JPS6416772U - - Google Patents
Info
- Publication number
- JPS6416772U JPS6416772U JP11097587U JP11097587U JPS6416772U JP S6416772 U JPS6416772 U JP S6416772U JP 11097587 U JP11097587 U JP 11097587U JP 11097587 U JP11097587 U JP 11097587U JP S6416772 U JPS6416772 U JP S6416772U
- Authority
- JP
- Japan
- Prior art keywords
- gate pulse
- burst gate
- burst
- signal
- 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.)
- Granted
Links
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案のバーストゲートパルス作成回
路を使用した色同期系の概略構成を示すブロツク
図、第２図はその要部の信号波形図である。
５…可変周波数発振器、７…同期／非同期検出
回路、９…ゲートパルス切換回路、１０…パルス
作成回路。
FIG. 1 is a block diagram showing a schematic configuration of a color synchronization system using the burst gate pulse generation circuit of the present invention, and FIG. 2 is a signal waveform diagram of the main part thereof. 5... Variable frequency oscillator, 7... Synchronous/asynchronous detection circuit, 9... Gate pulse switching circuit, 10... Pulse creation circuit.
Claims (1)
御されるカラーサブキヤリア信号発生用の可変周
波数発振器の出力を分周してバーストゲートパル
スを作成するようにした回路に於いて、前記発振
器の同期／非同期状態を検出し、その検出出力を
得て同期状態時に前記バーストゲートパルスのパ
ルス幅を縮小するよう切換えることを特徴とする
バーストゲートパルス作成回路。 In a circuit in which a burst gate pulse is created by dividing the output of a variable frequency oscillator for generating a color subcarrier signal which is PLL controlled using a color burst signal as a reference signal, the synchronous/asynchronous state of the oscillator is determined. A burst gate pulse generation circuit characterized in that the circuit detects the burst gate pulse, obtains the detection output, and switches to reduce the pulse width of the burst gate pulse in a synchronized state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097587U JPH0644216Y2 (en) | 1987-07-20 | 1987-07-20 | Burst gate pulse creation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097587U JPH0644216Y2 (en) | 1987-07-20 | 1987-07-20 | Burst gate pulse creation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6416772U true JPS6416772U (en) | 1989-01-27 |
| JPH0644216Y2 JPH0644216Y2 (en) | 1994-11-14 |
Family
ID=31348621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11097587U Expired - Lifetime JPH0644216Y2 (en) | 1987-07-20 | 1987-07-20 | Burst gate pulse creation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644216Y2 (en) |
-
1987
- 1987-07-20 JP JP11097587U patent/JPH0644216Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644216Y2 (en) | 1994-11-14 |