JPS6438079U - - Google Patents
Info
- Publication number
- JPS6438079U JPS6438079U JP13028787U JP13028787U JPS6438079U JP S6438079 U JPS6438079 U JP S6438079U JP 13028787 U JP13028787 U JP 13028787U JP 13028787 U JP13028787 U JP 13028787U JP S6438079 U JPS6438079 U JP S6438079U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- signal
- color
- time constant
- inactivation
- 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
- 230000002779 inactivation Effects 0.000 claims 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Processing Of Color Television Signals (AREA)
Description
図は本考案を実施したカラーキラー回路を示す
回路図である。
１……検波回路、４……コンパレータ、７……
制御手段、Ｃ２……第２コンデンサ（時定数素子
）。
The figure is a circuit diagram showing a color killer circuit implementing the present invention. 1...Detection circuit, 4...Comparator, 7...
Control means, C 2 . . . second capacitor (time constant element).
Claims (1)
タを介してコンパレータに加えて所定のスレツシ
ヨールドレベルを越えないとき出力端にカラーキ
ラー信号を出力するようにしたカラーキラー回路
において、前記フイルタに作動・不作動が制御さ
る時定数素子と、前記フイルタ通過後の検波出力
に基づいて前記フイルタの時定数を白黒テレビ信
号受信時は小さくカラーテレビ信号受信時は大き
くするように前記時定数素子の作動・不作動を制
御する制御手段とを設けたことを特徴とするカラ
ーキラー回路。 In a color killer circuit that detects a color burst signal, applies its output to a comparator via a filter, and outputs a color killer signal to an output terminal when the signal does not exceed a predetermined threshold level, the filter is actuated. A time constant element whose inactivation is controlled, and a time constant element whose inactivation is controlled so that the time constant of the filter is set to be small when receiving a monochrome television signal and large when receiving a color television signal, based on the detected output after passing through the filter. A color killer circuit characterized by comprising a control means for controlling inactivation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13028787U JPS6438079U (en) | 1987-08-27 | 1987-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13028787U JPS6438079U (en) | 1987-08-27 | 1987-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6438079U true JPS6438079U (en) | 1989-03-07 |
Family
ID=31385318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13028787U Pending JPS6438079U (en) | 1987-08-27 | 1987-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6438079U (en) |
-
1987
- 1987-08-27 JP JP13028787U patent/JPS6438079U/ja active Pending
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