 시스템 파워 온후의 전송되는 첫 기준 주파수를 초기값으로 사용한 후 상기 전압 제어 발진기(5l,···5n-l,5n)중에서 하나의 전압 제어 발진기에 제어되어 전체 시스템의 시간축을 나타내는 입력 주파수를 에러 신호 발생부(10)로 출력하는 시스템 클럭 카운터(70)를 포함하여 이루어지는 위상 동기 루프 장치.Error signal generator 10 for outputting a phase difference between the reference frequency and the input frequency transmitted as a counter value: Code conversion for changing the output code of the error signal generator 10 to the swing range of the voltage controlled oscillator Section 20; A digital / analog converter 30 for converting a code value output from the code converter 20 to a voltage level; A plurality of voltage controls connected to the digital / analog converter 30 to generate a corresponding frequency signal synchronized with a reference frequency according to an input of a phase difference respectively converted to a voltage level within a respective voltage range. Oscillators 5l, ... 5n-1, 5n; After using the first reference frequency transmitted after system power-on as an initial value, one of the voltage-controlled oscillators 5l, ... 5n-l, 5n is controlled by one of the voltage-controlled oscillators to error an input frequency representing the time base of the entire system. A phase locked loop device including a system clock counter (70) for outputting to a signal generator (10). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940018633A 1994-07-29 1994-07-29 Phase locked loop device KR960006299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940018633A KR960006299A (en) 1994-07-29 1994-07-29 Phase locked loop device

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Application Number Priority Date Filing Date Title
KR1019940018633A KR960006299A (en) 1994-07-29 1994-07-29 Phase locked loop device

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KR960006299A true KR960006299A (en) 1996-02-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970021124A (en) * 1995-10-31 1997-05-28 이웅열 Biodegradable Aliphatic Polyester Copolymer
KR970042653A (en) * 1995-12-30 1997-07-24 이웅열 Method for producing aliphatic polyester having excellent degradability and injection molded product thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970021124A (en) * 1995-10-31 1997-05-28 이웅열 Biodegradable Aliphatic Polyester Copolymer
KR970042653A (en) * 1995-12-30 1997-07-24 이웅열 Method for producing aliphatic polyester having excellent degradability and injection molded product thereof

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