JPS62178675U - - Google Patents
Info
- Publication number
- JPS62178675U JPS62178675U JP6744286U JP6744286U JPS62178675U JP S62178675 U JPS62178675 U JP S62178675U JP 6744286 U JP6744286 U JP 6744286U JP 6744286 U JP6744286 U JP 6744286U JP S62178675 U JPS62178675 U JP S62178675U
- Authority
- JP
- Japan
- Prior art keywords
- color
- signal
- circuit
- carrier
- subcarrier
- 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 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Color Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は従来例のブロツク図である。
１……ＮＴＳＣ方式用色同期回路、２……ＰＡ
Ｌ方式用色同期回路、３……搬送色信号切換回路
、４……復調用色副搬送波切換回路、５……変調
用色副搬送波切換回路、６……復調回路、７……
変調回路。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is a block diagram of a conventional example. 1...Color synchronization circuit for NTSC system, 2...PA
Color synchronization circuit for L system, 3... Carrier color signal switching circuit, 4... Color subcarrier switching circuit for demodulation, 5... Color subcarrier switching circuit for modulation, 6... Demodulation circuit, 7...
Modulation circuit.
Claims (1)
色信号との相互変換を行なうための搬送色信号変
換装置であつて、 ＮＴＳＣ方式の色副搬送波に対応する周波数の
発振回路を備えるＮＴＳＣ方式用色同期回路と、 ＰＡＬ方式の色副搬送波に対応する周波数の発
振回路を備えるＰＡＬ方式用色同期回路と、 変換されるべき搬送色信号が与えられ、この搬
送色信号を前記変換に対応する切換信号に基づい
て、前記両色同期回路の内の対応する色同期回路
に切換出力する搬送色信号切換回路と、 前記両色同期回路からそれぞれ出力される各色
副搬送波が共に与えられ、前記切換信号に基づい
て、対応する一方の色副搬送波を、復調用の色副
搬送波として切換出力する復調用色副搬送波切換
回路と、 前記両色同期回路からそれぞれ出力される各色
副搬送波が共に与えられ、前記切換信号に基づい
て、対応する他方の色副搬送波を、変調用の色副
搬送波として切換出力する変調用色副搬送波切換
回路と、 前記復調用色副搬送波切換回路からの前記一方
の色副搬送波によつて前記変換されるべき搬送色
信号から色差信号を復調する復調回路と、 前記変調用色副搬送波切換回路からの前記他方
の色副搬送波を前記復調回路からの色差信号で変
調する変調回路とを備えることを特徴とする搬送
色信号変換装置。[Claims for Utility Model Registration] A carrier color signal conversion device for mutually converting a carrier color signal of the NTSC system and a carrier color signal of the PAL system, which oscillates a frequency corresponding to a color subcarrier of the NTSC system. A color synchronization circuit for the NTSC system comprising a circuit, a color synchronization circuit for the PAL system comprising an oscillation circuit of a frequency corresponding to a color subcarrier of the PAL system, a carrier color signal to be converted is given, and this carrier color signal is a carrier color signal switching circuit that switches output to a corresponding one of the two-color synchronization circuits based on a switching signal corresponding to the conversion; and a carrier color signal switching circuit that switches output to a corresponding one of the two-color synchronization circuits, and each color subcarrier output from the two-color synchronization circuit respectively a demodulation color subcarrier switching circuit that switches and outputs one of the corresponding color subcarriers as a demodulation color subcarrier based on the switching signal; a modulation color subcarrier switching circuit which is supplied with both carrier waves and switches and outputs the corresponding other color subcarrier as a modulation color subcarrier based on the switching signal; a demodulation circuit that demodulates a color difference signal from the carrier color signal to be converted using the one color subcarrier of; and a demodulation circuit that demodulates the color difference signal from the carrier color signal to be converted using the one color subcarrier of A carrier color signal conversion device comprising: a modulation circuit that modulates with a color difference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986067442U JPH073740Y2 (en) | 1986-05-02 | 1986-05-02 | Carrier color signal converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986067442U JPH073740Y2 (en) | 1986-05-02 | 1986-05-02 | Carrier color signal converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62178675U true JPS62178675U (en) | 1987-11-13 |
| JPH073740Y2 JPH073740Y2 (en) | 1995-01-30 |
Family
ID=30906359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986067442U Expired - Lifetime JPH073740Y2 (en) | 1986-05-02 | 1986-05-02 | Carrier color signal converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073740Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722274A (en) * | 1980-07-16 | 1982-02-05 | Toshiba Corp | Cleaning device in electrophotographic device |
| JPS58213567A (en) * | 1982-05-26 | 1983-12-12 | ア−ルシ−エ− コ−ポレ−ション | Television signal standard conversion system |
-
1986
- 1986-05-02 JP JP1986067442U patent/JPH073740Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722274A (en) * | 1980-07-16 | 1982-02-05 | Toshiba Corp | Cleaning device in electrophotographic device |
| JPS58213567A (en) * | 1982-05-26 | 1983-12-12 | ア−ルシ−エ− コ−ポレ−ション | Television signal standard conversion system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073740Y2 (en) | 1995-01-30 |
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