JPH0390189U - - Google Patents
Info
- Publication number
- JPH0390189U JPH0390189U JP15089989U JP15089989U JPH0390189U JP H0390189 U JPH0390189 U JP H0390189U JP 15089989 U JP15089989 U JP 15089989U JP 15089989 U JP15089989 U JP 15089989U JP H0390189 U JPH0390189 U JP H0390189U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- luminance signal
- luminance
- adjustment circuit
- 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
- 238000000926 separation method Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案になる輝度信号／色信号分離回
路の一実施例を示すブロツク図、第２図は第１図
に示す本考案回路中の信号波形を示す図、第３図
は従来の輝度信号／色信号分離回路の一例を示す
ブロツク図、第４図は輝度信号／色信号分離回路
中のＬＰＦの特性曲線図である。
１……入力端子、２……３．５８ＭＨｚバンド
パスフイルタ（ＢＰＦ）、３……輝度信号用遅延
線、４……１Ｈ遅延線（ＣＣＤ）、５……ローパ
スフイルタ（ＬＰＦ）、６，８……減算器、７，
１３……レベル調整用アンプ、９……３逓倍回路
、１０……輝度信号出力端子、１１……色信号出
力端子、１２……位相調整回路。
FIG. 1 is a block diagram showing an embodiment of the luminance signal/chrominance signal separation circuit of the present invention, FIG. 2 is a diagram showing signal waveforms in the circuit of the present invention shown in FIG. 1, and FIG. A block diagram showing an example of a luminance signal/chrominance signal separation circuit, and FIG. 4 is a characteristic curve diagram of the LPF in the luminance signal/chrominance signal separation circuit. 1...Input terminal, 2...3.58MHz band pass filter (BPF), 3...Delay line for luminance signal, 4...1H delay line (CCD), 5...Low pass filter (LPF), 6,8 ...subtractor, 7,
13... Level adjustment amplifier, 9... Triple multiplier circuit, 10... Luminance signal output terminal, 11... Color signal output terminal, 12... Phase adjustment circuit.
Claims (1)
信号で動作する１Ｈ遅延素子を用いて入力複合映
像信号から輝度信号と色信号とを分離して出力す
る輝度信号／色信号分離回路において、 前記クロツク信号の位相を、分離された輝度信
号に混入するクロツク信号成分と逆位相になるよ
う調整する位相調整回路と、 この位相調整回路の出力のレベルを、分離され
た輝度信号に混入するクロツク信号成分と同一レ
ベルになるようレベル調整するレベル調整回路と
を備え、 前記レベル調整回路の出力を、分離された輝度
信号に加えて出力するよう接続構成したことを特
徴とする輝度信号／色信号分離回路。[Claims for Utility Model Registration] Luminance signal/chrominance signal that separates and outputs a luminance signal and chrominance signal from an input composite video signal using a 1H delay element that operates with a high-frequency clock signal that exceeds the upper limit of the luminance signal band. The separation circuit includes a phase adjustment circuit that adjusts the phase of the clock signal so that it has an opposite phase to the clock signal component mixed into the separated luminance signal; and a level adjustment circuit that adjusts the level to be at the same level as a clock signal component mixed into the luminance signal, and the output of the level adjustment circuit is connected to be output in addition to the separated luminance signal. Signal/color signal separation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15089989U JPH0390189U (en) | 1989-12-27 | 1989-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15089989U JPH0390189U (en) | 1989-12-27 | 1989-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390189U true JPH0390189U (en) | 1991-09-13 |
Family
ID=31697231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15089989U Pending JPH0390189U (en) | 1989-12-27 | 1989-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390189U (en) |
-
1989
- 1989-12-27 JP JP15089989U patent/JPH0390189U/ja active Pending
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