JPS62119069U - - Google Patents
Info
- Publication number
- JPS62119069U JPS62119069U JP520186U JP520186U JPS62119069U JP S62119069 U JPS62119069 U JP S62119069U JP 520186 U JP520186 U JP 520186U JP 520186 U JP520186 U JP 520186U JP S62119069 U JPS62119069 U JP S62119069U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- character
- signal
- sync
- video
- 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
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Description
第1図および第2図は、この考案に係る映像増
幅器のキヤラクタ挿入回路の実施例を示すもので
あつて、第1図はブロツク図、第2図は主要部を
詳細にしたブロツク図である。第3図は画像表示
パターンでA,Bはこの考案の説明用のパターン
図、Cは従来のもののパターン図である。
1;映像信号の入力端、2;映像増幅部、3;
同期信号分離部、4;背景レベル補正手段、5;
キヤラクタパターン発生器、6;映像信号合成部
、7;複合映像信号の出力端。
Figures 1 and 2 show an embodiment of a character insertion circuit for a video amplifier according to this invention, with Figure 1 being a block diagram and Figure 2 being a detailed block diagram of the main parts. . FIG. 3 is an image display pattern, A and B are pattern diagrams for explaining this invention, and C is a pattern diagram of a conventional one. 1; video signal input end, 2; video amplification section, 3;
Synchronization signal separation unit, 4; Background level correction means, 5;
Character pattern generator, 6; video signal synthesis unit, 7; output end of composite video signal.
Claims (1)
、その同期分離部より得られた同期信号を入力し
てビデオ信号と同期したキヤラクタパターンを発
生するキヤラクタ発生器と、そのキヤラクタ発生
器より得られたキヤラクタパターンと前記ビデオ
信号とを重畳して複合映像信号を生成する映像信
号合成部と、映像信号をレベル補正しキヤラクタ
の背景レベル信号として映像信号合成部に供給す
る背景レベル補正手段とを備えたことを特徴とす
る映像増幅器のキヤラクタ挿入回路。 a sync separator that separates a sync signal from a video signal; a character generator that receives the sync signal obtained from the sync separator and generates a character pattern synchronized with the video signal; a video signal synthesis unit that generates a composite video signal by superimposing the character pattern and the video signal; and a background level correction unit that corrects the level of the video signal and supplies it to the video signal synthesis unit as a background level signal of the character. A character insertion circuit for a video amplifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP520186U JPS62119069U (en) | 1986-01-20 | 1986-01-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP520186U JPS62119069U (en) | 1986-01-20 | 1986-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62119069U true JPS62119069U (en) | 1987-07-28 |
Family
ID=30786565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP520186U Pending JPS62119069U (en) | 1986-01-20 | 1986-01-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62119069U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01228277A (en) * | 1988-03-08 | 1989-09-12 | Sony Corp | Video display device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50106516A (en) * | 1973-12-25 | 1975-08-22 | ||
JPS52138834A (en) * | 1976-05-14 | 1977-11-19 | Mitsubishi Electric Corp | Multiple signal reproducer |
JPS6068781A (en) * | 1984-07-26 | 1985-04-19 | Matsushita Electric Ind Co Ltd | Character broadcast receiver |
-
1986
- 1986-01-20 JP JP520186U patent/JPS62119069U/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50106516A (en) * | 1973-12-25 | 1975-08-22 | ||
JPS52138834A (en) * | 1976-05-14 | 1977-11-19 | Mitsubishi Electric Corp | Multiple signal reproducer |
JPS6068781A (en) * | 1984-07-26 | 1985-04-19 | Matsushita Electric Ind Co Ltd | Character broadcast receiver |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01228277A (en) * | 1988-03-08 | 1989-09-12 | Sony Corp | Video display device |
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