JPH0386632U - - Google Patents
Info
- Publication number
- JPH0386632U JPH0386632U JP14774689U JP14774689U JPH0386632U JP H0386632 U JPH0386632 U JP H0386632U JP 14774689 U JP14774689 U JP 14774689U JP 14774689 U JP14774689 U JP 14774689U JP H0386632 U JPH0386632 U JP H0386632U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- phase
- charging
- circuit
- discharging circuit
- 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
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Manipulation Of Pulses (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
第１図はこの考案の一実施例の構成を示すブロ
ツク図。第２図はこの考案の一実施例の作用の説
明に供するタイミング図。第３図は従来例の構成
を示すブロツク図。第４図は第３図に示す従来例
の作用の説明に供するタイミング図。
１……位相比較器としての排他論理和回路、２
Ａ……プリバーストタイミング回路、３……バー
ストタイミング回路、６，８および１３……３ス
テートゲート、７……コンデンサ、１０……ラツ
チ回路、１１……排他論理和回路。
FIG. 1 is a block diagram showing the configuration of an embodiment of this invention. FIG. 2 is a timing diagram for explaining the operation of one embodiment of this invention. FIG. 3 is a block diagram showing the configuration of a conventional example. FIG. 4 is a timing chart for explaining the operation of the conventional example shown in FIG. 1... Exclusive OR circuit as a phase comparator, 2
A... Pre-burst timing circuit, 3... Burst timing circuit, 6, 8 and 13... 3-state gate, 7... Capacitor, 10... Latch circuit, 11... Exclusive OR circuit.
Claims (1)
るために位相比較出力をコンデンサによつてホー
ルドすると共に、位相比較が有効となる直前の一
定の期間の間、コンデンサを充放電してコンデン
サの電位を一定の値にするように構成した充放電
回路付位相比較回路において、前記充放電開始前
のコンデンサの電位が所定電位以上か否かを前記
一定の期間より短い所定期間保持する保持手段と
、保持手段により保持した電圧の逆極性の電圧を
コンデンサの電位が前記一定の値から反転するま
でコデンサに供給する充放電回路とを備えたこと
を特徴とする充放電回路付位相比較回路。 In order to compare the phase of the intermittent signal with the phase of the reference signal, the phase comparison output is held by a capacitor, and the capacitor is charged and discharged for a certain period of time just before the phase comparison becomes effective to increase the potential of the capacitor. in a phase comparison circuit with a charging/discharging circuit configured to maintain a constant value; 1. A phase comparator circuit with a charging/discharging circuit, comprising: a charging/discharging circuit that supplies a voltage of opposite polarity to the voltage held by the holding means to the capacitor until the potential of the capacitor is reversed from the constant value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14774689U JPH0386632U (en) | 1989-12-25 | 1989-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14774689U JPH0386632U (en) | 1989-12-25 | 1989-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0386632U true JPH0386632U (en) | 1991-09-02 |
Family
ID=31694249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14774689U Pending JPH0386632U (en) | 1989-12-25 | 1989-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0386632U (en) |
-
1989
- 1989-12-25 JP JP14774689U patent/JPH0386632U/ja active Pending
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