JPS61195170U - - Google Patents
Info
- Publication number
- JPS61195170U JPS61195170U JP6595285U JP6595285U JPS61195170U JP S61195170 U JPS61195170 U JP S61195170U JP 6595285 U JP6595285 U JP 6595285U JP 6595285 U JP6595285 U JP 6595285U JP S61195170 U JPS61195170 U JP S61195170U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- output
- emphasis
- dropout
- signal
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003111 delayed effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案の一実施例を示す図である。第
２図は従来例を示す図である。第３図は第２図の
各部の波形図である。
１２……ドロツプアウト検出回路（ドロツプア
ウト検出手段）、１６……ＦＭ復調回路（復調手
段）、２２……第１クランプ回路（第１クランプ
手段）、２４……スイツチ回路（スイツチ手段）
、２８……１Ｈ遅延線（遅延手段）、３２……第
２クランプ回路（第２クランプ手段）、３４……
出力端子（出力手段）、４２……第１デイエンフ
アシス回路（第１デイエンフアシス手段）、４４
……第２デイエンフアシス回路（第２デイエンフ
アシス手段）。
FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing a conventional example. FIG. 3 is a waveform diagram of each part of FIG. 2. 12... Dropout detection circuit (dropout detection means), 16... FM demodulation circuit (demodulation means), 22... First clamp circuit (first clamp means), 24... Switch circuit (switch means)
, 28... 1H delay line (delay means), 32... second clamp circuit (second clamp means), 34...
Output terminal (output means), 42...first de-emphasis circuit (first de-emphasis means), 44
...Second de-emphasis circuit (second de-emphasis means).
Claims (1)
ツプアウト検出信号を出力するドロツプアウト検
出手段と、 前記ＦＭ映像信号を復調する復調手段と、 この復調手段からの映像信号をクランプする第
１クランプ手段と、 前記ドロツプアウト検出信号により前記第１ク
ランプ手段の出力映像信号と遅延映像信号とを選
択導出するスイツチ手段と、 このスイツチ手段の出力映像信号を遅延する遅
延手段と、 この遅延手段からの出力映像信号をクランプし
て前記遅延映像信号を作成する第２クランプ手段
と、 前記遅延手段の入力端の映像信号を出力する出
力手段とを、 備えるドロツプアウト補償回路に於いて、 前記復調手段と前記第１クランプ手段との間に
設けられ、少なくとも映像信号のクランプ基準信
号部分をデイエンフアシスする第１デイエンフア
シス手段と、 前記出力手段と前記入力端との間に設けられ前
記第１デイエンフアシス手段でデイエンフアシス
されていない映像信号部分をデイエンフアシスす
る第２デイエンフアシス手段とを、 備えることを特徴とするドロツプアウト補償回
路。[Claims for Utility Model Registration] Dropout detection means for detecting dropout of an FM video signal and outputting a dropout detection signal; demodulation means for demodulating the FM video signal; a switch means for selectively deriving the output video signal of the first clamp means and a delayed video signal based on the dropout detection signal; a delay means for delaying the output video signal of the switch means; A dropout compensation circuit comprising: second clamping means for clamping the output video signal of the output video signal to create the delayed video signal; and output means for outputting the video signal at the input terminal of the delay means, the demodulation means and a first de-emphasis means provided between the first clamp means and for de-emphasizing at least a clamped reference signal portion of the video signal; and a first de-emphasis means provided between the output means and the input end and de-emphasized by the first de-emphasis means. and a second de-emphasis means for de-emphasizing a portion of the video signal that is not included in the drop-out compensation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6595285U JPH051189Y2 (en) | 1985-05-02 | 1985-05-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6595285U JPH051189Y2 (en) | 1985-05-02 | 1985-05-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61195170U true JPS61195170U (en) | 1986-12-05 |
| JPH051189Y2 JPH051189Y2 (en) | 1993-01-13 |
Family
ID=30598402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6595285U Expired - Lifetime JPH051189Y2 (en) | 1985-05-02 | 1985-05-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051189Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245886A (en) * | 1986-04-18 | 1987-10-27 | Sony Corp | Dropout compensation device |
-
1985
- 1985-05-02 JP JP6595285U patent/JPH051189Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245886A (en) * | 1986-04-18 | 1987-10-27 | Sony Corp | Dropout compensation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051189Y2 (en) | 1993-01-13 |
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