JPH0210637U - - Google Patents
Info
- Publication number
- JPH0210637U JPH0210637U JP8924888U JP8924888U JPH0210637U JP H0210637 U JPH0210637 U JP H0210637U JP 8924888 U JP8924888 U JP 8924888U JP 8924888 U JP8924888 U JP 8924888U JP H0210637 U JPH0210637 U JP H0210637U
- Authority
- JP
- Japan
- Prior art keywords
- output
- variable frequency
- controlled oscillator
- voltage
- frequency divider
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案に係る信号発生回路の一実施例
を示す構成ブロツク図、第２図は第１図装置の位
相ロツク判別回路５の構成を示す要部回路図、第
３図は第１図装置の動作を示すフローチヤート、
第４図〜第６図は第２図回路の動作を示すタイム
チヤート、第７図は第２図回路の信号出力を示す
表、第８図は信号発生回路の従来例を示す構成ブ
ロツク図である。
１……第１の電圧制御発振器、２……可変分周
器、３……位相検出器、５……位相ロツク判別回
路、６……制御手段、７……第２の電圧制御発振
器、Ｓｒ……基準信号、Ｎ……分周比。
FIG. 1 is a configuration block diagram showing one embodiment of the signal generation circuit according to the present invention, FIG. Flowchart showing the operation of the device,
Figures 4 to 6 are time charts showing the operation of the circuit in Figure 2, Figure 7 is a table showing the signal output of the circuit in Figure 2, and Figure 8 is a configuration block diagram showing a conventional example of a signal generation circuit. be. DESCRIPTION OF SYMBOLS 1... First voltage controlled oscillator, 2... Variable frequency divider, 3... Phase detector, 5... Phase lock discrimination circuit, 6... Control means, 7... Second voltage controlled oscillator, Sr ...Reference signal, N...Division ratio.
Claims (1)
変の第２の電圧制御発振器の混合出力を発生する
信号発生回路において、 第１の電圧制御発振器の出力を分周する分周比
可変の可変分周器と、この可変分周器の出力と基
準信号の位相差を検出しその出力に基づいて前記
第１の電圧制御発振器を制御する位相検出器と、
前記可変分周器の出力および基準信号に基づいて
前記分周比の大小を判別する位相ロツク判別回路
と、この位相ロツク判別回路の出力に基づいて前
記可変分周器の分周比および前記第２の電圧制御
発振器の出力周波数を制御する制御手段とを備え
、制御手段が可変分周器の分周比を変えることに
より可変分周器の出力が基準信号に位相ロツクす
るように構成したことを特徴とする信号発生器。[Claims for Utility Model Registration] In a signal generation circuit that generates a mixed output of a first voltage-controlled oscillator with a fixed frequency and a second voltage-controlled oscillator with a variable frequency, the output of the first voltage-controlled oscillator is frequency-divided. a variable frequency divider with a variable frequency division ratio; a phase detector that detects a phase difference between the output of the variable frequency divider and a reference signal and controls the first voltage controlled oscillator based on the output;
a phase lock discrimination circuit that discriminates the magnitude of the frequency division ratio based on the output of the variable frequency divider and a reference signal; and a phase lock discrimination circuit that discriminates the frequency division ratio of the variable frequency divider and the and control means for controlling the output frequency of the voltage controlled oscillator No. 2, and the control means is configured such that the output of the variable frequency divider is phase-locked to the reference signal by changing the frequency division ratio of the variable frequency divider. A signal generator featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8924888U JPH0210637U (en) | 1988-07-05 | 1988-07-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8924888U JPH0210637U (en) | 1988-07-05 | 1988-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210637U true JPH0210637U (en) | 1990-01-23 |
Family
ID=31313800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8924888U Pending JPH0210637U (en) | 1988-07-05 | 1988-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51134597U (en) * | 1975-04-18 | 1976-10-30 | ||
| JPS5441892U (en) * | 1977-08-25 | 1979-03-20 |
-
1988
- 1988-07-05 JP JP8924888U patent/JPH0210637U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51134597U (en) * | 1975-04-18 | 1976-10-30 | ||
| JPS5441892U (en) * | 1977-08-25 | 1979-03-20 |
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