JPH0247885U - - Google Patents
Info
- Publication number
- JPH0247885U JPH0247885U JP12631788U JP12631788U JPH0247885U JP H0247885 U JPH0247885 U JP H0247885U JP 12631788 U JP12631788 U JP 12631788U JP 12631788 U JP12631788 U JP 12631788U JP H0247885 U JPH0247885 U JP H0247885U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- color
- circuit
- receives
- video
- 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
- 230000003321 amplification Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案によるテレビジヨン信号処理回
路の一実施例を示すブロツク図、第２図は上記実
施例の動作を説明するための特性図、第３図は従
来のテレビジヨン信号処理回路のブロツク図、第
４図は従来例の動作を説明するための特性図であ
る。
１……アンテナ、２……チユーナー、３……映
像中間周波増幅回路、４……音声中間周波増幅回
路、５……色中間周波増幅回路、６……映像検波
回路、７……映像信号処理回路、８……同期信号
処理回路、９……音声搬送波検波回路、１０……
音声信号処理回路、１１……色副搬送波検波回路
、１２……色信号処理回路。
FIG. 1 is a block diagram showing an embodiment of a television signal processing circuit according to the present invention, FIG. 2 is a characteristic diagram for explaining the operation of the above embodiment, and FIG. 3 is a diagram of a conventional television signal processing circuit. The block diagram in FIG. 4 is a characteristic diagram for explaining the operation of the conventional example. 1...Antenna, 2...Tuner, 3...Video intermediate frequency amplification circuit, 4...Audio intermediate frequency amplification circuit, 5...Color intermediate frequency amplification circuit, 6...Video detection circuit, 7...Video signal processing Circuit, 8... Synchronization signal processing circuit, 9... Audio carrier detection circuit, 10...
Audio signal processing circuit, 11... Color subcarrier detection circuit, 12... Color signal processing circuit.
Claims (1)
ユーナーからの中間周波信号が入力され映像中間
周波信号を増幅する映像中間周波増幅回路と、こ
の映像中間周波増幅回路からの増幅出力が入力さ
れ映像搬送波を検波するための映像検波回路と、
上記チユーナーからの中間周波信号が入力され音
声中間周波信号を増幅する音声中間周波増幅回路
と、この音声中間周波増幅回路からの増幅出力が
入力され音声搬送波を検波するための音声搬送検
波回路と、上記チユーナーからの中間周波信号が
入力され色中間周波信号を増幅する色中間周波増
幅回路と、この色中間周波増幅回路からの増幅出
力が入力され色副搬送波を検波するための色副搬
送波検波回路とを有し、上記色副搬送波検波回路
の出力周波数特性が色副搬送波周波数帯域と同一
になるように上記色中間周波増幅回路の周波数特
性が定められているとともに、上記色副搬送波検
波回路の検波出力が入力される色信号処理回路の
入力段の周波数特性が同様なバンドパス特性に定
められていることを特徴とするテレビジヨン信号
処理回路。 A tuner that outputs an intermediate frequency signal, a video intermediate frequency amplification circuit that receives the intermediate frequency signal from the tuner and amplifies the video intermediate frequency signal, and a video intermediate frequency amplification circuit that receives the amplified output from the video intermediate frequency amplification circuit and detects the video carrier wave. A video detection circuit for
an audio intermediate frequency amplifier circuit that receives an intermediate frequency signal from the tuner and amplifies the audio intermediate frequency signal; an audio carrier detection circuit that receives an amplified output from the audio intermediate frequency amplifier circuit and detects an audio carrier wave; A color intermediate frequency amplification circuit receives the intermediate frequency signal from the tuner and amplifies the color intermediate frequency signal, and a color subcarrier detection circuit receives the amplified output from the color intermediate frequency amplifier circuit and detects the color subcarrier. The frequency characteristics of the color intermediate frequency amplification circuit are determined such that the output frequency characteristics of the color subcarrier detection circuit are the same as the color subcarrier frequency band, and the frequency characteristics of the color intermediate frequency amplification circuit are determined such that the output frequency characteristics of the color subcarrier detection circuit A television signal processing circuit characterized in that frequency characteristics of an input stage of a color signal processing circuit to which a detection output is input are determined to have similar bandpass characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12631788U JPH0247885U (en) | 1988-09-29 | 1988-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12631788U JPH0247885U (en) | 1988-09-29 | 1988-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247885U true JPH0247885U (en) | 1990-04-03 |
Family
ID=31377736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12631788U Pending JPH0247885U (en) | 1988-09-29 | 1988-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247885U (en) |
-
1988
- 1988-09-29 JP JP12631788U patent/JPH0247885U/ja active Pending
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