JPH04249295A - Multiple system color screen display device - Google Patents
Multiple system color screen display deviceInfo
- Publication number
- JPH04249295A JPH04249295A JP3015214A JP1521491A JPH04249295A JP H04249295 A JPH04249295 A JP H04249295A JP 3015214 A JP3015214 A JP 3015214A JP 1521491 A JP1521491 A JP 1521491A JP H04249295 A JPH04249295 A JP H04249295A
- Authority
- JP
- Japan
- Prior art keywords
- color
- ntsc
- pal
- osd
- transmission line
- 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
- 230000010355 oscillation Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008054 signal transmission Effects 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/642—Multi-standard receivers
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、画面表示装置（オンス
クリ−ンディスプレイ、以下、ＯＳＤという）付きＶＴ
Ｒ、特にＮＴＳＣ／ＰＡＬ等、多方式のシステムを１台
のセットに搭載しているマルチシステムＶＴＲに好適な
ＯＳＤ回路に関する。[Industrial Application Field] The present invention relates to a VT equipped with a screen display device (on-screen display, hereinafter referred to as OSD).
The present invention relates to an OSD circuit suitable for a multi-system VTR equipped with multiple system systems such as NTSC/PAL, etc., in one set.
【０００２】0002
【従来の技術】従来技術として、たとえば特開昭６３−
５１７７８号及び特開昭６３−５４８８５号公報に記載
されているように水平同期信号のどちらが入力されても
テレビ画面に表示される文字の大きさを同じにするとい
うものがあった。[Prior Art] As a prior art, for example, Japanese Patent Application Laid-Open No. 63-1999-
No. 51778 and Japanese Unexamined Patent Publication No. 63-54885 disclose that the size of characters displayed on a television screen is made the same regardless of which horizontal synchronizing signal is input.
【０００３】0003
【発明が解決しようとする課題】従来の方式では単に入
力される水平同期信号に応じ、クロック周波数を切り替
えてテレビ画面上に表示される文字の大きさを一定にし
ていた。この方式は、文字信号のみの切り替えで文字の
バック色等、カラー方式の切り替えはできなかった。In the conventional system, the size of the characters displayed on the television screen was kept constant by simply changing the clock frequency in response to an input horizontal synchronizing signal. With this method, only the character signal could be switched, and it was not possible to switch the color system, such as the background color of the characters.
【０００４】本発明の目的は、たとえばＮＴＳＣ／ＰＡ
Ｌのそれぞれのカラー方式に応じ、同期信号の切り替え
及びバックのカラー方式の切り替えを行いＮＴＳＣ／Ｐ
ＡＬいずれの方式においてもカラーＯＳＤ機能の動作を
行うことにある。[0004] The object of the present invention is, for example, to
NTSC/P by switching the synchronization signal and switching the back color system according to each color system of L.
In either AL system, the purpose is to operate the color OSD function.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成させるた
めに、本発明は、ＮＴＳＣ／ＰＡＬ共用のカラーＯＳＤ
ＩＣを用いこれにＮＴＳＣ／ＰＡＬ双方に対応する為、
色副搬送波周波数を任意に切り替えられる発振回路を取
付け、これをＮＴＳＣ／ＰＡＬの判別信号により切り替
えることで達成される。[Means for Solving the Problem] In order to achieve the above object, the present invention provides an NTSC/PAL common color OSD.
In order to support both NTSC/PAL using IC,
This is achieved by installing an oscillation circuit that can arbitrarily switch the color subcarrier frequency and switching this using an NTSC/PAL discrimination signal.
【０００６】[0006]
【作用】ＮＴＳＣ／ＰＡＬ共用カラーＯＳＤ ＩＣを
用い、これにＮＴＳＣ／ＰＡＬそれぞれ独立した色副搬
送波発振回路及び、これの切り替え回路を取付け、この
切り替え回路と、カラーＯＳＤ ＩＣにＮＴＳＣ／Ｐ
ＡＬの判別信号を印加することにより、ＮＴＳＣ／ＰＡ
Ｌ共用のカラーＯＳＤ回路を形成することができる。[Operation] An NTSC/PAL common color OSD IC is used, and an independent color subcarrier oscillation circuit for NTSC/PAL and a switching circuit for this are attached to the NTSC/PAL common color OSD IC.
By applying the AL discrimination signal, NTSC/PA
A color OSD circuit shared by L can be formed.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１を用いて説明す
る。[Embodiment] An embodiment of the present invention will be described below with reference to FIG.
【０００８】図１は本発明の全体構成図を示したもので
、入力ビデオ信号伝送線１より入力されたビデオ信号は
同期分離回路２に入力される。ここで、同期分離された
同期信号は同期信号伝送線３を通り判別マイクロプロセ
ッサ４及びカラーＯＳＤ ＩＣ１４に入力される。判
別マイクロプロセッサ４は入力された同期信号によりＮ
ＴＳＣかＰＡＬの判別を行い、その結果をＮＴＳＣ／Ｐ
ＡＬ信号伝送線５を経由してカラーＯＳＤ ＩＣ１４
及び色副搬送波切り替えスイッチ９に入力される。FIG. 1 shows an overall configuration diagram of the present invention. A video signal inputted from an input video signal transmission line 1 is inputted to a synchronization separation circuit 2. As shown in FIG. Here, the synchronized and separated synchronization signals are inputted to the discrimination microprocessor 4 and the color OSD IC 14 through the synchronization signal transmission line 3. The discrimination microprocessor 4 determines N based on the input synchronization signal.
Determine whether it is TSC or PAL, and convert the result to NTSC/P.
Color OSD IC14 via AL signal transmission line 5
and is input to the color subcarrier changeover switch 9.
【０００９】この色副搬送波切り替えスイッチ９には、
ＮＴＳＣ用色副搬送波伝送線１０及び、ＰＡＬ用色副搬
送波伝送線１１を経由して、それぞれＮＴＳＣ用色副搬
送波発振回路１３及びＰＡＬ用色副搬送波発振回路１２
に接続されているので、判別マイクロプロセッサ４の信
号により色副搬送波切り替えスイッチ９は、切り替えら
れ、これにより選択された色副搬送波は色副搬送波伝送
線８を通りカラーＯＳＤ ＩＣ１４に入力される。こ
のことによりカラーＯＳＤ ＩＣ１４はＮＴＳＣ／Ｐ
ＡＬの両方のシステムに対応できることになる。ここで
カラーＯＳＤ ＩＣ１４には、ビデオ信号が入力ビデ
オ信号伝送線１を経由して印加され、またＯＳＤ制御マ
イコン６より出力された文字データはデータ伝送線７を
経由して印加されている。以上のことによりＮＴＳＣ／
ＰＡＬのいずれの方式においても、出力ビデオ伝送線１
５には正しい方式のカラーＯＳＤが、得られることにな
る。This color subcarrier changeover switch 9 includes:
Via the color subcarrier transmission line 10 for NTSC and the color subcarrier transmission line 11 for PAL, the color subcarrier oscillation circuit 13 for NTSC and the color subcarrier oscillation circuit 12 for PAL are transmitted, respectively.
Since the color subcarrier changeover switch 9 is switched by the signal from the discrimination microprocessor 4, the selected color subcarrier is inputted to the color OSD IC 14 through the color subcarrier transmission line 8. This makes the color OSD IC14 NTSC/P.
It will be compatible with both AL systems. Here, a video signal is applied to the color OSD IC 14 via an input video signal transmission line 1, and character data output from an OSD control microcomputer 6 is applied via a data transmission line 7. Due to the above, NTSC/
In either PAL system, the output video transmission line 1
5, the correct color OSD will be obtained.
【００１０】0010
【発明の効果】以上説明したように、本発明によればＮ
ＴＳＣ／ＰＡＬいずれの方式においても、カラーＯＳＤ
を得ることができる。[Effects of the Invention] As explained above, according to the present invention, N
Color OSD in both TSC/PAL systems
can be obtained.
【図１】本発明の一実施例を示す全体構成図である。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.
１．入力ビデオ信号伝送線、２．同期分離回路、３．同
期信号伝送線、４．判別マイクロプロセッサ、５．ＮＴ
ＳＣ／ＰＡＬ判別信号伝送線、６．ＯＳＤ制御マイクロ
プロセッサ、７．データ伝送線、８．色副搬送波伝送線
、９．色副搬送波切り替えスイッチ、１０．ＮＴＳＣ用
色副搬送波伝送線、１１．ＰＡＬ用色副搬送波伝送線、
１２．ＰＡＬ用色副搬送波発振回路、１３．ＮＴＳＣ用
色副搬送波発振回路、１４．カラーＯＳＤ ＩＣ、１
５．出力ビデオ信号伝送線1. input video signal transmission line; 2. synchronous separation circuit, 3. Synchronous signal transmission line, 4. Discrimination microprocessor, 5. N.T.
SC/PAL discrimination signal transmission line, 6. OSD control microprocessor, 7. data transmission line, 8. Color subcarrier transmission line, 9. Color subcarrier changeover switch, 10. Color subcarrier transmission line for NTSC, 11. Color subcarrier transmission line for PAL,
12. Color subcarrier oscillation circuit for PAL, 13. Color subcarrier oscillation circuit for NTSC, 14. Color OSD IC, 1
5. Output video signal transmission line
Claims (1)
これらを切り替える切り替え回路を有することを特徴と
する多方式カラー画面表示装置。1. A color subcarrier generation circuit having different frequencies;
A multi-system color screen display device characterized by having a switching circuit for switching these.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3015214A JPH04249295A (en) | 1991-02-06 | 1991-02-06 | Multiple system color screen display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3015214A JPH04249295A (en) | 1991-02-06 | 1991-02-06 | Multiple system color screen display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04249295A true JPH04249295A (en) | 1992-09-04 |
Family
ID=11882626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3015214A Pending JPH04249295A (en) | 1991-02-06 | 1991-02-06 | Multiple system color screen display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04249295A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100646723B1 (en) * | 2003-08-27 | 2006-11-23 | 산요덴키가부시키가이샤 | Image signal processing device and image display device |
-
1991
- 1991-02-06 JP JP3015214A patent/JPH04249295A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100646723B1 (en) * | 2003-08-27 | 2006-11-23 | 산요덴키가부시키가이샤 | Image signal processing device and image display device |
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