JPS6399471U - - Google Patents
Info
- Publication number
- JPS6399471U JPS6399471U JP19517986U JP19517986U JPS6399471U JP S6399471 U JPS6399471 U JP S6399471U JP 19517986 U JP19517986 U JP 19517986U JP 19517986 U JP19517986 U JP 19517986U JP S6399471 U JPS6399471 U JP S6399471U
- Authority
- JP
- Japan
- Prior art keywords
- active element
- signal input
- input terminal
- mute
- level
- 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
- Picture Signal Circuits (AREA)
Description
第１図及び第２図は本考案の実施例を示し、第
１図は回路図、第２図は入力波形図である。
１…信号入力端、２…外部輝度信号入力端、３
…能動素子としてのトランジスタ、４…ＣＲＴ増
幅器、５…バイアス可変回路。
1 and 2 show an embodiment of the present invention, with FIG. 1 being a circuit diagram and FIG. 2 being an input waveform diagram. 1... Signal input terminal, 2... External brightness signal input terminal, 3
...Transistor as an active element, 4.CRT amplifier, 5.Variable bias circuit.
Claims (1)
外部輝度信号入力端の信号レベルを制御する能動
素子と、ミユートトリガ用の信号入力端と、この
信号入力端と前記能動素子の制御端との間に介挿
されミユート信号の有無に応じて前記能動素子の
バイアスを可変するバイアス可変回路とを有し、
前記能動素子によりＣＲＴ増幅器の輝度レベルを
制御せしめ、輝度信号レベル及びミユートトリガ
信号レベルの夫々の変動に応じて白ピークリミツ
タ動作と画像ミユーテイング動作とがなされるよ
うにしたことを特徴とする画像ミユーテイング回
路。 (2) 前記能動素子はトランジスタであるととも
にそのエミツタ側がＣＲＴ増幅器の輝度信号入力
部に接続されていることを特徴とする実用新案登
録請求の範囲第１項記載の画像ミユーテイング回
路。[Claims for Utility Model Registration] (1) An active element connected to a luminance signal input section of a CRT amplifier and controlling the signal level of an external luminance signal input terminal, a signal input terminal for a mute trigger, this signal input terminal and the above-mentioned a bias variable circuit interposed between a control end of the active element and varying the bias of the active element depending on the presence or absence of a mute signal;
An image muting circuit characterized in that the brightness level of the CRT amplifier is controlled by the active element, and a white peak limiter operation and an image muting operation are performed in response to fluctuations in the brightness signal level and the mute trigger signal level. (2) The image muting circuit according to claim 1, wherein the active element is a transistor and its emitter side is connected to a luminance signal input section of a CRT amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19517986U JPS6399471U (en) | 1986-12-18 | 1986-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19517986U JPS6399471U (en) | 1986-12-18 | 1986-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6399471U true JPS6399471U (en) | 1988-06-28 |
Family
ID=31152833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19517986U Pending JPS6399471U (en) | 1986-12-18 | 1986-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6399471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0243065U (en) * | 1988-09-17 | 1990-03-26 |
-
1986
- 1986-12-18 JP JP19517986U patent/JPS6399471U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0243065U (en) * | 1988-09-17 | 1990-03-26 |
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