JPS59147379U - PAL color television receiver color signal circuit - Google Patents
PAL color television receiver color signal circuitInfo
- Publication number
- JPS59147379U JPS59147379U JP2121384U JP2121384U JPS59147379U JP S59147379 U JPS59147379 U JP S59147379U JP 2121384 U JP2121384 U JP 2121384U JP 2121384 U JP2121384 U JP 2121384U JP S59147379 U JPS59147379 U JP S59147379U
- Authority
- JP
- Japan
- Prior art keywords
- color
- pal
- line
- signal
- phase
- 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ＰＡＬカラーテレビジョン受像機の色信
号回路を示す回路図である。第２図は本考案を実施した
ＰＡＬカラーテレビジョン受像機の色信号回路の回路図
であり、第３図はその動作説明図である。
１・・・入力端子、２・・・帯域増幅器、３・・・１ラ
イン遅延線、４・・・加算器、５・・・減算器、８・・
・Ｂ−Ｙ復調器、９・・・Ｒ−Ｙ復調器、１０・・・パ
ーストゲート、１２・・・位相検波器、１３・・・副搬
送波発振器、１７・・・ＰＡＬスイッチ、１９・・・フ
リップフロップ、２０・・・ＩＤ回路、２１．２２・・
・２つの線路、２４・・・スイッチ手段、２６・・・位
相検波器、２７・・・積分回路。FIG. 1 is a circuit diagram showing a color signal circuit of a conventional PAL color television receiver. FIG. 2 is a circuit diagram of a color signal circuit of a PAL color television receiver embodying the present invention, and FIG. 3 is an explanatory diagram of its operation. 1... Input terminal, 2... Bandwidth amplifier, 3... 1-line delay line, 4... Adder, 5... Subtractor, 8...
- B-Y demodulator, 9... R-Y demodulator, 10... Burst gate, 12... Phase detector, 13... Subcarrier oscillator, 17... PAL switch, 19...・Flip-flop, 20...ID circuit, 21.22...
- Two lines, 24... switch means, 26... phase detector, 27... integrating circuit.
Claims (2)
調し、その一方の変調軸が１ラインごとに１８０°反転
する副搬送波抑圧搬送色信号と前記一方の変調軸の反転
に同期して位相がスイングするバースト信号が送られて
くるカラーテレビジョン信号中の前記反転する変調軸の
色信号を復調する復調器に副搬送波発振器からの信号を
１ラインごとに１８０°切換えて供給するためのＰＡＬ
スイッチと、前記ＰＡＬスイッチを駆動するため出力が
水平パルスにより１ラインごとに反転するフリップフロ
ップとを有するＰＡＬカラーテレビジョン受像機の色信
号回路において、前記パーストゲートの出力側に接続さ
れた互いに１８０６位相の異なる２つの線路と、前記フ
リップフロップの出力パルスにより前記２つの線路の信
号を１ラインごとに交互に取り出すように切換わるスイ
ッチング手段と、前記スイッチ手段で取り出され、たバ
ースト信号を上記副搬送波発振器からの信号で位相検波
する位相検波器と、前記位相検波器の検波出力を平滑す
る積分回路とを備え、前記積分回路の出力によって上記
フリップフロップの反転モードを制御してなるＰＡＬカ
ラーテレビジョン受像機の色信号回路。(1) A subcarrier is quadrature-modulated by two color signals, and one of the modulation axes is inverted by 180 degrees for each line.The subcarrier suppressed carrier color signal and the phase swings in synchronization with the inversion of one of the modulation axes. PAL for supplying a signal from a subcarrier oscillator by switching 180 degrees for each line to a demodulator that demodulates the color signal of the inverted modulation axis in a color television signal to which a burst signal is sent.
In a color signal circuit of a PAL color television receiver having a switch and a flip-flop whose output is inverted line by line by a horizontal pulse to drive the PAL switch, 1806 two lines having different phases; a switching means that switches to alternately take out signals from the two lines line by line according to the output pulse of the flip-flop; A PAL color television comprising a phase detector that performs phase detection using a signal from a carrier wave oscillator, and an integrating circuit that smoothes the detection output of the phase detector, and in which the inversion mode of the flip-flop is controlled by the output of the integrating circuit. color signal circuit of John's receiver.
位相位置であり、この副搬送波を９０°移相器を通して
前記移送検波器に加えるようにしたことを特徴とする実
用新案登録請求の範囲第１項記載のＰＡＬカラーテレビ
ジョン受像機の色信号回路。(2) Registration of a utility model characterized in that the output phase of the subcarrier oscillator is at a phase position of -(B-Y), and this subcarrier is applied to the transfer detector through a 90° phase shifter. A color signal circuit for a PAL color television receiver according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2121384U JPS59147379U (en) | 1984-02-16 | 1984-02-16 | PAL color television receiver color signal circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2121384U JPS59147379U (en) | 1984-02-16 | 1984-02-16 | PAL color television receiver color signal circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59147379U true JPS59147379U (en) | 1984-10-02 |
Family
ID=30152343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2121384U Pending JPS59147379U (en) | 1984-02-16 | 1984-02-16 | PAL color television receiver color signal circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147379U (en) |
-
1984
- 1984-02-16 JP JP2121384U patent/JPS59147379U/en active Pending
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