JPS58172274U - Character input circuit - Google Patents
Character input circuitInfo
- Publication number
- JPS58172274U JPS58172274U JP6792482U JP6792482U JPS58172274U JP S58172274 U JPS58172274 U JP S58172274U JP 6792482 U JP6792482 U JP 6792482U JP 6792482 U JP6792482 U JP 6792482U JP S58172274 U JPS58172274 U JP S58172274U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- input circuit
- character input
- switching
- video signals
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
- Television Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は文字及び背景を表示した受像機の正面図、第２
図は従来における文字挿入回路、第３図乃至第５図は本
考案装置を示すものであり、第３ 。
図はブロック図、第４図は第３の各点Ａ、 Ｂ、 Ｃに
おけるビデオ信号のレベルを示す波形図、第５図は第４
図の合成ビデオ信号を示す波形図であり、また、第６図
は本考案における他の実施例を示すブロック図である。
４：背景挿入スイッチ、５：文字挿入スイッチ、Ｒ５，
Ｒ６，Ｒ７：抵抗。Figure 1 is a front view of the receiver displaying characters and background, Figure 2
The figure shows a conventional character insertion circuit, and Figs. 3 to 5 show the device of the present invention. The figure is a block diagram, Figure 4 is a waveform diagram showing the level of the video signal at each point A, B, and C in the third point, and Figure 5 is a waveform diagram showing the level of the video signal at each point A, B, and C in the third point.
FIG. 6 is a waveform diagram showing the composite video signal of FIG. 6, and FIG. 6 is a block diagram showing another embodiment of the present invention. 4: Background insertion switch, 5: Character insertion switch, R5,
R6, R7: Resistance.
Claims (1)
ビデオ信号を作る手段と、上記レベルの異なるビデオ信
号を選択的に切換える第１の切換手段と、上記光のビデ
オ信号と上記第１の切換手段から出力するビデオ信号を
選択的に切換える第２の切換手段とを備え、上記第１及
び第２の切換手段にそれぞれ異なるパルスを印加する事
により、元のビデオ信号及び上記レベルの異なる複数の
ビデオ信号を選択的に出力する様にした事を特徴とする
文字挿入回路。means for producing a plurality of video signals each having a different voltage level from the original video signal; a first switching means for selectively switching between the video signals having different voltage levels; and second switching means for selectively switching the video signal to be output, and by applying different pulses to the first and second switching means, the original video signal and the plurality of video signals having different levels can be switched. A character insertion circuit characterized by selectively outputting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6792482U JPS58172274U (en) | 1982-05-10 | 1982-05-10 | Character input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6792482U JPS58172274U (en) | 1982-05-10 | 1982-05-10 | Character input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58172274U true JPS58172274U (en) | 1983-11-17 |
Family
ID=30077725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6792482U Pending JPS58172274U (en) | 1982-05-10 | 1982-05-10 | Character input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58172274U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56106477A (en) * | 1980-01-30 | 1981-08-24 | Pioneer Video Corp | Circuit for inserting character in television screen |
-
1982
- 1982-05-10 JP JP6792482U patent/JPS58172274U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56106477A (en) * | 1980-01-30 | 1981-08-24 | Pioneer Video Corp | Circuit for inserting character in television screen |
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