JPS63158058U - - Google Patents
Info
- Publication number
- JPS63158058U JPS63158058U JP5031787U JP5031787U JPS63158058U JP S63158058 U JPS63158058 U JP S63158058U JP 5031787 U JP5031787 U JP 5031787U JP 5031787 U JP5031787 U JP 5031787U JP S63158058 U JPS63158058 U JP S63158058U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- detection means
- detection
- synchronization signal
- phase relationship
- 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 8
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Synchronizing For Television (AREA)
Description
第１〜第６図は本考案の実施例を示すもので、
第１図は回路のブロツク図、第２図は奇数フイー
ルドから偶数フイールドへ移る際の同期信号に対
する第１図の各部の出力波形図、第３図は偶数フ
イールドから奇数フイールドへ移る際の同期信号
に対する第１図の各部の出力波形図、第４図はノ
ンインタレース映像信号の同期信号が上記奇数フ
イールドから偶数フイールドへ移る際の同期信号
である場合の第１図の各部の出力波形図、第５図
はノンインタレース映像信号の同期信号が上記偶
数フイールドから奇数フイールドへ移る際の同期
信号である場合の第１図の各部の出力波形図、第
６図は回路の他の実施例を示すブロツク図である
。
なお図面に用いられた符号において、２，６…
…モノマルチ、３，７……フリツプフロツプであ
る。
1 to 6 show examples of the present invention,
Figure 1 is a block diagram of the circuit, Figure 2 is an output waveform diagram of each part in Figure 1 for the synchronization signal when moving from an odd field to an even field, and Figure 3 is a diagram of the synchronization signal when moving from an even field to an odd field. FIG. 4 is an output waveform diagram of each part in FIG. 1 when the synchronization signal of the non-interlaced video signal is a synchronization signal when moving from the odd field to the even field, Figure 5 is an output waveform diagram of each part of Figure 1 when the synchronization signal of the non-interlaced video signal is the synchronization signal when moving from the even field to the odd field, and Figure 6 shows another example of the circuit. FIG. In addition, in the symbols used in the drawings, 2, 6...
...monomulti, 3,7...flip-flop.
Claims (1)
の位相関係を上記垂直同期信号の始端で検出する
第１の検出手段と、 上記水平同期信号と上記垂直同期信号との位相
関係を上記垂直同期信号の終端で検出する第２の
検出手段と、 上記水平同期信号と上記垂直同期信号とが所定
の位相関係にあるときに上記第１の検出手段から
得られる検出信号により上記第２の検出手段の検
出信号を所定の状態に成す手段と を設け、上記第２の検出手段の検出信号を上記
入力映像信号のフイールド判別信号として用いる
ようにしたフイールド判別回路。[Claims for Utility Model Registration] A first detection means for detecting a phase relationship between a horizontal synchronizing signal and a vertical synchronizing signal of an input video signal at the starting edge of the vertical synchronizing signal; a second detection means for detecting the phase relationship of the vertical synchronization signal at the end of the vertical synchronization signal; and a detection signal obtained from the first detection means when the horizontal synchronization signal and the vertical synchronization signal have a predetermined phase relationship. means for bringing the detection signal of the second detection means into a predetermined state according to the above, and the detection signal of the second detection means is used as a field discrimination signal of the input video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5031787U JPS63158058U (en) | 1987-04-02 | 1987-04-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5031787U JPS63158058U (en) | 1987-04-02 | 1987-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63158058U true JPS63158058U (en) | 1988-10-17 |
Family
ID=30873571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5031787U Pending JPS63158058U (en) | 1987-04-02 | 1987-04-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63158058U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737557U (en) * | 1980-08-13 | 1982-02-27 | ||
| JPS58212277A (en) * | 1982-06-02 | 1983-12-09 | Matsushita Electric Ind Co Ltd | Magnetic recorder and reproducer |
| JPS5990463A (en) * | 1982-11-15 | 1984-05-24 | Matsushita Electric Ind Co Ltd | Field discriminating circuit of television signal |
-
1987
- 1987-04-02 JP JP5031787U patent/JPS63158058U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737557U (en) * | 1980-08-13 | 1982-02-27 | ||
| JPS58212277A (en) * | 1982-06-02 | 1983-12-09 | Matsushita Electric Ind Co Ltd | Magnetic recorder and reproducer |
| JPS5990463A (en) * | 1982-11-15 | 1984-05-24 | Matsushita Electric Ind Co Ltd | Field discriminating circuit of television signal |
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