JPH0260373U - - Google Patents
Info
- Publication number
- JPH0260373U JPH0260373U JP13883288U JP13883288U JPH0260373U JP H0260373 U JPH0260373 U JP H0260373U JP 13883288 U JP13883288 U JP 13883288U JP 13883288 U JP13883288 U JP 13883288U JP H0260373 U JPH0260373 U JP H0260373U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- detection
- video
- detects
- peak
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は本考案を実施した周波数特性補正回路
のブロツク図であり、第２図はその説明図である
。第３図は従来例のブロツク図である。
３……ＩＦ回路、１７……同期信号振幅レベル
検出回路、２１……クランプ回路、２２……ピー
クホールド回路、２４……比較回路、２５……水
平同期信号、２６……カラーバースト信号、Ａ…
…水平同期信号の振幅、Ｂ……ピーク・ツウ・ピ
ーク。
FIG. 1 is a block diagram of a frequency characteristic correction circuit embodying the present invention, and FIG. 2 is an explanatory diagram thereof. FIG. 3 is a block diagram of a conventional example. 3...IF circuit, 17...Sync signal amplitude level detection circuit, 21...Clamp circuit, 22...Peak hold circuit, 24...Comparison circuit, 25...Horizontal synchronization signal, 26...Color burst signal, A …
...Amplitude of horizontal synchronization signal, B...Peak-to-peak.
Claims (1)
映像信号に含まれる同期信号の振幅レベルを検出
する第１検出回路と、カラーバースト信号のピー
ク・ツウ・ピークのレベルを検出する第２検出回
路と、前記第１、第２検出回路の出力を比較する
比較回路と、前記比較回路の出力により映像検波
後の周波数特性を補正するように働く中間周波回
路と、から成る周波数特性補正回路。 a first detection circuit that detects the amplitude level of a synchronization signal included in a video signal obtained by video-detecting a received television signal; a second detection circuit that detects a peak-to-peak level of a color burst signal; A frequency characteristic correction circuit comprising a comparison circuit that compares outputs of the first and second detection circuits, and an intermediate frequency circuit that operates to correct frequency characteristics after video detection using the output of the comparison circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13883288U JPH0260373U (en) | 1988-10-25 | 1988-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13883288U JPH0260373U (en) | 1988-10-25 | 1988-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0260373U true JPH0260373U (en) | 1990-05-02 |
Family
ID=31401538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13883288U Pending JPH0260373U (en) | 1988-10-25 | 1988-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0260373U (en) |
-
1988
- 1988-10-25 JP JP13883288U patent/JPH0260373U/ja active Pending