KR19980026381A - 동기상태 감시회로 - Google Patents
동기상태 감시회로 Download PDFInfo
- Publication number
- KR19980026381A KR19980026381A KR1019960044804A KR19960044804A KR19980026381A KR 19980026381 A KR19980026381 A KR 19980026381A KR 1019960044804 A KR1019960044804 A KR 1019960044804A KR 19960044804 A KR19960044804 A KR 19960044804A KR 19980026381 A KR19980026381 A KR 19980026381A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- output
- phase
- input
- reset
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 title claims abstract description 18
- 230000010363 phase shift Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
- H03L7/0812—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used
- H03L7/0814—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used the phase shifting device being digitally controlled
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
Description
Claims (2)
- 위상 동기루프(Phase Locked Loop, PLL) 동기회로의 동기상태를 감시하는 회로에 있어서,위상 동기루프(PLL) 동기회로의 입력클럭과 출력클럭을 입력으로 하여, 출력클럭에 대한 입력클럭의 위상관계를 신호레벨로 감지하여 출력하는 위상 검출기와;상기 위상 검출기가 출력하는 위상관계를 나타내는 신호를 입력하여, 신호레벨에 변동이 발생할 경우 변동 횟수를 계수하고 계수한 값과 기준 설정값을 비교하여 위상변동 검출신호를 출력하며, 계수한 값이 기준 설정값과 같게 되면 하기의 신호유지 및 리셋기로부터 리셋신호를 입력하여 계수기 출력값을 초기 상태로 리셋하는 계수 및 비교기와;상기 계수 및 비교기가 출력하는 위상변동 검출신호를 입력하여 신호를 일정 시간 동안 유지시켜 출력하며, 계수기가 계수한 값이 기준 설정값과 같게 되는 경우에는 리셋신호를 발생시켜 상기 계수 및 비교기 내의 계수기를 리셋하는 신호유지 및 리셋기와;상기 위상 동기루프(PLL) 동기회로의 입력클럭을 입력하여 장애를 감시하고 출력하는 입력클럭 감시기와;상기 신호유지 및 리셋기의 출력과 상기 입력클럭 감시기의 출력을 각각 입력한 후 이를 논리연산하여 위상 동기루프(PLL) 동기회로의 동기상태 신호를 발생시키는 동기상태신호 발생기로 구성된 것을 특징으로 하는 동기상태 감시회로.
- 제 1 항에 있어서, 상기 계수 및 비교기는시프트 레지스터를 사용한 것을 특징으로 하는 동기상태 감시회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960044804A KR100221496B1 (ko) | 1996-10-09 | 1996-10-09 | 동기상태 감시회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960044804A KR100221496B1 (ko) | 1996-10-09 | 1996-10-09 | 동기상태 감시회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980026381A true KR19980026381A (ko) | 1998-07-15 |
KR100221496B1 KR100221496B1 (ko) | 1999-09-15 |
Family
ID=19476774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960044804A Expired - Fee Related KR100221496B1 (ko) | 1996-10-09 | 1996-10-09 | 동기상태 감시회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100221496B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111757216A (zh) * | 2019-03-29 | 2020-10-09 | 拉碧斯半导体株式会社 | 播放装置 |
-
1996
- 1996-10-09 KR KR1019960044804A patent/KR100221496B1/ko not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111757216A (zh) * | 2019-03-29 | 2020-10-09 | 拉碧斯半导体株式会社 | 播放装置 |
CN111757216B (zh) * | 2019-03-29 | 2023-08-01 | 拉碧斯半导体株式会社 | 播放装置 |
Also Published As
Publication number | Publication date |
---|---|
KR100221496B1 (ko) | 1999-09-15 |
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PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19961009 |
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Comment text: Notification of reason for refusal Patent event date: 19981110 Patent event code: PE09021S01D |
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Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19990409 |
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