JPS6455772U - - Google Patents
Info
- Publication number
- JPS6455772U JPS6455772U JP15025287U JP15025287U JPS6455772U JP S6455772 U JPS6455772 U JP S6455772U JP 15025287 U JP15025287 U JP 15025287U JP 15025287 U JP15025287 U JP 15025287U JP S6455772 U JPS6455772 U JP S6455772U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- synchronization
- pulse width
- output
- selection circuit
- 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
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Synchronizing For Television (AREA)
Description
第１図はこの考案に係る同期信号再生装置の一
例の構成を示すブロツク図、第２図はこの考案に
係る同期信号再生装置の各部分の出力波形を示す
図、第３図はこの考案に係る他の実施例における
同期信号再生装置の各部分の出力波形を示す図、
第４図は従来の同期信号再生装置の構成を示す図
、第５図は従来の同期信号再生装置の各部分の出
力波形を示す図である。
１……同期信号再生装置、２……ベースバンド
信号入力端子、３……同期分離回路、４……パル
ス幅選別回路、５……疑似同期発生回路、６……
アンドゲート、７……同期信号出力端子。
FIG. 1 is a block diagram showing the configuration of an example of a synchronization signal reproducing device according to this invention, FIG. 2 is a diagram showing output waveforms of each part of the synchronization signal reproducing device according to this invention, and FIG. A diagram showing output waveforms of each part of the synchronization signal reproducing device in another embodiment,
FIG. 4 is a diagram showing the configuration of a conventional synchronizing signal reproducing device, and FIG. 5 is a diagram showing output waveforms of each part of the conventional synchronizing signal reproducing device. DESCRIPTION OF SYMBOLS 1... Synchronization signal reproducing device, 2... Baseband signal input terminal, 3... Synchronization separation circuit, 4... Pulse width selection circuit, 5... Pseudo synchronization generation circuit, 6...
AND gate, 7... synchronous signal output terminal.
Claims (1)
ス幅より短かいパルス幅の信号を選別除去するパ
ルス幅選別回路と、 上記パルス幅選別回路の出力でカウンタをリセ
ツトし、水平同期周期と同じ周期、同じ位相のパ
ルスを発生させる疑似同期発生回路とを具備し、 上記パルス幅選別回路の出力信号と、上記疑似
同期発生回路の疑似同期信号のアンド若しくはオ
ア出力が出力同期信号として使用されるようにし
たことを特徴とする同期信号再生装置。[Claims for Utility Model Registration] A pulse width selection circuit that selects and removes a signal with a pulse width shorter than the synchronization pulse width from a synchronization signal separated from an input signal; and a counter reset by the output of the pulse width selection circuit; It is equipped with a pseudo synchronization generation circuit that generates a pulse with the same period and the same phase as the horizontal synchronization period, and the AND or OR output of the output signal of the pulse width selection circuit and the pseudo synchronization signal of the pseudo synchronization generation circuit is output synchronization. A synchronous signal reproducing device characterized in that it is used as a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15025287U JPS6455772U (en) | 1987-09-30 | 1987-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15025287U JPS6455772U (en) | 1987-09-30 | 1987-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6455772U true JPS6455772U (en) | 1989-04-06 |
Family
ID=31423227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15025287U Pending JPS6455772U (en) | 1987-09-30 | 1987-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6455772U (en) |
-
1987
- 1987-09-30 JP JP15025287U patent/JPS6455772U/ja active Pending