JPS62173884U - - Google Patents
Info
- Publication number
- JPS62173884U JPS62173884U JP6076786U JP6076786U JPS62173884U JP S62173884 U JPS62173884 U JP S62173884U JP 6076786 U JP6076786 U JP 6076786U JP 6076786 U JP6076786 U JP 6076786U JP S62173884 U JPS62173884 U JP S62173884U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- inverting
- video
- dropout
- dropout detection
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第１図ないし第３図は本考案の実施例に係り、
第１図はＶＴＲのノイズ除去回路のブロツク回路
図、第２図は要部の具体的な回路図、第３図は動
作説明に供するタイムチヤートである。
１ａ……ドロツプアウト検出回路、２……復調
器、６……反転回路、７……ミキシング回路、８
……スイツチ、ＰＤＯ……ドロツプアウト検出パ
ルス、Ｎ……パルス状ノイズ、Ｎ……反転信号。
Figures 1 to 3 relate to embodiments of the present invention,
FIG. 1 is a block circuit diagram of a VTR noise removal circuit, FIG. 2 is a detailed circuit diagram of the main part, and FIG. 3 is a time chart for explaining the operation. 1a...Dropout detection circuit, 2...Demodulator, 6...Inverting circuit, 7...Mixing circuit, 8
...Switch, PDO...Dropout detection pulse, N...Pulse noise, N...Inverted signal.
Claims (1)
るドロツプアウト検出回路と、 前記ビデオＦＭ輝度信号を復調したビデオ出力
信号の反転回路と、 この反転回路による反転信号と前記ビデオ出力
信号とを重畳するミキシング回路と、 前記反転回路と前記ミキシング回路との間に挿
入され、前記ドロツプアウト検出回路からのドロ
ツプアウト検出パルスによつてこの反転回路とミ
キシング回路とを接続するスイツチ とを備えたＶＴＲのノイズ除去回路。[Claims for Utility Model Registration] A dropout detection circuit for detecting a dropout of a video FM luminance signal, an inverting circuit for a video output signal that demodulates the video FM luminance signal, and an inverting signal by the inverting circuit and the video output signal. and a switch inserted between the inverting circuit and the mixing circuit to connect the inverting circuit and the mixing circuit in response to a dropout detection pulse from the dropout detection circuit. Noise removal circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6076786U JPS62173884U (en) | 1986-04-22 | 1986-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6076786U JPS62173884U (en) | 1986-04-22 | 1986-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62173884U true JPS62173884U (en) | 1987-11-05 |
Family
ID=30893479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6076786U Pending JPS62173884U (en) | 1986-04-22 | 1986-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62173884U (en) |
-
1986
- 1986-04-22 JP JP6076786U patent/JPS62173884U/ja active Pending
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