JPS604083U - DC fixed circuit for color difference signal modulation circuit - Google Patents
DC fixed circuit for color difference signal modulation circuitInfo
- Publication number
- JPS604083U JPS604083U JP9585683U JP9585683U JPS604083U JP S604083 U JPS604083 U JP S604083U JP 9585683 U JP9585683 U JP 9585683U JP 9585683 U JP9585683 U JP 9585683U JP S604083 U JPS604083 U JP S604083U
- Authority
- JP
- Japan
- Prior art keywords
- color difference
- difference signal
- circuit
- signal modulation
- hold
- 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
- Processing Of Color Television Signals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の色差信号変調回路を示す回路図、第２図
は第１図の動作を説明する信号波形図、第３図は本考案
による色差信号変調回路における直流固定回路の一実施
例を示す回路図である。
ＴＲ３〜ＴＲ１０・・・・・・色差信号変調回路、ＳＷ
・・・・・・スイッチ回路、ＣＰ・・・・・・クランプ
パルス入力端、ＤＡ・・・・・・誤差増幅器。Fig. 1 is a circuit diagram showing a conventional color difference signal modulation circuit, Fig. 2 is a signal waveform diagram explaining the operation of Fig. 1, and Fig. 3 is an example of a DC fixed circuit in the color difference signal modulation circuit according to the present invention. FIG. TR3 to TR10...Color difference signal modulation circuit, SW
...Switch circuit, CP...Clamp pulse input terminal, DA...Error amplifier.
Claims (2)
、そのホールド電位を基準電位と比較し、この比較によ
る差に応じて前記ホールド電位が基準電位に等しくなる
ようにフィードバックを行い色差信号変調器の人力色差
信号の直流固定を行−うことを特徴とする色差信号変調
回路の直流固定回路。(1) Sample and hold the retrace period of the human color difference signal, compare the hold potential with a reference potential, and perform feedback so that the hold potential is equal to the reference potential according to the difference resulting from this comparison to modulate the color difference signal. 1. A DC fixing circuit for a color difference signal modulation circuit, characterized in that it fixes a manually input color difference signal of a color difference signal to a direct current.
てサンプルホールドを行うことを特徴とする実用新案登
録請求の範囲第一項記載の色差信号変調回路の直流固定
回路。(2) A DC fixing circuit for a color difference signal modulation circuit according to claim 1 of the utility model registration, characterized in that sample and hold is performed using a switch element made of a field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9585683U JPS604083U (en) | 1983-06-23 | 1983-06-23 | DC fixed circuit for color difference signal modulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9585683U JPS604083U (en) | 1983-06-23 | 1983-06-23 | DC fixed circuit for color difference signal modulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS604083U true JPS604083U (en) | 1985-01-12 |
Family
ID=30228715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9585683U Pending JPS604083U (en) | 1983-06-23 | 1983-06-23 | DC fixed circuit for color difference signal modulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604083U (en) |
-
1983
- 1983-06-23 JP JP9585683U patent/JPS604083U/en active Pending
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