JPH0188570U - - Google Patents
Info
- Publication number
- JPH0188570U JPH0188570U JP18572487U JP18572487U JPH0188570U JP H0188570 U JPH0188570 U JP H0188570U JP 18572487 U JP18572487 U JP 18572487U JP 18572487 U JP18572487 U JP 18572487U JP H0188570 U JPH0188570 U JP H0188570U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video signal
- baseband video
- filter
- frequency multiplexed
- 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
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
- Details Of Television Systems (AREA)
Description
第１図は本発明の１実施例を示す回路図、第２
図は本発明に用いることのできる信号分離あるい
は合成用フイルタの回路図、第３図は本発明の変
形例の回路図、第４図は従来から用いられている
ビデオ信号用クランプ回路の一例、第５図は同期
信号期間にも連続する周波数多重信号を含む場合
に用いられるビデオ信号用クランプ回路の一例で
ある。
１，１１…信号入力端子、２，１２…信号出力
端子、３，８，１６，４１…バツフア増幅回路、
４…ホールド用コンデンサ、５…スイツチングト
ランジスタ、６…クランプパルス入力端子、７…
クランプ電位、９…インダクタンス（同調用）、
１０…インダクタンス（同調用）、１３，１８…
帯域フイルタ又は高域フイルタ、１４，１９…帯
域阻止フイルタまたは低域フイルタ、１５…ビデ
オ信号用クランプ回路、１７…信号合成回路、２
１，２２，２３…フイルタ入出力端子、２４，２
５，２６，３２，３３…コンデンサ（フイルター
用）、２７，２８，２９，３９，３１…インダク
タンス（フイルター用）。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing one embodiment of the present invention.
The figure is a circuit diagram of a signal separation or synthesis filter that can be used in the present invention, FIG. 3 is a circuit diagram of a modified example of the present invention, and FIG. 4 is an example of a conventional video signal clamp circuit. FIG. 5 is an example of a video signal clamp circuit used when the synchronizing signal period also includes a continuous frequency multiplexed signal. 1, 11... Signal input terminal, 2, 12... Signal output terminal, 3, 8, 16, 41... Buffer amplifier circuit,
4... Hold capacitor, 5... Switching transistor, 6... Clamp pulse input terminal, 7...
Clamp potential, 9...Inductance (for tuning),
10...Inductance (for tuning), 13, 18...
Bandpass filter or high-pass filter, 14, 19... band rejection filter or low-pass filter, 15... video signal clamp circuit, 17... signal synthesis circuit, 2
1, 22, 23...Filter input/output terminal, 24, 2
5, 26, 32, 33... Capacitor (for filter), 27, 28, 29, 39, 31... Inductance (for filter).
Claims (1)
号の伝送回路において、帯域フイルタまたは高域
フイルタにより周波数多重信号を、帯域阻止フイ
ルタまたは低域フイルタによりベースバンドビデ
オ信号をそれぞれ分離した後、ベースバンドビデ
オ信号のみをクランプし、その後再び、先に分離
した周波数多重信号とベースバンドビデオ信号と
を合成することを特徴とするベースバンドビデオ
信号用クランプ回路。 In a transmission circuit for a baseband video signal accompanied by a frequency multiplexed signal, after separating the frequency multiplexed signal using a bandpass filter or high-pass filter and the baseband video signal using a band-elimination filter or low-pass filter, only the baseband video signal is transmitted. 1. A clamp circuit for a baseband video signal, which clamps the signal, and then again combines the previously separated frequency multiplexed signal and the baseband video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18572487U JPH0188570U (en) | 1987-12-04 | 1987-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18572487U JPH0188570U (en) | 1987-12-04 | 1987-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0188570U true JPH0188570U (en) | 1989-06-12 |
Family
ID=31476994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18572487U Pending JPH0188570U (en) | 1987-12-04 | 1987-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0188570U (en) |
-
1987
- 1987-12-04 JP JP18572487U patent/JPH0188570U/ja active Pending
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