JPS61206371U - - Google Patents
Info
- Publication number
- JPS61206371U JPS61206371U JP9042885U JP9042885U JPS61206371U JP S61206371 U JPS61206371 U JP S61206371U JP 9042885 U JP9042885 U JP 9042885U JP 9042885 U JP9042885 U JP 9042885U JP S61206371 U JPS61206371 U JP S61206371U
- Authority
- JP
- Japan
- Prior art keywords
- video
- synchronization signal
- brightness level
- level
- 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
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図、第３図夫々は本考案回路の各実施例の
回路構成図、第２図は第１図及び第３図に示す回
路各部の一実施例の波形図である。
２…クリツプ回路、６…単安定マルチバイブレ
ータ（モノマルチ）、１０…ＦＭ変調器、Ｄ１…
ダイオード、Ｑ１〜Ｑ３…トランジスタ、Ｒ２〜
Ｒ８…抵抗。
1 and 3 are circuit configuration diagrams of each embodiment of the circuit of the present invention, and FIG. 2 is a waveform diagram of an embodiment of each part of the circuit shown in FIGS. 1 and 3. 2... Clip circuit, 6... Monostable multivibrator (mono multi), 10... FM modulator, D1 ...
Diode, Q 1 to Q 3 ... Transistor, R 2 to
R8 ...Resistance.
Claims (1)
輝度レベル設定回路と、該映像信号の少なくとも
同期信号のシンクチツプクランプレベルを保持さ
せて該同期信号の欠落を防止する同期信号欠落防
止回路とよりなり、該映像信号の水平走査期間の
輝度レベルを一定として映像のミユーテイングを
行なう映像ミユーテイング回路。 comprising a brightness level setting circuit that sets the brightness level of the video signal to a constant level, and a synchronization signal loss prevention circuit that maintains the sync chip clamp level of at least the synchronization signal of the video signal to prevent loss of the synchronization signal, A video muting circuit that performs video muting while keeping the brightness level of the video signal constant during a horizontal scanning period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9042885U JPS61206371U (en) | 1985-06-14 | 1985-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9042885U JPS61206371U (en) | 1985-06-14 | 1985-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61206371U true JPS61206371U (en) | 1986-12-26 |
Family
ID=30645410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9042885U Pending JPS61206371U (en) | 1985-06-14 | 1985-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61206371U (en) |
-
1985
- 1985-06-14 JP JP9042885U patent/JPS61206371U/ja active Pending
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