JPH03125570U - - Google Patents
Info
- Publication number
- JPH03125570U JPH03125570U JP3458990U JP3458990U JPH03125570U JP H03125570 U JPH03125570 U JP H03125570U JP 3458990 U JP3458990 U JP 3458990U JP 3458990 U JP3458990 U JP 3458990U JP H03125570 U JPH03125570 U JP H03125570U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- color
- generation circuit
- background color
- video mixer
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Television Signal Processing For Recording (AREA)
- Processing Of Color Television Signals (AREA)
- Studio Circuits (AREA)
Description
第１図はこの考案の第１の実施例に係る背景色
発生回路の構成を示すブロツク図、第２図は第１
図の動作を示すタイムチヤート、第３図はこの考
案の第２の実施例に係る背景色発生回路の構成を
示すブロツク図、第４図は第３図の動作を示すタ
イムチヤートである。第５図は従来の背景色発生
回路の構成を示すブロツク図である。
主な符号の説明、１０Ａ，１０Ｂ：背景色発生
回路、１２：同期信号発生回路、１４：ビデオミ
キサ、２０：ミユート回路、２４：レベル可変回
路。
FIG. 1 is a block diagram showing the configuration of a background color generating circuit according to a first embodiment of this invention, and FIG.
FIG. 3 is a block diagram showing the configuration of a background color generating circuit according to a second embodiment of the invention, and FIG. 4 is a time chart showing the operation of FIG. 3. FIG. 5 is a block diagram showing the configuration of a conventional background color generating circuit. Explanation of main symbols: 10A, 10B: background color generation circuit, 12: synchronization signal generation circuit, 14: video mixer, 20: mute circuit, 24: level variable circuit.
Claims (1)
信号、ブランキング信号、搬送色信号、カラーバ
ースト信号をビデオミキサに入力して混合し、背
景色映像信号を作成する背景色発生回路において
、 ビデオミキサの搬送色信号の入力側に、必要に
応じて搬送色信号のミユートを行うミユート回路
を設けたこと、 を特徴とする背景色発生回路。 (2) ビデオミキサのブランキング信号の入力側
に、信号レベルを可変するレベル可変回路を設け
たこと、を特徴とする請求項１記載の背景色発生
回路。[Claims for Utility Model Registration] (1) The decoded synchronization signal, blanking signal, carrier color signal, and color burst signal output from the synchronization signal generation circuit are input to a video mixer and mixed to create a background color video signal. 1. A background color generation circuit characterized in that a mute circuit is provided on the input side of a carrier color signal of a video mixer to mute a carrier color signal as necessary. 2. The background color generation circuit according to claim 1, further comprising a level variable circuit for varying the signal level provided on the blanking signal input side of the video mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3458990U JPH03125570U (en) | 1990-03-31 | 1990-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3458990U JPH03125570U (en) | 1990-03-31 | 1990-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03125570U true JPH03125570U (en) | 1991-12-18 |
Family
ID=31539196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3458990U Pending JPH03125570U (en) | 1990-03-31 | 1990-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03125570U (en) |
-
1990
- 1990-03-31 JP JP3458990U patent/JPH03125570U/ja active Pending
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