JPS52124846A - Filter switch of digital phase synchronous oscillator - Google Patents
Filter switch of digital phase synchronous oscillatorInfo
- Publication number
- JPS52124846A JPS52124846A JP4145576A JP4145576A JPS52124846A JP S52124846 A JPS52124846 A JP S52124846A JP 4145576 A JP4145576 A JP 4145576A JP 4145576 A JP4145576 A JP 4145576A JP S52124846 A JPS52124846 A JP S52124846A
- Authority
- JP
- Japan
- Prior art keywords
- digital phase
- phase synchronous
- filter switch
- synchronous oscillator
- oscillator
- 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.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title 1
Classifications
-
- 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
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
- H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth
-
- 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
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
- H03L7/0893—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump the up-down pulses controlling at least two source current generators or at least two sink current generators connected to different points in the loop
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4145576A JPS52124846A (en) | 1976-04-12 | 1976-04-12 | Filter switch of digital phase synchronous oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4145576A JPS52124846A (en) | 1976-04-12 | 1976-04-12 | Filter switch of digital phase synchronous oscillator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52124846A true JPS52124846A (en) | 1977-10-20 |
Family
ID=12608837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4145576A Pending JPS52124846A (en) | 1976-04-12 | 1976-04-12 | Filter switch of digital phase synchronous oscillator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52124846A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0695038A1 (en) * | 1994-07-28 | 1996-01-31 | Thomson Consumer Electronics, Inc. | Fast acting control system |
-
1976
- 1976-04-12 JP JP4145576A patent/JPS52124846A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0695038A1 (en) * | 1994-07-28 | 1996-01-31 | Thomson Consumer Electronics, Inc. | Fast acting control system |
US5686866A (en) * | 1994-07-28 | 1997-11-11 | Thomson Consumer Electronics, Inc. | Phase locked loop providing fast tuning for large frequency changes |
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