JPS62171285U - - Google Patents
Info
- Publication number
- JPS62171285U JPS62171285U JP5892386U JP5892386U JPS62171285U JP S62171285 U JPS62171285 U JP S62171285U JP 5892386 U JP5892386 U JP 5892386U JP 5892386 U JP5892386 U JP 5892386U JP S62171285 U JPS62171285 U JP S62171285U
- Authority
- JP
- Japan
- Prior art keywords
- color
- switching element
- signal
- input terminal
- processing 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
- 239000002131 composite material Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図及び第２図は本考案の色信号処理回路の
異なる従来例をそれぞれ示す要部回路図、第３図
は従来の色信号処理回路を示す回路図、第４図は
そのバンドパスフイルタの周波数特性を示す図で
ある。
１……色信号処理用ＩＣ、７……バンドパスフ
イルタ、Ｄ１，Ｄ２……スイツチングダイオード
。
1 and 2 are main part circuit diagrams showing different conventional examples of the color signal processing circuit of the present invention, FIG. 3 is a circuit diagram showing a conventional color signal processing circuit, and FIG. 4 is a bandpass filter thereof. It is a figure showing the frequency characteristic of. 1... IC for color signal processing, 7... Band pass filter, D1 , D2 ... Switching diode.
Claims (1)
するバンドパスフイルタ回路にスイツチング素子
を接続し、このスイツチング素子をバースト信号
期間に同期したパルスでオン、オフさせることに
よつて、前記フイルタ回路の周波数特性をバース
ト信号期間に狭帯域状態に切換えるようにしたこ
とを特徴とするカラーテレビジヨン受像機の色信
号処理回路。 (2) 前記スイツチング素子は、バンドパスフイ
ルタ回路に接続されたクロマ信号アンプの入力端
子に接続され、この入力端子に前記パルスが印加
されるように構成されていることを特徴とする登
録請求の範囲第１項記載の色信号処理回路。 (3) 前記クロマ信号アンプはＩＣ内に設けられ
ており、前記入力端子は上記ＩＣの外付け端子で
あることを特徴とする登録請求の範囲第２項記載
の色信号処理回路。[Claims for Utility Model Registration] (1) A switching element is connected to a bandpass filter circuit that separates a chroma signal from a color composite video signal, and the switching element is turned on and off using pulses synchronized with the burst signal period. Accordingly, a color signal processing circuit for a color television receiver is characterized in that the frequency characteristic of the filter circuit is switched to a narrow band state during a burst signal period. (2) The switching element is connected to an input terminal of a chroma signal amplifier connected to a bandpass filter circuit, and the pulse is applied to this input terminal. The color signal processing circuit according to scope 1. (3) The chrominance signal processing circuit according to claim 2, wherein the chroma signal amplifier is provided within an IC, and the input terminal is an external terminal of the IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5892386U JPS62171285U (en) | 1986-04-18 | 1986-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5892386U JPS62171285U (en) | 1986-04-18 | 1986-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62171285U true JPS62171285U (en) | 1987-10-30 |
Family
ID=30889934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5892386U Pending JPS62171285U (en) | 1986-04-18 | 1986-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62171285U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532122B2 (en) * | 1973-05-10 | 1978-01-25 |
-
1986
- 1986-04-18 JP JP5892386U patent/JPS62171285U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532122B2 (en) * | 1973-05-10 | 1978-01-25 |
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