JPS62139177U - - Google Patents
Info
- Publication number
- JPS62139177U JPS62139177U JP2550886U JP2550886U JPS62139177U JP S62139177 U JPS62139177 U JP S62139177U JP 2550886 U JP2550886 U JP 2550886U JP 2550886 U JP2550886 U JP 2550886U JP S62139177 U JPS62139177 U JP S62139177U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- additional burst
- burst signal
- time
- base fluctuation
- 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 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案の実施例に係る時間軸変動補正
回路の要部ブロツク図、第２図は第１図の時間軸
変動補正回路のタイミングチヤート、第３図は従
来の時間軸変動補正回路の動作を説明するために
供するブロツク図、第４図は従来の時間軸変動補
正回路のタイミングチヤートである。
１……時間軸変動補正回路、８……ゼロクロス
点検出回路、１０……バンドパスフイルタ。
Fig. 1 is a block diagram of the main parts of a time axis variation correction circuit according to an embodiment of the present invention, Fig. 2 is a timing chart of the time axis variation correction circuit of Fig. 1, and Fig. 3 is a conventional time axis variation correction circuit. FIG. 4 is a timing chart of a conventional time axis fluctuation correction circuit. 1... Time axis fluctuation correction circuit, 8... Zero cross point detection circuit, 10... Band pass filter.
Claims (1)
ト信号とを分離し、分離したこれらの水平同期信
号と付加バースト信号とから付加バースト信号の
ゼロクロス点を検出し、この検出信号に基づいて
時間軸変動の補正を行なう時間軸変動補正回路に
おいて、 前記付加バースト信号を水平同期信号のフロン
トポーチ部に挿入する一方、前記ゼロクロス点の
検出回路にＱの高い共振特性を有するバンドパス
フイルタを設け、このバンドパスフイルタで前記
付加バースト信号を抽出することを特徴とする時
間軸変動補正回路。[Claims for Utility Model Registration] A horizontal synchronizing signal and an additional burst signal are separated from a reproduced video signal, a zero-crossing point of the additional burst signal is detected from the separated horizontal synchronizing signal and the additional burst signal, and this detected signal is In the time-base fluctuation correction circuit that corrects time-base fluctuation based on the above, the additional burst signal is inserted into the front porch portion of the horizontal synchronization signal, and the zero-crossing point detection circuit is equipped with a bandpass having a high Q resonance characteristic. 1. A time-base fluctuation correction circuit, comprising a filter, and the band-pass filter extracts the additional burst signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2550886U JPS62139177U (en) | 1986-02-24 | 1986-02-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2550886U JPS62139177U (en) | 1986-02-24 | 1986-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62139177U true JPS62139177U (en) | 1987-09-02 |
Family
ID=30825727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2550886U Pending JPS62139177U (en) | 1986-02-24 | 1986-02-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62139177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02166991A (en) * | 1988-12-21 | 1990-06-27 | Nippon Hoso Kyokai <Nhk> | Television signal phase synchronizing circuit |
-
1986
- 1986-02-24 JP JP2550886U patent/JPS62139177U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02166991A (en) * | 1988-12-21 | 1990-06-27 | Nippon Hoso Kyokai <Nhk> | Television signal phase synchronizing circuit |
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