JPH0439781U - - Google Patents
Info
- Publication number
- JPH0439781U JPH0439781U JP8162990U JP8162990U JPH0439781U JP H0439781 U JPH0439781 U JP H0439781U JP 8162990 U JP8162990 U JP 8162990U JP 8162990 U JP8162990 U JP 8162990U JP H0439781 U JPH0439781 U JP H0439781U
- Authority
- JP
- Japan
- Prior art keywords
- frame pulse
- pulse
- signal
- frame
- detection means
- 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 12
- 229940028444 muse Drugs 0.000 claims description 4
- GMVPRGQOIOIIMI-DWKJAMRDSA-N prostaglandin E1 Chemical group CCCCC[C@H](O)\C=C\[C@H]1[C@H](O)CC(=O)[C@@H]1CCCCCCC(O)=O GMVPRGQOIOIIMI-DWKJAMRDSA-N 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Color Television Systems (AREA)
- Television Systems (AREA)
- Synchronizing For Television (AREA)
Description
第１図はこの考案の実施例に係るフレームパル
ス検出回路のブロツク図、第２図は同回路の動作
を示す波形図、第３図はＭＵＳＥ信号における垂
直同期信号を示す波形図である。
１……第１の相関計算回路、２……第の相関計
算回路、３……４クロツク遅延回路、４，５……
乗算器、６……ライン内フレームパルス幅検出回
路、７……ライン内フレームパルス検出回路、８
……フラグレジスタ、９……カウンタ、１０……
スイツチ、１１……フレームパルス出力回路。
FIG. 1 is a block diagram of a frame pulse detection circuit according to an embodiment of the invention, FIG. 2 is a waveform diagram showing the operation of the circuit, and FIG. 3 is a waveform diagram showing a vertical synchronizing signal in the MUSE signal. 1...First correlation calculation circuit, 2...First correlation calculation circuit, 3...4 clock delay circuit, 4, 5...
Multiplier, 6... In-line frame pulse width detection circuit, 7... In-line frame pulse detection circuit, 8
...Flag register, 9...Counter, 10...
Switch, 11...Frame pulse output circuit.
Claims (1)
信号との相関値に基づいて前記ＭＵＳＥ信号の垂
直同期信号を構成する第１のラインに含まれる第
１のフレームパルスと前記垂直同期信号を構成す
る第２のラインに含まれる第２のフレームパルス
とを検出するライン内フレームパルス検出手段と
、 このライン内フレームパルス検出手段における
前記第１のフレームパルスの検出結果に基づいて
前記第１フレームパルスと同相のパルス信号を出
力するパルス発生手段と、 前記第１のフレームパルスの検出後の前記ＭＵ
ＳＥ信号と前記パルス発生手段から出力されるパ
ルス信号との相関値に基づいて前記第２のフレー
ムパルスを検出するライン間フレームパルス検出
手段と、 前記ライン内フレームパルス検出手段及び前記
ライン間フレームパルス検出手段の検出結果に基
づいて前記第２のフレームパルスを検出結果とし
て出力するフレームパルス出力手段と を有することを特徴とするＭＵＳＥ信号のフレー
ムパルス検出回路。[Claims for Utility Model Registration] A first frame pulse included in a first line constituting a vertical synchronization signal of the MUSE signal based on a correlation value between the MUSE signal and a signal delayed by four clocks. intra-line frame pulse detection means for detecting a second frame pulse included in a second line constituting the vertical synchronization signal; and based on the detection result of the first frame pulse in the intra-line frame pulse detection means. pulse generating means for outputting a pulse signal in phase with the first frame pulse; and the MU after detecting the first frame pulse.
interline frame pulse detection means for detecting the second frame pulse based on a correlation value between the SE signal and the pulse signal output from the pulse generation means; the intraline frame pulse detection means and the interline frame pulse; A frame pulse detection circuit for a MUSE signal, comprising frame pulse output means for outputting the second frame pulse as a detection result based on a detection result of the detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8162990U JPH0439781U (en) | 1990-07-31 | 1990-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8162990U JPH0439781U (en) | 1990-07-31 | 1990-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439781U true JPH0439781U (en) | 1992-04-03 |
Family
ID=31627735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8162990U Pending JPH0439781U (en) | 1990-07-31 | 1990-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439781U (en) |
-
1990
- 1990-07-31 JP JP8162990U patent/JPH0439781U/ja active Pending
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