JPS6098979U - Dropout compensation circuit for playback video signal - Google Patents
Dropout compensation circuit for playback video signalInfo
- Publication number
- JPS6098979U JPS6098979U JP19062083U JP19062083U JPS6098979U JP S6098979 U JPS6098979 U JP S6098979U JP 19062083 U JP19062083 U JP 19062083U JP 19062083 U JP19062083 U JP 19062083U JP S6098979 U JPS6098979 U JP S6098979U
- Authority
- JP
- Japan
- Prior art keywords
- dropout
- video signal
- circuit
- occurrence
- compensation
- 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
- Television Signal Processing For Recording (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のドロップアウト補償回路の一例のブロッ
ク図、第２図はこの考案回路の一例のブロック図、第３
図はその説明のための図、第４図はこの考案回路の他の
例のブロック図、第５図及び第６図はその説明のための
図である。
３はドロップアウト補償動作用のスイッチ回路、４は１
水平期間の遅延回路、５はドロップアウト検出回路、１
２は時定数回路、２３はエンベロープ検波回路、２４及
び２５は比較回路である。Figure 1 is a block diagram of an example of a conventional dropout compensation circuit, Figure 2 is a block diagram of an example of this devised circuit, and Figure 3 is a block diagram of an example of a conventional dropout compensation circuit.
4 is a block diagram of another example of this devised circuit, and FIGS. 5 and 6 are diagrams for explaining the same. 3 is a switch circuit for dropout compensation operation, 4 is 1
Horizontal period delay circuit, 5 is dropout detection circuit, 1
2 is a time constant circuit, 23 is an envelope detection circuit, and 24 and 25 are comparison circuits.
Claims (1)
出するドロップアウト検出回路と、上記再生映像信号を
１水平期間遅延させる遅延回路と、上記ドロップアウト
検出回路においてドロップアウト発生が検出されたとき
その検出出力によりそのドロップアウトの期間において
上記再生映像信号に代えて上記遅延回路からの遅延再生
映像信号を上記再生映像信号に挿入するドロップアウト
補償手段と、垂直ブランキング期間において上記ドロッ
プアウト発生の度合に応じて上記ドロップアウト補償手
段の動作領域が変えられる手段とからなる再生映像信号
のドロップアウト補償回路。 ２ 垂直ブランキング期間において上記ドロップアウト
補償手段の動作領域を変える手段として、垂直ブランキ
ング期間において上記ドロップアウト検出回路により１
水平期間以上連続するドロップアウトが検出されたとき
その検出出力にもかかわらず、上記ドロップアウト補償
手段における補償動作を阻止する手段が用いられた実用
新案登録請求の範囲第１項記載の再生映像信号のドロッ
プアウト補償回路。[Claims for Utility Model Registration] 1. A dropout detection circuit that detects the occurrence of dropout in the reproduced video signal, a delay circuit that delays the reproduced video signal by one horizontal period, and a dropout detection circuit that detects the occurrence of dropout in the dropout detection circuit. dropout compensating means for inserting a delayed playback video signal from the delay circuit into the playback video signal in place of the playback video signal during the dropout period according to the detection output when the occurrence of the dropout is detected; and a vertical blanking period. A dropout compensation circuit for a reproduced video signal, comprising means for changing the operating range of the dropout compensation means according to the degree of occurrence of dropout. 2. As a means for changing the operating area of the dropout compensation means during the vertical blanking period, the dropout detection circuit
The reproduced video signal according to claim 1 of the utility model registration claim, in which means is used to prevent the compensation operation in the dropout compensation means despite the detection output when dropouts that continue for a horizontal period or more are detected. dropout compensation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19062083U JPS6098979U (en) | 1983-12-09 | 1983-12-09 | Dropout compensation circuit for playback video signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19062083U JPS6098979U (en) | 1983-12-09 | 1983-12-09 | Dropout compensation circuit for playback video signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6098979U true JPS6098979U (en) | 1985-07-05 |
Family
ID=30410681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19062083U Pending JPS6098979U (en) | 1983-12-09 | 1983-12-09 | Dropout compensation circuit for playback video signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6098979U (en) |
-
1983
- 1983-12-09 JP JP19062083U patent/JPS6098979U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR940001679A (en) | Camcorder which can dub only text information | |
| JPS6098979U (en) | Dropout compensation circuit for playback video signal | |
| JPS6121183U (en) | Dropout compensation circuit | |
| EP0189055A3 (en) | Television synchronizing signal processing circuit | |
| JPH0540621Y2 (en) | ||
| JPS6037983U (en) | Synchronous signal waveform shaping circuit | |
| JPS583679U (en) | Television signal regenerator | |
| JPS6030680U (en) | Dropout compensation circuit | |
| JPS59111368U (en) | television receiver | |
| JPS5837278U (en) | Television screen discrimination device | |
| JPS58125463U (en) | Contour correction circuit for video signals | |
| JPS617173U (en) | Video signal dropout compensation device | |
| JPS58116370U (en) | Video signal AGC circuit | |
| JPS5854180U (en) | Video disc player dropout compensation circuit | |
| JPS583678U (en) | noise reduction circuit | |
| JPS5850765U (en) | Vertical contour correction circuit | |
| JPS6175678U (en) | ||
| JPS60186767U (en) | Video playback circuit | |
| JPS6133231U (en) | Head switching signal generation circuit | |
| JPS60705U (en) | Reproduction characteristic switching circuit | |
| JPS6055171U (en) | Horizontal synchronization signal generation circuit | |
| JPS58123673U (en) | Screen distortion correction circuit for television receivers | |
| JPS58125470U (en) | PCM recording and playback device for VTR | |
| JPS58172275U (en) | Dropout compensation circuit | |
| JPS6019276U (en) | Dropout compensation circuit |