JPS62129594U - - Google Patents
Info
- Publication number
- JPS62129594U JPS62129594U JP1778186U JP1778186U JPS62129594U JP S62129594 U JPS62129594 U JP S62129594U JP 1778186 U JP1778186 U JP 1778186U JP 1778186 U JP1778186 U JP 1778186U JP S62129594 U JPS62129594 U JP S62129594U
- Authority
- JP
- Japan
- Prior art keywords
- color subcarrier
- circuit
- image generation
- video
- signal
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
Description
第１図は本考案装置を採用したパーソナルコン
ピユータのブロツク図、第２図は本考案装置に用
いる色副搬送波遮断回路の１実施例の回路構成図
、第３図は同実施例の入出力信号波形図、第４図
は従来のパーソナルコンピユータのブロツク図で
ある。
１……キーボード、２……コンピユータ画像発
生回路、３……映像変換回路、４……コンピユー
タ本体、４ａ……ビデオ出力端子、４ｂ……ビデ
オ入力端子、７……色副搬送波遮断回路。
Fig. 1 is a block diagram of a personal computer employing the device of the present invention, Fig. 2 is a circuit diagram of an embodiment of a color subcarrier cutoff circuit used in the device of the present invention, and Fig. 3 shows input/output signals of the same embodiment. The waveform diagram in FIG. 4 is a block diagram of a conventional personal computer. DESCRIPTION OF SYMBOLS 1... Keyboard, 2... Computer image generation circuit, 3... Video conversion circuit, 4... Computer main body, 4a... Video output terminal, 4b... Video input terminal, 7... Color subcarrier cutoff circuit.
Claims (1)
号を複合映像信号に変換して出力することができ
る映像変換回路を内蔵するパーソナルコンピユー
タにおいて、前記コンピユータ画像発生回路から
映像変換回路への色副搬送波の供給路に色副搬送
波遮断回路を設け、該遮断回路にコンピユータ画
像発生回路のモード切換に応じたモード切換信号
を供給し、ビデオモード時に該遮断回路を作動し
て映像変換回路への色副搬送波信号の供給を停止
するようにしたことを特徴とする色副搬送波干渉
防止装置。 In a personal computer having a built-in video conversion circuit capable of converting an RGB output signal from a computer image generation circuit into a composite video signal and outputting the same, a color subcarrier supply path from the computer image generation circuit to the video conversion circuit is provided. A color subcarrier cutoff circuit is provided, a mode switching signal is supplied to the cutoff circuit in accordance with the mode switching of the computer image generation circuit, and the cutoff circuit is operated in the video mode to supply the color subcarrier signal to the video conversion circuit. A color subcarrier interference prevention device characterized in that the color subcarrier interference is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1778186U JPH0715012Y2 (en) | 1986-02-10 | 1986-02-10 | Color subcarrier interference prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1778186U JPH0715012Y2 (en) | 1986-02-10 | 1986-02-10 | Color subcarrier interference prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62129594U true JPS62129594U (en) | 1987-08-15 |
| JPH0715012Y2 JPH0715012Y2 (en) | 1995-04-10 |
Family
ID=30810848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1778186U Expired - Lifetime JPH0715012Y2 (en) | 1986-02-10 | 1986-02-10 | Color subcarrier interference prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715012Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0159380U (en) * | 1987-10-08 | 1989-04-13 |
-
1986
- 1986-02-10 JP JP1778186U patent/JPH0715012Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0159380U (en) * | 1987-10-08 | 1989-04-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0715012Y2 (en) | 1995-04-10 |