JPH0444784U - - Google Patents
Info
- Publication number
- JPH0444784U JPH0444784U JP8629090U JP8629090U JPH0444784U JP H0444784 U JPH0444784 U JP H0444784U JP 8629090 U JP8629090 U JP 8629090U JP 8629090 U JP8629090 U JP 8629090U JP H0444784 U JPH0444784 U JP H0444784U
- Authority
- JP
- Japan
- Prior art keywords
- output
- delay line
- trap
- color subcarrier
- bandpass filter
- 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 4
- 238000010586 diagram Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Processing Of Color Television Signals (AREA)
Description
図は本考案の一実施例を示し、第１図はＹ／Ｃ
分離回路のブロツク図、第２図Ａ乃至第２図Ｇは
夫々Ｙ／Ｃ分離回路各部の信号波形及び周波数ス
ペクトラムを示すグラフである。
１……Ｙ／Ｃ分離回路、３……ＬＣトラツプ、
５……デイレイライン、８……３．５８ＭHzバン
ドパスフイルタ。
The figure shows one embodiment of the present invention, and FIG. 1 shows Y/C
The block diagrams of the separation circuit, FIGS. 2A to 2G, are graphs showing signal waveforms and frequency spectra of various parts of the Y/C separation circuit, respectively. 1...Y/C separation circuit, 3...LC trap,
5...Delay line, 8...3.58MHz band pass filter.
Claims (1)
ルに減衰する３．５８ＭHzトラツプと、デイレイ
ラインと、３．５８ＭHzバンドパスフイルタとか
ら構成し、前記デイレイラインに逆位相で入力し
た画像信号中の色副搬送波を前記トラツプ出力中
の色副搬送波と同一レベルに増幅し、前記トラツ
プ出力からデイレイライン出力を減算して輝度信
号を出力し、一方、前記トラツプ出力にデイレイ
ライン出力を加算し、３．５８ＭHzバンドパスフ
イルタを通過させて色副搬送波を出力するＹ／Ｃ
分離回路。 It consists of a 3.58 MHz trap that attenuates the color subcarrier in the NTSC image signal to 1/2 the level, a delay line, and a 3.58 MHz bandpass filter, and the image signal that is input in opposite phase to the delay line. amplifying the color subcarrier of to the same level as the color subcarrier in the trap output, subtracting the delay line output from the trap output to output a luminance signal, while adding the delay line output to the trap output, Y/C that passes through a 3.58MHz bandpass filter and outputs the color subcarrier.
Separation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8629090U JPH0444784U (en) | 1990-08-17 | 1990-08-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8629090U JPH0444784U (en) | 1990-08-17 | 1990-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444784U true JPH0444784U (en) | 1992-04-16 |
Family
ID=31817887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8629090U Pending JPH0444784U (en) | 1990-08-17 | 1990-08-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444784U (en) |
-
1990
- 1990-08-17 JP JP8629090U patent/JPH0444784U/ja active Pending
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