JPS58119243U - phase synchronized oscillator - Google Patents
phase synchronized oscillatorInfo
- Publication number
- JPS58119243U JPS58119243U JP1431382U JP1431382U JPS58119243U JP S58119243 U JPS58119243 U JP S58119243U JP 1431382 U JP1431382 U JP 1431382U JP 1431382 U JP1431382 U JP 1431382U JP S58119243 U JPS58119243 U JP S58119243U
- Authority
- JP
- Japan
- Prior art keywords
- clock signal
- frequency
- signal
- input
- phase
- 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
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の位相同期発振器を示す１１７２図、第２
図は第１図の動作を示す波形図、第３図は本考案の実施
例を示す１１７２図、第４図は第３図の動作を示す波形
図である。
１・・・・・・常用人力クロック信号入力端子、２・・
・・・・予備入力りａツク信号入力端子、３・・・・・
・信号断検出部、４・・・・・・入力切替え部、５・・
・・・・分周器１．６・・・・・・位相比較器、７・・
・・・・分周器、８・・・・・・低域ろ波器、９・・・
・・・周波数可変発振器、１０・・・・・・出力端子、
１１・・・・・・時限パルス発生部、１２・・・・・・
インヒビッート回路。 −Figure 1 shows a conventional phase-locked oscillator;
1 is a waveform chart showing the operation of FIG. 1, FIG. 3 is a waveform diagram showing the embodiment of the present invention, and FIG. 4 is a waveform chart showing the operation of FIG. 1... Regular human input clock signal input terminal, 2...
・・・・Auxiliary input input terminal, 3・・・・・・
- Signal disconnection detection section, 4... Input switching section, 5...
...Frequency divider 1.6 ...Phase comparator, 7...
...Frequency divider, 8...Low pass filter, 9...
... variable frequency oscillator, 10... output terminal,
11...Timed pulse generator, 12...
inhibit circuit. −
Claims (1)
断を検出する検出部と、前記常用クロッ゛り信号の分周
クロック信号を前記位相比較器の一方の入力とし前記検
出部が前記常用クロック信号の断を検出すると前記分周
クロック信号を予備人力クロック信号の分周クロック信
号に切り替えて前記位相比較器の一方の入力とする入力
手段と、前駆位相比較器の出力に応じて出力クロック信
号の周波数が変化する発振器と、前記出力クロック信号
を分周して前記位相比較器の他方の入力とする分周器と
を有する位相同期発振器において、さらに、前記信号断
検出部の出力で駆動されこの信号断検出部の動作時間に
ほぼ等しい時間幅の時限パルスを発生する時限パルス発
生部と、この時限パルスで前記分周器の入力信号をイン
ヒビットするインヒビット回路とを備えたことを特徴表
する位相同期発振器。2 human-powered phase comparators with 1 output; a detecting section that detects disconnection of the common manual clock signal; and a frequency-divided clock signal of the common clock signal as input to one of the phase comparators, an input means for switching the frequency-divided clock signal to a frequency-divided clock signal of a standby manual clock signal and inputting the frequency-divided clock signal to one input of the phase comparator when a disconnection of the clock signal is detected; A phase synchronized oscillator including an oscillator whose signal frequency changes and a frequency divider that divides the output clock signal and inputs the frequency to the other input of the phase comparator, further driven by the output of the signal disconnection detection section. The present invention is characterized by comprising: a timed pulse generation section that generates a timed pulse having a time width approximately equal to the operating time of the signal disconnection detection section; and an inhibit circuit that inhibits the input signal of the frequency divider using the timed pulse. phase-locked oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1431382U JPS58119243U (en) | 1982-02-04 | 1982-02-04 | phase synchronized oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1431382U JPS58119243U (en) | 1982-02-04 | 1982-02-04 | phase synchronized oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58119243U true JPS58119243U (en) | 1983-08-13 |
Family
ID=30026783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1431382U Pending JPS58119243U (en) | 1982-02-04 | 1982-02-04 | phase synchronized oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58119243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157125A (en) * | 1987-05-14 | 1989-06-20 | Nec Corp | Phase locked loop circuit |
-
1982
- 1982-02-04 JP JP1431382U patent/JPS58119243U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157125A (en) * | 1987-05-14 | 1989-06-20 | Nec Corp | Phase locked loop circuit |
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