JPS55105442A - Phase synchronous circuit - Google Patents
Phase synchronous circuitInfo
- Publication number
- JPS55105442A JPS55105442A JP1297579A JP1297579A JPS55105442A JP S55105442 A JPS55105442 A JP S55105442A JP 1297579 A JP1297579 A JP 1297579A JP 1297579 A JP1297579 A JP 1297579A JP S55105442 A JPS55105442 A JP S55105442A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- phase synchronous
- circuit
- phase
- control type
- 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 abstract 7
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000005070 sampling Methods 0.000 abstract 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
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To realize the phase synchronization with the carrier even for the signals other than the TV signal by securing the function as the sample value control type synchronous system at the transmission time of the TV signal and the function as the continuous control type synchronous system otherwise each. CONSTITUTION:When switch 13 is set toward (A), the circuit functions as the sample value control type phase synchronous system. When switch 13 is set toward (B), the supply of the sample pulses is discontinued to gate circuit 3 and sample holding circuit 5 to secure the continuous action. At the same time, switch 13 also switches the transmission characteristics of loop filter 6' of the phase synchronous circuit. Thus the phase synchronous circuits for both the sampling control and the continuous control is realized by one phase synchronous circuit according to the purpose via the operation of switch 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1297579A JPS55105442A (en) | 1979-02-07 | 1979-02-07 | Phase synchronous circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1297579A JPS55105442A (en) | 1979-02-07 | 1979-02-07 | Phase synchronous circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55105442A true JPS55105442A (en) | 1980-08-13 |
Family
ID=11820222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1297579A Pending JPS55105442A (en) | 1979-02-07 | 1979-02-07 | Phase synchronous circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55105442A (en) |
-
1979
- 1979-02-07 JP JP1297579A patent/JPS55105442A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55105442A (en) | Phase synchronous circuit | |
JPS5359185A (en) | Remote control signal system | |
JPS53118927A (en) | Video detecting unit | |
JPS52129358A (en) | Wide-band phase locked loop circuit | |
JPS53110313A (en) | Auotmatic frequency control circuit with auotmatic frequency control signal transmission system state switched and changed automatically according to receiving state | |
JPS5288744A (en) | Load concentrating control type receiver | |
JPS545544A (en) | Control system for power line carrier in indoor load | |
JPS55130244A (en) | Radio communication unit | |
JPS5434747A (en) | Fm demodulation circuit of phase tracking loop system | |
JPS5365007A (en) | Transmission system for intermittent signal | |
JPS5289013A (en) | Switching circuit of compound device | |
JPS56128076A (en) | Trigger circuit | |
JPS53124008A (en) | Call signal transmission system | |
JPS56119553A (en) | Timing reproducing device | |
JPS5285454A (en) | Key input circuit | |
JPS53145516A (en) | Video signal switching system | |
JPS55147876A (en) | Facsimile receiving unit | |
JPS5376602A (en) | Circuit switching system | |
JPS5690621A (en) | Channel selector | |
JPS5336425A (en) | Color television picture receiver of beam index time | |
JPS5393879A (en) | Frequency judgement circuit | |
JPS5630338A (en) | Signal change-over system | |
JPS5652972A (en) | Automatic frequency control unit | |
JPS5662446A (en) | Change-over system for external interface | |
JPS5492715A (en) | Frequency modulator |