JPS5658335A - Pll - Google Patents
PllInfo
- Publication number
- JPS5658335A JPS5658335A JP13449779A JP13449779A JPS5658335A JP S5658335 A JPS5658335 A JP S5658335A JP 13449779 A JP13449779 A JP 13449779A JP 13449779 A JP13449779 A JP 13449779A JP S5658335 A JPS5658335 A JP S5658335A
- Authority
- JP
- Japan
- Prior art keywords
- pll
- phase comparator
- nonmodulation
- digital phase
- reference signal
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/22—Homodyne or synchrodyne circuits
- H03D1/2209—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders
- H03D1/2236—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders using a phase locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stereophonic System (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To enable to obtain the reference signal of nonmodulation up to a low- frequency band, by a cascade connection of the 1st PLL using an analog phase comparator and the 2nd PLL using a digital phase comparator. CONSTITUTION:An input modulation signal is applied to the 1st PLL 20 having broader loop band width consisting of an analog phase comparator 22, and an output of the 1st PLL 20 is applied to the 2nd PLL 30 having narrow loop band width consisting of a digital phase comparator 32 in cascade connection, nonmodulation carrier is obtained as an output. Thus, since the analog phase comparator 22 is strong against noise and capture range is wider for digital phase comparator 32, the reference signal with nonmodulation up to a low-frequency band while having stability against noise and a certain degree of capture range, can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13449779A JPS5658335A (en) | 1979-10-18 | 1979-10-18 | Pll |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13449779A JPS5658335A (en) | 1979-10-18 | 1979-10-18 | Pll |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5658335A true JPS5658335A (en) | 1981-05-21 |
Family
ID=15129695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13449779A Pending JPS5658335A (en) | 1979-10-18 | 1979-10-18 | Pll |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5658335A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60134525A (en) * | 1983-12-21 | 1985-07-17 | Matsushita Electric Ind Co Ltd | Synchronizing signal circuit |
JPS6267927A (en) * | 1985-09-19 | 1987-03-27 | Nec Corp | Phase synchronizing oscillator |
JPS63245127A (en) * | 1987-03-31 | 1988-10-12 | Nec Corp | Phase locked loop system |
JPS6436184A (en) * | 1987-07-13 | 1989-02-07 | Rca Licensing Corp | Phase locked loop apparatus |
JPS6451719A (en) * | 1987-08-22 | 1989-02-28 | Kenwood Corp | Reproducing circuit for self-synchronizing clock signal |
-
1979
- 1979-10-18 JP JP13449779A patent/JPS5658335A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60134525A (en) * | 1983-12-21 | 1985-07-17 | Matsushita Electric Ind Co Ltd | Synchronizing signal circuit |
JPS6267927A (en) * | 1985-09-19 | 1987-03-27 | Nec Corp | Phase synchronizing oscillator |
JPS63245127A (en) * | 1987-03-31 | 1988-10-12 | Nec Corp | Phase locked loop system |
JPS6436184A (en) * | 1987-07-13 | 1989-02-07 | Rca Licensing Corp | Phase locked loop apparatus |
JPS6451719A (en) * | 1987-08-22 | 1989-02-28 | Kenwood Corp | Reproducing circuit for self-synchronizing clock signal |
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