JPS6057284U - Horizontal synchronization signal period abnormality detection circuit - Google Patents
Horizontal synchronization signal period abnormality detection circuitInfo
- Publication number
- JPS6057284U JPS6057284U JP15023883U JP15023883U JPS6057284U JP S6057284 U JPS6057284 U JP S6057284U JP 15023883 U JP15023883 U JP 15023883U JP 15023883 U JP15023883 U JP 15023883U JP S6057284 U JPS6057284 U JP S6057284U
- Authority
- JP
- Japan
- Prior art keywords
- synchronization signal
- horizontal synchronization
- abnormality detection
- detection circuit
- period
- 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.)
- Granted
Links
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
- Synchronizing For Television (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Details Of Television Scanning (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図はこの考案による実施例の構成図、第２図は第１
図会部の波形例を示す図、第３図は論理積回路４の回路
図の一例を示す図。
１・・・端子、２・・・リトリガ型単安定マルチバイブ
レータ、３・・・リトリガ型単安定マルチバイブレータ
、４・・・論理積回路、５・・・出力端子。Figure 1 is a configuration diagram of an embodiment according to this invention, and Figure 2 is a diagram of the first embodiment.
FIG. 3 is a diagram showing an example of the waveform of the diagram part, and FIG. 3 is a diagram showing an example of the circuit diagram of the AND circuit 4. 1... Terminal, 2... Retrigger type monostable multivibrator, 3... Retrigger type monostable multivibrator, 4... AND circuit, 5... Output terminal.
Claims (1)
周期Ｔ２および周期Ｔ３が Ｔ３＞Ｔ、＞Ｔ２の関係にあるとき、 前記水平同期信号を入力し、前記水平同期信号の立下り
で動作し、周期Ｔ２で復帰する第１のリトリガ型単安定
マルチバイブレータと、前記水平同期信号を入力し、前
記水平同期信号の立下りで動作し、周期Ｔ３で復帰する
第２のリトリガ型単安定マルチバイブレータと、前記水
平同期信号と第１のＩＪ ） ＩＪガ型単安定マルチバ
イブレータの「０」出力と第２のリートリガ型単安定マ
ルチバイブレータの「１」出力とを入力する論理積回路
とを備え、 前記水平同期信号の周期Ｔが、Ｔ３＞Ｔ＞Ｔ２の関係に
あるときだけ前記論理積回路から前記水平 −同期信
号を出力することを特徴とする水平同期信号の周期異常
検出回路。[Claims for Utility Model Registration] Inputting the horizontal synchronizing signal when the normal period T□ of the horizontal synchronizing signal has a period T2 and a period T3 within an allowable range such that T3>T,>T2, A first retrigger type monostable multivibrator that operates at the falling edge of the horizontal synchronizing signal and returns at a period T2; a second retrigger type monostable multivibrator, the horizontal synchronization signal, the first IJ) output of the IJ type monostable multivibrator, and a “1” output of the second retrigger type monostable multivibrator. and an AND circuit that inputs the horizontal synchronization signal, and the horizontal synchronization signal is output from the AND circuit only when the period T of the horizontal synchronization signal satisfies the relationship T3>T>T2. Signal cycle abnormality detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15023883U JPS6057284U (en) | 1983-09-28 | 1983-09-28 | Horizontal synchronization signal period abnormality detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15023883U JPS6057284U (en) | 1983-09-28 | 1983-09-28 | Horizontal synchronization signal period abnormality detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6057284U true JPS6057284U (en) | 1985-04-22 |
| JPS6325809Y2 JPS6325809Y2 (en) | 1988-07-13 |
Family
ID=30333273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15023883U Granted JPS6057284U (en) | 1983-09-28 | 1983-09-28 | Horizontal synchronization signal period abnormality detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057284U (en) |
-
1983
- 1983-09-28 JP JP15023883U patent/JPS6057284U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6325809Y2 (en) | 1988-07-13 |
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