JPS6338483U - - Google Patents
Info
- Publication number
- JPS6338483U JPS6338483U JP11214587U JP11214587U JPS6338483U JP S6338483 U JPS6338483 U JP S6338483U JP 11214587 U JP11214587 U JP 11214587U JP 11214587 U JP11214587 U JP 11214587U JP S6338483 U JPS6338483 U JP S6338483U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- horizontal synchronization
- synchronization signal
- color burst
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Synchronizing For Television (AREA)
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の実施例を示すブロツク図、第
２図は第１図の要部の出力波形図、第３図は従来
例を示すブロツク図である。
なお図面に用いた符号において、４……同期レ
ベル検出回路、５……基準レベル切換え回路、１
０……コンパレータ、１２……ゲートパルス発生
回路、である。
FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an output waveform diagram of the main part of FIG. 1, and FIG. 3 is a block diagram showing a conventional example. In addition, in the symbols used in the drawings, 4... synchronous level detection circuit, 5... reference level switching circuit, 1
0... comparator, 12... gate pulse generation circuit.
Claims (1)
回路と、 上記ビデオ信号の水平同期信号レベルを検出す
る水平同期信号レベル検出回路と、 上記検出された水平同期信号レベルをこの水平
同期信号の基準時点に対応する所定レベルに変換
する回路と、 上記水平同期信号の期間とカラーバースト信号
の期間とに対応したタイミングにおいて上記基準
信号のレベルを上記所定レベルと上記カラーバー
スト信号を検出するレベルとに切り換える手段と
を設け、 上記水平同期信号とカラーバースト信号とを共
通の上記比較回路にて検出することを特徴とする
水平同期信号及びカラーバースト信号の検出回路
。[Claims for Utility Model Registration] A comparison circuit that compares the levels of a video signal and a reference signal; A horizontal synchronization signal level detection circuit that detects the horizontal synchronization signal level of the video signal; A horizontal synchronization signal level detection circuit that detects the horizontal synchronization signal level of the video signal; a circuit that converts the level of the reference signal to the predetermined level corresponding to the reference time of the horizontal synchronization signal and the color burst signal at a timing corresponding to the period of the horizontal synchronization signal and the period of the color burst signal; A detecting circuit for a horizontal synchronizing signal and a color burst signal, characterized in that the horizontal synchronizing signal and the color burst signal are detected by the common comparison circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11214587U JPS6349014Y2 (en) | 1987-07-22 | 1987-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11214587U JPS6349014Y2 (en) | 1987-07-22 | 1987-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6338483U true JPS6338483U (en) | 1988-03-12 |
| JPS6349014Y2 JPS6349014Y2 (en) | 1988-12-16 |
Family
ID=30992739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11214587U Expired JPS6349014Y2 (en) | 1987-07-22 | 1987-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6349014Y2 (en) |
-
1987
- 1987-07-22 JP JP11214587U patent/JPS6349014Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6349014Y2 (en) | 1988-12-16 |